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HP 8901B Service vol..

1. Qty suformatien Table 6 3 Replaceable Parts Description 08901 60185 SERIAL PREFIX 2315A TO 2622 INV TTL LS HEX LCH TTL LS 4 IC INV TTL LS HEX 1 INP TTL LS 3 TOS LINE HNP IC CONV 8 B D A 16 DIP C PKG IC DCDR TTL LS 3 TO 8 LINE HNP IC CONV 8 B D A 16 DIP C PKG OPTO ISOLATOR LED PCNOCT 40MA MAX OPTO ISOLATOR LED PCNDCT IF 40MA MAX IC FF TTL LS D TYPE POS EDGE TRIG COM IC LCH TTL LS D TYPE 4 iC TTL LS D TYPE 4 IC LCH TTL LS D TYPE 4 IC LCH TTL LS D TYPE 4 BIT IC LCH TTL LS O TYPE 4 BIT IC LCH TTL LS 4 BIT IC LCH TTL LS O TYPE 4 BiT IC GATE TTL LS NAND QUAD 2 INP DIODE ZNR 5 11V 5 00 35 4W DIODE ZNR 7 5V 5 DO 35 4W TC 05 DIODE ZNR 7 5V 5 00 35 4W 05 DIODE ZNR 7 5V 5 DO 35 4W 05 2 7 5V 5 DO 35 4W 0596 Mfr Code 01295 01295 01295 01295 04713 01295 04713 03911 03911 01295 01295 01295 01295 01295 01295 01295 01295 01295 28480 28480 28480 28480 28480 bacteria Bebes ted Pete serien S Replaceable Parts Mfr Part Number SN74LSO5N SN74LS75N SN74LS04N SN 4LS138N MC1408L 8 SN74LS138N MC1408L 8 CLM6500 CLM6500 SN74LS175N SN74LS75N SN74LS75N SN74LS75N SN74LS75N SN74LS75N SN74LS75N SN74LS75N SN74LSOON
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3. is cedes tend mes prr 6 13 Replaceable Parts Reference Designation 50 46 50 47 50 48 50 49 50 50 50 51 50 52 50 53 50 54 ASOCR ASOCR2 ASOCR3 ASOCR4 ASOCRS ASOCRE 50 7 AS50CRE ASOCRS ASOCR10 ASOCR11 0 12 50 1 50 2 50 1 50 12 5011 50 2 ASOL3 5014 ASOLS 5016 5017 5018 5 1 50 2 5001 5002 A50Q3 ASOQA 5005 5006 HP Part Number 0160 3459 0160 0153 0160 3459 0160 2199 0160 2199 0180 2620 0160 3459 0180 2620 0160 3459 19010179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 1098 1901 1098 1901 0535 1901 1098 9170 0847 9170 0847 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 9100 1635 9100 1635 9100 1635 9100 1635 9100 1637 9100 1637 9100 3913 9140 0179 08901 00129 2360 0113 08901 09114 1854 0811 1854 0345 1854 0345 1854 0345 1854 0475 1854 0019 Qty 9 4 9 2 2 6 9 6 9 7 7 7 7 7 7 7 7 1 4 9 1 4 4 3 0 4 9 0 4 9 2 9 2 2 2 4 2 4 2 1 1 1 6 1 2 9 1 3 1 8 3 8 8 5 3 2 i Table 6 3 Replaceable Parts Description CAPACITOR FXD 02UF 2099 100VDC CER CAPACITOR FXD 1000PF 10 200VDC POLYE CAP
4. Se GEE m BD3 SWITCH 8E 7 Service 24 22 17 2 KEYBOARD 4 KEYBOARD Option 030 assemblies only available for instruments with serial number prefixes 2314 TO 2636 Option 030 ssseablies only available for instruments with serial number prefixes 2642A and above SECTION BD3 Block Diagram Assembly Locations SEE REVERSE SIDE 8 8 89018 lt 12 2 AUDIO FILTERS ASSEMBLY Se 15 kHz xc 4 FM DEMODULATOR FILTER ASSEMBLY SELECTORS j 4 mun 260 kHz AMPLIFIER our LOW PASS 20 dB oO AUDIO GAIN J3 FILTER ATTEN MODULATION 520 kHz WI SELECTORS 2 20 dB ATTEN 2 AUDIO GAIN TPS OT SELECTORS 260 2 OUT IN FOS DASS AMPLIFIER AMPLIFIER 2 AMPLIFIER 3 Ji ILTER AG DEMODULATOR ASSEMBLY ne I AM TP2 AMPL OUTPUT AM 935 OUT ATTENUATOR BUFFER v ES et FM SQUELCH BD3 4 P O BD3 TO FROM FM OEMODULATOR AS VOLTMETER ASSEMBLY INPUT SELECTORS AUDIO RANGE LEVEL AUDIO AVERAGE DETECTOR y te NOLTAGE TO TIME CONVERTER RECTIFIER AUDIO AVERAGE LEVEL T SW OUT COMPARATOR BT ae AVG OUT RECT OUT FROM AM em 905 DEMODULATOR TPs COUNT TO COUNTER AUDIO
5. 8A 6 Schematic Symbology and Schematic Diagram 8A 10 Special PUBCON e os ew b unu Rorate eR Ri dde e Ee EE eves RU d dd 8B 1 EcL M es ae ev es E Se eh ee ee ee a oe Se 8B 1 Direct Control Special Functions Prefix 0 S iras deg 8B 1 Service Special Functions Prefix 40 99 8 5 08 701 91 SS Volume 1 Table of Contents Model 8901B SECTION 8 SERVICE cont d Error gt a agah kaor 8B 14 tlc cl ee ees 8 14 Error Message Catagories 8 14 Enabling Measurement Progress and Service Error Messages 8B 14 Measurement Progress Error Messages Errors 40 through 60 8B 14 Service Error Messages Errors 65 through 89 8B 15 Pover CHECKS v eos peu UE asc IRA Or deer 8B 17 Controller Test LEDs and Test 8B 18 SIEnabure o Var Aot E Regex die Ss rue d a dom ecd e Seth V e Re Ge ee 8B 19 General Disassembly Procedures 8C 1 Cover Removal eee Boos Ss eee ee ae aed yeh 2 8C 1 Bott
6. 7 2 7 2 2 22 J9 E t I5V 15V 4 8 TO 0 UNSWITCHED RELA SWITCHED 15 Y1 TO COUNTER Wet THIS PAGE L 4 LEFT PORTION OF DIAGRAM HIGH STABILITY CRYSTAL OSCILLATOR OPTION 002 ONLY 40 5 TO 42 5 Voc 40V 5 45 3 Vide kn Q mie 4 5 1 1 1 L 10 I 32 NEP PERDE EE ERROREM e e ET 3 22 Al KEYBOARD AND DISPLAY ASSEMBLY 3 P 02 9 DISTORTION ANALYZER PAPE ee INSTRUMENT BUS EN BD4 AIO POWER SUPPLY REGULATORS ASSEMBLY SEN lt lt lt 72 lt lt lt EMG MM MEE INE TO FROM LO CONTROL TD FROM LO DIVIDERS wie Ji COUNTER OUTPUT m M ISV REGULATOR BD2 8 AND TIME GATE C TZ A TSA N 2 INSTRUMENT BUS pas E N 7 FROM DEMODULATOR wzo Us x 7 N 7 POWER METER TRANSFORMER RECTIFIERS 7 2 7 d D BD2 5 EXT REF 7 N 7 BD3 8 FROM 10 MHz IN 2 S 7 M Ir BD4 Ari dl BUS CALIBRATOR o CALIBRATED FM 2 SELECTED TB REF 2 2 a cii FUSE FROM AUDIO VOLTMETER AUDIO COUNT TRANSFER LOGIC 2 N 2 INPUT Brg SWITCHED DISTORTION ANALYZER p Me VOLTMETER AUDIO 7 DATA 40 43 7 LN gt 804 ON STBY 40 REGULATOR Ye DEMODULATOR 1 2 AIN W gt
7. pulse time SYNG rsa esai synchronize modulation pum timed slow blow fuse PWM pulse width TA tantalum modulation TO uoa ibd temperature compensating NOTE Al abbreviations in the parts list will be in upper case MULTIPLIERS Abbreviation Prefix Multiple T tera 1012 G giga 109 M mega 106 k kilo 103 da deka 10 d deci 107 centi 10 2 milli 1073 p micro 1076 1079 10 12 f temto 10715 a atto 10 18 Model 8901B TD Sa RES time delay TERM terminal thin film transistor toggle TEM aree opu rdi thread THRU through AGE geass sete dra e eee titanium TOL tolerance TRIM trimmer TOIT seva transistor TTE ves transistor transistor logic WMV Wes VE er television television interference PWT dame traveling wave tube cus micro 1075 used in parts list UF microfarad used in parts list UHF ultrahigh frequency UNDEF undefined UNREG unregulated SCR NL s volt MA o ed eas tus voltampere volts ac VAR Roa ort variable VCO voltage controlled oscillator NOG a dns volts dc VDCW volts dc working used in parts list volts filtered VFO variable frequency oscillator VHF very high frequency volts peak
8. of barato change rev 16JUL90 rev J6JULIO Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q Mfr ty Description Mfr Part Designation Number D y oer 20 08901 60185 0 7 LO CONTROL ASSEMBLY 28480 08901 60185 20 1 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 20 2 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 A20C3 0180 0374 3 CAPACITOR FXD 10UF 10 20VDC TA 56289 150D106X9020B2 A20C4 0160 3878 6 CAPACITOR FXD 1000PF 2096 100VDC CER 28480 0160 2878 20 5 0180 2853 7 2 CAPACITOR FXD 10UF 20 100VDC 56289 109D106X0100C2 A20C6 0180 0490 4 1 CAPACITOR FXD 68UF 4 1096 6VDC TA 90201 TDC686K006WLF A20C7 0160 2204 0 CAPACITOR FXD 100PF 5 300VDC MICA 28480 0160 2204 A20C8 0160 3879 7 CAPACITOR FXD 01UF 20 00 CER 28480 0160 3879 20 9 0160 2204 0 CAPACITOR FXD 100PF 5 300VDC MICA 28480 0160 2204 20 10 0160 2879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A20C11 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A20C12 0160 2199 2 CAPACITOR FXD 4 596 300VDC MICA 28480 0160 2199 A20C13 0180 2620 6 CAPACITOR FXD 2 2UF 10 25088 D2R2GS1B50K A20C14 0160 0153 4 CAPACITOR FXD 1000PF 10 200VDC POLYE 28480 0160 0153 A20C15 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC 28480 0160 3879 A20C16 0160 3879 7 CAPACITOR FXD 01UF
9. PD iJ Model 8901B Reference Designation J13 414 14 415 416 417 418 J19 2314A TO 2514A MPI MP2 2515A AND ABOVE MPI MP2 MP3 MP4 MPS MP6 iteler 7 rev 16JUL90 HP Part C Qty Number D 1250 1811 5 2 1250 1811 5 1250 1811 5 08662 60304 2190 0104 0 2950 0132 6 08731 210 2 1510 0091 3 3 2190 0015 3 2950 0001 8 1510 0091 3 2190 0016 3 2950 0001 8 1510 0091 3 2190 0016 3 2950 0001 8 1250 0083 1 2190 0016 3 2950 0001 8 5020 8805 8 1 2360 0114 3 6 5020 8837 6 4 2360 0115 4 28 2360 0119 8 1 2510 0192 6 16 5020 5805 4 1 2360 0114 3 6 5020 5837 2 4 2360 0115 4 28 2360 0119 8 1 0515 1331 5 16 5041 8802 9 3 5062 3704 4 2 5062 3735 1 1 0510 0043 4 2 0510 1171 1 2 5062 3747 5 1 05100043 4 0510 1171 1 fct tien Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS ADPT SMA OPTION 030 ONLY LO OUT INCLUDES ATTACHING HARDWARE ADAPTER COAX STR F N F SMA LO INPUT REAR OPTION 003 ONLY INCLUDES ATTACHING HARDWARE ADPT F SMA OPTION 030 ONLY LO IN INCLUDES ATTACHING HARDWARE CONN ASSY RF INPUT REAR OPTION 001 ONLY WASHER LK INTL T 7 16 IN 439 IN ID NUT HEX DBL CHAM 7 16 28 THD 094 IN THK LOCKING NUT BINDING POST SGL SGL TUR JGK RED RF SWITCH 1 WASHER LK INTL T 3 8 IN 377 IN ID NUT HEX DBL CHAM 3 8 32 THD 094 IN THK BINDING POST SGL SGL TUR JGK RED RF SWITCH
10. telected repeat to gt w e d 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 17856 01295 28480 28480 04713 02114 04713 28480 28420 28480 28480 28480 28480 08901 80079 08901 80080 08901 60085 08901 80079 08901 80080 08901 80086 1250 1425 2190 0124 2950 0078 1250 1425 2190 0124 2950 0078 1251 4700 9140 0137 91400137 9140 0137 08902 00033 2N5114 2 4391 1854 0668 1854 0668 2 4959 56 590 65 3B 2 5179 1853 0459 1854 0404 1854 0404 1853 0459 1854 0404 1853 0459 Be bani poc change rev 1OJULIO Model 8901B Reference Designation A72 A72R1 A72R2 A72R3 A72R4 A72R5 A72R6 A72R7 A72R8 A72R9 A72R10 A72R11 A72R12 72 13 72 14 A72R15 A72R16 A72R17 A72R18 A72R19 A72R20 A72R21 A72R22 A72R23 A72R24 72 25 A72R26 A72R27 A72R28 A72R29 A72R30 A72R31 A72R32 A72R33 A72R34 A72R35 A72R36 A72R37 A 2R38 A72R39 A72R40 A72R41 72842 A72R43 A72R44 A72T1 A72U1 A72U2 A72U3 7204 7205 Part Number 0757 0465 0757 0465 0757 0274 0757 0274 0757 0400 0698 3443 0757 0274 0757 0405 0698 3443 0757 0274 0757 0405 0698 0082 0698 3443 0698 3443 0757 1094 0698 3443 0757 1094 0698 3441 0698 3441 0699 0678 0699 0681 0757 0274 0698 3441 0698 0084 0698 0082 0757 0274 0
11. RESISTOR 7 5K 1 125W TC 20 100 RESISTOR 13 3K 1 125W TC 20 100 RESISTOR 10K 1 125W 0 100 RESISTOR 23 7K 1 125W TC 0 100 NETWORK RES 8 SIP470 0 OHM X 7 RESISTOR 75 1 05W F TC 0 100 RESISTOR 51 1 05W F TC O 100 RESISTOR 261 1 125W TC 2 O 100 NETWORK RES 8 SIP470 0 OHM X 7 NETWORK RES 8 SIP470 0 OHM X 7 RESISTOR 51 1 1 05W TC 0 100 RESISTOR 10K 1 05W F TC 0 100 RESISTOR 10K 1 OSW F 0 100 RESISTOR 75 1 05W TC 04 100 RESISTOR 75 1 05W TC 0 100 RESISTOR 750 1 125W 0 100 RESISTOR 750 1 125W TC O 100 RESISTOR 19 6 1 05W TC 0 100 RESISTOR 61 9 195 125W TC 0 100 RESISTOR 1K 1 05W TC 0 100 RESISTOR 2 87K 1 125W TC 04 100 RESISTOR 61 9 1 125W TC 0 100 RESISTOR 511 1 OSW TC 0 100 RESISTOR TRMR 200 10 C SIDE ADJ 1 TRN RESISTOR 511 1 125W F TC 204 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 0 10C RESISTOR 68 1 1 125W 0 100 RESISTOR 511 1 05W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 10 1 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 Pde ted engpoueni hetei ba 7 24546 19701 24546 24546 01121 24546 24546 24546 01121 01121 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 3
12. 1 200VDC CAPACITOR FXD 02UF 1 200VDC CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 47UF 5 100VDC CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 27UF 2 100VDC CAPACITOR FXD 27UF 2 100VDC CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 1UF 20 CER CAPACITOR FXD 27UF 2 100VDC CAPACITOR FXD O1UF 20 100VDC CER CAPACITOR FXD 100PF 5 100VDC CER CAPACITOR FXD 01UF 10 100VDC CER CAPACITOR FXD 01UF 10 100VDC CER CAPACITOR FXD 01UF 10 100VDC CER hye tary nt d hetet te ete Mfr Code 28480 28480 56289 56289 28480 16299 28480 28480 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 56289 56289 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 Replaceable Parts Mfr Part Number 08901 50131 0180 2929 150D105X9035A2 150D105X9035A2 0160 3879 CACOSX7R224J050A 0160 3879 0160 3878 0160 3879 0160 4797 0160 3879 0160 0576 0160 0576 150D156X9020B2 0160 4267 0160 5340 0160 5340 0160 4267 0160 4768 0160 0576 0160 0576 0160 0576 0160 4267 0160 5340 0160 5340 0160 4267 150D156X9020B2 0160 4267 0160 5340 0160 5340 0160 4267 1500156 902082 150D156X9020B2
13. AND AS C IMA DECODERS SS NN 5 6 7 0 p nis commoner asser ______ S 7 12V AND 5V 4 12 REGULATOR 7 l POWER SUPPLY NONVOLATILE 12V UNBUFFERED 75 gt AND COLUMN 7 DETECTOR MEMORY SUPPLY BATT 2 DATA 40 43 5 SCANNERS 12 5 BATTERY DETECTOR 7 i5V 12 7 cod 2 CLOCK OUT BUFFERED DATA 40 43 2 CENTRAL 2 VR PROCESSING 7 ADDRESS 5 ADDRESS 0 15 erly Ds SUFFERED SELECT 03 7 i 4 S UM apis Co Ear ER 7 ENABLE 15 STATIC EXT 1 0 4 7 MEMORY hs teh ee act at dei Na sia Lr 7 INTERF ACE RES PORTS r 1 CPU i ADDRESS 0 15 8 LER A oa ALL ALL OFF 200 i ZZZZZ ROMCO gt 000000000006 T TPB 0 10 ADDRESS AO AIG MEMORY SELECT NT DECODER LLLL LE a e i SS P sas 471 PT UT INPUT 7 fap on TRACK P m 7415 lt gt
14. BUS TO FROM CONTROLLER 52 AUDIO COUNTER DISTORTION ANALYZER ASSEMBLY _ oe 2 9M AUDIO COUNT gt gt COUNTER SCHMITT BUFFER TRIGGER STOP COUNT BUFFER STOP COUNT COUNTER GATE CONTROL INTERNAL 1 MODULATION n AUDIO INPUT SWITCH BUFFER 4 BUFF OUT IM EET MA AMPLIFIER 1 RMS TO DC RIPPLE pes 4 6 SWITCH CONVERTER FILTER J2 EXCEPT OPT 001 o P J2 RMS 53 V MODULATION e N E Q ap SNPUT NOTCH AMPLIFIER 2 FILTERS MEM US 20 48 TP2 AUDIO AMPL DISTORTION OPT 001 ONLY aai DUT 20 i TP3 NOTCH 20 dB FLT OUT AUDIO COUNTER Sooo COUNTER STAGES 1 4 OUTPUT SWITCH COUNT PULSE SWITCH E M AND NECS LATCHES INSTRUMENT BUS TO FROM CONTROLLER AUDIO COUNT 16 BD4 8 9 Service Model 89018 30 UNDER TRANSFORMER 1 KEYBOARD A1 KEYBOARD XO0ption 030 assemblies only available for instruments with serial number prefixes 23144 TO 26364 xOption 030 assemblies only available for instruments with serial number prefixes 2642A and sbova AUDIO SECTION D Block Diagram Assembly Locations SEE REVERSE SIDE 8 10 v2 AUDIO COUNTER
15. mo a OUTPUT ap me eb WEB um GE a GEB GUB 10 11 P O 804 c au oe ae dia IF PEAK lt gt STOP SE __ BD a IF QUT LEVEL TO LO OUTPUT ASSEMBLY CONTROL DECODER AND T LATCH DETECTOR INSTRUMENT BUS Fc 1r present status a TO FROM OPTION 030 SEAIES ONLY OPT 030 SERIES ONLY CONTROLLEA ASS IF CHANNEL FILTER ASSEMBLY SERIAL PREFIX 2642A AND ABOVE A54 IF AMPLIFIER AND DETECTOR ASSEMBLY SERIAL PREFIX 2344A TO 25384 T BD5 9 72 IF AMPLIFER AND DETECTOR ASSEMSLY SERIAL PREFIX 2642 AND ABOVE ZD A71 IF AMPILFIER ANO DETECTOR ASSEMBLY 2642A AND ABOVE 72 CHANNEL FILTER ASSEMDL eee See oe qm EEE eee TO ALC I CHANNEL 4 CHANNEL 4 CHANNEL 1 PROGRAMMABLE IF ATTENUATION lt 3 gt LUBRENT 3 SUFFER AMPLIFIER AND AMPLIFICATION DRIVE ic chi eo m IF sTEP uP CHANNEL CHANNEL AMPLIFIER BM AMPLIFIER TRANSFORMER OUTPUT OUTPUT ATTENUATOR AMPLIFIER ATTENUATOR AMPLIFIER ATTENUATOR AMPLIFIER ATTENUATOR DEFEAT CONTROL ALC REF AMPLIFIER Ji 1 4 2 FILTER STAGE IF N32 gt ore 048 b E AVG IF LEVEL OLT BUFFER BAND PASS AM a 9 5 e gt ee LEVEL AMPLIFIER
16. 16JUL9O N NNN 0005 OQ NNG Oa Oo ann Qty Table 6 3 Replaceable Parts Description RESISTOR TRMR 100 10 C SIDE ADJ 1 TRN RESISTOR 4 99K 25 125W TC 0 25 RESISTOR 3 09K 2549 125W TC 0 50 RESISTOR 4 64 1 125W F TC 0 100 RESISTOR 10K 196 125W F TC 0 100 RESISTOR 4 64K 1 125W TC 2 0 100 RESISTOR 10K 196 125W F TC 20 100 RESISTOR 90 9K 1 125W TC 0 100 RESISTOR 511 196 125W F 0 100 RESISTOR 133 1 05W F TC O 100 RESISTOR 222 5 125W TC 0 50 RESISTOR 1K 25 125W F TC 0 50 RESISTOR 26 1K 1 125W TC 0 50 NOT ASSIGNED RESISTOR 1K 25 125W TC 0 50 RESISTOR 3 32 25 125W TC 0 50 RESISTOR 196 1 125W TC 204 100 RESISTOR 4 22 1 125W TC 04 100 RESISTOR 19 6K 1 RESISTOR 2 61K 1 RESISTOR 9 09K 1 RESISTOR 16 2 1 RESISTOR 4 22K 1 125W TC 0 100 125W 0 100 125W F TC 0 100 125W TC 0 100 125W 04 100 RESISTOR 100 1 125W F TC 0 100 RESISTOR 8 25K 1 125W F TC 0 100 RESISTOR 51 1 1 RESISTOR 190 1 RESISTOR 750 1 RESISTOR 100 1 RESISTOR 511 1 RESISTOR 750 1 RESISTOR 261 1 RESISTOR 100 1 OSW F TC 04 100 OSW 0 4 100 125W TC 100 OSW TC 0 100 125W TC a 0 100 125W TC 04
17. 35 DIODE GEN PRP 125MA DO 35 CONNECTOR RF SMC SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK CONNECTOR RF SMC M SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK INDUCTOR FIXED 120 1300 H2 INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR RF CH MLD 220NH 10 105DX 26LG INDUCTOR INDUCTOR RF CH MLD 220NH 10 105DX 26LG PART OF ETCHED CIRCUIT BOARD PART OF ETCHED CIRCUIT BOARD COVER HF VCO GROUND STRAP GROUND STRAP SHLD COMP SMALL SHIELD CKT SM GASKT HF VCO TRANSISTOR NPN S TO 39 PD 1W FT 800MHZ INSULATOR XSTR POLY TRANSISTOR J FET N CHAN D MODE TO 18 SI TRANSISTOR J FET N CHAN D MODE TO 18 SI TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW TRANSISTOR PNP 2N3251 SI TO 18 PU 360MW TRANSISTOR NPN 1 TO 18 PD 360MW TRANSISTOR NPN SI 18 PD 360MW TRANSISTOR PNP 2N3251 SI 18 PD 360MW RESISTOR 1K 1 SW TC 204 100 RESISTOR 1K 1 125W 0 100 RESISTOR 28 7K 1 125W TC 04 100 RESISTOR 21 5 1 125W 0 100 RESISTOR 511 1 125W 0 100 RESISTOR 1 21K 1 125W 0 100 RESISTOR 19 6K 1 125W 0 100 RESISTOR 110 1 125W 204 100 RESISTOR 10K 1 125W F TC 0 100 RESISTOR 4 64 1 125W 0 100 RESISTOR 2 87K 1 125W TC 0 100 RESISTOR 100 1 1
18. CD j CHANNEL T o0 20 dB 20 5 ja amp S Maz rr AND CARRIER FILTER T AMPLIFIER INPUT CHANNEL 2 ET CHANNEL 2 OUTPUT i p J2 FILTER BUFFER MODULATION SWITCH BUFFER CHANNEL 2 AMPLIFIER ATTENUATOR S ye SUMMING BOTE are 9 AMPLIFIER ATTENUATOR J2 CURRENT EEk j t CALIBRATION tu VARIABLE ef AM OUTPUT AMPLIFTER AM FM AMPLIFIER DETECTOR BUFFER MODULATOR CALIBRATED AM AND FM OUTPUT i gt 8 EXCEPT OF 501 AMPLIFIER DC CALIBRATION DETECTOA AMPLIFIER TP2 AM FM SECOND CHANNEL 4 FILTER i CHANNEL 4 gt 4 CHANNEL 8 BD LATCH OUTPUT CURRENT SOURCE gt X10 DC CURRENT AMPLIFIER DECODER SDURCE AND LATCH PPS X10 AM CAL TRIANGLE TRAPEZOID 10 MHz OUT OUT OUTPUT OUT AMPLIFIER INSTRUMENT BUS TO FROM DATA CONTROLLER as ee Co ats TRIANGLE GENERATOR 43 CALIBRATED FM a G M ie eee ua Ga v e c Pretty SWITCH CY 3 OUTPUT TEST FILTER J4 10 kHz BD4 MODULATION INSTAUMENT OSCILLATOA CONTROLLER BUFFER gt BD2 BDS INTERNAL INSTRUMENT BUS EXTERNAL FROM CONTROLLEA eee Cee ee LO INPUT 7 s
19. E Anm ZZ LLY 9 9 2 THM 92 FT 7 7 cag 2 n Nu 104100 er hs ox if NAHY 2 La 33H 7 7 OXIA OXIA TEEL 1 7 40153130 2 90 02 17 K 271 31 31 n EUN 7 7 H3M0dH3A0 JI ZH 66 017 01 711250 4 0 7 ES re MEME in 0 0 M 18 356 uiinri OXIA L es a ae Z p 0 o tm eee T eem vmm CS f ATES se SIIMS indNI 07 531935 Neuer Tet 18 355 OXJA MO ec i U314I IdNV 80123130 rth ay ee 01 1 3 26 01140 P 130 80123130 13431 38 amp er gums 3H gt adana 531935 ONY G00 01140 1932 3 pom 4I LSH Bi 3 i 14 TREAT 1 16 2 i i Mlewassy 833208 Dee Mo 1 n y NOI LYSN3dMO2 i IMdNI 97Y ECM pip SEM gio ino Z ON GP OF FON LNdNI t 41113 DT 209110 01 tD n dei THH UOSNSS TWOIdAL CFE gt apo ah gt d32X3 00430 H
20. 0 100 24546 C4 1 8 T0 1001 F 4911 07570280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F A4R12 0698 3155 1 RESISTOR 4 64K 1 125W F TC 0 100 24546 4 1 8 0 4641 4913 0698 0082 7 RESISTOR 464 1 125W TC 04 100 24546 C4 1 8 T0 4640 F AAR14 0698 0082 7 RESISTOR 464 1 125W TC 04 100 24546 C4 1 8 T0 4640 F AAR15 0698 3155 1 RESISTOR 4 64K 1 125W TC 0 100 24546 C4 1 8 TO A64 1 AAR16 0698 3155 1 RESISTOR 4 64K 1 125W TC 0 100 24546 4 1 8 0 4641 thie det de 1 rev 16 0190 fer anforgnatien S actors selected Compoenenm 10 section d Errata pati change 6 d 3 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Mfr Designation Number D Qty Description Code Mfr Part Number AAR17 0757 0280 3 RESISTOR 1K 196 125W TC 0 100 24546 C4 1 8 T0 1001 F 4 07570279 0 RESISTOR 3 16 1 125W TC 04 100 24546 4 1 8 70 3161 4819 0757 0280 3 RESISTOR 1 125W TC 0 100 24546 4 1 8 0 1001 Aa R20 0757 0280 3 RESISTOR 1K 1 125W TC 04 100 24546 4 1 8 0 1001 AAR21 0757 0280 3 RESISTOR 1K 1 125W 0 100 24546 C4 1 8 TO 1001 F 22 0698 3155 1 RESISTOR 4 64K 1 125W TC 0 100 24546 4 1 8 0 4641 4923 0698 3155 1 RESISTOR 4 64K 1 125W TC 0 100 24546 4 1 8 0 4641 AAR24 0698 0082 7 RESISTOR 464 1
21. 804 INSTRUMENT BUS ON STBY 5 REGULATOR GO CAMEL FLD 10 MHz 5 SP 803 56 REGULATOR REFERENCE OSCILLATOR IN 7 OSCILLATOR 7 S 1 o da 002 ONLY pis J4 7 5 2 THIS PAGE XT 1600 ANY 2 N UPPER RIGHT C4 10 MHz 7 SS 3l IN EXCEPT M TIME BASE N 7 TIME BASE wes 46 002 5 OUT 6 25 kHz 2 N a 10 MHz INPUT 2 MHz o N Aa 7 SN 777027 e I xs AME 1 S 5 m EE NEN A IN N 7 1 CT SA Al4 REMOTE INTERFACE ASSEMBLY REMOTE ENABLE REN INTERFACE CLEAR IFC TALK LISTEN ATTENTION 1 0 HANDSHAKE DATA 170 SERVICE REQUEST SRQ a t delle A ADORESS DECODER CONTROL LOGIC a SSO SSSA STATA PERIPHERAL y INPUT OUTPUT CONTROL TEST PIO BUS TIME BASE 10 MHz OUTPUT al pee eeu c UU BUFFERED DATA 40 43 WLLL eg S PME N E a ec ee cer ee ee LLL LEE LE LE LLL LEE ERED U 2 WW se
22. DIODE SWITCHING 30V 50MA 2NS 00 35 DIODE SWTTCHING 30V 50MA 2NS 00 35 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 30V SOMA 2NS 00 35 DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SWITCHING 30V 50MA 2NS DO 35 NOT ASSIGNED DIODE SWITCHING 1N4150 50V 200MA 4NS INDUCTOR RF CH MLD 1MH 5 2DX 45LG Q 60 INDUCTOR RF CH MLD 68UH 5 166DX 385LG INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 COVER AUD DE EMP SCREW MACH 6 32 25 IN LG PAN HD POZI TRANSISTOR NPN 2N2222A S TO 18 PD 500MW RESISTOR 19K 1 125W F TC 0 100 RESISTOR 25K 1 125W O 50 RESISTOR 45K 196 125W F TC 0 100 RESISTOR 22 6K 1 125W TC 0 100 RESISTOR 1 125W TC 0 25 RESISTOR 12 5K 1 125W F TC 0 25 RESISTOR 1K 1 125W F TC 0 100 NOT ASSIGNED RESISTOR 2 61K 196 125W 04 100 RESISTOR 26 1K 1 125W TC 0 100 RESISTOR 38 3K 1 125W F TC 0 100 NOT ASSIGNED RESISTOR 8 25K 1 125W TC 0 100 RESISTOR 8 25K 195 125W TC 04 100 RESISTOR 5 11K 1 125W TC 0 100 RESISTOR 8 25K 1 125W 0 100 Mfr Code 56289 26480 56289 28480 28480 28480 56289 56289 28480 28480 ON171 28480 28480 28480 28480 9 171 28480 28480 28480 28480 00000 04713 19701 24546 24546 24546 28480 24546 24546 24546 24546 24546 24546 24546 24546 24546 Factory Selected Component to Sech
23. FT 150MHZ 28480 1853 0020 A1904 1858 0032 8 TRANSISTOR ARRAY 14 PIN PLSTC DIP 3L585 CA3146E A19R1 0698 7236 7 RESISTOR 1K 1 O5W 04 100 24546 C3 1 8 T0 1001 F A1T9R2 0698 7227 6 RESISTOR 422 1 05W TC 0 100 24546 C3 1 8 TO422R F 19 3 0698 7227 6 RESISTOR 422 1 05W 0 100 24546 C3 1 8 TO 422A F 19 4 0698 7227 6 RESISTOR 422 1 OSW TC 0 100 24546 C3 1 8 TO 422R F 1985 0698 7227 6 RESISTOR 422 1 OSW 204 100 24546 C3 1 8 TO422R F 1986 0688 7232 3 RESISTOR 681 1 05W 0 100 24546 C3 1 8 TO 68 1R F A19R7 0698 7232 3 RESISTOR 681 1 OSW TC 04 100 24546 C3 1 8 TO 681R F A19R8 0698 7232 3 RESISTOR 681 1 OSW TC 0 100 24546 C3 1 8 TO 6B1R F 1989 0698 7232 3 RESISTOR 681 1 OSW TC 0 100 24546 C3 1 8 TO 681RA F A19R10 0698 3437 2 RESISTOR 133 1 125W TC 204 100 24546 C4 1 8 T0 133R F A 9R11 0757 0402 1 RESISTOR 110 1 125W TC 04 100 24546 C4 1 8 T0 111 F A19R12 0757 0422 5 RESISTOR 909 1 125W TC 0 100 24546 C4 1 8 TO 909R F 9 13 0757 0422 5 RESISTOR 909 1 125W 0 100 24546 C4 1 8 T0 909R F 19 14 07570422 5 RESISTOR 909 1 125W TC 204 100 24546 C4 1 8 T0 909R F A19R15 0757 0422 5 RESISTOR 909 1 125W F TC 0 100 24546 C4 1 8 T0 909R F 19 16 0757 0280 3 RESISTOR 1K 1 SW 125W F TC e 0 100 28480 0757 0280 A19R17 0698 3151 7 RESISTOR 2 87K 1 125W TC 0 100 24546 0698 3151 A19R18 0698 3132 4 RESISTOR 261
24. reverse working PHL ire a ee aes Phillips voltage positive intrinsic S scattering parameter negative es ee ee re second time peak inverse voltage second plane angie DE whee e kae bas peak S B Slow blow fuse Ri phase lock used in parts list PLO phase lock oscillator SCR silicon controlled phase modulation rectifier screw PNP positive negative SE selenium positive SECT sections PJO dg ax part of SEMICON semiconductor POLY polystyrene SHF superhigh frequency porcelain Si oes vous E V silicon POS positive position s silver used in parts list slide position SNR signal to noise ratio POT potentiometer SPDT single pole peak to peak double throw PP uote peak to peak used SPG eae tpe res spring in parts list SR split ring PPM pulse position SPST single pole modulation single throw PREAMPL preamplifier ci Service Sheet PRF pulse repetition SSB single sideband frequency SST stainless steel PRR pulse repetition rate STL uda steel DS was sesion picosecond Square JC E point SWR standing wave ratio
25. u3TdNYS ECY 2 21883557 dalaw EGY bomi 7 TTT 1 sag 2 LL Li 2 a i Y 7 GA 27 s EE 324005 1 328902 324008 1N3HHn2 e dis 4 7 500 NOILdO 1d32X3 HOSNAS 01 JH 100 25050005 220202722 eee Mos 2 TORGET DENEN m 8 e 378YN3 31Y8 2 NA 1 2 2 9 p 7 77 ual IL 7 2 2 833308 HSIH 7 e 0129911810 7 4 a 2 4 sari i 2 PEORES INAL 934309 dl 173 1 l 9 8114 3180 7 119 d 38Y1004 QUBIADVMY 2 31Y8 104100 02A JH ANNL 0X2A 41 09A cm 7 2 2 286 lt 2 EN M 7 18 355 07 05 B OJA 7 118170 431113 SS d 8318000 31 ai enn LLL LLL ELLE TEE A18N3S8Y 8301410 01 6FY 18 355 ODA A3NafD3H3 HS H ve pee LLL NS l 11 1 I I 1 13431 F 1 i i 1 1 l 2 i AIND 060 531836 01140 sStdoNro aise 2 mes
26. 10 20VDC 56289 150D156X9020B2 A2C2 0180 1746 5 CAPACITOR EXD 15UF 10 20VDC 56289 150D156X9020B2 A2C3 0160 4650 4 2 CAPACITOR FXD 1380PF 1 500VDC MICA 28480 0160 4650 2 4 0160 4650 4 CAPACITOR FXD 1380PF 1 500VDC MICA 28480 0160 4650 A2C5 0160 2055 9 28 CAPACITOR FXD 010 80 20 100VDC CER 28480 0160 2055 A2C6 0160 2055 8 CAPACITOR FXD 03UF 80 20 100VDC CER 28480 0160 2055 A2C7 0160 4648 0 2 CAPACITOR FXD 1650PF 1 500VDC MICA 28480 0160 4648 A2C8 0160 4648 0 CAPACITOR FXD 1650PF 1 500VDC MICA 28480 0160 4648 A2C9 0160 0134 1 2 CAPACITOR FXD 220PF 549 300VDC MICA 28480 01600134 2 10 0160 4649 1 1 CAPACITOR FXD 214 1 500VDC MICA 28480 0160 4649 A2C11 0180 1714 7 e CAPACITOR FXD 330UF 10 6VDC 56289 1500337 900652 2 12 0140 0229 3 1 CAPACITOR FXD 380PF 1 300VDC MICA 72138 DM15F381F0300WV1C A2C13 0180 2206 4 5 CAPACITOR FXD 60UF 10 6VDC TA 56289 150D606X9006B2 A2C14 0140 0196 3 2 CAPACITOR FXD 150PF 5 300VDC MICA 72136 DM15F151J0300WV1CR A2C15 0180 2206 4 CAPACITOR FXD 60UF 10 6VDC 56289 150D606X9006B2 A2C16 0180 2206 4 CAPACITOR FXD 60UF 10 6VDC 56289 150D606X900682 A2C17 0140 0194 1 1 CAPACITOR FXD 110PF 4 596 300VDC MICA 72136 DM15F111J0300WV1CR A2C18 NOT ASSIGNED 2 19 0160 2055 9 CAPACITOR FXD 01UF 80 20 100VDC CER 28480 0160 2955 2 20 0180 2141 6 2 CAPACITOR FXD 3 3UF 10 50VDC 56289 150D335X9050B2 A2C21 0160 4084 8 34 CAPACITOR FXD 1UF
27. 5 15 0699 0074 9 RESISTOR 14 7 1 125W 0 150 28480 0699 0074 2449 AND ABOVE AbRIE 0699 0073 8 RESISTOR 10M 196 125W TC 0 150 26480 0699 0073 ASR16 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 CA 1 8 TO 511R F ASAI 0698 0083 8 RESISTOR 1 96K 1 125W TC 0 100 24546 C4 1 8 TO 1961 F 5 18 2100 3358 3 RESISTOR TRMR 1M 20 SIDE ADJ 1 TRN 28480 2100 3358 5 19 0757 0461 2 RESISTOR 68 1K 1 125W TC 0 100 24546 C4 1 8 T0 6812 F A5R20 0698 3150 6 7 RESISTOR 2 37K 1 125W TC 04 100 24546 C4 1 8 T0 2371F ASR21 0757 0346 2 RESISTOR 10 1 125W TC 0 100 24546 C4 1 8 T0 10R0 F ASR22 0699 0222 9 1 RESISTOR 10 5K 1 1W F TC 0 15 28480 0699 0222 ASR23 2100 3351 6 1 RESISTOR TRMR 500 10 C SIDE ADJ 1 TRN 28480 2100 3351 ASR24 0757 1094 9 RESISTOR 1 47K 1 125W TC 0 100 24546 4 1 8 10 1471 ASR25 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F ASR26 0757 0439 4 RESISTOR 6 81K 1 125W F TC 0 100 24546 C4 1 8 T0 6811 F ASR27 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F ASR28 0757 0416 7 RESISTOR 511 1 125W 0 100 24546 C4 1 8 TO 511R F ASR29 0757 0458 7 8 RESISTOR 51 1K 1 125W 0 100 24546 C4 1 8 T0 5112 F ASR30 0698 3430 5 RESISTOR 21 5 1 125W TC 04 100 03888 PME55 1 8 TO 21R5 F ASR31 0757 0280 3 RESISTOR 1K 1 125W F TC 0 100 24546 1 8 0 1001 ASR32 0757 0416 7 RESISTOR 511 1
28. 52856 52557 A52R58 AS2R59 52 50 AS2TP1 AS2TP2 A52TP3 52 4 52 5 5201 AS2U2 5203 5204 2314A 2515 521 5 5206 2517 AND ABOVE AS2U5 5206 rev 162 ULI HP Part Number 0699 0779 0699 0780 0696 6414 0699 0781 0699 0057 0699 0783 0757 0280 2100 3352 0699 0057 0698 6414 0757 0420 0698 3158 0757 0280 2100 3274 0698 8827 0757 0420 2100 3354 0757 0458 0698 3161 0698 3161 0598 3450 0757 0280 0698 3136 0698 3444 0757 0465 0698 3443 0698 3444 0757 0199 0757 0290 0757 0418 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1826 0421 1826 0606 1826 0753 1826 0753 1826 0606 1826 0606 1826 1012 1826 1012 A m MO On u on XQ WG wm oo a o O 0 Qty 10 Table 6 3 Replaceable Parts Description RESISTOR 4 523 1 1W TC 204 15 RESISTOR 4 64K 1 1W 15 RESISTOR 1K 1 IWF amp 0 4 5 RESISTOR 7 18K 1 1W TC 204 15 RESISTOR 9K 1 IW TC 0 5 RESISTOR 14K 1 1W TC amp 04 15 RESISTOR 1K 1 125W F TC 0 100 RESISTOR TRMR 1K 10 C SIDE ADJ 1 TRN RESISTOR 9K 1 IWF TC 20 5 RESISTOR 1K 1 AW F TC 04 5 RESISTOR 750 1 125W TC 0 100 RESISTOR 23 7K 1 125W TC 0 100 RESISTOR 1K 1 125W TC O 100 RESISTOR TRMR 10K 1096 C SIDE ADJ 1 TAN RESISTOR 1M 1 12
29. 596 2DX 45LG Q 60 INDUCTOR RF CH MLD 906UH 2 2DX 45LG INDUCTOR RF CH MLD 906UH 296 2DX 45LG INDUCTOR RF CH MLD 910UH 5 2DX 45LG INDUCTOR RF CH MLD 824UH 296 2DX 45LG INDUCTOR RF CH MLD 390UH 5 2DX 45LG INDUCTOR RF CH MLD 375UH 2 2DX 45LG INDUCTOR 13MH 2 25DX 7LG INDUCTOR RF CH MLD 2MH 5 23DX 57LG INDUCTOR 16MH 2 25DX 7LG INDUCTOR RF CH MLD 1 1MH 5 23DX 57LG INDUCTOR RF CH MLD 750UH 5 2DX 45LG INDUCTOR RF CH MLD S60UH 5 2DX 45LG COVER AUD FILTER SCREW MACH 6 32 254 4 PAN HD POZI ENCL SHLD DIVDR COVER ENCL SHLD SPACER 1 SPACER 2 SPACER 3 SPACER 4 TRANSISTOR DUAL NPN 750MW TRANSISTOR NPN S 300MW FT 200MHZ TRANSISTOR PNP 2N3251 SI 18 PD 360MW TRANSISTOR NPN 2N2222A TO 18 PD 500MW TRANSISTOR NPN Si PD 300MW 200MHZ TRANSISTOR PNP 2N2904A SI TO 39 PD 600MW TRANSISTOR NPN 2N2218A SI TO 5 PD 800MW RESISTOR 10K 1 125W TC 0 100 RESISTOR 10K 1 125W TC 0 100 RESISTOR 6 19K 1 125W TC 0 100 RESISTOR 6 19K 1 125W 0 100 RESISTOR 524 1 IWF TC 20 15 RESISTOR 660 1 1W TC 04 15 RESISTOR 1 62 1 125W F TC 0 10 RESISTOR TRMR 50 10 C SIDE ADJ 17 TRN RESISTOR 524 1 1W TC 0 15 RESISTOR 10K 01 1W TC 204 5 RESISTOR 1 1174K 01 1W TC 0 5 RESISTOR 133K 1 125W F TC 0 100 RESISTOR 196 1 OSW TC 0 100 RESISTOR 2 15K 1 OSW F TC 0 100 Mfr Code 28480 284
30. 6 52 SQ 28480 12510600 1 1902 0680 7 9 DIODE ZNR 1N8327 6 2V 5 PD 4W 24046 13827 Rele te section 7 for Pactury Onmepanent section 51 gt Errata pati ehange rev 16JUL90 6 25 16 17 90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C ae Mfr Designation Number D Qty Description Code Mfr Part Number A5 2314A TO 2544 5 08902 60005 4 1 VOLTMETER ASSEMBLY 28480 08902 60005 2550A TO 2635A 08902 60101 1 1 VOLTMETER ASSEMBLY 28480 08902 60101 2635A AND ABOVE 08901 60284 0 1 VOLTMETER ASSEMBLY 28480 08901 60284 5 1 0180 2929 8 CAPACITOR FXD 68UF 10 10VDC 28480 0180 2929 5 2 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 1500156X9020B2 A5C3 0180 1746 5 CAPACITOR FXD 15UF 1096 20VDC 56289 150D156X9020B2 5 4 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 150D156X9020B2 5 5 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28460 0160 3879 A5C6 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC 28480 0160 3879 5 0180 1746 5 CAPACITOF FXD 15UF 10 20VDC 56289 150D156X9020B2 5 8 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 5 9 0180 0094 4 CAPACITOR FXD 100UF 75 10 25VDC AL 56289 30D107G025DD2 ASC10 0180 0374 3 6 CAPACITOR FXD 10UF 10 20VDC TA 56289 1500106 902082 5 11 0160 4387 4 3 CAPACITOR FXD 47PF
31. DESCRIPTION 08731 210 15100091 2190 0016 ORDER BY DESCRIPTION 1510 0091 2190 0016 ORDER BY DESCRIPTION 1810 0091 2190 0016 ORDER BY DESCRIPTION 1250 0083 2190 0016 ORDER BY DESCRIPTION 5020 8805 ORDER BY DESCRIPTION 5020 8837 ORDER BY DESCRIPTION ORDER BY DESCRIPTION ORDER BY DESCRIPTION 5020 5805 ORDER BY DESCRIPTION 5020 5837 ORDER BY DESCRIPTION ORDER BY DESCRIPTION 0515 1331 5041 8802 5062 3704 5062 3735 0510 0043 0510 1171 5052 3747 0510 0043 0510 1171 prac 6 167 Gg ep SS 00000000 2 V M theter te 7 6 168 tere te poset ea Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Mfr Designation N mber D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS MP7 08902 00066 1 2 SIDE COVER 28480 08902 00066 MP8 08901 00206 0 1 WINDOW 28480 08901 00206 MP9 5041 8819 8 2 STRAP HANDLE CAP FRONT 28480 5041 8819 0515 1239 2 SCREW MACH M3 X 0 8 12MM LG 00000 ORDER BY DESCRIPTION MP10 5041 8820 1 2 STRAP HANDLE CAP REAR 28480 5041 8820 0515 1239 2 SCREW MACH M3 X 0 8 12MM LG 00000 ORDER BY DESCRIPTION 11 5041 8801 8 4 FOOT STANDARD 28480 5041 8801 12 5001 0540 2 2 TRIM SIDE 28480 5001 0540 MP13 1460 1245 5 2 TILT STAND SST 28480 1460 1345 2314A TO 2912A MP14 08901 00097 7 1 FRONT PANEL EXCEPT 001 28480 08901 00097 14 08901 00107 0 1 001 ONL
32. Service Model 8901B AM Demodulator Assembly A6 The down converted signal from the IF Amplifier is filtered by a 2 5 MHz Low Pass Filter The AM IF Buffer drives the AM Demodulator The FM IF Buffer drives the FM Demodulator and rear panel IF OUTPUT connector The AM is demodulated by means of a precision half wave rectifier in an automatic level control ALC circuit The buffered IF signal is amplified by a Current Variable Amplifier then rectified detected by the AM and IF Average Level Detector The detected signal after carrier filtering represents the carrier level de component plus AM ac component The ac component accurately represents the AM only if the dc component is known or set to a known level The detected signal is filtered and amplified by the Level Amplifier and Carrier Filter The signal is then compared to a constant ALC Reference by the BW Control and Level Comparison Amplifier The output of this amplifier is the carrier level error error voltage is amplified by the Resistor Drive Amplifier which sets the current input to the Current Variable Amplifier Current variable resistors in the amplifier adjust the amplifier gain to cause the dc component of the carrier to equal the ALC Reference The amount of filtering in the Bandwidth Control and Level Comparison Amplifier determines the minimum AM rate which can be accurately demodulated An ALC Bandwidth Control line sets the ALC loop for a fast or slow respo
33. or WP MP60 MP13 MP58 MP40 P O MP15 MP39 M15 MP34 51 See 60 51 See 1 W32 Al MP47 See MP47 See MP47 See MP47 W20 W24 See 15 See MP15 See MP15 See MP15 See MP15 See MP15 See MP15 See MP15 W19 See MP60 W1 See MP59 MP59 MP60 Disassembly Procedures Knurled Nut Opt 010 only Front Dress Panel HP Logo Front Display Window Divider Strip Front Panel Display RFI Shield Front Sub Panel Retaining Clip Front Panel LINE Switch Star Washer Lock Washer Machine Screw Calibration Output Cable Assembly Opt 010 only except in combination with Option 001 Keyboard and Display Assembly A1 Support Shield Washer Lock Washer Machine Screw Cable Cable Keyboard and Display Insulator Machine Screw Lock Washer Washer Spacer Machine Screw Lock Washer Washer Cable Assembly BNC to SMC jacks Star Washer Cable Assembly Type N to SMC jacks Star Washer Knurled Nut except Opt 001 Knurled Nut except Opt 001 EE E Model 8901B Service Service Sheet 1 BLOCK e Overall Instrument PRINCIPLES OF OPERATION NOTE The following discussions cover the principles of operation of the Modu lation Analyzer Each discussion is based on and referenced to a service sheet An introductory level discussion of the principles of operation can be found in Section 1 of the Operation and Calibration Manual under the title Principles o
34. 200VDC CER 28480 0160 4389 A27C9 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 27 10 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 27 11 0160 4289 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 27 12 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 A27C13 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 A27C14 0160 4389 6 CAPACITOR FXD 100 200VDC CER 28480 0160 4389 27 15 0160 4389 6 CAPACITOR FXD 100PF 5PF 200VDC CER 28480 0160 4389 27 16 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 A27C17 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4289 27 18 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 27 19 0160 4389 6 CAPACITOR FXD 100 5PF 200VDC CER 28480 0160 4389 27 20 0160 4389 6 CAPACITOR FXD 100 200VDC CER 28480 0150 4389 A27C21 0160 0576 5 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 0576 A27C22 0160 0576 5 CAPACITOR FXD 1UF 20 50 0 CER 28480 0160 0576 27 23 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 27 24 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A27J1 1251 8417 3 2 CONN POST HDR 16 28480 1251 8417 A27J2 1251 8417 3 CONN POST 16 28480 1251 8417 A27J3 1200 0507 9 SOCKET IC 16 CONT DIP SLOR 28480 1200 0507 A27J4 1251 5169 6 CONNECTOR 6 POST 28480 125
35. 6 72 rev 16 40190 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Designation Number D Qty Description Code Mfr Part Number A17 08902 60104 SERIAL PREFIX 2642A AND ABOVE A17CR8 A17CRS A17DS1 A17E1 A17J1 A17J2 A17J3 A17J4 1717 1712 1713 174 1715 1716 1717 1712 1710 7 11 17 12 17 14 17 1 17 2 17 17 1 A1702 1703 1704 1705 1706 1707 1708 A1709 A17Q10 17011 17012 17013 17 1 A17R2 1783 17 4 A17R5 rev QO6NOV92 1901 1098 1 DIODE SWITCHING 1 4150 SOV 200MA 4 5 1901 1098 1 DIODE SWITCHING 1N4150 50V 2 4NS 1990 0524 3 1 LED LAMP LUM INT IMCD IF 20MA MAX BVA 5V 9170 0847 3 1 CORE SHIELDING BEAD 1250 1425 7 2 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 1250 1220 0 2 CONNECTOR RF SMC M 50 OHM 21900124 4 2 WASHER LK INTL T NO 10 185 IN ID 2950 0078 9 2 NUT HEX DBL CHAM 10 32 THD 067 IN THK 1250 1220 0 CONNECTOR RF SMC M 50 OHM 2190 0124 4 WASHER AK INTL T NO 10 1954N ID 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 9100 3822 4 4 INDUCTOR FIXED 120 1300 HZ 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 9100 3922 4 INDUCTOR FIXED 120 1390 HZ 9100 3922 4 INDUCTOR FIXED 120 1390 H2 9100 4434 5 1 INDUCTOR 249UH 2 1650 385 Qe 65 9100 3313 1 INDUCTOR
36. Set the signal generator to 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 20 MHz Press Allow the instrument to tune then press MHz Pressing the MHz key sets tuning to manual Connect high impedance dc coupled oscilloscope to A4J2 IF OUT The waveform should be TTL pulses with a period of approximately 670 ns If faulty see Service Sheet 10 and check the IF Limiters Reconnect the cable to A4J2 Connect the ac coupled oscilloscope to the rear panel FM OUTPUT Modulate the signal generator with 100 kHz peak deviation FM at a 1 kHz rate The oscilloscope should show the demodulated FM with an ac amplitude of 1 0 to 1 4 Vpp If faulty see Service Sheet 11 and check the Charge Count Discriminator Service Sheet BD3 Mode 8901B Service NOTE A slight fuzziness on the waveform is normal It is the doubled 1 5 MHz IF carrier 6 Connect the oscilloscope to A4TP5 FM OUT The waveform should be 3 6 to 4 4 Vpp If faulty see Service Sheet 11 and check the FM Output Amplifier and Squelch NOTE This waveform will have even more of the doubled 1 5 MHz carrier on it 75 FM Calibrator Check 1 Connect a high impedance ac coupled oscilloscope with 10 1 divider probe to A51TP2 TRAPEZOID OUT Press FM and CALIBRATE The waveform should be trapezoida
37. 15 5 0757 0199 3 A15R6 A15R7 0698 7209 4 A15RB 0757 0421 4 A15R9 0757 0199 3 2314A TO 2414A 18810 0698 7207 2 2422 AND ABOVE 16 10 0699 1213 0 15811 0698 7209 4 A15R12 0757 0421 4 A15R13 0757 0199 3 15 14 0757 0394 0 Rele 10 section 7 for update information 6 62 Table 6 3 Replaceable Parts Description COVER FR INPUT SCREW MACH 6 32 25 IN LG PAN HD POZI GROUND STRAP GROUND STRAP SUPPORT SHIELO STRIP FINGERS BE CU ZINC PLATED AFI STRIP FINGERS BE CU ZINC PLATED NOT ASSIGNED NOT ASSIGNED CONNECTOR FINGER CONNECTOR FINGER WASHER FL NM NO 6 NM 144 IN ID TRANSISTOR PNP 2N2907A SI TO 18 400MW TRANSISTOR PNP 2N2907A SI 18 PD 400MW NOT ASSIGNED TRANSISTOR PNP 2N2907A S TO 18 PD 400MW TRANSISTOR PNP 2N2907A SI TO 18 400MW TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW TRANSISTOR PNP PD 300MW 150MHZ TRANSISTOR PNP SI PD 300MW FT 150MHZ TRANSISTOR NPN 1 300MW FT 200 2 RESISTOR 75 1 OSW F TC 0 100 RESISTOR 825 1 125W 0 100 RESISTOR 19 6 1 05W F TC 0 100 RESISTOR 19 6 1 05W 0 100 RESISTOR 21 5K 1 125W TC 0 100 NOT ASSIGNED RESISTOR 75 1 05W TC 0 100 RESISTOR 825 1 125W F TC 0 100 RESISTOR 21 5K 1 125W F TC 2 0 100 RESISTOR 61 9 1 05W TC 0 100 RESISTOR 61 59 1 1W TC 04 200 RESISTOR 75 1 OSW TC 0 100 RESISTOR 825 1 125W F TC 0 100 RESI
38. 1902 004 1 1902 0064 1902 0064 1902 0064 1902 0064 A por 6 95 ta 6 96 fo update anforniatieon Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q Mtr ty Description Designation Number y 20 08901 60262 4 1 LO CONTROL ASSEMBLY 28480 A20C1 0160 4835 7 3 CAPACITOR FXD 1UF 10 50VDC CER 28480 A20C2 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0180 1746 5 2 CAPACITOR FXD 15UF 10 20VDC 56289 A20C4 0160 4835 7 CAPACITOR FXD 1UF 10 50 CER 28480 A20C5 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 A20C6 0180 0269 5 1 CAPACITOR FXD 1UF 50 10 150VDC AL 56289 A20C7 0160 4801 7 2 CAPACITOR FXD 100PF 5 100VDC CER 28480 A20C8 0160 4832 4 8 CAPACITOR FXD 01UF 10 100VDC CER 28480 A20C9 0160 4801 7 CAPACITOR FXD 100PF 5 100VDC CER 28480 A20C10 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 20 11 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 20 12 0160 4807 3 1 CAPACITOR FXD 33PF 5 100VDC CER 0 30 28480 20 13 0180 0197 8 1 CAPACITOR FXD 2 2UF 10 20VDC 56289 20 14 0160 4814 2 1 CAPACITOR FXD 150PF 5 100VDC 28480 20 15 0160 4832 4 01UF 10 100VDC CER 28480 A20C16 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 20 17 0160 0161 4 1 CAPACITOR FXD 01UF 10 200VDC POLYE 28480 A20C18 0160 3324 7 1
39. 28480 04713 01295 28480 28480 28480 28480 28480 28480 28480 28480 28480 24546 24546 24546 24546 24546 24546 03888 24546 24546 03888 Factory Selected Component Refer to Section 5 Model 8901B Mfr Part Number 1901 0179 1901 0179 1901 0179 1901 0179 9170 0029 9170 0029 1250 1220 2190 0124 2950 0078 9140 0112 9140 0264 004414 012G 9140 0112 9100 1615 004414 010G 9100 1616 9140 0180 9100 1616 9140 0112 08901 00026 ORDER DESCRIPTION 5001 0176 5001 0176 2N2222A 2N2904A 1200 0173 1854 0610 1854 0610 1854 0247 1854 0247 1854 0610 1854 0610 1853 0001 1200 0173 C4 1 8 T0 101 F C4 1 8 T0 101 F 4 1 8 0 909 C4 1 8 TO 1001 F 4 1 8 0 4641 4 1 8 0 6811 PME55 1 8 T0 21R5 F 4 1 8 0 4641 4 1 8 0 6811 PMES5 1 8 TO 21R5 F A Errata part change rev 01 0191 Model 8901B Reference HP Part C Qty Designation Number D A22R11 0698 0082 7 A22R12 0698 0082 7 22914 0698 0082 7 A22R15 0698 8004 9 4 A22R16 0698 8004 9 A22R17 0698 3445 2 A22R18 07570398 4 A22R19 0698 0082 7 A22R20 0698 0082 7 A22R21 0698 8004 9 A22R22 0698 8004 9 A22R23 0757 0400 9 A22R24 0698 0082 7 A22R25 0698 3430 5 A22R26 0757 0394 0 A22R27 0698 3435 0 1 A22R28 0757 0421 4 A22R29 0757 0394 0 A22R30 0698 3156 2 A22R31 0698 3446 3 A22R32 0757 0438 3 A22R33 0757 0403 2 A22R34 0757 0346 2 A22R35 0757 0401 9
40. 4 1 8 0 1622 3168331 3168331 3168331 3168331 3168331 3168331 3168331 3168331 3168331 3168331 208 221 208 221 208 221 208 221 208A221 208A221 C4 118 T0 147R F C4 1 8 T0 147R F 208A221 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 5060 9436 A Errata part change rev 16 JUL90 ee ee ee Mode 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part i Mfr Designation Numbef D Qty Description Code Mfr Part Number A1S21 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 28480 5060 8436 A1S22 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1523 5050 9436 7 PUSHBUTTON SWITCH P C MOUNT 26480 5060 9436 A1S24 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 26480 5060 8436 1525 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 A1S26 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 28480 5060 9436 A1S27 5060 0436 7 PUSHBUTTON SWITCH P C MOUNT 28480 5050 9436 A1S28 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 28480 5060 9436 1529 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1530 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 8436 1531 5060 9436 PUSHBUTTON SWITCH MOUNT 28480 5060 8436 1532 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 28480 8060 9436 1534 5060 9436 7 PUSHBUTTON SWITCH MOUNT
41. 4 118 51 1 C4 1 8 TO 51R1 F 3 1 8 70 1001 4 1 8 0 1001 3 1 8 70 1001 3 1 8 0 2871 4 1 8 70 2871 3 1 8 70 2871 C3 1 8 TO 68R1 F C3 1 8 TO 511R F C4 1 8 T0 68R1 F C4 1 8 T0 511R F C3 1 8 TO S 11 C4 1 8 T0 178R F C4 1 8 T0 68R1 F C4 1 8 T0 68R3 F 1 8 0 1788 C4 1 8 T0 2610 F 4 1 8 10 1002 4 1 8 70 1002 C3 1 8 TO 75R0 F C4 1 8 T0 68R1 F C3 1 8 TO 75R0 F C3 1 8 TO 511R F C3 1 8 T0 1001 F 0698 3132 C3 1 8 TO 51R1 F 4 1 8 2610 4 1 8 2610 C4 118 TO 2610 F 1 8 2610 b O _ _ __ 93 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Q uve Mfr _ ty Description Mfr Part Number Designation Number D y A19TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 9 2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ 50 28480 1251 0600 1901 1820 1225 4 1 IC FF ECL D M S DUAL 04713 MC10231P A19U2 1626 0372 2 6 IC MISC 8 DIP P PKG 28480 1826 0372 A19U3 1825 0013 8 2 AMP LOW NOISE 99 PKG 06665 SSS741CJ 1904 08901 67002 4 1 FREQUENCY DUBLER 28480 08901 67002 0340 1098 0 INSULATOR XSTR TFE 28480 0340 1098 1251 1556 7 CONNECTOR SGL CONT SKT 018 IN BSC SZ 28480 1251 1556 1905 1826 0372 2 IC MISC 8 DIP P PKG 28480 1826 0372 A19U6 1820 0817 8 IC FF ECL D M S DUAL 04713 MC10131P A19U7 1820 1940 0 2 CNTR ECL BIN SYNCHRO P
42. DM 19F202FO300WVICR 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 DM19F202FO300WV 1 barata part charge 6 15 a SS LLL Replaceable Parts Reference HP Part Qty Designation Number D 42 0160 6606 4 A3C35 A3C36 0140 0196 3 A3C37 0160 4084 8 A3C38 A3C39 0160 3879 7 A3C40 0160 3879 7 A3C41 0160 3879 7 42 0160 2204 0 3 4 0160 2201 7 1 A3C44 0180 0291 3 9 45 46 2314 2505A A3C47 0160 3165 4 1 A3C48 0160 2302 9 2514A AND ABOVE A3C47 0160 5340 1 A3C48 0160 4217 9 A3C49 0160 5201 3 2 A3C50 0160 3879 7 A3C51 0160 3879 7 52 0160 5201 3 2314A TO 2505 A3C amp 3 0160 2302 9 2514A AND ABOVE A3C53 0160 4217 9 A3C54 A3C55 0160 3879 7 56 0160 3879 7 57 0160 3879 7 58 0180 0116 1 4 A3C59 0160 3879 7 A3C60 0160 3879 7 A3C61 0160 3879 7 A3C62 0160 3879 7 A3C53 64 0180 0228 6 65 0180 0228 6 A3C66 A3C67 A3C68 0180 0058 0 Refer to section 7 for update conformation 6 16 Table 6 3 Replaceable Parts Description CAPACITOR FXD 02UF 4 196 200VDC NOT ASSIGNED CAPACITOR FXD 150PF 5 300VDC MICA CAPACITORF FXD 1UF 20 50VDC CER NOT ASSIGNED CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 100PF 5 300VDC MICA CAPACITOR FXD 51PF 5 300VDC MICA CAPACITOR FXD 1UF 1096 35VDC TA NOT ASSIGNED NO
43. NOTE This check assumes that Local Oscillator Tuning Check and Local Oscillator Level Check give positive results but that track mode tuning is suspected to be faulty 1 Set signal generator to approximately 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT 2 Connect high impedance dc coupled oscilloscope to the rear panel FM OUTPUT 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument After the Modulation Analyzer is tuned press MHz then S Shift FREQ ERROR The oscilloscope should show 1 to 1 Vdc If it does not see Service Sheet 11 and begin by checking the Charge Count Discriminator 4 Adjust the oscilloscope to vertically center the trace Adjust the signal generator s frequency until the displayed frequency error is 500 kHz The oscilloscope display should move down to between 3 2 and 2 8V If faulty see Service Sheet 11 and check the Charge Count Discriminator 5 Adjust the signal generator s frequency until the displayed frequency error is 500 kHz oscilloscope display should move up to between 2 8 to 3 2V If faulty see Service Sheet 11 and check the Charge Count Discriminator 6 Adjust the signal generator s frequency until the displayed frequency error is 0 0 kHz Key in 3 1 SPCL to set the IF to 455 kHz The oscilloscope display should move down to between 8 to 6V If faulty see Service Sheet 11 and check
44. TTL LS 3 TO 8 LINE S INP 01295 SN74LS138N Sertion 7 for update information Factory selected Coiipapent eles to section 5 A Eriata pari change rev 16JUL90 6 19 Replaceable Parts Reference HP Part Qty Designation Number D A3U21 1820 1272 1 1 A3U22 1820 1112 B 5 A3U23 1820 1195 7 1 1902 0041 4 10 A3VR2 1902 0048 1 2 1902 0048 1 1902 0041 4 A3VR5 1902 0041 4 tHefer section 7 for updare 6 20 Table 6 3 Replaceable Parts Description iC BFR TTL LS NOR QUAD 2 INP FF TTL LS D TYPE POS EDGE TRIG IC FF TTL LS D TYPE POS EDGE TRIG COM DIODE ZNR 5 11V 5 DO 35 PD 4W DIODE ZNR 6 81V 596 DO 35 PD 4 DIODE ZNR 6 81V 5 00 35 PD 4W DIODE ZNR 5 11 596 DO 35 PD 4W DIODE ZNR 5 11V 5 00 35 PD 4 Mfr Code 01295 01295 01295 28480 28480 28480 28480 28480 Factory Selected Component Pelei to section Model 8901B Mfr Part Number SN74LS33N SN74LS74AN SN74LS175N 1902 0041 1902 0048 1902 0048 1902 0041 1902 0041 A Eriata part change rev 16 UL90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Mfr Designation Number D Qty Description Code Mfr Part Number A4 4 08901 60184 9 1 FM DEMODULATOR ASSEMBLY 28480 08901 60184 4 1 0160 4084 8 CAPACITOR FXD 1UF 20 5 28480 0160 4084 4 2 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC TA 5
45. alid ROM part numbers ROM Number Part Number 1 08902 80090 2 08902 80091 3 08902 80092 Table 8D 16i Data Line Signatures Step 9 2718A and above Fest Point Signature Valid ROM part numbers ROM Number Part Number 08901 80105 08901 80106 08902 80107 rev 23MA R87 Service Sheet BDS 82 57 2 05 Service Model 8901B CPU External Register RAM Check 1 Perform the Power Up Checks on Service Sheet BD lt 4 gt CPU 1 0 Port Check l If the Digital Test Extender Board is not already extending A12 or A13 plug it into the empty slot in the Digital Section NOTE Check that the ROMC switches on the extender board are in the OPEN position 2 Key in 0 2 SPCL Check the INSTRUMENT BUS test points on the extender board with an oscilloscope or signature analyzer probe used as a logic probe as listed in Table 8D 17 If faulty see Service Sheet 24 and check the CPU and 1 0 port decoders and buffers Table 8D 17 Instrument Bus Data Y Step 2 Test Point Measured Signal ENABLE 2 Low Going TTL Pulses Period 2 60 ms SELECT 0 to 3 TTL Low DATA 0103 TTL Low DATA L Oto3 TTL High 3 Key in 0 2 S Shift 5 S 5 SPCL Recheck the test points listed in Table 80 18 If faulty see Service Sheet 24 and check the CPU and J O port decoders and buffers Table 80 18 Instrument Bus Data Step 3 Test Point SELECT 0 to 3 DATA H 0 to 3 DATA L 0 to 3 Mea
46. hour used in amplifier parts list di rois er ewes peus division HV uer high voltage DPDT double pole 2 Canh rasa Hertz doubie throw IO as our EYE integrated circuit SION ORC drive ID inside diameter DSB double sideband IE vereda s aoa intermediate DTL diode transistor frequency logic IMPG impregnated DVM digital voltmeter undas incandescent ECL o2 es emitter coupled INCL cord rr Tua include s logic INE e input EMF electromotive force INS insulation NOTE All abbreviations in the parts list will be in upper case a ee Replaceable Parts integrated circuit microcircuit electron tube voltage regulator breakdown diode cable transmission crystal unit piezo electric or quartz tuned cavity tuned circuit IN orae wets internal kilogram i A kilohertz kilohm KV AS kilovolt IB pound LG ate eae a inductance capacitance LED light emitting diode low frequency dc long eor ERAT left hand CIM eurer sace a limit LIN oes linear taper used in parts 115 LK WASH lock washer LO 5224722 low local oscillator LOG cs logarithmic taper used in parts list lg REF logarithm ic LPE us low pass filter LV
47. indicates that it is the third least significant bit of the undecoded select code and L indicates that the line is true 1 when the logic level is low All bit position numbering begins with 0 The select codes go out on the Instrument Bus through Select Buffers which are simple inverters Thus s2 L goes out on the bus as s2 H Decoded codes are labeled as e 1 L for example The e indicates an enable code indicates decoding 1 indicates a decoded hexadecimal 1 binary 0001 and L indicates the logic level corresponding to a true The mnemonic e 1 corresponds to e3e2e1e0 0001 Data codes are also buffered However unbuffered data lines are also connected to the Instrument Bus for reading back data to the I O ports Figure 8D 7 illustrates how the 50 Hz High Pass Filter is selected The filter not shown is activated when the output line of the High Pass Filter Control A3U16 labeled 50 Hz HPF L goes low Register U16 is simply a latch it does not decode the data To activate the 50 Hz High Pass Filter the CPU sends out the binary enable code 0001 hexadecimal 1 select code 0100 hexadecimal 4 and data code 0010 hexadecimal 2 The Enable Decoder activates the line e 1 L The decoder was enabled because e3 H was low Since s3 H is low and since e 1 L is also low the Select Decoder A3U20 is enabled The three least significant bits of the select code are decoded and activate the s 4 L line o
48. low voltage Hos oe wa Gee meter distance milliampere cos x beo maximum M msi megohm MEG meg 106 used in parts list MET FLM metal film MET OX metallic oxide MF medium frequency microfarad used in parts list MFR manufacturer iuo Dvd Rr e milligram MHZ megahertz mnc E es millihenry mho Lora eod ta mho mifi aoe 22 minute time T tees minute plane angle MINAT miniature OM rues reed millimeter 6 3 Replaceable Parts MOD modulator MOM momentary MOS metal oxide semiconductor NS vues o s millisecond MTG bean E Es mounting MTR ors meter indicating device mV millivolt mVac millivolt ac mVdc millivolt dc mVpk millivolt peak mVp p millivolt peak to peak mVrms millivolt rms mW nisu milliwatt MUX multiplex NUT htt era mylar E microampere uF we amines microfarad iets Vee ws microhenry micromho HS microsecond a microvolt microvolt VOC microvolt dc uVpk microvolt peak microvolt peak to peak microvolt rms is MENTA microwatt DA os e nanoampere NG eat tre owk no connection ours normally closed NE ees EHE neon NEG negative D
49. 0 100 RESISTOR 2 61K 196 125W TC 204 100 RESISTOR 100K 1 125W 0 100 DIODE ZNR 68 1V 5 PD 4W 079 DIODE ZNR 68 1V 5 00 7 4W TC 079 NOT ASSIGNED CONNECTOR PC EDGE 22 CONT ROW 2 ROWS Plea tae tele pend s Oden ip gt oft Mfr Code 28480 24546 24546 24546 24546 24546 24546 28480 28480 28480 ga eee Model 8901B Mfr Part Number 1884 0276 4 1 8 10 101 C4 1 8 T0 100 1 F C4 1 8 TO 1001 F 4 1 8 0 2611 C4 1 8 TO 261 1 F C4 1 8 T0 1003 F 1902 338 1 1902 3381 1251 1365 rev LOS UL YO 222 222 16 701 90 Mode 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C qt D Mfr escription Mfr Part Number Designation Number D y 27 08901 60140 7 1 DIGITAL MOTHER BOARD ASSEMBLY 28480 08901 60140 27 1 0160 4389 6 27 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C2 0160 4389 6 CAPACITOR FXD 100 SPF 200VDC CER 28480 0160 4389 A27C3 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C4 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C5 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 6389 27 6 0160 4389 6 CAPACITOR FXD 100PF 200VDC CER 28480 0160 4389 A27C7 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 27 8 0160 4389 6 CAPACITOR FXD 100PF
50. 0 100 24546 4 1 8 0 1003 A6R25 0698 3445 2 RESISTOR 348 1 125W TC 0 100 24546 Ca 1 8 TO 348 R F AS6R26 07570438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 4 1 8 0 5111 A6R27 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A6R28 0757 0458 7 RESISTOR 51 1K 196 125W 04 100 24546 4 1 8 70 5112 A6R29 0757 0458 7 RESISTOR 51 1K 196 125W TC 04 100 24546 4 1 8 0 5112 A6R30 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F A6R31 0698 3157 3 RESISTOR 19 6K 1 125W 04 100 24546 4 1 8 10 1962 AGR32 0698 3157 3 RESISTOR 19 6K 1 125W 0 100 24546 C4 1 8 T0 1962 F A6R33 0757 0416 7 RESISTOR 511 1 125W 0 100 24546 C4 1 8 T0 511R F A6R34 0698 3154 0 RESISTOR 4 22 1 125W TC 0 100 24546 C4 1 6 T0 4221 F A6R35 0757 0338 2 4 RESISTOR 1K 1 25W TC 0 100 24546 5 1 4 1001 A6R35 07570401 0 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 0 101 A6R37 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 A6R38 0757 0438 3 RESISTOR 5 11K 1 125W TC 04 100 24546 C4 1 8 T0 5111 F A6R39 0757 0443 Q 3 RESISTOR 11K 196 325W TC 0 4 100 24546 4 1 8 70 1102 A6R40 NOT ASSIGNED thefer te section 7 for update iufotinatiou Factory selected Component Refer to section 5 A part change rev JOJULGO gp T rev J6OJULIO 6 3 Model 8901 Replaceabl
51. 0 100 24546 C4 1 8 T0 101 F A50R49 07570401 0 RESISTOR 100 1 125W 0 100 24546 C4 1 8 T0 101 F ASORSO 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 4 100 24546 4 1 8 0 5111 ASORS1 0757 0394 0 RESISTOR 51 1 195 125W 0 100 24546 C4 1 8 T0 51R1 F 50 52 0757 0394 0 RESISTOR 51 1 1 125W TC 20 100 24546 4 1 8 70 51 1 ASORS3 0757 0438 3 RESISTOR 5 11K 1 125W TC 2 0 4 100 24546 C4 1 8 TO 511 1 F ASORS4 0757 0419 0 RESISTOR 681 1 125W 0 100 24546 C4 1 8 T0 68 1 R F 50 55 0757 0438 3 RESISTOR 5 11K 1 125W F TC 20 100 24546 4 1 8 0 5111 AS50R56 0698 0085 0 RESISTOR 2 61K 1 125W TC 0 100 24546 C4 1 8 T0 2611 F A50R57 0757 0419 0 RESISTOR 681 1 125W 0 100 24546 C4 1 8 T0 68 1R F 50858 0757 0438 3 RESISTOR 5 11K 1 125W 0 100 24546 4 1 8 0 5111 50859 0698 0085 0 RESISTOR 2 61K 1 125W Q 100 24546 C4 1 8 T0 2611 F 50850 0698 3153 9 RESISTOR 3 83K 1 125W 0 100 24546 C4 1 8 T0 3831 F ASOR61 0757 0394 0 RESISTOR 51 1 1 125W F TC 0 100 24546 4 1 8 0 5191 50 62 0757 0394 0 RESISTOR 51 1 1 125W 0 100 24546 C4 1 8 T0 51R1 F ASOR63 0757 0440 7 RESISTOR 7 5K 1 125W TC 0 100 24546 4 1 8 0 7501 50 64 07570440 7 RESISTOR 7 5K 1 125W 0 100 24546 4 1 8 0 7501 ASOR65 0757 0416 7 RESISTOR 511 1 125W TC 04 100 24546 CA 1 8 TO 511R F ASOR66 06
52. 07570422 07570416 0698 3438 0698 3438 0698 3438 0757 0726 0698 3441 0698 3441 0698 3441 0757 0416 0757 0416 0757 0397 0698 7209 0698 7205 D aR amp NWO 4 do C 4 CD e Pe rone Prset Qty Table 6 3 Replaceable Parts Description RESISTOR 511 1 RESISTOR 68 1 19 RESISTOR 68 1 1 125W 0 4 100 125W TC 0 100 125 F 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 511 1 RESISTOR 511 1 RESISTOR 511 1 RESISTOR 261 1 RESISTOR 261 1 RESISTOR 261 1 RESISTOR 10K 1 RESISTOR 909 1 RESISTOR 23 7K 1 125W TC 0 100 RESISTOR 61 9 1 125W TC 0 100 125W TC O 100 125W F TC 04 100 125W F TC 04 100 125W F TC 0 100 125W F TC 0 100 125W 0 100 125W TC 0 100 125W F TC 0 100 RESISTOR 75 1 1252 TC 0 100 RESISTOR 511 1 NOT ASSIGNED RESISTOR 100K 1 125W F 0 100 RESISTOR 68 1 1 RESISTOR 62 1 1 RESISTOR 422 1 RESISTOR 68 1 1 RESISTOR 1 96K 1 125W 0 100 RESISTOR 909 1 NOT ASSIGNED RESISTOR 909 1 RESISTOR 511 1 RESISTOR 147 1 RESISTOR 147 1 RESISTOR 147 1 125W 0 100 125W TC 20 100 125W TC 0 100 125W F 0 100 25W TC 100 125W TC 0 100 125W TC 0 100 125W TC 0 100 125W TC 0
53. 1 3404 7 9 aana MP49 PLUG MP49 PLUG MP51 PLUG EXCEPT OPT 001 EXCEPT OPT 001 EXCEPT OPT 001 J11 OPT 001 ONLY 12 001 ONLY 42 3 001 ONLY MP60 LABEL ON TOP MP62 J6 J J8 J9 J10 COVER LABEL T1 TRANSFORMER ASSY 29 2 15 HEATSINK MP49 PLUG Ai d 1 uo EXCEPT 001 wh E i Ne 7 SERIES REGULATOR J12 HEAT SINK ASSY B1FAN ASSY MP50 PLUG EXCEPT OPT 001 J15 OPT 001 ONLY MP49 PLUG f EXCEPT 003 MEME E ar EE 12595 FUSE MP49 PLUG MP18 EXCEPT OPT 003 JM 003 ONLY J16 J17 J18 J19 A30 MP58 LABEL LINE POWER ASSY MP72 LABEL A31J1 MP62 LABEL MP61 LABEL OPT 004 ONLY 91068 1900 seq 06729744 51 9 2400 0 9 4 3811 GALNNOW YSQNN LING 381M YANIVLAY 1 11910 84 310N 1804405 LONG ZGdW 310 A lddfiS 3 04 83AO Y3A09 LING 89dW 310 6SdW 11 SLM 8cdW L9dW A1NO C00 01140 S9dW GEM zi 200 01140 1439 3 LUM 6cM 994 oan 91 LIM GCM 0 dW 81M 61M 91068 syed Model 8901B Replaceable Parts MP54 CENTER STRUT BRACE ATTACHES TO MP17 MP17 W47 MP23 GASKET
54. 100 RESISTOR 1 33K 1 125W TC 0 100 RESISTOR 50 5 1 125W TC 20 25 AMP LOW NOISE 99 PKG AMP GP TO 99 PKG DIODE ZNR 1N827 6 2 5 DO 7 4W DIODE ZNR 8 2V 5 DO 35 PD 4W 065 Mfr Code 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 06665 31 585 24046 28480 Model 8901B Mfr Part Number C4 1 8 T0 7501 F C3 1 8 T0 1003 F C4 1 8 T0 1003 F C3 1 8 T0 1003 F C4 1 8 T0 1001 F 4 1 8 0 1001 C4 1 8 T0 1002 F C4 1 8 T0 5111 F C4 1 8 T0 75RO F C4 1 8 T0 1331 F 0698 8581 SSS741CJ CA301AT 1N827 1902 0956 paito rev 16JUL90 Model 8901 Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Q Mfr ty Description Mfr Part Number Designation Number D y Code ASO 08901 50220 4 1 AM CALIBRATOR ASSEMBLY 28480 08901 80220 5 1 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 2 0380 0058 0 CAPACITOR FXD SOUF 75 10 25VDC AL 56289 30D506G025CC2 5 0180 0058 0 CAPACITOR FXD 50UF 75 10 25VDC AL 56289 3005060025 2 50 4 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC TA 25088 O6R8GS1B35K 50 5 0160 2459 9 CAPACITOR FXD 020 20 100VDC CER 28480 0160 3459 50 6 0180 2619 3 CAPACITOR FXD 22UF 10 15VDC TA 25088 D22GS1815K 50 7 0
55. 100 RESISTOR 1 33K 1 125W TC O 100 RESISTOR 10K 1 125W F TC 0 100 RESISTOR 5 11 1 125W TC 0 100 NOT ASSIGNED RESISTOR 196 1 125W TC 6 100 RESISTOR 22M 5 25W 900 1200 RESISTOR 196 1 125W F TC 0 100 NOT ASSIGNED RESISTOR 100 1 125W TC 0 100 RESISTOR 215K 196 125W TC 2 04 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC S2 SQ IC OP AMP LOW DRIFT TO 99 PKG IC OP AMP GP TO 99 PKG OP AMP LOW DHIFT 99 PKG iC OP AMP LOW NOISE DUAL 8 DIP C PKG SWITCH ANLG QUAD 16 PKG IC OP AMP LOW BIAS H IMPD 39 COMPARATOR PRCN TO 99 PKG iC LCH TTL LS D TYPE 4 IC DCDR TTL LS 3 TO 8 LINE 3 INP IC GATE TTL LS NAND QUAD 2 INP NOT ASSIGNED DIODE ZNR 7 87V 2 DO 35 PD 4W DIODE ZNR 1N827 6 2V 5 00 7 PD 4W DIODE ZNR 3 83V 5 DO 35 PD 4W EFactoiy selected Component te Mfr Code 24546 24546 24546 24546 28480 24546 24546 24546 24546 24546 03888 24546 24546 24546 24546 24546 28480 24546 28480 01121 24546 24546 24546 24546 24546 24546 24546 24546 24546 01121 24546 24546 24546 28480 28480 27014 3L585 27014 18324 17856 27014 01295 01295 01295 01295 28480 24046 28420 Tee tion s a eS eS Model 8901B Mir Part Number C4 1 8 T0 4640 F 4 1 8 0 196 5 1 4 1001 C4
56. 125W 0 100 28480 0698 8827 23 26 0698 8827 4 RESISTOR 1M 1 125W 0 100 28480 0698 8827 pe tection 7 for apdate information a Bele see baggy pre rev 16JUL90 6 109 aooo _ SSeS Se ee eS 7775 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Q inti Mfr ty Description Mfr Part Designation Number D y art Numbe 23827 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 A23R28 07570280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 3001 F A23R29 0757 0438 3 RESISTOR 5 11K 1 125W TC 2 0 100 24546 4 1 8 0 5111 A23R30 0698 3151 7 RESISTOR 2 87K 1 125W TC 204 100 24546 C4 1 8 T0 2871 F A23R31 0698 3151 7 RESISTOR 2 87K 1 125W F TC 0 100 24546 C4 1 8 T0 287 1 F A23R32 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F A23R33 2100 2633 5 RESISTOR TRMR 1K 10 C SIDE ADJ 1 TRN 30983 50 102 A23R34 0757 0289 2 RESISTOR 13 3K 1 125 TC 204 100 19701 MF4C1 8 TO 1332 F A23R35 0757 0394 0 RESISTOR 51 1 1 125W FTC 04 100 24546 4 118 0 51 1 A23R36 0698 7212 9 RESISTOR 100 1 05W TC 0 100 24546 C3 1 8 TO 100R F A23R37 0757 0394 0 RESISTOR 51 1 1 125W TC 0 100 24546 C4 1 8 T0 51A1 F A23R38 0757 0289 2 RESISTOR 13 3K 1 125W TC 0 100 19701 4 1 8 0 1332 A23R3
57. 125W TC 0 100 24546 C4 1 8 TO 511R F A5R33 0698 6286 5 1 RESISTOR 100M 10 25W FC 900 1200 01121 CB1071 ASRU 0757 0442 9 RESISTOR 10K 1 125W F TC 0 100 24546 C4 1 8 T0 1002 F ASR35 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F ASR36 0757 0279 0 RESISTOR 3 16K 1 125W TC 0 100 24546 4 1 8 0 3161 A5R37 0757 0458 7 RESISTOR 51 1K 196 125W TC 0 100 24546 C4 1 8 T0 5112 F ASR38 2100 3353 B 1 RESISTOR TRMR 20K 10 C SIDE ADJ 1 TRN 28480 2100 3353 2314A TO 2443A ASR39 0698 3457 6 RESISTOR 316K 1 125W TC 0 100 28480 0698 3457 2449A AND ABOVE A5R39 0698 3454 3 RESISTOR 215K 1 125W TC 0 100 24546 C4 1 8 2153 F ASR40 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 TO 10 1 F ASRS 1 0698 8827 4 RESISTOR 1M 1 125W TC 04 100 28480 0698 8827 5 2 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F 5 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 511R F 2314A TO 2627A A5SR44 0757 0420 3 9 RESISTOR 750 1 125W TC 0 100 24546 4 1 8 0 751 5845 0698 3152 8 7 RESISTOR 3 48K 1 125W TC O 100 24546 4 1 8 0 3481 A5R46 0698 6360 6 3 RESISTOR 10K 1 125W TC 0 25 28480 0698 6360 6 4 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 C4 1 8 T0 2151 F ASR48 0698 6360 6 RESISTOR 10K 1 125W TC 0 25 28480 0698 6360 A5R49 0699 0847 4 3 RESISTOR 1 96K
58. 125W TC 0 100 RESISTOR 10 1 125W TC 0 100 RESISTOR 1 125W TC 0 100 RESISTOR 150 5 2W MO TC 0 200 RESISTOR 5 11K 1 125W 0 100 RESISTOR 10 5 ZW MO TC 0 200 RESISTOR 100 196 125W TC 20 100 RESISTOR 12 1K 1 125W TC 0 100 RESISTOR 5 11K 1 125W F TC 0 100 RESISTOR 2 15K 1 125W 0 100 RESISTOR 10K 1 125W 04 100 RESISTOR 10K 1 125W 204 100 RESISTOR 316 1 125W TC O 100 RESISTOR 17 8K 1 125W 0 100 RESISTOR 10K 1 125W TC 204 100 RESISTOR 110 1 125W TC 0 190 RESISTOR 2 15K 1 125W TC 0 100 RESISTOR 1 21K 1 125W TC 0 100 Pactery sebecdod etapenenr Refer te Mfr Code 04713 04713 24546 24546 28480 28480 24546 24546 19701 24546 19701 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 24546 24546 03888 24546 24546 24546 24546 28480 24546 27167 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 Replaceable Parts Mfr Part Number 2 5551 245551 C4 1 8 T0 5111 F 4 1 8 0 2611 0811 3290 0811 3293 4 1 8 0 2610 4 1 8 70 2619 MF4C1 8 TO 1332 F C4 1 8 T0 1001 F MF4C 1 8 T0 1332 F C4 1 8 T0 511R F C4 1 8 T0 751 F 4 1 8 0 2611 4 1 8 0 751 4 1 8 0 2611 CA 1 8 TO 511R F
59. 1901 0518 1901 0518 8170 0029 1250 1205 1250 1205 9100 1628 9140 0237 08901 00029 2190 0124 2950 0078 paii change 6 75 Replaceable Parts Reference HP Part C Qty Designation Number D 1801 1854 0071 7 1802 1854 0071 7 1803 1853 0018 0 1 A18Q4 1854 0477 7 1805 1853 0007 7 1806 1853 0007 7 A18Q7 1854 0610 0 5 A18R1 0698 3429 2 A18R2 0698 3429 2 A18R3 0757 0438 3 A18RA 0698 3155 1 A18R5 0757 0278 9 A18R6 0698 3153 9 ATBR7 0698 3434 9 A18RB 0757 0418 9 A18R9 0757 0416 7 18 10 0757 0416 7 A18R11 0698 3438 3 A18R12 0757 0438 3 A18R13 0698 0083 8 A18R14 0757 0338 2 A18R15 0698 3429 2 A18R16 0698 3446 3 A18R17 0698 3446 3 A18R18 0698 3445 2 A18R19 2100 0552 3 A18R20 0698 3150 6 A18R21 0698 3444 1 A18R22 0698 3440 7 A18R23 2100 3350 5 A18R24 0698 3446 3 A18R25 0757 0402 1 A18R26 0757 0395 1 A18R27 0757 0402 1 ATBR28 0698 3151 7 6 A18R29 0698 3447 4 A18R30 0757 0401 0 A18R31 0757 0422 5 A18R32 0698 3431 6 4 A18R33 0757 0401 o tiefer to Section T fos update information Table 6 3 Replaceable Parts Description TRANSISTOR NPN Si PD 300MW FT 200MHZ TRANSISTOR NPN SI 300MW FT 200MHZ TRANSISTOR PNP St 72 PD 200MW 1GHZ TRANSISTOR NPN 2N2222A SI TO 18 PD 500MW TRANSISTOR PNP 2N3251 TO 18 360MW TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW TRANSISTOR NPN S TO 46 FT 800MHZ RESISTOR 19 6 1 125W TC 0 100 RESISTOR 19 6 1 125W
60. 20 100VDC CER 28480 0160 3459 22 4 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A22C5 0160 3459 g CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 2459 22 6 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22C7 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 22 8 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A22C9 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 A22C10 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22C11 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22C12 0150 3456 6 2 CAPACITOR FXD 1000PF 10 1KVDC CER 28480 0160 3456 A22C13 0160 3456 CAPACITOR FXD 1000 10 1KVDC CER 28480 0160 3456 A22C14 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22C15 0160 4678 6 1 CAPACITOR FXD 560PF 1 100VDC MICA 28480 0160 4678 A22C16 0160 4679 7 1 CAPACITOR FXD 270PF 1 300VDC MICA 28480 0160 4679 22 17 0160 4456 8 1 CAPACITOR FXD 750PF 1 300VDC MICA 28480 01604456 22 18 0160 2328 9 1 CAPACITOR FXD 200 1 300VDC MICA 28480 0160 2328 22 19 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC 28480 0160 3459 22 20 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VOC 56289 1500225 9020 2 22 21 0160 2032 2 1 CAPACITOR FXD 510PF 5 500VDC MICA 28480 0160 2032 A22C22 0160 2030 0 1 CAPACITOR FXD 1200PF 5 500VDC MICA 28480 0150 2030 22 23 016
61. 2406A TO 2636A A17L8 9140 0840 3 1 A17L9 9140 0131 5 A17L10 9100 1626 1 1 2314A TO 2348A 171 11 08901 80001 1 1 2406 2636 AI7L11 9140 0841 4 1 17112 9140 0303 3 1 A17L13 9140 0121 5 A17L14 9100 1621 6 1 17 1 08901 00030 8 1 23600113 2 2190 0008 3 17 2 5001 0176 0 17 5001 0176 0 17 0363 0159 0 2314A TO 2413A Al7MP6 08662 00040 0 3 17 6 08662 00038 6 3 2414A TO 2636A 17 5 A17M P6 17 1 1853 0281 9 A1702 1853 0281 9 A1703 1853 0281 9 A1704 1854 0632 6 1 1705 1853 0020 4 pele te Section 7 for update miler ation 6 70 Table 6 3 Replaceable Parts Description 08901 60145 SERIAL PREFIX 2314A 2636A CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR FIXED 120 1300 HZ INDUCTOR RF CH MLD 240UH 5 1660X 385LG INDUCTOR RF CH MLD 18UH 10 166DX 385LG INDUCTOR RF CH MLO 10MH 5 25DX 75LG INDUCR VARIABLE INDUCR VARIABLE INDUCTOR RF CH MLD 10MH 5 25DX 75LG INDUCTOR RF CH MLD 36UH 5 166DX 385LG INDUCR VARIABLE INDUCR VARIABLE INDUCTOR RF CH MLD 89 3UH 2 INDUCTOR RF CH MLD 10MH 5 250X 75LG INDUCTOR RF CH MLD 18UH 10 166DX 385LG COVER MIXER SCREW MACH 6 32 25 IN LG PAN HD POZI WASHER LK EXT T NO 6 14 1 IN ID GROUND STRAP GROUND STRAP RFI STRIP FINGERS BE CU ZINC PLATED
62. 24355 17856 04713 04713 17856 17856 17856 17856 ya DOD a a a a Replaceable Parts Mfr Part Number 0699 0773 0699 0780 0698 6414 0699 0781 0699 0057 0699 0783 C4 1 6 T0 100 t F 2100 3352 0699 0057 0698 6414 4 1 8 0 751 4 1 8 0 2372 4 1 8 0 1001 2100 3274 0698 8827 4 1 8 0 751 2100 3354 4 1 8 0 5112 4 1 8 0 3832 C4 1 8 T0 3832 F C4 1 8 T0 4222 F 4 1 8 0 1001 4 1 8 10 1782 C4 1 8 T0 316R F 4 1 8 0 1003 C4 1 8 T0 287R F C4 1 8 T0 316R F 4 1 8 0 2152 4 11 8 10 6191 C4 1 8 T0 619R F 1251 0600 1251 0600 1251 0600 1251 0600 12510600 AD536AJ DG2018K MC34004BL MC34004BL DG2018K DG201BK DG2018P DG2018P 6 143 Replaceable Parts Reference Designation 5207 5208 5209 A52U10 AS2U11 521 12 52013 52014 A52U15 A52U16 A52U17 AS2U18 A52U19 AS52VR1 AS2VR2 AS2W1 52 2 2314A ONLY 52 W3 2332A AND ABOVE 52 W3 Part Number 1820 1216 1820 2096 1820 1144 1820 1417 1820 1445 3820 1112 1826 0191 1820 1195 1820 1195 1820 2096 1820 5543 1826 0783 1826 0606 1902 0961 1902 0961 8159 0005 8759 0005 8159 0005 yO 27 on Qty 207 fos peed te Table 6 3 Replaceable Parts Description TTL LS 3 TO 8 LINE 3 INP C
63. 28480 0160 3879 A17C5 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C6 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C7 0160 3873 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17CB 0180 0197 8 2 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 17 9 0160 3879 7 CAPACITOR FXD O1UF 20 100VDC CER 28480 0160 3879 17 10 0160 3879 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 17 11 0160 4535 4 5 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 17 12 0160 4835 7 5 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A17C13 0160 4812 0 1 CAPACITOR FXD 220PF 5 100VDC CER 28480 0160 4812 A17C14 0160 4652 6 1 CAPACITOR FXD 960PF 1 500VDC MICA 00853 RDM19F961F5C A17C15 0160 4647 3 1 CAPACITOR FXD 154PF 4 196 500VDC MICA 28480 0160 4647 17 16 0180 2929 8 1 CAPACITOR FXD 68UF 10 10VDC 28480 0180 2929 A17C17 0160 4646 8 1 CAPACITOR FXD 444PF 1 SOOVDC MICA 28480 0160 4646 A17C18 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A17C19 0160 4814 2 1 CAPACITOR FXD 150PF 4 586 100VDC CER 28480 0160 4814 A17C20 0160 4641 3 1 CAPACITOR FXD 3520PF 1 50VDC 28480 0160 4641 A17C21 0160 4835 CAPACITOR FXD 1UF 10 5 CER 26480 0160 4835 17 22 0160 4651 5 1 CAPACITOR FXD 817 1 500VDC MICA 00853 RDM19F 8B17 F5C A17C23 0160 0576 5 2 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A17C24 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER
64. 8159 0005 6 19020946 1902 3082 1902 3024 1902 0680 for np ite Qty 13 Table 6 3 Replaceable Parts Description RMS DC 10 METAL BPLR NOT ASSIGNED _ 1 OP AMP LOW BIAS H IMPD 99 PKG COMPARATOR 99 PKG COMPARATOR PRCN 99 PKG OP AMP GP 99 PKG OP AMP LOW NOISE 8 DIP C PKG NOT ASSIGNED AMP LOW BIAS H IMPD 99 PKG TIMER TTL MONO ASTBL MULTIPLXR 8 CHAN ANLG 16 DIP C PKG IC MULTIPLXR 8 CHAN ANLG 16 DIP C PKG IC MULTIPLXR 8 CHAN ANLG 16 DIP C PKG IC FF TTL LS D TYPE POS EDGE TRIG COM IC GATE TTL LS EXCL OR QUAD 2 INP IC LCH TTL LS D TYPE 4 BiT IC GATE TTL LS NAND QUAD 2 INP IC OP AMP LOW BIAS HIMPD TO 99 PKG TTL LS 3 TO 8 LINE 3 INP NOT ASSIGNED NOT ASSIGNED RESISTOR ZERO OHMS 22 AWG LEAD DIA 284 DIODE ZNR 3 3V 5 DO 35 PD 4W TC 039 DIODE ZNR 4 64 V 5 DO 35 DIODE ZNR 2 87V 5 DO 7 4W TC 07 DIODE ZNA 1N827 6 2V 5 DO 7 PD 4W baetory elected Commpesonst to te tron Mfr Code 28480 27014 27014 27014 01295 52063 27014 01295 17856 17856 17856 01295 01295 01295 01295 27014 01295 80 815 28480 28480 28480 24046 Replaceable Parts Mfr Part Number 1826 0969 LF256H LM211H LM211H LM201AL XR5534ACN LF256H 555 DG508BK DG508BK DG508BK SN74LS175N SN74LS86N SN74LS75N SN74L
65. A binary physical or logical state that corresponds to the true state Active of an input an output or a function The opposite of the inactive state 8A 17 Service Model 8901B Table 8 6 Schematic Diagram Notes 9 of 11 NAND GATE X B OR GATE WITH INVERTED INPUTS A X B NOR GATE A ae B AND GATE WITH INVERTED INPUTS J X B BUFFER AND GATE OR GATE EXCLUSIVE OR GATE A X B A gt X INVERTER OPEN EMITTER OUTPUTS ECL 1 EXTERNAL e PULL DOWN RESISTOR OPEN COLLECTOR OUTPUTS TTL EXTERNAL PULL UP RESISTOR INPUTS 18 Model 8901B Service Table 8 6 Schematic Diagram Notes 10 of 11 ACTIVE LEVELS Active High Input ACTIVE HIGH inputs and outputs are indicated by the ab ACTIVE _ sence of the polarity indicator symbol 1 LEVEL Active High Output Active Low Input i ACTIVE LOW inputs and outputs are indicated by the pres of the polarity indicator symbol N J ACTIVE Ly LEVEL Active Low Output EDGE SENSITIVE INPUTS EDGE SENSITIVE low to high inputs are indicated by the presence of the dynamic indicator symbol 5 Low to High OUTPUT Edge Sensitive INPUT EDGE SENSITIVE high to low inputs are indicated by the presence of both the dynamic indicator and the polarity in l dicator symbols p Hi
66. C4 1 8 TO 10RO F C4 1 8 TO Sti RE 1 8 75 12 2 lt 1 8 16 8252 4 1 5 70 511 C4 1 8 T0 1003 F C4 1 8 TO S1R1 F 2 102 1 8 688 F C4 1 8 T0 1001 F 4 1 8 0 348 Errata part change rev 122NOV92 4 A n Model 8901B Reference Designation A11R16 11817 A11R18 A11R19 A11R20 11 21 1822 1823 A11R24 A11R25 A11R26 A11R27 A11R28 A11R29 A11R30 1 31 11 32 A11R33 A11R34 A11R35 A11R36 A11R37 1638 11833 11 1 2 1 1 4 11 5 A11TPE A11TP7 A11U1 A11U2 1103 A11U4 A11U5 1106 1107 1108 1109 11010 11911 A11U12 A11U13 A11U14 A11U15 11016 11017 A11U18 A11U19 A11U20 A11U21 A11Y1 HP Part Number 0757 0280 0757 0280 0757 0280 0698 3153 07570438 0757 0416 0757 0416 0757 0398 0757 0280 0757 0397 0757 0438 0698 3429 0698 3445 0698 3445 0757 0424 0757 1000 0757 0438 0698 3432 0757 0401 0757 0401 0757 0280 1810 0206 07570465 0757 0280 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1820 0817 1820 0803 1820 1425 1820 1416 1820 1193 1820 0693 1820 1217 1820 1251 1820 1193 1820 1251 1820 1193 1820 1199 1820 1411 1820 1198 1200 0638 1820 1198 1200 0638 1820 0693 1820 1240 1820 1197 1820 1193 1820 1197 1820 0723 0410 0423 ooooo Qn OQ CON WON NN NN
67. GGP LEN roo Norda iog OL 100 3141144 d3IJIJdNY LO 1ndNI 0 9 al MI Ton aI lira wT LAdNI oe eee es ee eem ets AIGHSSSY BAXIN ifdNI Andhi JY SIY Service Model 8901B 0 UNDER TRANSFORMER 28 816 1 KEYBOARD 1 KEYBOARD xOption 030 assemblies only available for instruments with serial number prefixes 2314 TO 2636A Option 030 assemblies only available for instruments with serial number prefixes 2542 and above Block Diagram Assembly Locations SEE REVERSE SIDE 8E 6 3 AM DEMODULATOR ASSEMBLY 4 FM DEMOULATOR ASSEMBLY COUNTER IF IF b i BUFFER Ja TO gt LL BD5 lt IF our 4 J l i W25 oem em ew or IF DISC A2 AUDIO FILTERS ASSEMBLY IF OUT IF IN PRECISION CHARGE COUNT DISC OUT FM IN 2 J3 Hus LIMITER DISCRIMINATOR SQUELCH AMPLIFIER e Loy E90 HE vec 25 gt gt f gt SIT ies STAGE 1 STAGE 2 STAGE 3 ae l QUT i TO LO i AM IN 260 kHz SCUELCH FM DETECTOR CONTROL SQUELCH L LON PA S FILTER 0 46 W51 DETECTOR AMET i BUFFER b am eme c 09
68. TRANSISTOR NPN Si 300MW 200MHZ TRANSISTOR PNP SI TO 18 PD 360MW TRANSISTOR NPN 2N2222A SI TO 18 PD 500MW TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR SI PD 300MW FT 150MHZ TRANSISTOR NPN S 300MW 200MHZ RESISTOR 10 1 125W F TC a 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 316 1 125W TC 2 0 100 RESISTOR 5 11 1 125W F 0 100 RESISTOR 1 96K 1 125W F 0 100 RESISTOR 3 48K 1 125W 0 100 RESISTOR 5 7K 1 125 0 100 RESISTOR 3 83K 1 125W 0 100 RESISTOR 2 37K 1 125W TC 0 100 RESISTOR 5 11K 1 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 2 15K 195 125W TC 0 100 RESISTOR 1K 1 125W TC 20 100 RESISTOR 2 15K 1 125W TC 0 100 RESISTOR 215 1 125W TC 04 100 RESISTOR 2 15K 1 125W F TC 0 100 RESISTOR 23 7K 1 125W TC 0 100 RESISTOR 23 7K 1 125W TC 0 100 RESISTOR 3 24K 1 125W TC 0 100 RESISTOR 3 24K 1 125W 0 100 RESISTOR 10K 1 125W 0 100 RESISTOR 16 2K 1 125W 0 100 RESISTOR 1K 1 125W TC x 04 100 RESISTOR 1 96 1 125W 0 100 RESISTOR 1 96 1 tZ5W TC 0 100 RESISTOR 1 96 1 125W TC 0 100 RESISTOR 1 96K 1 125W TC 0 100 RESISTOR 100K 1 125W 40 100 RESISTOR 23
69. W19 08901 60064 COAX CABLE ASSY 934 28480 08901 60064 A11J2 A51J2 W20 08901 60055 COAX CABLE ASSY 94 28480 08901 60055 A11J3 A4J2 W21 08991 60169 COAX CABLE ASSY 4 28480 08901 60169 A11J4 Y1J1 OPTION 002 ONLY 1400 0510 CLAMP CABLE 15 DIA 62 WD NYL 28480 1400 0510 W22 08901 60163 COAX CABLE ASSY 2 28480 08901 60163 A11J5 REAR TIME BASE OUTPUT OPTION 002 ONLY W23 08901 60161 COAX CABLE ASSY 5 28480 08901 60161 A11J6 REAR TIME BASE INPUT Wea 08901 60054 COAX CABLE ASSY 926 28480 08901 60054 A4J1 A6J3 W25 08901 60043 COAX CABLE ASSY 957 28480 08901 60043 A6J2 A18J1 W26 08901 60044 COAX CABLE ASSY 902 28480 08901 60044 A6J4 OUTPUT IF w27 08901 60243 RIBBON CABLE ASSY 28480 08901 60243 A14J1 A31J2 W28 08901 60076 COAX CABLE ASSY 82 28480 08901 60076 ASQJ1 A51J1 W29 08901 60157 COAX CABLE ASSY 914 28480 08901 60157 A Faota yout bange 6 175 qigefer te rseetion 7 6 176 A17J1 A18J2 Roe teeny topap do 1 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C nt Mtr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS W30 NOT ASSIGNED EXCEPT OPTION 030 2314A 2636A 0 08901 60253 CABLE ASSEMBLY A16J1 TO A55J2 8 28480 08901 60253 OPTION 030 ONLY 2642A AND ABOVE W30 08902 60051 CABLE ASSEMBLY A16J1 A55J2 8
70. oeste Ds pic anre dota x MORD o od tetra e HP 3455A Overpower Protection Check 1 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument 2 Set the power supply to 20 Vdc Touch the 20V lead to the Modulation Analyzer s INPUT the minus side should be at ground The display should show Error 06 If faulty see Service Sheet 4 and check the Overpower Protection NOTE If step 2 is repeated it is necessary to first perform step 3 in order to discharge the input dc blocking capacitor Also disconnect the supply from the INPUT before setting the voltage to 20 Vdc 3 Set the supply to zero without turning it off and while still connected to the INPUT press CLEAR Error 06 should go away If it doesn t see Service Sheet 4 and check the Overpower Protection 72 RF Detector Check 1 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Connect the CALIBRATION RF POWER OUTPUT to A15J2 RF IN 2 Key in 45 16 SPCL to turn on the RF power calibrator Key in 35 0 SPCL to measure RF level with the RF peak level The display should read between 0 6 and 1 6 mW If faulty see Service Sheet 4 and check detector circuits 73 Local Oscillator Tuning Check 1 Key in 54 0 SPCL If the display shows other than 0 see Special Function 54 N paragraph 8 7 Service Sheet BD2 8D 21 Ser
71. 0 4222 AS3R22 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 4 1 8 0 5111 A53R23 0698 3150 6 RESISTOR 2 37K 1 125W TC 0 100 24546 4 118 70 2371 AS3R24 0811 3350 0 1 RESISTOR 10K 025 05W PWW TC 0 10 28460 0811 3350 AS3R25 0811 3349 7 1 RESISTOR 1K 025 05W PWW TC 0 10 28480 0811 3349 A53R26 0811 3348 6 RESISTOR 111 11 025 05W PWW TC 20 10 28480 0811 3348 A53R27 0757 0289 2 RESISTOR 13 3K 1 125W TC 0 4 100 19701 MF4C 1 6 T0 1332 F AS3R2B 0698 3450 9 RESISTOR 42 2K 1 125W TC 0 100 24546 4 1 8 0 4222 53 29 0598 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24545 4 1 8 0 2151 53830 0698 3150 6 RESISTOR 2 37K 1 125W TC 04 100 24546 4 1 8 0 2371 A53R31 0698 3450 9 RESISTOR 42 2K 1 125W TC 0 100 24546 C4 1 8 T0 4222 F A53R32 0757 0442 9 RESISTOR 10K 196 125W TC 0 100 24546 CA 1 8 TO 1002 F A53R33 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 A53R34 0698 3154 0 RESISTOR 4 22K 1 125W TC 0 100 24546 4 1 8 10 4221 A53R35 0757 0200 RESISTOR 5 62K 1 125W TC 0 100 24546 C4 1 8 T0 5621 F 53836 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 A53R37 0757 0465 6 RESISTOR 100K 1 125W TC O 100 24546 C4 1 8 T0 1003 F AS3R36 0757 0460 1 RESISTOR 61 9K 1 125W TC 0 100 24546 4 1 8 0 6192 AS3R39 0757 0279 0 RESISTOR 3 16K 1 125W 0 100 24546
72. 10 100VDC CER 28480 0169 4832 71 1 1901 0518 8 6 DIODE SM SIG SCHOTTKY 28480 1901 0518 A71CR2 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A71CR3 1901 0518 B DIOOE SM SIG SCHOTTKY 28480 1901 0518 A71CR4 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A71CR5 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 71 12 91350268 8 FILTER CERAMIC BANDPASS 455KHZ CENTER 28480 9135 0258 71 124 9135 0267 7 FILTER CERAMIC BANDPASS 455 CENTER 28480 91350267 A71J1 1250 1425 7 CONNECTOR RF SMC SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 10 32 THD 067 IN THK 28480 2950 0078 A71J2 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 10 32 THO 067 IN THK 28480 2950 0078 10 Section 7 far npelate information Eactosy selected Refer to se 7 Sob era panes dapes rev 16JUL90 6 157 Replaceable Parts Table 6 3 Replaceable Parts Model 8901B Reference HP Part Q Mfr 4 ty Description Mfr Part Number Designation Number D y Code A71L1 9100 1642 1 2 INDUCTOR RF CH MLD 270UH 5 20 45 6 28480 9100 1642 A71L2 9100 1642 1 INDUCTOR RF CH MLD 270UH 5 2DX 45LG 28480 9100 1642 A71MP1 08902 00034 3 1 BOARD COVER IF AMP DET 28480 08902 00034 A71Q1 1853 0459 3 7 TRANSISTOR PNP SI
73. 100 125W F TC 04 100 OSW F TC 0 100 RESISTOR 5 11K 1 125W TC 0 100 RESISTOR 5 11K 1 125W F TC 04 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ 50 OP GP 99 PKG OP GP 99 PKG OP AMP GP 99 PKG OP AMP LOW BIAS H IMPD TO 99 PKG IC FF CMOS POS EDGE TRIG DUAL COMPARATOR GP QUAD 146 DIP P PKG TTL LS 3 TO 8 LINE IC LCH TTL LS D TYPE 4 IC RCVR TTL LINE RCVR DUAL 2 INP DIODE ZNR 3 83V 5 DO 35 PD 4W DIODE 2NR 1N827 6 2V 5 DO 7 4W DIODE ZNR 5 62V 5 DO 35 PD aw DIODE ZNR 5 62V 5 DO 35 PD 4W i sf etopeanet Mfr Code 28489 19707 19701 24546 24546 24546 24546 24546 24546 24546 19701 28480 28480 28480 28480 24546 24546 25546 24546 19701 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 28480 28480 01295 01295 01295 27014 3L585 01295 01295 01295 01295 28480 24046 28480 28480 d aere gn Replaceable Parts Mfr Part Number 2100 3349 MF4C1 8 T9 4991 C 4 1 8 2 3091 C4 1 8 T0 4641 F C4 1 8 T0 1002 F 4 1 8 0 4641 C4 1 8 T0 1002 F C4 1 8 T0 9092 F C4 1 8 T0 511R F C3 1 8 TO 333R F MF4C1 8 T2 222R D 0698 5439 0698 3159 0698 5439 069
74. 100MHZ 04713 2N5551 20021 1254 0474 4 TRANSISTOR NPN SI 310MW FT 100MHZ 04713 2N5551 A20022 1854 0813 5 3 TRANSISTOR NPN 2N3501S SI TO 39 PD 1W 28480 1854 0813 20023 1853 0462 8 2 TRANSISTOR PNP 2 3635 39 PD 1W 28489 1853 0462 20024 1853 0594 7 TRANSISTOR DUAL PNP 2N3808 78 28480 18530594 20025 ASSIGNED 20026 1854 0813 5 3 TRANSISTOR NPN 2N3501S SI TO 39 PD 1W 28480 1854 0813 20027 1854 0474 4 TRANSISTOR NPN SI PO 310MW FT 100MHZ 04713 2 5551 20028 1854 0477 7 TRANSISTOR NPN 2N2222A SI 18 PD 500MW 04713 2N2222A cte bacteiy celected Component to cee trot A amp barato rev LOJULIO 6 97 O SS SSS SS Sees ee Replaceable Parts Model 8901B Table 6 3 Replaceable Parts to tection 6 95 tedected fot peeest p Refer section Gt Reference HP Part Q 3 Mfr ty Description Mfr Part Number Designation Number D y 3 Code A20 08901 60262 SERIAL PREFIX 2627A AND ABOVE A20R1 2100 3161 6 1 RESISTOR TRMR 20K 10 SIDE ADJ 17 TRN 02111 43P203 A20R2 0757 0463 4 1 RESISTOR 82 5K 1 125W TC 04 100 24546 4 1 8 0 8252 A20R3 0698 7284 5 2 RESISTOR 100K 1 OSW F TC 04 100 24546 C3 1 8 T0 1003 F 2084 0698 7284 5 RESISTOR 100K 1 OSW TC 04 106 24546 C3 1 8 T0 1003 F 20 5
75. 100VDC CER 284B0 0160 4832 A14C11 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A14C12 0160 4833 5 CAPACITOR FXD 022UF 10 100VDC CER 28480 0160 4833 14 13 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 14 0160 4832 4 CAPACITOR EXD 01UF 10 100VDC CER 28480 0160 4832 A14C15 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 16 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 17 0160 4814 2 CAPACITOR FXD 150 5 100VDC 28480 0160 4814 14 18 0160 4833 5 CAPACITOR FXD 022UF 10 100VDC CER 28480 0160 4833 14 1 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A14J1 1251 5649 7 1 CONNECTOR 20 PIN M POST TYPE 28480 1251 5649 1251 4460 8 2 CLIP CABLE PLUG RTNG DUAL INLINE 16 CONT 28480 1251 4460 A14MP1 4040 0749 4 EXTR PC BRN POLYC 062 BD THKNS 28480 4040 0749 1480 0073 6 PIN ROLL 062 IN DIA 25 IN LG BE CU 28480 1480 0073 2 4040 0752 9 1 EXTR PC YEL POLYC 062 BD THKNS 28480 4040 0752 1480 0073 6 PIN ROLL 0624N DIA 25 IN LG BE CU 28480 1480 0073 4 1 0698 3438 3 RESISTOR 147 1 125W 0 100 24546 C4 1 8 T0 147R F A14R2 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F 1483 1810 0206 8 NETWORK RES 8 SIP10 0K OHM X 7 01121 208A103 Al4R4 1810 0206 8 NETWORK RES 8 SIP10 0K OHM X 7 01121 208 103 2515 3005 1485 0757 0280 3 RESISTOR 1K 1 125W TC 0 100
76. 125W TC 04 100 24546 C4 1 8 TO 4640 F AAR25 0698 3155 1 RESISTOR 4 64K 196 125W TC 204 100 24546 C4 1 8 TO 4641 F A4R26 0698 3155 1 RESISTOR 4 84 1 125W TC 0 100 24546 C4 1 8 T0 464 1 F 27 0757 0280 3 RESISTOR 1K 1 125W 90 100 24546 CA4 1 8 TO 100 1 F AAR28 0757 0279 0 RESISTOR 3 16K 1 125W TC O 100 24546 4 1 8 70 3161 AAR29 0757 0280 3 RESISTOR 1 125W TC 04 100 24546 CA 1 8 T0 1001 F 4830 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 1 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 100 TF 4832 0698 3155 1 RESISTOR 4 64K 196 125W TC 0 100 24546 4 1 8 0 4641 A4SR33 0698 3155 1 RESISTOR 4 64K 1 125W TC 04 100 24546 C4 1 8 T0 A64 1 F AAR3A 0698 3155 1 RESISTOR 4 64 1 125W 0 100 24546 CA 1 8 T0 464 1 F 5 0757 0280 3 RESISTOR 1K 196 125W TC 2 0 100 24546 C4 1 8 T0 1001 F 4836 0698 3155 1 RESISTOR 4 64 1 125W 2 O 100 24546 4 1 8 10 4641 7 07570199 3 RESISTOR 21 5K 1 125W TC 0 100 24546 4 1 8 0 2152 AAR38 0698 0084 9 21 RESISTOR 2 15K 1 125W TC 0 100 24546 C4 1 8 T0 2151 F AAR39 0757 0468 6 RESISTOR 100K 1 125W 0 100 24546 C4 1 8 T0 1003 F AARAO 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F AARATI 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 ASRK2 0698 0082 7
77. 1458 CA307T DG201BK SN74LS175N SN74LS175N CA307T DG201BK SN74LS175N DAC 08EQ SN74LS259N 5 41 5138 LF256H SN75451BP SN75451BP SN74LS122N 1826 0471 1902 3002 1902 3002 1N827 1902 0947 1 827 Errata part change 01701 91 ___ ne rev 16JUL90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q T Mfr ty Description Mfr Part Number Designation Number D y Code 54 08901 50252 2 1 IF AMPLIFIER DETECTOR ASSEMBLY 28480 08901 60252 54 1 0180 0116 1 4 CAPACITOR FXD 6 8UF 10 5 56289 1500685 903582 5 2 0180 0197 8 1 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225X9020A2 54 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 150D685X9035B2 A54CA 0160 4832 4 14 CAPACITOR FXD 010 10 100VDC CER 28480 0150 4832 54 5 0160 4825 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 54 6 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 54 7 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 01604832 54 8 0160 4797 0 6 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 54 9 0160 4835 7 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4835 54 10 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 54 11 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 54 12 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A54C13 0160 4835 7 CAP
78. 15 28480 RESISTOR 4 8K 1 1W F TC 0 15 28480 RESISTOR 4 8K 1 1W TC 0 15 28480 RESISTOR 4 8K 199 1 TC 0 15 28480 RESISTOR 4 8K 1 1W TC 0 15 28480 RESISTOR 1 47K 1 125W F TC 0 100 24546 RESISTOR 26 1K 1 125W TC 0 100 24546 RESISTOR 4 8K 1 IW TC z 0 15 28480 Factory Selected Coniponent Refer to section 5 Model 8901B Mfr Part Number C4 1 8 T0 1002 F C4 1 8 T0 1003 F C4 1 8 T0 5111 F C4 1 8 TO 1002 F C4 1 8 TO 5111 F CB2265 C4 1 8 T0 3161 F 4 1 8 0 5111 4 1 8 0 1002 C3 1 8 T0 1001 F 2100 3273 4 1 8 0 1472 4 1 8 9 1602 4 1 8 2502 C3 1 8 TO 1472 F MF4C 1 8 T9 1252 B MFAC 1 8 T9 6251 B 0699 0069 0698 8642 0698 8731 0698 6614 C4 1 8 TO 7401 F MF4C 1 8 T9 6251 B 0698 8731 C3 1 8 T0 4221 F C3 1 8 TO 316R F 4 1 8 0 1962 0698 8731 0698 8731 0698 8731 0698 8731 0698 8731 C4 1 8 T0 1471 F 4 1 8 0 2612 0698 8731 poet change rev 16JULIO EE eee eee 7a Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Q ii Mfr ty Description 5 Mfr Part Number Designation Number D p Code 51 0698 6414 1 RESISTOR 1K 1 IWF TC 0 5 28480 0698 6414 52 9757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 100 1 F 6 0757 1094 9 RESISTOR 1 47K 1 125W TC 0 100 24546 4 1 8 10 1471 A3R54 069B 3444 1 RESISTOR 316 1
79. 2 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 5511 91400137 1 INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 28480 9140 0137 5512 8140 0137 1 INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 28480 9140 0137 ASSL3 9140 0137 1 INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 28480 9140 0137 tiefer to Section T hor gapdate Selected s onapeneut mec tic 75 rata parti change rev 16JUL90 6 153 ro 7 6 154 ot update ipfessisation elected otnponent Meter to section Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Qt D Mfr escription Mfr Part Number Designation Number D y Code A55MP1 08901 00150 3 1 BOARD COVER iF CHAN FLTR 28480 08901 00150 AS55P 1 54 NOT ASSIGNED 55 55 1251 4700 9 1 CONNECTOR 3 PIN POST TYPE 28480 1251 4700 A55Q1 1855 0421 3 1 TRANSISTOR J FET 2N5114 P CHAN D MODE 17856 2N5114 5502 1855 0420 2 TRANSISTOR J FET 2N4391 D MODE 01295 2N439 1 55 1854 0668 8 2 TRANSISTOR NPN SI TO 18 PD 500MW 28480 1854 0668 5504 1854 0668 TRANSISTOR NPN SI TO 18 PD SOOMW 28480 1854 0668 5505 1853 0430 0 1 TRANSISTOR PNP 2 4959 SI 72 200MW 04713 2N4959 5506 1854 0345 8 1 TRANSISTOR NPN 235179 SI TO
80. 20 59 A20R60 A20R61 A20R60 R69 A20R70 A20R71 A20R72 A20R73 A20R74 A20R75 A20R76 A20R77 A20R78 A20R79 A20R80 A20R81 A20R82 2 1 A20TP2 A20TP3 A20TP4 A20U1 A20U2 A20U3 2004 2005 te sect 7 rev 16JUL90 HP Part Number 0757 0289 1810 0206 0698 0085 0757 0123 0698 7248 0698 7260 0698 3152 0698 7276 0698 3159 07570123 0698 7261 0698 7258 0698 7236 0698 3162 0757 0199 0698 7236 0698 7259 0698 7236 0698 7236 0698 3439 0698 7236 0698 0082 0698 3154 0698 7236 0698 7236 0698 7286 0699 0069 0698 7248 1251 0600 1251 0600 1251 0600 1251 0600 1826 0989 1826 0605 1820 1198 1826 0990 1826 0716 D ON Q mH ao ONNAN amp Qty D ferro npdateo Table 6 3 Replaceable Parts Description RESISTOR 13 3K 1 125W F TC 0 100 NETWORK RES 8 SIP10 0K OHM X 7 NOT ASSIGNED NOT ASSIGNED RESISTOR 2 61K 1 125W F TC O 100 NOT ASSIGNED RESISTOR 34 8K 196 125W TC 0 100 RESISTOR 3 16K 196 05W TC 0 100 RESISTOR 10K 1 05W TC 04 100 RESISTOR 3 48K 1 125W TC 0 100 RESISTOR 46 4K 1 05W TC 0 100 RESISTOR 26 1K 196 125W TC 0 100 RESISTOR 34 8K 1 125W TC 0 100 NOT ASSIGNED NOT ASSIGNED RESISTOR 11K 1 OSW F TC 20 100 RESISTOR 8 25K 1 05W TC 0 100 NOT ASSIGN
81. 24546 24546 24546 24556 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 17856 01295 01295 01295 27014 s 4 1 8 0 1003 C4 1 8 T0 1003 F 1 8 1211 4 1 8 1211 C4 1 8 T0 90R9 F C4 1 8 T0 287R F 4 1 8 1211 C 4 1 8 TO 162R F C4 1 8 T0 287R F 4 1 48 1211 C4 1 8 T0 162R F 4 1 8 0 4640 4 1 8 0 2878 C4 1 8 T0 287R F 4 1 8 0 1471 C4 1 8 T0 287R F 4 1 8 70 1471 C4 1 8 T0 215R F C4 1 8 T0 215R F 0699 0678 0699 0681 4 1 8 1211 C4 1 8 T0 215R F 4 1 8 0 2151 4 1 8 10 4640 4 1 8 1211 C4 1 8 T0 215R F 4 1 8 0 2151 4 1 8 0 2151 4 1 8 1211 C4 1 8 T0 287R F C4 1 8 T0 287R F C4 1 8 T0 287R F C4 1 8 T0 90R9 F C4 1 8 T0 90R9 F C4 1 8 T0 1001 F 4 1 8 0 1001 4 1 8 0 2151 C4 1 8 T0 2151 F C4 1 8 T0 215R F 08901 80070 DG200BA SN75451BP SN74LS138N 5 7415175 LM307J banat 6 163 Model 8901B Reference Designation 2305 2340 2348A AND ABOVE B1 C10 F1 F1 J2 J3 7 16 90 Number 08901 60094 86701 00017 1520 0067 0400 0009 1251 3201 1251 4283 08901 60306 0624 0216 3160 0300 86701 00017 1520 0067 08903 60307 0400 0009 1251 3201 1251 3897 1520 0067 86701 00017 0
82. 2680 0131 2 2680 0132 3 2740 0002 4 3050 0006 6 3050 0226 2 1400 0249 0 for nqulaie Qty h NANNAN Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS REAR FRAME VOLTAGE INFORMATION LABEL NOT ASSIGNED COVER AUDIO SECTION FULL BLANK NOT ASSIGNED TORX BIT T 10 CLAMP CABLE 15 DIA 62 WD NYL NOT ASSIGNED SWITCH MOUNTING PLATE SPACER BETWEEN T1 AND MP 16 BD RETAINING BRACKET FOR RETAINING A13 AND A14 SPACER 125L 1811D SCREW MACHINE 6 32 312PNPD LOCK WASHER 1411D SWITCH RKR BASIC DPDT 3A 250VAC SLDR LUG ROCKER SCREW MACH 4 40 188 IN LG UNCT 82 DEG SWITCH RKR PRI SW SPDT 5A 120 TRANSFORMER POWER 100 120 220 240V TRANSFORMER COVER BRACKET WASHER LK HLCL NO 10 194 IN ID SCREW MACH 10 32 2 25 IN LG PAN HD POZI SCREW MACH 10 32 2 5 IN LG 2 NUT HEX DBL CHAM 10 32 THD 125 IN THK WASHER SHLDR NO 10 2 IN ID 5 IN OD WASHER FL MTLC NO 10 203 IN ID CABLE 062 625 DIA 093 WD NYL NOT ASSIGNED Eactery elected Compenent ikele bo Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 60000 02392 28480 28480 28480 28480 00000 00000 00000 28480 28480 06383 Model 8901B Mfr Part Number 5020 8806 188695 08901 00157 8710 1637 1400 0510 08902 00024 08901 00214 08901 00211 0380 0003 2360 0115 2190
83. 28 CONT DIP SLDR 28480 1200 0553 A13U6 1820 2027 6 1 IC STATIC MEMORY INTERFACE 28480 1820 2027 1200 0552 4 2 SOCKET IC 40 CONT DIP SLDR 28480 1200 0552 A13U9 1820 1928 4 1 IC F8 MPU CLK FREQ 2 MHZ 28480 1820 1928 1200 0552 4 SOCKET IC 40 CONT DIP SLDR 28480 1200 0552 2314A TO 2333A 13010 98901 80062 4 4 ROM 1 28480 08901 60062 2334 TO 2428 13010 08901 80066 8 1 ROM 1 28480 08901 80066 2432 2650 13010 08901 80071 5 1 1 28480 08901 80071 2651A ONLY 4131010 08901 80081 7 1 ROM 1 28480 08901 80081 2608A TO 2642A 13010 08901 80087 3 1 ROM 1 28480 08901 80087 2644 2702A 13010 08901 80090 8 1 ROM 1 28480 08901 80090 2718 ONLY 13010 08901 80105 6 1 ROM 1 28480 08901 80105 1200 0553 5 SOCKET IC 28 CONT DIP SLDR 28480 1200 0553 A13U11 1820 1216 3 IC DCDR TTL LS 3 TO 8 LINE 3 INP 01295 SN74LS138N 13012 1820 1917 1 1 TTL LS LINE DRVR OCTL 01295 SN74LS240N A13U13 1820 1287 8 1 IC BFR TTL LS NAND QUAD 2 INP 01295 SN74LS37N A13U14 NOT ASSIGNED A13U15 NOT ASSIGNED A13VR1 1902 0777 3 1 DIODE ZNR 1N825 6 2V 5 DO 7 PD 4W 04713 1 825 13 1 8159 0005 0 8 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0095 A13W2 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 1 re T Ge qulotteatien kactoty Selected Component Refer section 51 part change 6 52 rev 16JUL90 Model 8901B Replaceable Parts Table 6 3 Re
84. 28480 08902 60051 OPTION 030 ONLY W311 NOT ASSIGNED W32 08901 60078 COAX CABLE ASSY 7 28280 08901 60078 A17J3 A19J3 EXCEPT OPTION 003 08901 60168 COAX CABLE ASSY 927 28480 08901 60168 A17J3 REAR LO INPUT OPTION 003 ONLY 2314 TO 2636 W33 08901 60168 CABLE ASSEMBLY A17J3 2 PORT 2 927 28480 08901 60168 OPTION 030 ONLY 2642A AND ABOVE W33 08902 60019 CABLE ASSEMLBY A17J3 TO S2 PORT 2 927 28480 08902 60019 OPTION 030 ONLY W34 08901 60167 COAX CABLE ASSY 90 28480 08901 60167 A19J3 REAR LO OUTPUT OPT 003 ONLY 2314A TO 2636A W34 08901 60167 CABLE ASSEMLBY A19J3 TO S2 PORT 1 90 28480 08901 60167 OPTION 030 ONLY 2642A AND ABOVE W34 08902 60133 CABLE ASSEMLBY A19J3 TO S2 PORT 1 156 28480 08902 60133 OPTION 030 ONLY Was 08901 20083 SEMI RIGID COAX CABLE ASSY 28480 08901 20083 003 ONLY W236 08901 60057 COAX CABLE ASSY 91 28480 08901 60057 A21J2 A23J1 W37 08901 60061 COAX CABLE ASSY 934 28480 08901 60061 A17J2 A15J2 W38 08901 60063 COAX CABLE ASSY 916 28480 08901 60063 2127 2211 Wag 08901 60058 COAX CABLE ASSY 93 28489 08901 60058 A23J2 24 2 Wao 08901 60060 COAX CABLE ASSY 905 28480 08901 50060 Sy Eriata gerd Barge rev 16 UL90 1L Lii JA J s GCQD Model 8901B Reference Designation W41 W42 waa Waas Was 2314A TO 2608A W46 2619A AND ABOVE W46 47 Wag W49 w50 W5
85. 33 and check the circuits of channel 1 4 Set the oscilloscope gain for a display of 6 divisions peak to peak Key in 0 2D1 SPCL to switch out the Channel Output Attenuator Decrease the oscilloscope s vertical gain by a factor of 10 The waveform should be between 5 9 and 6 1 divisions peak to peak If faulty see Service Sheet 6 and check the Channel Output Attenuator 5 Increase the signal source frequency until the waveform drops to 3 divisions peak to peak Record the signal source s frequency 6 Decrease the signal source frequency until the waveform rises to 6 divisions peak to peak then drops to 3 divisions peak to peak Note the signal source s frequency The difference between this frequency and the frequency in step 5 should be as indicated in Table 8D 9 The filter bandwidth depends on the option installed If faulty see Service Sheet 6 and check the First Channel 1 Filter Table 8D 9 Bandwidth of First Channel 1 Filter V7 Step 6 cy Difference Limits Option Combination p imits kHz 032 and 035 25 0 35 0 033 and 035 035 and 037 032 and 033 033 and 037 032 and 037 7 Key in 0 2D3 SPCL to select channel 2 Set the signal source frequency to 455 kHz then fine tune the source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between
86. 50VDC CER 28480 0160 4835 A71C10 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 71 11 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A71C12 0160 4835 7 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4835 A71C13 0160 A835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 71 14 0160 4832 4 CAPACITOR FXD O1UF 10 100VDC CER 28480 0160 3832 71 15 0160 4797 0 CAPACITOR FXD 3 3PF 25 100VDC 28480 0160 4797 71 16 0160 4835 7 CAPACITOR FXD 10 SOVDC CER 28480 0160 4835 A71C17 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A71C18 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 71 19 0160 4832 4 CAPACITOR FXD 10 100VDC CER 28480 0160 4832 A71C20 0160 4797 0 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 A71C21 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A71C22 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC 28480 0160 4835 A71C23 01604832 4 CAPACITOR FXD OTUF 10 100VDC CER 28480 0160 4832 71 24 0160 4832 4 CAPACITOR FXD C1UF 10 100VDC CER 28480 0160 4832 71 25 0160 4789 0 1 CAPACITOR FXD 15PF 5 100VDC CER 0 30 28480 0160 4729 71 26 0160 4835 7 CAPACITOR FXD 1UF 109 50VDC CER 28480 0160 4835 A71C27 0160 4835 r4 CAPACITOR FXD JUF 10 SOVDC 28480 0160 4835 A71C28 0160 5550 5 1 CAPACITOR FXD 1UF 5 100VDC MET POLYC 28480 0160 5550 A71C29 0160 4832 4 CAPACITOR FXD OQ1UF
87. 6010 6011 6012 A6Q13 A6Q14 A6Q15 A6Q16 fefe rev 16JUL90 HP Part Qty Number D y 1801 0518 8 1901 0539 3 1250 1220 0 2190 0124 4 2950 0078 9 1250 1220 0 2190 0124 4 2950 0078 9 1250 1220 0 2190 0124 4 2950 0078 9 1250 1220 0 2190 0124 4 2950 0078 9 91400210 1 9140 0210 1 9140 0271 4 1 9140 0272 5 1 9140 0273 6 1 9100 1652 3 1 9140 0274 7 1 9100 1666 9 1 9140 0131 5 4 08901 00109 2 1 2190 0008 3 2360 0113 2 1853 0007 7 1858 0010 2 1 1853 0007 7 1854 0404 0 13 1855 0420 2 5 1855 0265 3 1855 0421 3 1 1854 0404 0 1854 0404 0 1853 0281 9 13 1853 0007 7 1854 0215 3 1 1853 0007 7 1854 0637 1 1854 0404 0 1854 0404 0 pela Le Table 6 3 Replaceable Parts Description Mtr P Code DIODE SM SIG SCHOTTKY 28480 DIODE SM SIG SCHOTTKY 28480 CONNECTOR RF SMC M PC 50 OHM 28480 WASHER LK INTL T NO 10 195JN ID 28480 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 CONNECTOR RF SMC M PC 50 OHM 28480 WASHER LK INTL T NO 10 1954N ID 28480 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 CONNECTOR RF SMC M PC 50 OHM 28480 WASHER LK INTL T NO 10 195 IN ID 28480 NUT HEX DBL CHAM 10 32 THD 067 4N THK 28480 CONNECTOR RF SMC M PC 50 OHM 28480 WASHER LK INTL NO 10 195 IN ID 28480 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 INDUCTOR RF CH MLD 100UH 5 166DX 385LG 28480 INDUCTOR RF CH MLD 100UH 5 166DX 385LG 28480 INDUCTOR RF CH MLD 13 3UH 2 28480 INDUCT
88. 95867869 EE 22 23 53 89 62 33 54 35 Figure 80 8 Key Codes for Key Scan Keyboard Interrupt Check 1 Connect high impedance dc coupled oscilloscope to 1 INT The voltage should read TTL high Pressing any key should result in a TTL low which should remain low for 40 to 60 ms after the key is released If faulty see Service Sheet 25 and check the Keystroke Detector Front Panel LED Check 1 Perform the Front Panel LED Check on Service Sheets 26 and 27 HP IB Check 1 See Service Sheet 28 Nonvolatile Memory Backup Check 1 Measure A13TP13 BATT with a dc voltmeter The voltages should be between 2 7 and 2 9 Vdc Repeat the measurement with POWER set to STBY The voltage should not change If faulty see Service Sheet 24 and check the Nonvolatile Memory Supply Hint The switching point between the normal and backup memory is adjustable See Adjustment 22 Battery Backup in Section 5 Service Sheet BD5 8D 59 Service Model 8901B 71 Power Supply Check 1 Check test points AIOTP2 through TP7 with a dc voltmeter The voltages should be within the limits shown on Block Diagram 5 If a short on the supply is suspected continue with step 2 If a regulator is suspected see Service Sheets 31 and 32 NOTE The supplies are interdependent Often a short on one supply will shut down another All supplies are dependent on the 15V Supply The switched 15V Su
89. OW ANN OO DOW Oo lt U ooo o wo Qty AN Hefe 7 update information rev 16JUL90 Table 6 3 Replaceable Parts iet Mfr Description Code RESISTOR 1K 1 125W TC 04 100 24546 RESISTOR 1K 1 125W F TC 0 100 24546 RESISTOR 1K 1 125W TC 0 100 24546 RESISTOR 3 83K 1 125W TC 0 100 24546 RESISTOR 5 11K 1 125W TC 0 100 24546 RESISTOR 511 1 125W TC 2 0 100 24546 RESISTOR 511 1 125W TC 0 100 24546 RESISTOR 75 1 125W TC 0 100 24546 RESISTOR 1K 1 125W TC 0 100 24546 RESISTOR 68 1 1 125W 0 4 100 24546 RESISTOR 5 11 1 125W F TC 0 100 24546 RESISTOR 19 6 1 125W TC 0 100 03888 RESISTOR 348 1 125W TC 0 100 24546 RESISTOR 348 1 125W TC 0 100 24546 RESISTOR 1 1K 1 125W TC 0 100 24546 RESISTOR 51 1 1 SW TC 0 100 28480 RESISTOR 5 11K 1 125W 04 100 24546 RESISTOR 26 1 1 125W TC 20 100 03888 RESISTOR 100 1 125W TC 0 100 24546 RESISTOR 100 1 125W TC 0 100 24546 RESISTOR 1 125W TC 2 04 100 24546 NETWORK RES 8 SIP10 0K OHM X 7 01121 RESISTOR 100K 1 125W TC 0 100 24546 RESISTOR 1 125W TC 0 100 24546 CONNECTOR SGL CONT 1 14 MM 8SC SZ 50 28480 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ SQ
90. TC 0 100 RESISTOR 5 11K 1 125W 0 100 RESISTOR 4 64K 1 125W TC 04 100 RESISTOR 1 78 196 125W TC 204 100 RESISTOR 3 83K 1 125W F TC 0 100 RESISTOR 34 8 1 125W TC 0 100 RESISTOR 619 1 125W 0 100 RESISTOR 511 1 125W TC m 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 147 1 125W TC 0 100 RESISTOR 5 11 1 125W TC 04 100 RESISTOR 1 96K 1 125W TC 04 100 RESISTOR 1K 1 25W TC 0 100 RESISTOR 19 6 1 125W TC 0 100 RESISTOR 383 1 125W TC 0 4 100 RESISTOR 383 1 125W TC 04 100 RESISTOR 348 1 125W TC 0 100 RESISTOR TRMR 50 10 C SIDE ADJ 1 TRN RESISTOR 2 37K 1 125W F TC 04 100 RESISTOR 316 1 125W TC 0 100 RESISTOR 196 1 125W F 0 100 RESISTOR TRMR 200 10 C SIDE ADJ 1 TRN RESISTOR 383 1 125W TC 0 100 RESISTOR 110 1 125W TC 0 100 RESISTOR 56 2 1 125W TC 0 100 RESISTOR 110 1 125W 0 100 RESISTOR 2 87 1 125W TC 0 100 RESISTOR 422 1 125W TC 0 100 RESISTOR 100 1 125W F 0 100 RESISTOR 909 1 125W F TC 0 100 RESISTOR 23 7 1 125W 0 100 RESISTOR 100 1 125W 0 100 Vactoty selected Component Refer Section 7 Mfr Code 28480 28480 28480 04713 04713 04713 28480 03888 03888 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 03888 24
91. The Controller disables the Counter and transfers the accumulated count to the Controller The Audio Counter also makes use of the Stop Count line to control the counting of the Selected Time Base Reference during the count sequence See the discussion of the Audio Counter in Block Diagram BD4 The Selected Time Base Reference is either the standard 10 MHz Reference Oscillator the Option 002 10 MHz High Stability Crystal Oscillator or an external input from the rear panel TIME BASE 10 MHz INPUT connector For Option 002 the crystal from the 10 MHz Reference Oscillator is removed and the oscillator s circuitry is driven by the High Stability Crystal Oscillator In either case when Service Sheet BD5 80 47 Service Model 8901B an external reference is applied a detector senses the signal and throws the Time Base Select Switch to the external position This switching is done in such a way as to minimize the interruption of the reference since after it is divided by five it is also the Controller clock The Time Base Dividers divide the 10 MHz reference by 1600 During a frequency count Controller synchronizes itself to the 6 25 kHz Time Base signal via the Counter Output and Time Base Gate Since the Controller controls the enable period of the Counter via the Counter Gate Control the Time Base signal ultimately determines the Counter accuracy The Counter is enabled for more than one period of the 6 25 kHz Time Base signal
92. UNGAR PL 111 72 SOLOER TIP MODIFIED AS TOO COLD FRONT SIDE OF CIRCUIT BOARD CORRECT TEMPERATURE 1 SUPPORT ANVIL Figure 8 2 Typical Assembly for Heat Staking Operation 6 To assure proper switch assembly verify that the switch is pushed firmly against the circuit board and with the hot 440 C or 825 F staking tip push down on each of the posts 2 of the switch Each post should take about one second to stake With the proper cycle the post should turn a darker color and in about ten seconds return to its original bright red color The correctly staked post should have a smooth round rivet like top CAUTION Do not disturb the assembly for at least 10 seconds after heat staking If not enough heat is applied the plastic will tend to stick to the tip of the iron If too much heat ts applied the plastic will fume profusely the rivet will be irregularly shaped and the plastic will be permanently discolored If the staking tool is worn or flaked it will cause a misshaped rivet and or a contamination deposit on the surface 8 4 Disassembly Procedures Service Model 8901B td 6M O d ar 995 Figure 8 3 Illustrated Parts Breakdown of the Front Panel 8C 5 Disassembly Procedures L R Service 8C 6 Model 8901B Table 8 1 Item Number Reference Designator Description Number Reference Designator
93. frequency control ete aes automatic gain control doas Gates aluminum BEG automatic level control AM amplitude modulation 1 amplifier APC automatic phase control assembly AUX 252222525555 auxiliary ONG ec aie Baie me qus average AWG American wire gauge BAL balance binary coded decimal a board BECU beryllium copper beat frequency oscillator binder head BKDN breakdown bandpass bandpass filter BRS brass backware wave oscillator DAL 5 xs calibrate counter clockwise ceramic CHAN channel Gn oou centimeter CMO cabinet mount only COAX coaxial Table 6 1 Reference Designations REFERENCE DESIGNATIONS miscellaneous electrical part electrical connector stationary portion coil inductor miscellaneous mechanical part electrical connector movable portion transistor SCR triode thyristor FET thermistor transformer terminal board thermocouple test point Table 6 2 Abbreviations 1 of 2 ABBREVIATIONS COEF uae coefficient EDP 22220 electronic data COM ivo common processing COMP composition ELECT electrolytic COMPL compl
94. such as screws are listed under the part which they attach For example the screws that attach the fan B1 to the rear panel are listed under B1 6 5 RECOMMENDED SPARES LIST Stocking spare parts for an instrument is often done to ensure quick return to service after a malfunction occurs Hewlett Packard has prepared a Recommended Spares list for this instrument The contents of the list are based on failure reports and repair data Quantities given are for one year of parts support You can request a complimentary copy of the Recommended Spares list from your nearest Hewlett Packard office When stocking parts to support more than one instrument or to support a variety of Hewlett Packard instruments it may be more economical to work from one consolidated list rather than simply adding together stocking quantities from the individual instrument lists Hewlett Packard will prepare consolidated Recommended Spares lists for any number or combination of instruments Contact your nearest Hewlett Packard office for details Model 8901B assembly attenuator isolator termination fan motor capacitor coupler diode diode thyristor varactor directional coupler delay line annunciator signaling device audible or visual lamp LED Posset dias ampere BC alternating current ACCESS accessory ADJ oii EVE adjustment A D analog to digital AF audio frequency AFG automatic
95. which counts the output carries from Stage 4 via the Counter Output and Time Base Gate t the end of a count sequence the Time Base disables the Counter via the Counter Gate Control The Counter Transfer Logic then transfers the count of the individual stages in parallel to the Controller A13 via the Counter Output and Time Base Gate First the output from Stage 4 is transferred Then the output from Stage 3 is loaded into Stage 4 and the output from Stage 4 is again transferred The transfer process is again repeated with Stage 2 loading into Stage 4 via Stage 3 and transferring Finally Stage 1 is loaded into Stage 4 via Stages 2 and 3 and transferred The output from Stage 1 is used only when counting the LO frequency To make a voltage measurement the Voltage to Time Converter in the A5 Voltmeter Assembly of Service Sheet BD4 generates a pulse whose time interval is proportional to its dc input voltage During this time interval the Counter counts the Selected 10 MHz Time Base Reference via the VOLTMETER AUDIO line The count thus accumulated is proportional to the input voltage The count is initiated when the Counter Gate Control enables the Input Selector and the Voltage to Time Converter via the Ramp Gate The Voltage to Time Converter then closes the Voltmeter Audio Gate via the Stop Count line and the Selected Time Base Reference passes into Counter Stage 2 When the time interval ends the Voltmeter Audio Gate is opened
96. 0 0199800 0 0200200 250 000 249 997 250 003 Service Sheet BD4 8D 45 Model 8901B Service Service Sheet BD5 BLOCKS e Digital e Power Supply PRINCIPLES OF OPERATION General The Digital and Power Supply Block Diagram documents the Controller Counter Keyboard and Display Remote Interface HP IB and the Power Supply Counter Assembly A11 The Counter consists of a 10 MHz Reference Oscillator Time Base Dividers Input Selector four counter stages and counter control circuits The input to Stages 2 through 4 is selected by the Input Selector switch When the LO frequency is counted counter Stage 1 is enabled and fed into Stage 2 The input to Stage 1 is the High Frequency VCO signal divided by eight HF VCO 8 When the Voltmeter or Audio Counter input is selected the Selected 10 MHz Time Base Reference from the Time Base Select Switch gated by the Voltmeter Audio Gate the VOLTMETER AUDIO line is the input to Stage 2 Other signals which can be counted are the IF the 10 1 MHz VCO of the FM Calibrator the CALIBRATED FM 2 line three 10 MHz Time Base References Internal External or Selected Counting of the Internal and External Time Base Reference is useful as a Counter self check Special Function 46 controls the Input Selector The Counter counts in binary Stage 1 is a divide by eight and Stages 2 through 4 are divide by sixteens Additional stages of counting are contained in the Microprocessor in 13
97. 0006 3101 2080 5041 1418 ORDER BY DESCRIPTION 11 J50 ZOE WHITE 9100 4255 7100 1283 08901 00140 2190 0034 ORDER BY DESCRIPTION ORDER BY DESCRIPTION ORDER BY DESCRIPTION 3050 0006 3050 0226 PLTIM 8 A aat parit cdeiange rev 16 1 71 90 te rev 16 10190 eclVion updotre 52 1 A25J1 tbaetety ceded ted ibele 0 mes Dhen 1 Model 8901 Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part M Mfr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS we 08901 60049 COAX CABLE ASSY 1 28480 08901 60049 A52J2 MODULATION OUT AUDIO IN EXCEPT OPT 001 W10 08901 60177 COAX CABLE ASSY 9 28480 08901 60177 CALIBRATION OUTPUT AM FM EXCEPT OPTION 001 Wait 08901 60178 COAX CABLE ASSY 98 28480 08901 60178 CALIBRATION OUTPUT RF POWER ALL INSTRUMENTS INCL OPT 001 W12 08901 60166 COAX CABLE ASSY 9 28480 08901 60166 CALIBRATION OUTPUT AM FM OPTION 001 ONLY W13 08901 60225 WIRING HARNESS 28480 08901 60225 A1J1 A26J1 W14 08901 60175 RIBBON CABLE ASSY 28480 08901 60175 A1J2 A2733 wis 08901 60118 COAX CABLE ASSY 0 28480 08901 60172 A15J1 INPUT ALL INSTRUMENTS INCL OPT 001 W16 08901 60053 COAX CABLE ASSY 935 28480 08901 60053 2 1 6 W17 08901 60056 COAX CABLE ASSY 947 28480 08201 60056 A2J2 A amp J3 W18 08901 60154 COAX CABLE ASSY 3 28480 08901 60154 A11J1 A19J1
98. 0160 0576 0160 3674 150D156X9020B2 0160 5036 0160 5036 0160 0576 0160 0576 0160 5036 0160 3879 0160 4801 0160 4832 0160 4832 0160 4832 Prista ptt echange 6 141 Replaceable Parts Reference HP Part Designation Number 52 46 0160 4832 52 47 0160 4787 52 1 1901 1098 AS2CR2 1901 1098 A52CR3 AS2CRA 1901 1098 52 5 1901 1098 52 6 1901 1098 A52CR7 1901 7098 AS2CRB8 1901 1098 A52J1 1250 1425 52 2 1250 1425 5211 9100 3562 5212 9140 0210 5213 9140 0210 AS2MP 08901 00074 2360 0113 2190 0008 5291 0698 8822 5282 06988822 AS2R3 0699 0790 A52R4 07570280 5295 0757 0280 A52R6 0699 0790 AS2R7 1810 0206 5288 0757 0280 5289 0699 0778 AS2R10 0699 0785 AS2R11 0699 0780 A52R12 0699 0777 A52R13 0699 0789 A52R14 07570280 A52R15 AS2R16 0757 0458 52 17 0699 0782 A52R18 0699 0780 AS2R19 AS2R20 0699 0784 AS2R21 A52R22 0699 0776 52 23 0699 0780 A52R24 0599 0788 AS2R25 0699 0787 A52R26 0699 0786 A52R27 0757 0279 A52A28 0699 0791 52 29 0699 0057 AS2R30 0698 6414 6 142 7 1 Q amp oO C O On gt oh Qty garde daca Table 6 3 Replaceable Parts Description CAPACITOR FXD O1UF 10 100VDC CER CAPACITOR FXD 22PF 5 100VDC CER 0 30 DIODE SWIT CHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS NOT ASSIGNED DIODE SWITCHING 1N4150 5
99. 0160 4084 8 CAPACITOR FXD 1UF 20 5 CER 28480 0160 4084 A19C22 0160 4084 8 CAPACITOR FXD 1UF 20 50 0 CER 28480 0150 4084 19 23 0160 4084 8 CAPACITOR FXD 1UF 20 5 CER 28480 0160 4084 A19C24 0160 4084 CAPACITOR FXD 1UF 2046 5 CER 28480 0160 4084 A19C25 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A19C26 0160 4084 e CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A19C27 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 19 28 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC 28480 0160 0572 A19C29 0160 0690 4 2 CAPACITOR FXD 1 5 100VDC 28480 0160 0690 19 30 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A19C31 0160 0572 1 CAPACITOR FXD 2200 20 100VDC CER 28480 0160 0572 19 22 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 toa ree diet der iuforimaiienr Rise tag celocried Cage nent Friars ee es ee Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Qt Designation 5 Mfr Number D Mfr Part Number Description Code A19 08901 60024 08901 60274 SERIAL PREFIX 2314A TO 2806A 19 33 0160 3877 5 CAPACITOR FXD 100 20 200VDC CER 28480 0160 3877 A19C34 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 19 35 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 A
100. 0173 1205 0361 3 2 HEAT SINK SGL TO 5 TO 39 CS 13103 2226C 4029 1854 0071 7 TRANSISTOR NPN SI PD 300MW FT 200MHZ 28480 1854 0071 4030 1858 0032 8 TRANSISTOR ARRAY 14 PLSTC DIP 31585 CA3146E 4031 1854 0071 TRANSISTOR NPN SI 300MW 200MHZ 28480 1854 0071 A4Q32 1853 0020 4 TRANSISTOR PNP SI PD 300MW FT 150MHZ 28480 1853 0020 A4Q33 1854 0637 1 TRANSISTOR NPN 2N2219A SI TO 5 PD 8OOMW 01295 2N2219A 1200 0173 INSULATOR XSTR DAP GL 28480 1200 0173 1205 0361 3 HEAT SINK SGL TO 5 TO 39 CS 13103 2226C 4834 18540071 7 TRANSISTOR NPN SI PD 300MW 200MHZ 28480 1854 0071 4035 7855 0020 8 TRANSISTOR J FET N CHAN D MODE TO 18 SI 28480 1855 0020 A4R1 0757 0401 0 RESISTOR 100 1 125W F TC 0 100 24546 4 1 8 70 101 AAR2 0698 3430 5 RESISTOR 21 5 1 125W F TC 0 100 03888 PME55 1 8 T0 21R5 F AA4R3 0698 3155 1 22 RESISTOR 4 64K 1 125W TC 0 100 24546 C4 1 8 TO 46A1 F AARA 0757 0279 0 RESISTOR 3 16K 1 125W TC 0 100 26546 4 1 8 0 3161 AA4RS5 0787 0279 0 RESISTOR 3 16K 1 125W TC 0 100 24 546 C4 1 8 T0 3161 F A4R6 0757 1094 9 RESISTOR 1 47 1 125W TC 0 100 24546 C4 1 8 T0 1471 F AAR7 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F AARB 0698 3155 1 RESISTOR 4 64K 1 125W 0 100 24546 C4 1 8 T0 464 1 F A4R9 0757 0280 3 RESISTOR 1K 1 125W TC 20 100 24546 C4 1 8 TO 100 1 F A4R10 0757 0280 3 RESISTOR 1K 1 125W
101. 0486 ORDER BY DESCRIPTION 5001 5501 2N5878 0340 0486 ORDER BY DESCRIPTION 5001 5501 08901 60233 past change 6 123 Model 8901B Reference Designation A30 A30 A30C1 1 EEeta ge cection 7 rcv 16 JUL90 4 Part Number D Qty 0960 0443 1 1 0160 4065 5 es n pslate terealaerti Table 6 3 Replaceable Parts Description LINE MODULE FILTERED CAPACITOR FXD 1UF 20 250VAC RMS LINE VOLTAGE SELECTOR CARD P O A30 NOT SEPARATELY REPLACEABLE Mfr Code 28480 28480 telka tent i otupoonens Section Ge Replaceable Parts Mfr Part Number 0960 0443 0160 4065 Model 8901B Reference Designation A31 A31 A31J1 A31J2 A31MP1 2 rev 16JUL90 HP Part C Qty Number D 08901 60242 0 1251 3283 1251 5240 gt 0380 0644 2190 0034 1530 1098 2190 0019 2200 0109 2260 0002 fer MN Om Table 6 3 Replaceable Parts Description REMOTE INTERFACE CONNECTOR ASSEMBLY CONNECTOR 24 PIN F MICRORIBBON CONNECT OR 20 M POST TYPE STANDOFF HEX 327 IN LG 6 32THD WASHER LX HLCL NO 10 1944N ID CLEVIS 0 070 IN W SLT 0 4544 CTR WASHER LK HLCL NO 4 115 IN ID SCREW MACH 4 40 438 IN LG PAN HO POZ I NUT HEX DBL CHAM 4 40 THD 062 IN THK vede
102. 05W TC 0 100 RESISTOR 511 1 05W TC 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 511 1 05W TC 0 100 RESISTOR 178 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 04 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 178 1 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 10K 1 125W 0 100 RESISTOR 10K 1 125W 0 100 RESISTOR 75 1 OSW 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 75 1 O5W F 0 100 RESISTOR 511 1 05W F TC 0 4 100 RESISTOR 1K 1 O5W TC 04 100 RESISTOR 261 1 125W TC 04 100 RESISTOR 51 1 1 05W TC 0 100 RESISTOR 261 1 126W FTC 04 100 RESISTOR 261 1 126W TC 0 100 RESISTOR 261 1 126W TC 0 100 RESISTOR 261 1 126W TC 0 100 hh tart tac fata tong nd 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 25546 24546 24546 24546 28480 24546 24546 24546 25546 24546 C4 1 8 T0 909R F C4 1 8 T0 909R F C4 1 8 T0 511R F C4 1 8 T0 167R F C4 1 8 T0 147R F C4 1 8 T0 147RF C5 1 4 TO 511R F C4 1 8 TO 215R F C4 1 8 T0 215R F C4 1 8 TO 215R F C4 1 8 T0 511R F C4 1 8 T0 511R F C4 1 8 T0 68R1 F
103. 0698 7240 3 1 RESISTOR 1 47 1 OSW TC 0 100 24546 C3 1 8 T0 1471 F A20R23 D698 7220 9 RESISTOR 215 1 OSW TC 0 100 24546 C3 1 8 TO 215R F A20R24 0757 0470 3 2 RESISTOR 162K 1 125W TC 0 100 24546 C4 1 8 T0 1623 F A20R25 0698 7282 3 1 RESISTOR 82 5K 1 05W TC 0 100 24546 3 1 8 0 8252 A20R26 0698 7274 3 1 RESISTOR 38 3K 1 05W TC 0 100 24546 C3 1 8 T0 3832 F 2406 2622A 120 19 0698 7279 8 RESISTOR 61 9K 1 05W TC 0 100 24546 C3 1 8 TO 6192 F A20R20 0698 7271 9 RESISTOR 28 7K 1 05W TC 20 100 24546 C3 1 8 TO 2872 F A20R21 0698 7263 0 RESISTOR 13 3K 1 OSW F 0 100 24546 C3 1 8 TO 1332 F A20R22 0698 7255 0 RESISTOR 6 19K 1 05W x0 100 24546 C3 1 8 FO 6191 F A20R23 0698 7246 9 RESISTOR 2 61K A 05W TC 0 _100 24546 C3 1 8 TO 2611 F 20 24 0698 3260 9 RESISTOR 464K 1 125W 0 100 24546 1 8 4643 A20R25 0698 3266 5 RESISTOR 237K 1 125W TC 0 100 24546 4 1 8 2273 A20R26 0698 7286 7 RESISTOR 121K 1 05W TC 04 100 24546 C3 1 8 TO 1213 F A2OR2 0698 7261 8 1 RESISTOR 11K 1 05W TC 0 4 100 24546 3 1 8 70 1102 A20R28 0698 7253 8 3 RESISTOR 5 11K 1 05W TC 04 100 24546 C3 1 8 T0 5111 F A20R29 0698 7216 3 RESISTOR 147 196 05W TC 0 100 24546 C3 1 8 TO 147R F A20R30 0698 7251 e RESISTOR 4 22K 1 05W TC O 100 24546 C3 1 8 T04221 F 20 1 0698 7259 4 RESISTOR 9 09K 1 OSW TC 0 100 24546
104. 0757 0280 3 RESISTOR 1K 1 125W TC 2 0 100 24546 4 1 8 0 1001 A4R95 0698 8731 9 RESISTOR 4 8K 1 0 15 28480 0698 8731 AAR96 075 0280 3 RESISTOR 1K 1 125W TC a0 100 24546 C4 1 8 T0 1001 F AARS7 0695 3438 3 RESISTOR 147 1 125W TC 04 100 24546 CA4 1 8 TO0 147FA F AAR98 0757 0395 1 2 RESISTOR 56 2 1 125W TC 0 100 24546 C4 1 8 T0 56R2 F 4 99 0699 0139 7 RESISTOR 660 1 1W 0 15 28480 0699 0139 A4R100 0698 3155 1 RESISTOR 4 64K 1 125W TC 0 100 24546 4 1 8 0 4641 AAR101 0698 8827 4 12 RESISTOR 1M 1 125W TC 0 100 28480 0698 8827 4 102 0757 0280 3 RESISTOR 1K 1 125W TC 304 100 24546 C4 1 8 T0 1001 F AAR103 0698 3160 8 RESISTOR 31 6K 1 125W TC 0 100 24546 C4 1 8 TO 3162 F A4R104 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 A4R105 0698 3155 1 RESISTOR 4 64 1 125W TC 0 100 24546 4 1 8 0 4641 AAR106 0698 3446 3 7 RESISTOR 383 1 125W 0 100 24546 C4 1 8 T0 383R F 4 1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 4 2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 A4TP3 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 5 62 SQ 28480 1251 0600 4 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0500 5 1251 0600 9 CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ 50 28480 1251 0600 AATP6 1251 0600 9 CONNECTOR SGL CONT PIN 1 14
105. 0757 0460 1 3 RESISTOR 61 9K 1 125W TC 0 100 24546 4 1 8 0 6192 A20R48 0698 7260 7 RESISTOR 10K 1 05W TC 0 100 24546 C3 1 8 T0 1002 F A20R49 0698 7253 8 RESISTOR 5 11K 1 05W TC 0 100 24546 C3 1 8 TO 5111 F A20R50 0757 0290 5 2 RESISTOR 6 19K 1 125W TC 0 100 19701 4 1 8 10 6191 A20R51 0698 7260 7 RESISTOR 10K 1 05W F 0 100 24546 C3 1 8 T0 1002 F 20852 0698 7258 3 RESISTOR 8 25K 1 OSW TC 0 100 24545 C3 1 8 T0 8251 F A20R53 0698 7253 8 RESISTOR 5 11 1 05W F TC 0 100 24546 1 8 0 5111 A20R54 NOT ASSIGNEO A20R55 NOT ASSIGNED 20 56 0698 7236 7 RESISTOR 1K 1 05W 0 100 24546 C3 1 8 TO 1001 F A20R57 0757 0462 3 1 RESISTOR 75K 196 125W TC 0 100 24546 4 1 8 10 7502 A20R58 0757 0199 3 RESISTOR 21 5K 1 125W 0 100 24546 4 1 8 0 2152 A20R59 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 C3 1 8 TO 1001 F A20R60 0698 7259 4 RESISTOR 9 09K 1 05W TC m 0 100 24546 C3 1 8 T0 9091 F A20R61 0698 7236 7 RESISTOR 1K 1 OSW TC 0 100 24546 C3 1 8 TO 1001 F A20R62 0698 8744 4 1 RESISTOR 2K 05 1W TC 204 15 28480 0698 8744 A20R63 0698 7284 5 RESISTOR 100K 1 05W TC 0 100 24546 C3 1 8 T0 1003 F A20R64 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 C4 1 8 TO 101 F A20R65 0699 0381 1 2 RESISTOR 40K 1 1W TC 204 15 28480 0699 0381 A20R66 0699 0381 1 RESISTOR 40K 199 1W TC 04 15 28480 0699 0381
106. 0968 4 AIOVR3 1902 3214 9 1902 3214 9 A10VR5 1902 0960 6 1Hetei le rection 7 6 42 Qty t ped Table 6 3 Replaceable Parts Description RESISTOR 2 15K 1 125W TC 0 100 RESISTOR 18 5 ZW PW TC O 800 RIBBON RES 157 OHM FT 0253X 0625 RESISTOR 4 22K 1 125W TC 0 100 RESISTOR 511 196 125W TC 04 100 RESISTOR 511 196 125W TC 0 100 RESISTOR 13 3K 196 125W 0 100 RESISTOR 14 7K 1 125W TC 0 100 RESISTOR 12 1K 146 125W TC 0 100 RESISTOR 4 22K 1 125W TC 0 100 RESISTOR AK 1 125W TC 0 100 RESISTOR 10K 1 125W TC 2 04 100 RESISTOR 13 3K 196 125W TC 0 100 RESISTOR 2 15K 1 125W TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 31 6K 1 125W TC 0 100 RESISTOR 1 21K 1 125W TC 0 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 100 196 125W TC 0 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ 50 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ SQ IC OP AMP LOW BIAS H IMPD DUAL 8 DIP C IC OP AMP LOW BIAS H IMPD DUAL 8 DIP C DIODE ZNR 1N827 6 2V 5 DO 7 PD 4W DIODE ZNR 27V 5 DO 35 PD 4W TC 095 DIODE ZNR 16 2V 2 DO 35 PD 4W DIODE ZNR 16 2V 2 DO 3
107. 1 125W 0 100 24546 C4 1 8 T0 1783 F ASR64 0688 8827 4 RESISTOR 1M 1 125W 2 0 100 28480 0698 8827 ASR65 0757 0420 3 RESISTOR 750 1 125W TC 0 100 24546 4 1 8 10 751 ASR66 0757 0416 7 RESISTOR 511 196 125W TC 204 100 24546 CA4 1 8 TO 511R F A5R67 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 TO 511R F 5 68 0698 3443 0 5 RESISTOR 287 1 125W TC a O 100 24546 C4 1 8 T0 287RF ASR69 0698 3441 8 RESISTOR 215 1 125W TC 9 100 24546 4 1 8 0 215 A5R70 0757 0419 0 7 RESISTOR 681 1 125W TC 0 100 24546 C4 1 8 T0 681R F ASR71 0757 0405 4 4 RESISTCR 162 196 125W TC 0 4 100 24546 C4 1 8 T0 162R F A5R72 0757 0419 0 RESISTOR 681 1 125W TC 0 100 24546 C4 1 8 T0 68 1R F A5R73 2100 3103 6 1 RESISTOR TRMR 10K 10 SIDE ADJ 17 TRN 02111 43P 103 A5R74 0699 0239 8 1 RESISTOR 59K 1 1W TC 0 15 28480 0699 0239 ASR75 0757 0280 3 RESISTOR 1K 196 125W F TC 0 100 24546 C4 1 8 T0 1001 F AS5R76 07570280 3 RESISTOR 1K 1 125W 04 100 24546 C4 1 8 T0 1001 F 5 77 0757 0280 3 RESISTOR 1K 1 125W 0 100 24546 C4 1 8 T0 1001 F A5R78 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 511R F A5R79 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 5 0 0757 0346 2 RESISTOR 10 1 125W TC 0 100 24546 C4 1 8 T0 10R0 F A5R81 07570280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0
108. 1 125W TC 04 100 24546 C4 1 8 T0 2610 F A19R19 0698 7201 6 RESISTOR 34 8 1 05W TC 304 100 24546 C3 1 8 TO 34R8 F A19R20 0757 0280 3 RESISTOR 1K 1 125W TC 9 100 24546 C4 1 8 T0 1001 F A19R21 0698 7205 0 RESISTOR 51 1 1 OSW TC e 0 100 24546 3 1 8 51 1 A19R22 0757 0440 7 RESISTOR 7 5K 1 125W TC 0 100 24546 C4 1 8 T0 7501 F A19R23 07570289 2 RESISTOR 13 3K 1 125W TC 04 100 19701 MF4C 1 8 T0 1332 F 19824 0757 0442 9 RESISTOR 10K 1 125 W 04 100 24546 C4 1 8 T0 1002 F A19R25 0698 3158 4 RESISTOR 23 7K 1 125W F TC 0 100 24546 4 1 8 0 2372 serioen Cette ai i deed fe tai Ta Ht 2 Pirata e BAHE 16 70190 6 57 I a ee Replaceable Parts Model 8901B Table 6 3 Replaceable Parts HP Part Number 0 Reference Designation Mfr Qty Code Description Mfr Part Number A19 08902 60126 SERIAL PREFIX 2909A AND ABOVE A19R26 A19R27 19 28 A19R29 A1SR30 19 1 A19R32 9833 A19R34 19835 A19R36 A19R37 A19F38 A19R39 19940 A19R41 9842 A19R43 19844 19845 19 46 A19R47 19 48 19 49 A19R50 A19R51 A19R52 A19R53 A19R54 A19R55 A19R56 A19R57 A19R58 A19R59 A19R60 A19R61 A19R62 A19R63 19 64 19865 19866 A19R67 19 68 A19H69 A19R70 A19R71 tet 6 88 reg 1810 0203 0698 3132
109. 1 IW 0 15 RESISTOR 9K 1 1W TC 0 5 RESISTOR 1K 1 1W F TC 0 5 EE Mfr Code 28480 28480 9N171 9 171 9 171 9N171 9 171 9N171 9N171 28480 28480 28480 28480 28480 28480 00000 28480 28480 28480 28480 24546 24546 28480 01121 24546 28480 28480 28480 28480 28480 24546 24546 28480 28480 28480 28480 28480 28480 28480 28480 24546 28480 28480 28480 G Model 8901B Mfr Part Number 0160 4832 0160 4787 1 4150 1 4150 1 150 1 150 1 4 150 1 4150 1 4150 1250 1425 1250 1425 9100 3562 9140 0210 9140 0210 08901 00074 ORDER BY DESCRIPTION 2190 0008 0698 8822 0698 8822 0699 0790 4 1 8 10 1001 4 1 8 0 1001 0699 0790 208A103 4 1 8 0 1001 0699 0778 0699 0785 0699 0780 0699 0777 0699 0789 4 1 8 70 1001 4 1 8 0 5112 0699 0782 0699 0780 0699 0784 0699 0776 0699 0780 0699 0788 0699 0787 0699 0785 C4 1 8 T0 3161 F 0699 0791 0699 0057 0698 6414 A anala hange rev 16JUL90 8901 Reference Designation A52H31 AS2R32 A52R33 AS2R34 AS2R35 AS2R36 52 37 AS2R38 AS2R39 AS2R60 A52R41 52 42 52943 AS2R44 AS2R45 AS2R46 AS2R47 52848 A52R49 2314A ONLY A352 R50 23324 AND ABOVE A52 R50 A52R51 A52R52 A52R53 A52R54 A52R55
110. 1 8 T0 4640 F A6R81 0698 4626 3 1 RESISTOR 1 47 1 25W TC 0 100 24546 5 1 4 1471 A6R82 0698 3440 7 7 RESISTOR 196 1 125W TC 0 100 24546 C4 1 8 T0 196R F A6RB83 R86 NOT ASSIGNED A6R87 07570442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F A6R88 0699 0142 3 RESISTOR 825 1 1W TC 04 15 28480 06990143 A6R89 0757 0401 0 RESISTOR 100 1 125W TC 04 100 24546 C4 1 8 T0 101 F AGR90 0757 0447 4 RESISTOR 16 2K 196 125W F TC 20 100 24546 4 1 8 0 1622 A6R91 0757 0442 9 RESISTOR 10K 196 125W F TC 204 100 24546 C4 1 8 T0 1002 F thefer to ection T fos update information Factory Selected oi ponent Refer to i port changes Replaceable Parts Reference HP Part Qty Designation Number D A6R92 0698 0082 7 A6R93 0598 3440 7 A6R94 0757 0338 2 A6R95 0757 0394 0 6 96 0698 8879 7 1 6 97 0598 3153 9 7 A6R98 0757 0440 7 6 6 99 0757 0401 0 A6R100 0698 3132 4 A6R101 0757 1094 9 A6R102 0698 3432 7 A6R103 0698 3152 8 6 104 0698 3454 3 A6R105 0757 0199 3 A6R106 A6R107 0757 0199 3 AGR108 0757 0199 3 A6R109 0698 8825 2 1 A6R110 0757 0416 7 A6R111 12 0698 8827 4 A6R113 0683 2265 1 A6R114 0757 0280 3 AGR115 0757 0442 9 A6R116 A6R117 0757 0438 3 A6R118 0698 3152 8 6 119 0757 0465 6 A6R120 0757 0317 7 2 A6R121 0757 0442 9 A6R122 0757 0438 3 A6R123 A6R124 0698 3440 7 A6R125 0683 2265 1 A6R126 0698 3440 7 A6R127 A6R128 0757 0
111. 1 8 T0 51R1 F 0698 8979 4 1 8 0 3831 4 1 8 0 7501 4 1 8 10 101 4 1 8 0 2610 4 1 8 70 1471 PMES5 1 8 TO 26R1 F C4 1 8 TO 34B 1 F C4 1 8 T0 2153 F C4 1 8 T0 2152 F 4 1 8 70 2152 4 1 8 0 2152 0698 8825 C4 1 8 T0 511 AF 0698 8827 CB2265 4 1 8 0 1001 4 1 8 0 1002 C4 1 8 T0 5111 F 4 1 8 70 3481 4 1 8 0 1003 C4 1 8 T0 1331 F 4 1 8 0 1002 4 1 6 0 5111 C4 1 8 T0 196R F CB2265 C4 1 8 TO 196R F C4 1 8 TO 101 F C4 1 8 T0 2153 F 1251 0500 1251 0600 LM308AH CA307T LM308AH NESS32AFE DG201BK LM312H SN74LS75N SN74LS138N SN74LSOON 1902 0072 1N827 1902 3059 pori change rev 16JUL90 Model 8901B Reference HP Part Qty Designation Number A10 2314A TO 2515A A10 08901 60141 8 2517A TO 3116A A10 08901 60269 1 3122A AND ABOVE A10 08901 60311 4 A10C1 0180 0229 7 A10C2 0160 4831 3 A10C3 0160 4831 3 A10C4 0160 5098 6 10 5 0180 0374 3 A10C6 0180 1746 5 A10C7 0180 1748 5 10 8 0160 4832 4 A10C9 0180 1794 3 A10C10 0180 0116 1 A10C11 0160 4812 0 10 12 0180 0116 1 A10C13 0160 4822 2 A10C14 0160 4830 2 A10C15 0160 4830 2 A10C16 0180 2141 6 A10C17 0160 5098 6 A10C18 0180 0229 7 A10C19 0160 5098 6 A10C20 0180 0229 7 A10CR1 1901 1098 1 A10CR2 1901 1098 1 A10CR3 1901 1098 1 1901 1098 1 A10CR5 1901 0028 5 A10CR6 1901 0028 5 A10CR7 1901 1098 1 A10CR8 1901 1098 1 A10CR9 19
112. 10 N 2 N 2 Model 8901B NOTE Test 6 is not always conclusive The test may not always detect a failure of the VCO to tune to the bottom of the band If the VCO does fail to tune to the bottom of its band the instrument will not tune to certain frequencies in the track mode Test 7 HF VCO Mid Range Test See Service Sheet 18 Tests the DAC s ability to control the HF VCO near the center of its frequency range The DAC is programmed by the Controller to output a tune voltage near the center of the range If the HF VCO does not tune to between 454 and 575 MHz 7 will be displayed in digit position 6 Test 8 Undefined DAC and HF VCO Incremental Range Tests N N N N 3 3 3 3 Test 9 Gain Test For Most Significant DAC See Service Sheet 20 Tests the gain of the most significant DAC The Controller sends a hexadecimal 55 to the most significant DAC MSDAC and a hexadecimal AA to the least significant DAC LSDAC The Controller then counts the frequency of the HF VCO The MSDAC is then changed to AA The Controller again counts the frequency of the HF VCO and then computes the difference between the first and second frequencies This difference should fall between 139 and 285 MHz If it does not 9 will be displayed in digit position 2 Test 10 Gain Test For Least Significant DAC See Service Sheet 20 Tests the gain of the least significant DAC The Controller sends a hexadecimal AA to the most si
113. 10 C3 C25 MIN a 5 28480 0122 0167 Section T 00 boi t aeter selected oinpenent ro section A gratia part change 16JUL90 6 103 Replaceable Parts Reference HP Part Designation Number 22 13 1901 0179 A22CR14 1901 0179 A22CR15 1901 0179 A22CR16 1901 0179 A22E1 9170 0029 A22E2 9170 0029 A22J1 1250 1220 2190 0124 2950 0078 A22L1 9140 0112 A2212 9140 0264 A22L3 9140 0325 A22L4 9140 0112 2215 9100 1615 A22L6 9140 0324 2217 9100 1616 2218 9140 0180 2219 9100 1616 A22L10 9140 0112 A22MP1 08901 00026 2360 0113 A22MP2 5001 0176 A22MP3 5001 0176 A2201 1854 0477 A2202 1853 0012 1200 0173 A22Q3 1854 0610 A22Q4 1854 0610 A2205 1854 0247 A22Q6 18540247 A22Q7 1854 0610 2208 1854 0610 2209 1853 0001 1200 0173 A22R1 0757 0401 A22R2 0757 0401 A22R3 0757 0422 A22R4 0757 0280 A22R5 0698 3155 A22R6 07570439 A22R7 0698 3430 A22R8 0698 3155 A22R9 0757 0439 A22R10 0698 3430 oQ Oo ON Moo N o o oo eo Oooo nhs Om Qty tRefer to Section 7 for update information 6 104 Table 6 3 Replaceable Parts Description DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 CORE SHIELDING BEAD CORE SHIELDING BEAD CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID
114. 10 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 26 5 0160 4065 5 2 CAPACITOR FXD 1UF 20 250VAC RMS 28480 0160 4065 26 6 0180 3110 1 1 CAPACITOR FXD 013F 75 10 40VDC AL 28480 0180 3110 2190 0034 5 WASHER LK HLCL NO 10 194 IN ID 28480 2190 0034 2680 0099 1 SCREW MACH 10 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION A26C7 0180 0677 9 1 CAPACITOR FXD 5800UF 75 10 40VDC AL 28480 0180 0677 2190 0034 5 WASHER LK HLCL NO 10 194 IN ID 28480 2190 0034 A26C7 2680 0099 1 SCREW MACH 10 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 26 0180 1797 6 1 CAPACITOR FXD 50UF 50 10 150 AL 56289 39250515054 26 9 0180 2207 5 1 CAPACITOR FXD 100UF 10 10VDC TA 56289 1500107 901092 A26CR1 1901 0662 3 6 DIODE PWR RECT 100V 6A 04713 MR751 A26CR2 1901 0662 3 DIODE PWR 100V 6A 04713 MR751 A26CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 A26CR4 1901 0662 3 DIODE PWR 100 6A 04713 751 26 5 1901 0662 3 DIODE PWR RECT 100V 6A 04713 MR751 A26CR6 1901 0662 3 DIODE PWR RECT 100V 6A 04713 MR75 A26CR7 1901 0662 3 DIODE PWR RECT 100V 6A 04713 MR751 A26CRB 1901 0028 5 DIODE PWR RECT 400V 750MA DO 29 28480 1901 0028 26 1 2110 0331 7 1 FUSE 250V 25X 27 28480 2110 0321 1251 8305 8 4 CABLE CLAMP RECT CONN 28480 1253 8305 A26J1 1251 3412 8 1 CONNECTOR 6 PIN M POST TYPE 28480 1251 3412 A26J2 1251 5169 6 CONNECTOR 6 POST TYPE 28480 1251 5169 A26J3 1251 5169 6 CONNECT
115. 10 dB error Change 23 adds increased ERROR 01 limits up to 100 kHz for the testing of drifting signal generators when in Track Mode Tuned RF level Software date code 351 1986 2718A and Above ROM part numbers ROM 1 08901 80105 ROM 2 08901 80106 ROM 3 08902 80107 Change 24 updates the firmware to increase averaging special function 32 1 and to reduce settling time when making power meter measurments 7 3 CABINET PARTS COLOR CHANGE rev 15JUN9O 2912A and above NOTE Serial prefix 29124 changes the color of the instrument covers and acces sories The old color cover and accessories are no longer availiable If your instrument has serial prefixes 2911A and below and you must replace of these parts we recommend that you order the full set of covers and ac cessories Affected cabinet parts are MP3 12 MP14 MP18 and MP27 see Table 6 3 1 8 Instrument Changes Model 8901B 7 4 1 LEDS A1DS31 37 AND A1DS42 45 2314A to 2914A If the serial prefix of your instrument falls within 2314A to 2914A and you must replace A2DS31 37 A1DS42 45 you must also order a new spacer and light pipe listed under 15 2920 and above in the miscellaneous replaceable parts list Td rev 154 90 Model 8901B Service Section 8 SERVICE 8 1 INTRODUCTION TO THIS SECTION This section contains information for troubleshooting and repairing the Modulation Analyzer Included a
116. 100 125W TC 20 100 125W TC 0 100 RESISTOR 511 1 25W TC 0 100 RESISTOR 215 1 RESISTOR 215 1 RESISTOR 215 1 RESISTOR 511 1 RESISTOR 511 1 RESISTOR 68 1 1 125W TC 94 100 RESISTOR 75 1 0 RESISTOR 51 1 ce 1 Peler bu w 125W TC 0 106 125W 0 100 125W TC 0 190 125W TC 0 100 125W 0 100 5W TC 0 4 100 OSW TC 40 100 130 Mfr Code 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 ad 8901B Mfr Part Number 08901 60024 08901 60274 SERIAL PREFIX 2314A 2806 C4 3 8 T0 S11R F C4 1 8 T0 68R1 F C4 1 8 TO 68R1 F C4 1 8 T0 68R1 F C4 1 8 TO 511R F C4 1 8 T0 511R F C4 1 8 T0 511R F C4 1 8 T0 2610 F C4 1 8 T0 2610 F 4 1 8 0 2610 4 1 8 0 1002 C4 1 8 T0 909R F C4 1 8 T0 2372 C4 1 8 T0 6192 F 4 1 8 75 C4 1 8 T0 511R F 4 1 8 70 1003 C4 1 8 T0 68R1 F C4 1 8 T0 68R1 F C4 1 8 T0 422R F C4 1 8 T0 68R1 F C4 1 8 TO 1961 F C4 1 8 T0 909R F C4 1 8 T0 S09R F C4 1 8 T0 511R F 4 1 8 70 1478 Ca 1 8 T0 147R F 4 118 9 147 C5 1 4 TO 511R F C4 1 8 T0 215R F C4 1 8 T0 215R
117. 1001 ASTP1 1251 0600 0 CONNECTOR SGL CONT 1 14 MM BSC SZ SQ 28480 12510600 ASTP2 12510600 0 CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ SQ 28480 1251 0600 ASTP3 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 ASTP4 12510600 0 CONNECTOR SGL CONT 1 14 MM BSC SZ SQ 28480 1251 0600 5 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 12510600 ASTP6 1251 0500 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 ASTP7 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 12510600 501 18260471 2 2 AMP LOW DRIFT TO 99 PKG 28480 1826 0471 to Section fer update iifortiiation hactore Selected Cotuponent te ectiion 53 DS part change 6 30 rev IGJUL90 Model 8901B Reference Designation 2314A 2627A 502 2635A AND ABOVE 6 2 2314 2627 507 2635A AND ABOVE 507 ASUS 99 5010 5011 5012 5013 5014 5015 5016 5017 5018 ASW1 2314A TO 2627A A5W2 2635A AND ABOVE A5W2 ASVRI ASVR2 ASVRa3 AS5VRA tHefer 76 tion 7 rev 16JUL90 HP Part Number 1826 0969 3 1826 0371 1826 0098 1826 0098 1826 0059 N O u 1826 0783 9 1826 0371 1826 0180 1826 0605 1826 0605 1826 0605 1820 1195 1820 1211 1820 1411 1820 1198 1826 0371 OF Oc 1820 1216 3
118. 125W TC 04 100 24546 C4 1 8 TO 316R F A3R5529 0698 6414 1 RESISTOR 1K 1 1W TC 0 5 28480 0698 6414 A3R56 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 1001 F A3R57 0757 0439 4 7 RESISTOR 6 81K 196 125W TC 0 100 24546 4 1 8 0 6811 A3RS58 NOT ASSIGNED A3R59 0757 0401 0 49 RESISTOR 100 1 125W F TC 0 100 24546 4 1 8 0 10 A3R60 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 TO 101 F A3R61 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 TO 1002 F A3R62 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 A3R63 0757 0280 3 RESISTOR 1K 1 125W TC O 100 24546 C4 1 8 T0 1001 F A3R64 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 CA 1 8 TO 1001 F A3R65 0698 7272 3 1 RESISTOR 31 6K 1 OSW TC 0 100 24546 C3 1 8 T0 31 62 F 1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SO 28480 1251 0600 A3TP3 1251 0600 9 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 4 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 12510600 5 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 A3U1 1826 0413 2 LOW BIAS H IMPD 99 PKG 34371 2 2605 5 A3U2 1826 0413 2 IC AMP LOW BIAS H IMPD 99 PKG 34371 HA2 2605 5 A3U3 1826 0413 2 IC LOW BIAS H IMPD TO 99 PKG 34271
119. 1810 0203 1810 0203 0757 0394 0698 7260 0698 7260 0698 3132 0757 0420 0698 7195 0757 0276 0757 0394 0757 0394 07570276 0757 0416 2100 2413 0757 0416 0757 0416 0757 0397 0757 0397 0757 0416 0757 0416 0757 0346 0757 0416 0757 0416 0757 0397 0757 0397 0757 0397 0757 0416 0757 0416 0757 0416 0698 3132 0698 3132 0698 3132 0757 0442 0757 0422 0698 3158 0757 0398 0757 0416 0757 0465 0757 0397 0757 0397 0698 3447 0757 0397 0698 0083 ber ong eolat cC PN o N 4 T 0 b oo ohh NI 3 2 NETWORK RES 8 SIP470 0 OHM X 7 RESISTOR 261 1 125W TC 0 100 NETWORK RES 8 SIP470 0 OHM X 7 NETWORK RES 8 SIP470 0 OHM X 7 RESISTOR 51 1 1 125W F TC 204 100 RESISTOR 10K 1 05W TC 0 100 RESISTOR 10K 1 05W TC 20 4 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 750 196 125W TC 0 100 RESISTOR 19 6 1 05W TC 0 100 RESISTOR 61 9 1 125W TC lt 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 61 9 1 125W TC 0 100 RESISTOR 511 195 125W TC 0 100 RESISTOR TRMR 200 104 SIDE ADJ 1 TRN RESISTOR 511 1 125W F TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 68 1 1 125W 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 511 1 1
120. 2 WASHER LK INTL T 3 8 IN 3774N D NUT HEX DBL CHAM 3 8 32 THD 094 IN THK RF SWITCH GROUND BINDING POST SGL SGL TUR JGK RED WASHER LK INTL T 3 8 IN 377 IN ID NUT HEX DBL CHAM 3 8 32 THD 094 IN T HK FREQ OFFSET TTL OUT CONNECTOR RF BNC FEM SGL HOLE FR 50 OHM WASHER LK INTL T 3 8 IN 377 IN ID NUT HEX DBL CHAM 3 8 32 THD 094 IN THK FRONT FRAME SCREW MACH 6 32 25 IN LG 82 DEG CORNER STRUT SCREW MACH 6 32 312 IN LG PAN HO POZI SCREW MACH 6 32 438 IN LG PAN HD POZI SCREW MACH 8 32 25 IN LG 100 DEG MP2 TO MP1 MP 16 FRONT FRAME SCREW MACH 6 32 25 IN LG 82 DEG CORNER STRUT SCREW MACH 6 32 312 IN LG PAN HO POZI SCREW MACH 6 32 438 IN LG 21 SCREW METRIC SPECIALTY M4 X 0 7 THD 6 MP2 TO MP1 MP16 TRIM TOP STRAP HANDLE 18 IN COVER TOP ASSY RETAINER RING E R EXT 141 IN DIA STL RETAINER PUSH ON AND EXT 265 IN DIA STL COV BOTTOM ASSY RETAINER RING E R EXT 141 IN DIA STL RETAINER PUSH ON RND EXT 265 IN DIA STL baerery selected 5 s oe a Mfr Code 28480 28480 28480 28480 28480 00000 28480 28480 28480 00000 28480 28480 00000 28480 28480 00000 28480 28480 00000 28480 00000 28480 00000 00000 00000 28480 00000 28480 00000 00000 28480 28480 28480 28480 28480 28480 28480 28480 28480 Replaceable Parts Mfr Part Number 1250 1811 1250 1811 1250 1811 08662 60304 21900104 ORDER
121. 20 50VDC CER 28480 0160 4084 A2C22 NOT ASSIGNED 2 23 0160 2055 9 CAPACITOR FXD 01UF 80 20 100VDC CER 28480 0160 2055 2 24 ASSIGNED 2 25 0180 1714 7 CAPACITOR FXD 330UF 10 6VDC TA 56289 150D337X9006S2 A2C26 0160 4849 3 1 CAPACITOR FXD 9100PF 1 100VDC 28480 0160 4849 A2C27 0160 2302 9 3 CAPACITOR FXD 4000PF 1 100VDC MICA 28480 0160 2302 A2C28 NOT ASSIGNED A2C29 gt 0160 6606 4 1 CAPACITOR FXD 02UF 1 200VDC 28480 0160 6606 2 30 0140 0154 3 1 CAPACITOR FXD 1300PF 5 500 72136 DM20F132J0500WV1CR A2C31 0160 4759 4 1 CAPACITOR FXD 6800PF 1 200VDC 28480 0160 4759 2 32 0160 3538 5 1 CAPACITOR FXD 750PF 5 100VDC MICA 28480 0160 3538 A2C33 0160 3536 9 1 CAPACITOR FXD 620PF 5 100VDC MICA 28480 0160 3536 A2C34 0140 0198 5 4 CAPACITOR FXD 200PF 4 596 300VDC MICA 72136 DM15F201J0300WV1CR 2 35 ASSIGNED 2 36 0160 2055 9 O1UF 80 20 100VDC CER 28480 0160 2055 A2C37 0160 2055 9 CAPACITOR FXD O1UF 80 20 100VDC CER 28480 0160 2055 2 38 0160 2222 2 1 CAPACITOR FXD 1500PF 5 300VDC MICA 28480 0160 2222 2 1 1901 0040 1 34 DIODE SWITCHING 30V 50 2 5 DO 35 28480 1901 0040 A2CR2 1901 0040 1 DIODE SWITCHING 30V SOMA 2NS DO 35 28480 1901 0040 A2J1 1250 1220 0 31 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 36 WASHER LK INTL NO 10 195 IN ID 28480 2190 0124 2950 0078 9 37 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 2 12 1250 12
122. 204 100 CER 28480 0160 3879 20 17 0160 0161 4 CAPACITOR FXD 01UF 10 200VDC POLYE 28480 01600161 A20C18 0180 2853 7 CAPACITOR FXD 10UF 20 100VDC 56289 1090106x0100C2 A20C19 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A20C20 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A20C21 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A20C22 0160 3878 6 1000PF 20 100VDC CER 28480 0160 3878 A20C23 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A20CR1 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR2 19010040 1 DIODE SWITCHING 30V SOMA 2NS DO 35 28480 1901 0040 A20CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 A20CR4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A20CRS 1901 0040 1 DiODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR6 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR7 1901 0040 1 D ODE SWITCHING 30V 50MA 2NS 00 35 28480 1901 0040 A20CR8 1901 0040 DIODE SWITCHING 30V 50MA 2 5 00 35 28480 1901 0040 A20CR9 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS 00 35 28480 1901 0040 20 10 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS 00 35 28480 19010040 20 11 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR12 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR13 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0
123. 25088 D 6 R8GS1B35K 23 16 0160 0570 9 CAPACITOR FXD 220PF 20 100VDC CER 20932 5024EM100RD221M 23 17 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 23 18 0160 3876 4 6 CAPACITOR FXD 47PF 20 200VDC CER 28480 0160 3876 23 19 0160 3876 4 CAPACITOR FXD 47PF 20 200VDC CER 28480 0160 3876 A23C20 0160 3873 1 CAPACITOR FXD 4 7PF 5PF 200VDC CER 28480 0160 3873 A23C21 0160 3876 4 CAPACITOR FXD 47PF 20 200VDC CER 28480 0160 3876 A23C22 0160 3876 4 CAPACITOR FXD 47 20 200VDC CER 28480 0160 3876 A23C23 0160 3873 1 CAPACITOR FXD 4 7PF 5 200VDC CER 28480 0160 3873 A23C24 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 22 25 0160 3873 1 CAPACITOR FXD 4 7PF 5PF 200VDC CER 28480 0160 3873 A23C26 0160 3875 3 CAPACITOR FXD 22PF 5 200VDC CER 0 30 28480 0160 3875 A23C27 0180 1745 4 1 CAPACITOR FXD 1 5UF 10 20VDC TA 56289 1500155X9020A2 A23C28 0160 3875 3 CAPACITOR FXD 22PF 5 200VDC CER 0 30 28480 0160 3875 A23C29 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC TA 56289 150D105X9035A2 A23C30 0160 5699 3 CAPACITOR FXD 20PF 5 100VDC CER 0 30 28480 0160 5699 A23C31 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC 56289 150D105X9035A2 A23C32 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC 25088 D6R8GS1835K A23C33 0180 0197 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 23 34 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC 56289 1500105X9035A2 A23C35 0180 0197
124. 28480 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 IC FF ECL D M S DUAL 04713 IC GATE ECL OR NOR TPL 04713 SCHMITT TRIG TTL LS NAND QUAD 2 INP 01295 IC SCHMITT TRIG TTL LS INV HEX 1 01295 CNTR TTL LS BIN ASYNCHRO 01295 IC FF TTL S D TYPE POS EDGE TRIG 01295 MUXF DATA SEL TTL LS 8 TO 1 LINE 01295 CNTR TTL LS ASYNCHRO 01295 IC CNTR TTL LS BIN ASYNCHRO 01295 IC CNTR TTL LS DECD ASYNCHRO 01295 IC CNTR TTL LS BIN ASYNCHRO 01295 IC INV TTL LS HEX 1 INP 01295 iC TTL LS D TYPE 4 BIT 01295 GATE TTL LS NAND QUAD 2 INP 01295 SOCKET IC 14 CONT DIP DIP SLDR 28480 IC GATE TTL LS NAND QUAD 2 INP 01295 14 CONT DIP DIP SLDR 28480 IC FF TTL D TYPE POS EDGE TRIG 01295 IC DCDR TTL S 3 TO 8 LINE 3 INP 01295 GATE TTL LS NAND QUAD 2 INP 01295 IC CNTR TTL LS BIN ASYNCHRO 01295 IC GATE TTL LS NAND QUAD 2 INP 01295 IC RCVR TTL LINE RCVR DUAL 2 INP 01295 CRYSTAL QUARTZ 10 000 MHZ 28480 EXCEPT OPT 002 selected Component te section 9 Replaceable Parts Mfr Part Number 4 1 8 1001 4 1 8 0 1001 4 1 8 0 1001 4 1 8 10 3831 4 1 8 0 5111 C4 1 8 T0 511R F C 4 1 8 TO 511R F C4 118 T0 75R0 F 4 1 8 0 1001 4 1 6 0 68 1 4 1 8 70 5111 55 1 8 0 19 6 C4 1 8
125. 28480 1854 0071 17 1 0757 0442 9 RESISTOR 10K 1 125W TC 04 100 24546 C4 1 8 T0 1002 F A17R2 0757 0200 7 RESISTOR 5 62K 1 125W TC 0 100 24546 4 1 8 0 5621 A17R3 0757 0346 2 RESISTOR 10 1 125W TC 0 100 24546 C4 1 8 T0 10R0 F A17R4 0698 8821 8 RESISTOR 5 62 1 125W TC 04 100 28480 0698 8821 A17R5 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F 1786 0698 0087 1 RESISTOR 316 1 25W 9 100 24546 C5 1 4 TO 3160 F A17R7 0698 0085 0 RESISTOR 2 61 1 125W TC 04 100 24546 4 1 8 0 2611 17 8 0699 0135 3 RESISTOR 71 2 1 25W TC 0 100 28480 0699 0135 17 9 0699 0135 3 RESISTOR 71 2 1 25W TC 0 100 28480 0699 0135 A17R10 0698 7204 9 3 RESISTOR 46 4 196 05W TC 0 100 24546 C3 1 8 TO 46R4 F A17R11 0698 7220 9 2 RESISTOR 215 1 05W TC 0 100 24546 C3 1 8 TO 215R F A17R12 0698 7204 9 RESISTOR 46 4 1 05W TC 04 100 24546 C3 1 8 TO 46R4 F A17R13 0757 0467 8 RESISTOR 121K 1 125W TC 04 100 24546 4 1 8 0 1213 A17R14 0698 3157 3 RESISTOR 19 6K 1 125W TC 0 100 24546 C4 1 8 T0 1962 F A17R15 0757 0280 3 RESISTOR 1K 196 125W TC 0 100 24546 4 1 8 70 1001 A17R16 0699 0392 4 1 RESISTOR 34 8 1 125W TC 0 100 28480 0699 0392 A17R17 07570439 4 RESISTOR 6 81K 1 125W TC 0 100 24546 4 1 8 0 6811 17 18 0757 0441 8 RESISTOR 8 25K 1 125W TC 04 100 24546 C4 1 8 T0 8251 F A17R19 0698 7204 9
126. 28480 5060 9436 1535 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1 36 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1537 5060 9436 7 PUSHBUTTON SWITCH P C MOUNT 28480 5060 9436 1538 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1539 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 A1S40 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1541 5060 8436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1542 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1543 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1544 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 A1S45 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 1546 5060 9436 7 PUSHBUTTON SWITCH MOUNT 28480 5060 9436 ATP 1251 0600 0 101 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 2 1251 0600 0 CONNECTOR SGL CONT 1 14 5 52 SQ 28480 1251 0600 AITP3 1251 0690 9 CONNECTOR SGL CONT 1 14 5 52 SO 28480 1251 0600 4 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 AiTPS 12510600 0 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 1820 1729 3 19 tC LCH TTL LS COM CLEAR 01295 SN74LS259N 102 1820 2075 4 5 IC TRANSCEIVER TTL LS BUS OCTL 28460 1820 2075 A1U3 1990 0574 3 10 DISPLAY NUM SEG 1 CHAR 43 28480 5082 7651 1200 0803 8 10 SOCKET IC 14 CONT DIP DIP SLDR 28480 1200 0803 1
127. 28R7 F 1251 0600 1251 0600 1251 0600 1826 0372 1826 0372 1820 5543 A Pirata part 6 113 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part D inti Mfr escription Mfr Part Number Designation Number D y Code 2314A TO 2608A 25 08901 60137 2 1 AUDIO MOTHER BOARD ASSEMBLY 28480 08901 60137 2619A AND ABOVE A25 08902 60116 8 1 AUDIO MOTHER BOARD ASSEMBLY 28480 08902 60116 25 0160 2055 9 CAPACITOR FXD 01UF 80 20 100VDC CER 28480 0160 2055 25 2 0160 3466 8 1 CAPACITOR FXD 100PF 10 1KVOC CER 28480 0160 3466 A25J1 1250 0836 2 1 CONNECTOR RF SMC M PC 50 OHM 28480 1250 0836 A25J2 1251 7998 3 4 CONN POST 100 PIN SPCG 16 28480 1251 7998 A25J3 1251 7998 3 CONN POST 100 PIN SPCG 16 28480 1251 7998 A25J4 1251 5169 6 CONNECTOR 6 PIN M POST TYPE 28480 1251 5169 25 5 1251 5643 1 1 CONNECTOR 4 PIN POST 28480 1251 5643 25 1 0698 3443 0 RESISTOR 287 1 125W TC 0 100 24546 C4 1 8 T0 287R F A25R2 07570280 3 RESISTOR 1K 1 125W 0 100 24546 4 1 8 0 1001 A25XA1 NOT ASSIGNED A25XA2 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 25 1251 2035 9 CONNECTOR PC EDGE 15 2 ROWS 28480 1251 2035 A25XA4 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 A25XA5 1251 1365 6 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 25 6 1251 2035 9 CONNECTOR PC EDGE 1
128. 29 AS3C30 A53C31 A53C32 AS3C33 AS3C34 AS3C35 AS3C36 AS3C37 AS3C38 53 39 53 40 53 41 53 42 53 43 AS3C44 53 45 7 rec 16 11 90 Number 08901 60130 0180 2111 0180 1746 0180 1746 0180 1746 0180 2929 0160 4389 0160 4389 0160 0575 0160 0575 0160 4624 0160 0575 0160 0575 0180 2929 0160 2290 0160 4389 0160 0575 0160 0575 0160 4624 0160 2290 0160 4389 0160 4624 0160 2290 01604389 0180 1746 0160 0575 0160 0575 0160 0157 0180 2111 0160 4389 9160 4389 0160 0575 0160 0575 0160 5546 0160 5546 0180 1746 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 5370 0160 3879 0160 3879 0160 3674 0160 3879 NNN wow A 0 homo many amp A A O C4 inde raat ben Table 6 3 Replaceable Parts Description POWER METER ASSEMBLY CAPACITOR FXD 33UF 10 35VDC CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 68UF 10 10VDC CAPACITOR FXD 100PF 5 200VDC CER CAPACITOR FXD 100PF 4 5PF 200VDC CER CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 047UF 20 CER CAPACITOR FXD 8200PF 5 50VDC CER CAPACITOR FXD 047UF 20 50VDC 0470 20 50VDC CAPACITOR FXD 68UF 10 10
129. 304 25 28480 0698 6624 A13R16 0698 6624 5 RESISTOR 2K 1 125W TC 0 25 28480 0698 6624 A13R17 0757 0442 9 RESISTOR 10K 1 125W TC 2 0 100 24546 C4 1 8 T0 1002 F A13R18 0698 6360 6 RESISTOR 10K 1 125W TC 0 25 28480 0698 6360 13 19 0698 6348 0 1 RESISTOR 3K 1 125W TC 0 25 28480 0698 6348 At3R20 07570442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F AYSR2 0757 0459 B 2 RESISTOR 56 2K 1 125 TC 04 100 24546 C4 1 8 T0 5622 F A13R22 0757 0441 8 RESISTOR 8 25K 1 125W 0 100 24546 4 1 8 70 8251 A13R23 0757 0439 4 RESISTOR 6 81K 196 125W TC 04 100 24546 C4 1 8 T0 6811 F A13R24 0698 3162 0 3 RESISTOR 46 4K 1 125W TC 04 100 24546 CA 1 8 T0 4642 F A13R25 0698 3161 9 RESISTOR 38 3K 1 125W 0 100 24546 C4 1 8 T0 3832 F A13R26 0757 0447 4 RESISTOR 16 2K 1 125W TC 0 100 24546 4 118 70 1622 A13R27 0757 0442 9 RESISTOR 10K 1 125W TC 04 100 24546 4 1 8 70 1002 A13R28 0757 0418 9 3 RESISTOR 619 1 125W F TC 0 100 24546 C4 1 8 T0 619R F A13R29 1810 0229 5 1 NETWORK RES 8 SIP330 0 OHM X 7 01121 208A331 A13R30 0757 0442 9 RESISTOR 10K 1 125W F TC 0 100 24546 4 1 8 0 1002 A13R31 18100286 4 1 NETWORK RES 16 DIP 10 0K OHM X 15 01121 316A103 A13TP16 1251 5730 7 1 CONNECTOR 15 POST 28480 1251 5730 A13U1 1LJ6 0001 2 1 CMOS 16384 16K STAT RAM 250 NS 3 6 28480 LJ6 0001 1200 0541 1 1 SOCKET 1C 24 D
130. 4 1 8 0 1001 1 8 0 5111 C4 1 8 T0 511R F 4 1 8 10 1001 4 1 8 0 2611 4 1 8 0 2151 4 1 8 0 2151 4 1 8 70 2151 2100 3350 4 1 8 0 1471 C4 1 8 TO 10R0 F 55 1 8 0 21 5 4 118 0 101 C4 1 8 TO 101 F CA4 1 8 TO 10RO F 4 1 8 70 1002 0698 3624 4 1 8 70 5111 42 2 00 10 0 CA 1 8 T0 101 F C4 1 8 T0 1212 F C4 1 8 TO 5111 F 4 1 8 0 2151 1 8 0 1002 4 1 8 70 1002 C4 1 8 T0 316R F C4 1 8 T0 1782 F 4 1 8 0 1002 C4 1 8 TO 111 F 4 1 8 0 2151 4 1 8 1211 change 6 4 ae eS SS ee ee ee Replaceable Parts Reference HP Part Designation Number 0 10847 0698 0084 9 A10R48 0811 3293 0 10 49 8110 0180 9 2314A 2619A A10R50 0698 3154 0 2622A AND ABOVE 10 50 0698 5805 5 A10R51 0757 0416 7 2314A 2517A 10 52 0757 0289 2 2531 AND ABOVE A10R52 0698 3156 2 A10R53 0757 0444 1 2314 702619 10864 0698 3154 0 2622 AND ABOVE AlORE 0698 5805 5 A10R55 0757 0442 9 10856 0757 0289 2 10857 0698 0084 9 A10R58 0757 0280 3 A10R59 0698 3160 8 10 50 07570274 5 A10R61 0757 0401 9 A10R62 0757 0401 0 A10TP1 1251 0600 9 10 2 1251 0600 0 1251 0600 0 4 1251 0600 9 5 1251 0600 0 A10TP6 1251 0600 0 A1OTP7 1251 0600 0 1001 1820 5543 7 1002 1820 5543 7 A10VR1 1902 0680 7 A10VR2 1902
131. 4 1 SHOCK MOUNT BRACKET FRONT 28480 08901 00086 0400 0010 2 4 GROMMET RND 25 IN ID 375 IN GRV OD 28480 0400 0010 2190 0017 4 4 WASHER LK HLCL NO 8 168 IN ID 28480 2190 0017 2580 0002 4 2 NUT HEX OBL CHAM 8 32 THD 085 IN THK 28480 2580 0002 MP37 08901 00079 5 1 SHOCK MOUNT BRACKET REAR 28480 08901 00079 0400 0010 2 GROMMET RND 25 IN ID 375 IN GRV OD 28480 0400 0010 2190 0017 4 WASHER LK HLCL NO 8 168 IN ID 28480 2190 0017 2580 0002 4 NUT HEX OBL CHAM 8 32 THD 085 IN THK 28480 2580 0002 2314A 2449A M P38 08901 20158 3 1 EXTRUSION ASSY LO 28480 08901 20158 0403 0005 1 3 BUMPER FOOT SCR 5 IN MAX OD 188 IN THK 28480 0403 0005 0624 0100 5 SCREW TPG 4 40 5 IN LG PAN HD POZI STL 28480 0624 0100 2190 0756 8 3 WASHER FL MTLC NO 5 13 IN ID 25 IN OD 28480 2190 0756 2505A AND ABOVE MP33 08901 20158 3 1 EXTRUSION ASSY LO 28420 08901 20158 0403 0005 1 3 BUMPER FOOT SCR 5 IN MAX OD 188 IN THK 28480 0403 0005 0624 0653 3111 SCREW 440 1 2 T 10 PNTX 28480 0624 0653 2190 0756 8 3 WASHER FL MTLC NO 5 13 IN ID 25 IN OD 28480 2190 0756 MP39 08901 00099 9 1 SCREEN 28480 08901 00099 MP40 08901 20164 1 1 FRONT WINDOW 28480 08901 20164 MP41 08901 00095 5 1 GASKET EXTRUSION 28480 08901 00095 tes Tode upadste inforination bacieory cebeeted enipeucut Hefer coding S part change 6 170 rev 16 1190 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part nti
132. 4 and 7 divisions peak to peak If faulty see Service Sheet 6 and check the circuits of channel 2 8 Set the oscilloscope gain for a display of 6 divisions peak to peak Increase the signal source frequency until the waveform drops to 3 divisions peak to peak Record the signal source s frequency 9 Decrease the signal source frequency until the waveform rises to 6 divisions peak to peak then drops to 3 divisions peak to peak Note the signal source s frequency T he difference between this frequency and the frequency in step 8 should be as indicated in Table 8D 10 If faulty see Service Sheet 6 and check the First Channel 2 Filter 8D 32 Service Sheet BD3 Model 8901B Service Table 80 10 Bandwidth of First Channel 2 Filter 77 Step 9 Frequency Difference Limits kHz Option Combination kHz 032 and 037 033 and 037 035 and 037 032 and 033 032 and 035 033 and 035 10 Key in 23 1 to switch the LO to external The EXT LO indicator on A55 should go on and the LO input switch should make an audible click If faulty see Service Sheet 6 and check the LO Input Switch S4 Control 77 Channel Filter Check Option Series 030 2642A and Above l Set the signal generator or audio synthesizer to between 454 and 456 kHz CW at 10 dBm 70 7 mVrms into 500 Connect its RF output to A72J2 IF IN on the Measuring Receiver Connect a high impedance ac coupled oscilloscope to A72J1 IF OU
133. 4807 3 4 CAPACITOR FXD 33PF 5 100VDC CER 0 30 28480 0160 4807 A5C31 0160 4397 6 1 CAPACITOR FXD 1UF 1 100VDC POLYSTY 28480 0160 4397 A5C32 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A5C33 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A5C34 0180 0197 8 CAPACITOR FXD 2 2UF 1096 20VDC 56289 150D225X9020A2 A5C35 0160 4805 1 CAPACITOR FXD 47PF 5 100VDC CER 0 30 28480 0160 4805 theter to section 7 for update VFactoty selected Cotuponent Refer to 75 Karate patto haue 6 27 66 Replaceable Parts Reference HP Part Qty Designation Number D ASCA 1901 0040 1 5 2 1901 1098 1 ASCR3 1901 1098 1 ASCR4 1901 1098 1 ASCRS 1901 0518 8 A5CRE6 1901 0040 1 ASCR 1901 0040 1 ASCRS 1901 0518 8 ASCRS 1901 0040 1 ASCR10 1901 0040 1 5 11 1901 1098 1 5 12 1901 0040 1 ASCR13 1901 0040 1 ASCR14 1901 0880 7 9 ASCR15 1901 1098 1 5 16 1901 1098 1 511 91400210 1 8 ASMP1 08901 00019 3 1 2190 0008 3 2360 0113 2 5 1 1854 0810 2 7 502 1853 0020 4 1854 0477 7 A504 1853 0020 4 505 1855 0414 4 2 A5Q6 1853 0020 4 A5Q7 1854 0810 2 ASR1 1810 0126 1 1 ASR2 2100 3358 3 2 ASR3 0698 8549 7 2314 2443 A5R4 0699 0074 9 2 2449 AND ABOVE 6 4 0699 0073 8 ASRS 0757 0288 1 3 A5R6 0698 8549 7 AS5R7 0757 0280 3 ASR8 0698 8731 9 ASR9 0757 0442 9 ASR10 0757 0416 7 5 11 07
134. 5 200VDC CER 0 30 28480 0160 4387 5 12 0180 0374 4 CAPACITOR FXD 10UF 10 20VDC 56289 1500106 902082 5 1 0160 0576 5 CAPACITOR FXD 20 SOVDC CER 28480 0160 0576 5 14 0180 1704 5 1 CAPACITOR FXD 47UF 10 6VDC 56289 1500476 900682 5 15 0180 0374 3 CAPACITOR FXD 10UF 10 20VDC TA 56289 1500106X9020B2 5 16 0160 3879 7 CAPACITOR FXD 010 20 100VDC CER 28480 0160 3879 5 17 0180 0374 3 CAPACITOR FXD 10UF 10 20VDC 56289 150D106X9020B2 5 18 0160 3501 2 CAPACITOR FXD 4UF 10 50VDC MET POLYC 28480 0160 3501 5 19 0160 0970 3 1 CAPACITOR FXD 47UF 10 POLYE 28480 0160 0970 5 20 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 2314A TO 2627A 5 21 0160 3878 6 51 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 5 22 0160 3402 2 3 CAPACITOR FXD 1UF 5 50VDC MET POLYC 28480 0160 3402 5 23 0160 3501 2 CAPACITOR FXD 40 10 50VDC MET POLYC 28480 0160 3501 5 24 0160 3501 2 CAPACITOR FXD 4UF 10 50VDC MET POLYC 28480 0160 3501 5 25 0160 3402 2 CAPACITOR FXD 1UF 5 50VDC MET POLYC 28480 0160 3402 2635A AND ABOVE A5C21 25 NOT ASSIGNED 5 26 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A5C27 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 5 28 0160 0576 5 CAPACITOR FXD 20 5 CER 28480 0160 0526 5 29 0180 2929 8 68UF 10 10VDC TA 28480 0180 2929 A5C30 0160
135. 500R B 54 30 0699 0825 8 1 RESISTOR 281 2 1 125W TC 204 25 28480 0699 0825 AS4R31 SEE A71 A54R32 SEE ASAR33 0757 0274 5 RESISTOR 1 21K 1 125W 0 100 24546 4 1 8 1211 54 0757 0401 0 1 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 0 101 54 835 0698 3154 0 3 RESISTOR 4 22 1 125W TC 04 100 24546 4 1 8 10 4221 7 6 150 fes Selected empenen de vetite change rev IGJUL9O aooo _ en Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C aT Mfr Designation Number D Qty Description Code Mfr Part Number A54 08901 60252 SERIAL PREFIX 2314A TO 2636A OPTION 030 ONLY ASARIS 0757 0394 0 RESISTOR 51 1 1 125W 04 100 24546 C4 1 8 T0 51R1 F A5AR37 0698 0084 9 RESISTOR 2 15K 1 125W F TC 0 100 24546 C4 1 8 TO 2151 F A54R38 0698 3441 8 RESISTOR 215 1 125W TC 04 100 24546 CA 1 8 TO 215R F A54R39 07570444 1 RESISTOR 12 1K 196 125W TC 0 100 24546 C4 1 8 T0 1212 F A5ARAQ 0757 0465 6 5 RESISTOR 100K 1 125W TC 04 100 24546 4 1 8 0 1003 A54R41 0698 3154 9 RESISTOR 4 22K 1 125W TC 204 100 24546 4 1 8 0 4221 54 42 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 AS4R43 0698 0084 9 RESISTOR 2 15 1 125W TC 0 100 245
136. 7 1 125W TC 0 100 T actors ceaeetead t C Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 04713 28480 28480 04713 28480 28480 28480 24546 24546 24556 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 25546 24546 24546 24546 24546 24546 03888 tet Replaceable Parts Mfr Part Number 1854 0019 1854 0071 1854 0071 1854 0071 1854 0071 1854 0071 1854 0071 1853 0020 1854 0071 1853 0034 2 2222 1854 0071 1853 0034 2N2222A 1854 0071 1853 0020 1854 0071 C4 1 8 T0 10R0 F C4 1 8 T0 511R F 4 1 8 0 101 C4 1 8 T0 316R F 4 1 8 0 5111 4 1 8 1961 4 1 8 0 3481 4 1 8 0 5701 4 1 8 10 3831 4 1 8 0 2371 4 1 8 0 5111 4 1 8 0 2610 4 1 8 0 2151 4 1 8 70 1001 4 1 8 0 2151 C4 1 8 T0 215R F 4 1 8 0 2151 4 1 8 0 2372 C4 1 6 T0 2372 F C4 1 8 TO 3241 F 4 1 8 0 3241 4 1 8 0 1002 4 1 8 0 1622 C4 1 8 T0 1001 F C4 1 8 TO 1961 F C4 1 8 TO 1961 F C4 1 8 TO 1961 F 4 1 8 1961 4 1 8 0 1003 PMESS5 1 8 TO 23R7 F A part change 6 133 a o a AN Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C nti Mfr Designation Number
137. 8 1211 So Errata bange rev 16 71 90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q inti Mfr ty Description Mfr Part Number Designation Number 0 y Code ASSR31 0698 344 1 8 RESISTOR 215 1 125W F TC 0 100 24546 4 1 8 0 215 55 32 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 A55R33 0698 0084 9 RESISTOR 2 15 1 125W TC 0 100 24546 C4 1 8 T0 2151 F A55R34 0757 0274 5 RESISTOR 1 21K 1 125W TC 0 100 24546 4 1 8 1211 ASSH35 0698 3443 9 RESISTOR 287 1 125W TC 0 100 24546 4 18 10 2878 ASSR36 0698 3443 0 RESISTOR 287 1 125W TC 04 100 24546 C4 1 8 T0 287R F AS5R37 0698 3443 0 RESISTOR 287 1 125W TC 0 100 24546 C4 1 8 T0 287R F ASSR38 0757 0400 9 RESISTOR 90 9 199 125W F TC 0 4 100 24546 4 118 70 9089 ASSR39 0757 0400 9 RESISTOR 90 9 1 125W TC 0 100 24546 4 1 8 0 90 9 AS5R40 0757 0280 3 RESISTOR 1K 1 125W F TC 0 100 24546 4 1 8 0 1001 ASSR41 0757 0280 3 RESISTOR 1K 1 125W TC 2 04 100 24546 C4 118 T0 1001 F 55 42 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 AS5SR43 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 55944 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F ASST 1 08901 80070 4 TRANSFORMER FLTR 28480 08901 80070 5501 1826 0154 8 IC SWITCH
138. 8 SIP220 0 OHM X 7 NETWORK RES 8 SIP220 0 OHM X 7 NETWORK RES 8 SIP220 0 OHM X 7 NETWORK RES 8 SIP220 0 OHM X 7 NETWORK RES 8 SIP220 0 OHM X 7 NETWORK RES 8 SIP220 0 OHM X 7 RESISTOR 147 1 125W TC 0 100 NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED RESISTOR 147 1 125W TC 204 100 NETWORK RES 8 SIP220 0 OHM X 7 PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT PUSHBUTTON SWITCH P C MOUNT Mfr Code 24546 26546 24546 24546 24546 24546 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 01121 24546 24546 01121 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 Factory selected Component to Section h Model 8901B Mfr Part Number 4 1 8 0 2152 C4 1 8 T0 4640 F C4 1 8 T0 1963 F C4 1 8 T0 6812 F 4 1 8 0 6812
139. 8 TO 162R F 55 13 0698 3443 0 RESISTOR 287 1 125W TC 204 100 24546 C4 1 8 T0 287R F A55R146 0757 0274 5 RESISTOR 1 21 1 125W TC 04 100 24546 4 1 8 1211 A55R15 0757 0405 4 RESISTOR 162 1 125W TC 0 100 24546 4 1 8 0 1628 55 16 0698 0082 7 RESISTOR 464 1 1252 TC 04 100 24546 C4 1 8 T0 4640 F A55R17 0698 3443 0 RESISTOR 287 1 125W TC 0 100 24546 C4 1 8 T0 287R F A55R18 0698 3443 0 RESISTOR 287 1 125W TC 0 100 24546 C4 1 8 T0 287R F A55R19 0757 1094 9 RESISTOR 1 47K 1 125W TC w0 100 24546 4 1 8 0 1471 AS55R20 0698 3443 0 RESISTOR 287 1 125W 0 100 24546 C4 1 8 T0 287R F 55 21 0757 1094 9 RESISTOR 1 47 1 125W 0 100 24546 C4 1 8 T0 1471 F A55R22 0698 3441 8 RESISTOR 215 1 125W F TC 0 100 24546 C4 1 8 T0 215R F A55R23 0698 344 1 8 RESISTOR 215 196 125W TC Q 100 24546 C4 1 8 T0 215R F 55 24 0699 0678 9 RESISTOR 900 01 0 5 28480 0699 0678 55 25 0689 0581 4 RESISTOR 100 01 1W TC 04 5 28480 0699 0681 AS55R26 0757 0274 5 RESISTOR 1 21K 1 125W TC 0 100 24546 CA 1 8 TO 121 1 F A55R27 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F A55R28 06980084 9 RESISTOR 2 15 1 125W 0 100 24546 4 1 8 0 2151 55 29 06980082 7 RESISTOR 464 146 125 TC 04 100 24546 4 1 8 70 4640 A55R30 0757 0274 5 RESISTOR 1 21K 1 125W TC 0 100 24546 4 1
140. ANLG DUAL TO 100 PKG 17856 DG200BA 5502 1820 0535 7 DRVR TTL AND DUAL 2 INP 01295 SN75451BP AS5U3 1820 1216 3 TTL LS 3 TO8 LINE 3 INP 01295 SN74LS138N ASSUA 1820 1195 7 IC FF TTL LS D TYPE POS EDGE TRIG COM 01295 SN74LS175N 5505 1826 0043 4 AMP GP 99 PKG 3L585 CA307T pedes section Non cedected Coimpenuent i to section S Briata change 16 701 90 6 1 5 5 Lo 2 2 2 27 00 0 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Qty inti Mfr Designation Number D Description Mfr Part Number Code 71 08902 60109 SERIAL PREFIX 2642A AND ABOVE OPTION 030 ONLY A71 08902 60109 9 1 IF AMPLIFIERVDETECTOR ASSEMBLY 28480 08902 60109 OPTION 030 ONLY A71C1 0180 0116 1 4 CAPACITOR FXD 6 8UF 10 35VDC TA 56289 150D685X9035B2 A71C2 01800197 8 1 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 A71C3 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 1500685 903582 A71C4 0160 4832 4 14 CAPACITOR FXD O1UF 10 100VDC CER 28480 0160 4832 71 5 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A71C6 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 04604835 A71C7 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A71C8 0160 4797 0 6 CAPACITOR FXD 3 3PF 25 100VDC CER 28480 0160 4797 A71C9 0160 4835 7 CAPACITOR FXD 1UF 10
141. ASORS ASOR10 ASOR 11 AS5SOR12 A50R13 ASOR14 A5OR15 A50R16 5 17 ASOR18 A50R19 ASOR20 ASOR21 A50R22 ASOR23 50824 A50R25 ASOR26 ASOR27 A50R28 50 29 A50R30 eslit rev 16 14UL90 HP Part Number 1854 0019 1854 0071 1854 0071 1854 0071 1854 0071 1854 0071 1854 0071 1853 0020 1854 0071 1853 0034 1854 0477 1854 0071 1853 0034 1854 0477 1854 0071 1853 0020 1854 0071 0757 0346 0757 0416 0757 0401 0698 3444 0757 0438 0698 0083 0698 3152 0698 5465 0698 3153 0698 3150 0757 0438 0698 3132 0698 0084 0757 0280 0698 0084 0698 3441 0698 0084 0698 3158 0698 3158 0698 4439 0698 4439 0757 0442 0757 0447 075740280 0698 0083 0698 0083 0698 0083 0698 0083 0757 0465 0698 3431 Ow ON amp aN NN NN Cow amp oh bh o b 0 CO Qty ode cq eda te tion Table 6 3 Replaceable Parts Description TRANSISTOR NPN SI 18 PD 360MW TRANSISTOR NPN SI PD 300MW 200MHZ TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR NPN 51 PD 300MW FT 200MHZ TRANSISTOR NPN 5 PD FT 200MHZ TRANSISTOR PNP SI PD 300MW 150 2 TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR PNP SI 18 PD 360MW TRANSISTOR NPN 2N2222A 1 18 PD 500MW
142. C D Mfr escription Mfr Part Number Designation Number y P Code 2314A TO 2531A A15C9 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 16 10 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 26480 0160 3878 15 11 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 2544A AND ABOVE 16 9 0160 4832 4 CAPACITOR FXD 01JF 20 100VDC CER 28480 0160 4832 16 10 0160 4822 2 CAPACITOR FXD 1000PF 5 100VDC CER 28480 0160 4822 15 11 0160 4822 2 CAPACITOR FXD 1000PF 4 596 100VDC CER 28480 0160 4822 A15C12 0160 4502 5 1 CAPACITOR FXD 390PF 5 100VDC CER 28480 0160 4502 2314A TO 2414A 16 13 9160 4768 5 2 CAPACITOR FXD 470PF 5 100VDC CER 28480 0160 4768 2422A AND ABOVE 15 13 0160 4062 2 CAPACITOR FXD 470PF 10 SOVDC CER 28480 0160 4062 15 14 0160 4768 5 CAPACITOR FXD 470PF 5 100VDC CER 28480 0160 4768 2314A TO 2531 15 15 0160 3879 7 CAPACITOR FXD O1UF 20 100VDC CER 28480 0160 3879 A15C16 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC 28480 0160 3878 15 17 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 16 18 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A15CI9 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A15C20 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 2544 AND ABOVE 16 15 0160 4832 4 CAPACITOR FXD 010 10 100VDC CER 28480 0160 4832 16 16 0160 4822 2 CAPACITOR FXD 10
143. C3 1 8 TO 100R F A20R10 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A20R11 0698 7260 7 RESISTOR 10K 1 05W 0 100 24546 C3 1 8 T0 1002 F to sectran F fot informaron Component 10 section S Do part change 6 92 rev 16J UL90 2 ba ser tron rev 6 171 90 fos elected c Ya e barn E Eriata Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part E Mir Designation Number D Qty Description Code Mfr Part Number A20 08901 60185 SERIAL PREFIX 2315A TO 2622A AZOR 12 0698 7260 7 RESISTOR 10K 1 05W TC 204 100 24546 C3 1 8 T0 1002 F A20R13 0698 7260 7 RESISTOR 10K 1 OSW TC 0 100 24546 C3 1 8 T0 1002 F A20R14 0698 7279 8 1 RESISTOR 61 9K 1 05 0 100 24546 C3 1 8 T0 6192 F A20R15 0698 7260 7 RESISTOR 10K 1 OSW TC 0 100 24546 C3 1 8 T0 1002 F A20R16 NOT ASSIGNED A20R17 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 C3 1 8 T6 1001 F A20R18 0698 7236 7 RESISTOR 1K 1 O5W F TC 0 100 24546 C3 1 8 T0 1001 F 2314A 2348A A20RI9 0698 7267 4 1 RESISTOR 19 6K 1 05W TC 0 100 24546 3 1 8 0 1962 A20R20 0698 7259 4 3 RESISTOR 9 09K 1 OSW TC 0 100 24546 C3 1 8 TO0 9091 F A20R21 0698 7251 6 RESISTOR 4 22K 1 OSW TC 0 100 24546 3 1 8 0 4221 A20R22
144. C3 1 8 TO 9091 F A20R32 0698 7284 5 5 RESISTOR 100K 1 OSW 0 100 24546 C3 1 8 TO 1003 F A20R33 0698 7236 7 RESISTOR 1K 1 05W TC 0 4 100 24546 C3 1 8 T0 1001 F A20R34 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 3 1 8 0 1001 A20R35 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 3 1 8 70 1001 A20R36 0698 7236 7 RESISTOR 1K 1 05W 0 100 24546 C3 1 8 T0 1001 F A20R37 0698 7288 9 3 RESISTOR 147K 1 OSW F TC 0 100 24546 C3 1 8 TO 1473 F A20R38 0698 7236 7 RESISTOR 1K 1 05W 0 100 24546 C3 1 8 T0 1001 F A2Z0R39 0698 7284 5 RESISTOR 100K 1 OSW 0 100 24546 C3 1 8 T0 1003 F A20R40 0698 7243 6 RESISTOR 1 96K 1 OSW TC 04 100 24546 C3 1 8 T0 1961 F A20R41 0698 7260 7 RESISTOR 10K 1 OSW TC 04 100 24546 C3 1 8 T0 1002 F A20R42 0698 7260 7 RESISTOR 10K 1 OSW O 100 24546 C3 1 8 T0 1002 F A20R43 0757 0279 0 RESISTOR 3 16K 1 125W 0 100 24546 4 1 8 70 3161 A20R44 0698 7260 7 RESISTOR 10K 1 OSW TC 100 24546 C3 1 8 T0 1002 F AZOR4S 0698 7288 9 RESISTOR 147K 1 OSW TC 0 100 24546 C3 1 8 T0 1473 F A20R46 0698 7275 4 RESISTOR 42 2K 1 05W TC 0 100 24546 C3 1 8 T0 4222 F ehange 6 93 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts 6 94 Reference HP Part mt Mfr Designation Number D Qty Description Mfr Part Number A20 08901 60185 SERIAL PREFIX 2315A 2622A A20R47
145. CAPACITOR FXD 1UF 5 100VDC MET POLYC 28480 20 19 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 A20C20 0380 1997 8 1 CAPACITOR FXD 20UF 50 10 150VDC AL 28480 A20C21 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 A20C22 0160 4822 2 2 CAPACITOR FXD 1000PF 5 100 0 CER 28480 A20C23 0160 4822 2 CAPACITOR FXD 1000PF 4 596 100VDC CER 28480 A20C24 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 A20CR1 1901 1085 6 2 DIODE SM SIG SCHOTTKY 28480 A20CR2 1901 1085 6 DIODE SM SIG SCHOTTKY 28480 A20CR3 NOT ASSIGNED A20CR4 NOT ASSIGNED A20CR5 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 A20CR6 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 A20CR7 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 A20CR8 1901 1098 1 DIODE SWITCHING 1 4150 50V 200 4 5 9 171 A20CR9 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 A20CR10 1901 0518 8 6 DIODE SM SIG SCHOTTKY 28480 A20CR11 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 A20CR12 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 A20CR13 1901 1098 1 DIODE SWITCHING 1N4150 50V 200 4NS 9N171 A20CR14 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9 171 A20CR15 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 A20CR16 1901 1098 1 DIODE SWITCHING 1 4150 5 200 4NS 9 171 A20CR17 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 A20CR18 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 20 19 3901 0518 8 DIODE SM SIG SCHOTTKY 28480 A20CR20 1901 1098
146. CAPACITOR FXD 2 2UF 10 50VDC TA 25088 D2R2GS1B50K 50 28 0160 3691 1 1 CAPACITOR FXD 75 1 100VDC MICA 28480 0160 3691 50 29 0180 2619 3 CAPACITOR FXD 22UF 10 15VDC TA 25088 D22GS1B15K A50C30 0160 2199 2 CAPACITOR FXD 30PF 5 300VDC MICA 28480 0160 2199 50 31 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A50C32 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC 28480 0160 3459 A50C33 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 5 4 0160 2414 4 1 CAPACITOR FXD 022UF 5 200VDC POLYE 28480 0160 2414 50 35 0180 2620 6 CAPACITOR FXO 2 2UF 10 50VDC 25088 O2R2GS1850K A50C36 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 AS0C37 0180 2620 6 CAPACITOR FXD 2 2UF 10 SOVDC 25088 02 26 1850 50 38 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 39 0180 2639 3 CAPACITOR FXD 22UF 10 15VDC 25088 D22GS1B15K 50 40 0160 3459 9 02UF 20 100VDC CER 28480 0160 3459 A50C41 0180 2620 6 CAPACITOR FXD 2 2UF 10 50VDC 25088 D2R26S1850K 50 42 0160 2199 2 5 300VDC MICA 28480 0160 2199 50 43 0180 2620 6 CAPACITOR FXD 2 2UF 10 SOVDC 25088 D2R2GS1B50K 50 44 0160 0127 2 1 CAPACITOR FXD 1UF 20 25 CER 28480 01600127 A50C45 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 tlie ler bj Tea lien 7 rev 16JUL90
147. CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 GAPACITOR FXD 01UF 80 2096 100VDC CER 28480 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 80 20 100VOC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 02UF 1 200VDC 28480 CAPACITOR FXD 1200PF 1 100VDC MICA 28480 CAPACITOR FXD 2000PF 1 300VDC MICA 72136 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 010 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC CER 28480 CAPACITOR FXD 2000PF 199 300VDC MICA 72136 Factory Selected Component Refer ta Section 51 Replaceable Parts Mfr Part Number 08901 60009 30D506G025CC2 30D506G025CC2 0180 2929 0160 3858 0160 5340 0160 4613 0160 3858 0160 5340 0160 4613 0160 2055 0160 2055 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 2055 0160 3879 0160 2055 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 6606 0160 4317
148. CONNECTOR RF BNC FEM SGL HOLE FR 50 OHM OUTPUT AM WASHER LK INTL T 3 8 IN 377 IN4D NUT HEX DBL CHAM 3 8 32 THD 0941N THK CONNECTOR RF FEM SGL HOLE FR 50 OHM OUTPUT FM WASHER LK INTL T 3 8 IN 377 IN ID NUT HEX DBL CHAM 3 8 32 THD 094 IN THK CONNECTOR RF BNC FEM SGL HOLE FR 50 OHM OUTPUT RECORDER WASHER LK INTL 3 8 IN 3774N ID NUT HEX DBL CHAM 3 8 32 THD 094 IN THK OUTPUT IF P O W26 NSR TIME BASE 10 MHZ OUTPUT P O W22 NSR OPTION 002 ONLY TIME BASE 10 MHZ INPUT P O W23 NSR OPTION 002 ONLY ADAPTER COAX STR F SMA AM FM CAL OUTPUT REAR OPTION 001 ONLY INCLUDES ATTACHING HARDWARE ADAPTER COAX STR F N F SMA CALIBRATION OUTPUT RF POWER OPTION 001 ONLY INCLUDES ATTACHING HARDWARE ADAPTER COAX STR F N F SMA CALIBRATION OUTPUT RF POWER OPTION 001 ONLY ADAPTER COAX STR F SMA LO OUTPUT REAR OPTION 003 ONLY INCLUDES ATTACHING HARDWARE eater Selected Coinponent 10 section Mfr Code 28480 28480 28480 28480 00000 28480 28480 00000 28480 28480 00000 28480 28480 28480 28480 as 2 Model 8901B Mfr Part Number 1250 1811 1251 1895 1250 0083 2190 0016 ORDER BY DESCRIPTION 1250 0083 2190 0016 ORDER BY DESCRIPTION 1250 0083 2190 0016 ORDER BY DESCRIPTION 1250 1811 1250 1811 1251 1895 1250 1811 gt port eheoruge 16 21 90
149. Center Mountain View California Ask your nearest HP office for information and forms for the Direct Order System Replaceable Parts List Updating Manual Updates A MANUAL UPDATES packet is shipped with the manual when necessary to provide the most current information available at the time of shipment These packets consist of replacement and addition pages which should be incorporated into the manual to bring it up to date Hewlett Packard offers a Documentation Update Service that will provide you with further updates as they become available If you operate or service instruments of different serial prefixes we strongly recommend that you join this service immediately to ensure that you manual is kept current For more information refer to the Documentation Update Service reply card included in this manal or call Technical Writing Department 509 922 4001 or write Hewlett Packard Company Technical Writing Department 24001 Mission TAF C 34 Spokane WA 99220 6 4 MECHANICAL AND CHASSIS PART LOCATIONS AND REFERENCE DESIGNATIONS Most mechanical parts are identified in Figures 6 1 to 6 9 These figures are located at the end of this section Major mechanical parts have reference designations that begin with the letters MP To find the part number and description of a mechanical part find the part in one of the photographs or drawings and then look up the reference designation in Table 6 3 Mechanical hardware
150. DIP 3L585 CA3146E 4012 1853 0007 7 TRANSISTOR PNP 2483251 SI 18 PD 360MW 04713 2N3251 4013 1853 0007 7 TRANSISTOR PNP 2N3251 Si TO 18 PD 360MW 04713 2 3251 4014 1854 0210 6 TRANSISTOR NPN 2N2222 SI TO 18 PD SOOMW 04713 2 2222 A4Q15 1854 0210 6 TRANSISTOR NPN 2N2222 SI TO 18 PD 500MW 04713 2N2222 A4Q16 1854 0071 TRANSISTOR NPN S PD 300MW FT 200 2 28480 1854 0071 4017 1853 0007 7 TRANSISTOR PNP 233251 SI 18 PD 360MW 04713 2N3251 4018 1854 0475 5 TRANSISTOR DUAL NPN PD 750MW 28480 18540475 4019 1858 0032 8 TRANSISTOR ARRAY 14 PLSTC DIP 3L585 146 4020 1854 0071 7 TRANSISTOR NPN SI PD 300MW FT 200MHZ 28480 1854 0071 4021 1855 0020 8 4 TRANSISTOR J FET N CHAN TO 18 SI 28480 1855 0020 4022 1855 0049 1 2 TRANSISTOR JFET DUAL N CHAN Si 28480 1855 0049 4023 1856 0637 1 6 TRANSISTOR NPN 2N2219A 5 PD 800MW 01295 2 2219 1209 0173 5 19 INSULATOR XSTR DAP GL 28480 1200 0173 4024 1854 0071 7 TRANSISTOR NPN SI PD 300MW FT 200MHZ 28480 1854 0071 4025 1853 0007 7 TRANSISTOR PNP 2N3251 SI TO 18 360MW 04713 2N3251 4026 1854 0637 1 TRANSISTOR NPN 2N2219A SI TO 5 PD 800MW 01295 2N2219A 1200 0173 5 INSULAT OR XSTR DAP GL 28480 1200 0173 4027 1854 0071 7 TRANSISTOR NPN 300MW FT 200MHZ 28480 1854 0071 4028 1854 0637 1 TRANSISTOR NPN 2N2219A SI 5 PD 800MW 01295 2N2219A 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200
151. FXD 1UF 20 50VDC CER 28480 0160 0576 A1C13 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 14 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 1 15 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A1C16 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A1C17 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 1 18 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A1C19 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 AICRi 1901 1098 1 71 DIODE SWITCHING 1N4150 50 200MA 4NS 9 171 1NA150 A1CR2 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A1CR4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A1DS1 1990 0759 6 4 LED LIGHT BAR MODULE LUM INT 3MCD 28480 2620 1200 0423 8 4 SOCKET IC 16 CONT DIP DIP SLOR 28480 1200 0423 1052 1990 0759 6 LED LIGHT BAR MODULE LUM INT 3MCD 28480 HLMP 2620 12000423 8 SOCKET IC 16 CONT DIP DIP SLDR 28480 1200 0423 A1DS3 1990 1273 1 28 LEO LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 1054 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 A1DS5 1990 1273 1 LED LAMP RED LUM INT 8 6MCD 5V 01542 QLMP 1613 A1DS6 1990 1273 1 LED LAMP RED LUM INT 8 5MCD BVA 5 01542 QLMP 1613 A1DS7 1990 1273 1 LED LAMP RED LUM INT a 8 6MCD 5V 01542 QLMP 1613 1058 1990 127
152. FXD 1UF 10 SOVDC CER 28480 01604535 55 18 0160 4832 4 CAPACITOR FXD 01UF 109 100VDC CER 28480 01604832 55 19 0160 4235 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 ASSC20 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 55 21 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 55 22 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 55 23 0160 4797 0 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 55 24 0160 4797 9 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 55 1 1901 1098 1 6 DIODE SWITCHING 1N4150 SOV 200MA 4NS 9N171 1N4150 55 2 1901 1038 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N amp 150 55 1901 1098 1 DIODE SWITCHING 1 415850 50V 200MA 4NS 9N171 1N4150 ASSCRA4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 55 5 1901 1098 1 DIODE SWITCHING 1 4150 50V 200 4 5 9 171 1 4150 55 1901 1098 1 DIODE SWITCHING 1 415850 50V 200MA 4 5 9 171 1 4 159 55 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 55061 1990 0717 6 1 LED LAMP LUM INT 800UCD IF 28480 HLMP 1501 55 1 9170 0847 3 2 CORE SHIELDING BEAD 02114 56 590 65 3B 55 2 9170 0847 3 CORE SHIELDING BEAD 02114 56 590 65 3 A55J1 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 55
153. FXD 2 2UF 10 20VDC 6289 150D225X9020A2 17 9 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 17 10 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C11 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 A17C12 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 17 13 0160 4497 7 1 CAPACITOR FXD 82PF 5 200VDC CER 04 30 28480 0160 4497 A17C14 0160 4652 6 1 CAPACITOR FXD 960 1 500VDC MICA 00853 ADM 19F961F5C 17 15 0160 4647 9 1 CAPACITOR FXD 154PF 1 500VDC MICA 28480 0160 4647 A17C16 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C17 0160 4646 8 1 444PF 1 500VDC MICA 28480 0160 4646 17 18 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C19 0160 4387 4 CAPACITOR FXD 47PF 5 200VDC CER 0 30 28480 0160 4387 A17C20 0160 4641 3 1 CAPACITOR FXD 3520PF 1 SOVDC 28480 0160 4641 17 21 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C22 0160 4651 5 1 CAPACITOR FXD 817PF 1 500VDC MICA 00853 RDM19F 817 F5C A17C23 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C24 0180 0376 5 CAPACITOR FXD 47UF 10 35VDC TA 56289 150D474X9035A2 A17C25 0160 4387 4 CAPACITOR FXD 47PF 5 200VDC CER 0 30 28480 0169 4387 17 26 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C27 08901 00064 8 1 STRAPICAPACITOR 28480 08901 00064 2
154. LUM ANT 800UCD IF LED LAMP RED LUM INT 1MCD IF 13MA MAX LED LAMP YLW LUM INT 1MCD IF 20MA MAX LEO LAMP YLW LUMANT 1MCD IF 20MA MAX LED LAMP YLW LUM INT 1MCD IF 20MA MAX LED LAMP YLW LUM INT 1MCD IF 20MA MAX LED LAMP YLW LUM INT 1 IF 20MA MAX LED LAMP GRN LUM INT 6MCD IF LEO LAMP RED LUM INT 8 6 BVR 5V LED LAMP RED LUM INT 8 6 5V LED LAMP RED LUM INT 8 6 BVR 5V LED LAMP RED LUM INT 8 6 BVR 5V LED LAMP RED LUM INT 8 6MCD BVR 5V LEO LAMP RED LUM INT 1MCD IF 13MA MAX LED LAMP RED LUM INT IMCD IF 13MA LEO LAMP RED LUM INT 1MCD IF 13MA MAX LED LAMP GRN LUM INT 800UCD IF 30MA MAX LED LAMP RED LUM INT 8 6 BVR 5V LED LAMP RED LUM INT 8 6MCD BVA 5V LED LAMP RED LUM INT 8 6MCD BVR 5V LED LAMP GRN LUM INT 6 IF MAX LED LIGHT BAR MODULE LUM INT 7MCD SOCKET STRP 8 CONT W WRAP CONNECTOR 6 PIN M POST TYPE SOCKET C 16 CONT DiP SLDR Ractors Selected Component Refer to Mfr Code 01542 01542 01542 01542 01542 01542 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 01542 28480 28480 28480 28480 28480 28480 28480 28480 01542 01542 01542 28480 28480 28480 28480 28480 55 Model 8901B Mfr Part Number QLMP 1613 QLMP 1613 QLMP 1613 QLMP 1613
155. MLD 100UH 5 166DX 385LG 28480 9140 0210 A23L6 9140 0210 1 INDUCTOR RF CH MLD 100UH 5 166DX 385LG 28480 9140 0210 A23L7 L9 PART OF ETCHED CIRCUIT BOARD A23L10 9100 2250 9 2 INDUCTOR RF CH MLD 180NH 10 105DX 26LG 28480 9100 2250 23111 9100 2250 9 INDUCTOR RF CH MLD 180NH 10 105DX 26LG 28480 9100 2250 A23L12 PART OF ETCHED CIRCUIT BOARD A23L13 PART OF ETCHED CIRCUIT BOARD A23L14 9140 0144 0 3 INDUCTOR RF CH MLD 4 7UH 10 105DX 26LG 28480 9140 0144 A23L15 9140 0144 0 INDUCTOR RF CH MLD 4 7UH 10 105DX 26LG 28480 9140 0144 A23L16 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A23MP1 08901 00024 0 1 COVER SAMP 28480 08901 00024 2360 0113 2 SCREW MACH 6 32 25 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION A23MP2 5001 0176 0 GROUND STRAP 28480 5001 0176 A23MP3 5001 0176 0 GROUND STRAP 28480 5001 0176 tbarteins 4 osmpeneni Meter zZectien part 6 108 tor rev 16 7071 90 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Mfr Designation Number D Qty Description Code Mfr Part Number 2314A TO 24 13A A23M P4 08662 00040 0 SHIELD COMP SMALL 28480 08662 00040 A23M P6 08662 00038 6 SHIELD CKT SM 28480 08662 00038 2414 AND ABOVE A23M P4 NOT ASSIGNED A23MP5 NOT ASSIGNED A23Q1 1854 0247 9 TRANSISTOR NPN SI TO 39 PD 1W FT 800MHZ 28480 1854 0247 2302 1854 0247 9 TRANSISTOR NPN SI 3
156. Mfr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS 2314A TO 2449A MP42 08901 20219 7 1 EXTRUSION ASSY AUD FRONT 28480 08901 20219 0624 0100 5 SCREW TPG 4 40 54IN LG PAN HD POZ STL 28480 0624 0100 2505A TO 2608A M P42 08901 20219 7 1 EXTRUSION ASSY AUD FRONT 28480 08901 20219 0624 0653 3 111 SCREW 440 1 2 T 10 28480 06240653 2619 AND ABOVE M P42 08901 20278 8 1 EXTRUSION ASSY AUD FRONT 28480 08901 20278 0624 0653 3 111 SCREW 440X1 2 TAPTITE T 10 PNTX 28480 0624 0653 2314 2426 43 08901 20161 8 1 EXTRUSION ASSY AUD REAR 28480 08901 20161 2428A TO 2449A M P43 08901 20253 5 EXTRUSION ASSY AUD REAR 28480 08901 20259 2505A TO 2608A M P43 08901 20259 5 EXTRUSION ASSY AUD REAR 28480 08901 20259 06240653 3 111 SCREW 440 1 2 TAPTITE 10 28480 0624 0653 0624 0100 5 SCREW TPG 4 40 5 IN LG PAN HD POZI STL 28480 06240100 2619A AND ABOVE MP43 08901 20279 9 EXTRUSION ASSY AUD REAR 28480 08901 20279 2360 0115 4 SCREW MACH 6 32 312 IN LG PN HO POZI 00000 ORDER BY DESCRIPTION 2314 TO 2635A M P44 08901 20155 0 1 EXTRUSION ASSY DIGTL 28480 08901 20155 2636A AND ABOVE MP44 08902 20054 9 1 EXTRUSION ASSY DIGTL 28480 08902 20054 2360 0115 4 SCREW MACH 6 32 312 IN LG PN HD POZI 00000 ORDER BY DESCRIPTION MP45 NOT ASSIGNED 2314A 2635A MP46 08901 00121 8 1 OSCILLATOR MOUNTING PLATE 28480 08901 00121 0360 0272 2 1 TERMINAL SLDOR LUG LK MTG 4 28480 0360 0
157. NUT HEX DBL CHAM 10 32 THD 067 IN THK INDUCTOR RF CH MLD 4 7UH 1095 INDUCTOR RF CH MLD 1 2UH 596 INDUCTOR RF CH MLD 10UH 2 312DX 969LG INDUCTOR RF CH MLD 4 7UH 10 INDUCTOR RF CH MLD 1 2UH 1096 INDUCTOR RF CH MLD 6 8UH 296 312DX 969LG INDUCTOR RF CH MLD 1 5UH 1096 INDUCTOR RF CH MLD 2 7UH 10 INDUCTOR RF CH MLD 1 5UH 1096 INDUCTOR RF CH MLD 4 7UH 1096 COVER LF VCXO SCREW MACH 6 32 25 IN LG 21 GROUND STRAP GROUND STRAP TRANSISTOR NPN 2 2222 1 18 PD SOOMW TRANSISTOR PNP 2 2904 51 39 PD 600MW INSULATOR XSTR DAP GL TRANSISTOR NPN SI TO46 800MHZ TRANSISTOR NPN SI TO 46 FT 800MHZ TRANSISTOR NPN SI TO 39 PD 1W 800MHZ TRANSISTOR NPN SI 39 PD 1W FT 800 2 TRANSISTOR NPN SI TO 46 FT 800MHZ TRANSISTOR NPN SI 46 800MHZ TRANSISTOR PNP St TO 39 PD 600MW INSULATOR XSTR DAP GL RESISTOR 100 1 125W F TC 0 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 909 196 125W TC 0 4 100 RESISTOR 1K 196 125W TC 0 100 RESISTOR 4 64 1 125W TC 0 100 RESISTOR 6 81K 1 125W 0 100 RESISTOR 21 5 1 125W 0 100 RESISTOR 4 64 1 125W TC 0 100 RESISTOR 6 81K 1 125W TC 0 100 RESISTOR 21 5 1 125W TC 0 100 Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 06560 28480 28480 06560 28480 28480 28480 28480 28480 00000 28480
158. PEAK _ BUFFER Q DETECTOR AMPLIFIER FROM RAMP l SWITCH CALIBRATOR GENERATOR VOL TAGE TPT 6 Be 802 RF PWR SENSOR TYPE AS OUT FROM POWER 0 1 805 METER TP2 FROM COUNTER REF l 2 LEVEL DROM RF i TOR s RECORDER OPTION 030 SERIES ONLY N OUTPUT IF LEVEL PRE RMS OUTPUT FROM IF AMPLIFLIER at um DETECTOR 5 i DECODER AND Lo ER INSTRUMENT PARITY BUS TO FROM CONTROLLER 805 14 Ad CDM CC REG 15 gt AUDIO DE EMPHASIS AND OUTPUT ASSEMBLY Du voc ue poy a ee EEG et Peep 25 AUDIO DE EMPHSIS MOTHERBOARD 50 Hz HIGH HIGH PASS T50 us ASSEMBLY PASS FILTER FILTER DE EMPHASIS PHASE SWITCHING MODULATION SWITCHING s oTo OUTPUT Ji A AMPLIFIERS TP4 1 W29 FLTR T5 us an 914 300 Hz HIGH 3 kHz LOW OW PASS PASS FILTER PASS FILTER C T c6 2 SWITCHING MOD PRE D o s INVERTING 1 7 TECTOR 25 us OT AMPLIFIER DE EM rS OUT D i DE EM CASE rron 2 AUDIO INTEGRATOR OVERVOL TAGE STATUS ABSOLUTE DETECTOR TPS BD
159. POWER OUTPUT connector which outputs a calibrated 1 mW signal from the 50 MHz Power Reference Oscillator If desired a calibration factor can be stored and used to correct subsequent power readings as explained in the Detailed Operating Instructions in Section 3 RF Input The Modulation Analyzer measures RF signals in the frequency range from 150 kHz to 1300 MHz and power levels of 25 to 30 dBm into its 50 ohm input The voltage sensed at the input by the RF Level Detector is used to help set the proper input attenuation and if the input exceeds 1W to trip the Overpower Protection relay When RF Level Special Function 35 is selected the Voltmeter reads the output from the RF Level Detector The controller converts the output the Voltmeter into power in watts The 5 25 MHz High Pass Filter is manually selectable Since the IF will generally respond to signals 2 5 MHz and below the filter eliminates any low frequencies which may be present on the input For signals in the range of 150 kHz to 10 MHz the filter should be switched out The Input Attenuator is set to provide the Input Mixer with an optimum input level The attenuator pads are set by the Controller which receives signal level information from the RF and IF level detectors via the Voltmeter Input Mixer and IF The Input Mixer down converts the RF input to the intermediate frequency IF The IF frequency is normally the frequency of the LO minus the frequency of
160. RESISTOR 46 4 1 05W TC 0 100 24546 C3 1 8 TO A6R4 F A17R20 0757 0799 9 1 RESISTOR 121 1 5W TC 0 100 28480 0757 0799 A17P21 0698 0085 0 RESISTOR 2 61 1 125W TC 0 100 24546 4 1 8 0 2611 17 22 0698 7205 0 7 RESISTOR 51 1 1 O5W TC 0 100 24546 C3 1 8 TO 51R1 F A17R23 0698 7205 0 RESISTOR 51 1 1 05W TC 0 100 24546 C3 1 8 TO 51R1 F 17924 0698 7216 3 2 RESISTOR 147 1 O5W TC 0 100 24546 C3 1 8 TO 147R F A1T7R25 0698 3154 0 RESISTOR 4 22K 1 125W 0 100 24546 4 1 8 0 4221 A17R26 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 4 1 8 0 5111 A17R27 0698 7205 0 RESISTOR 51 1 1 OSW TC 0 100 24546 C3 1 8 TO 51R1 F A17R28 0757 0278 9 3 RESISTOR 1 78 1 125W TC 0 100 24546 C4 1 8 T0 1781 F A17R29 0757 0278 9 RESISTOR 1 78 1 125W TC 2 0 100 24546 C4 1 8 T0 1781 F A17R30 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 70 101 A17R31 0757 0401 0 RESISTOR 100 1 125W TC 2 0 100 24546 4 1 8 0 101 A17R32 0757 0346 2 RESISTOR 10 1 125W TC 0 100 24546 C4 1 8 T0 10R0 F 17 0757 0403 2 RESISTOR 121 1 125W TC 04 100 24546 C4 1 8 TO 121R F 17 34 0757 0465 6 RESISTOR 100K 1 125W TC 0 4 100 24546 4 1 8 0 1003 A17R35 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 0 101 17836 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 C4 1 8 TO 101 F A17R37 0757 0465 6 R
161. RESISTOR 464 1 125W 04 100 24546 4 1 8 10 4640 4843 NOT ASSIGNED 44 NOT ASSIGNED AAPAS 0757 0442 9 RESISTOR 10K 1 125W 04 100 24546 C4 1 8 T0 1002 F AARA6 0698 3160 8 7 RESISTOR 31 6K 1 125W 0 100 24546 4 1 8 79 3162 4847 07570401 9 RESISTOR 100 1 125W TC 04 100 24546 C4 1 8 T0 101 F AARAS 0757 0403 2 5 RESISTOR 121 1 125W TC 0 100 24546 C4 1 8 TO 121R F AARAS 0698 8833 2 1 RESISTOR 10K 1 125W TC 04 10 28480 0698 8833 A4RSO 2100 3273 1 RESISTOR TRMR 2K 10 C SIDE ADJ 1 TRN 28480 2100 3273 ASRS1 0698 3304 8 4 RESISTOR 14 7K 1 TC amp 0 10 28480 0698 3904 AARS2 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F A4R53 0757 0442 9 RESISTOR 10K 196 125W 0 100 24546 C4 1 8 T0 1002 F A4R54 0698 3441 8 13 RESISTOR 215 1 125W 0 100 24546 C4 1 8 T0 215R F 4955 07570442 9 RESISTOR 10K 1 125W F TC 20 100 24546 4 1 8 10 1002 4 56 0698 3430 5 RESISTOR 21 5 1 125W 0 100 03888 PMES5 1 8 TO 21R5 F AARS7 0698 3430 5 RESISTOR 21 5 1 125W TC 0 100 03888 PMES55 1 8 T0 21R5 F 858 0698 3441 8 RESISTOR 215 1 125W TC 404 100 24546 C4 1 8 T0 215R F AARS9 0698 0084 9 RESISTOR 2 15 1 125W TC 0 100 24546 C4 1 8 T0 2151 F AAREO 07570400 9 RESISTOR 80 8 196 125W TC 04 100 24546 C4 1 8 TO S0RS F A4R61 0757 0199 3 RESISTOR 21 5K 1 125W TC 0 100 24546 C4 1 8 T0 21
162. RF CH MLD 22UH 5 1660 38510 9100 1625 0 1 INDUCTOR RF CH MLD 33UH 5 1660X 385LG 9140 0840 3 1 COIL VAR 18UH 56 2UH 20 PC MTG 9100 1626 1 1 INDUCTOR RF CH MLD 36UH 5 166DX 385LG 9140 0841 4 1 COIL VAR 6 1UH 19 1UH 22 PC MTG 9140 0303 3 2 INDUCTOR 89 3UH 2 9140 0454 5 1 INDUCTOR RF CH MLO 18UH 5 1660 38516 08902 02225 3 1 COVER MIXER 2360 0113 2 1 SCREW MACH 6 32 25 IN LG PAN HD POZI 5001 0176 0 2 GROUND STRAP 0363 0159 0 7 RFI STRIP FINGERS ZINC PLATED 1853 0281 9 4 TRANSISTOR 2 2307 SI 12 400 1853 0314 9 2 TRANSISTOR PNP 2N2905A 61 TO 39 PD 1854 0404 0 1 TRANSISTOR NPN Si TO 38 PD 360MVV 1854 1032 2 1 TRANSISTOR NPN SI PD 2 5W 1853 2922 4 2 TRANSISTOR PNP SI PD 300MW 150MHZ 1854 1022 2 1 TRANSISTOR NPN SI PD 2 5W 1853 0020 4 TRANSISTOR PNP S PD 300MW FT 150MHZ 1853 0281 9 TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW 1853 0281 9 TRANSISTOR PNP 2N2907A SI TO 18 PD 40CMW 1853 0314 9 TRANSISTOR PNP 2N2905A SI TO 39 PD 6 7854 0610 0 TRANSISTOR NPN TO 46 FT 800MHZ 1858 0008 8 1 TRANSISTOR ARRAY 14 PIN PLSTC DIP 1853 0281 9 TRANSISTOR PNP 2 2907 SI 18 PD 400MW 07570442 9 1 RESISTOR 10K 1 125W 0 100 07570200 7 1 RESISTOR 5 52K 1 125 04 100 0698 3354 0 6 RESISTOR 4 22K 1 125 F 0 100 0698 8821 8 3 RESISTOR 5 62 1 125W F 0 100 0698 8821 8 RESISTOR 5 62 1 125
163. Replace with latest parts Part Number ROM Number 08901 80062 08901 80063 08901 80064 Part Number 08901 80066 08901 80067 08901 80068 Service Sheet BD5 8D 55 Service Mode 8901B Table 8D 16c Data Line Signatures 3 Step 9 2432A to 2550A Test Point Signature Valid ROM part numbers ROM Number Part Number 08901 80071 08901 80072 08901 80073 Table 8D 16d Data Line Signatures 73 Step 9 2519A to 2523A Test Point Valid ROM part numbers ROM Number Part Number 08901 80076 08901 80077 08901 80078 Valid ROM part numbers ROM Number Part Number 08901 80084 08901 80077 08901 80078 Valid ROM part numbers ROM Number Part Number 08901 80081 08901 80082 08901 80083 8D 56 Service Sheet BD5 Model 8901B Service Table D 86g Data Signatures Je gt Step 6 26084 to 26424 Start Stop Signature on CONTROL BUS DATA Test Point ER EREVESER SAEED 66H1 CH10 H8HC 2C9F 4726 71P8 A687 7H68 A2CC PC7C 61AA P38F 7P8H F2CP CSAP OF28 U741 6A33 2474 52UU A404 3314 alid ROM part numbers ROM Number Part Number 08901 80087 08901 80088 08901 80089 Signature on CONTROL BUS DATA Test Point po fate sje r7 y 4009 2P98 F90H AUHP 8882 235U 5U7P 9H41 7631 2 14P5 488 6F71 063H 74A1 1055 2501 H3H4 FPUP F4P5 4CHA 8APP 202C
164. SHIELD COMP SMALL SHIELO CKT SM NOT ASSIGNED NOT ASSIGNED TRANSISTOR PNP 2N2907A S TO 18 PD 400MW TRANSISTOR PNP 2 2907 SI TO 18 PD 400MW TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW TRANSISTOR NPN SI PD 180MW 4GHZ TRANSISTOR PNP 1 300MW FT 150MHZ Parrtais Component o Refer section Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 00000 28480 28480 28480 28480 28480 28480 04713 04713 04713 25403 28480 ei t Model 8901B Mfr Part Number 1250 1220 2190 0124 2950 0078 9100 3922 9100 3922 9100 3922 9100 3922 9100 1641 9100 1621 9140 0131 08901 80002 9140 0840 9140 0131 9100 1626 08901 80001 9140 0841 9140 0303 9140 0131 9100 1621 08901 00030 ORDER BY DESCRIPTION 2190 0008 5001 0176 5001 0176 0363 0159 08662 00040 08662 00038 2N2907A 2N2907A 2 2907 BFR 91 1853 0020 part change rev 1670190 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Designation Qty Number D Mfr Part Number Description d A17 08901 60145 SERIAL PREFIX 2314A TO 2636A A17Q6 1854 0720 3 1 TRANSISTOR NPN SI PD 500MW FT 4GHZ 28480 1854 0720 1707 1853 0020 4 TRANSISTOR PNP 1 300MW FT 150MHZ 28480 1853 0020 A17Q8 1854 0071 7 TRANSISTOR NPN SI PD 300MW 200MHZ
165. See Service Sheet 10 N 2 Voltage to Time Converter 10 000 counts equal 1V but includes a 0 6V offset See Service Sheet 15 or Special Functions 49 and 50 FM Calibrator See Service Sheet 29 N 4 High Frequency VCO Divided by 8 This is the 40 to 80 MHz signal proportional to the LO frequency See Service Sheet 17 8 Selected Time Base Reference The display should read 1000000 1 See Service Sheet 22 N 9 External Time Base Reference The display should read 10000001 when an external reference is connected See Service Sheet 22 Special Functions I SS SSS SSS See Model 8901B Service Internal Time Base Reference The display should read 100000041 when no external reference is connected See Service Sheet 22 Audio Counter Input If the Audio Frequency measurement mode has been selected the frequency of the signal at the input of Audio Counter is displayed The frequency is measured with the Counter in the A11 Counter Assembly The Audio Counter in the A52 Audio Counter Distortion Assembly is not exercised except for its Schmitt trigger input See Service Sheet 16 47 0 Instrument Configuration Display 23144 and Above Displays certain instrument configu ration details in the following form New Opt Series 030 lt Old Opt Series 030 where 1 is yes and 0 is no The new Option Series 030 refers to instruments with serial prefixed 2642A and above old refers to older versions of the HP 8901B Modulation An
166. TC 04 100 22480 0699 0069 A20TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A20TP2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 A20TP3 1251 0500 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A20TP4 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 5 52 SQ 28480 1251 0600 A20U1 1826 0043 4 IC OP AMP GP TO 99 PKG 3L585 CA307T A20U2 1820 1547 3 1 IC MULTIPLXR 8 CHAN ANLG 16 DIP C PKG 04713 MC140518CL A20U3 1820 1198 0 GATE TTL LS NAND QUAD 2 INP 01295 SN74LSO3N 2004 1826 0217 4 1 IC GP DUAL 99 PKG 07933 4558 A20U5 1826 0557 5 1 IC OP AMP GP QUAD 14 DIP C PKG 27014 1 348 qUeler to 7 selected j Zopipouent befer section 13 16 701 90 O Model 8901B Reference Designation A20 A20U6 A20U7 A20U8 A20US A20U10 A20U11 A20U12 20013 A20U14 20015 A20U16 A20U17 A20U18 A20U19 20020 A20U21 A20U22 A20U23 A20VR1 A20VR2 A20VR3 A20VRA 20 85 to section 7 rev 16 11 90 HP Part Number 1820 1200 1820 1411 1820 1199 1820 1216 1826 0188 1820 1216 1826 0188 1990 0643 1990 0643 1820 1195 1820 1411 1820 1411 1820 1411 1820 1411 1820 1411 1820 1411 1820 1411 1820 1197 1902 0041 1902 0064 1902 0064 1902 0064 1902 0064 D 90 0 Q0
167. The last five digits serial number suffix are unique to each instrument When parts in the instrument are changed the serial number prefix of the instrument may also change This means that sometimes a part will be listed more than once in the the replaceable parts list along with a serial number prefix or range of serial number prefixes Find the serial number prefix on the serial plate of your instrument and order the part listed under the corresponding prefix in the table If no serial prefix information is listed the part is compatible in instruments of all serial numbers NOTE It is possible that some assemblies in your instrument have been updated through service or retrofitting to reflect changes made to instruments with serial number prefixes later than that shown on your instrument serial number tag Be sure to note the board number of the assembly being repaired or replaced when ordering parts for your instrument 6 1 Replaceable Parts Model 8901B How to Order To order a part in the Replaceable Parts List call or write the nearest Hewlett Packard Sales Office Have the following information ready to speed the ordering process 1 The Hewlett Packard part number with the check digit The check digit will ensure accurate and timely processing of your order 2 The quantity required 3 An approved purchase order number Sometimes required NOTE Within the USA it 15 better to order directly from the HP Parts
168. _ 4001 21 ya 201 30 100 09A JH 0N lt T 27 2201 dH 3H21Y1 HOLY INSSE ANNONS 7 100 ON a Sr 1 a5 dee T p 7 52 2 LOHS 3NO 1081802 211 5 NM n 1100430 08 0 0 HOLIMS H 8 7 52 500 NOLLdO 80123130 80953 1041803 T 440 NO T3431 40117171250 8377041403 1432 3 194 HOLY TIIISO Andino i HOSNIS H3M0d ik Ne zt e onn Be ve 801 111280 ONY H3IJIldMY 831113 022 4 ZHN 08 HOL YHSALNI yl SSYd A01 La HOLYMNALLY M d dH gt H3l3M1104 3441 05435 0 in T rr I Ed 5491713 50 i S 815 3610 Dan A LO AT 109 lt s E 8344082 1 lt lt 501 16 HOLIMS 2n SO T 2v 8NISN3S 38 MdMI ONY 2 ether HOSNAS 130 5 JY W3MOd THN y 2 N
169. bit 0 or 1 The rrrr is the d data read back from the Instrument Bus The www is the d data written to the bus Thus rrrr and wwww are normally the binary form of the Special Functions 8B 1 Service 8B 2 Model 8901B hexadecimal value for d Exceptions to this are Special Functions 0 5sd and 0 6sd which control the display itself The hexadecimal characters A B C D E and F are displayed on entry as A b C d E and F and they are entered from the keyboard as Shift 0 Shift 1 Shift 2 etc or from the HP IB as 0 X1 X2 etc Table 8B 1 summarizes the hexadecimal entry and readback for Direct Control Special Functions Table 8B 1 Hexadecimal Information for Direct Control Special Functions Hexadecimal Decimal Binary Keystroke Code Display Character Equivalent Equivalent Entry Entry On Entry 0 0 0 0 0 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6 7 7 7 7 7 8 8 8 8 8 9 9 9 9 S Shift 0 S Shift 1 X1 b S Shift 2 X2 C D S Shift 3 d E S Shift 4 X4 E Shift 5 5 Direct Control Special Function Applications Direct Control Special Functions are most often used to provide manual control of various switches or digital to analog devices in the hardware The following examples illustrate how to use Direct Control Special Functions Example 1 In the path of the demodulated audio signal is a set of selectable active high pass
170. changes frequency the HF VCO is tuned via the Track Loop Amplifier and HF VCO Tune Integrator and Amplifier in A23 to keep the IF at a nominal 1 5 MHz Track tuning is not permitted with the 455 kHz IF Thus the track mode is the only tuning mode where the LO locks to the input signal that is a frequency lock loop is formed The Track Loop Amplifier has a different gain for each LO range This compensates for the change in LO tuning sensitivity caused by the LO Dividers Service Sheet BD2 Model 8901B Service TROUBLESHOOTING General Procedures for checking the RF Section of the instrument are given below The blocks or points to check are marked on the block diagram by a hexagon with a check mark and a number inside for example V3 Before performing any check perform all the checks on Service Sheet BD1 CAUTION Tighten SMA connectors to 0 8 to 1 1 7 to 10 Tighten SMC connectors to 0 6 5 in lb Hand tightening of connectors is insufficient Hand tightened connectors can work loose and cause reduced performance or malfunctions Equipment OSCIIIOSCODE c eee 1740 Power iau 2 6215 Signal Generator Ea E UA pas p E HP 8640B SPECTA vice apes cise see RE UPC ees HP 8559A 182T NOMIC
171. diode T Indicates a voltage regulation diode Multiple transistors a single package physical location of the pins is shown T SE package outline on schematic Identification of logic families as shown in this case ECL 8A 12 Model 8901B Al LO Le Service Table 8 6 Schematic Diagram Notes 4 of 11 DIGITAL SYMBOLOGY REFERENCE INFORMATION input and Output Indicators Implied Indicator Absence of polarity indicator see below implies that the active state is a relative high voltage level Absence of negation indicator see below im plies that the active state is a relative high voltage level at the input or output Polarity Indicator The active state is a relatively low voitage level Dynamic Indicator The active state is a transition from a relative low to a relative high voltage level Inhibit Input Input that when active inhibits blocks the active state outputs of a digital device Analog Input input that is a continuous signal function e g a sine wave Polarity Indicator used with Inhibit Indicator Indicates that the relatively low level signal inhibits blocks the active state outputs of a digital device Output Delay Binary output changes state only after the referenced input m re turns to its inactive state m should be replaced by appropriate dependency or func tion symbols Open Collector Output Open Em
172. ee o O O Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part nth Mfr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS MP21 08901 00047 7 1 SUPPORT BRACKET DIGTL 28480 08901 00047 MP22 08901 20159 4 1 WIRE DUCT 28480 08901 20159 2190 0006 1 4 WASHER LK HLCL NO 6 341 N ID 28480 2190 0006 2360 0197 2 4 SCREW MACH 6 32 375 IN LG PAN HD POZ 28480 2360 0197 3050 0227 3 4 WASHER FL MTLC NO 6 149 IN ID 28480 3050 0227 2314A TO 2909A MP23 08901 00035 3 1 GASKET 28480 08901 00035 BETWEEN EXTRUSION AND A27 2619A AND ABOVE MP23 NOT ASSIGNED MP24 08901 00088 6 1 PC BD GUIDE 28480 08901 00088 2360 0115 4 SCREW MACH 6 32 312 IN LG 2 00000 ORDER BY DESCRIPTION 08662 20028 6 HOLE PLUG 28480 08662 20028 MP25 08901 80007 7 4 SHOCK MOUNT 28480 08901 80007 MP26 NOT ASSIGNED MP27 5062 4033 4 1 INFORMATION TRAY 28480 5062 4033 MP28 08901 00046 6 1 FAN COVER 28480 08901 00046 MP29 NOT ASSIGNED MP30 08901 20160 7 1 WIRE DUCT COVER 28480 08901 20160 MP31 08901 00140 1 1 REAR WIRE DUCT SUPPORT 28480 08901 00140 MP32 08901 90085 2 1 SPECIAL FUNCTION INFORMATION CARD 28480 08901 90085 MP33 08901 90086 3 1 OPERATING INFORMATION CARO 28480 08901 90086 MP34 1600 0692 1 3 STAMPING BE CU CLIP WINDOW RETAINING 28480 1600 0692 MP35 08901 00131 0 1 SPACING BRACKET 28480 08901 00131 2200 0105 4 2 SCREW MACH 4 40 3124446 PAN HD POZI 00000 ORDER BY DESCRIPTION MP36 08901 00086
173. filters which are located on the A3 Audio De emphasis and Output Assembly A simplified diagram of the filters is shown in Figure 8B 1 The filters and through path are selected by analog switches U12A U12B and U12C Table 8B 2 which is associated with the troubleshooting of the filters lists the Direct Control Special Functions normally used to control the switches Table 8 2 Audio High Pass Filter and FM Pre Display De Emphasis Direct Control Special Functions Direct Control Special Function Pre Display On Pre Display Off Thru Path 0 141 0 149 50 Hz HPF 0 142 0 14A 300 Hz HPF 0 144 0 14 To insert the 50 Hz High Pass Filter key in 0 142 SPCL 142 SPCL The display will show 000016 0010 indicating that the Controller received d 2 from the keyboard HP IB issued it to the Instrument Bus and read it back If the circuitry on the assembly is working properly switch U12A will close and the audio signal will pass through the 50 Hz High Pass Filter Special Functions Model 8901 Service P O AUDIO OE EMPHASIS OUTPUT ASSEMBLY OUTPUT To AMPLIFIER Modulation 1 Output Audio Input 300 Hz HPF INVERTING NON INVERTING FM DE EMPHASIS AND AMPLIFIER 3kHz LPF NETWORKS From Figure 8 1 Example Showing High Pass Filter Switching Notice that the display no longer shows a measurement result No annunciators are lighted except those rela
174. flop is reset lt DAV gt lt RFD gt lt DAC gt This function reads back and displays the present state of the three bus handshake lines lt DAV gt reflects the state of the Data Valid bus handshake line as being driven by the Modulation Analyzer 1 being driven 0 not being driven Thus when in Listen Only this display will always show 0 for lt DAV gt The lt RFD gt and DAC always track the bus lines Ready For Data and Data Accepted For example 1 for lt RFD gt means line Ready For Data is true high lt ATN gt lt REN gt This function reads back and displays the present state of the ATN Attention bus control line and the state of the Remote Enable Flip Flop A 1 for either lt ATN gt or REN indicates is true low at the bus or that the Remote Enable Flip Flop is set lt SPM gt lt SRQ gt This function reads back and displays the state of the Serial Poll flip flop and the state of the SRQ bus control line as being driven by the Modulation Analyzer is in serial poll mode SPM or that it is presently driving the SRQ bus control line PIO Port A This function inputs and displays without modifying the data at PIO port A A14U13 Leading zeros are blanked The following table interprets the display PIO Port A Ai4Ui3Pin 2 37 36 31 30 25 24 19 Display Digit 1 2 3 4 5 6 7 8 Mnemonic 108 07 06 105 104 03 02 101 1 True PIO Port B T
175. found the signal is too low The routine does not then range back but instead displays Error 79 and remains on the low sensitivity range for the rest of the measurement cycle The error signifies that the routine would normally have ranged back but did not actually do it This may have been due to the nature of the audio signal for example the voice signal or due to a problem in the audio gain stages or detection circuits See Service Sheet BD4 Error 80 Audio Settling Timeout First time measurement results are not output to the display until the measurement result has settled or until one second has elapsed whichever is first Settling is determined by comparing successive measurements This error message indicates that a one second timeout has occurred This may be due to the nature of the signal or an instability in the audio circuits See Service Sheet BD4 Error 81 LO Tuning Adjusted to Center Signal in IF Passband This error message only occurs in automatic tuning low noise lock If the signal in the IF drifts out of the acceptable pass band limits see the spectrum diagram in Frequency Tuning in Section 3 but is still acceptable the LO frequency will be adjusted to center the signal in the IF passband When this occurs Error 81 will be displayed In certain situations it is possible to trick the Controller into making this tuning adjustment when the signal is properly tuned for example when the IF signal has an excessively high
176. hues numbers the borderlines of board in lower assemblies signify right corners of connections to the assembly schematic diagrams which are separate are service from those made through sheet numbers the integral plug part of the assembly designation includes assembly number Asterisk indicates factory selected components See Section 5 Value selected for best operation Value shown is average or most commonly selected value ____ ee pe ee ccc Model 8901B Service Table 8A 6 Schematic Diagram Notes 2 of 11 Values for all components are marked in units of farads henries and ohms unless otherwise specified Asterisk denotes a factory selected value Value shown is typical See Section V 2 Tool aided adjustment Encloses front panel designation Encloses designation Circuit assembly borderline Other assembly borderline _ Heavy line with arrows indicates path and direction of main signal dS Cd ED CM Heavy dashed line with arrows indicates path and direction of main feedback Ms Indicates stripline i e RF transmission line above ground Wiper moves toward cw with clockwise rotation of contro as viewed from shaft or knob 4 T Numbered Test Point measurement aid provided Encloses wire or cable color code Code used is the same as the resistor color code First number identifies the
177. important to note that the actual instrument setup is guaranteed to conform to the Keyboard request only at the moment a measurement is taken The Controller may change the instrument hardware at other times to optimize its tuning leveling and ranging functions For example in troubleshooting 3 1 SPCL may be keyed in to check if the 455 kHz IF filter is being selected properly If there is no RF input signal and the instrument is trying to auto tune it would be discovered that both IF filters wide 455 kHz and 1 5 MHz are being used The proper test would have been to use a Direct Control Special Function 0 031 SPCL The microprocessor based Controller interacts closely with the hardware of the instrument Many circuits are used by the Controller for different functions at different times Thus a specific failure in one circuit can show up as a collection of symptoms that superficially seem unrelated For example a failure of the squelch detector in the FM Demodulator can result in frequency errors when tuning to an RF signal with large amounts of AM The appearance of several symptoms can often be used as an advantage since they provide many avenues to pursue when tracking down a problem A distinct difference exists between special functions used for service that is Direct Control Special Functions and Service Special Functions and those used for normal instrument operation When service special functions are used normal instrument function
178. in Section 3 for more operation limitations Operation Out of Specification The specifications are listed in Volume 1 Table 1 1 Performance tests that can be used to verify the specifications are found in Volume 1 Section 4 If instrument performance is only slightly out of limits it can sometimes be corrected by an adjustment The procedures for adjustments are in Volume 1 Section 5 References listed for each adjustment indicate which service sheet to consult when the adjustment procedure fails In general however it is also a good practice to perform the troubleshooting checks on Service Sheet BD1 since they take only a few minutes and reveal much information 8A 5 ee ee nee Service Model 8901B Catastrophic Failures Begin troubleshooting catastrophic failures by performing the troubleshooting checks on Service Sheet BD1 The simple procedures there take only a few minutes and will quickly differentiate a control digital problem from a hardware analog problem The checks give cross references to the detailed block diagrams Service Sheets BD2 to BD5 which then direct you to the necessary schematic The troubleshooting information found on all service sheets consists of a series of performance checks The purpose of the checks is not to identify which circuit or component has failed but rather to verify whether the assembly or circuit is operating correctly Information on the possible cause of failure is given in the form o
179. in the Power Sensor The chopper drive comes from the 220 Hz Multivibrator The resultant ac signal is ac coupled to the narrow band Input Amplifier and the gain of this amplifier is autoranged by the Controller The amplified ac signal is converted back to dc by the Synchronous Detector which full wave rectifies the ac signal by rechopping it in phase Noise on the resultant dc signal is filtered by the Noise Filters to stabilize the displayed reading The heaviest filtering is done on the most sensitive ranges and results in an increase in the measurement response time Before an RF power measurement is initiated the switch at the output of the Power Meter connects the Sensor Identifier Resistor circuit to the Voltmeter The voltage across the resistor indicates the type of Power Sensor present The Zeroing DAC is set by the Controller to cancel any dc offset of the Power Sensor when no input is applied In the zeroing sequence the RF Input to the Power Sensor is switched out a power reading is taken and the Zeroing DAC is automatically adjusted for a zero reading In actual implementation the Zeroing DAC is adjusted for a pre determined offset voltage reading The offset is subtracted out in subsequent power measurements by the Controller The Voltmeter then operates in its most linear region Service Sheet BD1 8D 1 Service Model 8901B Calibration of the Power Sensor is verified by connecting the Sensor Module to the CALIBRATION RF
180. liefe ta 7 rev 16 10190 6 15 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Qt D Mfr 4 escription Mfr Part Number Designation Number D y 55 08901 60251 1 1 IF CHANNEL FILTER ASSEMBLY 28480 08901 60251 55 1 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 6289 150D685X9035B2 55 2 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 150D685X9035B2 A55C3 0180 2929 8 1 CAPACITOR FXD 68UF 10 10VDC TA 28480 0180 2929 55 4 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 55 5 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A55C6 0160 4835 7 CAPACITOR FXD 1UF 19 SOVDC CER 28480 0160 4835 A55C7 01604535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 55 8 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 55 9 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 A55C10 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 55 11 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 55 12 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 55 13 0160 4832 4 CAPACITOR FXD O1UF 109 100VDC CER 28480 0160 4832 A55C14 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 55 15 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 01604832 55 16 0160 4797 0 CAPACITOR FXD 3 3PF 25 100VDC CER 28480 01604797 55 17 0160 4525 4 CAPACITOR
181. of the key cap as you snap it in place since eight different positions for installation are possible Key Cap Led Replacement Many of the front panel pushbutton key caps have molded in clear lenses which are illuminated by miniature LEDs located in the center portion of the switch at the circuit board During production of the instrument the LEDs are first soldered in place and then the switch is slid down around them and heat staked in place If replacement of the LED becomes necessary due to burnout it can be replaced without having to remove the switch To replace a key cap LED use the following procedure 2 Remove the pushbutton key cap refer to Key Cap Replacement Procedure Place the Modulation Analyzer on a table top Lower the front panel so that it is facing downward refer to the Front Panel Disassembly Procedure Unsolder the LED leads on the circuit side of the printed circuit board as you pull the LED down through the middle of the switch stem with a pair of small tweezers Insert a new LED one with long leads Make sure the polarity is right Pull the leads through the circuit board and solder Clip off the excess LED lead length on the circuit side of the keyboard Put the front panel in place Snap on the key cap With the instrument power on test the switch function to make sure that the LED works Disassembly Procedures Model 8901B Service 8 WAY ORIENTATION OF KEYCAP vz 2 CO
182. off From these measurements the actual AM depth is computed As with the FM Calibrator the AM Calibrator output when measured by the instrument displays the AM calibration factor Power Supplies The instrument is run from five regulated supplies 40V 15V 15V 5V and 5 The 15V supply continues to power the high stability time base reference Option 002 when POWER is switched to STBY Controller and Remote Interface The Controller plays a key role in governing the instrument operation The Microprocessor in the Controller outputs information to configure the instrument reads back and processes measurement results reads back vital status information to prevent invalid measurements and services interrupts from the Keyboard or Remote Interface Information from the Input Output 1 port of the Microprocessor is carried to the rest of the instrument by the Instrument Bus Typically the data on the Instrument Bus is decoded and latched at the various assemblies then the decoded information is distributed to the appropriate circuit Information within the Controller itself is handled by three main buses the ROM Control ROMC Bus which coordinates the various devices which make up the Controller the Address Bus which addresses ROM and RAM and the Data Bus which carries information to or from ROM and RAM Since the Remote Interface also contains Controller devices these buses are also distributed to it A battery ba
183. safety earth ground must be provided from the main power source to the product input wiring terminals power cord or supplied power cord set SAFETY SYMBOLS Indicates instrument damage can occur if indicated operating limits are exceeded Indicates hazardous voltages A Indicates earth ground terminal WARNING A WARNING note denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met CAUTION A CAUTION note denotes a hazard It calls attention to an operation procedure practice or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product Do not proceed beyond an CAUTION note until the indicated conditions are fully understood and met 2 Chapter 1 Regulatory Information Updated March 1999 Safety Considerations for this Instrument WARNING Chapter 1 This product is a Safety Class I instrument provided with a protective earthing ground incorporated in the power cord The mains plug shall only be inserted in a socket outlet provided with a protective earth contact Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous Intentional interruption is prohibited Whenever it is likely that
184. the Controller to its power up state and is equivalent to switching the POWER switch to STBY and back to ON Because this function affects the HP IB hardware it is unavailable from HP IB causes Error 24 See Default Conditions and Power Up Sequence in Section 3 41 0 Controller Clear Initializes the Controller to its power up state but bypasses the operational checks and is equivalent to pressing the blue key and INSTR PRESET Instrument Preset or giving the device clear command via HP IB Leaves hardware unaffected but clears any service request message SRQ being issued by the Measuring Receiver sets the service request condition to its power up state and clears all bits in the status byte See Default Conditions and Power Up Sequence in Section 3 42 0 Display Software Date Displays the date of the software in the form lt day of year gt lt year gt The display times out after 5s 43 N Measurement Progress and Service Error Message Display Control Measurement Progress Error Messages are Errors 40 through 64 Service Error Messages are Errors 65 through 89 Refer to Error Messages paragraph 8 8 N 0 Disables display of Service Error Messages 65 to 89 N 1 Enables display of Service Error Messages 65 to 89 Cleared by the AUTOMATIC OPERATION key N 2 Enables display of Service Error Messages 65 to 89 Not cleared by the AUTOMATIC OPERATION key N 40 to N 89 Enables measurement to pause on the Measurement Progr
185. the X1 input is active the associated input output pair are bi directionally connected together When X1 is inactive the connection is broken When the controlled or gated input or output already has a functional label D is used here that label will be prefixed by the identifying number If the input or output is affected by more than one gate or control input then the identifying numbers of each gate or control input will appear separated by commas When GA is active the active address line 0 through 3 is the decoded value of the 1 and 2 binary inputs When the controlled address lines have a functional value that value will be prefixed by the identifying letter 8A 20 Model 8901B Service 8 7 SPECIAL FUNCTIONS General Special Functions extend user control of the instrument beyond that normally available from the front panel They are intended for the user who has a thorough understanding of the instrument and the service technician who needs arbitrary control of the instrument functions During normal use the Modulation Analyzer safeguards itself against invalid measurements Safeguards come in the form of automatic tuning and ranging overpower protection squelch modulation output blanking and error messages When Special Functions are used some of these safeguards are removed and thus there is a degree of risk that the measurement may be invalid However there is no risk of damage to the inst
186. the flip flop to reset J J Input Analogous to set input K K Input Analogous to reset input D Data input Always enabled by another input generally a C input see Dependency Notation When the D input is dependency enabled a high level at D will set the flip flop a low level will reset the flip flop Note strictly speaking D inputs have no active or inactive states they are just enabled or disabled m Count Up Input When active increments the contents count of a counter by m counts m is replaced with a number Count Down Input When active decrements the contents count of a counter by counts is replaced with a number Shift Right Down Input When active causes the contents of shift register to shift to the right or down m places m is replaced with a number Shift Left Up Input When active causes the contents of a shift register to shift to the left or up m piaces m is replaced with a number NOTE For the four functions shown above if m is one it is omitted Functional Labels The following functional labels are to be used as necessary in symbol build ups to ensure rapid identification of device function mCNTR Counter Array of flip flops connected to form a counter with modules m m is re placed with a number that indicates the number of states 5 CNTR 10 CNTR etc 8A 15 Service Model 8901B Table 8 6 Schematic Diagram Notes 7 o
187. to 1 kHz Connect its output to A2J2 FM 10 11 IN Press FM waveform should have an amplitude of 3 0 to 3 6 Vpp If faulty see Service Sheet 12 and check the 260 kHz Low Pass Filter at the FM output Increase the synthesizer frequency to 260 kHz The waveform should have an ac amplitude of 1 1 to 1 5 Vpp If faulty see Service Sheet 12 and check the 260 kHz Low Pass Filter at the FM output NOTE This is not a valid measurement of the filter bandwidth since the source impedance is incorrect It will however show up a severe problem For a more precise test of bandwidth see Service Sheet 12 or perform Performance Test 4 Audio Filters in Section 4 Set the synthesizer level to 17 dBm and frequency to 1 kHz Key in 2 2 SPCL to reduce the audio gain by 20 dB The waveform should have an ac amplitude of 950 to 1150 mVpp If faulty see Service Sheet 12 and check 20 dB Attenuator 1 Key 2 3 SPCL to reduce the audio gain another 20 dB The waveform should have an amplitude of 95 to 115 mVpp If faulty see Service Sheet 12 and check 20 dB Attenuator 2 Key in 2 2 SPCL Set the synthesizer frequency to 110 kHz Set LP FILTER to gt 20 kHz The waveform should have an ac amplitude of 400 to 600 mVpp If faulty see Service Sheet 12 and check the gt 20 kHz Low Pass Filter Set the synthesizer frequency to 15 kHz Set LP FILTER to 15 kHz The waveform should have an amplitude of 600 to 900 mVpp If
188. to 25 that is from a times 2 divide by 256 Thus the LO can tune from 1300 MHz to 1 25 MHz in ten octave ranges A fixed divide by eight output from the LO Dividers is the LO HF VCO 8 input to the Counter There are four tuning modes e manual tuning and low noise e automatic tuning and low noise e automatic tuning and signal tracking e manual tuning and signal tracking Manual Tuning and Low Noise Consider the sequence followed for manual tuning When a frequency is entered from the Keyboard the LO is configured as in Figure 8D 1 The Digital to Analog Converter DAC is connected to the HF VCO tune input as shown Knowing the desired frequency the Controller computes the octave number n for the LO Divider and sets the DAC to its midrange T hen an iterative sequence of counting the LO and adjusting the DAC is carried out until the LO is near the correct frequency Service Sheet BD1 8D 5 Service Model 8901B To Mixer To NM TC EET Counter HE VCO TUNE INTEGRATOR AND AMPLIFIER CONTROL AMPLIFIER DIGITAL TO ANALOG CONVERTER Figure 8D 1 LO Configuration DAC to HF VCO To Mixer LO OUTPUT oU LE VEXO SAMPLER OIVIDER Counter oe HF VCO TUNE INTEGRATOR ANG AMPLIFIER DAMPUFIER DIGITAL TO ANALOG CONVERTER ie see Figure 8D 2 LO Configuration DAC to LF VCXO Next the LO is configured as a phase lock loop as shown in Figure 8D 2 The DAC is
189. train pulses is accurately known While the Counter is gated the Counter increments one count for each input cycle When the time base disables the Counter the accumulated count is transferred to storage registers in this case the Controller and the Counter is cleared When the time base again gates the Counter the count sequence repeats The stored count is then processed by the Controller it is multiplied an appropriate scale factor and transferred to the display or used internally by the Controller The Controller itself also forms the final stages of the Counter and keeps track of the number of time base pulses that occur while the Counter is gated The time base is derived from a 10 MHz reference The reference can be either internal or external Switching to external is done automatically when an external reference is applied to the rear panel TIME BASE 10 MHz INPUT connector The Time Base Dividers divide the 10 MHz reference by Service Sheet BD1 rev 22SEP87 ts Model 8901B Service 1600 The output from the dividers becomes the Counter gate A 2 MHz output from a divide by five is used as the Controller clock The Input Selector selects one of several possible inputs to the Counter When the Voltmeter function is selected the 10 MHz reference gated by the Stop Count switch is counted The Stop Count switch closes when the Controller initiates a Ramp Gate pulse it remains closed until opened by the Voltage to Time C
190. 0 100 24546 C3 1 8 TO 422H F AT9R4 0698 7227 6 RESISTOR 422 1 OSW TC x 0 100 24546 C3 1 8 TO422R F A19R5 0698 7227 6 RESISTOR 422 1 05W TC 0 100 24546 C3 1 8 TO 422R F 1986 0698 7232 3 4 RESISTOR 681 1 05W TC 0 100 24546 C3 1 8 TO 68 1R F 13 7 0598 7232 3 RESISTOR 681 1 05W TC 0 100 24546 C3 1 8 TO 68 1R F A19R8 0698 7232 3 RESISTOR 681 1 05W TC 0 100 24546 C3 1 8 TO 68 1R F A19R9 0698 7232 3 RESISTOR 681 1 OSW 0 100 24546 C3 1 8 TO 681R F 19 10 0598 3437 2 1 RESISTOR 133 1 125W TC 0 100 24546 C4 1 8 T0 133R F A19R11 0757 0402 1 RESISTOR 110 1 125W TC amp 0 100 24546 4 1 8 0 111 19 12 0757 0422 5 RESISTOR 909 1 125W 0 100 24546 C4 1 8 T0 909R F A19R13 0757 0422 5 RESISTOR 909 1 125W 0 100 24546 C4 1 8 T0 909R F 19814 0757 0422 5 RESISTOR 909 1 125W TC x 0 100 24546 C4 1 8 T0 909R F A19R15 0757 0422 5 RESISTOR 909 1 125W TC 0 100 24546 C4 1 8 T0 909R F 2314A 2619 19 16 0698 7209 4 RESISTOR 75 1 OSW TC 0 100 24546 C3 1 8 TO 75R0 F A19R17 0698 7238 9 1 RESISTOR 1 21K 1 05W TC 204 100 24546 C3 1 8 TO 121 1 F 2622A TO 2806A 19 6 0757 0280 3 RESISTOR 1K 1 125W FTC 0 100 24546 C3 1 8 TO 1001 F AI9RI7 0698 3151 7 RESISTOR 2 87K 1 125W TC 0 100 24546 4 1 8 2871 A19R18 0698 3132 4 RESISTOR 261 1 125W TC 20 100 24546 4 1 8 0 2610 A19R19 0698 7201 6 1 R
191. 0 195 IN ID NUT HEX DBL CHAM 10 32 THO 067 IN THK CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 1C 195 IN ID NUT HEX DBL CHAM 10 32 THO 067 IN THK E uas Peeks eae dpa they pepp ebete d 51642 28480 51642 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28420 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28420 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 100 100 0 279 0160 4084 100 100 0 279 0160 4822 0160 4822 0160 0590 0160 4822 0160 4822 0160 4835 0160 4084 0160 4822 0160 4835 0160 0571 0160 4822 0160 4084 0160 0571 0160 4835 0160 4835 150D156X9020B2 0160 3877 0160 3878 0160 0576 0160 0576 1901 0033 0122 0161 0122 0161 0122 0161 0122 0161 19010033 1901 1097 1901 1097 5082 3080 1901 0033 9179 0029 9170 0029 1250 1425 2190 0124 2950 0078 1250 1425 2190 0124 2950 0078 1250 1425 2190 0124 29500074 0 rev 16JUL906 eg ee m LL Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part ae Mfr Designation Number D Qty Description Cods Mfr Part Number A19 08902 60126 SERIAL PREFIX 2909A AND ABOVE 1917 9100 3922 4 INDUCTOR FIXED 120 130
192. 0 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 tRefer to Section 7 for update information Factory Selected Coniponeni Refer ta Secon yi A Eriala part change rev 16101 90 6 13 6 14 Replaceable Parts Reference HP Part Qty Designation Number D 2314A TO 2422A A2UI 1826 0582 6 7 A2U2 1826 0582 6 2426 AND ABOVE 201 1826 0606 5 202 1826 0606 5 203 1826 0413 2 5 2314 2422 204 1826 0582 6 2426A AND ABOVE 204 1826 0606 5 205 1826 0109 3 1 A2W1 08901 20096 8 1 A2wW2 08901 20095 7 1 theefer Section 7 for update information Table 6 3 Replaceable Parts Description IC SWITCH ANLG QUAD 16 DIP C PKG SWITCH ANLG QUAD 16 DIP C PKG ANALOG SWITCH 4 SPST 16 CERDIP ANALOG SWITCH 4 SPST 16 CERDIP iC OP AMP LOW BIAS H IMPD 99 PKG IC SWITCH ANLG QUAD 16 DIP C PKG ANALOG SWITCH 4 SPST 16 CERDIP AMP WB 99 PKG CABLE SEMI RIGID AM CABLE SEMI RIGID FM Faciois selected Component Refer section Mfr Code 27014 27014 17856 17856 34371 27014 17856 34371 28480 28480 T Model 8901B Mfr Part Number LF13201D LF13201D DG201BK DG201BK HA2 2605 5 LF13201D DG201BK HA2 2625 B0593 08901 20096 08801 20095 A Errata part change rev 16JUL90 Model 8901B Reference Designation A3 A3 A3C1 A3C2 2314 2505A A3C4 2514 AND ABOVE A3C4 5 2314A TO 2505 A3C6 2514A AND
193. 0 1901 0518 54 5 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 AS4FL1 SEE A71 ASAFL2 SEE 71 A54J1 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 INID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 54 2 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX OBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 ASALI 9100 1642 1 2 INDUCTOR RF CH MLD 270UH 5 2DX 45LG 28480 9100 1642 5412 9100 1642 1 INDUCTOR RF CH MLO 270UH 5 20X 45LG 28480 9100 1642 theless 10 Section 7 for update information c Keeton D part change 6 149 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Qt D inei Mfr 4 escription Mfr Part Number Designation Number D d 2 Code 54 1 08901 00151 4 1 BOARD COVER iF AMP DET 28480 08901 00151 5401 1853 0459 3 7 TRANSISTOR PNP 5 PD 625MW FT 200MHZ 28480 1853 0459 5402 1854 0404 0 9 TRANSISTOR NPN Si 18 PD 360MW 28480 1854 0404 A54Q3 1853 0459 3 TRANSISTOR PNP SI PD 625MW FT 200MHZ 28480 1853 0459 5404 1854 0404 0 TRANSISTOR NPN St TO 18 360MW 28480 1854 0404 5465 1854 0404 0 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 5406 1853 0459 3 TRANSISTOR PNP St PD 625MW FT 200MHZ 28480 1853
194. 0 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22024 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A22C25 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A22C26 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 22 27 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 22 28 0160 4680 0 1 CAPACITOR FXD 4000PF 5 100VDC MICA 28489 01604680 A22CR1 1901 0535 9 DIODE SM SIG SCHOTTKY 28480 1901 0535 A22CR2 1901 0179 7 DIODE SWITCHING 15V 50 750PS 28480 1901 0179 A22CR3 1901 0535 9 DIODE SM SIG SCHOTTKY 28480 1901 0535 A22CR4 1901 0179 7 DIODE SWITCHING 15V 50MA 750 DO 7 28480 1901 0179 A22CR5 1901 0535 9 DIODE SM SIG SCHOTTKY 28480 1901 0535 A22CR6 1901 0179 7 DIODE SWITCHING 15V 5 750PS 00 7 28480 19010179 A22CR7 1901 0535 9 DIODE SM SIG SCHOTTKY 28480 1901 0535 A22CR8 1901 0179 7 DIODE SWITCHING 15V 5 750 5 007 28480 190120179 2314A 2411A A22CR9 0122 0065 7 7 DI ODE VVC 29PF 3 28480 0122 0065 A22CR10 0122 0065 7 DIODE VVC 29PF 395 28480 01220065 A22CR11 0122 0065 7 DIODE VVC 29PF 3 28480 0122 0065 A22CR12 0122 0065 7 DIODE VVC 29PF 3 28480 0122 0065 2413A AND ABOVE A22CR9 0122 0167 0 DIODE VVC 5 05 10 C3 C25 MIN 5 28480 0122 0167 A22CR10 0122 0167 0 DIODE VVC 5 05PF 1096 C3 C25 MIN 2 5 28480 0122 0167 A22CR11 0122 0167 9 DIODE VVC 5 05PF 10 C3 C25 MIN 5 28480 0122 0167 A22CR12 0122 0167 0 DIODE VVC 5 05PF
195. 0 HZ 28480 100 3922 1912 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L3 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 1914 9100 3922 4 INDUCTOR FIXED 120 1300 H2 28480 9100 3922 1915 9135 0068 6 2 INDUCTOR RF CH MLD 6 102DX 26LG 28480 9135 0068 1916 9135 0073 3 3 INDUCTOR RF CH MLO 51NH 6 102DX 26LG 28480 9135 0073 1917 9135 0068 6 INDUCTOR RF CH MLD 33NH 6 102DX 26LG 28480 9135 0068 A19L8 9135 0073 3 INDUCTOR RF CH MLD 51NH 6 102DX 26LG 28480 9135 0073 A19L9 PART OF ETCHED CIRCUIT BOARD A19L10 8100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L11 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L12 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L13 8140 0210 1 INDUCTOR RF CH MLD 100UH 5 166DX 385LG 28480 9140 0210 A19L14 9135 0073 3 INDUCTOR RF CH MLD 51NH 6 1902DX 26LG 28480 9135 0073 A19L15 PART OF ETCHEO CIRCUIT BOARD 19 1 08901 00166 T 1 COVER LO DIVIDER 28480 08901 00166 2360 0113 2 SCREW MACH 6 32 25 IN LG PAN HO POZI 00000 ORDER BY DESCRIPTION 19 2 5001 0176 0 GROUND STRAP 28480 5001 0176 A19MP3 5001 0176 0 GROUND STRAP 28480 5001 0176 A198MP4 08662 00041 1 1 SHIELD COMPONENT LGE 28480 08662 00041 A19MP5 08662 00039 7 1 SHIELD CKT LGE 28480 08662 00039 1901 1854 0477 7 TRANSISTOR NPN 2N2222A 51 18 PD 500MW 04713 2N2222A 1902 1853 0020 4 TRANSISTOR PNP SI PD 300MW FT 150 2 28480 1853 0020 1903 1853 0020 4 TRANSISTOR PNP SI PD
196. 00 24546 C4 1 8 T0 3161 F 71826 0757 0394 0 RESISTOR 51 1 1 125W TC 0 100 24546 C4 1 8 TO 53F 1 F A71R27 0698 0084 9 RESISTOR 2 15K 1 125W F TC 0 4 100 24546 C4 1 8 T0 2151 F A71R28 0598 3441 8 RESISTOR 215 1 125W F TC 0 100 24546 C4 1 8 T0 215R F A71R29 0698 6317 3 1 RESISTOR 500 1 125W TC 0 25 03888 PMES55 1 8 T9 500R B A71R30 0699 0825 8 1 RESISTOR 281 2 1 125W TC 0 25 28480 0699 0825 to Section 7 for update inforiatier bacetery elected opponent peter Section 53 A Forais quero henge 6 158 rev 164 UL90 _ _ ee ee ua a re 2 6JUL90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C D int Mfr escription Part Number Designation Number D A71R31 0699 1655 4 RESISTOR 158 1 196 125W TC 04 25 28480 0699 1655 A71R32 0699 1637 RESISTOR 203 2 1 125W TC 0 25 28480 0699 1637 A71R33 07570274 5 RESISTOR 1 21K 1 125W 9 100 24546 C4 1 8 TO 121 1 F A71F34 0757 0401 0 RESISTOR 100 1 125W TC a 04 100 24546 CA 1 8 TO 101 F A71R35 0698 3154 0 RESISTOR 4 22K 1 125W TC 0 100 24546 1 8 70 4221 7 1836 0757 0394 0 RESISTOR 51 1 1 125W 0 100 24546 CA 1 8 TO 51R1 F A71R37 0698 0084 9 RESISTOR 2 15K 1 125W TC 20 100 24546 4 1 8 70 2151 A71R38 0698 3441 8 RESISTOR 215 1 125W TC 04 100 24546 C4 1 8 T0 215R F A71R39 0757 0444 1 RESISTO
197. 0012 1853 0414 0 1 TRANSISTOR 236423 SI 66 PD 35W 04713 2N6423 0340 0681 5 INSULATOR XSTR THRM CNDCT GRA 28480 0340 0681 2190 0004 9 WASHER LK INTL T NO 4 115 IN ID 28480 2190 0004 2200 0141 e SCREW MACH 4 40 3124N LG PAN HD POZI 28480 2200 0141 thefer Section 7 for update Yaetets celectesi Section 2 1 A Fijata pario Range 6 40 rev 1OJULIO es 1 Ss 2 22 25 2E 8901B Reference Designation 10013 At10Q14 A10R1 A1OR2 A10R3 A1TORA A10R5 A10R6 1087 A10R8 A10R9 A10R10 A10R11 A10R12 10 13 10 14 A10R15 A10R16 10817 A10R18 A10R19 A10R20 Al0R21 A10R22 A10R23 A1YOR24 A10R25 A10R26 A10R27 A10R28 A10R29 A10R30 10831 A10R32 A10R34 A10R35 A10R36 A10R37 A10R38 A10R39 A10R40 4 1 A10R43 A10R44 10845 A10R46 Ecc Yum rev 16 JUL90 HP Part Number 1854 0474 1854 0474 0757 0438 0698 0085 0811 3290 0811 3293 0698 3132 0698 3132 0757 0289 0757 0280 0757 0289 0757 0416 0757 0420 0698 0085 0757 0420 0698 0085 0757 0416 0757 0280 07570438 0757 0416 0757 0280 0698 0085 0698 0084 0698 0084 0598 0084 2100 3350 0757 1094 0757 0346 0698 3430 0757 0401 0757 0401 07570346 0757 0442 0698 3624 0757 0438 0698 3601 0757 0401 0757 0444 0757 0438 0698 0084 0757 0442 07570442 0698 3444 0698 3136 0757 044
198. 004 1826 0059 2 OP GP 99 PKG 01295 LM201AL A50U5 1826 0059 2 99 PKG 01295 LM201AL 50 6 1826 0180 0 MONO ASTBL 01295 555 5007 1820 1963 2 IC CMOS D TYPE POS EDGE TRIG DUAL 3 585 0401 ASOUB 1826 0138 8 IC COMPARATOR GP QUAD 14 DIP P PKG 01295 LM339N A50u9 1820 1417 0 IC LCH TTL LS D TYPE 4 01295 SN74LS75N 50010 1820 1216 3 TTL LS 3 TO 8 LINE 3 INP 01295 SN74LS138N ASOVR1 1902 0680 7 OIODE ZNR 1N827 6 2V 5 DO 7 PD 4W 24046 1N827 ASOVR2 1902 3059 9 DIODE ZNR 3 83V 5 00 35 4W 28480 1902 3059 ASOVRS 1902 3104 6 3 DIODE ZNR 5 62 5 DO 35 PD 4W 2BABO 1902 3104 th eber ta tes 7 det electe Cormnpotmnctnt te see dina berate rei 16JUL90 6 135 Model 8901B Reference HP Part Designation Number 51 08901 60013 A51C1 0160 3459 51 2 0160 3459 51 3 0160 3459 51 4 0160 3459 51 5 0180 2206 51 6 0160 2199 51 7 0160 3459 51 8 0160 3459 51 9 0160 2199 51 10 51 11 0160 2207 A51C12 0160 2199 A51C13 0180 2206 A51C14 0160 4040 51 15 0180 0228 A51C16 0140 0205 A51C17 0160 3535 51 18 0180 0197 51 19 0160 0574 51 20 0121 0436 AS1C21 0160 0574 51 22 0160 3459 51 23 0160 3459 51 24 0160 3459 51 25 0160 3459 51 1 1901 1098 AS1CR2 1901 1098 2314A TO 2411A 51 0122 0065 24
199. 0078 1250 1425 2190 0124 2950 0078 o N On N en AA amp AN t AOD orn Boc 2 fol aged Ee trp tages bleeds CAPACITOR FXD 2 7 5 200VDC CAPACITOR FXD 1UF 20 SOVDC CAPACITOR FXD 2 7PF 5 200VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1 100VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXO 1UF 20 50VDC CER CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 470PF 20 100VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1UF 20 S0VDC CER CAPACITOR FXD 470PF 20 100VDC CER CAPACITOR FXD 3UF 20 SOVDC CER CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 100PF 20 200VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXO 1UF 10 100VDC CER NOT ASSIGNED CAPACITOR FXD 1UF 20 50VDC CER NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED DIODE GEN 180V 200MA DO 7 DIODE VVC 2 2PR 7 BVR 30V DIODE VVC 2 2PR 7 BVR 30V DIODE VVC 2 2PR 7 BVR 30V DIODE VVC 2 2PR 7 BVR 30V DIODE GEN PRP 180V 200MA DO 7 DIODE PIN DIODE PIN DIODE PIN DIODE GEN PRP 180V 200MA DO 7 CORE SHIELDING BEAD CORE SHIELDING BEAD CONNECTOR RF SMC M PC 50 0HM WASHER LK INTL T NO 1
200. 00PF 5 100VDC CER 28480 0160 4822 15 17 0160 4822 2 CAPACITOR FXD 1000 5 100VDC CER 28480 0160 4822 16 18 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 284B0 0160 4832 16 19 0160 4822 2 CAPACITOR FXD 1000PF 5 100VDC CER 28480 0160 4822 16 20 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC 28480 0160 4832 15 21 0180 0058 0 CAPACITOR FXD SOUF 75 10 25 AL 56289 30D506G025CC2 15 22 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 2314A TO 2531A A15C23 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 15 24 0150 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 2544A AND ABOVE A15C23 0160 4822 2 CAPACITOR FXD 1000PF 5 100VDC CER 28480 0160 4822 A15C24 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 Refer to Section update information Factory Selected Cotiponent Kefer te section 51 part change 6 60 rev 16JUL90 a eaaa aa ee EL Lc C Model 8901B Reference Designation A15C25 2314 2531 A15C26 2644A AND ABOVE A15C26 A15C27 2314A TO 3028A A15C28 3060A and above 15 28 2314A 2414 16 29 2422 AND ABOVE 16 29 15 1 A15CR2 15 A15CR4 A15CR5 A15CR6 A15CR7 A15CR8 1531 15 2 2314A TO 2531A 15 1 2544A 3028 3050 AND ABOVE 16 1 A15K2 A15K3 A15KA4 A15K5 A15L1 1512 1513 1514
201. 01 1098 1 A10CR10 1901 0028 5 A10CR11 1901 1098 1 A10CR12 1901 1098 1 A10CR13 1901 0028 5 A10CR14 1901 1098 1 A10CR15 1901 0028 5 10 16 1901 0028 5 Refer to Section 7 for update information rev O1 JUL91 Table 6 3 Replaceable Parts Description POWER SUPPLY REGULATORS ASSEMBLY POWER SUPPLY REGULATORS ASSEMBLY POWER SUPPLY REGULATORS ASSEMBLY CAPACITOR FXD 33UF 10 10VDC TA CAPACITOR EXD 4700PF 10 100VDC CER CAPACITOR FXD 4700PF 10 100VDC CER CAPACITOR FXD 22UF 10 50VDC CER CAPACITOR FXD 10UF 10 20VDC TA CAPACITOR FXD 15UF 4 1096 20VDC TA CAPACITOR FXD 15UF 4 1096 20VDC TA CAPACITOR FXD 01UF 10 100VDC CER CAPACITOR FXD 22UF 1096 35VDC TA CAPACITOR FXD 6 8UF 10 35VDC TA CAPACITOR FXD 220PF 5 100VDC CER CAPACITOR FXD 6 8UF 10 35VDC CAPACITOR FXD 1000PF 5 100VDC CER CAPACITOR FXD 2200PF 10 100VDC CER CAPACITOR FXD 2200PF 10 100VDC CER CAPACITOR FXD 3 3UF 1096 50VDC CAPACITOR FXD 22UF 10 50VDC CER CAPACITOR FXD 33UF 10 10VDC CAPACITOF FXD 22UF 10 50VDC CER CAPACITOR FXD 33UF 10 10VDC TA DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 184150 SOV 200M1 4NS DIODE PWR RECT 400V 750MA DO 29 DIODE PWR RECT 400V 750MA DO 29 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 14 150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE PWR RECT 400V 750MA D
202. 01 80037 3 MATCH DIODE SET 28480 08901 80037 AACRB 08901 80037 3 MATCH DIODE SET 28480 08901 80037 AACRS 08901 80037 3 MATCH DIODE SET 28480 08901 80037 AACR10 1901 0518 B 28 DIODE SM SIG SCHOTTKY 28480 1901 0518 AACR11 1901 0518 B DIODE SM SIG SCHOTTKY 28480 1901 0518 ASCRI2 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 AACR13 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 19010518 4 14 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9N171 1N4150 AACR15 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9N171 1N4150 PAACR16 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA ANS 9N171 1N4150 4051 1990 0325 2 2 LED LAMP LUM INT 800UCD IF 50MA MAX 28480 5082 4403 A4DS2 1990 0325 2 LED LAMP LUM INT 800UCD IF 50MA MAX 28480 5082 4403 AAS 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 10 1954N ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THO 067 IN THK 28480 2950 0078 2 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T 10 195 IN 1D 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A4J3 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 21900124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 AALI 9140 0098 3 2 INDUCTOR RF CH MLD 2 2UH 10 28480 9140 0098 AAL2 9140 0098 3 INDUCTOR RF CH MLD 2 2UH 10 28480 9140 0098 2413 9100 2272 5 2 INDUC
203. 0160 4830 A19C17 0160 4822 2 CAPACITOR FXD 1000 5 100VDC CER 28480 0160 4822 A19C18 0160 4832 4 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 4832 A19C19 NOT ASSIGNEO A19C20 NOT ASSIGNED A19C21 0160 4835 7 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4835 A19C22 0160 4835 y CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4835 A19C23 0160 4835 7 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4835 A19C24 0160 4835 7 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4835 A19C25 0160 4832 4 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 4832 A19C26 0160 4835 7 CAPACITOR FXD 1UF 20 50VDC CER 28480 0150 4835 19 27 0160 4832 4 CAPACITOR FXD O1UF 20 100VDC CER 28480 01664832 A19C28 NOT ASSIGNED 19 29 0160 0690 4 2 CAPACITOR FXD 1 5PF 100VDC CER 28480 0160 0690 A19C30 0160 4832 4 CAPACITOR FXD 010 20 100VDC CER 28480 0160 4832 A19C31 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 A19C32 0160 3877 5 CAPACITOR FXD 100 20 200VDC CER 28480 0160 3877 A19C33 0160 3877 5 CAPACITOR FXD 100 20 200VDC 28480 0160 3877 A19C34 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3279 A19C35 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 A19C35 0160 3877 5 CAPACITOR FXD 100 20 200VDC CER 28480 0160 3877 19 37 0160 0871 0 7 CAPACITOR FXD 470 20 100VDC CER 28480 0160 0571 AI9C38 0160 4389 6 CAPACITOR FXD 100 5 200VDC CER 28480 0160 4389 19 39 01
204. 0180 0197 Qty tRefer to Section 7 for update information rev 01JULGI Table 6 3 Replaceable Parts Description RF INPUT CONTROL ASSEMBLY RF INPUT CONTROL ASSEMBLY RF INPUT CONTROL ASSEMBLY NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED RESISTOR FIXED ATTENUATION 2008 RESISTOR FIXED ATTENUATION 10DB RESISTOR FIXED ATTENUATION 20DB CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD O1UF 10 100VDC CER CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 1UF 20 50 0 CER CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 68UF 1096 10VDC TA CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 1000PF 5 100VDC CER CAPACITOR FXD 2 2UF 10 20VDC CAPACITOR FXD 2 2UF 10 20VDC TA Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 56289 56289 Factory Selected Component Refer to Section 5 Replaceable Parts Mfr Part Number 08901 60183 08901 60256 08901 60313 0699 1289 0699 1288 0699 1289 0160 3879 0160 4832 0160 6222 0160 4106 0160 0576 0160 4835 0180 2929 0160 0576 0160 3878 0160 4835 0160 4822 1500225 9020 2 1500225 9020 2 A Errata part change 6 59 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part
205. 040 A20CR14 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR15 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR16 1901 0040 1 OIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR17 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A20CR18 1801 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A20CR19 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A20C R20 1901 0040 1 DIODE SWITCHING 30V 5 2NS 35 28480 1901 0040 A20CR21 1901 0040 1 DIODE SWITCHING 30V 50MA 2NS DO 35 28480 1901 0040 A20CR22 1901 0040 1 DIODE SWITCHING 30V SOMA 2NS 00 35 28480 1901 0040 A20CR23 1901 0040 1 DIODE SWITCHING 30V SOMA 2NS 00 35 28480 1901 0040 A20CR24 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A20CR25 1901 0040 1 DIODE SWITCHING 30V SOMA 2NS 00 35 28480 1901 0040 lo section 7 for update bactore celected Ceomponcut Heler 5 S Errata pari clange 6 91 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Mfr Designation Number D Qty Description Code Mfr Part Number A20 08901 60185 SERIAL PREFIX 2315A TO 2622A A20CR26 1901 0518 B DIODE SM SIG SCHOTTKY 28480 1901 0518 A20CR27 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 20 1 9170 0847 3 CORE SHIELDING BEAD 28480 9170 0847 A20MP1 08901 00104 7 1 COVER LO CONT BD 28480 08901 00104 2360 0113 2 SCREW MACH 6 32 254N LG PAN HO POZI 00000 ORDER BY DESCRIPTION 2001 1854 04
206. 0459 A54Q7 1855 0235 7 1 TRANSISTOR J FET D MODE 52 Si 28480 18550235 54 1853 0459 3 TRANSISTOR PNP Si PD 625MW 200MHZ 28480 1853 0459 5409 1854 0404 9 TRANSISTOR NPN SI TO 18 360 28480 1854 0404 54 10 1854 0404 0 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0404 A5AQ11 1855 0420 2 3 TRANSISTOR J FET 2 4391 D MODE 01295 2 4391 A54Q12 1855 0420 2 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 2N4391 54013 1854 0404 0 TRANSISTOR NPN SI 18 360MW 28480 1854 0404 A54Q14 1854 0404 9 TRANSISTOR NPN SI 18 PD 360MW 28480 18540404 5481 0699 0678 9 4 RESISTOR 900 01 1W F TC 2 0 5 28480 0699 0678 A5AR2 0699 0681 4 4 RESISTOR 100 01 1W TC 04 5 28480 0699 0681 AS5AR3 0698 3441 8 18 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F A54R4 0698 3441 8 RESISTOR 215 1 125W TC 04 100 24546 C4 1 8 T0 215R F A54R5 0757 0274 14 RESISTOR 1 21 1 125W TC 0 4 100 24546 4 1 8 1211 5 6 0698 3441 8 RESISTOR 215 1 125W F TC 0 100 24546 C4 1 8 T0 215R F AS4R7 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 4 100 24546 4 118 70 2151 A54R8 0695 0082 7 RESISTOR 464 196 125W TC 0 100 24546 4 1 8 0 4640 ASARS 0757 0274 5 RESISTOR 1 21K 1 125W TC O 100 24546 4 1 8 1211 A54R10 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 TO 215F F 54 11 0699 0678 9 RESISTOR 900 0196 0
207. 0486 8 2360 0123 4 5001 5501 5 02901 60233 9 1 f ande na Table 6 3 Replaceable Parts Description SERIES REGULATOR HEAT SINK ASSEMBLY CLAMP CABLE 312 DIA 375 WD NYL WASHER LK HLCL NO 6 341 IN ID SCREW MACH 6 32 875 IN LG PAN HD POZI NUT HEX DBL CHAM 6 32 THD 1094N THK WASHER FL MTLC NO 6 149 IN ID HEATSINK SCREW MACH 4 40 375 IN LG PAN HD POZ TRANSISTOR PNP 2 5876 SI TO 3 PD 150W INSULATOR COVER NYLON SCREW MACH 6 32 6254N LG PAN HD POZ TRANS SPACER TRANSISTOR PNP 2N6050 SI DARL TO 3 INSULATOR COVER NYLON SCREW MACH 6 32 625 IN LG PAN HD POZI TRANS SPACER TO3 TRANSISTOR NPN 2N6057 SI PD 150W INSULATOR COVER NYLON SCREW MACH 6 32 625 IN LG PAN HD POZI TRANS SPACER TRANSISTOR NPN 2N5878 61 TO 3 PD 150W INSULATOR COVER NYLON SCREW MACH 6 32 625 IN LG PAN HD POZI TRANS SPACER HEATSINK CABLE 01B oco anne Tae Mfr Code 28480 28480 28480 00000 28480 28480 28480 00000 04713 28480 00000 28480 28480 28480 00000 28480 04713 28480 00000 28480 01295 28480 00000 28480 28480 tage t 3 Replaceable Parts Mfr Part Number 08901 60181 1400 0017 2190 0006 ORDER BY DESCRIPTION 2420 0002 3050 0227 08901 20218 ORDER BY DESCRIPTION 2N5876 0340 0486 ORDER BY DESCRIPTION 5001 5501 1853 0411 0340 0486 ORDER BY DESCRIPTION 5001 5501 2N6057 0340
208. 0698 7260 7 4 RESISTOR 10K 1 05W TC 0 100 24546 C3 1 8 T0 1002 F A20R6 0699 0381 1 1 RESISTOR 40K 1 1W TC 0 15 28480 0699 0381 A20R7 0699 0122 8 2 RESISTOR 4 8K 1 125W TC 0 25 28480 0699 0122 A20R8 0699 0122 8 RESISTOR 4 8K 1 125W 0 25 28480 0699 0122 2099 0698 6360 6 1 RESISTOR 10K 195 125W 0 25 28480 0698 6360 A20R10 0698 8049 2 1 RESISTOR 64K 1 125W TC 204 25 19701 MF4C1 8 T9 6402 B A20R11 0757 0289 2 3 RESISTOR 13 3K 1 125W TC 04 100 19701 MF4C1 8 TO 1332 F A20R12 0698 3152 8 2 RESISTOR 3 48K 1 125W TC 0 100 24546 C4 1 8 T0 348 1 F A20R13 0698 3154 0 4 RESISTOR 4 22K 1 125W TC 0 100 24546 4 1 8 10 4221 A20R14 0698 8212 1 1 RESISTOR 6K 25 125W TC 0 25 19701 4 1 4 19 6001 A20R15 0698 7260 7 RESISTOR 10K 1 05W 0 100 24546 C3 1 8 T0 1002 F A20R16 1810 0204 6 1 NETWORK RES 8 SIP1 0K OHM X 7 01121 208A102 A20R17 0698 7244 7 4 RESISTOR 2 15K 1 05W TC 0 100 24546 C3 1 8 T0 2151 F A20R18 0698 7244 7 RESISTOR 2 15K 1 OSW TC 34 100 24546 C3 1 8 TO 2151 F A20R19 0698 7279 8 1 RESISTOR 61 9K 1 05W TC 0 100 24546 C3 1 8 T0 6192 F A20R20 0698 3449 6 1 RESISTOR 28 7K 1 125W TC 04 100 24546 C4 1 8 T0 2872 F A20R21 0757 0289 2 RESISTOR 13 3K 1 125W TC 04 100 19701 MF4C1 8 10 1332 F A20R22 0757 0290 5 1 RESISTOR 6 19K 1 125W TC 0 100 19701 1 8 0 6191 A20R23 0698 008
209. 07263 07263 01295 01295 01295 01295 01295 07263 28480 01295 01295 28480 01295 01295 01295 01295 28480 Factory selected Cotnponent Refer 10 Section 51 Model 8901 Mfr Part Number C4 1 8 TO 511F F 1810 0136 4 1 8 1961 C3 1 8 TO 316R F C4 1 8 TO 1002 F 3101 1973 1200 0485 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1820 1689 SN74LS03N SN74LS74AN SN74LS14N 1820 1689 SN74LSO3N 74LS260PC 9324PC SN74LS688N SN74LS03N 5 741 503 SN74LS138N SN7438N 3861EPC 1200 0654 SN74LS74AN SN74LS74AN 08901 80004 SN7400N SN74LS04N SN74LS05N 5 741505 1902 3182 A Errata part change rev 16JUL90 Model 8901B Reference Designation A15 2314A 2414A A165 2422A TO 3028A A16 3050A AND ABOVE A15 2314A TO 2414A AISATI 16 2 15 2422 AND ABOVE 1 1 15 72 15 2314 TO 2531 15 1 2544A AND ABOVE 15 1 2314 3028 A15C2 3050A and above Al5C2 2314 2631 15 3 2544 AND ABOVE 15 3 15 4 2314 2531 15 5 15 6 2644A AND ABOVE 15 5 Al amp C6 A15C7 15 8 Number 08901 60183 08901 60256 08901 60313 0699 1289 0699 1288 0699 1289 0160 3879 0160 4832 0160 6222 0160 4106 0160 0576 0160 4835 0180 2929 0160 0576 0160 3878 0160 4835 0160 4822 0180 0197
210. 08660 60369 08660 60369 1251 0600 1251 0600 0410 1181 1200 0758 0410 1182 1200 0758 0410 1615 1400 0973 0410 1615 1400 0973 part 6 105 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C ei Mfr Designation Number D Qty Description Code Mfr Part Number A23 A23 08901 60144 1 1 SAMPLER ASSEMBLY 28480 08901 60144 A23C1 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A23C2 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A23C3 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A23C4 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0160 0571 A23C5 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A23C6 0180 2617 1 7 CAPACITOR FXD 6 8UF 10 35VDC 25088 D6R8GS1B35K XA23C7 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A23C8 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 23 9 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 A23C10 0160 4084 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 23 11 0180 2618 2 1 CAPACITOR FXD 33UF 10 10VDC 25088 D33GS1B10K A23C12 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC 25088 D6R8GS1835K A23C13 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC TA 25088 D6R8GS1B35K 23 14 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 23 15 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC TA
211. 08901 60081 which facilitates troubleshooting of the A13 Controller and A14 Remote Interface Assemblies see Figure 8 1 The kit also contains a special conductive polyurethane foam pad HP 4208 0094 that is required for the protection of MOS devices as cautioned in paragraph 8 3 v iot anno A dab AOA DE NER i e 2 l 5 a od Figure 8A 1 Assemblies on Extender Boards 8 3 eee ee SSS Service Model 8901B Heat Staking Tool The front panel pushbutton switches have small plastic pins protruding from the back These tabs fit through holes in the front panel printed circuit board assembly 1 and are melted down to hold the switch in place This process is known as heat staking The heat staking tool is a standard soldering a special tip attached see Figure 8A 2 The special tip may be ordered as HP part number 5020 8160 HEAT STAKING BACK SIDE CIRCUIT 80ARD TOO HOT pra MODIFIED AS TOO COLO FRONT SIOE OF CIRCUIT BOARD TEMPERATURE SUPPORT ANVIL Figure 8A 2 Heat Staking Assembly Locations Assemblies in the Modulation Analyzer are numbered sequentially from front to back left to right and top to bottom as shown in Figures 8A 3 and 8A 3a However to facilitate the direct use of assemblies from other HP 8901 or 8902 series instruments the sequence in the Audio Section of the instrument is inte
212. 0983 24546 24546 24546 24546 24546 24546 24546 24546 08901 60024 08901 60274 SERIAL PREFIX 2314 TO 2806A C4 1 8 T0 7501 F MF4C 1 8 T0 1332 F C4 1 8 T0 1002 F C4 1 8 TO 2372 F 208A471 3 1 8 75 0 C3 1 8 TO 51R1 F C4 1 8 TO 261R F 208 471 208 471 C3 1 8 TO 51R1 F C3 1 8 T0 1002 F C3 1 8 TO 1002 F C3 1 8 TO 75RO0 F C3 1 8 TO 75RO F C4 1 8 TO 751 F C4 1 8 TO 751R F C3 1 8 TO 19R6 F C4 1 8 T0 6192 F C3 1 8 T0 1001 F C4 1 8 T0 2871 F C4 1 8 T0 6192 F C3 1 8 TO 511R8 F 50 201 C4 1 8 TO 511R F C4 1 8 T0 511R F C4 1 8 T0 68A1 F C4 1 8 T0 68R1 F C3 1 8 TO 511R F C4 1 8 T0 511R F C4 1 8 T0 10R0 F C4 1 8 TO 511R F Prata port hanye 6 81 Replaceable Parts Reference Designation 19 A19R50 19851 19 52 19 53 A19R54 19 55 19 56 A19R57 A19R58 A19R59 A19R60 A19R61 A19R62 2314A TO 2622A A19R63 2622A TO 2806A A19R63 A19R64 A19R65 A19R66 A19R67 A19R68 A19R69 A19R70 A19R71 A19R72 19873 19874 A19H75 A19R76 A19R77 A19R78 A19R79 A19R80 A19R81 A19H82 A19R8 3 19 84 A19R85 2314A TO 2348A A19R86 2406A TO 2806A 19 86 HP Part Number 0757 0416 0757 0397 0757 0397 0757 0397 0757 0416 0757 0416 0757 0416 0698 3132 0698 3132 0698 3132 0757 0442 0757 0422 0698 3158 0757 0276 0757 0398 0757 0416 0757 0465 0757 0397 0757 0397 0698 3447 0757 0397 0698 0083 07570422
213. 0V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA ANS DIODE SWITCHING 1N4150 50V 200MA 4NS CONNECTOR RF SMC M SGL HOLE RR 50 OHM CONNECTOR RF SMC M SGL HOLE RR 50 OHM INDUCTOR RF CH MLD 4 7UH 5 166DX 385LG INDUCTOR RF CH MLD 100UH 5 166DX 385LG INDUCTOR RF CH MLD 100UH 5 166DX 385LG CVR AUDIO MEAS SCREW MACH 6 32 25 IN LG PAN HD POZI WASHER LK EXT T NO 6 141 IN ID RESISTOR 6 81 1 125W TC 2 0 100 RESISTOR 6 81 1 125W TC 0 100 RESISTOR 100K 1 1W 204 15 RESISTOR 1K 1 125W TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 100K 1 1W TC 204 15 NETWORK RES 8 SIP10 0K OHM X 7 RESISTOR 1K 1 125W 0 100 RESISTOR 3 717K 1 F TC 0 15 RESISTOR 24 14 1 1W 204 15 RESISTOR 4 64K 1 0 15 RESISTOR 3 622 1 1W 0 15 RESISTOR 72 42K 1 1W TC 04 15 RESISTOR 1K 1 125W 0 100 NOT ASSIGNED RESISTOR 51 1K 1 125W 0 100 RESISTOR 14 16K 1 IW TC 0 15 RESISTOR 4 64 1 1W TC 0 15 NOT ASSIGNED RESISTOR 17 55K 14 1W 0 15 NOT ASSIGNED RESISTOR 2 712K 1 3W F TC 04 15 RESISTOR 4 64 196 1W TC 0 15 RESISTOR 54 1 IWF TC 0 15 RESISTOR 49 25 1 0 15 RESISTOR 28 12 196 1W F 0 15 RESISTOR 3 16 1 125W TC O 100 RESISTOR 103 2K
214. 0VDC CER 28480 0160 4389 27 8 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C9 NOT ASSIGNED A27C10 0160 4389 6 CAPACITOR FXD 100PF SPF 200VDC CER 28480 0160 4389 A27C11 0160 4389 6 CAPACITOR FXD 100PF 5PF 200VDC CER 28480 0160 4389 A27C12 0160 4389 6 CAPACITOR FXD 100 5PF 200VDC CER 28480 0160 4389 A27C13 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C14 0160 4389 6 CAPACITOR FXD 100 5PF 200VDC CER 28480 0160 4389 A27C15 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 27 16 0160 4389 6 CAPACITOR FXD 100PF 5PF 200VDC CER 28480 0160 4389 27 17 0160 4389 6 CAPACITOR FXD 100PF 5PF 200VDC CER 28480 0160 4389 27 18 0160 4389 6 CAPACITOR FXD 100PF 200VDC CER 28480 0160 4389 27 19 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C20 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C21 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A27C22 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A27C23 0160 0576 5 CAPACITOR FXD 10 20 50VDC CER 28480 0160 0576 A27C24 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A27J1 1251 8417 3 2 CONN POST HDR 16 28480 1251 8417 27 2 1251 8417 3 CONN POST 16 28480 1251 8417 A27J3 1200 0507 9 16 DIP SLDR 28480 1200 0507 1251 4460 8 CLIP CABLE PLUG RTNG DUAL INLINE 16 CONT 28480 1251 4460 A27J4
215. 0VDC MICA 28480 0160 2028 A21C5 0160 2534 9 CAPACITOR FXD 300PF 4 195 300VDC MICA 28480 0160 2534 A21J1 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A21J2 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 185 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 2111 9140 0112 2 5 INDUCTOR RF CH MLD 4 7UH 10 28480 9140 0112 2112 9140 0112 2 INDUCTOR RF CH MLO 4 7UH 10 28480 9140 0112 21 1 08901 00025 1 1 COVER FILTER 28480 08901 00025 21 2 5001 0176 0 GROUND STRAP 28480 5001 0176 21 5001 0176 0 GROUND STRAP 28480 5001 0176 21 4 08901 00044 4 1 GASKT VCOX FILTER 28480 0890100044 section F for oimponent Refer section 5a briata yout change rev I6JUL90 6 10 se ee Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Q Mfr ty Description Mfr Part Number Designation Number D y P Code A22 08901 60007 5 1 LOW FREQUENCY VCXO ASSEMBLY 28480 08901 60007 22 1 0180 0094 4 CAPACITOR FXD 100UF 75 10 25 AL 56289 30D107G025DD2 A22C2 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 22 3 0160 3459 5 CAPACITOR FXD 020
216. 1 W652 2314 TO 2412A W53 2413A AND ABOVE W53 41 16 171 90 Ce ange HP Part Number 08901 60179 08901 60241 08901 60059 08901 60072 1251 3275 1251 3897 1400 0510 08901 60230 1400 1151 08902 60039 1400 1151 08901 60231 1400 1511 08901 60231 1400 1151 08901 60071 1251 3275 1251 3897 08901 60232 1251 3275 1251 3897 08901 60176 1400 0510 6120 1378 08901 50258 Q Qty o for update Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS WIRE HARNESS ASSY RF POWER EXCEPT OPT 001 WIRE HARNESS ASSY RF POWER OPT 001 ONLY NOT ASSIGNED COAX CABLE ASSY 956 A19J2 A24J1 WIRING HARNESS DIGTL A26J3 A27J4 CONNECTOR 6 PIN F POST TYPE CONTACT CONN UMW POST TYPE FEM CRP CLAMP CABLE 15 DIA 62 WD NYL RIBBON CABLE ASSY A25J2 A27J2 CLAMP CABLE 625 WD NYL RIBBON CABLE ASSY A25J2 A27J2 CLAMP CABLE 625 WO NYL RIBBON CABLE ASSY A27J1 2833 CABLE CLAMP RIBBON CABLE ASSY A25J3 A28J2 CLAMP CABLE 625 WD NYL WIRING HARNESS AUDIO A25J4 A26J2 CONNECTOR 6 PIN F POST TYPE CONTACT CONN U W POST TYPE CRP WIRING HARNESS A26J6 A28J1 CONNECTOR 6 PIN F POST TYPE CONTACT CONN UAV POST TYPE FEM CRP WIRING HARNESS A25J5 AM OUTPUT FM OUTPUT RECORDER OUTPUT AND FREO OFFSET TTL OUT CLAMP CABLE 15 DIA 62 WD NYL CABLE ASSY 18AWG 3 CNDCT JGK JKT NOT ASSIGN
217. 1 125W F TC 0 50 28480 0699 0847 5 50 0699 0847 4 RESISTOR 1 96K 1 125W TC 0 50 28480 0699 0847 2635A AND ABOVE A6R44 R50 NOT ASSIGNED tkefe bo section 7 for epdate information kactory selected Component 1 c v part change 6 29 Replaceable Parts 8901B Table 6 3 Replaceable Parts Reference HP Part C Qt D Mfr escription Mfr Part Number Designation Number D y P Code A5RS51 0757 0442 9 RESISTOR 10K 196 125W TC 2 0 100 24546 C4 1 8 T0 1002 F 5 52 0698 6631 4 1 RESISTOR 2 5 148 125W TC 0 25 28480 0698 6631 ASRS3 07570442 9 RESISTOR 10K 1 125W TC 04 100 24546 4 1 8 0 1002 5 54 0698 3156 2 RESISTOR 14 7K 1 125W TC 20 100 24546 4 1 8 0 1472 ASR55 0698 6362 8 1 RESISTOR 1K 1 125W TC 04 25 28480 0698 6362 5 56 0699 0847 4 RESISTOR 1 96 1 125W TC 04 50 28480 0699 0847 A5R57 07570467 8 3 RESISTOR 121K 1 125W 0 100 24546 C4 1 8 T0 1213 F ASRSB 07570463 4 3 RESISTOR 82 5K 1 125W TC 20 100 24546 4 1 8 0 8252 5 59 0698 3157 3 RESISTOR 19 6K 1 125W 0 4 100 24546 4 1 8 0 1962 60 0698 3157 3 RESISTOR 19 6K 1 125W 0 100 24546 C4 1 8 T0 1962 F 5 61 0698 3157 3 RESISTOR 19 6K 1 125W TC 0 100 24546 1 8 0 1962 A5R62 0757 0467 8 RESISTOR 121K 1 125W 0 100 24546 C4 1 8 T0 1213 F ASR63 0698 3243 8 RESISTOR 178K
218. 1 1 125W 0 100 24546 4 1 8 261 A19R116 0698 3132 4 RESISTOR 261 1 125W TC 0 100 24546 C4 1 8 TO 261R F A19TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A19TP2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ SQ 28480 1251 0600 PP acter tede pel lt io Sesion sa pe T bei rev 16JUCL90 6 83 SO NM tater 6 54 np ade ondeirnaatict 7 elected Competent cete 4 Parada Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Q MT Mfr ty Description Mfr Part Number Designation Number y 19 08901 60024 08901 60274 SERIAL PREFIX 2314 2806A A19U1 1820 1225 4 1 IC FF ECL D M S DUAL 04713 MC10231P A19U2 1826 0372 2 6 IC MISC 8 DIP P PKG 28480 1826 0372 A19US 1826 0013 8 IC OP AMP LOW NOISE TO 99 PKG 06665 SSS741CJ A19U4 08901 67002 4 1 FREQUENCY DUBLER 28480 08901 67002 0340 0850 0 INSULATOR XSTR TFE 28480 0340 0850 1251 1556 7 CONNECTOR SGL CONT SKT 018 IN BSC SZ 28480 1251 1556 1905 1826 0372 2 IC MISC 8 DIP P PKG 28480 1826 0372 A19U6 1820 0817 8 IC FF ECL D M S DUAL 04713 MC10131P 2314A 2619A 1907 1820 1940 0 2 CNTR ECL BIN SYNCHRO POS EDGE TRIG 28480 1820 1940 1908 1820 1940 0 CNTR ECL BIN SYNCHRO POS EDGE TRIG 28480 1820 1940 2622A 2806A 1907 1820
219. 1 1 1 125W 0 100 24546 C4 1 8 TO 51R1 F A23R58 0698 0082 7 RESISTOR 464 1 125W 0 100 24546 1 8 70 4640 A23R59 0757 0379 1 RESISTOR 12 1 1 125W TC 0 100 19701 MF4C 1 8 TO 12R 1 A23R60 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F A23R61 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 51 1R F A23R62 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 511R F A23R63 0757 0280 3 RESISTOR 1K 1 125W F TC a 0 100 24546 C4 1 8 T0 1001 F 2371 08901 80042 0 SAMPLER TRANS 28480 08301 80042 A23TP 1 1251 0600 0 CONNECTOR SGL CONT 1 14 MM BSC SZ SQ 28480 1251 0600 A23U1 1826 0138 8 IC COMPARATOR GP QUAD 14 DIP P PKG 01295 LM339N A23U2 1826 0413 2 AMP LOW BIAS H IMPD 99 PKG 34371 HA2 2605 5 A2S3VR1 1902 0041 4 DIODE ZNR 5 11V 5 DO 35 PO 4 28480 1902 0041 A23VR2 19020041 4 DIODE ZNR 5 11V 5 DO 35 PD 4 28480 1902 0041 A23VR3 1902 0041 4 DIODE ZNR 5 11V 5 DO 35 28480 1902 0041 A23VR4 1902 0554 4 DIODE ZNR 10V 5 PD 1W IR 10UA 28480 1902 0554 A23VR5 1902 0554 4 DIOOE ZNR 10V 5 PD IW IR 10UA 28480 1902 0554 A23W1 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 e 7 inborniatien meter Geel pee Sere aatia part change 6 110 rev J6 JULIO rev 16 1 7 90 Model 8901 Replaceable Parts
220. 1 5169 A27XA1 XA10 NOT ASSIGNED 27 1251 6050 6 5 CONNECTOR PC EDGE 22 CONTIROW 2 ROWS 28480 1251 6050 27 12 1251 6050 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 6059 27 128 1251 6052 8 3 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 6052 A27XA13A 1251 6050 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 6050 A27XA13B 1251 6052 8 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 6052 A27XA14A 1251 6050 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 6050 A27XA14B 1251 6052 8 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 6052 Reto to 7 dor hassosy celectiid 7 nipnpeonent trai tarata pot es ae 6 119 6 120 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Ot D nf Mfr escription Mfr Part Number Designation Number D y A27 08902 60102 2 4 DIGITAL MOTHER BOARD ASSEMBLY 28480 08902 60102 27 1 0160 4389 6 28 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 27 2 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 A27C3 0160 4389 6 CAPACITOR FXD 100PF 5 200VDC CER 28480 0160 4389 27 4 0160 4389 6 100PF 5 200VDC CER 28480 0160 4389 27 5 0160 4389 6 CAPACITOR FXD 100 200VDC 28480 0160 4389 27 6 0160 4389 6 CAPACITOR FXD 100 5PF 200VDC CER 28480 0160 4389 27 7 0160 4389 6 CAPACITOR FXD 100 5 20
221. 1 7998 3 CONN POST TYPE 100 PiN SPCG 16 CONT 28480 1251 7998 A2BXA1 XA14 NOT ASSIGNED A28XA15 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 28 16 1251 0472 4 7 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 12510472 28 17 1251 0472 4 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 A2BXA18 1251 0472 4 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 28 19 1251 2025 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 A28XA20 1251 1365 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 28 21 1251 0472 4 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 A2BXA22 1251 0472 4 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 A28XA23 1251 0472 4 CONNECTOR PC EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 28 24 1251 0472 4 EDGE 6 CONT ROW 2 ROWS 28480 1251 0472 tiefer Sertion y tea apeere gafas puo TA garages sleet dove os bie deg bes see iron sn eo hitb aba rev 16JUL90O Model 8901B Reference Designation A29 29 A29MP1 A29MP2 A29Q1 2903 2904 A29W1 a rev 16JUL90 Tere tje Number D 08901 60181 6 1 1400 0017 0 1 2190 0006 1 1 2360 0127 8 1 2420 0002 6 1 3050 0227 3 08901 20218 6 1 2200 0107 6 4 1853 0344 5 1 0340 0486 8 4 2360 0123 4 4 5001 5501 5 4 1853 0411 7 1 0340 0486 8 2360 0123 4 5001 5501 5 1854 0669 9 1 0340 0486 8 2360 0123 4 5001 5501 5 1854 0743 0 1 0340
222. 1 DIODE SWITCHING 1N4150 50V 200MA ANS 3 171 bacsorv Component eter to restren Model 8901B Mfr Part Number 08901 60262 0160 4835 0160 4835 1500156 9020 2 0160 4835 1500156X902082 30D105G150BA2 0160 4801 0160 4832 0160 4801 0160 4832 0160 4832 0160 4807 150D225X9020A2 0160 4814 0160 4832 0160 4832 0160 0161 0160 3324 0160 4832 0180 1997 0160 4832 0160 4822 0160 4822 0160 4832 1901 1085 1901 1085 1 4150 1 4150 1 4150 1N4150 1 4150 1901 0518 1901 0518 1144 150 1 4 150 144150 1 4150 1 4150 1901 0518 1901 0518 1901 0518 3 4150 A amp obrrara part change rev 16 71 90 Model 8901 Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Description Mfr Mtr Part Number Designation Number D Code 2535A TO 2718A A20CR21 NOT ASSIGNED 2804A AND ABOVE A20CR21 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A20CR22 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 A20CR23 NOT ASSIGNED A20CR24 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 19010518 A20CR25 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 20051 NOT ASSIGNED A20DS2 NOT ASSIGNED 20053 1990 0717 6 LED LAMP LUM INT 800UCD IF 30MA MAX 28480 HLMP 1501 20054 1990 0717 6 LED LAMP LUM INT 800UCD IF 28480 HLMP 1501 A20L1 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A20L2 9100 3922 4 INDUCTOR FIXED 120 1300 H
223. 100 RESISTOR 34 8K 1 125W TC 0 100 RESISTOR 68 1K 1 125W TC 0 100 Factory Selected Component Refer to ec ligt Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28460 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 01121 01121 24546 28480 24546 1 Replaceable Parts Mfr Pa 5041 0252 5041 0943 5041 0252 5041 0319 5041 0484 5041 0351 5041 0252 5041 0252 5041 0319 5041 0386 5041 0508 5041 0286 5041 0286 5041 0451 5041 0252 5041 0252 5041 0319 5041 0386 5041 0835 5041 0832 5041 0829 5041 0838 5041 0252 5041 0252 5041 0319 5041 0386 5041 0836 5041 0833 5041 0830 5041 0839 5041 0252 5041 0252 5041 0319 5041 0386 5041 0837 5041 0834 5041 0831 5041 1672 5041 0252 5041 0252 5041 0310 5041 9386 5041 2753 5041 2750 5041 2751 5041 2752 210A472 208A223 rt Number C4 1 8 T0 2152 F 07570123 C4 1 8 T0 68 124 A Erata change 6 ji a eS SS ee ee Replaceable Parts Reference HP Part C Qty Designation Number AIRE 0757 0199 3 1 7 0698 0082 7 23 188 0698 3453 2 1 A1R9 0757 0461 2 1 10 0757 0461 2 1 11 0757 0447 4 5 A1R12 1610 0402 6 10 AT1R13 1810 0402 6
224. 1251 5169 6 CONNECTOR 6 PIN M POST TYPE 28480 1251 5159 A27XA1 XA10 NOT ASSIGNED A27XA11A 1251 1365 6 5 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 27 12 1251 1365 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1253 1365 A27XA12B 1251 2035 9 3 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 27 1 1251 1365 6 CONNECTOR PC EDGE 22 CONTI IROW 2 ROWS 28480 1251 1365 A27XA138 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 27 14 1251 1365 6 CONNECTOR PC EOGE 22 CONT ROW 2 ROWS 28480 1251 1365 A27XA14B 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 41 section 7 for upedare iuforiiioatien tard ao Getei ZA quart chang rev 1GJULIO Te A MEO GU ee 2 5 2 2 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Qt D Mfr escription 5 Mfr Part Number Designation Number D 4 Code A28 08901 60229 3 1 RF MOTHERBOARD ASSEMBLY 28480 08901 60229 A28C 0160 0576 5 CAPACITOR FXD 20 50 0 CER 26480 0160 0576 A28C2 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A28C3 0160 0576 5 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 0576 28 4 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A28J1 1251 4966 9 1 CONNECTOR 8 PIN M POST TYPE 28480 1251 4966 A28J2 1251 7998 3 CONN POST TYPE 100 PIN SPCG 16 CONT 28480 1251 7998 A28J3 125
225. 1306 thefei 096 7 rev 16JU L90 HP Part C Number D Qty Table 6 3 Replaceable Parts Description 08901 60244 SERIAL PREFIX 2314A TO 2718A 1251 0600 0 1251 0600 0 1251 0600 0 1251 0609 9 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 0 1251 0600 9 1251 0600 0 12510600 0 1818 1968 7 1 1200 0565 9 1 1820 1199 1 1826 0759 9 1 08902 80064 6 1 08902 80068 0 1 08902 80073 7 1 08901 80083 9 1 08901 80089 5 1 08901 80092 9 1 08902 80107 8 1 1200 0553 5 3 1820 1281 2 1 1826 0275 4 1 for update infertuation CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT 1 14 5 52 SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM 8SC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC CMOS 16384 16K STAT RAM 250 NS 3 S SOCKET C 24 CONT DIP SLDR IC INV TTL LS HEX 1 IC COMPARATOR GP QUAD 14 DIP C PKG ROM 3 ROM 3 ROM 3 ROM 3 ROM 3 ROM 3 ROM 3 SOCKET IC 28 CONT DIP SLDR TTL LS
226. 13A AND ABOVE A22CR3 0122 0162 AS1CRA 1901 1098 2314A TO 2411A A51CR5 0122 0065 ASICRE 0122 0065 24134 AND ABOVE 6 5 01220173 51 0122 0173 section 7 for update infortiatien rev 16JUL90 D o o UO oo bh to n9 o Table 6 3 Replaceable Parts Description FM CALIBRATOR ASSEMBLY CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 020 20 100VDC CER 02UF 20 100VDC CER CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 60UF 10 6VDC TA CAPACITOR FXD 5 300VDC MICA CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 020 20 100VDC CER CAPACITOR FXD 30PF 5 300VDC MICA NOT ASSIGNED CAPACITOR FXD 300PF 5 300VDC MICA CAPACITOR FXOD 5 300VDC MICA CAPACITOR FXD 60UF 10 6VDC TA CAPACITOR FXD 1000PF 4 596 100VDC CER CAPACITOR FXD 22UF 10 15VDC CAPACITOR FXD 62PF 5 300VDC MICA CAPACITOR FXD 560PF 5 300VDC MICA CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR FXD 022UF 20 100VDC CER CAPACITOR V TRMR AIR 2 6 23 5PF 350V CAPACITOR FXD 022UF 20 100VDC CER CAPACITOR FXD 020 20 100VDC CER CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 02UF 20 100VDC CER DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE VVC 29PF 3 DIODE VVC 29PF 10 BVR 30 DIO
227. 145 5 RESISTOR 1 1174 01 1W F TC 0 5 28480 0699 0145 A2R39 0757 0400 9 3 RESISTOR 90 9 1 125W F TC 0 100 24546 4 1 8 70 9089 2840 21000552 3 3 RESISTOR TRMR 50 10 C SIDE ADJ 1 TRN 28480 2100 0552 A2RA1 0699 0159 1 1 RESISTOR 860 1 1W TC 0 15 28480 0699 0159 A2RA2 0698 8475 8 RESISTOR 1 799K 1 F TC 2 0 5 28480 0698 8475 A2R43 0698 3434 9 2 RESISTOR 34 8 1 125W TC 0 100 24546 C4 1 8 T0 34R8 F A2R44 2100 0552 3 RESISTOR TRMR 50 10 C SIDE ADJ 1 TRN 28480 2100 0552 A2PAS 0699 0160 4 1 RESISTOR 940 1 1W TC 0 15 28480 0699 0160 2946 0698 3136 8 4 RESISTOR 17 8K 1 125W TC O 100 24546 4 1 8 0 1782 2947 0698 3243 8 2 RESISTOR 178K 1 125W 0 100 24546 4 118 10 1783 A2R48 0698 6414 1 RESISTOR 1K 1 1W TC 0 5 28480 0698 6414 2950 0757 0280 3 RESISTOR 1K 1 125W 04 100 24546 1 8 0 1001 2951 0757 0399 5 2 RESISTOR 82 5 1 125W TC 0 100 24546 C4 1 8 T0 82R5 F 2 1 0837 0027 6 2 THERMISTOR DISC 30 OHM 3 9 C DEG 28480 0837 0027 A2RT2 0839 0011 2 1 THERMISTOR DISC 100 OHM TC 3 8 C DEG 28480 0839 0011 A2RT3 0837 0027 6 THERMISTOR DISC 30 OHM 3 995 C DEG 28480 0837 0027 A2TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A2TP2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A2TP3 1251 0600 0 CONNECTOR SGL CONT 1 14 MM BSC SZ SQ 28480 1251 0600 2 1251 060
228. 15R30 0699 0134 2 2422A AND ABOVE 15829 16 30 A15R31 0698 7209 4 A15R32 0757 0421 4 A15R33 0698 3443 0 A15R34 0698 7212 8 15835 0757 0199 3 15836 0698 8827 4 A15R37 0698 3452 1 Refer to Section for update infosmasion rev 16JUL90 Table 6 3 Replaceable Parts Description RESISTOR 122 1 25W F TC 0 100 NOT ASSIGNED RESISTOR 51 1 196 125W TC 0 100 RESISTOR 21 5K 1 125W TC 0 100 NOT ASSIGNED RESISTOR 122 1 25W F TC O 100 RESISTOR 248 1 25W TC 0 100 RESISTOR 61 1 1 25W F TC 0 100 NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED RESISTOR 75 196 05W F TC 0 100 RESISTOR 825 1 125W TC 0 100 RESISTOR 4 64 1 125W TC 04 100 RESISTOR 21 5K 1 125W TC 0 4 100 RESISTOR 4 64M 1 125W TC 0 100 RESISTOR 96 3 196 5W TC 0 100 NOT ASSIGNED RESISTOR 100 199 125W TC O 100 RESISTOR 71 2 1 25W TC 0 100 RESISTOR 96 3 196 25W TC 0 100 NOT ASSIGNED NOT ASSIGNED RESISTOR 75 1 05W F TC 2 04 100 RESISTOR 825 1 125W F TC 0 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 100 1 05W TC 0 100 RESISTOR 21 5K 1 125W TC 0 100 RESISTOR 1M 1 125W TC 0 100 RESISTOR 147K 1 125W TC 0 100 Mfr Code 28480 24546 24546 28480 28480 28480 24546 24546 28480 24546 28480 28480 24546 28480 28480 24546 24546 24546 24546 24546 28480 24546 bact
229. 160 2459 9 CAPACITOR FXD 020 20 100VDC CER 28480 0160 3459 50 8 0160 3459 9 CAPACITOR FXD 02UF 20 100 CER 28480 0160 3459 50 9 0160 0207 9 1 CAPACITOR FXD 01UF 5 200VDC POLYE 28480 0160 0207 5 10 0180 2619 3 CAPACITOR FXD 22UF 10 15VDC 25088 0226 1815 A50C11 0180 2620 6 CAPACITOR FXD 2 2UF 10 50VDC 25088 D2R2GS1B50K 50 12 0160 3459 9 02UF 4 2096 100VDC CER 28480 0160 3459 50 13 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 14 0180 2619 3 CAPACITOR FXD 22UF 10 15VDC TA 25088 022GS1B15K 50 15 0180 2619 3 CAPACITOR FXD 22UF 10 15VDC 25088 D22GS1B15K 50 16 0160 2199 2 CAPACITOR FXD 5 300VDC MICA 28480 0160 2199 50 17 0160 3455 9 CAPACITOR FXD 02UF 20 100VDC 28480 0160 3459 50 18 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC 28480 0160 3459 50 19 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A50C20 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 21 NOT ASSIGNED 50 22 0160 3454 4 3 CAPACITOR FXD 220PF 10 1KVDC CER 28480 0160 3454 50 23 0160 3459 9 CAPACITOR FXD 2 20 100VDC 28480 0160 3459 50 24 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 25 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 A50C26 0160 3459 9 CAPACITOR FXD 02UF 20 100VDC CER 28480 0160 3459 50 27 0180 2620 6
230. 160 3968 1906 0231 1200 0043 2200 0107 21100083 2110 0043 8150 0005 2190 0104 2950 0132 08731 210 1250 1811 amp WW Qty fei ugqehaete ainfogsnialren Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS FAN ASSEMBLY 115V 50 60HZ EXCEPT OPTION 004 SHIELDING DISK SHOCK MOUNT 44 EFF HGT 31 00 FOR FAN IN REAR PANEL GROMMET RND 1254 40 254N GRV OD CONNECTOR 3 PIN F POST TYPE CONTACT CONN UMW POST TYPE FEM FAN ASSEMBLY 115V 50 60 H2 EXCEPT OPTION 004 SCREW TPG 8 32 375 IN LG PAN HD POZI FINGERGUARD SHIELDING DISK SHOCK MOUNT 44 EFF HGT 31 00 FOR FAN IN REAR PANEL FAN ASSEMBLY 115V 48 480 HZ OPTION 004 ONLY GROMMET RND 125 IN ID 254N GRV OD CONNECTOR 3 PIN F POST TYPE CONTACT CONN U N POST TYPE FEM CRP SHOCK MOUNT 44 EFF HGT 31 OD FAN SHIELD CAPACITOR FXD 47UF 10PF 250VAC RMS OPTION 004 ONLY DIODE CT RECT 200V 15A INSULATOR XSTR ALUMINUM SCREW MACH 4 40 375 IN LG PAN HD POZI FUSE 2 5A 250V NTD 1 25X 25 UL FOR 115V OPERATION FUSE 1 5A 250V NTD 1 25X 25 UL FOR 230V OPERATION WIRE 22AWG BK 300V PVC 7X30 105C RF INPUT EXCEPT OPTION 001 WASHER LK INTL T 7 16 IN 439 IN ID NUT HEX DBL CHAM 7 16 28 THD 094 IN THK LOCKING NUT MODULATION OUTPUT AUDIO INPUT PJO W9 NSR J2 APPEARS ON THE REAR PANEL OF OPTION 001 INSTRUMENTS ADAPTER COAX STR F N F SMA CALIBRATION OUTPUT AMIFM EXCE
231. 17843 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 20021 1853 0020 4 TRANSISTOR PNP S 300MW 150 2 28480 1853 0020 20022 1854 0022 8 TRANSISTOR NPN TO 39 PD 700MW 07263 17843 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 20023 1853 0012 4 TRANSISTOR PNP 2N2904A SI TO 39 PD 600MW 01295 2N2904A 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 20024 1852 0316 1 1 TRANSISTOR DUAL PNP PD 500MW 28480 1853 0316 20026 1854 0022 8 TRANSISTOR NPN SI 39 PD 700MW 07263 17843 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 20027 1854 0022 8 TRANSISTOR NPN SI 39 PD 700MW 07263 517843 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 20028 1854 0404 0 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0404 A20R1 2100 3274 2 2 RESISTOR TRMR 10K 10 C SIDE ADJ 1 TRN 28480 2100 3274 A20R2 0698 7275 4 2 RESISTOR 42 2K 1 05W TC 2 0 100 24546 C3 1 8 T0 4222 F A20R3 0698 7243 6 2 RESISTOR 1 96K 19 05W TC 0 100 24546 C3 1 8 T0 1961 F A20R4 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 2095 0698 7260 7 RESISTOR 10K 1 05W TC 0 100 24546 3 1 8 0 1002 2086 0698 7258 3 2 RESISTOR 8 25K 1 05W TC 0 100 24546 C3 1 8 T0 8251 F A20R7 0698 7270 9 1 RESISTOR 26 1K 1 05W TC 0 100 24546 C3 1 8 T0 2612 F A20R8 0698 7236 7 RESISTOR 1K 1 OSW TC 0 100 24546 C3 1 8 T0 1001 F 2099 0698 7212 9 RESISTOR 100 1 05W 0 100 24546
232. 179 1 72 PD 200MW TRANSISTOR NPN 2 5179 5 72 PD 200MW TRANSISTOR DUAL NPN PD 750MW TRANSISTOR NPN 18 PD 360MW E der Saje geat repa parapa or Piette t 28480 28480 28480 28480 28480 25088 28480 25088 28480 28480 28480 28480 28480 28480 28480 28480 28480 9 171 9 171 28480 9N171 02114 02114 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 00000 28480 28480 04733 04713 04713 28480 28480 E ek Mfr Pa 0160 3459 0160 0153 0160 3459 0160 2199 0160 2199 Model 8901B rt Number D2R2GS1B50K 0160 3459 D2R2GS1B50K 0160 3459 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 1901 0179 144 150 1 4150 1901 0535 1 4150 56 590 65 3 PARYLENE 56 590 65 38 PARYLENE 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 100 1635 9100 1635 9100 1635 9100 1635 9100 1637 9100 1637 9100 3913 9140 0179 08901 00129 ORDER BY DESCRIPTION 08901 001 1854 0811 2 5179 2 5179 2 5179 1854 0475 1854 0019 14 A Pierola part kange rev 1670100 Model 8901B Reference Designation 5007 5008 5009 50010 50011 50012 50013 50014 A50Q15 50016 A50Q17 50018 50019 50020 50021 50022 A50Q23 ASOR 1 ASOR2 ASOR3 ASORA 50 5 ASORE A50R7 ASORS
233. 1814 1810 0402 6 1 15 1810 0402 6 A1R16 1810 0402 6 A1R17 1810 0402 6 A1R18 1810 0402 6 A1R19 1810 0402 6 1620 1810 0402 6 21 1810 0402 6 A1R22 1810 0370 7 7 A1R23 1810 0370 7 A1R24 1810 0370 7 1 25 1810 0370 7 26 1810 0370 7 A1R27 1810 0370 7 A1R28 0698 3438 3 10 A1R29 A1R30 A1R31 A1R32 A1R33 0698 3438 3 1934 1810 0370 7 151 5060 9436 7 46 152 5060 9436 7 153 5060 9436 7 154 5060 9436 7 155 5060 9436 7 156 5060 9436 7 157 5060 9436 7 158 5050 9436 7 159 5060 9436 7 1510 5060 9436 7 1511 5060 9436 7 1512 5060 9436 7 A1S13 5050 9436 7 1514 5060 9436 7 1515 5060 9436 7 1516 5060 9436 7 1517 5060 9436 7 1518 5060 9436 7 1519 5060 9436 7 1520 5060 9436 7 4 Secon 7 update information 6 8 Table 6 3 Replaceable Parts Description RESISTOR 21 5K 1 125W TC 0 100 RESISTOR 464 1 125W TC 0 100 RESISTOR 196K 1 125W TC 0 100 RESISTOR 68 1K 1 125W TC 04 100 RESISTOR 68 1K 1 125W TC 0 100 RESISTOR 16 2K 1 125W F TC 0 100 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OMM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 DIP330 0 OHM X 8 NETWORK RES 16 01 330 0 OHM X 8 NETWORK RES
234. 19 54 0160 2878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 55 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 19 56 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0150 0571 19 57 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C58 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A19C59 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0160 0571 19 60 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A19C61 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A19C62 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC TA 56289 150D156X9020B2 A19C63 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 2314A 2619A A19C64 C 70 NOT ASSIGNED 2622A TO 2806A A 19C64 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 55 0160 4835 7 CAPACITOR FXO 1UF 1096 50VDC CER 28480 0160 4825 A19C66 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C67 0160 4835 7 CAPACTIOR FXD 1UF 10 5 CER 28480 0160 2835 19 68 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C69 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 70 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 tar Section 7 6 75 lo Sette tat ce barat thong 16 201 90 rev 6JU
235. 19C36 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 A19C37 0160 0571 0 CAPACITOR FXD 470PF 4 2096 100VDC CER 28480 0160 0571 2314A TO 2348A 19 38 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 2406A 2806 A19C38 0160 4389 6 CAPACITOR FXD 100 SPF 200VDC CER 28480 0160 4289 19 39 02600572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 19 40 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 01600572 19 41 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 19 42 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 19 43 0160 4491 1 1 CAPACITOR FXD 8 2PF 5 200VDC CER 28480 0160 4491 19 44 0160 3568 1 2 CAPACITOR FXD 2 7 5 200VDC CER 51642 100 100 0 279 19 45 0160 4084 8 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 4084 19 46 0160 3568 1 CAPACITOR FXD 2 7PF 5 200VDC CER 51642 100 109 NP0 279J 19 47 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 48 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 A19C49 0160 0690 4 CAPACITOR FXD 1 5PF 100VDC CER 28480 0160 0690 19 50 0160 3878 6 CAPACITOR FXD 1000PF 204 100VDC CER 28480 0160 3878 19 51 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0166 3678 19 52 0160 4084 8 CAPACITOR FXD 1UF 20 5 CER 28480 0160 4084 A19C53 0160 4084 8 CAPACITOR FXD 1UF 20 5 CER 28480 0160 4084
236. 1B Modulation Analyzer which shares the firmware Change 17 adds hardware identification of certain instrument configuration details needed for Option Series 030 measurements Refer also to Change 16 above Change 18 adds Special Functions 49 C to read the Option Series 030 IF RMS Detector Change 19 increases tbe averaging time in Tuned RF Level for instruments when Special Function 32 1 is in effect See also Change 12 1 2 8901 Instrument Changes 5 Software date code 70 1986 2608A to 2642A ROM part numbers ROM 1 08901 80087 ROM 2 08901 80088 ROM 3 08901 80089 Change 12 adds Special Function 32 which alters several default conditions for specialized applications Special Function 32 0 sets the normal defaults Special Function 32 1 sets the special defaults RF power resolution 0 001 dB and minimum audio frequency resolution 0 1 Hz Special Function 32 2 displays the status of this special function Change 20 updates the original firmware released for the Option 030 for more efficient operation The new firmware is compatible with all instruments Software date code 149 1986 2644A to 2702A ROM part numbers ROM 1 08901 80090 ROM 2 08901 80091 ROM 3 08901 80092 Change 21 allows for displaying the previously entered frequency when displaying RF Power Calibration Factors Change 22 prevents the instrument when in Tuned RF Level range to range calibration from generating a
237. 2 0757 0402 0598 0084 0757 9274 O t ooan C F9 gt Qty tet reformation Table 6 3 Replaceable Parts Description TRANSISTOR NPN SI PO 310MW e 100MHZ TRANSISTOR NPN SI PO 310MW 100MHZ RESISTOR 5 11K 196 125W TC m04 100 RESISTOR 2 61K 1 125W 04 100 RESISTOR 1 5 2W PW 0 800 RESISTOR 18 5 ZW PW 0 800 RESISTOR 261 1 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 13 3K 1 125W F TC 304 100 RESISTOR 1K 1 125W 04 100 RESISTOR 13 3K 1 125W TC 0 100 RESISTOR 511 1 125W F TC O 100 RESISTOR 750 1 125W TC O 100 RESISTOR 2 61K 196 125W F TC 2 04 100 RESISTOR 750 1 125W F TC 2 0 100 RESISTOR 2 61K 1 125W TC 0 100 RESISTOR 511 1 125W F TC O 100 RESISTOR 1K 1 125W F TC 0 100 RESISTOR 5 11K 1 125W F TC 0 100 RESISTOR 511 1 125W F TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 2 61K 1 125W TC 0 100 RESISTOR 2 15K 1 125W TC 04 100 RESISTOR 2 15K 1 125W TC 0 100 RESISTOR 2 15K 1 125W 0 100 RESISTOR TRMR 200 10 C SIDE ADJ 1 TRN RESISTOR 1 47K 1 125W TC 0 100 RESISTOR 10 1 125W TC 2 0 100 RESISTOR 21 5 1 125W TC O 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 100 1
238. 2 1854 0798 5 1 TRANSISTOR NPN SI DARL PD 1W 04713 MPS U45 21900004 9 WASHER LK INTL T NO 4 115 IN ID 28480 2190 0004 08901 00137 6 1 HEAT SINK PC 28480 08901 00137 2200 0141 8 SCREW MACH 4 40 312 IN LG PAN HD POZI 28480 2200 0141 A1003 1853 0281 9 TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW 04713 2N2907A 1004 1884 0273 4 3 THYRISTOR SCR 2N4101 TO 66 31585 2N4101 0340 068 1 5 4 INSULATOR XSTR THRM CNDCT GRA 28480 0340 0681 2190 0004 9 WASHER LK INTL T NO 4 115 IN 1D 28480 2190 0004 22000141 8 SCREW MACH 4 40 312 IN LG PAN HO POZI 28480 2200 0141 1005 1854 0477 7 TRANSISTOR NPN 2N2222A SI 18 500MWW 04713 2 2222 1006 1884 0273 4 THYRISTOA SCR 2N4101 TO 66 31585 2N4101 0340068 1 5 INSULATOR XSTR THRM CNDCT GRA 28480 0340 0681 2190 0004 9 WASHER LK INTL T 4 115 IN ID 28480 2190 0004 2200 0141 8 SCREW MACH 4 50 312 IN LG PAN HD POZI 28480 22000141 A10Q7 1884 0273 4 THYRISTOR SCR 2 4101 66 31 585 2N4101 03400681 5 INSULATOR XSTR THRM CNDCT GRA 28480 0340 0681 2190 0004 9 WASHER LK INTL T NO 4 115 IN ID 28480 2190 0004 2200 0141 8 SCREV MACH 4 40 312 IN LG PAN HD POZI 28480 2200 0141 1008 1884 0073 2 1 THYRISTOR SCR TO 5 VRRM 100 28480 1884 0073 1200 0173 5 INSULATOR XSTR DAP GL 28480 12000173 1009 1854 0474 4 3 TRANSISTOR NPN 310MW 100MHZ 04713 2N5551 10010 1858 0008 8 2 TRANSISTOR ARRAY 14 PIN PLSTC DIP 04713 MHOS001 A10Q11 1858 0008 8 TRANSISTOR ARRAY 14 PIN PLSTC DIP 04713 MHQ600 1 1
239. 2 TO 4 LINE DUAL 2 INP IC 78L12A V RGLTR TO 92 cedectel cengqsotent Peter to Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 01295 04713 28480 28480 28480 24840 24840 24840 28480 28480 01295 04713 _ _ _ 1 a Replaceable Parts Mfr Part Number 12510600 1251 0600 1251 0600 1251 0600 1251 0600 12510600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1818 1968 1200 0565 SN74LS04N LM339J 08901 80064 08901 80068 08901 80073 08901 80083 08901 80089 08901 80092 08901 80107 1200 0553 5 7445139 MC78L12ACP L patto chatte 6 51 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference inti Mfr Designation Number D Qty Description Cod Mfr Part Number A13 08901 60244 SERIAL PREFIX 2314A TO 2718 2314A TO 2333A A13U7 08901 80063 5 1 ROM 2 28480 08901 60063 2334A TO 2428A A13U7 08901 80067 8 1 ROM 2 28480 08901 80067 2432A TO 2550A 1307 08901 80072 6 1 ROM 2 28480 08901 80072 2551A ONLY 1307 08901 80082 8 1 ROM 2 28480 08901 80082 2608A TO 2642 AI3U7 08901 80088 4 1 ROM 2 28480 08901 80088 2644A TO 2702A 1307 08901 80091 9 1 ROM 2 28480 08901 80031 2718 A13U7 08901 80106 7 1 ROM 2 28480 08901 80106 1200 0553 5
240. 2 VioA _ 10 Service Sheet 8D 27 a _ Service Model 8901B For near identical modulators the formula can be written in the form 100 CEN where is a small error term which need not be determined with great accuracy Note that if Modulators A and are identical approaches zero and the formula reduces to 100 3 or 33 33 A measurement of residual AM is also made on the unmodulated RF and entered into the calculation of the AM calibration factor The AM signal is then measured and the calibration factor is calculated and shown on the display To prevent ringing of the demodulated signal in the audio circuits the modulation squarewave is given a slow risetime by the Current Sources Special Function 13 controls the AM Calibrator and permits its use with another Modulation Analyzer or Measuring Receiver 80 28 Service Sheet Model 8901B Service TROUBLESHOOTING General Procedures for checking the IF Section of the instrument are given below The blocks or points to check are marked on the block diagram by a hexagon with a check mark and a number inside for example Before performing any check perform all the checks on Service Sheet BD1 CAUTION Tighten SMC connectors to 0 6 m 5 in lb Hand tightening of connec tors is insufficient Hand tightened connectors can work loose and cause reduced performance or malfunctions Equipment Aut
241. 20 0 CONNECTOR RF SMC M PC 50 28480 1250 1220 2190 0324 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THO 067 IN THK 28480 2950 0078 tRefer Section 7 for npidate infortniatiotn Factory Zeiected Coisponent Refer to section A pari change rev 16JUL90 6 11 Replaceable Parts Reference HP Part Qty Designation Number D A2L1 9140 0137 1 4 A2L2 8140 0137 1 A2L3 9140 0293 0 2 A2L4 9140 0293 0 215 9100 1653 4 3 A2L6 9140 0291 8 1 217 9100 1645 4 1 218 3140 0292 9 1 A2L9 9140 0280 5 1 2110 9100 1660 3 1 A2L11 9140 0281 6 1 2112 9100 1654 5 1 2 13 9100 1651 2 1 A2L14 9100 1648 7 1 A2MP1 08901 00022 8 1 2360 0113 2 31 A2MP2 08901 00014 8 1 A2MP3 08901 00015 9 1 A2MP4 08901 00050 2 1 2 5 08901 00051 3 1 A2MP6 08901 00052 4 1 A2MP7 08901 00053 5 1 201 1854 0475 5 4 202 1854 0071 7 32 A203 1853 0007 7 21 A204 1854 0477 7 14 A205 1854 0071 7 206 1853 0012 4 3 A2Q7 1854 0013 7 1 2314A TO 2422A A2R1 0757 0442 9 74 A2R2 0757 0442 9 2426A AND ABOVE A2RI 0757 0290 5 A2R2 0757 0290 5 A2R3 0699 0140 0 2 A2R4 0699 0139 7 2 295 0698 8556 6 2 296 2100 3052 4 1 297 0699 0140 0 A2R8 0699 0144 4 2 A2R9 0699 0145 5 4 A2R10 0698 3451 0 3 A2R11 0698 7219 6 2 A2R12 0698 7244 7 4 tH efer Section 7 for update information 6 12 Table 6 3 Replaceable Parts Description INDUCTOR RF CH MLD 1MH 5 20X 45L G Om 60 INDUCTOR RF CH MLD
242. 20 1729 A1U31 1820 1729 1032 1820 1729 1033 1820 1729 1034 1820 1729 1035 1820 1729 1036 1820 1216 1037 1820 1216 1038 1820 1216 1039 1820 1729 1040 1820 1729 1041 1820 2075 1 1 8150 0447 0362 0227 A1W2 8159 0005 A1W3 8159 0005 A1WA4 8159 0005 5 8159 0005 oo OQ OW WO OO Q w Qty 10 15 for npilate information Table 6 3 Replaceable Parts Description DISPLAY NUM SEG 1 43 H SOCKET IC 14 CONT DIP DIP SLDR DISPLAY NUM SEG 1 CHAR 43 H 14 CONT DIP DIP SLDR IC COMPARATOR DUAL 8 DIP P PKG IC GATE TTL LS NOR QUAD 24 iC TRANSCEIVER TTL LS BUS IC TTL LS COM CLEAR 8 BIT iC TRANSCEIVER TTL LS BUS OCTL IC TRANSCEIVER TTL LS BUS OCTL OCDR TTL LS 2 TO 4 LINE DUAL 2 NP IC GATE TTL LS NAND QUAD 2 INP IC GATE TTL LS NAND QUAD 2 INP IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT tC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC DCDR TTL LS 3 TO 8 LINE 3 INP TTL LS 3 TOS LINE 3 INP IC DCDR TTL LS 3 TO 8 LINE 3 INP IC L
243. 200MA 4NS DIODE SM SIG SCHOTTKY DIODE SM SIG SCHOTTKY NOT ASSIGNED NOT ASSIGNED DIODE SM SIG SCHOTTKY DIODE SM SIG SCHOTTKY DET DIODES MATCH DET DIODES MATCH DIODE SM SIG SCHOTTKY DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1 150 50V 200MA 4NS betas celected empornergnt C Robot te Mfr Code 56289 56289 28480 28480 28480 28480 28480 56289 56289 28480 28480 28480 28480 28480 28480 28480 56289 56289 28480 28480 56289 28480 28480 28480 56289 28480 9 171 9 171 94173 94171 28480 28480 28480 28480 28480 28480 28480 9N171 9 171 Model 8901B Mfr Part Number 1500156 9020 2 150D156X9020B2 0160 4835 0180 2929 0160 4822 0160 0340 0160 4678 150D397X9006R2 DJB 150D156X902082 0160 4833 0160 4535 0160 4835 0160 4833 0160 4825 0160 4825 0160 4810 1500225 9020 2 1500156 9020 2 0160 4812 0160 4801 1500474 9035 2 0160 4822 0160 5714 0160 4789 1500156 902082 0160 4509 1 4150 1 4150 1 4150 144150 1301 0539 1901 0539 1901 0518 1901 0518 08901 80024 08901 80024 1901 0518 1N4150 1N4150 A Errata part change rcv 16JUL90 Model 8901B Reference Designation A6CR20 A6CR21 631 A6J2 A6J3 A6J4 AGLI 62 A6L3 A6L4 A6L5 A6L6 A6L7 A6LB A6L9 A6L10 A6MP1 601 A6Q A6Q3 604 605 2314 2428A AGQE 2432A AND ABOVE A6Q6 A6Q7 A6Q8 A6Q9
244. 22 0757 0416 0698 3438 0698 3438 0698 3438 0757 0726 0698 3441 0698 3441 0698 3441 0757 0416 0757 0416 0757 0397 0757 0394 0757 0394 0698 7236 0757 0280 0698 7236 0698 7247 0698 3151 0698 7247 0698 7208 0698 7229 0757 0397 0757 0416 0698 7229 0698 3439 0757 0397 0757 9337 0698 3439 0698 3132 0757 0442 0757 0442 0698 7209 0757 0397 0698 7209 0698 7229 0698 7236 0698 3132 0698 7205 0698 3132 0698 3132 0698 3132 0698 3132 17 bh AOO how G non 6 t9 C5 bh amp Of D RESISTOR 909 1 125W F TC 0 100 NOT ASSIGNED RESISTOR 909 1 125W F TC 0 100 RESISTOR 511 1 125W TC O 100 RESISTOR 147 1 125W F TC 0 100 RESISTOR 147 1 125W F TC 100 RESISTOR 147 1 125W TC 04 400 RESISTOR 511 1 25W TC 0 100 RESISTOR 215 1 125W TC 0 100 RESISTOR 215 1 125W TC 0 100 RESISTOR 215 1 125W 0 100 RESISTOR 511 1 125W F TC 0 100 RESISTOR 511 1 125W F TC O 100 RESISTOR 68 1 1 125W 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 1K 1 05W TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR K 1 05W TC 20 100 RESISTOR 2 87K 1 05W 0 100 RESISTOR 2 87K 1 125W TC 0 100 RESISTOR 2 87K 1 05W TC 04 100 RESISTOR 68 1 1
245. 23 4 Grounding testpoint D initiates the Keyboard signature analysis troubleshooting routine The signature analyzer s start and stop leads are then connected to testpoint A and the probe is connected to testpoint B See Service Sheet 25 Whenever a testpoint is grounded the associated annunciator is extinguished 8B 18 Controller Test LEDs and Test Points Model 8901B Service 8 11 SIGNATURE ANALYSIS Signature analysis is a simple method of verifying the operation of digital circuitry When properly used signature analysis can detect extremely subtle hardware faults Signatures must identically match those given in the signature tables If everything is working correctly signatures will all match exactly If they don t match by even one digit something is wrong The Counter Controller and Keyboard and Display Assemblies are designed for troubleshooting with signature analysis Signature Analysis is a method of digital signal tracing using test routines programmed in the Modulation Analyzer s ROM With the Modulation Analyzer s Controller executing the signature analysis routine the signature analyzer s test probe is used to check nodes in the circuit under test The signature analyzer converts the signals at the node into a four digit signature which it displays This signature is then compared to the signature in the troubleshooting checks adjacent to the appropriate schematic These two signatures must be identica
246. 24 Replaceable Parts Mfr Part Number MF4C1 8 T0 1332 F 208A103 4 1 8 0 2611 0757 0123 C3 1 8 T0 3161 F C3 1 8 T0 1002 F 4 1 8 0 3481 3 1 8 0 4642 0689 3159 0757 0123 C3 1 8 T0 1102 F C3 1 8 T0 8251 F C3 1 8 T0 1001 F 4 1 8 4642 C4 1 8 T0 2152 F C3 1 8 TO 1001 F 3 1 8 0 9091 C3 1 8 T0 1001 F 3 1 8 70 1001 C4 1 8 T0 178R F 3 1 8 0 1001 4 118 0 4640 4 1 8 0 4221 C3 1 8 T0 1001 F C3 1 8 TO 1001 F C3 1 8 TO 1213 F 0699 0069 3 1 8 70 3161 1251 0600 1251 0600 1251 0600 1251 0600 LM307J DG508BK SN74LS03N MC 1458U NE5532AFE part change 6 99 ST ns 2 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C D Mfr escription Mfr Part Number Designation Number 0 y j Code A20U6 1820 1199 1 2 IC INV TTL LS HEX 1JNP 01295 SN74LSO4N A20U7 1820 1195 7 3 FF TTL LS D TYPE POS EDGE TRIG COM 01295 SN74LS175N A20U8 1820 1199 1 IC INV TTL LS HEX 14NP 01295 SN74LSOAN A20U9 1820 1216 3 2 IC DCDR TTL LS 3 TO 8 LINE 3 INP 01295 SN74LS138N A20U10 1826 0188 8 2 IC CONV 8 B D A 16 DIP C PKG 04713 MC1408L 8 A20U11 1820 1216 3 IC DCOR TTL LS 3 TO 8 LINE 3 INP 01295 SN74LS138N A20U12 1826 0188 8 IC CONV 8 B D A 16 DIP C PKG 04713 MC1408L 8 A20U13 1820 1195 r4 IC FF TTL LS D TYPE POS EDGE TRIG COM 01295 5 7415175 20014 1826 0606 5 2 SWITCH ANLG QUAD 16 DIP C PK
247. 24546 4 1 8 0 1001 3019 AND ABOVE A14R5 0698 0084 9 RESISTOR 2 15K 146 125W F TC 04 100 28480 0698 0084 Section 7 fot update inlorinatian Factory selected Component Reter to Section 5j part change 6 57 Replaceable Parts Reference HP Part Qty Designation Number D A14R6 0757 0416 7 14 7 18100136 3 1 A14R8 0698 0083 8 A14R9 0698 7224 3 2314A TO 25144A Al4R10 2515A AND ABOVE AI4RIO 0757 0442 9 A14S1 3101 1973 7 1 1200 0485 2 1 14 1 1251 0600 0 A14TP2 1251 0600 0 14 1251 0600 0 14 4 1251 0600 0 14 5 1251 0600 0 AQT4TP6 1251 0600 0 A14TP7 1251 0600 0 A14TP8 1251 0600 0 14 9 1251 0600 0 A14U1 1820 1689 4 2 A14U2 1820 1198 0 1403 1820 1112 8 1404 1820 1416 5 1405 1820 1689 4 1406 1820 1198 0 A14U7 1820 1905 7 1 2314A TO 2514A AI4US 1820 0706 4 1 2515A AND ABOVE 1408 1820 2740 0 1409 1820 1198 0 A14U10 1820 1198 0 Ai4U11 1820 1216 3 A14U12 1820 0621 2 1 A14U13 1820 2100 6 1 1200 0654 7 1 14014 14 15 1820 1112 8 141 16 1820 1112 8 A14U17 08901 80004 4 1 A14U18 A14U19 1820 0054 5 1 A14U20 1820 1199 1 A14U21 1820 1200 5 3 A14U22 1820 1200 5 A14VR1 1902 3182 0 1 tRefer to section 7 for update information 6 59 Table 6 3 Replaceable Parts Description RESISTOR 511 1 125W F TC 0 100 NETWORK RES 10 SIP MULTI VALUE RESISTOR 1 96K 1 125W TC 0 100 R
248. 25W 0 100 RESISTOR 10 1 125W 04 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 68 1 1 125W 0 100 RESISTOR 511 196 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 251 1 125W TC 0 100 RESISTOR 10K 1 125W TC 0 100 RESISTOR 909 1 125W TC 0 100 RESISTOR 23 7K 1 125W TC m0 100 RESISTOR 75 1 125W TC 100 RESISTOR 511 1 125W TC 0 100 NOT ASSIGNED RESISTOR 100K 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 0 100 RESISTOR 68 1 1 125W TC 04 100 RESISTOR 422 1 125W TC 0 4 100 RESISTOR 68 1 1 125W 0 100 RESISTOR 1 95 1 125W TC 0 4 100 EE et cede taal Ud te DENTES 01121 24546 01121 01121 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 30983 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24846 24546 24546 24546 24546 208A47 1 4 1 8 2610 208 471 208 471 C4 1 8 TO 51R1 F C3 1 8 T0 1002 F C3 1
249. 25W 0 100 RESISTOR 106 1 125W TC 0 100 RESISTOR 162 1 125W TC 0 100 RESISTOR 1M 1 125W F 40 100 NOT ASSIGNED teed section Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 04713 04713 28480 28480 04713 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 Model 8901 Mfr Part Number 1901 0880 1901 0880 1250 1425 21900124 2950 0078 1250 1425 2190 0124 2950 0078 9100 3922 9100 3922 9100 3922 9100 3922 9100 3922 9100 2251 08901 00068 9100 2251 08901 00023 5001 0176 5001 0176 08662 00040 08662 00038 08901 00043 1854 0247 0340 0834 1855 0020 1855 0020 2N3251 243251 1854 0404 1854 0404 243251 C3 1 8 T0 1001 F C4 1 8 T0 1001 F C4 1 8 T0 2872 F 4 1 8 0 2152 C4 1 8 T0 511R F CA 1 8 TO 1211 F 4 1 8 0 1962 4 1 8 0 111 4 1 8 0 1002 4 1 8 0 4641 4 1 8 0 2871 4 118 0 101 4 1 8 0 101 C4 1 8 T0 162R F 0698 8827 ob rtate porto rev 164 121 90 Model 8901B Reference Designation A24P17 24 18 A24R19 A24R20 A24R21 A24R22 A24R23 A24R24 A24R25 A24R26 A24R27 A24TP1 A24TP2 A24TP3 2401 2402 2
250. 272 2200 0119 0 3 SCREW MACH 4 40 1 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2636A AND ABOVE M P46 0890200025 2 1 OSCILLATOR MOUNTING PLATE 28480 08302 00025 0360 0272 2 1 TERMINAL SLDR LUG LK MTG FOR4 SCR 28480 03600272 2200 0119 0 3 SCREW MACH 4 40 1 IN LG 21 00000 ORDER BY DESCRIPTION Hefer ad 7 Rivet Gry selected Cornspotntent Rejer po part change for rev 16JUL90 6 171 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part inti Mfr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS MP47 08901 20165 2 1 DISPLAY BD SHIELD 28480 08901 20165 2190 0003 8 WASHER LK NO 4 115 IN ID 28480 21900003 22000149 6 SCREW MACH 4 40 6254N LG PAN HO POZ 00000 ORDER BY DESCRIPTION 3050 0105 6 WASHER FL MTLC NO 4 125 IN ID 28480 3050 0105 MP48 08901 00102 5 1 DISPLAY BOARD INSULATOR 28480 08901 00102 0380 0003 9 4 SPACER RNO 125 IN LG 18 IN ID 00000 ORDER BY DESCRIPTION 2200 0149 6 SCREW MACH 4 40 6254N LG PAN HD POZI 00000 OROER 8Y DESCRIPTION MP49 6960 0002 4 6 PLUG HOLE DOME HD FOR 5 D HOLE STL 28480 6960 0002 MPSO 6960 0009 1 7 PLUG HOLE FL HD FOR 438 D HOLE BRS 28480 6960 0009 MP51 6960 0013 7 1 PLUG HOLE DOME HD FOR 812 D HOLE STL 28480 6960 0013 2314A TO 2608A MP52 08901 00090 0 1 DUCT SUPPORT 28480 08901 00090 2190 0018 5 2 WASHER LK NO 6 141 IN ID 2
251. 28480 24546 24546 24546 24546 24546 03888 24546 24546 24546 24546 24546 73138 24546 24546 73138 ig l o 1 AE Model 8901B Mfr Part Number 0160 3879 0160 3879 0160 3324 1500225 9020 2 150D225X9020A2 0160 3879 150D156X9020B2 0160 3879 1901 0895 1901 0895 1 4150 1 4150 1 4150 0490 1063 0490 1063 08901 00075 2190 0008 ORDER BY DESCRIPTION 1854 0810 2N2219A 1200 0173 234393 18530459 18540810 18530459 1853 0459 1853 0459 1854 0810 1854 0810 1854 0810 1853 0459 1853 0459 1853 0459 0699 0075 C4 1 8 T0 4222 F C4 1 8 T0 2612 F 4 1 8 0 4222 4 1 8 0 1472 4 1 8 0 5622 PMES5 1 8 TO 23R7 F 4 1 8 0 1001 4 1 8 0 1212 4 1 8 0 1002 4 1 8 0 8252 4 1 8 70 1080 82PR100K CA4 1 8 TO 3162 F C4 1 8 T0 1333 F B2PR1OOK paot lange rev 16 14 90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C at D Mfr escription Mfr Part Number Designation Number D y p Code AS3RI7 0698 0083 8 RESISTOR 1 96K 1 325W F TC 0 100 24546 4 1 8 1961 A53R18 0698 0084 9 RESISTOR 2 15K 1 125W TC 20 100 24546 4 1 8 0 2151 53 19 0811 3351 1 1 RESISTOR 11K 025 05W PWW TC 0 10 28480 0811 3351 A53R20 0811 3348 6 2 RESISTOR 111 11 025 05W PWW 0 10 28480 0811 3348 A53R21 0698 3450 9 RESISTOR 42 2K 1 125W TC 04 100 24546 4 1 8
252. 28480 0160 4535 A17C25 0160 4801 7 1 CAPACITOR FXD 100PF 5 100VDC CER 28480 0160 4801 17 26 0160 0576 5 CAPACITOR FXD 1UF 20 5 CER 28480 0160 0576 17 27 08901 00064 8 1 STRAP CAPACITOR 28480 08901 00064 17 28 0160 4512 7 2 CAPACITOR FXD 120PF 5 200VDC CER 28480 0160 4512 17 29 0160 4535 4 CAPACITOR FXD 10 10 SOVDC CER 28480 0160 4535 17 30 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 37 1 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A17C32 0160 4822 2 1 CAPACITOR FXD 1000PF 5 100VDC CER 28480 0160 4822 A17C33 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A17C34 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A17C35 0160 4512 7 CAPACITOR FXD 120PF 5 200VDC CER 28480 0160 4512 A17C36 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 A17CR1 1901 0179 7 DIODE SWITCHING 15V 50MA 750PS DO 7 28480 1901 0179 A17CR22 1901 0179 7 DIODE SWITCHING 15V 50MA 750PS DO 7 28480 1901 0179 A17CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200 4NS 9 171 1 4150 A17CR4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A17CR5 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1 4150 A17CR6 1901 0518 8 2 DIODE SM SIG SCHOTTKY 28480 1901 0518 A17CR7 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 section 7 for update intoiiatien Factory selected Component i eter ta See tice 13 DS part
253. 3 ANTRAL 7845 A17P46 A17P47 A17R48 17849 A17R50 A17T1 1701 6 74 Sealen bcr HP Part Number C D Qty Table 6 3 Replaceable Parts Description Mfr Code 08902 60104 SERIAL PREFIX 2642A AND ABOVE 0698 0087 0698 0085 0699 0135 0699 0135 0698 7204 0698 7220 0598 7204 0757 0421 0698 3154 0757 0422 0699 0392 0757 0439 0757 0441 0698 7204 0757 0799 0698 0055 0598 7205 0698 7205 0595 7223 0585 5154 0757 0274 0698 7205 0757 0278 0757 0294 0698 3441 0698 3431 0757 0418 0698 3443 0698 3443 0698 3154 0757 0294 0757 0394 0757 0180 0757 0394 0757 0418 0698 3443 0757 0401 0757 0401 0757 0418 0698 4037 0698 8821 0698 4037 0698 3438 07570422 0698 3154 08901 80031 08901 67001 0340 1098 1251 1556 do 0 tn 0 5 o o O Q 0 CO A 4 nigo RESISTOR 316 1 25W F TC 0 100 RESISTOR 2 61K 1 125W TC 04 100 RESISTOR 71 2 1 25W TC 04 100 RESISTOR 71 2 1 25W TC 04 100 RESISTOR 46 4 1 OSW TC 04 100 RESISTOR 215 1 05W TC 0 100 RESISTOR 46 4 1 05W TC 0 100 RESISTOR 825 1 1254 TC 0 100 RESISTOR 4 22K 1 125W F TC 0 100 RESISTOR 909 1 125W TC 0 100 RESISTOR 34 8 1 125W TC 0 100 RESISTOR 6 81K 1 125W TC 04 100 RESISTOR 8 25 1 125W
254. 3 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 OLMP 1613 A1DSS 1990 1273 1 LED LAMP RED LUM INT 8 6MCD BVR 5V 01542 QLMP 1613 10 10 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 10 11 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 A1DS12 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 10513 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 10 14 1990 1273 1 LED LAMP RED LUM INT 8 6MCD BVR 5V 01542 QLMP 1613 A1DS15 1990 1273 L LED LAMP RED LUMJNT 8 6MCD BVR 5V 01542 OLMP 1613 A1DS16 1990 1273 1 LEDLAMP RED LUM INT 8 6 BVR 5V 01542 1613 A1DS17 1990 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 A1DS18 1990 1273 1 LEO LAMP RED LUM INT 8 6MCD BVR 5V 01542 QLMP 1613 A1DS19 1990 0759 6 LED LIGHT BAR MODULE LUM INT gt 3MCD 28480 HLMP 2620 1200 0423 8 SOCKET IC 16 CONT DIP DIP SLOR 28480 1200 0423 A10S20 NOT ASSIGNED A1DS21 1990 0759 6 LED LIGHT BAR MODULE LUM INT SMCD 28480 HLMP 2620 1200 0423 8 SOCKET IC 16 DIP DIP SLDR 28480 12000423 10522 1990 1273 1 LED LAMP RED LUM INT 8 6MCD BVR 5V 01542 QLMP 1613 10523 1890 1273 1 LED LAMP RED LUM INT 8 6 BVR 5V 01542 QLMP 1613 1B efer Section 7 for update information Factory selected Component Refer to secon 5 A Frata pare chauge rev 16JUL90 6 6 6 Replaceable Parts Reference HP Part Qty Designatio
255. 30MA MAX 28480 5082 4984 10053 1990 0485 5 LED LAMP LUM INT gt 800UCD IF 28480 5082 4984 10054 1990 0485 5 LED LAMP LUM INT 800UCD IF 30MA MAX 28480 5082 4984 10055 1990 0485 5 LED LAMP LUM INT 800UCD IF 30MA MAX 28480 5082 4984 A10F1 2110 0083 6 3 FUSE 2 5A 250V NTD 1 25X 25 UL 28480 2110 0083 2110 0643 4 4 FUSEHOLDERCLIP TYPE 15A 250 V 28480 2110 0643 A10F2 2110 0036 9 1 FUSE 8A 125V NTD 1 25X 25 UL 75915 312008 2110 0643 4 FUSEHOLDER CLIP TYPE 15A 250 V 28480 2110 0643 A10F3 2110 0083 6 FUSE 2 5A 250V NTO 1 25X 25 UL 28480 2110 0083 2110 0643 4 FUSEHOLDER CLIP TYPE 15A 250 V 28480 2110 0643 10 4 2110 0083 6 FUSE 2 5 250 1 25 25 UL 28480 2110 0083 2110 0643 4 FUSEHOLDER CLIP TYPE 15A 250 V 28480 2110 0643 A10J1 1251 5635 1 1 CONNECTOR 12 POST TYPE 28480 1251 5635 A10MP1 5001 0178 2 2 BRACKET ANGLE 28480 001 0178 2190 0007 2 3 WASHER LK INTL T NO 6 141 IN ID 28480 2190 0007 2360 0191 6 3 SCREW MACH 6 32 188 IN LG PAN HD POZ 00000 ORDER BY DESCRIPTION A10MP2 5001 0178 2 BRACKET ANGLE 28480 5001 0178 2190 0007 2 WASHER LK INTL T NO 6 141 IN ID 28480 2190 0007 2360 0191 6 SCREW MACH 6 32 188 IN LG PAN HO POZI 00000 ORDER BY DESCRIPTION A10Q1 1884 0005 0 1 THYRISTOR SCR VARM 50 04713 MCR649P 2 0340 0875 9 1 INSULATOR XSTR THRM CNDCT 28480 0340 0875 2190 0004 9 11 WASHER LK INTL T NO 4 115 IN ID 28480 2190 0004 2200 0141 8 14 SCREW MACH 4 40 312 IN LG PAN HO POZI 28480 2200 0141 100
256. 310 5041 0386 5041 2753 5041 2750 5041 2751 5041 2752 1810 0279 1810 0207 0757 0199 07570123 0757 0461 amp O0 Mo AN OW 0 SIN N 0 amp NNN OO h lt alora dion Table 6 3 Replaceable Parts Description KEY CAP QUARTER GY IT KEY CAP HALF LOCAL KEY CAP QUARTER GY LIT KEY CAP HALF GRAY LIT KEY CAP HALF YELLOW LED KAY CAP QUARTER KEY CAP QUARTER GY LIT KEY CAP QUARTER GY LIT KEY CAP HALF GRAY LIT KEY CAP FULL BK LIT KEY CAP HALF GR KEY CAP LT PIPE KEY CAP LT PIPE KEY CAP LT P BLUE KEY CAP QUARTER GY LIT KEY CAP QUARTER GY LIT KEY CAP HALF GRAY LIT KEY CAP FULL BK LIT KEY CAP FULL 7 LT GY KEY CAP FULL 4 LT GY KEY CAP FULL 1 LT GY KEY CAP FULL 0 LT GY KEY QUARTER GY LIT KEY CAP QUARTER GY LIT KEY CAP HALF GRAY LIT KEY CAP FULL BK LIT KEY CAP FULL 8 LT GY KEY CAP FULL 5 LT GY KEY CAP FULL 2 LT GY KEY CAP FULL GY DOT KEY CAP QUARTER GY LIT KEY CAP QUARTER GY LIT KEY CAP HALF GRAY LIT KEY CAP FULL BK LIT KEY CAP FULL 9 LT GY KEY CAP FULL 6 LT GY KEY CAP FULL 3 LT GY KEY CAP FULL CLEAR KEY CAP QUARTER GY LIT KEY CAP QUARTER GY LIT KEY CAP HALF GY KEY CAP FULL BK LIT KEY CAP FULL MHZ KEY CAP FULL KH2 UP KEY CAP FULL KHZ DN KEY CAP FULL SPCL NETWORK RES 10 SIP4 7K OHM X 9 NETWORK RES 8 SIP22 0K OHM X 7 RESISTOR 21 5K 1 125W TC 0
257. 314 2332 417 28 ASSIGNED 2333A 2636 17 28 0160 5491 3 CAPACITOR FXD 240 5 100VDC CER 28480 0160 5491 A17CR 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA ANS 9 171 1 4150 A17CR2 1901 1098 1 DIODE SWITCHING 1N4150 50 200MA 4NS 9 171 1 4150 A17CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 Ai7CR4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 17 5 1901 1098 1 DIODE SWITCHING 1044150 50V 200MA 4NS 9N171 1N4150 A17CR6 1901 0518 8 DIODE SM SIG SCHOTTKY 9N171 1N41500 A17DS1 1990 0524 3 1 LED LAMP LUM INT 1MCD IF 20MA MAX BVR 5V 28480 5082 4550 A1741 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 19 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THO 067 IN THK 28480 2950 0078 A17J2 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 section 7 fot update ractory veteres Cersponent Refer to tection 7 A Firara par change rev 16JUL90 6 69 Replaceable Parts Reference HP Part C Qty Designation Number D A17J3 1250 1220 0 2190 0124 4 2950 0078 9 1711 9100 3922 4 21 1712 9100 3922 4 1713 9100 3922 4 1714 9100 3922 4 A17L5 9100 1641 0 1 A17L6 9100 1621 6 1 A17L7 8140 0131 5 2314A TO 2348A A17L8 08901 80002 2 1
258. 3485 2 PRESCR ECL 04713 MC12090L A19U8 1820 3485 2 IC PRESCR ECL 04713 MC12090L A19US 1820 0796 2 1 IC GATE ECL NOR QUAD 2 INP 04713 MC1662L A19U10 1826 0372 2 MISC 8 DIP P PKG 28480 1826 0372 A19U11 1826 0372 2 IC MISC 8 DIP P PKG 28480 1826 0372 A19U12 1820 0817 8 IC FF ECL D M S DUAL 04713 MC10131P A19U13 1820 1400 7 2 IC GATE ECL AND QUAD 2 INP 04713 MC10104P A19U14 1820 1400 7 iC GATE ECL AND QUAD 2 INP 04713 MC10104P A19U15 1820 0828 1 2 IC DCDR ECL BIN 3 TO 8 LINE 34NP 04713 MC10162P A19U16 1820 0802 1 2 IC GATE ECL NOR QUAD 2 INP 04713 MC10102P A19U17 1820 0817 8 IC FF ECL D M S DUAL 04713 MC10131P A19U18 1820 0828 1 ECL BIN 3 TO 8 LINE 3 INP 04713 MC10162P A19U19 1820 0802 1 IC GATE ECL NOR QUAD 2 INP 04713 MC10102P A19U20 1820 1052 5 1 XLTR ECL ECL TO TTL QUAD 2 INP 04713 MC10125L A19VR1 1902 0943 5 DIODE ZNR 2 4 5 DO 35 PD 4W 037 28480 19020943 A1SVR2 1902 0049 2 3 DIODE ZNR 6 19V 5 DO 35 PD 4W 28480 1902 0049 A19VR3 1902 0049 2 DIODE ZNR 6 19 5 00 35 PD 4W 28480 1902 0049 A19VRA 1902 0049 2 DIODE ZNR 6 19V 5 DO 35 PD 4W 28480 1902 0049 A19W1 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 A19W2 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 A19W3 NOT ASSIGNED A19WA 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 Change rev 16 JUL9O0 te Tes dien rev 16JUL9O petate dgpierinadtren elec
259. 35 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 16 5 0160 4825 7 CAPACITOR FXD 1UF 10 CER 28480 0160 4835 A16C6 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 A16C7 0160 4801 7 CAPACITOR FXD 100PF 4 596 100VDC CER 28480 0160 4801 A16C8 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 A16C9 0160 4535 4 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4535 A16C10 0180 0094 4 1 CAPACITOR FXD 100UF 75 10 25VDC AL 56289 30D107G025DD2 16 1 9170 0847 3 2 CORE SHIELDING BEAD 02114 56 590 65 3B 16 2 9170 0847 3 CORE SHIELDING BEAD 02114 56 590 65 38 A16J1 1250 1425 7 7 CONNECTOR RF SMC SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 7 WASHER LK INTL NO 10 195 IN ID 28480 2190 0124 2950 0078 9 7 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A16J2 1250 1425 7 CONNECTOR RF SMC M SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A16J3 1250 1425 7 CONNECTOR RF SMC SGL HOLE RR 50 OHM 28480 1250 1425 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 1611 9140 0137 1 4 INDUCTOR RF CH MLD 1MH 5 20 451 60 28480 91400137 16 1 08901 00149 0 1 BOARD COVER BUFFEFVAMP 28480 08901 00149 A16Q1 1854 0637 1 2 TRANSISTOR NPN 2N2219A SI TO 5 PD 800MW 01295 2N2219A A16Q2 1853 0281 9 2 TRANSISTOR P
260. 39 3 A6CR11 A6CR12 13 1901 0518 8 14 1901 0518 8 6 15 08901 80024 8 2 6 16 08901 80024 8 A6CR17 1901 0518 8 A6CR18 1901 1098 1 6 19 1901 1098 1 Section 6 34 Todor n qelate Table 6 3 Replaceable Parts Description CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 15UF 10 20VDC CAPACITORFXD 1UF 10 SOVDC CER CAPACITOR FXD 68UF 10 10VDC NOT ASSIGNED NOT ASSIGNED CAPACITOR FXD 1000PF 5 100VDC CER CAPACITOR FXD 600PF 1 300VDC MICA CAPACITOR FXD 56 1 100VDC MICA CAPACITOR FXD 390UF 10 6VDC CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 022UF 10 100VDC CER CAPACITOR FXD 1UF 4 1096 50VDC CER CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 022UF 10 100VDC CER CAPACITOR FXD 560PF 4 596 100VDC CER CAPACITOR FXD 560PF 5 100VDC CER CAPACITOR FXD 330PF 4 596 100VDC CER CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR FXD 15UF 109b 20VDC CAPACITOR FXD 220PF 5 100VDC CER CAPACITOR FXD 100 4 596 100VDC CER CAPACITOR FXO 47UF 10 35VDC TA CAPACITOR FXD 1000PF 5 100VDC CER CAPACITOR FXD 68UF 10 100VDC CER CAPACITOR FXD 15PF 5 100VDC CER 0 30 CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 033UF 5 50VDC NOT ASSIGNED DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 SOV
261. 3L585 CA3146E A13Q3 1853 0459 3 8 TRANSISTOR PNP SI PD 625MW 200MHZ 28480 1853 0459 tRefer te Section 7 for inforreation Deleted Component il efer to section 5 Erala pars change rev 16JUL90 6 53 SSS 7 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part Qty inti Mfr Designation Number D Description Mfr Part Number Code A13 08901 60196 SERIAL PREFIX 2804A AND ABOVE A13R1 07570280 3 RESISTOR 1K 1 125W 0 100 24546 4 1 8 0 1001 A13R2 07570280 3 RESISTOR 1K 1 125W 100 24546 C4 1 8 T0 1001 F A13R3 NOT ASSIGNED 13 4 ASSIGNED A13R5 NOT ASSIGNED 13 6 0698 3156 2 RESISTOR 14 7K 1 125W TC 0 100 24546 C4 1 8 10 1472 F A13R7 0757 0279 0 RESISTOR 3 1 1 125W 0 100 24546 4 1 8 0 3161 A13R8 0757 0401 0 RESISTOR 100 1 125W F 0 100 24546 4 118 70 101 9 0757 0442 9 RESISTOR 10K 1 125W F TC 04 100 24546 4 1 8 0 1002 A13R10 0757 0419 0 RESISTOR 681 1 125W 0 100 24546 C4 1 8 TO 681R F A13R11 0698 3454 3 RESISTOR 215K 1 125W TC s 0 100 24546 4 1 8 0 2153 A13R12 2100 2522 1 1 RESISTOR TRMR 10K 10 C SIDE ADJ 1 TRN 30983 50 103 13 13 0698 6624 5 3 RESISTOR 2K 1 125W F 0 25 28480 0698 6624 13 14 0698 8827 4 RESISTOR 1M 1 125W TC 0 100 28480 0698 8827 A13R15 0698 6624 5 RESISTOR 2K 1 125W TC
262. 4 1 8 0 3161 52 40 2100 2514 1 1 RESISTOR TRMR 20K 10 C SIDE ADJ 1 TRN 30983 ET50W203 5341 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F 53 42 0757 0465 6 RESISTOR 100K 1 125W 0 100 24546 4 1 8 0 1003 AS3R43 0757 0460 1 RESISTOR 61 9K 1 125W 0 100 24546 4 1 8 0 6192 A53R44 0698 3154 2 RESISTOR 4 22K 1 125W 0 100 24546 4 1 8 0 4221 53845 0757 0200 7 RESISTOR 5 62K 1 125W 0 100 24546 C4 1 8 T0 5621 F 53846 0757 0442 9 RESISTOR 10K 1 125W F TC 0 100 24546 4 1 8 0 1002 5 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 A53R48 0757 0422 5 RESISTOR 909 1 125W 0 100 24546 C4 1 8 T0 909R F AS3R49 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1002 A53R50 0698 0085 0 RESISTOR 2 61K 1 125W 0 100 24546 C4 1 8 T0 2611 F A53R51 0698 3446 3 RESISTOR 383 1 125W F TC 0 100 24546 C4 1 8 T0 383R F A53R52 0698 0085 0 RESISTOR 2 61K 1 125W F TC 2 04 100 24546 C4 1 8 T0 2611 F A53R53 0698 0084 9 RESISTOR 2 15K 1 125W 0 100 24546 C4 1 8 T0 2151 F AS3R54 0698 3152 8 RESISTOR 3 48K 1 125W TC 0 100 24546 4 1 8 0 3481 53855 0698 3459 1 RESISTOR 383K 1 125W 0 100 28480 0698 3459 53856 0698 8638 5 1 RESISTOR 3 16K 1 125W 04 25 28420 0598 8638 53857 0757 0279 0 RESISTOR 3 16K 1 125W F TC 204 100 24
263. 4 1 8 T0 2153 F 4 1 8 0 4640 C4 1 8 T0 1003 F 4 148 0 3161 4 1 8 0 1621 4 1 8 0 1002 0698 3460 4 1 8 0 1002 C3 1 8 TO 100R F part change rev 16J UL90 ee es 1 8901 Replaceable Parts Table 6 3 Replaceable Paris Reference Pat Mfr j ty Description Mfr Part Number Designation Number D y Code A15TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A15U1 1826 0013 8 3 IC AMP LOW NOISE 99 PKG 06665 555741 A15U2 1826 0098 9 iC COMPARATOR TO 89 PKG 27014 1 211 A15U3 1826 0181 3 2 COMPARATOR GP DUAL TO 100 PKG 27014 LM318H 2314A TO 2531 4151 NOT ASSIGNED 2544A AND ABOVE A15W 8150 4819 4 WIRE 22 AWG 1X22 105C 28480 8150 4819 thefer section 7 tot update gatormation elected Component Eeler to section 71 A prit change rev 26JUL90 6 65 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Designation Number D Qty Description Code Mfr Part Number A16 08901 60250 SERIAL PREFIX 2314A TO 2636A OPTION 030 ONLY A16 08901 60250 0 1 BUFFER AMPLIFIER ASSEMBLY 28480 08901 60250 A16C1 0160 4535 4 12 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 A16C2 0160 4835 7 20 CAPACITOR FXD 1UF 4 1096 50 0 CER 28480 01604835 A16C3 0160 4801 7 2 CAPACITOR FXD 100PF 4 596 100VDC CER 28480 0160 4801 16 4 0160 45
264. 4 1 8 T0 5621 F A6R62 0757 0416 7 RESISTOR 511 1 125W TC 04 100 24546 C4 1 8 T0 511R F A6R63 0698 3152 8 RESISTOR 3 48K 1 125W TC 04 100 24546 C4 1 8 T0 3481 F AGR64 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 T0 101 F A6R65 2100 3207 1 2 RESISTOR TRMR 5K 10 C SIDE ADJ 1 TRN 28480 2100 3207 A6R66 0698 8955 9 1 RESISTOR 13 5K 1 1W F TC 04 10 28480 0698 8955 A6R67 0698 0082 7 RESISTOR 464 1 125W TC 0 100 24546 4 1 8 0 4640 A6R58 0757 0419 0 RESISTOR 681 1 125W TC 0 100 24546 C4 1 8 T0 68 1R F 6 69 0599 0149 9 1 RESISTOR 28 7K 196 1W F TC 0 15 28480 0699 0149 A6R70 0698 3447 4 RESISTOR 422 1 125W TC 20 100 24546 C4 1 8 T0 422R F A6R71 0757 0346 2 RESISTOR 10 1 125W F TC 0 100 24546 C4 1 8 T0 10R0 F A6R72 0699 0096 5 2 RESISTOR 12K 1 0 10 28480 06990096 A6R73 0698 4454 5 3 RESISTOR 523 1 125W TC 0 100 24546 C4 1 8 T0 523R F A6R74 0698 4454 5 RESISTOR 523 1 125W F TC 0 100 24546 C4 1 8 T0 523R F A6R75 0699 0096 5 RESISTOR 12K 1 1W TC 0 10 28480 0699 0096 A6R76 0698 4454 5 RESISTOR 523 1 125W 0 100 24546 C4 1 8 T0 523R F A6R77 0757 0444 1 4 RESISTOR 12 1K 196 125 TC 0 100 24546 4 1 8 10 1212 A6R78 0757 0443 0 RESISTOR 11K 1 125W 0 100 24546 C4 1 8 T0 1102 F A6R79 0699 0148 8 RESISTOR 31 6K 1 1W TC 04 15 28480 0699 0148 A6R80 0698 0082 7 RESISTOR 464 1 125W 0 100 24546 C4
265. 401 0 RESISTOR 100 1 125W 0 100 24546 4 1 8 0 101 A6R6 07570280 3 RESISTOR 1K 1 125W TC 04 100 24546 4 1 8 0 1001 A6R7 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 1001 F A6R8 0757 0441 B RESISTOR 8 25K 1 125W 04 100 24546 4 1 8 0 8251 A6R9 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 10 0757 0280 3 RESISTOR 1K 1 125W TC a 0 100 24546 4 1 8 0 1001 A6R13 NOT ASSIGNED A6R12 NOT ASSIGNED A6R13 0698 3160 8 RESISTOR 31 6K 1 125W 0 100 24546 C4 1 8 T0 3162 F ASR14 0757 0458 7 RESISTOR 51 1K 1 125W TC 04 100 24546 C4 1 8 T0 5112 F A6R15 0757 0458 7 RESISTOR 51 1K 1 125W TC 0 100 24546 4 1 8 0 5112 6 16 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002F A6R17 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 C4 1 8 T0 5111 F A6R18 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24545 CA4 1 8 TQ 5111 F 6 19 0698 2445 2 8 RESISTOR 348 1 125W TC 0 100 24546 C4 1 8 T0 348R F A6R20 0757 0441 8 RESISTOR 8 25K 1 125W 0 100 24546 C4 1 8 T0 8251 F A6R21 07570442 9 RESISTOR 10K 1 125W 0 100 24546 4 1 8 0 1002 A6R22 0698 3150 6 RESISTOR 2 37K 1 125W F TC amp 0 4 100 24546 C4 1 8 TO 237 1 F A6R23 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F A6R24 0757 0465 6 RESISTOR 100K 1 125W
266. 401 Q A6R129 0698 3454 3 A6TP1 1251 0600 0 6 2 1251 0600 0 A6U1 1826 0035 4 2 A6U2 1826 0043 4 4 A6U3 1826 0035 4 AGUA 1826 0716 8 1 605 1826 0606 5 7 606 1826 0102 6 1 A6U7 1826 0026 3 1 608 1820 1411 0 A6U9 1820 1216 3 6010 1820 1197 9 4 A6VR1 6 2 1902 0072 1 1 ABYRS 1902 0580 7 A6VRA 1902 3059 0 5 THefei to rection 7 fer information 6 38 Table 6 3 Replaceable Parts Description RESISTOR 464 1 125W F TC 0 100 RESISTOR 196 196 125W TC 04 100 RESISTOR 1K 1 25W TC 04 100 RESISTOR 51 1 196 125W TC 0 100 RESISTOR 11 6K 196 125W TC 204 100 RESISTOR 3 83K 196 125W TC 04 100 RESISTOR 7 5K 1 125W TC 04 100 RESISTOR 100 196 125W TC 0 100 RESISTOR 261 1 125W TC 0 100 RESISTOR 1 47K 196 125W TC 2 0 4 100 RESISTOR 26 1 1 125W TC 0 100 RESISTOR 3 48K 1 125W TC 0 100 RESISTOR 215K 196 125W TC 0 100 RESISTOR 21 5K 1 125W TC 0 100 NOT ASSIGNED RESISTOR 21 5K 1 125W TC 0 100 RESISTOR 21 5K 1 125W TC 0 100 RESISTOR 681K 1 125W TC 0 100 RESISTOR 511 196 125W F TC 0 100 NOT ASSIGNED RESISTOR 1M 1 125W TC 0 100 RESISTOR 22M 5 25W FC 900 1200 RESISTOR 1K 1 125W TC 2 04 100 RESISTOR 10K 1 125W TC 0 100 NOT ASSIGNED RESISTOR 5 11K 1 125W TC 2 0 100 RESISTOR 3 48K 196 125W F TC 0 100 RESISTOR 100K 1 125W F TC 0
267. 403 rev 296UL90 ST deron HP Part Number 0698 0083 0698 0083 0698 3405 0698 7195 0757 0402 0757 0402 0698 7219 0698 7206 0698 7222 0698 8827 0698 7199 1251 0600 1251 0600 1251 0600 1826 0372 1826 0372 1820 5543 c4 amp aA 2 dp Qty Table 6 3 Replaceable Parts Description RESISTOR 1 96K 1 125W TC 0 100 RESISTOR 1 96 1 125W 0 100 RESISTOR 422 1 5W TC 0 100 RESISTOR 19 6 1 05W TC 0 100 RESISTOR 110 1 125W TC 0 100 RESISTOR 110 1 125W TC 0 100 RESISTOR 196 1 O5W 204 100 RESISTOR 56 2 1 05W 0 100 RESISTOR 261 1 05W TC O 100 RESISTOR 1M 196 125W TC 0 100 RESISTOR 28 7 1 05W F TC 0 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC MISC 8 DIP P PKG IC MISC 8 DiP P PKG LOW BIAS H IMPD DUAL 8 DIP C s ornqossynent kiefer te see Mfr Code 24546 24546 28480 24546 24546 24546 24546 24546 24546 28480 24546 28480 28480 28480 28480 28480 28480 Replaceable Parts Mfr Part Number C4 1 8 TO 1961 F C4 1 8 TO 1961 F 0698 3405 C3 1 8 TO 19R6 F 4 1 8 0 111 4 1 8 70 111 C3 1 8 TO 196R F C3 1 8 TO 56R2 F C3 1 8 TO 261R F 0698 8827 C3 1 6 TO
268. 4546 24546 24546 24546 28480 24546 24546 24546 28480 24546 24546 24546 24546 24546 24546 24546 24546 19701 24546 03888 24546 24545 24546 24546 19701 24546 28480 24546 24546 24546 24546 24546 24546 24546 28480 24546 24546 24546 24546 28480 28480 28480 28480 d Model 8901 Mfr Part Number C5 1 4 T0 3160 F 4 1 8 0 2611 0699 0135 0699 0135 C3 1 8 TO46R4 F C3 1 8 TO 215R F C3 1 8 TO46R4 F C4 1 8 T0 825R F 4 1 8 0 4221 C4 1 8 T0 809R F 0699 0392 4 1 8 10 6811 4 1 8 70 8251 C3 1 8 TO 4 6R4 F 0757 0799 4 1 8 0 2611 C3 1 8 TO 51R3 F C3 1 8 TO 51R1 F C3 1 8 TO 287R F 4 1 8 0 4221 4 1 8 1211 1 8 51 1 4 1 8 0 1781 MF4C 1 8 T0 17RS8 F C4 1 8 T0 215R F PMESS 1 8 T0 23R7 F C4 1 8 T0 619R F C4 1 8 T0 287R F 4 1 8 70 2878 C4 1 8 T0 4221 F 1 8 TC 17Ra F C4 1 8 T0 51R1 F 07570180 C4 1 8 T0 51R1 F C4 1 8 T0 19R F C4 1 8 TC 287R F C4 1 8 TC 101 F 4 1 8 70 101 4 1 8 70 6198 C4 1 8 T0 46R4 F 0698 2821 4 1 8 0 46 4 4 1 8 70 1478 C4 1 8 T0 909R F 4 1 8 70 4221 08901 80031 08901 67001 0340 1098 1251 1555 rev 06NOV92 Model 8901B Reference Designation 18 18 18 1 18 2 A18C3 A18CA A18C5 A18C6 A18C7 A18C8 A18C9 A18C10 A18C11 A18C12 A18C13 A18C14 A18C15 A18C16 A18C17
269. 46 4 1 8 0 2151 AS4R44 07570274 5 RESISTOR 1 21K 196 125W 0 100 24546 4 1 8 1211 54845 0698 0084 8 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 5 46 0648 0084 9 RESISTOR 2 15K 1 125W 0 100 24546 4 1 8 70 2151 54 R47 0598 0082 7 RESISTOR 464 1 125W TC 04 100 24546 C4 1 8 TO A640 F AS4R48 0698 0084 9 RESISTOR 2 15 1 125W TC 204 100 24546 4 1 8 0 2151 AS4R49 07570465 6 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F A54R50 0757 0465 6 RESISTOR 100K 1 125W 0 100 24546 C4 1 8 T0 1003 F ASARS1 0698 3154 0 RESISTOR 4 22K 1 125W 0 100 24546 C4 1 8 T0 4221 F ASSTP 1 12510600 0 2 CONNECTOR SGL CONT 1 14 MM BSC SZ SO 28480 1251 0600 54 2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC S2 SQ 28480 1251 0600 AS4UT1 1826 0154 8 5 SWITCH ANLG DUAL TO 100 PKG 17856 DG200BA A54U2 1826 0154 8 IC SWITCH ANLG DUAL TO 100 PKG 17856 OG200BA 5403 1826 0154 8 SWITCH ANLG DUAL TO 100 PKG 17856 DG200BA A54UA 1826 0606 5 1 IC SWITCH ANLG QUAD 16 DIP C PKG 17856 DG2018K 5405 1826 0154 8 SWITCH ANLG DUAL TO 100 PKG 17856 DG200BA A54U6 SEE A71 5407 1820 1195 7 3 IC FF TTL LS D TYPE POS EDGE TRIG 01295 SN74LS175N 5408 1820 1195 7 FF LS D TYPE POS EDGE TRIG COM 01295 SN7418175N teed sition Refer te Sertion 53 JD palt echange
270. 48 0757 1094 9 A3RA9 0698 3159 5 A3R50 0698 8731 9 tRefer to Section 7 for opelate intor ation 6 18 Table 6 3 Replaceable Parts Description Mfr p Code NOT ASSIGNED RESISTOR 10K 1 125W TC 0 100 24546 RESISTOR 100K 1 125W 0 100 24546 RESISTOR 5 11K 1 125W TC 204 100 24546 RESISTOR 19 125W 0 100 24546 RESISTOR 5 11K 1 1325W F TC 0 100 24546 RESISTOR 22M 5 25W TC 900 1200 01121 RESISTOR 3 16K 1 125W TC 0 100 24546 RESISTOR 5 11K 1 125W TC a 0 100 24546 NOT ASSIGNED RESISTOR 10K 1 125W TC 04 100 24546 RESISTOR 1K 1 05W TC 0 4 100 24546 RESISTOR TRMR 2K 10 C SIDE ADJ 1 TRN 28480 RESISTOR 14 7K 1 125W TC 0 100 24546 RESISTOR 16K 1 125W TC 0 25 19701 RESISTOR 25K 1 125W TC 20 50 24546 RESISTOR 14 7 1 05W TC 0 100 24546 RESISTOR 12 5K 1 125W 0 25 19701 RESISTOR 6 25 1 125W TC 04 25 19701 RESISTOR 2 15M 1 125W TC 0 100 28480 RESISTOR 56 2K 1 125W TC 0 25 28480 RESISTOR 4 8K 1 1W TC 204 15 28480 RESISTOR 7 5K 1 125W 2 0 25 28480 RESISTOR 7 4K 25 125W TC 204 50 24546 RESISTOR 6 25 1 125W TC 0 25 19701 RESISTOR 4 8K 1 1W F TC a 04 15 28480 RESISTOR 4 22 1 O5W TC 0 100 24546 RESISTOR 316 1 05W TC 04 100 24546 RESISTOR 19 6 1 125W TC 0 100 24546 NOT ASSIGNED RESISTOR 4 8K 1 1W 0
271. 480 28480 28480 28420 28480 28480 6289 28480 28480 28480 26480 28480 28480 28480 28480 28480 28480 gt Eat rors ted c 1 Replaceable Parts Mfr Part Number 08901 60130 150D336X9035SA 1500156 902082 150D156X9020B2 150D156X902082 0180 2929 01604389 0160 4389 0160 0575 0160 0575 0160 4624 0160 0575 0160 0575 0180 2929 0160 2290 0160 4389 0160 0575 0160 0575 0160 4624 0160 2290 0160 4389 0160 4624 0160 2290 0160 4389 150D156X9020B2 0160 0575 0160 0575 0160 0157 1500336 90355 0160 4389 0160 4389 0160 0575 0160 0575 0162 5546 0160 5546 1520156 0160 3879 0160 3879 0169 3879 0160 3879 0160 3879 0160 5370 0160 3879 0160 3879 0160 3674 0160 3879 902082 6 145 Replaceable Parts Reference Designation A53C46 AS3C47 53 48 53 49 53 50 53 51 AS3C52 A53C53 5 1 AS3CR2 AS3CR3 AS3CRA AS3CR5 AS3K1 5 2 1 AS53Q1 A53Q2 5 AS53046 5305 AS3Q6 AS3Q7 5308 AS3QS AS3Q10 5301 1 A53Q12 53013 AS3O14 A53Q15 AS3R1 AS3R2 5 A53R4 AS3R5 A53R6 A53R7 A53R8 5 9 A53R10 AS3R1 1 A53R12 AS3R13 A53R14 53 15 A53R16 HP Part Number 0160 3879 0160 3879 0160 3324 0180 0197 0180 0197 0160 3879 0180 1746 0160 3879 1901 0895 1901 0895 1901 1098 1901 109
272. 5 A53U6 1820 1195 5307 1826 0043 5308 1826 0606 A53U9 1820 1195 A53U10 1820 1934 A53U11 1820 1729 53012 1820 1216 53013 1826 0371 A53U14 1820 0535 A53U15 1820 0535 A53U16 1820 1422 53017 1826 0471 AS3VR1 1902 3002 A53VR2 1902 3002 5 1902 0680 AS3VR4 1902 0947 AS53VR5 1902 0680 0 ht NUN OG amp Nan o NON Qty Refer to Section 7 for update information 6 148 Table 6 3 Replaceable Parts Description RESISTOR 6 19K 1 125W TC 204 25 RESISTOR 14 7K 1 125W TC 0 100 RESISTOR 23 7K 196 125W TC 0 100 RESISTOR 42 2K 1 125W 0 100 RESISTOR 10K 1 125W TC 2 0 100 RESISTOR 10K 1 125W TC 0 100 RESISTOR 42 2K 1 125W TC 0 100 RESISTOR 42 2K 1 125W TC amp 0 4 100 RESISTOR 1 33K 1 SW TC amp 0 100 RESISTOR 42 2K 1 125W TC 20 100 RESISTOR 21 5 1 F TC amp 0 100 RESISTOR 14 7 1 5W TC 0 100 RESISTOR 2 61K 1 125W TC 20 100 CONNECTOR SGL CONT PIN 1 14 MM BSC S2 SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 5 52 SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC OP AMP GP DUAL TO 99 PKG OP AMP GP DUAL TO 99 PKG IC OP AMP GP TO 99 PKG IC
273. 5 0 2 RESISTOR 2 61K 1 125W 04 100 24546 C4 1 8 T0 2611F A20R24 0698 3260 9 1 RESISTOR 464K 1 125W TC 0 100 28480 0698 3260 A20R25 0698 3266 5 1 RESISTOR 237K 1 125W TC 0 100 24546 4 1 18 0 2373 A20R26 0698 7286 7 2 RESISTOR 121K 1 OSW TC 0 100 24546 C3 1 8 T0 1213 F A20R27 NOT ASSIGNED A20R28 NOT ASSIGNED A20R29 0698 3438 3 1 RESISTOR 147 1 125W 0 100 24546 4 1 8 0 1478 A20R30 0698 3154 0 RESISTOR 4 22K 1 125W 0 100 24546 4 118 704223 A20R31 0698 7259 4 2 RESISTOR 9 09 1 05W TC 0 100 24546 C3 1 8 T0 9091 F 2535A TO 2718A A20R32 0698 7260 7 RESISTOR 10K 1 05W TC 04 100 24546 C3 1 8 T0 1002 F 2804A AND ABOVE A20R32 0698 7259 4 RESISTOR 9 09K 1 05W TC 0 100 24546 C3 1 8 TO 909 1 F A20R33 0698 7244 7 RESISTOR 2 15K 1 05W TC 0 4 100 24546 C3 1 8 T0 2151 F A20R34 0698 7244 7 RESISTOR 2 15K 1 05W TC 2 0 100 24546 C3 1 8 TO 2151 F 2535A TO 2718A A20R35 0698 3154 0 RESISTOR 4 22 1 325W TC 0 100 24546 4 1 8 0 4221 2804A AND ABOVE A20R35 0698 3152 8 RESISTOR 3 48K 1 125W F TC404 100 24546 4 1 8 3481 change rec 1GJULIO Model 89018 Reference Designation A20 A20R36 A20R37 A20R38 A20R39 A20R40 A20R41 20942 A20RA3 20944 2045 A20RA6 A20R47 A20R48 A20RA9 A20R50 A20R51 A20R52 A20R53 A20R54 A20R55 A20R56 20 57 A20R58
274. 5 1820 1205 1 IC GATE TTL LS NAND DUAL 4 INP 01295 1820 1205 A19VR1 1902 0777 1 DIODE ZNR 1N825 6 2V 5 DO 7 PD 4wW 04713 1 825 A13W1 8159 0005 11 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 A12W2 8159 0005 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 Refer to Section 7 for update information rev 01JUL91 Factory Selected Component Refer to Section 5 Errata part change 6 55 SS OE rev 16 11 90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Q Mir ty Description Mtr Part Number Designation Number 0 y P Code 2314A TO 2514A A14 08901 60223 7 1 REMOTE INTERFACE ASSEMBLY 28480 08901 60223 2515A AND ABOVE A14 08901 60268 0 1 REMOTE INTERFACE ASSEMBLY 28480 08901 60268 A14C1 0180 0229 7 CAPACITOR FXD 33UF 10 10VDC 56289 150D336X9010B2 14 2 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 A14C3 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 01604832 A14C4 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 5 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 6 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A14C7 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A14C8 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A14C9 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 14 10 0160 4832 4 CAPACITOR FXD 01UF 10
275. 5 28480 0699 0678 54 12 0699 0681 4 RESISTOR 100 01 1W FTO 0 5 28480 0699 0681 ASAR13 0698 3441 8 RESISTOR 215 1 125W F TC 0 100 24546 C4 1 8 T0 215R F 54814 0698 3441 8 RESISTOR 215 1 125W TC 04 100 24546 C4 1 8 T0 215R F A54R15 0757 0274 5 RESISTOR 1 21K 1 125W TC zO 100 24546 C4 1 8 TO 1211 F A54R16 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F 5 17 0698 0084 9 RESISTOR 2 15 1 125W 0 100 24546 C4 1 8 T0 2151 F A54R18 0692 0082 7 RESISTOR 464 1 125W TC O 100 24546 C4 1 8 T0 4640 F AS6R19 0757 0274 5 RESISTOR 1 21K 1 125W 0 100 24546 4 1 8 1211 54 20 0692 344 1 8 RESISTOR 215 1 125W 04 100 24546 C4 1 8 T0 215R F AS4R21 0699 0678 9 RESISTOR 900 019 1 0 5 28480 06930678 A54R22 0699 0681 4 RESISTOR 100 01 IW 04 5 28480 0699 0681 ASAR23 0757 0274 5 RESISTOR 1 21K 1 125W TC 20 100 24546 4 1 8 1211 ASAR24 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 4 1 8 0 215 ASAR25 0757 0279 0 1 RESISTOR 3 16 1 125W TC 0 100 24546 C4 1 8 T0 3161 F A54R26 0757 0394 0 RESISTOR 51 1 19 125W TC 0 100 24546 C4 1 8 T0 51R1 F A54R27 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 0 2151 A54R28 0698 3441 8 RESISTOR 215 1 125W 0 4 100 24546 C4 1 8 T0 215R F ASAR29 0698 6317 3 1 RESISTOR 500 1 125W 0 25 03888 PME55 1 8 T9
276. 5 CONT ROW 2 ROWS 28480 1251 2035 A25XA7 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 25 8 1251 2035 9 CONNECTOR PC EDGE 15 CONT ROW 2 ROWS 28480 1251 2035 25 9 49 NOT ASSIGNED 25 50 1251 1365 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 25 51 1251 1265 6 CONNECTOR PC EDGE 22 CONTIROW 2 ROWS 28480 1251 1365 25 52 1251 1365 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 25 53 1251 1365 6 CONNECTOR PC EDGE 22 CONT ROW 2 ROWS 28480 1251 1365 heles 7 for updare aides sabia tbaetegs Selbe tero onipanent fe ves tieg o aat change rev 16JUL90 6 113 IL Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part at D Mfr Part Number Designation Number 0 y 26 98901 60142 9 POWER SUPPLY MOTHER BOARD ASSEMBLY 28480 08901 60142 26 1 0160 0889 3 1 CAPACITOR FXD 33UF 10 80VDC POLYE 28480 0160 0889 A26C2 0160 0168 1 1 CAPACITOR FXD 1UF 10 200VDC POLYE 28480 0160 0168 A26C3 0180 3017 7 1 CAPACITOR FXD 045F 75 10 25VDC AL 28480 0180 3017 2190 0034 5 10 WASHER LK HLCL NO 10 1944N ID 28480 2190 0034 2680 0099 1 8 SCREW MACH 10 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION A26C4 0180 0480 2 1 CAPACITOR FXD 4500UF 75 10 25VDC AL 00853 5004520025 2 2190 0034 5 WASHER LK HLCL NO 10 194 IN ID 28480 2190 0034 2680 0099 1 SCREW MACH
277. 5 IN ID 28480 3050 0105 0380 1230 6 SPACER RND 45 IN LG 147 IN ID 00000 ORDER BY DESCRIPTION 5041 3616 3 4 LIGHT PIPES SEE SECTION 7 28480 5040 3616 melee ted Compenewt i Petes io coc tien o Ab aurata patt rev 16JUL90 a ee rev 16JULIO Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Mfr Designation Number D Qty Description Code Mfr Part Number MISCELLANEOUS PARTS 2314A TO 2334A MP16 08901 20230 2 1 REAR PANEL 28480 08901 20230 2348A TO 2514A MP16 08901 20233 5 1 REAR PANEL 28480 08901 20233 2515A AND ABOVE 16 08901 20272 2 REAR PANEL 28480 08901 20272 2314A 2449A 17 08901 00078 4 1 CENTER STRUT 28480 08901 00078 0624 0100 5 11 SCREW TPG 4 40 5 IN LG STL 28480 0624 0100 2200 0107 6 8 SCREW MACH 4 40 375 IN LG PAN HO POZI 00000 ORDER BY DESCRIPTION 2360 0116 5 2 SCREW MACH 6 32 3124N LG 82 DEG 00000 ORDER BY DESCRIPTION 23600117 6 14 SCREW MACH 6 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2505A 2909A 17 08901 00078 4 1 CENTER STRUT 28480 08901 00078 0624 0653 3 111 SCREW 440 1 2 TAPTITE 10 PNTX 28480 0624 0653 2200 0107 6 8 SCREW MACH 4 40 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2360 0116 5 2 SCREW MACH 6 32 312 IN LG 82 DEG 00000 ORDER BY DESCRIPTION 2360 0117 6 14 SCREW MACH 6 32 375 IN LG 00000 ORDER BY DESCRIPTION 2619 AND ABOVE 17 08901 00171 8 4 CENT
278. 5 PD 4W DIODE ZNR 12V 5 00 35 PD 4W TC 077 Eacioiy velected Mfr Code 24546 28480 28480 24546 28480 24546 19701 24546 24546 24546 24546 19701 24546 24546 24546 24546 24546 24546 28480 28480 28480 28480 28480 28480 28480 28480 28480 24046 28480 28480 28480 28480 Fection Lo Model 8901B Mfr Part Number 4 1 8 0 2151 0811 3293 8110 0180 C4 1 8 10 4221 F 0698 5805 C4 1 8 TO 511R F 4 1 8 0 1332 4 1 8 0 1472 4 1 8 0 1212 4 1 8 0 4221 C4 1 8 T0 1002 F MF4C 1 8 T0 1332 F 4 1 8 0 2151 C4 1 8 T0 1001 F C4 1 8 T0 3162 F C4 1 8 TO 1211 F C4 1 8 T0 101 F C4 1 8 T0 101 F 1251 0600 1251 0600 1251 0600 1251 0600 12510600 1251 0600 1251 0600 1820 5543 1820 5543 1N827 1902 0968 1902 3214 1902 3214 1902 0960 A Poraa pari 16 701 90 Model 8901B Reference Designation A10vR6 A10VR7 A10VR8 A10VR9 A10VR10 A10VR11 A10VR12 HP Part Number 1902 3182 1902 3333 1902 0952 1902 0952 1902 3301 1902 0943 1902 0943 Onan wo Qty Refer to Section 7 for update information rev O1JUL91 Table 6 3 Replaceable Parts Description DIODE ZNR 12 1V 5 DO 35 PD 4W TC 077 DIODE ZNR 46 4V 5 DO 35 PD 4W DIODE ZNR 5 6V 5 00 35 PD 4W 046 DIODE ZNR 5 6V 5 DO 35 PD 4W TC 04696 DIODE
279. 52 0020 4 1104 1853 0020 4 A11Q5 1854 0071 7 1181 0757 0442 9 A11R2 0757 0442 9 1183 0698 8812 7 ATIRA 0698 8816 1 1185 0757 0345 2 A11R6 0757 0416 7 At1R7 07570442 9 ATIRE 0757 0463 4 A11R9 0757 0416 7 A11R10 0757 0465 6 1817 0757 0394 0 1 12 1810 0204 6 A11R13 0757 0397 3 A11R14 0757 0240 3 A11R15 0698 3445 2 fRefer to Section 7 for update information 6 46 15 Table 6 3 Replaceable Parts Description DIODE SM SIG SCHOTTKY LED LAMP LUM NT 12 IF CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 1954 40 NUT HEX DBL CHAM 10 32 THD 0674 CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 N ID NUT HEX OBL CHAM 10 32 THD 067 JN THK CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 1954N4D NUT HEX DBL CHAM 10 32 THD 0674N THK CONNECT OR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 1954 40 NUT HEX DBL CHAM 10 32 THD 0674N THK CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 AN4D NUT HEX DBL CHAM 10 32 THO 0674N THK CONNECTOR RF SMC M 50 OHM WASHER LK INTL T NO 10 1954N4O0 NUT HEX DBL CHAM 10 32 THD 0674 NOT ASSIGNED INDUCTOR RF CH MLD 120NH 10 1050X 26LG COVER COUNTER SCREW MACH 6 32 25 114 PAN HD POZI LABEL 1 D EXCEPT 002 TRANSISTOR PNP SI TO 92 625MW TRANSISTOR PNP Si 92 625 TRANSISTOR PNP 5 390MW 1SOMHZ TRANSISTOR PNP SI 30CMW FT 150MHZ TRANSIS
280. 52 F 862 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T9 215R F 4963 07570346 2 16 RESISTOR 10 1 125W TC 0 4 100 24546 C4 1 8 T0 10R0 F ASRG4 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F A4R65 0698 3441 RESISTOR 215 1 125W 04 100 24546 C4 1 8 T0 215R F AAR66 0698 3430 5 RESISTOR 21 5 1 125W 20 100 03888 PMES55 1 e TO 21R5 F sectio 7 for update elected section breata part change 6 24 rev 16JUL90 te ee 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Qt D ase Mfr escription Mfr Part Number Designation Number D y Code A4R67 0757 0442 9 RESISTOR 10K 1 125W F TC 2 04 100 24546 C4 1 8 T6 1002 F AAR68 0757 0346 2 RESISTOR 10 1 125W TC 0 100 24546 C4 1 8 T0 10R0 F AAR69 0698 8731 9 RESISTOR 4 8K 1 F TC 0 4 15 28480 06988731 AAR70 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 A4R7 1 0698 8731 9 RESISTOR 4 8K 196 TC 204 15 28480 0698 8731 AAR72 0698 3155 1 RESISTOR 4 64 1 125W 0 100 24546 C4 1 8 T0 464 1 F A4R 3 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F A4R74 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 4 1 8 70 2151 4875 0698 8821 8 2 RESISTOR 5 62 1 125W 0 100 28480 0698 8
281. 546 24546 24546 28480 24546 24546 24546 28480 24546 24546 24546 24546 24546 24546 24546 24546 03888 24546 SS Model 8901B Part Number 1854 0071 1854 0071 1853 0018 2N2222A 2 3251 2 3251 1854 0610 PMESS5 1 8 TO 19R6 F PMES55 1 8 TO 19R6 F 4 1 8 0 5111 4 1 8 0 4641 4 1 8 0 1781 4 1 8 0 3831 C4 1 8 TO 34R8 F 4 1 8 0 619 C4 1 8 T0 511R F C4 1 8 T0 511R F C4 1 8 TO 147R F 4 1 8 0 5111 C4 1 8 TO 1961 F C5 1 4 TO 1001 F PMES55 1 8 TO 19R6 F C4 1 8 T0 3823RF C4 1 8 T0 383R F C4 118 T0 348R F 2100 0552 4 1 8 10 2371 C4 1 8 TO 316R F C4 1 8 T0 196R F 2100 3350 C4 1 8 T0 383R F 4 1 8 0 111 C4 1 8 T0 56R2 F 4 1 8 10 111 C4 1 8 T0 2871 F C4 118 T0 422R F 4 1 8 0 101 C4 1 8 T0 909R F PMESS 1 8 T0 23R7 F C4 V8 TO 101 F A Errata part change rev 16 JUL9O OS le rev 16 JULIO Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part docu Mfr ty Description Mfr Part Number Designation Number D y P Code A19 08901 60024 08901 60274 SERIAL PREFIX 2314A TO 2806A 2314A TO 2619A 19 08901 60024 6 1 LO DIVIDER ASSEMBLY 28480 08901 60024 2622A TO 2806A 19 08901 60274 8 1 LO DIVIDER ASSEMBLY 28480 08901 60274 19 1 0160 0570 9 CAPACITOR FXD 220PF 20 100VDC CER 20932 5024EM100RO221M 19 2 0160 3878 6 CAPACITOR FXD 1000PF 20 100V
282. 546 C4 1 8 T0 3161 F 53858 0698 3160 8 RESISTOR 21 6 1 125W TC 0 100 24546 4 1 8 10 3162 5 59 0698 0083 8 RESISTOR 1 96K 1 125W TC 2 0 100 24546 C4 1 8 TO 1961 F AS3R60 0698 3443 0 RESISTOR 287 1 125W TC 0 100 24546 C4 1 8 T0 287R F A53R61 0698 3156 2 RESISTOR 14 7K 1 125W TC 20 100 24546 4 1 8 0 1472 A53R62 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 1001 F A53R63 0757 0470 3 RESISTOR 162K 1 125W 0 100 24546 C4 1 8 T0 1623 F A53R64 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F AS3R65 0811 1557 5 1 RESISTOR 15 5 3W PW TC 0 20 28480 0811 1557 AS3R66 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F estan T for information elected id tea tes tieg A part honge rev 16 JUL90 6 147 Replaceable Parts Reference HP Part Designation Number A53R67 0699 0842 AS53R68 0698 3156 A53R69 0698 3158 5 70 0698 3450 A53R71 0757 0442 A53R72 0757 0442 5 7 0698 3450 53 74 0698 3450 A53R75 0698 3406 53 76 0698 3450 2314 2428 AS3R77 0698 3391 2432A AND ABOVE 53 77 0698 3388 A53R78 0698 0085 ASSTP1 1251 0600 5 2 1251 0600 AS3TP3 1251 0600 5 4 1251 0600 5 5 1251 0600 1251 0600 AS3TP7 1251 0600 A53U19 1826 0990 5302 1826 0111 AS3US 1826 0043 AS3UA 1826 0606 5305 1820 119
283. 57 0401 0 A5R12 0757 0442 9 5 13 0698 3154 0 12 A5R14 0698 3132 4 11 16 Section 7 for update information 6 28 Table 6 3 Replaceable Parts Description DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SM SIG SCHOTTKY DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SM SIG SCHOTTKY DIODE SWITCHING 30V SOMA 2NS 00 35 DIODE SWITCHING 30V SOMA 2NS 00 35 DIODE SWITCHING 1N4150 50V 200MA ANS DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE SWITCHING 30V 50MA 2NS DO 35 DIODE GEN PRP 125MA DO 35 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS INDUCTOR RF CH MLD 100UH 5 166DX 385LG COVER VOLT MTR WASHER LK EXT T NO 6 141 IN ID SCREW MACH 6 32 25 IN LG PAN HD POZI TRANSISTOR NPN 625MW 200MHZ TRANSISTOR PNP SI PD 300MW 150MHZ TRANSISTOR NPN 2N2222A SI TO 18 PD 500MW TRANSISTOR SI PD 300MW FT 150MHZ TRANSISTOR J FET 2N4393 N CHAN D MODE TRANSISTOR PNP SI 300MW FT 150MHZ TRANSISTOR NPN S PD 625MW FT 200MHZ NETWORK RES 14 DIP10 0K OHM X 13 RESISTOR TRMA 1M 20 C SIDE ADJ 1 TRN RESISTOR 2 1K 5 TC 204 5 RESISTOR 14 7M 1 125W TC 0 150 RESISTOR 10M 1 125W TC 0 150 RESISTOR 9 09K 1 125W TC 0 100 RESISTOR 2 1K 5 1W TC 20 5 RESISTOR 1 125W 0 100 RES
284. 5W 0 100 RESISTOR 750 1 125W TC 0 100 RESISTOR TRMH 50K 10 C SIDE ADJ 1 TRN RESISTOR 51 1K 1 125W F TC a 0 100 RESISTOR 38 3K 1 125W TC 0 100 RESISTOR 38 3K 1 125W TC 0 100 NOT ASSIGNED RESISTOR 42 2K 1 125W TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 17 8K 1 125W TC 0 100 RESISTOR 316 1 125W TC 0 4 100 RESISTOR 100K 1 125W TC 0 100 RESISTOR 287 1 125W 0 100 RESISTOR 316 1 125W TC 20 100 RESISTOR 21 5K 1 125W TC 204 100 RESISTOR 6 19K 1 125W 0 100 RESISTOR 619 1 125W 0 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT 1 14 MM BSC S2 50 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 52 SO CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC CONV RMS DC 14 DIP C PKG IC SWITCH ANLG QUAD 16 DIP C PKG IC AMP LOW BIAS H IMPD QUAD 14 DiP C IC AMP LOW BIAS H IMPD QUAD 14 DIP C IC SWITCH ANLG QUAD 16 DIP C PKG SWITCH ANLG QUAD 16 DIP C PKG ANALOG SWITCH 4 SPST 16 PIN ANALOG SWITCH 4 SPST 16 PIN tbastery sedeeted C onmqsonent te GG b tert Mfr Code 28480 28480 28480 28480 28480 28480 24546 28480 28480 28480 24546 24546 24546 28480 28480 24546 28480 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 19701 24546 28480 28489 28480 28480 28480
285. 6 1906 0098 9 4 DIODE MATCHED 1 28480 1906 0098 A23CR7 1906 0098 9 DIODE MATCHED 1 28480 1906 0098 A23CRB 1906 0098 9 DIODE MATCHED 1V 28480 1906 0098 A23CR9 1906 0098 9 DIODE MATCHED 1V 28480 1906 0098 A23CR10 1901 0033 2 DIODE GEN 180V 200MA DO 7 28480 1901 0033 A23CR 1 1901 0033 2 DIODE GEN PRP 180V 200MA DO 7 28480 1901 0033 A23CR12 1901 0033 2 DIODE GEN PRP 180V 200MA DO 7 28480 1901 0033 A23CR13 1901 0033 2 DIODE GEN PRP 180V 200MA DO 7 28480 1901 0033 A23CR14 1901 0033 2 DIODE GEN PRP 180V 200 DO 7 28480 1901 0033 A23CR15 1901 0518 B DIODE SM SIG SCHOTTKY 28480 1901 0518 A23DS1 1990 0326 3 2 LED LAMP LUM INT 300UCD IF SOMA MAX 28480 5082 4444 23052 1990 0326 3 LED LAMP LUM INT 300UCD IF SOMA MAX 28480 5082 4444 A236 9170 0029 3 CORE SHIELDING BEAD 28480 9170 0029 A23J1 1250 1220 0 CONNECTOR RF SMC 50 28480 1250 1220 2190 0124 4 WASHEAR LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A23J2 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A23L1 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 2312 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9160 3822 A23L3 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A23L4 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A23L5 9140 0210 1 INDUCTOR RF CH
286. 60 3879 1500685 9035 2 0160 3879 0160 3879 0160 3879 0160 3879 150D226X9015B2 150D226X9015B2 30D506G025CC2 Errata parni change rev 16101 90 rev 16JULIO 8901 Reference HP Part Qty Designation Number D A3C69 0180 0058 0 A3C70 0160 0134 1 A3C71 A3C72 0180 0116 1 A3073 0160 2055 9 A3C74 0160 2055 9 A3C75 0160 3879 7 A3C76 0180 0197 8 53 77 0180 0197 8 1 1901 0040 1 2 1901 0040 1 A3CR3 1901 1098 1 1901 0040 1 A3CR5 1901 0040 1 ASCRE 1901 0040 1 A3CR7 1901 0040 1 ASCRS 9 1901 1098 1 A3L1 9140 0137 1 A3L2 9100 1633 0 1 A3L3 9140 0137 1 A3MP1 08901 00021 7 1 23600113 2 1 1854 0477 7 2314A TO 2605A ASRI 0698 7353 9 1 2514A AND ABOVE ASRI 0698 6942 9 2 0698 5091 8 1 A3R3 0757 0349 5 1 2314 2505A AJSR4 0698 6343 5 e 2514A AND ABOVE ASR 0698 8191 5 5 0757 0280 3 A3R6 A3R7 0698 0085 0 16 A3R8 0698 3159 5 3 A3R9 0698 3161 9 4 10 A3R11 0757 0441 8 10 A3R12 0757 0441 8 A3R13 0757 0438 3 40 A3R14 0757 0441 8 to section 7 for update information Table 6 3 Replaceable Parts Description CAPACITOR FXD 50UF 75 10 25VDC AL CAPACITOR FXD 220PF 5 300VDC MICA NOT ASSIGNED CAPACITOR FXD 6 8UF 10 35VDC CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 20 100 CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR FXD 2 2UF 10 20VDC
287. 60 4830 2 CAPACITOR FXD 2200PF 10 100VDC CER 28480 0160 4830 19 40 0160 4830 2 CAPACITOR FXD 2200PF 20 100VDC CER 28480 01604830 19 43 0160 4830 2 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 4830 A19C42 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 A19C43 0160 4491 1 1 CAPACITOR FXD 8 2PF 5 200VDC CER 28480 0160 4491 a e Replaceable Parts Mode 8901B Table 6 3 Replaceable Parts Reference HP Part int Mfr Designation Number D Qty Description Code Mfr Part Number A19 08902 60126 SERIAL PREFIX 2909A AND ABOVE 19 44 19 45 19 46 19 47 19 48 A19C49 A19C50 19 51 19 52 19 53 19 54 19 55 19 56 A19C57 A19C58 19 59 19 60 A19C61 A19C62 A19C63 A19C64 19 65 19 66 19 67 19 68 19 69 19 70 A19CR1 19 2 19 A19CR4 A19CR5 A19CR6 A19CR7 A19CR8 A19CR9 1 10 19 1 19 2 1911 19 2 A19J3 ter tus 6 86 7 0160 3568 0160 4084 0160 3568 0160 4822 0160 4822 0160 0690 0160 4822 01604822 0160 4835 0160 4084 0160 4822 0160 4835 0160 0571 0160 4822 0160 4084 0160 0571 0160 4835 0160 4835 0180 1746 0160 3877 0160 3878 0160 0576 0160 0576 1901 0033 0122 0161 0122 0161 0122 0161 0122 0161 1901 0033 1901 1097 1901 1097 1901 0639 1901 0033 9170 0029 9170 0029 1250 1425 2180 0124 2950 0078 1250 1425 2190 0124 2950
288. 6289 1500156 9020 2 4 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 AACA 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 6289 150D225X8020A2 4 5 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 AAC6 0160 4492 2 3 CAPACITOR FXD 18PF 5 200VDC CER 0 30 28480 0160 4492 A4C7 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 AACB 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 4 9 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 4 10 0160 4492 2 CAPACITOR FXD 18PF 5 200VDC CER 0 30 28480 0160 4492 AAC11 0180 0197 B CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 A4C12 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 A4C13 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 4 14 0160 4084 8 CAPACITOR FXD 1UF 20 CER 28480 0160 4084 4 15 0160 4806 2 1 CAPACITOR FXD 5 100VDC CER 0 30 28480 0160 4806 4 16 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A4C17 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 4 18 0160 4832 4 32 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 4 19 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 4 20 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 AAC21 0180 0094 4 7 CAPACITOR FXD 100UF 75 10 25VDC AL 6289 3001076025002 4 22 0180 0197
289. 698 3441 0698 0084 0698 0084 0757 0274 0698 3443 0698 3443 0698 3443 0757 0400 0757 0400 0757 0280 0757 0280 0698 0084 0698 0084 0698 3441 08901 80070 1826 0154 1820 0535 1820 1216 1820 1195 1826 0989 D Qty Table 6 3 Replaceable Parts Description Mfr Code Replaceable Parts Mfr Part Number 08902 60108 SERIAL PREFIX 2642A AND ABOVE 6 wm mn 0 n a ow oo NN mo A t TJ c4 G c4 T for rev 16JUL90 OPTION 030 ONLY RESISTOR 100K 1 125W TC 0 100 RESISTOR 100K 1 125W 04 100 RESISTOR 1 21K 1 125W 0 100 RESISTOR 1 21K 19 125W TC 0 100 NOT SEPARATELY REPLACEABLE P 0 FL1 FACTORY SELECTED FOR FILTER OPTIONS NOT SEPARATELY REPLACEABLE P O FL2 FACTORY SELECTED FOR FILTER OPTIONS RESISTOR 90 9 196 125W F TC 0 100 RESISTOR 287 1 125W TC O 100 NOT SEPARATELY REPLACEABLE P O FL1 FACTORY SELECTED FOR FILTER OPTIONS NOT SEPARATELY REPLACEABLE P O FL2 FACTORY SELECTED FOR FILTER OPTIONS RESISTOR 1 21K 1 125W TC 0 100 RESISTOR 162 1 125W F TC 100 RESISTOR 287 1 125W TC 20 100 RESISTOR 1 21K 1 125W TC 0 100 RESISTOR 162 1 125W 0 100 RESISTOR 464 1 1252 TC 0 100 RESISTOR 287 1 125W TC 20 100 RESISTOR 287 1 125W TC 0 100 RESI
290. 7 0160 5340 0160 5340 0160 4267 0180 1746 0180 1746 0160 0576 0160 3674 0180 1746 0160 5036 0160 5036 0160 0576 0160 0576 0160 5036 0160 3879 0160 4801 0160 4832 0160 4832 0160 4832 Og Uu Oo tn ano c NON 4 OG NS Dei pela be Table 6 3 Replaceable Parts Description AUDIO COUNTER DISTORTION ANALYZER ASSY CAPACITOR FXD 68UF 1096 10VDC TA CAPACITOR FXD 1UF 1096 35VDC CAPACITOR FXD 1UF 10 35VDC CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 22UF 10 50VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 3 3PF 25PF 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 1UF 2096 50VDC CER CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 020 1 200VDC CAPACITOR FXD 03UF 1 200VOC CAPACITOR FXD 03UF 1 200VDC CAPACITOR FXD 02UF 1 200VDC CAPACITOR FXD 470PF 5 100VDC CER CAPACITOR FXD 1UF 20 CER CAPACITOR FXO 1UF 20 50VDC CER CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 02UF 1 200VDC CAPACITOR FXD 030 1 200VDC CAPACITOR FXD 03UF 1 200VDC CAPACITOR FXD 02UF 1 200VDC CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 02UF 1 200VDC CAPACITOR FXD 03UF 1 200VDC CAPACITOR FXD
291. 72 200MW 04713 2 5179 A55Q7 1853 0459 3 TRANSISTOR PNP SI PD 625 200MHZ 28480 1853 0459 A55Q8 1854 0404 0 TRANSISTOR NPN SI TO 18 360MW 28480 1854 0404 A55Q9 1854 0404 0 TRANSISTOR NPN Si 18 PD 360MW 28480 1854 0404 55010 1853 0459 3 TRANSISTOR PNP SI PO 625MW FT 200MHZ 284B0 1853 0459 A55Q11 1854 0404 0 TRANSISTOR NPN S TO 18 PD 360MW 28480 1854 0404 55012 1853 0459 3 TRANSISTOR PNP SI PD 625MW 200MHZ 28480 1853 0459 A55R1 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 AS55R2 0757 0465 6 RESISTOR 100K 1 125W 204 100 24546 C4 1 8 T0 1003 F 55 0757 0274 5 RESISTOR 1 21 1 125W TC 0 100 24546 4 1 8 1211 AS55RA 0757 0274 5 RESISTOR 1 21K 196 125W TC 0 4 100 24546 4 1 8 1211 55 5 0757 1094 9 RESISTOR 1 47 1 125W TC 0 100 24546 C4 1 8 T0 1471 F A55R6 0757 1094 8 RESISTOR 1 47 1 125W 04 100 24546 4 1 8 10 1471 55 0757 0400 9 3 RESISTOR 90 8 1 125W 20 100 24546 C4 1 8 T0 90R9 F 55 8 0698 3443 0 RESISTOR 287 1 125W 0 100 24546 C4 1 8 T0 287R F 55 9 0757 1094 9 RESISTOR 1 47K 1 125W 0 100 24546 C4 1 8 T0 1471 F 55 10 0757 1094 9 RESISTOR 1 47 1 125W TC 0 100 24546 4 1 8 0 1471 A55R11 07570274 5 RESISTOR 1 21K 1 125W TC 0 4 100 24546 4 1 8 1211 55 12 0757 0405 4 RESISTOR 162 1 125 100 24546 C4 1
292. 77 7 TRANSISTOR NPN 2N2222A SI TO 18 500MW 04713 2N2222A A20Q2 1853 0034 0 8 TRANSISTOR PNP S TO 18 PD 360MW 28480 1853 0034 20 1854 0477 7 TRANSISTOR NPN 2N2222A SI 18 PD 500MW 04713 2N2222A 2004 1853 0034 0 TRANSISTOR PNP SI TO 18 PD 360MW 28480 1853 0034 A20Q5 1854 0247 9 8 TRANSISTOR NPN SI TO 39 PD 1W FT BDOMHZ 28480 1854 0247 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 A2006 1854 0477 7 TRANSISTOR NPN 2 2222 TO 18 PD 500MW 04713 2N2222A A20Q7 1853 0034 0 TRANSISTOR PNP SI 18 PD 360MW 28480 1853 0034 2008 1654 0023 9 4 TRANSISTOR NPN 18 PD 360MW 28480 1854 0023 2009 1854 0023 9 TRANSISTOR NPN SI 18 360MW 28480 1854 0023 20010 1855 0273 3 2 TRANSISTOR J FET P CHAN D MODE 92 51 28480 1855 0273 20011 1855 0273 3 TRANSISTOR J FET D MODE 92 1 28480 1855 0273 20012 1854 0023 9 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0023 20013 1855 0420 2 TRANSISTOR J FET 2 391 D MODE 01295 254291 A20Q14 1854 0404 0 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 20015 1854 0404 0 TRANSISTOR NPN St TO 18 PD 360MW 28480 1854 0404 A20Q16 1854 0404 0 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0404 20017 ASSIGNED 20018 1855 0420 2 TRANSISTOR J FET 2 4391 N CHAN D MODE 01295 2N4391 20019 1853 0020 4 TRANSISTOR PNP SI 300MW 150MHZ 28480 1853 0020 A20Q20 1854 0022 8 4 TRANSISTOR NPN SI 39 PD 700MW 07263
293. 8 1901 1098 0490 1063 0490 1063 08901 00075 2190 0008 2360 0113 1854 0810 1854 0637 1200 0173 1855 0414 1853 0459 1854 0810 1853 0459 1853 0459 1853 0459 1854 0810 1854 0810 1854 0810 1853 0459 1853 0459 1853 0459 0699 0075 0698 3450 0696 3159 0698 3450 0698 3156 0757 0459 0698 3431 0757 0280 0757 0444 0757 0442 0757 0463 0757 0346 2100 2655 0698 3160 0698 3451 2100 2655 4 A o a A A NOMA 0 0 OM WA tH NY WD n f9 Qty te section 7 for imltoriuation 6 146 Table 6 3 Replaceable Parts Description CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 1UF 5 100VDC MET POLYC CAPACITOR FXD 2 2UF 10 20VDC CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR EXD 01UF 20 100VDC CER CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 01UF 20 100VDC CER DIODE SM SIG SCHOTTKY DIODE SM SIG SCHOTTKY DIODE SWITCHING 184150 50V 200MA ANS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 SOV 200MA 4 5 RELAY REED 2A 500MA 5 5VOC COIL 10VA RELAY REED 2 500MA 50VDC 5VDC COIL 10VA COVER RF POWER WASHER LK EXT T NO 6 141 IN tD SCREW MACH 6 32 25 IN LG PAN HO POZI NOT ASSIGNED TRANSISTOR NPN 1 PD 625MW FT 200MHZ TRANSISTOR NPN 2N2219A S TO 5 PD INSULATOR XSTR DAP GL TRANSISTOR J FET 2N4393
294. 8 6502 C4 1 8 T0 196R F C4 1 8 T0 4221 F C4 1 8 T0 1962 F 4 1 8 0 2611 4 1 8 0 9091 4 1 8 0 1622 4 1 8 70 4221 C4 1 8 T0 101 F 4 1 8 0 8251 C3 1 8 TO 51R 1 F C3 1 8 TO 100 R F C4 1 8 T0 751 F C3 1 8 TO 100R F C4 1 8 T0 511R F C4 1 8 T0 751 F C4 1 8 T0 2610 F C3 1 8 TO 100R F 4 1 8 70 5111 C4 1 8 TO 5111 F 1251 0600 1251 0600 1251 0600 LM201AL LM2C1AL LM201AL LF256H CD4013BAE LM339N SN74LS138N SN74LS75N 5 7510 7 1902 3059 1 827 1902 3104 1902 3104 A change 6 139 Model 8901B Reference Designation A52 52 52 1 52 2 52 3 52 4 52 5 52 6 52 7 52 8 52 9 52 10 52 11 52 12 52 13 52 14 52 15 52 16 52 17 52 18 52 19 52 20 52 21 52 22 52 23 52 24 52 25 52 26 A52C27 52 28 52 29 52 30 52 31 52 32 A52C33 52 34 52 35 52 36 52 37 52 33 52 39 52 40 52 41 52 42 52 43 52 44 52 45 fele Tes Mea rev 162UL90 HP Part Number 08901 60131 0180 2929 0180 0291 0180 0291 0160 3879 0160 5098 0160 3879 0160 3879 0160 3879 0160 4797 0160 3879 0160 0576 0160 0576 0180 1746 0160 4267 0160 5340 0160 5340 0160 4267 0160 4768 0160 0576 0160 0576 0160 0576 0160 4267 0160 5340 0160 5340 0160 4267 0180 1746 0160 426
295. 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 23 36 0180 2617 1 CAPACITOR FXD 6 8UF 10 35VDC TA 25088 D6R8GS1B35K A23C37 0160 4653 7 1 CAPACITOR FXD 1UF 4 595 100VDC MET POLYP 28480 01604653 23 38 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC TA 56289 150D105X9035A2 23 39 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC 56289 150D105X9035A2 A23C40 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 23 41 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A23C42 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 23 43 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0160 0571 23 44 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0160 0571 theler section 7 for iiloriiatinn Factors ted CGimpowent esien fa 5 bara change rev 16JUL9O 6 107 Replaceable Parts 8901 Table 6 3 Replaceable Parts Reference HP Part C nfi Mfr d ty Description Mfr Part Number Designation Number D y Code 23 45 2 0160 3568 1 1 CAPACITOR FXD 2 7 25PF 200VDC CER 28480 0160 3568 A23CR 1902 0041 4 DIODE ZNA 5 11V 5 00 35 PD 4W 28480 1902 0041 A23CR2 1902 0041 4 DIODE ZNR 5 11V 5 DO 35 PD 4W 28480 1902 0041 A23CR3 1902 004 1 4 DIODE ZNR 5 11V 5 35 PD 4W 28480 1902 0041 A23CR4 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A23CR5 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A23CR
296. 8 CAPACITOR FXD 2 2UF 1099 20VDC TA 56289 1500225 9020 2 4 23 0180 0094 4 CAPACITOR FXD 100UF 75 10 25VDC AL 56289 3001076025002 4 24 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 150D156X9020B2 4 25 0180 0094 4 CAPACITOR FXD 100UF 75 10 25VDC AL 56289 30D107G0250D2 A4C26 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 150D156X9020B2 A4C27 0160 5699 3 3 CAPACITOR FXD 20 54 100VDC CER 0 30 28480 0160 5699 A4C28 0160 5699 3 CAPACITOR FXD 20PF 5 100VDC CER 0 30 28480 0160 5699 4 29 0160 0162 5 1 CAPACITOR FXD 022UF 10 200VDC POLYE 28480 0160 0162 4 30 0160 0153 4 3 CAPACITOR FXD 1000PF 10 200VDC POLYE 28480 01600153 A4C31 0160 4805 1 2 CAPACITOR FXD 47PF 5 100VDC CER 0 30 28480 0160 4805 4 32 0160 4808 4 1 CAPACITOR FXD 470PF 5 100VDC CER 28480 0160 4808 4 33 0160 5491 3 1 CAPACITOR FXD 240 5 100VDC CER 28480 0160 5491 4 34 ASSIGNED 4 5 0160 4799 2 1 CAPACITOR FXD 2 2PF 25PF 100VDC CER 28480 0160 4799 4 36 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 150D156X9020B2 A4C37 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 4 38 0160 4801 7 3 CAPACITOR FXD 100PF 5 100VDC CER 28480 0160 4801 A4C39 0160 3501 2 5 CAPACITOR FXD 4UF 10 50VDC MET POLYC 28480 0160 3501 4 40 NOT ASSIGNED 4 41 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 4 42 0160 4812 0 5 CAPACITOR FXD 220PF 5 100VDC CE
297. 8 TO 1002 F 4 1 8 2610 C3 1 8 TO 75 1 F C3 1 8 TO 19R6 F C4 1 8 T0 6192 F C4 1 8 TO 51 Rt F 0757 0394 4 1 8 0 6192 0757 0416 ET50X201 C4 1 8 T0 511R F 4 1 8 790 5118 C4 1 8 T0 68R1 F C4 1 8 T0 68R1 F C4 1 8 TO 511R F C4 1 8 TO 511R F 0757 0346 C4 1 8 T0 511R F C4 1 8 T0 511R F C4 1 8 T0 68R1 F C4 1 8 T0 68R1 F C4 1 8 TO 68 1 C4 1 8 T0 511R F C4 1 8 T0 511R F C4 1 8 TO 511R F 4 1 8 0 2610 4 1 8 0 2610 4 1 8 70 2610 4 1 8 0 1002 4 1 8 0 909 4 1 8 0 2372 C4 1 8 T0 75R0 F C4 1 8 T0 511R F C4 1 8 T0 1003 F C4 1 8 T0 68R1 4 1 8 70 6881 CA 1 8 T0 422R F 4 1 8 0 68 1 4 1 8 1961 4 ads rev 126UL90 a es 2 a o Model 8901B Replaceable Parts Table 6 3 Replaceable Paris Reference HP Part inti Mfr Designation NUmbe D Qty Description Code Mfr Part Number A19 08902 60126 SERIAL PREFIX 2909A AND ABOVE A19R72 A19R73 A19R74 A19R75 19876 A19R77 A19R78 A19R79 A19R80 A19R81 A19R82 A19R83 A19R84 19 85 19 86 A19R87 A19R88 A19R89 A19R90 A19R91 A19R92 A19R93 A19R94 A19R95 A19R96 19897 19898 19899 A19R100 A19R101 198102 19 103 198104 4198105 A1SR106 198107 A19R108 A19R109 19 110 A10R111 A19R112 A19R113 A19R114 A19R115 198116 sheeted It 75 rev 1 JUL90 0757 0422 0757 04
298. 80 28480 28480 284B0 28480 28480 28480 28450 28480 28480 28480 28480 28480 28480 00000 28480 28480 28480 28480 28480 28480 28480 28480 04713 04713 28480 01295 04713 24546 24546 24546 24546 28480 28480 28480 02111 28480 28480 28480 24546 24546 24546 Factory Selected Component Refer to section 51 Model 8901B Mfr Part Number 9140 0137 8140 0137 8140 0293 9140 0293 9100 1653 9140 0291 9100 1645 9140 0292 0140 0280 9100 1660 9140 0281 9100 1654 9100 1651 9100 1648 08901 00022 ORDER BY DESCRIPTION 08901 00014 08901 00015 08901 00050 08901 00051 08901 00052 08901 00053 1854 0475 1854 0071 2N3251 2 2222 1854 0071 2 2904 2N2218A 4 1 8 0 1002 4 1 8 0 1002 4 1 8 6191 4 1 8 6191 0699 0140 0699 0139 0698 8556 43P500 0699 0140 0699 0144 0699 0145 4 1 8 0 1333 C3 1 8 TO 196R F 3 1 8 0 2151 5 possi rev J6EJULIO a o Model 890 1B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part in Mfr ty Description Mfr Part Number Designation Number y P Code A2R13 0698 7244 7 RESISTOR 2 15K 1 05W TC 0 100 24546 C3 1 8 TO 2151 F A2R14 0698 7244 7 RESISTOR 2 15K 1 05W TC 0 100 24546 C3 1 8 T0 2151 F 2915 0698 7244 7 RESISTOR 2 15K 1 05W F TC 0 100 24546 C3 1 8 T0 2151 F A2R16 0698 3457 6 2 RESISTOR 316K 1 125
299. 82 5 1 125W TC 0 100 RESISTOR 13 3K 1 125W TC 0 100 RESISTOR 5 11 1 125W F TC 0 100 TRANSFORMER RF GRN TRANSFORMER RF GRN CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CRYSTAL QUARTZ 9 26 MHZ HC 42 U HLDR SOCKET XTAL 2 CONT HC 25 U DIP SLDR CRYSTAL QUARTZ 11 26 MHZ HC 42 U HLDR SOCKET XTAL 2 CONT HC 25 U DIP SLDR CRYSTAL 9 26 MHZ CLIP CMPNT 129D 154 DIA STL CRYSTAL 9 26 MHZ CLIP CMPNT 129D 154 DIA STL selected C ompouecnt Mfr Code 24546 24546 24546 07716 07716 24546 24546 24546 24546 07716 07716 24546 24546 03888 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 19701 24546 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 1 Replaceable Parts Mfr Part Number 4 1 8 0 4640 4 1 8 0 4640 4 1 8 0 4640 MAR 1 10 T10 2003 B MAR 1 10 T10 2003 B C4 1 8 T0 348R F C4 1 8 T0 75R0 F 4 1 8 0 4640 1 8 0 4640 MAR 1 10 T10 2003 B MAR 1 10 T10 2003 B C4 1 8 TO 90R9 F 1 8 0 4640 55 1 8 0 21 5 C4 1 8 TO 51R1 F C4 1 8 T0 38R3 F 4 1 8 0 825 C4 1 8 T0 51R1 F C4 1 8 T0 1472 F C4 1 8 T0 383R F C4 1 8 T0 5111 F C4 1 8 T0 121R F C4 1 8 T0 10R0 F 4 1 8 0 101 4 1 8 0 1080 CA 1 8 T0 82R5 F MF4C 1 8 T0 1332 F C4 1 8 T0 5111 F
300. 821 A4R76 0757 0280 3 RESISTOR 1K 1 125W F TC 04 100 24546 4 1 8 70 1001 A4R77 0698 0082 7 RESISTOR 464 1 125W 0 100 24546 4 1 8 0 4640 A4R78 0698 0084 9 RESISTOR 2 15 1 125W 20 100 24546 C4 1 8 T0 2151 F AAR70 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F A4R8C 0698 3432 7 5 RESISTOR 28 1 1 125W 04 100 03888 PMESS 1 8 T0 26R1 F AARB1 0698 3432 7 RESISTOR 26 1 1 125W TC 0 100 03888 55 1 8 0 26 1 A4R82 0698 3160 8 RESISTOR 31 6K 1 125W TC 04 100 24546 4 1 8 0 3162 AAR83 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 C4 1 8 T0 2151 F A4R84 07570442 9 RESISTOR 10K 1 125W TC 04 100 24546 C4 1 8 T0 1002 F AARB85 2100 3352 7 2 RESISTOR TRMR 1K 1096 C SIDE ADJ 1 TRN 28480 2100 3352 AARB6 0696 3454 3 5 RESISTOR 215K 1 125W 0 100 24546 4 1 8 0 2153 4887 0698 0083 8 15 RESISTOR 1 96K 1 125W TC 0 100 24546 C4 1 8 TO 1961 F 4988 0757 0465 6 RESISTOR 100K 1 125W TC 2 0 100 24546 4 1 8 0 1003 4889 0757 0279 0 RESISTOR 3 16K 1 125W TC 0 100 24546 4 1 8 10 3161 A4R90 0757 0280 3 RESISTOR 1K 1 125W 0 100 24546 4 1 8 0 1001 AAR91 0698 0082 7 RESISTOR 464 196 125W TC 0 100 24546 C4 1 8 T0 4640 F A4R92 0757 0279 0 RESISTOR 3 16K 1 125W F TC 0 100 24546 C4 1 8 0 3161 F 4993 0698 8549 7 3 RESISTOR 2 1K 5 1W TC 04 5 28480 0698 8549 4 94
301. 84 9 RESISTOR 2 15K 1 125W 0 100 24546 CA 1 8 TO 2151 F 7198 0698 0082 7 RESISTOR 464 1 125W TC 0 100 24546 C4 1 8 TO 4640 F A71R9 0757 0274 5 RESISTOR 1 21K 196 125W TC 0 100 24546 C4 1 8 TO 121 1 F A71R30 0698 3441 8 RESISTOR 215 1 125W 0 100 24546 C4 1 8 T0 215R F A71R11 0699 0678 9 RESISTOR 900 014 1W TC 0 5 28480 0699 0678 A71R12 0699 0681 4 RESISTOR 100 01 0 5 28480 0699 0687 A71R13 0698 3441 8 RESISTOR 215 1 125W 0 100 24546 C4 1 8 T0 215R F A71R14 0698 3441 8 RESISTOR 215 1 125W TC 04 100 24546 C4 1 8 T0 215R F A71R15 07570274 5 RESISTOR 1 21K 1 125W 0 4 100 24546 1 8 1211 71 16 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F 71 17 0698 0084 9 RESISTOR 2 15K 1 125W 0 100 24546 4 1 8 0 2151 A71R18 0698 0082 7 RESISTOR 464 1 125W TC 0 100 24546 C4 1 8 T04640 F A71R19 0757 0274 5 RESISTOR 1 21K 1 125W TC 204 100 24546 4 1 8 1211 A71R20 0698 3441 8 RESISTOR 215 1 125W 0 100 24546 C4 1 8 T0 215R F A71R21 0699 0678 9 RESISTOR 900 01 IWF TC 0 5 28480 0699 0678 A71R22 0699 0681 4 RESISTOR 100 0196 tW TC 2 04 5 28480 0699 0681 A71R23 0757 0274 5 RESISTOR 1 21K 1 125W TC 04 100 24546 C4 1 8 TO 1211 F A71R24 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215RF A71R25 0757 0279 0 1 RESISTOR 3 16K 1 125W TC 0 1
302. 8480 28480 28480 28480 28480 28480 28480 28480 28480 28480 24546 24546 20940 02111 28480 Replaceable Parts Mfr Part Number 08901 60227 08901 00194 0160 3879 0160 3036 2190 0009 2580 0002 0160 3036 2190 0009 2580 0002 0160 3879 0160 3879 0160 2027 0460 3070 1500475 903582 0160 2255 4330 0145 0160 3878 0160 0179 0160 3879 0160 4006 0160 4007 1901 0518 1901 0538 0122 0239 1250 1220 2190 0124 2950 0078 08901 80043 9140 0144 08901 20044 08901 20232 1854 0247 1200 0173 1854 0071 4 1 8 0 1002 C4 1 5 TO 1471 F 140 1 22 1002 43 102 0811 338 6 130 livn Replaceable Parts Reference HP Part Designation Number A32R6 0757 0440 2 7 0598 7284 A32R8 0757 0465 2 9 0698 7284 A32R10 0757 0280 A32R11 0757 0280 2 12 07570442 A32R13 0757 0438 A32H14 0757 0398 A32R15 0757 0317 A32R16 0698 8581 A32U1 1826 0013 A32U2 1820 0223 A32NR1 1902 0680 A32VR2 1902 0956 wn C OG Qty Table 6 3 Replaceable Parts Description RESISTOR 7 5K 1 125W TC 0 100 RESISTOR 100K 1 OSW 0 100 RESISTOR 100K 1 125W TC O 100 RESISTOR 100K 1 05W F TC 0 100 RESISTOR 1K 1 125W F TC 0 100 RESISTOR 1K 1 125W TC 0 4 100 RESISTOR 10K 1 125W TC 04 100 RESISTOR 5 11K 1 125W TC 0 100 RESISTOR 75 1 125W TC 0
303. 8480 2190 0018 3030 0139 4 2 SCREW SKT HD 6 32 375 IN LG SST 00000 ORDER BY DESCRIPTION 08662 20028 6 HOLE PLUG 28480 08662 20028 2619A AND ABOVE M P52 08901 00172 9 1 DUCT SUPPORT 28480 08901 00172 2190 0018 5 2 WASHER LK HLCL 6 141 IN ID 28480 2190 0018 3030 0139 4 2 SCREW SKT 6 32 375 IN LG SST 00000 ORDER BY DESCRIPTION 08662 20028 6 HOLE PLUG 28480 08662 20028 MP53 08901 00089 7 1 28480 08901 00089 MP54 08901 20231 3 1 CENTER STAUT BRACE 28480 08901 20231 2314A 2608 MP55 08901 00077 3 1 SUPPORT BRACKET AND BOTTOM 28480 08901 00077 2619 AND ABOVE MP55 08901 00170 7 1 SUPPORT BRACKET AND BOTTOM 28480 08901 00170 56 7120 1254 1 1 NAMEPLATE 3124N WD 54 IN LG AL 28480 7120 1254 LOGO 57 7120 1927 5 1 LABEL BLANK 625 IN WD 1 5 IN LG AL 28480 7120 1927 HP HEWLETT PACKARD MADE IN USA MP58 NOT ASSIGNED 59 7120 4296 7 1 LABEL WARNING 688 IN WD 1 5 IN LG AL 28480 7120 4296 WARNING HAZARDOUS VOLTAGE 2314A TO 2514A M PGO 7120 5931 5 1 LABEL WARNING 14N WD 7 IN LG PPR 28480 7120 5911 2515 AND ABOVE M P60 7120 8607 2 LABEL THIS INSTRUMENT USES METRIC 28480 7120 8607 ANO ENGLISH HARDWARE CAUTION METRIC THREADED FASTNERS MP61 7120 8053 2 1 LABEL WARNING 15 1 MM WD 45 6 MM LG 28480 7120 8053 NARNING FOR CONTINUED PROTECTION AGAINST FIRE MP62 7120 8138 4 1 LABEL WARNING 6 51 MM LG VINYL 28480 7120 8138 CAUTION REMOVE 4 REAP FEE
304. 854 0247 1200 0173 A51Q8 1854 007 1 A5109 1854 0475 51010 1854 0071 51011 1854 0071 51012 1853 0007 51013 1853 0007 ASIRI 0757 0401 A51 R2 0757 0443 5183 0698 3154 AS1R4 0698 3153 5185 0757 0442 5186 0698 3447 A51R7 0698 6502 A51R8 0698 6502 A51R9 0757 0442 AS51H10 0698 3153 A51R11 0698 8068 re Serien T te 6 138 o ON NN NN fo to NNN Qty Table 6 3 Replaceable Parts Description DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS CORE SHIELDING BEAD CORE SHIELDING BEAD CONNECTOR RF SMC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THO 067 IN THK CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 91UH 5 1660X 385LG INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 390NH 5 105DX 26LG INDUCTOR RF CH MLD 1 8UH 5 1050X 26LG COVER FM CAL SCREW MACH 6 32 25 IN LG PAN HO POZ TRANSISTOR PNP SI TO 18 PD 360MW TRANSISTOR NPN SI PD 300MW FT 200MHZ TRANSISTOR PNP 2 3251 SI 18 PD 360MW TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW TRANSISTOR PNP SI TO 18 PD 360MW TRANSISTOR PNP SI TO 18 PD 360
305. 88 PMES5 1 8 T0 23R7 F 16815 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 C4 1 8 T0 2151 F A16R16 0698 0082 7 5 RESISTOR 464 1 125W 2 0 100 24546 4 1 8 0 4640 A16R17 0698 3443 0 9 RESISTOR 287 1 125W F TC x 0 100 24546 C4 1 8 T0 287A F 16818 0698 3431 6 RESISTOR 23 7 1 125W TC 0 100 03888 PME55 1 8 TO 23R7 F A16R19 0757 0394 0 RESISTOR 51 1 1 125W TC 0 100 24546 C4 1 8 T0 51R1 F 16820 0698 3431 6 RESISTOR 23 7 1 125W TC 0 100 03888 PMESS 1 8 T0 23R7 F to Section 7 update imformiation rev 16JUL90 Factory selected Component Refer to section En 1 5 psit change 6 6 gt 4 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C D Mfr 2 escription Mfr Part Number Designation Number D 17 08901 60145 2 1 INPUT MIXER ASSEMBLY 28480 08901 60145 17 1 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C2 0160 4084 8 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 4084 A17C3 0160 3873 1 4 CAPACITOR FXD 4 7PF 5PF 200VDC CER 28480 0160 3873 17 4 0160 3879 7 01UF 20 100VDC CER 28480 0160 3879 A17C5 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C6 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A17C7 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 17 8 0180 0197 8 CAPACITOR
306. 9 1W 800 2 28480 1854 0247 12000173 5 INSULATOR XSTR DAP GL 28480 12000173 2303 1854 0023 9 TRANSISTOR NPN 1 18 PD 360MW 28480 1854 0023 A2304 1853 0007 7 TRANSISTOR PNP 2N3251 SI 18 360MW 04713 2N3251 2305 1854 0210 6 TRANSISTOR NPN 2N2222 Si TO 18 PD SOOMW 04713 2N2222 2306 1853 0281 9 TRANSISTOR 2 2907 SI 18 400MW 04713 2 2907 1205 0037 0 1 HEAT SINK TO 18 CS 28480 1205 0037 2307 1853 0038 4 1 TRANSISTOR PNP 39 PD iW FT 100MHZ 28480 18530038 1200 0173 5 INSULATOR XSTR DAP GL 28480 1200 0173 2308 1853 0020 4 TRANSISTOR PNP SI PD 300MW FT 150MHZ 28480 1853 0020 2309 1855 0049 1 TRANSISTOR JFET DUAL N CHAN D MODE 1 28480 1855 0049 A23Q10 1853 0020 4 TRANSISTOR PNP 1 PD 300MW 150MHZ 28480 1853 0020 A23Q11 1855 0420 2 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 2N4391 23012 1855 0420 2 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 2N4391 AZ3R1 0757 0288 1 RESISTOR 9 09K 1 125W TC 0 100 19701 4 1 8 0 9091 A23R2 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 51 IRF A23R3 0698 3154 0 RESISTOR 4 22K 1 125W TC amp 0 100 24546 4 1 8 0 4221 23 4 0757 1094 9 RESISTOR 1 47K 1 125W TC 0 100 24546 CA 1 6 TO 1471 F 2395 0757 0405 4 RESISTOR 162 1 125W TC O 100 24546 C4 1 8 T0 162R F A23R6 0757 0421 4 RESISTOR 825 1 125W F TC 0 100 24546 C4A 1 8 TO B2 5R F A23R7 0757 0442 9 RESISTOR 10
307. 9 0757 0280 3 RESISTOR 1K 1 125W TC 04 100 24546 C4 1 8 T0 1001 F A23R40 0698 3162 9 RESISTOR 46 4K 1 125W 0 100 24546 C4 1 8 T0 4642 F A23R41 0757 1094 9 RESISTOR 1 47K 196 125W TC 0 100 24546 C4 1 8 TO 1471 F A23R42 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 C4 1 8 TO 10 1 F A23R43 07570420 3 RESISTOR 750 1 125W 0 100 24546 4 1 8 0 751 A23R44 07570394 0 RESISTOR 51 1 1 125W 0 100 24546 C4 1 8 TO 51R1 F A23RA5 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A23R46 0698 3260 9 RESISTOR 464K 1 125W TC 0 100 28480 0698 3260 A23R47 0698 3260 9 RESISTOR 464K 1 125W TC 0 100 28480 0698 3260 2 48 0757 0274 5 RESISTOR 1 21K 1 125W TC 0 100 24546 4 1 8 1211 A23R49 0698 3260 9 RESISTOR 464K 1 125W TC O 100 28480 0698 3260 A23R50 0757 0394 0 RESISTOR 51 1 1 125W 0 100 24546 4 1 8 0 51 1 A23R51 0757 0274 5 RESISTOR 1 21K 1 125W TC 0 100 24546 C4 1 8 TO 1211 F A23R52 07570421 4 RESISTOR 825 1 125W TC 0 100 24546 C4 118 T0825R F A23R53 07570279 0 RESISTOR 3 16 1 3125W TC 0 100 24546 C4 1 8 T0 3161 F A23R54 2100 2521 0 RESISTOR TRMR 2K 10 SIDE ADJ 1 TRN 30983 ET50X202 A23R55 07570278 9 48 RESISTOR 1 78K 1 125W TC 0 100 28480 07570278 A23R56 07570442 9 RESISTOR 10K 1 125W F TC 20 100 24546 4 1 8 0 1002 A23R57 0757 0394 0 RESISTOR 5
308. 901 0880 2 0122 0173 8 DIODE VVC 29PF 7 BVR 30 28480 0122 0173 2 0122 0173 8 DIODE VVC 29PF 7 BVR 30 28480 0122 0173 7 galerinating baetiory celecred Refer tee teen part cleange 6 111 Replaceable Parts Reference HP Part Qty Designation Number D A24CR5 1901 0880 7 2 6 1901 0880 A24J1 1250 1425 7 2190 0124 4 2950 0078 9 2412 1250 1425 7 2190 0124 4 2950 0078 9 A24L1 9100 3922 4 2412 9100 3922 4 A24L3 9100 3922 4 2414 9100 3922 4 A24L5 9100 3922 4 2416 9100 2251 0 2 A24L7 08901 00068 2 1 2418 9100 2251 0 2419 24110 2 1 08901 00023 9 1 A24MP2 5001 0176 0 A24MP3 5001 0176 0 A24MP4 0866200040 0 A24MP5 08662 00038 6 24 08901 00043 3 1 2401 1854 0247 9 0340 0834 0 1 A24Q2 1855 0020 8 2402 1855 0020 8 2404 18530007 7 A24Q5 1853 0007 7 2406 1854 0404 0 A24Q7 1854 0404 0 A24Q8 1853 0007 7 2491 0698 7236 7 A24R2 07570280 3 A24R3 0698 3449 6 2 2484 0757 0199 3 24 5 0757 0416 7 A24R6 07570274 5 A24R7 0698 3157 3 A24R8 0757 0402 1 A24R9 0757 0442 9 A24R10 0698 3155 1 A24R11 0698 3151 7 A24R12 0757 0401 0 0757 0401 9 A24R14 0757 0405 4 A24R15 0698 8827 4 A24R16 section 7 6 112 fer Table 6 3 Replaceable Parts Description DIODE GEN PRP 125
309. 98 4190 6 1 RESISTOR 50 25 125W TC 0 100 03888 PME55 1 8 TO 50R0 C AS5OR67 0698 3488 3 1 RESISTOR 442 1 125W TC 0 100 24546 C4 1 8 T0 422R F ASOR68 0757 0428 1 RESISTOR 1 62K 1 125W TC 0 100 24546 4 1 8 0 1621 ASOR69 0698 6235 4 1 RESISTOR 96 25 5 125W TC O 100 24546 C4 1 8 T0 96R25 D 50870 0757 0439 4 RESISTOR 6 81K 1 125W 20 100 24546 CA4 1 8 T0 68 1 1 F 50 71 0698 7982 0 1 RESISTOR 71 16 1 25W TC 04 50 19701 MF52C1 4 T2 71R16 B ASOR72 07570280 3 RESISTOR 1K 1 125W TC 04 100 24546 C4 1 8 T0 1001 F ASOR73 0757 0419 0 RESISTOR 681 1 125W F TC 0 100 24546 C4 1 8 TO 68 1 R F 50874 0698 3445 2 RESISTOR 348 1 125W 04 100 24546 C4 1 8 T0 348R F ASOR75 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 0 101 A50R76 0757 0416 7 RESISTOR 511 1 125W TC 2 0 10C 24546 4 1 8 0 511 A50R77 0698 7981 9 1 RESISTOR 96 25 1 25W TC 0 50 19701 MF52C1 4 T2 96R25 B ASOR B 0757 0424 7 RESISTOR 1 1K 1 125W TC 0 100 24546 CA 1 8 TO 110 1 F ASOR 79 0698 3442 9 RESISTOR 237 1 125W TC 204 100 24546 C4 1 8 T0 237R F 50 80 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 1 8 0 101 7 feet ngelate ce deeded v oripenent ta section uo DS peut rev 10 01 90 NS SS 5 11 1 Pa NO Xe O Model 8901B Replaceab
310. 990 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 8 SOCKET4C 14 CONT DIP DIP SLOR 28480 1200 0803 A1U5 1390 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 8 14 DIP DIP SLDR 28480 1200 0803 106 1990 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 B 14 CONT DIP DIP SLDR 28480 1200 0803 A1U7 1990 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 8 SOCKET IC 14 DIP DIP SLDR 28480 1200 0803 A1U8 1990 0574 3 DISPLAY NUM SEG 1 43 28480 5082 7651 1200 0803 8 SOCKET IC 14 DIP SLOR 28480 1200 0803 A1U9 1990 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 B SOCKET C 14 CONT DIP DIP SLDR 28480 1200 0803 11 10 1990 0574 3 DISPLAY NUM SEG 1 CHAR 43 H 28480 5082 7651 1200 0803 8 SOCKET IC 14 DIP DIP SLDR 28480 1200 0803 vo Section 7 for update information Factory selectod Component Refer Section 5 A Errata part change rev 16JUL90 6 9 to Section 7 6 10 Replaceable Parts Reference HP Part Designation Number 1011 1990 0574 1200 0803 A1U12 1990 0574 1200 0803 1013 1826 0412 1014 1820 1144 A1U15 1820 2075 A1U16 1820 1729 A1U17 1820 2075 A1UT18 1820 2075 A1U19 1820 1427 1020 1820 1198 1021 1820 1198 1022 1820 1729 1023 1820 1729 1024 1820 1729 1025 1820 1729 1026 1820 1729 1027 1820 1729 1028 1820 1729 1029 1820 1729 1030 18
311. A18C18 A18C19 A18C20 A18C21 A18CR1 A18CR2 A18CR3 A18CR4 18 5 A18CH6 A18CR7 2314A TO 2441A 18 1 2443A AND ABOVE AISEI A18J1 A18J2 A1811 A18L2 A18MP1 to zoerrion 7 rev 16JUL90 HP Part C Qty Number D 08901 50004 2 0180 0094 4 0180 0094 4 0160 3459 9 45 0180 2620 6 14 0180 2619 3 7 0160 0156 7 1 0160 2257 3 1 0140 0198 5 0180 2620 6 0160 2242 6 2 9180 2620 6 0180 2620 6 0160 6623 5 0160 2266 4 1 0160 2199 2 10 0160 2205 1 1 0180 1746 5 0160 2242 6 0180 0197 8 0180 2620 6 0160 2265 3 1 1901 1098 1 1901 1098 1 1901 1098 1 1901 0880 7 1901 0880 7 1901 0518 8 1901 0518 8 9170 0029 3 1250 1205 1 6 1250 1205 1 9100 1628 3 1 91400237 2 1 08901 00029 5 1 2190 0124 4 2950 0078 9 for information Table 6 3 Replaceable Parts Description iF AMPLIFIER ASSEMBLY CAPACITOR FXD 100UF 75 10 25VDC AL CAPACITOR FXD 100UF 75 10 25VDC AL CAPACITOR FXD 0208 20 100VDC CER CAPACITOR FXD 2 2UF 10 SOVDC CAPACITOR FXD 22UF 10 15VDC CAPACITOR FXD 3900PF 10 200VDC POLYE CAPACITOR FXD 10PF 5 500VDC CER 0 60 CAPACITOR FXD 200PF 5 300VDC MICA CAPACITOR FXD 2 2UF 10 SOVDC TA CAPACITOR FXD 2 4PF 25PF 500VDC CER CAPACITOR FXD 2 2UF 10 SOVDC CAPACITOR FXD 2 2UF 10 SOVDC TA CAPACITOR FXD 1UF 20 CER CAPACITOR FXD 24PF 5 500VDC CER 0 4 30 CAPACITOR FXD 30PF 5 300VDC MICA CAPACITOR FXD 120P
312. A20R67 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 4 1 8 0 101 A20R68 0699 0118 2 1 RESISTOR 20K 1 1W TC 04 5 28480 0699 0118 A20R69 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F A20R70 0698 7260 7 RESISTOR 10K 1 05W 0 100 24546 C3 1 8 T0 1002 F A20R71 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 C3 1 8 T0 1001 F A20R72 0698 7257 2 1 RESISTOR 7 5K 1 05W TC 04 100 24546 C3 1 8 T0 7501 F A20R73 0698 7260 7 RESISTOR 10K 1 OSW TC 04 100 24546 C3 1 8 T0 1002 F A20R74 0757 0158 4 1 RESISTOR 619 1 SW 0 100 28480 0757 0158 A20R75 0698 7236 7 RESISTOR 1K 1 OSW TC 0 100 24546 C3 1 8 T0 1001 F A20R76 0698 7260 7 RESISTOR 10K 1 OSW TC 0 100 24546 C3 1 8 T0 1002 F A20R77 0698 7218 5 1 RESISTOR 178 1 OSW TC 0 100 24546 C3 1 8 TO 178R F A20R78 0698 7260 7 RESISTOR 10K 1 05W 0 100 24546 3 1 8 0 1002 A20R79 0698 7236 7 RESISTOR 1K 1 OSW TC 0 100 24546 C3 1 8 T0 1001 F A20R80 0698 7286 7 1 RESISTOR 121K 1 05 0 100 24546 C3 1 8 T0 1213 F A20R81 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 70 1001 A20R82 0757 0279 0 RESISTOR 3 16K 1 125W 0 100 24546 4 1 8 10 3161 A20R83 0698 7258 9 RESISTOR 147K 196 05W TC 0 100 24546 C3 1 8 T0 1473 F A20R84 0698 7262 9 1 RESISTOR 12 1K 1 05W TC 0 100 24546 C3 1 8 T0 1212 F A20R85 0699 0069 2 RESISTOR 2 15M 1 125W
313. A22R36 0757 0346 2 A22R37 0757 0399 5 A22R38 0757 0289 2 A22R39 0757 0438 3 A22T1 08660 50369 0 2 A22T2 08660 60369 0 A22TP1 1251 0600 0 A221P2 1251 0600 0 2314 2551A 22 1 0410 1181 1 1 1200 0758 2 2 A22Y2 0410 1182 e 1 1200 0758 2 2608A AND ABOVE A22Y1 0410 1615 6 1 1400 0973 7 2 A22Y2 0410 1615 6 1 1400 0973 7 2 to section fer update rev 16JUL90 Table 6 3 Replaceable Parts Description RESISTOR 464 1 125W TC 2 04 100 RESISTOR 464 1 125W TC 0 100 RESISTOR 464 1 125W TC 0 100 RESISTOR 200K 196 1W TC 04 15 RESISTOR 200K 196 1W TC 04 15 RESISTOR 348 196 125W F TC 0 100 RESISTOR 75 1 125W TC 0 100 RESISTOR 464 1 125W TC O 100 RESISTOR 464 196 125W TC 0 100 RESISTOR 200K 196 1W 0 15 RESISTOR 200K 196 1W TC 04 15 RESISTOR 90 9 1 125W TC 0 100 RESISTOR 464 1 125W O 100 RESISTOR 21 5 1 125W F TC 04 100 RESISTOR 51 1 196 125W TC 0 100 RESISTOR 38 3 1 125W TC 04 100 RESISTOR 825 1 125W TC 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 14 7K 1 125W TC 0 100 RESISTOR 383 1 125W TC 04 100 RESISTOR 5 11K 196 125W TC 04 100 RESISTOR 121 1 125W TC 2 O 100 RESISTOR 10 1 125W TC 0 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 10 196 125W F TC 0 100 RESISTOR
314. A6 AM Demodulator Assembly in Service Sheet BD3 Special Function 3 controls the IF frequency selection as well as the 5 25 MHz High Pass Filter in the RF Input Assembly The next three paragraphs apply to 2642A and above The IF frequency response for most measurements is determined by the IF filters and the IF amplifiers here and in the 18 IF Amplifier Assembly The 455 kHz Wide Bandpass Filter in the 17 Input Mixer Assembly determines the response of the 455 kHz IF except in the case of the Selective Power measurements The 455 kHz Wide Bandpass Filter is switched in automatically for input signals in the range of 2 5 to 10 MHz In the Selective Power measurement mode the narrower channel filters in the A72 Channel Filter and A71 IF Amplifier Detector Assemblies determine the frequency response When the 455 kHz IF is chosen the 455 KHZ IF annunciator lights Automatic IF filter selection provides the optimum IF frequency and IF filter selection for each measurement mode The frequency response of the IF filter is determined by the RF input blocking capacitors not shown 4 MHz Low Pass Filters 1 and 2 and principally the 2 5 MHz Low Pass Filter in the 6 AM Demodulator Assembly in Service Sheet BD3 Special Function 3 controls the IF frequency selection as well as the 5 25 MHz High Pass Filter in the RF Input Assembly The First and Second IF Amplifiers function as buffers and provide the same IF gain for the assembly as in o
315. ABOVE A3C6 A3C7 9 10 11 12 13 A3C14 A3C15 A3C16 A3C17 18 19 20 21 22 23 242 A3C25 A3C26 A3C27 28 A3C29 A3C30 21 9 32 A3C33 HP Part Number 08901 60009 0180 0058 0180 0058 0180 2929 0160 2858 0160 5340 0160 4613 0160 2858 0160 5240 0160 4613 0160 2055 0160 2055 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 2055 0160 3879 0160 2055 0160 3879 9160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 6606 0160 4317 0140 0213 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0160 3879 0140 0213 604 424 NNN m occ Qty 90 tRefer to Section 7 for update information rev 16JUL90 Table 6 3 Replaceable Parts Description Mfr p Code AUDIO DE EMPHASIS AND OUTPUT ASSEMBLY 28480 CAPACITOR FXD 5OUF 75 10 25VDC AL 56289 CAPACITOR FXD 50UF 75 10 25VDC AL 56289 CAPACITOR FXD 68UF 10 10VDC 28480 039UF 2 200VDC 28480 CAPACITOR FXD 03UF 1 200VDC 28480 CAPACITOR FXD 1UF 1 50VDC POLYSTY 28480 CAPACITOP FXD 039UF 296 200VDC 28480 CAPACITOR FXD 03UF 1 200VDC 28480 1UF 1 50VDC POLYSTY 28480 CAPACITOR FXD 01UF 80 20 100VDC CER 28480 CAPACITOR FXD 010 80 20 100VDC CER 28480 CAPACITOR FXD 01UF 20 100VDC
316. ACITOR FXD 020 20 100VDC CER CAPACITOR FXD 5 300VDC MICA CAPACITOR FXD 5 300VDC MICA CAPACITOR FXD 2 2UF 10 50VDC CAPACITOR FXD 02UF 20 100VDC CER CAPACITOR FXD 2 2UF 10 50VDC TA CAPACITOR FXD 02UF 20 100VDC CER DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V SOMA 750PS 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750 00 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SM SIG SCHOTTKY DIODE SWITCHING 1N4150 50V 200MA 4NS CORE SHIELDING BEAD CORE SHIELDING BEAD CONNECTOR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN IO NUT HEX DBL CHAM 10 32 THD 067 IN THK CONNECTOR AF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLO 910 5 166DX 385LG INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 91UH 5 166DX 385LG INDUCTOR RF CH MLD 120UH 5 166DX 385LG INDUCTOR RF CH MLD 120UH 5 166DX 385LG INDUCTOR RF CH MLD 3 3UH 5 166DX 385LG INDUCTOR RF CH MLD 22UH 10 166DX 385LG COVER AM CAL SCREW MACH 6 32 25 IN LG PAN HD POZI LABEL AM CAL TRANSISTOR NPN SI 625 100MHZ TRANSISTOR NPN 2N5179 SI 72 PD 200MW TRANSISTOR NPN 2 5
317. ACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A54C14 0160 4832 4 CAPACITOR FXD O1UF 10 100VDC CER 28480 0160 4832 54 15 0160 4797 0 CAPACITOR FXD 3 3PF 25 100VDC CER 28480 0160 4797 54 16 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 54 17 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0150 4835 54 18 0160 4832 4 CAPACITOR FXD 010 10 100VDC CER 28480 0160 4832 54 19 0160 4832 4 CAPACITOR FXD 10 100VDC CER 28480 0160 4832 54 20 0160 4797 0 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 A54C21 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 54 22 0160 4525 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 54 23 0160 4832 4 01UF 10 100VDC 28480 0160 4832 54 24 0160 4832 4 CAPACITOR FXD O1UF 10 100VDC CER 28480 0160 4832 54 25 0160 4789 0 1 CAPACITOR FXD 15PF 5 100VDC CER 0 30 28480 0160 4789 54 26 0160 4835 7 CAPACITOR FXD 1UF 10 50VOC CER 28480 0160 4835 54 27 0160 4835 7 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4835 54 28 0160 5550 5 1 CAPACITOR FXD 1UF 4 596 100VDC MET POLYC 28480 0160 5550 54 29 0160 4822 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 54 1 1901 0518 8 6 DIODE SM SIG SCHOTTKY 28480 1901 0518 A54CR2 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 ASACR3 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 ASACRA 1901 0518 8 DIODE SM SIG SCHOTTKY 2848
318. AM depth greater than 99 at normal RF signal levels which cannot be accurately counted during the trough Also note that if tuning adjustments are necessary three times in a row without any intervening measurement then the full auto tuning sequence will be initiated searching the entire spectrum for a signal Error 82 Unable to Make Audio Count The audio count routine utilizes the main Counter in its frequency count sequence The Controller initializes the Counter which then waits for a stop count signal from the Audio Counter If this stop count signal does not occur within 100 ms the audio count routine will time out See Service Sheets 16 and 23 Error 89 Software Error Perform the Read Only Memory Verification See Service Special Function 52 in paragraph 8 7 Error Messages Soo oo ooa i a S 8901 Service 8 9 POWER UP CHECKS When the Modulation Analyzer is first turned on or if 40 0 SPCL is entered the instrument goes through a series of operational checks If a check fails an error code is displayed for two seconds on the four internal TEST LEDs on the A13 Controller Assembly The sequence then continues on to the next check Except for the check of the front panel LED annunciators no indication of the power up sequence or its results is given on the front panel display The principal advantage to using the Power Up Checks is that the keyboard and display need not be operati
319. ANALOG SWITCH 2 SPST 10 METAL 17856 DG200ABA A71U6 gt 1826 1314 4 RMS 14 CERDIP BPLR 28480 1826 1314 7107 1820 1195 7 IC FF TTL LS POS EDGE TRIG COM 01295 SN74LS175N A71U8 1820 1195 7 IC FF TTL LS POS EDGE TRIG 01295 SN74LS175N ge ce diet Doer Eaclory C aiponeut o Peter pe ce tiome brats part ebange 6 159 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Qt D em Mfr escription Mfr Part Number Designation Number D y p Code A72 08902 60108 8 1 IF CHANNEL Fit TER ASSEMBLY OPTION 030 ONLY 28480 08902 60108 DOES NOT INCLUDE FL1 FL2 R5 Re R9 amp R10 72 1 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 150D685X9035B2 A72C2 0180 0116 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 150D685X9035B2 A72C3 0180 2929 8 CAPACITOR FXD 68UF 10 10VDC TA 28480 0180 2929 A72C4 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 72 5 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 72 6 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 72 7 0160 5469 5 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 5469 72 8 0160 4835 7 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4835 A72C9 0160 5469 5 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 5469 A72C10 01604832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A72C11 0160 4835 7 1UF 10 5 C
320. Agilent Technologies Inc www agilent com 24001 E Mission Liberty Lake WA 99019 Agilent Technologies Innovating the HP Way June 8 2000 Dear Customer As of November 1 1999 four of Hewlett Packard s businesses test and measurement semiconductor products health care solutions and chemical analysis became a new company Agilent Technologies Now many of your Hewlett Packard products and services are in the care of Agilent Technologies At Agilent Technologies we are working diligently to make this transition as smooth as possible for you However as a result of this transition the products and related documentation contained in this shipment may be labeled with either the Hewlett Packard name and logo the Agilent Technologies name and logo or a combination of both Information in this package may refer to Hewlett Packard HP but applies to your Agilent Technologies product Hewlett Packard and Agilent branded products with the same model number are interchangeable Whatever logo you see the information products and services come from the same reliable source If you have questions about Agilent Technologies products and services please visit our website at http www agilent com Sincerely Rebranding Team HP 8901B MODULATION ANALYZER Service Manual SERIAL NUMBERS This manual provides complete information for in struments with serial number prefixes 2314A to 2914A and all MAJOR changes that occu
321. CH TTL LS COM CLEAR 8 BIT IC LCH TTL LS COM CLEAR 8 BIT IC TRANSCEIVER TTL LS BUS OCTL WIRE 24AWG BK 300V PVC 7X32 80C CONNECTOR SGL CONT SKT 1 14 MM BSC SZ RESISTOR ZERO OHMS 22 AWG LEAD DIA RESISTOR ZERO OHMS 22 AWG LEAD DIA RESISTOR ZERO OHMS 22 AWG LEAD DIA RESISTOR ZERO OHMS 22 AWG LEAD DIA Factory selected Component Keler 10 section Mfr Code 28480 28480 28480 28480 27014 01295 28480 01295 28480 28480 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 01295 28480 28480 28480 28480 28480 28480 28480 s Model 8901B Mfr Part Number 5082 7651 1200 0803 5082 7651 1200 0803 LM393N SN74LS02N 1820 2075 SN74LS259N 1820 2075 1820 2075 SN74LS156N SN74LS03N SN74LS03N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS258N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS259N SN74LS138N SN74LS138N SN74LS138N SN74LS259N SN74LS259N 1820 2075 81500447 03620227 8159 0005 8159 0005 8159 0005 8159 0005 part change rev 16 JUL90 Se a en Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Qt D int Mfr escription Mfr Part Number Designation Number D y P Code A2 08901 60008 6 1 AUDIO FILTERS ASSEMBLY 28480 08801 60008 2 1 0180 1746 5 35 CAPACITOF FXD 15
322. CITOR FXD 1UF 10 35VDC 56289 1500105 9035 2 13 19 ASSIGNED 13 20 ASSIGNED 13 21 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A13C22 0160 4818 2 1 CAPACITOR FXD 150PF 5 100VDC CER 28480 0160 4818 A13CR1 1901 0159 3 1 DIODE PWR RECT 400V 750MA DO 41 28480 1901 0159 A13CR2 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1 4150 A13CR3 1901 1098 1 DIODE SWITCHING 1 150 50 200MA ANS 9N171 1N4150 A13CRA 1901 0880 7 DIODE GEN PRP 125MA DO 35 28480 1901 0880 A13CRS 1901 0880 7 DIODE GEN PRP 125MA DO 35 28480 1901 0880 A13CR6 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 A13CR7 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1 4150 A13DS1 1990 1110 5 4 LED LAMP LUM INT 1 51MCD IF 20MA MAX 28480 1990 1110 A13DS2 1990 1110 5 LED LAMP LUM INT 1 5MCD IF 20MA MAX 28480 1901 1110 A13DS3 1990 1110 5 LEO LAMP LUM INT 1 5MCD IF 20MA MAX 28480 1990 1110 130 4 1990 1110 5 LED LAMP LUM INT 1 5 IF 20MA MAX 28480 1990 1110 A13L1 NOT ASSIGNED A13MP1 4040 0749 4 2 EXTR PC BD POLYC 062 BD THKNS 284B0 4040 0749 1480 0116 8 4 PIN ROLL 062 IN DIA 25 IN LG STL 28480 1480 0116 13 2 4040 0751 8 1 EXTR PC BD ORN POLYC 062 BD THKNS 28480 40400751 1480 0116 8 PIN ROLL 0624N DIA 25 IN LG STL 28480 1480 0116 A13Q1 1853 0393 4 1 TRANSISTOR PNP SI TO 18 PD SOOMW 28480 1853 0393 1302 1858 0032 6 TRANSISTOR ARRAY 14 PIN PLSTC DIP
323. D 01UF 10 100VDC CER 28480 0160 4832 A13C10 0160 4822 4 CAPACITOR FXD 01UF 10 100VDC 28480 0160 4832 A13C11 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 A13C12 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A13C13 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 1500225 9020 2 A13C14 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A13C15 0160 4832 4 CAPACITOR FXD 010 10 100VDC CER 28480 0160 4832 A13C16 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 13 17 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 13 18 0180 0291 3 CAPACITOR FXD 1UF 10 35VDC TA 56289 150D 105X9035A2 2314A 2627A 13 19 0160 4805 1 3 CAPACITOR FXD 47PF 5 100VDC CER 0 30 28480 0160 4805 A13C20 0160 4805 1 CAPACITOR FXD 47PF 5 100VDC CER 0 30 28480 0160 4805 2635A TO 2718A 13 19 ASSIGNED 13 20 ASSIGNED 13 212 0180 5098 6 CAPACITOR FXD 22UF 10 5 28480 0180 5098 13 22 ASSIGNED A13CR1 1901 0159 3 1 DIODE PWR RECT 400V 750MA DO 41 28480 1901 0159 A13CR2 1901 1098 1 DIODE SWITCHING 1N4150 50 200 4NS 9N171 1N4150 A13CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 98171 1N4150 A13CRA 1901 0376 6 DIODE GEN PRP 35V 5 DO 35 28480 1901 0376 13 5 1901 0376 5 DIODE GEN PRP 35 50 00 35 28480 1901 0376 A13CR6 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N17 1
324. D 15 Service 8D 16 Model 8901B Table 80 38 Power Meter Attenuator Selection Power Meter Range Attenuator 1 dB Attenuator 2 dB 1 most sensitive 0 0 0 20 0 40 40 20 5 least sensitive 40 The amplified ac signal which is proportional to the input power is converted to dc by the Synchronous Detector The Synchronous Detector is a unity gain amplifier which alternates between a non inverting configuration and an inverting configuration at a 220 Hz rate The 220 Hz drive signal is synchronized with the signal that drives the Chopper in the Power Sensor Since the phase shift between the signal from the Power Sensor Chopper and the input of the Synchronous Detector is zero the ac signal is full wave rectified and has a dc component proportional to the output of the RF Power Sensing Element of the Power Sensor After filtering by the Noise Filters the dc voltage representing the recovered power level of the input signal is measured by the Voltmeter The 220 Hz drive signal for the Power Sensor Chopper and for the Synchronous Detector is generated by the 220 Hz Multivibrator The Ground Regulator is a unity gain non inverting amplifier which assures minimum voltage difference between the Sensor Ground and the Power Meter Assembly ground High current flow through the ground return of the interconnecting cable causes the voltage difference especially if the cable is quite long The Zeroing Control Digital t
325. D Qty Description Code Mfr Part Number ASOR31 0698 3438 3 RESISTOR 147 1 125W TC 0 100 24546 C4 1 8 T0 147R F AS5OR32 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F ASOR33 0698 3431 6 RESISTOR 23 7 1 125W TC 0 100 03888 PMES55 1 8 TO 23R7 F ASOR34 0698 3438 3 RESISTOR 147 1 125W TC 0 100 24546 C4 1 8 T0 147R F ASOR35 0698 3444 1 RESISTOR 316 1 125W 0 100 24546 C4 1 8 T0 316R F ASOR36 0698 0085 0 RESISTOR 2 61 196 125W TC 2 0 100 24546 C4 1 8 TO 261 1 F A50R37 0757 0465 6 RESISTOR 100K 1 125W 0 100 24546 4 1 8 10 1003 ASOR38 06980084 9 RESISTOR 2 15 1 125W TC O 100 24546 4 1 8 70 2151 ASOR39 2100 3207 1 RESISTOR TRMR 5K 10 C SIDE ADJ 1 28480 2100 3207 A50f340 07570279 0 RESISTOR 3 16 1 125W F 2 0 100 24546 4 1 8 0 3161 ASORA1 0757 0465 5 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F ASOR42 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 4 1 8 0 101 AS5OR43 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 C4 1 8 T0 101F ASORA4 0757 0421 4 RESISTOR 825 1 125W TC 0 100 24546 C4 118 T0 825R F 50 45 2100 3349 2 2 RESISTOR TRMR 100 10 SIDE ADJ 1 TRN 28480 2109 3349 ASOR46 0698 3442 9 RESISTOR 237 1 125W 0 100 24546 C4 1 8 TO 237 50847 0698 3447 4 RESISTOR 422 1 125W F TC 0 100 24546 C4 1 8 T0 422R F A50R48 0757 0401 0 RESISTOR 100 1 125W
326. DC CER 28480 0160 3878 19 3 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 19 4 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C5 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 6 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C7 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 8 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C9 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C10 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 19 11 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 12 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A19C13 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 14 0160 2879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A19C15 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 16 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 2314 2622 19 17 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 2 84800 160 3878 2622 2806 A19C17 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 19 18 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A19C19 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 A19C20 0160 0572 1 CAPACITOR FXD 2200PF 20 100VDC CER 28480 0160 0572 19 21
327. DE SWITCHING 1N4150 50V 200MA 4NS DIODE VVC 29PF 396 DIODE VVC 29PF 3 DIODE VVC 29PF 10 C3 C25 MIN 5 BVR 30V DIODE VVC 29PF 10 C3 C25 MIN 5 BVR 30V Mfr Code 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 56289 28480 56289 72136 28480 56289 28480 74970 28480 28480 28480 28480 28480 9 171 9 171 28480 25088 9 171 28480 28480 25088 25088 Eae e th settee tere tele de tee s Replaceable Parts Mfr Part Number 08901 60013 0160 3459 0160 3459 0160 3459 0160 3459 150D606X9006B2 0160 2199 0160 3459 0160 3459 0160 2399 0160 2207 0160 2199 1500606 9006 2 0160 4040 1500226 9015 2 DM15 620J0300WV1CR 0160 3535 150D225X9020A2 0160 0574 189 0509 125 0160 0574 0160 3459 0160 3459 0160 3459 0160 3459 1 4150 1N4 150 0122 0065 209 1 4150 0122 0065 0122 0065 88209 SELECTED 809 SELECTED gt herota go pes eli inue 6 137 Replaceable Parts Reference HP Part Designation Number AS1CR7 1901 1098 A51CR8 1901 1098 A51E1 9170 0847 51 2 9170 0847 A51J1 1250 1220 2190 0124 2950 0078 A51J2 1250 1220 2190 0124 2950 0078 A51L1 9100 1635 5112 9100 1635 5113 9100 1635 A51L4 9100 1635 5115 9100 1635 5116 9140 0310 5117 91400309 A51MP1 08901 00040 2360 0113 5101 1853 0034 5102 1854 0071 5103 1853 0007 5104 1853 0007 5105 1853 0034 5106 1853 0034 A51Q7 1
328. DER 8Y DESCRIPTION 1853 0034 1854 0071 2 3251 2 3251 1853 0034 1853 0034 1854 0247 1200 0173 1854 0071 1854 0475 1854 0071 1854 0071 243251 243251 4 1 8 0 101 4 1 8 0 1102 4 1 8 0 4221 C4 1 8 T0 3833 F C4 1 8 T0 1002 F C4 1 8 T0 422R F 0698 6502 0698 6502 C4 1 8 T0 1002 F C4 1 8 T0 3831 F MF4C1 8 T9 4991 C Errata hange 10 17 90 TO SF SS Se np st es lg Model 8901B Reference HP Part Designation Number A51R12 2100 3349 A51R13 0698 8068 51 14 0698 8024 A51R15 0698 3155 51816 0757 0442 A51R17 0698 3155 A51R18 0757 0442 AS1R19 0757 0464 A51R20 0757 0416 AS1R21 0698 7215 51 22 0698 7839 A51R23 0698 5439 AS51R24 2 0698 3159 51 25 51826 0698 5439 51 827 0698 6502 A51R28 0698 3440 AS1R29 0698 3154 51830 0698 3157 A51R31 0698 0085 A51R32 0757 0288 ASIR33 0757 0447 51 4 0698 3154 A51R35 0757 0401 A51R36 0757 0441 51837 0698 7205 51838 0698 7212 A51R39 0757 0420 A51R60 0698 7212 A51R41 0757 0416 A51R42 0757 0420 A51R43 0698 3132 51 44 0698 7212 51 45 0757 0438 A51 R46 0757 0438 AS1TP1 1251 0600 ASITP2 1251 0600 ASITP3 1251 0600 5101 1826 0059 5102 1826 0059 5103 1826 0059 5104 1826 0371 5105 1820 1963 5106 1826 0138 AS1U7 1820 1216 5108 1820 1411 5109 1220 0723 ASIVRI 1902 3059 ASIVR2 1902 0680 AS51VR3 1902 3104 ASTVRA 1902 3104 18 0 s dear nr eg
329. E ASSEMBLY SEMI RIGID S2 PORT 4 TO REAR PANEL J13 OPTION 030 ONLY OSCILLATOR CRYSTAL OVENIZED 10MHZ 1 WASHER LK HLCL NO 6 141 IN ID SCREW MACH 6 32 625 IN LG PAN HD POZI WASHER FL MTLC NO 6 149 IN ID aeter otniponent 16 Mfr Code 28480 28480 28480 28480 28480 28480 28480 00000 28480 Mfr Part 08901 60255 08901 50248 08901 20249 08902 60036 08902 60037 0960 0529 2190 0006 Model 8901B Number ORDER BY DESCRIPTION 30500227 change rev 16 1190 Model 8901B Replaceable Parts Table 6 4 Code List of Manufacturers ANY SATISFACTORY SUPPLIER SANGAMO ELEC CO S CAROLINA DIV PICKENS SC 29671 ALLEN BRADLEY CO MILWAUKEE WI 53204 TEXAS INSTR INC SEMICOND CMPNT DIV DALLAS TX 75222 SPECTROL ELECTRONICS CORP CITY OF IND CA 91745 FERROXCUBE CORP SAUGERTIES NY 12477 PYROFILM CORP WHIPPANY NJ 07981 CLAIREX CORP MT VERNON NY 10050 MOTOROLA SEMICONDUCTOR PRODUCTS PHOENIX AZ 85008 JEFFERS ELECTRONICS INC NOGALES AZ 85621 PRECISION MONOLITHICS INC SANTA CLARA CA 95050 FAIRCHILD SEMICONDUCTOR DIV MOUNTAIN VIEW CA 94042 TRW INC BURLINGTON DIV BURLINGTON IA 52601 RAYTHEON CO SEMICONDUCTOR DIV HQ MOUNTAIN VIEW CA 94040 CATALYST RESEARCH CORPORATION BALTI
330. E occa ots nanofarad NUPL uos aos nickel plate asses normally open NOM nominal NORM norma NPN negative positive negative NPO negative positive 6 4 zero zero tempera ture coefficient NRFR not recommended for field replacement 5 55443 not separately replaceable NS nanosecond nW nanowatt OBD order by description Table 6 2 Abbreviations 2 of 2 OD voten outside diameter 22 55 222 peak working oval head voltage OP AMPL operational visa aos resistance amplifier capacitance option rectifier OSG oscillator REF ted eae reference OX ease oxide REG regulated DE ias ua acc dio Rea ounce REPL replaceable sauces ohm radio frequency E peak used in parts radio frequency list interference Pulse amplitude RH round head right hand modulation resistance printed circuit inductance PCM pulse code modula capacitance tion pulse count RMO rack mount only modulation rms root mean square pulse duration RND round modulation ROM read only memory stents tee aes picofarad R amp P rack and panel PH BRZ phosphor bronze RWV
331. ED COAX CABLE ASSEMBLY 1 A52J2 MODULATION OUT AUDIO IN OPTION 001 ONLY Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 Paetaa eee bec sete Gs 1 Replaceable Parts Mfr Part 08901 60179 08901 60241 08901 F 9 59 08901 60072 1251 3275 1251 3897 1400 0510 08901 60230 1400 1151 08902 60039 7400 1511 08901 60231 1400 1511 08901 60231 1400 1151 08901 60071 1251 3275 1251 3897 08901 60232 1251 3275 1251 3897 08901 60176 1400 0510 8120 1378 08901 60258 x Number pri flange 6 177 Replaceable Parts Reference Designation W54 W55 2314A TO 2636A W56 W57 2642A AND ABOVE W56 W57 Y tiefe re ce tianu 7 HP Part Number D 08901 60255 5 08901 20248 2 08901 20249 3 08902 60036 1 08902 60037 2 0960 0529 4 2190 0006 1 2360 0203 1 3050 0227 3 foi infetteatiet Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS NOT ASSIGNED WIRING HARNESS 55 55 TO 52 BRN RED ORN OPTION 030 ONLY CABLE ASSEMBLY SEMI RIGID REAR PANEL J14 TO S2 PORT 3 OPTION 030 ONLY CABLE ASSEMBLY SEMI HIGID S2 PORT 4 TO REAR PANEL J13 OPTION 030 ONLY CABLE ASSEMBLY SEMI RIGID REAR PANEL J14 TO S2 PORT 3 OPTION 030 ONLY CABL
332. ED RESISTOR 4 64M 1 125W TC 0 100 RESISTOR TRMR 50K 1096 C SIDE ADJ 17 TRN RESISTOR 1 96K 1 125W TC 0 100 RESISTOR 2 15K 1 125W TC 04 100 RESISTOR 61 1 1 25W TC 204 100 NOT ASSIGNED RESISTOR 1 78K 1 05W TC 0 100 RESISTOR 237 1 125W TC 04 100 RESISTOR 75 1 05W TC 0 100 RESISTOR 464 1 125W TC 0 100 RESISTOR 464 1 125W TC 0 100 RESISTOR 464 1 125W TC 04 100 RESISTOR 464 196 125W TC 0 100 RESISTOR 511 1 125W TC 0 100 RESISTOR 215K 196 125W TC 0 100 RESISTOR 464 1 125W F TC 0 100 RESISTOR 100K 1 125W F TC 0 100 RESISTOR 3 16K 1 125W F TC 0 100 RESISTOR 1 62K 1 125W TC 0 100 RESISTOR 10K 1 125W TC 204 100 RESISTOR 422K 1 125W TC O 100 RESISTOR 10K 1 125W TC 40 100 RESISTOR 100 1 05W TC 04 100 NOT ASSIGNED Mfr Code 28480 24546 28480 28480 02111 24546 24546 28480 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 24546 24546 Tractors aele Component 16 section 57 Model 8901B Mfr Part Number 0699 0133 4 1 8 0 2373 9699 0132 0699 0071 43P503 C4 1 8 TO 1961 F C4 1 8 T0 2151 F 0699 0133 C3 1 8 T0 1781 F C4 1 8 T0 237R F C3 1 8 TO 75R0 F C4 1 8 T0 4640 F C4 1 8 TO 4640 F 4 1 8 0 4640 C4 1 8 T0 4640 F C4 1 8 T0 511R F C
333. ED NOT ASSIGNED NOT ASSIGNED RESISTOR 1K 1 05W TC 0 100 RESISTOR 46 4K 1 125W TC 100 RESISTOR 21 5K 1 125W TC 2 0 100 RESISTOR 1K 1 OSW TC 0 100 RESISTOR 9 09K 1 05W TC 04 100 RESISTOR 1K 1 05W TC 20 100 NOT ASSIGNED RESISTOR 1K 1 OSW TC 0 100 RESISTOR 178 196 125W TC 04 100 RESISTOR 1K 196 05W F TC 04 100 RESISTOR 464 1 125W TC 0 4 100 RESISTOR 4 22K 1 125W TC 2 0 100 RESISTOR 1K 1 OSW TC 0 100 RESISTOR 1 05W TC 0 100 RESISTOR 121K 1 05W TC 0 100 RESISTOR 2 15M 1 125W F TC 04 100 NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED RESISTOR 3 16K 1 05W TC O 100 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ 52 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC OP AMP GP 8 DIP C PKG MULTIPLXR 8 CHAN ANLG 16 DIP C GATE TTL LS NAND QUAD 2 INP IC OP AMP GP DUAL 8 DIP C PKG IC AMP LOW NOISE DUAL 8 DIP C PKG bartoiy beter gv tec dien Mfr Code 08901 60262 SERIAL PREFIX 2627A AND ABOVE 19701 01121 24546 28480 24546 24546 24546 24546 28480 28480 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 24546 28480 28480 28480 28480 27014 17856 01295 04713 18324 LE 4
334. ER 28480 0160 4235 72 12 0160 4832 4 CAPACITOR FXD 010 10 100VDC CER 28480 0160 4832 72 13 2160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4232 72 14 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 01604535 A72C15 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A72C16 01604797 0 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 72 17 0160 4525 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 A72C18 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 72 19 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A72C20 0160 4835 7 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4835 72 21 0160 4535 4 CAPACITOR FXD 1UF 10 5 CER 28480 0160 4535 A72C22 gt 0160 4535 4 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4535 72 23 0160 4797 0 CAPACITOR FXD 3 3PF 25 100VDC CER 28480 0160 4797 72 24 0160 4797 0 CAPACITOR FXD 3 3PF 25PF 100VDC CER 28480 0160 4797 A72CR1 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 72 2 1991 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9 171 1 4150 A72CR3 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9 171 1 4150 A72CR4 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4 5 9 171 1 4150 A72CR5 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A72CR6 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9 171 1N4150 A72CR7 1901 0518 8 DIODE SM SIG SCHOTTKY 28480 1901 0518 A72DS1 1990 0717 6
335. ER STRUT 28480 08901 00171 0624 0653 3 111 SCREW 440X1 2 TAPTITE T 10 PNTX 28480 0624 0653 2200 0107 6 8 SCREW MACH 4 40 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2360 0116 5 2 SCREW MACH 6 32 312 IN LG 82 DEG 00000 ORDER BY DESCRIPTION 2360 0117 6 14 SCREW MACH 6 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION MP18 5041 8821 2 4 FOOT REAR 28480 5041 8821 0515 1222 4 SCREW MACH M3 5 0 6 8MM LG PAN HD 00000 ORDER BY DESCRIPTION 2314A TO 2909A MPI9 08901 00076 2 1 SUPPORT BRACKET AUD TOP 26480 08901 00076 2350 0115 4 SCREW MACH 6 32 312 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 08662 20028 6 10 HOLE PLUG 28480 08662 20028 2619A AND ABOVE MP19 08901 00169 4 1 SUPPORT BRACKET AUD TOP 28480 08901 00169 2360 0115 4 SCREW MACH 6 32 321 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 08662 20028 6 10 HOLE PLUG 28480 08662 20028 MP20 08901 00009 1 1 POWER SUPPLY SUPPORT BRACKET 28480 08901 00009 2360 0115 4 SCREW MACH 6 32 312 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2360 0117 6 SCREW MACH 6 32 375 IN LG PAN HD POZ 90000 ORDER BY DESCRIPTION MP20 08901 00108 1 1 POWER SUPPLY SUPPORT BRACKET 28480 08901 00108 OPT 002 ONLY 2360 0115 4 SCREW MACH 6 32 312 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 2360 0117 6 SCREW MACH 6 32 375 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION section T lor update Seles tel 16 mes bon Sa aratro patto 6 169 a
336. ESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F A17R38 0757 0403 2 RESISTOR 121 1 125W TC 0 100 24546 C4 1 8 T0 121R F A17R39 0757 0401 0 RESISTOR 100 1 125W 0 100 24546 4 1 8 70 101 A17R40 0757 0403 2 RESISTOR 121 1 125W 0 100 24546 C4 1 8 T0 121R F 17 41 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A17R42 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 T0 101 F 17 1 08901 80031 7 1 TRANSFORMER ENCP 28480 08901 80031 A17U1 08901 67001 3 1 MIXER CIRCUIT 28480 08901 67001 0340 0850 0 2 INSULATOR XSTR TFE 28480 0340 0850 1251 1556 7 24 CONNECTOR SGL CONT 5 0184 5 52 28480 1251 1556 A17U2 1826 0412 1 IC COMPARATOR PRCN DUAL 8 DIP P PKG 27014 LM393N certian T for infor actos selected sCommponent Feler ta Section 5i A Errata part change rev 16JUL90 6 71 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part D inti Mfr escription Mfr Part Number Designation Number y p Code A17 08902 60104 SERIAL PREFIX 2642A AND ABOVE A17 08902 60104 4 1 INPUT MIXER ASSEMBLY 28480 08902 60104 17 1 0160 3879 7 8 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3579 A17C2 0160 3879 7 CAPACITOR FXD 01UF 20 100VOC CER 28480 0160 3879 A17C3 0160 3873 1 1 CAPACITOR FXD 4 7PF 5 200VDC CER 28480 0160 3873 17 4 0160 3879 7 CAPACITOR FXD 01UF 4 20 100VDC
337. ESISTOR 10K 1 125W TC 2 04 100 24546 C4 1 8 T0 1002 F A13R21 0757 0459 8 RESISTOR 56 2K 1 125W TC 0 100 24546 4 1 8 79 5622 A13R22 0757 0441 RESISTOR 8 25K 1 125W 0 100 24546 C4 1 8 T0 8251 F A13R23 0757 0439 4 RESISTOR 6 81K 19 125W 0 100 24546 4 1 8 70 6811 A13R24 0698 3162 0 RESISTOR 46 4K 1 125W TC 0 100 24546 C4 1 8 T0 4642 F 13 25 0698 3161 9 RESISTOR 38 3K 1 125W TC 0 100 24546 4 1 8 70 3832 13826 0757 0447 4 RESISTOR 16 2K 1 125W 0 100 24546 C4 1 8 T0 1622 F 13 27 0757 9442 9 RESISTOR 10K 1 125W TC 20 100 24546 4 1 8 10 1002 A13R28 0757 0418 9 RESISTOR 619 1 125W TC 0 100 24546 C4 1 8 T0 619R F A13R29 1810 0229 5 NETWORK RES 8 SIP330 0 OHM X 7 01121 208A331 A13R30 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F A13R31 NOT ASSIGNED thtefer to Sectran 7 for npefate Tbastess selected Gripormend Section 53 Rebate pai cdaeogc L6SULIO Model 8901B Reference Designation A13 1 1 2 A13TP3 A13TP4 A13TP5 6 A13TP7 A13TPB A13TP9 1 10 1 11 1 3 12 AT13TP13 A13TP14 13 15 1311 1302 1303 2314A 2333A 1304 2334A 2428 41304 2432A 2550 1304 2551A ONLY 1304 2608A 2642A 1304 2644 2702 1304 2718 ONLY 1304 1305
338. ESISTOR 316 1 05W F TC 0 100 NOT ASSIGNED RESISTOR 196 125W F TC 0 100 SWITCH SL 7 1A DIP SLIDE ASSY 1A 50VDC SOCKET4C 14 CONT DIP DIP SLDR CONNECTOR SGL CONT PIN 1 14 MM BSC S2 SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 5 52 SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ IC SER CXMTR RCVR TTL QUAD IC GATE TTL LS NAND QUAD 2 INP IC FF TTL LS D TYPE POS EDGE TRIG IC SCHMITT TRIG TTL LS INV HEX 1 INP IC SER XMTR RCVR TTL QUAD GATE TTL LS QUAD 2 INP IC GATE TTL LS NOR DUAL 5 INP IC COMPTR TTL MAGTD IC COMPTR TTL LS MAGTD 2 8 BIT IC GATE TTL LS NAND QUAD 2 INP IC GATE TTL LS QUAD 2 INP IC DCDR TTL LS 3 TO 8 LINE 3 INP IC BFR TTL NAND QUAD 2 INP IC MICPROC ACCESS NMOS DUAL 8 BIT SOCKET IC 40 CONT DIP DIP SLDR NOT ASSIGNED FF TTL LS D TYPE POS EDGE TRIG IC FF TTL LS D TYPE POS EDGE TRIG PROM PROGRAMMED NOT ASSIGNED IC GATE TTL NAND QUAD 2 INP IC INV TTL LS HEX 14NP iC INV TTL LS HEX IC INV TTL LS HEX DIODE ZNR 12 1V 5 DO 35 PD 4W Mfr Code 24546 28480 24546 24546 24546 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 01295 01295 01295 28480 01295
339. ESISTOR 34 8 1 05W TC 204 100 24546 C3 1 8 TO 34 R8 F A19R20 0757 0280 3 RESISTOR 1 1 125W TC 0 100 24546 C4 1 8 T0 1001 F 2314 TO 2348A A19R21 0698 7205 0 RESISTOR 51 1 1 05W F TC 0 100 24546 C3 1 8 TO 51R 1 F 2406A TO 2619A A19R21 0698 7214 1 RESISTOR 121 1 05W TC 0 100 24546 C3 1 8 TO 121R F 2622A TO 2806A A19R21 0698 7205 0 RESISTOR 51 1 196 05W 0 100 24546 3 1 8 51 1 A Farata pear ehange rev 16JUL90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part nti Mfr Designation Nambe D Qty Description Code Mfr Part Number A19 A19R22 A19R23 19 24 A19R25 A1T9R26 2413A TO 2348A A19R27 2406A TO 2619A A19R27 2622A TO 2806A 19 27 A19R28 A19R29 A19R30 A19R31 A19R32 2314A TO 2619A A19R33 A19R34 2622A TO 2806A A19R33 A19R34 A19R35 A19R36 A19R37 A19R38 A19R39 19 40 AI9R41 19 42 A19R43 19844 19845 A19R46 A19P47 A19R48 A19R49 rev 16 UL90 0757 0440 0757 0289 0757 0442 0698 3158 1810 0203 0698 7209 0698 7205 0698 3132 1810 0203 1810 0203 0698 7205 0698 7260 0698 7260 0698 7209 0698 7209 0757 0420 0757 0420 0698 7195 0757 0276 0698 7236 0698 3151 0757 0276 0698 7229 2100 2413 0757 0416 07570416 0757 0397 07570397 0698 7229 0757 0416 07570346 0757 0416 apetare amp on NNNNS Q gt UO NNOO
340. F 5 300VDC MICA CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 2 4PF 25 500VDC CER CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR FXD 2 2UF 10 50VDC TA CAPACITOR FXD 22PF 5 500VDC CER 0 30 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE GEN PRP 125MA DO 35 DIODE GEN PRP 125MA DO 35 DIODE SM SIG SCHOTTKY DIODE SM SIG SCHOTTKY NOT ASSIGNED CORE SHIELDING BEAD CONNECTOR RF SMC M SGL HOLE RR 50 OHM CONNECTOR RF M SGL HOLE RR 50 OHM INDUCTOR RF CH MLD 43UH 5 166DX 385LG INDUCTOR RF CH MLD 200UH 5 166DX 385LG COVER IF AMPLIFIER WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK Factory Selected Cotupoment section 2 Mfr Code 28480 56289 56289 28480 25088 25088 28480 28480 72136 25088 28480 25088 25088 28480 28480 28480 28480 56289 28480 56289 25088 28480 9 171 9 171 9 171 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 4 Replaceable Parts Mfr Part Number 08901 60004 3001076025002 3001076025002 0160 3459 D2R2GS 1 BSOK D22GS 1B 15K 0160 0156 0160 2257 DM15F201J0300WV1CR O2R2GS 1850K 0160 2242 O2R2GS1B850K D2R2GS1B50K 0160 6623 0160 2266 0160 2199 0160 2205 1500156 902082 0160 2242 150D225X9020A2 D2R2GS 1850K 0160 2265 1N4150 1N4150 1N4150 1901 0880 1901 0880
341. F C4 1 8 T0 215R F C4 1 8 T0 511R F C4 1 8 T0 511H F 1 8 68 C3 1 8 TO 75R F C3 1 8 TO 51R1 F A vet hange rev 16 UL90 Model 8901B Reference Designation A19 2314A TO 2619A HP Part Number D Qty Table 6 3 Replaceable Parts Description Mfr Code Se ee ER Replaceable Parts Mfr Part Number 08901 60024 08901 60274 SERIAL PREFIX 2314A 2806 AI9R87 0698 7209 4 RESISTOR 75 1 OSW TC 0 100 24546 1 8 75 0 2622 2806 19 87 0698 7205 0 RESISTOR 51 1 1 OSW TC 20 100 24546 C3 1 8 TO 51R1 F 19 88 0698 7236 7 RESISTOR 1K 1 OSW F 0 100 24546 C3 1 8 T0 1001 F A19R89 0757 0280 3 RESISTOR 1K 1 125W TC 20 100 24546 1 8 10 1001 A19R90 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 C3 1 8 T0 1001 F A19R91 0698 7247 0 2 RESISTOR 2 87 1 OSW TC 0 100 24546 C3 1 8 T0 287 1 A19R92 0698 3151 7 RESISTOR 2 87K 1 125W TC 0 100 24546 C4 1 8 TO0 287 1 F A19R93 0698 7247 0 RESISTOR 2 87K 1 OSW TC 0 100 24546 C3 1 8 T0 2871 F A19RS4 0698 7208 3 1 RESISTOR 68 1 1 05W TC 0 100 24546 C3 1 8 TO 68R1 F A19R95 0698 7229 8 RESISTOR 511 1 05W TC O0 100 24546 C3 1 8 TO 511R F A19R96 0757 0397 3 RESISTOR 68 1 196 125W TC 0 100 24546 C4 1 8 TO 68R1 F A19n97 0757 0416 7 RESISTOR 511 1 125W TC 2 04 100 24546 CA4 1 8 TO 51 1R F A19R98 0698 7229 8 RES
342. F has been detected If faulty see Service Sheet 9 and check the IF Present Detector Service Sheet BD3 8D 29 Service Model 8901B NOTE To repeat steps 5 through 7 it is necessary to press CLEAR first to clear the IF Present Latch AM Demodulator Check NOTE This check assumes that the 1 IF FM Buffer Check gives positive results Set the signal generator to 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 20 MHz Press AM Key in 49 S Shift 1 SPCL This causes the average IF level which the ALC loop is supposed to hold constant to be displayed The display should read between 2 096 and 2 104 If only slightly out of limits perform the Adjustment 8 ALC Reference in Section 5 otherwise see Service Sheet 8 Connect a high impedance ac coupled oscilloscope to rear panel AM OUTPUT Modulate the signal generator with 50 AM at a 400 Hz rate The oscilloscope should show the demodulated AM with an ac amplitude of 750 to 850 mVpp If faulty see Service Sheet 8 Key in 6 1 SPCL to set the ALC response time to fast The amplitude should drop between 40 and 120 mVpp If faulty see Service Sheet 8 and check the Bandwidth Control and Level Comparison Amplifier FM Demodulator Check 8D 30 NOTE This check assumes that the FM IF Buffer Check gives positive results
343. FXD 022UF 10 100VDC CER NOT ASSIGNED CAPACITOR FXD 2 2UF 10 20VDC TA NOT ASSIGNED NOT ASSIGNED CAPACITOR FXD 01UF 10 100VDC CER CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 220 5 100 CER CAPACITOR FXD 01UF 10 100VDC CER CAPACITOR FXD 1000PF 5 100VDC CER CAPACITOR FXD 1000PF 4 596 100VDC CER CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 022UF 10 100VDC CER CAPACITOR FXD 022UF 10 100VDC CER CAPACITOR FXD 220 5 100VDC CER CAPACITOR FXD 2 2UF 10 20VDC CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 01UF 10 100VDC CER NOT ASSIGNED NOT ASSIGNED CAPACITOR FXD 33PF 5 100VDC CER 0 30 CAPACITOR FXD 1UF 10 50VDC CER CAPACITOR FXD 4UF 10 50VDC MET POLYC CAPACITOR FXD 2 2UF 10 20VDC TA NOT ASSIGNED CAPACITOR FXD 2 2UF 10 20VDC NOT ASSIGNED CAPACITOR FXD 22UF 10 15VDC CAPACITOR FXD 22UF 5 100 0 CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 2 2UF 10 20VDC CAPACITOR FXD 820PF 5 100VDC MICA CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 5 100VDC CER 0 30 CAPACITOR FXD 290PF 1 300VDC MICA Mfr Code 28480 56289 56289 28480 28480 28480 28480 28480 52763 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 56289 56289 28480 28480 28480 28480 56289 56289 56289 28480 56289 56289 28480 56289 28480 28480 g
344. Figures 8D 1 through 8D 4 N 0 Performs all tests in the group listed for N 1 through N 5 below Displays the number of the first test that failed If no test fails 0 is displayed Special Functions Model 8901B Service NOTE If the display is not zero it is important that all other tests be checked N 1 through N 5 Some LO faults cause more than one test to fail For example if the HF VCO 8 output fails the following tests will fail N 1 Test 4 N 2 Tests 5 6 and 7 N 8 Tests 9 10 N 4 Tests 17 and 18 This is because a frequency measurement of the LO 15 made in these particular tests If the 40V Supply fails the following tests will fail N 2 Tests 5 and 6 N 8 Tests 9 and 10 N 4 Tests 17 and 18 Begin troubleshooting at the lowest numbered test This test is run automatically at power up Results are not displayed but a pass fail indication is made on internal LEDs See Power up Check paragraph 8 9 Counter Tests N 1 N 1 N 1 Test 1 Undefined Test 2 Time Base Test See Service Sheets 22 and 23 Tests the 6 25 kHz TTL time base signal to determine if it toggles within a reasonable length of time The Controller looks at A11U15D s output for 260 At least one transition high to low or low to high of the clock should occur during this time If no clock transition occurs 2 will be displayed in digit position 3 However if a transition is detecte
345. G 17856 DG20 18K A20U15 1820 1195 7 IC FF TTL LS D TYPE POS EDGE TRIG COM 01295 SN74LS175N A20U16 1820 1411 0 7 IC LCH TTL LS D TYPE 4 BIT 01295 SN74LS75N A20U17 1820 1411 0 IC LCH TTL LS 4 01295 SN74LS75N A20U18 1820 1411 0 IC LCH TTL LS D TYPE 4 BIT 01295 SN74LS75N A20U19 1820 1411 0 IC LCH TTL LS D TYPE 4 01295 SN74LS75N A20U20 1820 1411 9 IC LCH TTL LS D TYPE 4 BIT 01295 SN74LS75N A20U21 1820 1411 0 LCH TTL LS 4 BIT 01295 SN74LS75N A20U22 1820 1411 0 IC TTL LS D TYPE 4 01295 SN74LS75N A20U23 1826 0606 5 SWITCH ANLG QUAD 16 DIP C PKG 17856 DG201BK A20VR1 1902 0955 9 1 DIODE ZNR 7 5V 5 00 35 PD 4W 062 28480 1902 0955 A20W1 8159 0005 0 1 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28420 8159 0005 se T fer Esport Component change 6 100 rec 16SUL9IO I Oe Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q n Mfr ty Description 5 Mfr Part Number Designation Number D y Code 21 98901 60025 7 1 LOW FREQUENCY VCXO FILTER ASSEMBLY 28480 08901 60025 21 1 0160 2028 6 3 CAPACITOR FXD 2700PF 5 500VDC MICA 28480 0160 2028 21 2 0160 2534 9 2 CAPACITOR FXD 300PF 1 300VOC MICA 28480 0160 2534 A21C3 0160 2028 6 CAPACITOR FXD 2700PF 5 500VDC MICA 28480 0160 2028 21 4 0160 2028 6 CAPACITOR FXD 2700PF 5 50
346. G SCHOTTKY DIODE SM SIG SCHOTTKY Mfr Code 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 56289 56289 56289 28480 28480 28480 28480 52763 28480 28480 28480 28480 28480 28480 28480 56289 28480 20932 28480 72136 28480 72136 28480 28480 28480 28480 28480 28480 28480 Factory Selected Component Refer to Section 5 Replaceable Parts Mfr Part Number 08901 60093 08901 60018 08901 60107 08901 60106 0160 2055 150D336X9010B2 0160 2055 0160 2055 0160 2055 0160 2055 150D225X9020A2 150D225X9020A2 150D225X9020A2 0160 2055 0160 2055 0160 2055 0160 2055 304324 9 35PF N650 0160 0161 0160 2055 0160 0572 0160 2055 0160 2055 0160 3874 0160 2055 150D225X9020A2 0160 2055 5024EM100RD221M 0160 3879 DM15F201J0300WV1CR 0160 3875 DM15F201J0300WV1CR 0160 0939 0160 2055 1901 0179 1901 0179 1901 0535 1901 0535 1901 0535 A Errata part change 6 45 Replaceable Parts Reference HP Part C Qty Designation Number D A11CR6 1901 0535 9 A11DS1 1990 0647 1 1250 1220 0 2190 0124 4 2950 0078 8 A1 11J2 1250 1220 0 21900124 4 2950 0078 9 At11J3 1250 1220 0 2199 0124 4 2950 0078 9 A11J4 1250 1220 0 21900124 4 2950 0078 9 A11J5 1250 1220 0 2190 0124 4 2950 0078 9 A11J6 1250 1220 0 2190 0124 4 2950 0078 8 A11L1 A11L2 9100 2248 5 ATIMP 1 08901 00033 1 2360 0113 2 11 08901 00083 7 1101 1853 0540 3 1102 1853 0540 3 1103 18
347. HA2 2605 5 A3UA 1826 0753 3 4 IC OP AMP LOW BIAS H IMPD QUAD 14 0 04713 MC34004BL A3US 1826 0371 1 6 OP AMP LOW BIAS H IMPD TO99 PKG 27014 LF256H 06 1826 0059 2 10 IC OP AMP 99 PKG 01295 LM201AL A3U7 1826 0783 9 6 AMP LOW NOISE 8 DIP C PKG 52063 XR5534ACN A3US 1826 0783 9 OP AMP LOW NOISE 8 DIP C PKG 52063 XR553AACN A3US 1826 0753 3 IC OP AMP LOW BIAS H IMPD QUAD 14 DIP C 04713 MC34004BL A3U10 1826 0783 9 IC OP AMP LOW NOISE 8 DIP C PKG 52063 XR5534ACN A3U11 1826 0783 9 IC OP AMP LOW NOISE 8 DIP C PKG 52063 XR5534ACN 2314A TO 2422A A3U12 1826 0582 6 SWITCH ANLG QUAD 16 DIP C PKG 27014 LF132010 013 1826 0582 6 SWITCH ANLG QUAD 16 DIP C PKG 27014 1 132010 14 1826 0582 5 SWITCH ANLG QUAD 16 DIP C PKG 27014 LF13201D 3015 1826 0582 6 SWITCH QUAD 16 DIP C PKG 27014 132010 2426 AND ABOVE A3U 12 1826 0606 5 ANALOG SWITCH 4 SPST 16 CERDIP 17856 DG201BK A3U13 1826 0606 5 ANALOG SWITCH 4 SPST 16 CERDIP 17856 0G201BK A3U 14 1826 0606 5 ANALOG SWITCH 4 SPST 16 CERDIP 17856 DG201BK 3015 1826 0606 5 ANALOG SWITCH 4 SPST 16 CERDIP 17856 DG201BK A3U16 1820 1195 7 11 FF TTL LS D TYPE POS EDGE TRIG COM 01295 SN74LS175N A3U17 1820 1418 7 1 TTL LS BCD TO DEC 4 TO 10 LINE 01295 SINN74LS42N A3U18 1820 1195 7 FF TTL LS B TYPE POS EDGE TRIG COM 01295 SN74LS175N 19 1820 1195 7 IC FF TTL LS D TYPE POS EDGE TRIG 01295 SN74LS175N A3U20 1820 1216 3
348. HP Part Number 0160 4492 0160 3877 0160 4801 0180 2205 0160 6222 0160 4106 0160 4616 1901 0518 1901 0518 1901 0050 1901 0518 1901 0518 1250 1425 2190 0124 2950 0078 1250 1425 2190 0124 2950 0078 0490 1185 0490 1452 0490 1745 0490 1158 0490 1158 0490 1158 0490 1158 9100 2257 9100 2261 9140 0142 9100 2258 9 Qa Wo NOM Qty TRefer to Section 7 for update information rev 01JUL9I Table 6 3 Replaceable Parts Description CAPACITOR FXD 18PF 5 200VDC CER 0 30 CAPACITOR FXD 100PF 20 200VDC CER CAPACITOR FXD 100 5 100VDC CER CAPACITOR FXD 33UF 1096 35VDC CAPACITOR FXD 1UF 20 50VDC CER CAPACITOR FXD 1UF 20 50VDC CER NOT ASSIGNED CAPACITOR FXD 560PF 5 200VDC CEA DIODE SM SIG SCHOTTKY NOT ASSIGNED DIODE SM SIG SCHOTTKY DIODE SWITCHING 80V 200MA 2NS DO 35 NOT ASSIGNED NOT ASSIGNED DIODE SM SIG SCHOTTKY DIODE SM SIG SCHOTTKY CONNECTOR RF SMC M SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK CONNECTOR RF SMC M SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK RELAY REED 1A 500MA 100VDC 5VDC COIL RELAY REED 1 500MA 100VDC 5VDC COIL RELAY REED 1A 500MA 100VDC 5VDC COIL RELAY 2C 5VDC COIL 1A 28VDC RELAY 2C SVDC COIL 1A 28VDC RELAY 2C SVDC COIL 1A 28VDC RELAY 2C 5VDC COIL 1A 28VDC INDUCTOR RF CH
349. Hz SSB Noise At frequencies above 300 MHz a low noise external LO is recommended for best performance The LO is conveniently switched by the LO Input Switch This feature is not allowed in combination with Option 003 rear panel LO connections AM Demodulator The AM Demodulator is an automatic leveling control ALC loop with a relatively slow response time The IF signal is amplified and detected by the AM and IF Average Detector and the dc component of the detected signal is compared to a stable dc reference If the dc voltage is different from the reference the difference is amplified by the ALC Feedback Amplifier which drives the Current Variable Amplifier to force the detected voltage to equal the reference Since the AM on the IF carrier is too fast for the ALC loop to respond to the ALC loop produces an ac voltage in the detector which is proportional to the AM The ALC Bandwidth and Defeat line can be used either to completely defeat the ALC action or to speed up the ALC response time in response to variations in IF level at the sacrifice of accuracy at low AM rates After demodulation the recovered AM is filtered and processed by the Audio Circuits The unfiltered AM from the AM and IF Average Detector containing both ac and dc components is sent to the rear panel AM OUTPUT connector The dc component from the detector is measured by the Voltmeter 1 to determine setting of the RF input attenuators w
350. IF level is then measured with the IF RMS Detector after the IF is bandpass filtered and amplified Next the RF frequency is offset as required by the specific test and the IF level is again measured The ratio of the two IF level measurements is the relative adjacent channel power or single sideband noise Refer to Selective Power Measurements in the Detailed Operating Instructions in Section 3 Two bandpass filters in series define the measurement bandwidth The First Channel Filters are one of two pairs of IF filters The Option Series 030 specifies the pairs of channel filters installed in the instrument The pair of Second Channel Filters have bandwidths of 30 kHz for adjacent channel power measurements or 2 5 kHz for single sideband noise measurements Filter selection is listed in Table 8D 1 The measurement bandwidth indicated in the table is the total bandwidth of the selected filters In addition to determining the total measurement bandwidth the second filter pair remove broadband noise generated by the preceding IF amplifiers The Programmable IF Amplifier governed Service Sheet BD1 Mode 8901B Service by the Controller keeps the IF signal within the linear range of the IF RMS Detector and increase the dynamic measurement range to 95 dB Table 8 1 Option Series 030 Filter Selection Application Spacing Bandwidth Adjacent Channe Power 12 5 kHz Adjacent Channel Power 20 or 25 kHz Adjacent Channel Power 60 k
351. IP SLOR 28480 1200 0541 A13U2 1820 1199 1 IC INV TTL LS HEX 1 INP 01295 SN74LS04N A13U3 1826 0759 9 1 IC COMPARATOR GP QUAD 14 PKG 04713 LM339J 1304 NOT ASSIGNED A13U5 NOT ASSIGNED A13U6 1826 0275 4 1 IC 78L12A V RGLTR TO 92 04713 MC78L12ACP 1307 NOT ASSIGNED A13U8 1820 2027 6 1 1C STATIC MEMORY INTERFACE 28480 1820 2027 12000654 7 2 SOCKET C 40 DIP SLDR 28480 12000654 A13U9 1820 1928 4 1 1C F8 MPU CLK FREQ 2 MHZ 28480 1820 1928 1200 0654 7 2 SOCKET IC 40 DIP SLDR 28480 1200 0654 A13U10 NOT ASSIGNED A13U11 1820 1216 3 TTL LS 3 TO 8 LINE 3 INP 01295 SN74LS138N to 7 for update Component te section 5i gt Errata part enange 6 54 rev 16JUL90 CTT CTT I Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Q D Mfr escription Mfr Part Number Designation Number y P Code 13012 1820 1917 1 BFR TTL LS UNE DRVR 01295 SN74LS240N A13U13 1820 1287 1 IC BFR TTL LS NAND QUAD 2 INP 01295 SN74LS37N 2314A TO 3001A A13U14 08901 80111 1 ROM 1 28480 08901 80111 3005A 3026A 13014 08901 80116 1 ROM 1 28480 08901 80116 3028A TO 3104A AISUI4 08901 80117 1 ROM 1 28480 08901 80117 3104A ONLY A13U14 08901 80121 1 ROM 1 28480 08901 80121 3116A AND ABOVE 413014 08901 80128 1 ROM 1 28480 08901 80128 1200 0567 1 SOCKET IC 28 DIP DIP SLDR 28480 1200 0567 A13U1
352. ISTOR 4 8K 1 1W FTC 0 15 RESISTOR 10K 1 125W TC 0 100 RESISTOR 511 1 125W 8 100 RESISTOR 100 1 125W 0 100 RESISTOR 10K 1 125W F TC 0 100 RESISTOR 4 22K 1 125W F TC 0 100 RESISTOR 261 1 125W TC Q 100 Factory selected Component section Mfr Code 28480 94171 9 171 9 171 28480 28480 28480 28480 28480 28480 9 171 28480 28480 28480 8N171 9N171 28480 284B0 28480 00000 28480 28480 04713 28480 04713 28480 28480 11236 28480 28480 28480 28480 19701 28480 24546 28480 24546 24546 24546 24546 24546 24546 Du Model 8901B Mfr Part Number 1901 0040 1N4 150 1N4150 1N4150 1901 0518 1901 0040 1901 0040 1901 0518 1901 0040 1901 0040 144150 1901 0040 1901 0040 1901 0880 1 4150 1N4150 91400210 08901 00019 2190 0008 ORDER BY DESCRIPTION 1854 0810 1853 0020 2N2222A 1853 0020 2N4393 1853 0020 1854 0810 760 1 RH10K 2100 3358 0698 8549 0699 0074 0699 0073 MF4C1 8 T0 909 1 F 0698 8549 4 1 8 70 1001 0698 8731 4 1 8 0 1002 C4 1 8 T0 511R F C4 1 8 T0 101 F 4 1 8 10 1092 4 1 8 0 4221 4 1 8 0 2610 A Basasa part change rev 16JUL90 rev L6JULIO Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part ot D nfi Mfr escription Mfr Number Designation Number D y Code 2314 2443
353. ISTOR 511 1 05W 0 100 24546 C3 1 8 TO 511R F A 9R99 0698 3438 4 2 RESISTOR 178 195 125W F TC 04 100 24546 1 8 70 178 A19R100 0757 0397 3 RESISTOR 68 1 1 125W F TC 0 100 24546 C4 1 8 TO 68R1 F 19 101 0757 0397 3 RESISTOR 68 1 1 125W TC O 100 24546 4 1 8 9 68 1 A19R102 0698 3439 4 RESISTOR 178 1 125W 0 100 24546 C4 1 8 T0 178R F A19R103 0698 3132 4 RESISTOR 261 1 125W TC 0 100 24546 C4 1 8 T0 2610 F A19R104 0757 0442 9 RESISTOR 10K 1 125W F TC 0 100 24546 4 1 8 0 1002 A19R105 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F 198106 0698 7209 4 RESISTOR 75 1 OSW TC 0 100 24546 C3 1 8 TO 75R0 F A19R107 0757 0397 3 RESISTOR 68 1 1 125W F TC 0 100 24546 C4 1 8 T0 68R1 F A19R108 0698 7209 4 RESISTOR 75 1 05W 0 100 24546 C3 1 8 TO 75R0 F A19R109 0698 7229 8 RESISTOR 511 1 OSW TC O 100 24546 C3 1 8 TO 511R F A19R110 0698 7236 7 RESISTOR 1K 1 OSW TC 0 100 24546 3 1 8 0 1001 2314A 2619A AI19R111 R116 NOT ASSIGNED 2622 TO 2806 19 111 0698 3132 4 RESISTOR 261 1 125W F TC 0 100 24546 C4 1 8 TO 261R F A19R112 0698 7205 0 RESISTOR 51 1 1 15W TC 0 100 24546 C3 1 8 TO 5191 A19R113 0698 3132 4 RESISTOR 261 1 125W TC 20 100 24546 C4 1 8 TO 261F F A19R114 0695 3132 4 RESISTOR 261 1 125W TC O 100 24546 C4 1 8 TO 261R F 198115 0698 3132 4 RESISTOR 26
354. Input Selectors select one of many dc inputs into the converter The output of the selectors is a reference input to a Comparator The Comparator s other input is a linear ramp As the ramp initiated by the Counter rises the Counter counts the time base reference 10 MHz When the ramp voltage equals the level of the Comparator s other input the Comparator signals the Counter to stop counting The accumulated count represents the dc voltage Ground is measured separately and subtracted from the Voltmeter measurement Special Functions 49 and 50 allow direct access and display of the Voltmeter readings Audio Counter Distortion Analyzer A52 80 38 Inputs to the Audio Counter Distortion Analyzer come from either the internal audio circuits via the Output Amplifiers in the A3 Audio De emphasis and Output Assembly or from the external MODULATION OUTPUT AUDIO INPUT as determined by the Internal External Source Switch The distortion plus noise on a 400 Hz or 1 kHz audio signal is measured by comparing the level of the input signal with the level of that same signal which has had the fundamental removed by a notch filter The distortion measurement result which also includes noise is the ratio of the signal with fundamental removed to the unfiltered signal In both measurements the signal level is measured by the RMS to DC Converter which is then read by the Voltmeter The voltage from the RMS to DC Converter can be measured and displaye
355. K 14 125W TC 0 100 24546 C4 1 8 T0 1002 F A23R8 0698 3440 7 RESISTOR 196 1 125W TC 0 100 24546 C4 1 8 TO 196R F A23H9 0757 0346 2 RESISTOR 10 1 125W 04 100 24546 C4 1 8 T0 10R0 F A23R10 0757 0405 4 RESISTOR 162 1 125W TC 0 100 24546 C4 1 8 T0 162R F A23R11 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 70 1001 A23R12 0757 1094 9 RESISTOR 1 47K 196 125W TC 0 100 24546 1 8 0 1471 A23R13 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F A23A14 0698 3136 8 RESISTOR 17 8K 1 125W 0 100 24546 4 1 8 70 1782 A23R15 0698 3154 0 RESISTOR 4 22 1 125W amp 0 100 24546 CA 1 8 TO 4221 F AzaR16 0698 3631 8 1 RESISTOR 330 5 ZW MO TC 0 200 28480 0698 3631 A23R17 0698 3399 5 1 RESISTOR 133 1 5 0 100 28480 0698 3399 A23R18 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A23R19 0757 0394 0 RESISTOR 51 1 196 125W TC 0 100 24546 C4 1 8 T0 51R1 F A23R20 0757 0394 0 RESISTOR 51 1 1 125W TC 0 100 24546 4 1 8 10 51 1 A23R21 0757 0441 8 RESISTOR 8 25 1 125W 0 100 24546 4 1 8 0 8251 A23R22 0698 8827 4 RESISTOR 1M 1 125W 0 10 28480 0698 8827 A23R23 0698 7205 0 RESISTOR 51 1 1 05W TC 0 100 24546 C3 1 8 TO 51R1 F A23R24 0757 0441 8 RESISTOR 8 25K 1 125W F TC 0 100 24546 CA 1 8 T0 8251 F A23R25 0698 8827 4 RESISTOR 1M 1
356. K 196 125W TC 0 100 24546 4 1 8 0 1002 50 98 0698 3491 1 RESISTOR 1K 1 125W TC 0 50 28480 0698 3491 ASOR99 0698 3449 6 RESISTOR 28 7K 1 125W TC 0 4 100 24546 4 1 8 0 2872 ASOR100 0757 0280 3 RESISTOR 1K 196 125W TC 0 100 24546 4 1 8 0 1001 ASOR101 0698 4158 6 1 RESISTOR 100K 136 125W F TC 0 50 28480 0598 4158 50 102 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 C4 1 8 TO 5111 F ASOR103 0757 0280 3 RESISTOR 1K 1 125W F TC 0 100 24546 C4 1 8 T0 1001 F ASOR104 0757 0438 3 RESISTOR 5 11K 1 125W F TC 0 100 24546 4 1 8 0 5111 50 105 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 T0 1001 F 50 106 0757 9280 3 RESISTOR 1K 1 125W TC 04 100 24546 C4 1 8 T0 1001 F 508107 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 ASOR108 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 ASOR109 0698 3441 8 RESISTOR 215 1 125W TC O 100 24546 C4 1 8 T0 215R F 1 1251 9600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 2 1251 0600 9 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 ASOTP3 1251 0600 0 CONNECTOR SGL CONT 1 14 MM BSC SZ SQ 28480 1251 0600 5001 1826 0059 2 OP GP 99 PKG 01295 LM201AL 5002 1826 0059 2 GP 99 PKG 01295 LM201AL A50U3 1826 0059 2 GP 99 PKG 01295 LM201AL 5
357. L90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q ty Description Mfr Part Number Designation Number D y Code A19 08901 60024 08901 60274 SERIAL PREFIX 2314 TO 2806A A19CR1 1901 0033 2 8 DIODE GEN PRP 180 200 00 7 28480 1901 0032 2314A TO 2411A AI9CR2 0122 0072 6 4 DIODE VVC 2 2PF 5 C3 C25 MIN 4 5 04713 BB105B A19CR3 0122 0072 6 DIODE VVC 2 2PF 5 C3 C25 MIN 4 5 04713 881058 A19CR4 0122 0072 6 DIODE VVC 2 2PF 5 C3 C25 MIN 4 5 04713 BB105B AI9CRE 0122 0072 6 DIODE VVC 2 2PF 5 C3 C25 MIN 4 5 04713 8819058 2413A 2806A AI9CR2 0122 0161 4 DIODE VVC 2 15PF 7 BVR 30 25088 BB505B A19CR3 0122 0161 4 DIODE VVC 2 15PF 7 BVR 30 25088 885058 A19CR4 0122 0161 4 DI ODE VVC 2 15PF 7 BVR 30 25088 BB505B 19 5 0122 0161 4 DIODE VVC 2 15PF 7 BVR 30 25088 885058 A19CR6 1901 0033 2 DIODE GEN PRP 180V 200MA 00 7 28480 1901 0033 A19CR7 1901 1097 9 2 DIODE PIN 28480 1901 1097 A19CR8 1901 1097 9 DIODE PIN 28480 1901 1097 A19CR9 1901 0639 4 1 DIODE PIN 28480 5082 3080 A19CR10 1901 0033 2 DIODE GEN PRP 180V 200MA DO 7 28480 1901 0033 19 1 9170 0029 3 5 CORE SHIELDING BEAD 28480 9170 0029 A19E2 9170 0029 3 CORE SHIELDING BEAD 28480 9170 0029 A19J1 1250 1220 0 50 28480 1250 1220 2190 0124 4 WASHER LK INTL 10 195 IN D 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A19J2 1250 1220 0 C
358. LED LAMP LUM INT 800UCD IF 30MA MAX 28480 HLMP 1501 72 1 9170 0847 3 CORE SHIELDING BEAD 02114 56 590 65 3B A72E2 9170 0847 3 CORE SHIELDING BEAD 02114 56 590 65 3B to section 7 for update infiorinatior Phares telocted Component fee tren Gs parre hange rev 6JUL90 6 161 A72FL1 A72FL1 A72FL2 A72FL2 A72FL2 A72J1 A72J2 7233 A72L1 A72L2 7213 A72MP 1 A7201 A72Q2 A7203 A7204 7205 7206 A72Q7 7208 7209 72010 72011 72012 1 6 162 Table 6 3 Replaceable Parts Description Mfr Code Model 8901B Mfr Part Number 08902 60108 SERIAL PREFIX 2642A AND ABOVE Replaceable Parts Reference HP Part Qty Designation Number D 72 A72FL1 08901 80079 3 08901 80080 6 08901 80085 1 08901 80079 3 08901 80080 6 08901 80086 2 1250 1425 2190 0124 2850 0078 1250 1425 2190 0124 2950 0078 t ANOA AN 1251 4700 9 1 9140 0137 1 9140 0137 1 9140 0137 1 08902 00033 4 1855 0421 1855 0420 1854 0668 1854 0668 1853 0430 9170 0847 1854 0345 1853 0459 Q t Oo o 0 1854 0404 1854 0404 1853 0459 1854 0404 1853 0459 for tulotmiation OPTION 030 ONLY FOR INFORMATION ABOUT SELECTING FILTERS FL1 FL2 SEE SERVICE SHEET 33 N
359. LOR KEYCAP MINIATURE L E D Figure 8 1 Front Panel Pushbutton Switch Assembly Switch Replacement The front panel switches have a very high cycle life However if one becomes faulty and needs replacement follow the procedure outlined below 1 Remove the pushbutton key cap You will have to pull hard Use your free hand to hold the board down as you pull 2 Lower the front panel refer to the Front Panel Disassembly Procedure 3 Remove the switch by chipping away the melted plastic tabs at the circuit of the keyboard which hold the switch in place 4 To assure long life and reliable electrical performance the circuit board contact traces which are found underneath the switch should be clean and free of surface imperfections Clean the switch contact pads before installing a new switch Make sure the LEDs are not tilted and that there is no excess solder around the leads 5 For reliable operation any method of assembly must assure that the switch is mounted tightly against the pc board To facilitate the heat staking operation specially molded support anvils HP 5040 6881 can be ordered Disassembly Procedures 8 3 Service Model 8901 NOTE The following operation should be done in a well ventilated area If the heat staking tip is too hot the plastic will vaporize and emit fumes These fumes however are non toxic HEAT STAKING BACK 10 OF CIRCUIT BOARD TOO HOT
360. MLD 820NH 10 105DX 26LG INDUCTOR RF CH MLD 2 7UH 10 105DX 26LG INDUCTOR RF CH MLD 2 2UH 10 105DX 26LG INDUCTOR RF CH MLD 1 2UH 10 105DX 26LG Mfr Code 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 Factory Selected Component Refer to Section 5 Replaceable Parts Mfr Part Number 0160 4492 0160 3877 0160 4801 150D334X9035A2 0160 6222 0160 4106 0160 4616 1901 0518 1901 0518 1901 0050 1901 0518 1901 0518 1250 1425 2190 0124 2950 0078 1250 1425 2190 0124 2950 0078 0490 1185 0490 1452 0490 1745 0490 1158 0490 1158 0490 1158 0490 1158 9100 2257 9100 2261 9140 0142 9100 2258 Errata part change 6 61 a ee a Qty 14 14 10 Replaceable Parts Reference HP Part C Designation Number D A15MP1 08901 00032 0 2360 0113 2 A15MP2 5001 0176 0 A15MP3 5001 0176 0 A15MP4 08901 00054 6 15 5 0363 0158 9 15 6 0363 0159 0 2314A 2414 AISMP7 16 8 2422A AND ABOVE 16 7 0363 0205 7 A15MP8 0363 0205 7 15 9 3050 0023 7 1501 1853 0281 9 A15Q2 1853 0281 9 1503 05 1506 1853 0281 9 1507 1853 0281 9 1508 1853 0281 9 1509 1853 0020 4 15010 1853 0020 4 A15Q11 1854 0071 7 A15R1 0698 7209 4 A15R2 0757 0421 4 A15R3 0695 7195 7 A15RA 0698 7195 7
361. MORE MA 21209 9987 CTS OF BERNE INC BERNE IN 46711 THERMALLOY CO DALLAS TX 75234 CORNING GLASS WKS COMPONENT DIV RALEIGH NC 27604 SILICONIX INC SANTA CLARA CA 95054 SIGNETICS CORP SUNNYVALE CA 94086 VOLTRONICS CORP HANOVER NJ 07936 MEPCO ELECTRA CORP MINERAL WELLS TX 76067 EMCON DIV ITW SAN DIEGO CA 92129 MICRO OHM CORP EL MONTE CA 91731 TRANSITRON ELECTRONIC CORP WAKEFIELD MA 01880 ANALOG DEVICES INC NORWOOD MA 02062 CORNING GLASS WORKS BRADFORD BRADFORD PA 16701 SIEMENS CORP ISELIN NJ 08830 N V PHILIPS ELCOMA DEPARTMENT EINDHOVEN HL 02876 NATIONAL SEMICONDUCTOR CORP SANTA CLARA CA 95051 CORNING GLASS WORKS WILMINGTON WILMINGTON NC 28401 PALO ALTO CA 94304 SOMERVILLE NJ HEWLETT PACKARD CO CORPORATE HQ RCA CORP SOLID STATE DIV MEPCO ELECTRA CORP SAN DIEGO CA 92121 HARRIS SEMICON DIV HARRIS INTERTYPE MELBOURNE FL 32901 CENTRE ENGINEERING INC STATE COLLEGE PA 16801 VILCAN INC INC SAN DIEGO CA 92138 EXAR INTEGRATED SYSTEMS INC SUNNYVALE CA 94086 STETTNER ELECTRONICS INC CHATTANOOGA TN 13035 SPRAGUE ELECTRIC CO NORTH ADAMS MA 01247 ELECTRO MOTIVE CORP FLORENCE SC 06226 ERIE TECHNOLOGICAL PRODUCTS INC ERIE PA 16512 BECKMAN INSTRUMENTS INC HELIPOT DIV FULLERTON CA 92634 JOHNSON 56093 LITTELFUSE INC DES PLAINES IL 60016 MALLORY CAPACITOR CO INDIANAPOLIS IN 46206 rev 1654 ULO9 0 6 179 Replaceable Parts MP 64 BOTTOM COVER INS
362. MPLIFIER OVERPOWER OVERPOWER PROTECT STATUS STATUS INSTRUMENT BUS TO FROM CONTROLLER 81068 I9POIN 99IAISS RF BLOCK IF BLOCK AUDIO BLOCK 8 i HE E EEEEED O m 00 SS et SN lee AF INPUT s 030 4 DEMODULATOR VOLTMETER 260 AUDIO CIRCUITS LOCAL OSCILLATOR ee oe LIM PLIFIER CURRENT VARIABLE AM AND IF AVG LON PASS 40 INPUT tneur Spaz LP IF ampLirier 2 5 MHz LOW AMPLIFIER DETECTOR FILTER re INPUT ATTEN OVEAPOWEA FILTER ATTENUATOA MIXEA IF FILTERS BUFFER PASS FILTER PEAK INPUT RECORDER PROTECTION E lt TRO E DETECTOR SELECTOR OUTPUT 1 K oS eS ND LEVEL OUT icu cS ALC FEEDBACK TO VOLTMETER OR 520 kHz on 300 Hz 3 kHz AND VOLTAGE AF RF PEAK IF BUFFER AMPLIFIER tee LOW Pass AUDIO GAIN HIGH PASS LOW PASS MOD PRES 10 AMPLIFIER DETECTOR LEVEL TO AND AMPLIFICATION louis FILTERS FILTERS FILTEAS NETWORK DISPLAY IM TEIER CONVERTER VOLTMETER SERIAL EEFKES BELOW A ALC ALC EY AVERAG SENSOR MODULE DVERP
363. MW TRANSISTOR NPN TO 39 PD 1W FT 800MHZ INSULATOR XSTR DAP GL TRANSISTOR NPN 1 PD 300MW 200MHZ TRANSISTOR DUAL NPN PD 750MW TRANSISTOR NPN Si PD 300MW 200MHZ TRANSISTOR NPN S 300MW FT 200MHZ TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW RESISTOR 100 1 125W TC 0 100 RESISTOR 11K 1 125W TC 0 4 100 RESISTOR 4 22K 1 125W TC 0 100 RESISTOR 3 83K 1 125W TC 0 100 RESISTOR 10K 1 125W 04 106 RESISTOR 422 1 125W TC 0 100 RESISTOR 3 32 25 125W 0 50 RESISTOR 3 32 2599 125W 0 50 RESISTOR 10K 1 125W s0 100 RESISTOR 3 83K 1 125W TC 0 100 RESISTOR 4 99K 25 125W TC 0 25 eps 4 a Ns 746 te td Mfr Code 9 171 9N171 02114 02114 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 00000 28480 28480 04713 04713 28480 28480 28480 28480 28480 28480 28480 28480 04713 04713 24546 24546 24546 24546 24546 24546 28480 28480 24546 24546 19701 Model 8901B Mfr Part Number 1N4150 1N4 150 56 590 65 3B PARYLENE COATED 56 590 65 3B PARYLENE COATED 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 9100 1635 9100 1635 9100 1635 9100 1635 9100 1635 9140 0310 9140 0309 08901 00040 OR
364. N CHAN D MODE TRANSISTOR 5 625MW FT 200MHZ TRANSISTOR NPN Si 625MW FT 200MHZ TRANSISTOR PNP SI PD 625MW FT 200MHZ TRANSISTOR PNP SI PD 625MW FT 200MHZ TRANSISTOR PNP Si PD 625MW 200MHZ TRANSISTOR NPN SI PO 625MW FT 200MHZ TRANSISTOR NPN SI PD 625MW FT 200MHZ TRANSISTOR NPN S 625MW FT 200MHZ TRANSISTOR SI PD 625MW FT 200MHZ TRANSISTOR PNP SI PD 625MW FT 200MHZ TRANSISTOR PNP 1 PD 625MW FT 200MHZ RESISTOR 21 5M 1 125W TC a 0 150 RESISTOR 42 2K 1 125W TC w 0 100 RESISTOR 26 1K 1 125W F TC 0 100 RESISTOR 42 2K 1 125W F TC 0 100 RESISTOR 14 7K 1 125W TC 04 100 RESISTOR 56 2K 1 125W 04 100 RESISTOR 23 7 1 125W TC 04 100 RESISTOR 1K 199 125W TC O 100 RESISTOR 12 1K 1 125W TC 0 100 RESISTOR 10K 1 125W TC 0 4 100 RESISTOR 82 5K 1 125W TC 0 100 RESISTOR 10 1 125W TC 0 100 RESISTOR TRMR 100K 10 C TOP ADJ 1 TRN RESISTOR 31 6 1 125W TC 0 100 RESISTOR 133K 1 125W TC 204 100 RESISTOR TRMR 100K 10 TOP ADJ 1 Phe tory dekh to 7 Mfr Code 28480 28480 28480 56289 56289 28480 56289 28480 28480 28480 9 171 9 171 9N171 28480 28480 28480 29480 00000 28480 01295 28480 04713 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480
365. N4150 A13CR7 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1 4150 13051 1990 0534 5 4 LED LAMP LUM INT 2 2MCD IF 20MA MAX 28480 5082 4555 13052 1990 0524 5 LED LAMP LUM INT 2 2MCD IF 20MA MAX 28480 5082 4555 13053 1990 0534 5 LED LAMP LUM INT 2 2 IF 20MA MAX 28480 5082 4555 13054 1990 0534 5 LED LAMP LUM INT 2 2MCD IF 20MA MAX 28480 5082 4555 tH efle to Section for update Factors Selected Component 16 Sra fide ster Errata part change 6 49 SS gt A m2M LL 6 50 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Qt D nti Mfr escription Part Number Designation Number D y p Code 2314A TO 2627A Al3L1 9140 0238 3 INDUCTOR RF CH MLD 82UH 5 166DX 385LG 28480 98140 0238 2635A TO 2718A 4131 1 NOT ASSIGNED A13MP1 4040 0749 4 EXTR PC BD BRN POLYC 062 BD THKNS 28480 4040 0749 1480 0073 6 PIN ROLL 0624N DIA 254N LG BE CU 28480 1480 0073 AT3MP2 4040 0751 8 EXTR PC BD ORN POLYC 062 BD THKNS 28480 4040 0751 1480 0073 6 PIN ROLL 062 IN DIA 25 IN LG BE CU 28480 1480 0073 A13Q1 1853 0393 4 TRANSISTOR PNP SI TO 18 PD SOOMW 28480 1853 0393 A13Q2 1858 0032 8 TRANSISTOR ARRAY 14 PIN PLSTC DIP 3L585 CA3146E A13Q3 1853 0459 3 TRANSISTOR Si 625MW FT 200MHZ 28480 1853 0459 A13R1 0757 0280 3 RESISTOR 1K 19 125W TC 0 100 24546 4 1 8 0 1001 13 2 0757 0280 3 RESISTOR 1K 1 125
366. NP 2N2907A SI TO 18 PD 400MW 04713 2N2907A 1603 1854 0378 7 2 TRANSISTOR NPN 2N5109 SI TO 39 800MW 31585 2145109 1604 1854 0637 1 TRANSISTOR NPN 2N2219A SI TO 5 800MW 01295 2N2219A A16Q5 1853 0281 9 TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW 04713 2N2907A A16Q6 18540378 7 TRANSISTOR NPN 2N5109 SI TO 39 PD 800MW 3L585 2N5109 A16R 0698 3444 1 1 RESISTOR 316 1 125W F TC 2 04 100 24546 C4 1 8 T0 316R F A16R2 0757 0418 9 2 RESISTOR 619 1 125W TC 0 100 24546 4 1 8 10 619 A16R3 0698 3431 6 5 RESISTOR 23 7 1 125W TC 0 100 03888 55 1 8 0 2387 1684 0757 0421 4 1 RESISTOR 825 1 125W F 0 100 24546 4 1 8 0 825 1685 0757 0402 1 RESISTOR 110 1 125W TC 0 100 24546 4 1 8 10 111 A16R6 0698 0084 9 18 RESISTOR 2 15K 1 125W 0 100 24546 4 1 8 0 2151 A16R7 0698 3401 9 1 RESISTOR 215 1 SW F TC 0 100 28480 0698 3401 A16R8 0757 0394 0 4 RESISTOR 51 1 1 125W F TC 0 100 24546 C4 1 8 T0 51R1 F AIGRO 0698 3156 2 1 RESISTOR 34 7K 1 125W TC 40 100 24546 4 1 8 0 1472 A16R10 0757 0444 1 2 RESISTOR 12 1K 1 125W TC 2 0 100 24546 C4 1 8 T0 1212 F A16R11 07570418 9 RESISTOR 619 1 125W TC 0 100 24546 C4 1 8 T0 619R F A16R12 0698 3431 6 RESISTOR 23 7 1 125W TC 0 100 03888 PMESS 1 8 TO 23R7 F A16R13 0757 1094 9 7 RESISTOR 1 47K 1 125W TC 204 100 24546 C4 1 8 T0 1471 F A16R14 0698 3431 6 RESISTOR 23 7 1 125W TC 0 100 038
367. NTR LS BIN DUAL 4 IC GATE TTL LS NOR QUAD 2 INP GATE TTL LS QUAD 2 INP iC LCH TTL LS 4 BIT iC FF TTL LS D TYPE POS EDGE TRIG IC COMPARATOR GP DUAL TO 100 PKG IC FF TTL LS POS EDGE TRIG COM IC FF TTL LS D TYPE POS EDGE TRIG COM IC CNTR TTL LS BIN DUAL 4 BIT IC OP AMP LOW BIAS H IMPD DUAL B DIP C IC OP AMP LOW NOISE 8 DIP C PKG IC SWITCH ANLG QUAD 16 DIP C PKG DIODE ZNR 13V 5 DO 35 PD 4W 082 DIODE ZNR 13V 5 DO 35 4W 082 RESISTOR ZERO OHMS 22 AWG LEAD DIA RESISTOR ZERO OHMS 22 AWG LEAD DIA NOT ASSIGNED RESISTOR ZERO OHMS 22 AWG LEAD DIA eter beet c ele Mfr Code 01295 01295 01295 01295 01295 01295 27014 01295 01295 01295 28480 52063 17856 28480 28480 28480 28480 28480 Se Model 8901B Mfr Part Number SN74LS338N SN74LS393N SN74LS02N SN74LS26N SN74LS375N SN74LS74AN LM319H SN74LS175N SN74LS175N SN74LS393N 1820 5543 XR5534ACN DG201BK 1902 0961 1902 0961 8159 0005 8159 0005 8159 0005 m 1 prar hte rev 164UL90 a Model 8901 Reference Designation A53 AS3 5 1 A53C2 53 3 53 4 53 5 AS3C6 A53C7 53 8 53 9 53 10 AS3C11 A53C12 AS3C13 AS3C14 5 15 AS53016 53 17 53 18 A53C19 53 20 A53C21 53 22 5 23 AS3C24 53 25 53 26 53 27 53 28 5
368. Normal Indication 1 The fan runs indicating power is present on the power transformer secondaries 2 The five green LEDs on the 10 Power Supply Regulators Assembly are lighted indicating that the supplies are nominally operating If Indication Abnormal 1 Check the rear panel line fuse and line voltage selector Check Mains wiring See Service Sheet 31 2 Check the individual regulators See Service Sheet BD5 V2 Power Up Checks Procedure If there are any jumpers the TEST test points on the 13 Controller Assembly remove them Switch POWER to STBY for five seconds and back to ON Note the sequencing of the four TEST LEDs on the top of the Controller Assembly as the instrument powers up Normal Indication The four TEST LEDs light in the following sequence 1 Indeterminate for about 1 second 2 1 for about 2 seconds This indicates the start of the power up routines and the run of the Read Only Memory Check 3 2 for about 1 second This indicates the start of the power up routines and the run of the Random Access Memory Check 4 4 for about 1 4 second This indicates the running of the Local Oscillator Check 5 8 4 2 1 for about 10 seconds This indicates that all power up checks passed and that a visual front panel check can be made See 73 below 6 C 1 with 1 blinking indefinitely until a key is pressed The behavior of the LED 1 is also affe
369. O 29 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE PWR RECT 400V 750MA DO 29 DIODE SWITCHING 1N4150 50V 200MA 4NS DIODE PWR RECT 400V 750MA DO 29 DIODE PWR RECT 400V 750MA DO 29 Mfr Code 28480 28480 28480 56289 28480 28480 16299 56289 56289 56289 28480 56289 56289 28480 56289 28480 28480 28480 56289 16299 56289 16299 56289 9 171 9 171 9 171 9N171 28480 28480 9N171 9N171 9N171 28480 9N171 9N171 28480 9N171 28480 28480 Factory Selected Component Refer to Section 5 Replaceable Parts Mfr Part Number 08901 60141 08901 60269 08901 60311 1500336 901082 0160 4821 0160 4831 CACOSX7R224J050A 150D106X9020B2 1500156 902082 1500156 9020 2 0160 4832 150D226X9035R2 150D685X9035B2 0160 4812 1500685 9035 2 0160 4822 0160 4830 0160 4830 1500335 9050 2 CACOSX7R224J050A 150D336X9010B2 CACOSX7R224J050A 150D336X9010B2 1N4150 1N4150 1N4150 1 4150 1901 0028 1901 0028 1 4150 154150 1 4150 1901 0028 1 4150 1 4150 1901 0028 1N4150 1901 0028 1901 0028 A Errata part change 6 39 ee a ne Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Qt D inti Mfr 4 escription Mfr Part Number Designation Number D Y 10081 1990 0485 5 5 LED LAMP LUM INT 800UCD IF 28480 5082 4984 A10DS2 1990 0485 LED LAMP LUM INT 800UCD IF
370. ONNECTOR RF SMC 50 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 10 195 IN ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A19J3 1250 1220 0 CONNECTOR RF SMC M PC 50 OHM 28480 1250 1220 2190 0124 4 WASHER LK INTL T NO 10 1954N ID 28480 2190 0124 2950 0078 9 NUT HEX DBL CHAM 10 32 THD 067 IN THK 28480 2950 0078 A19L1 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L2 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 1913 9100 3922 4 1 120 1300 HZ 28480 9100 3922 A19L4 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 1915 9135 0068 6 2 INDUCTOR RF CH MLD 33NH 6 102DX 26LG 28480 9135 0068 A19L6 9135 0073 3 3 INDUCTOR RF CH MLD 51NH 6 102DX 26LG 28480 9135 0073 1917 9135 0068 6 INDUCTOR RF CH MLD 33NH 6 102DX 26LG 28489 9135 0068 1918 9135 0073 3 INDUCTOR RF CH MLD 51NH 6 102DX 26LG 28480 9135 0073 A19L9 PART OF ETCHED CIRCUIT BOARD A19L10 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 19111 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L12 9100 3922 4 INDUCTOR FIXED 120 1300 HZ 28480 9100 3922 A19L13 9140 0210 1 INDUCTOR RF CH MLD 100UH 5 166DX 385LG 28480 9140 0210 19 14 9125 0072 3 INDUCTOR RF CH MLD 51NH 6 102DX 26LG 28480 9135 0073 A19L15 PART OF ETCHED CIRCUIT BOARD Prefer gto cen 7 foi sp date infrsipnotien pe berg dp teo d aon gt port eh inge Repl
371. OR 6 PIN POST TYPE 28480 1251 5169 A26J4 NOT ASSIGNED A26J5 1251 5636 2 1 CONNECTOR 11 PIN M POST TYPE 28480 1251 5626 A26J6 1251 8041 9 3 CONN POST TYPE 156 PIN SPCG 8 CONT 28480 1251 8041 A26K1 0490 0618 5 1 RELAY 2C 24VDC COIL 115VAC 28480 0490 0618 2 1 08901 20049 1 1 SHIELD HI VOLTAGE 28480 08901 20049 0361 0207 5 1 RIVET BLIND DR PIN RNDH 125DIA 00000 ORDER BY DESCRIPTION 2190 0008 3 WASHER LK EXT T NO 6 141 IN ID 28480 2190 0008 2360 0119 8 1 SCREW MACH 6 32 438 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 3050 0003 3 2 WASHER FL NM NO 6 141 IN ID 375 IN OD 28480 3050 0003 3050 0227 3 2 WASHER FL MTLC NO 6 149 IN ID 28480 3050 0227 7120 4163 7 1 LABEL WARNING 5 IN WO 1 IN LG AL 28480 71204163 thee pec rcv 264UL90 Of vp Component Refer Serion e Replaceable Parts Reference Designation A26Q1 A26R A26R2 A26R3 A26R4 2695 2696 A26VR1 A26VR2 A26XA1 XA9 A26XA10 tele 6 113 HP Part Number 1884 0276 07570401 0757 0280 07570280 0698 0085 0698 0085 0757 0465 1902 3381 1902 3381 1251 1265 ty p 99 7 1 0 3 3 0 0 6 1 2 1 6 Table 6 3 Replaceable Parts Description THYRISTOR TRIAC TO 220AB RESISTOR 100 1 t25W TC 2 04 100 RESISTOR 1K 1 125W TC 20 4 100 RESISTOR 1K 1 125W TC 0 109 RESISTOR 2 6 1 1 125W F
372. OR RF CH MLD 32UH 2 166DX 385LG 28480 INDUCTOR RF CH MLD 47 6UH 2 28480 NOT ASSIGNED INDUCTOR RF CH MLD 820UH 5 2DX 45LG 28480 INDUCTOR RF CH MLD 80UH 2 166DX 385LG 28480 INDUCTOR RF CH MLD 3 6MH 5 23DX 57LG 28480 INDUCTOR RF CH MLD 10MH 5 25DX 75LG 28480 COVER 28480 WASHER LK EXT T NO 6 141 IN ID 28480 SCREW MACH 6 32 25 IN LG PAN HD POZI 00000 TRANSISTOR PNP 2N3251 S TO 18 PD 360MW 04713 TRANSISTOR ARRAY 14 PIN PLSTC DIP 04713 NOT ASSIGNED TRANSISTOR PNP 2N3251 SI TO 18 PD 260MW 04713 TRANSISTOR NPN SI 18 PD 360MW 28480 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 TRANSISTOR J FET N CHAN D MODE 70 18 SI TRANSISTOR J FET 2N5114 P CHAN D MODE 17856 TRANSISTOR NPN SI TO 18 360MW 28480 TRANSISTOR NPN S 18 PD 360MW 28480 TRANSISTOR PNP 2N2907A SI TO 18 PD 400MW 04713 TRANSISTOR PNP 2N3251 SI 18 PD 360MW 04713 TRANSISTOR NPN SI 350MW 300MHZ 04713 TRANSISTOR PNP 2N3251 SI TO 18 PD 360MW 04713 TRANSISTOR NPN 2N2219A SI TOS PD 800 01295 TRANSISTOR NPN SI TO 18 PD 360MW 28480 TRANSISTOR NPN SI TO 18 PD 360MW 28480 Factory Selected Corapanent section 9 Replaceable Parts Mfr Pa 1901 0518 1901 0539 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 9140 0210 9140 0210 9140 0271 9140 0272 91400273 9100 1652 9140 0274 9100 1666 9140 0131
373. OS EDGE TRIG 28480 1820 1940 A19UB8 1820 1940 0 IC CNTR ECL BIN SYNCHRO POS EDGE TRIG 28480 1820 1940 1809 1820 0796 2 1 IC GATE ECL NOR QUAD 2 INP 04713 MC1662L A19U10 1826 0372 2 IC MISC 8 DIP P PKG 28480 1826 0372 A19U11 1826 0372 2 iC MISC 8 DIP P PKG 28480 1826 0372 A19U12 1820 0817 B IC FF ECL D M S DUAL 04713 MC10131P A19U13 1820 1400 7 2 IC GATE ECL AND QUAD 2 INP 04713 MC10104P 1914 14 1820 1400 7 GATE ECL AND QUAD 2 INP 04713 MC10104P A19U15 1820 0828 1 2 DCDR ECL BIN 3 8 3 INP 04713 10162 A19U16 1820 0802 1 2 GATE ECL NOR QUAD 2 INP 04713 MC10102P 19017 1820 0817 8 IC FF ECL D M S DUAL 04713 MC10131P A19U18 1820 0828 1 DCDR ECL BIN 3 TO 8 LINE 3 INP 04713 MC10162P A19U19 1820 0802 1 IC GATE ECL NOR QUAD 2 INP 04713 MC10102P A19U20 1820 1052 5 1 IC XLTR ECL ECL TO TTL QUAD 24NP 04713 MC10125L A20U21 1820 1225 4 IC FF ECL D M S DUAL 04713 MC10216P A19VR1 1902 0943 5 DIODE ZNR 2 4V 5 DO 35 PD 4W 037 28480 1902 0942 A19VR2 1902 0049 2 3 DIODE ZNR 6 19V 5 DO 35 PD AW 28480 1902 0049 A19VR3 1902 0049 2 DIODE ZNR 6 19V 5 DO 35 28480 1902 0049 A19VR 1902 0049 2 DIODE ZNR 6 19V 5 DO 35 PD 28480 1902 0049 A19W1 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 A19W2 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 A19W3 NOT ASSIGNED A19WA4 8159 0005 0 RESISTOR ZERO OHMS 22 AWG LEAD DIA 28480 8159 0005 fra be Get treatise 1 fer
374. OTE 2 OPTION 032 12 5 KHZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 032 AND 037 OPTION 033 25 KHZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 033 AND 032 OR 033 AND 037 OPTION 035 30 KHZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 035 AND 032 035 AND 033 OR 035 AND 037 OPTION 032 12 5 KMZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 032 AND 037 OPTION 033 25 KHZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 033 AND 032 OR 033 AND 037 OPTION 035 30 KHZ FILTER WHEN FILTER OPTIONS INSTALLED ARE 035 AND 032 035 AND 033 OR 035 AND 037 CONNECTOR RF SMC M SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK CONNECTOR RF SMC M SGL HOLE RR 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THO 067 IN THK CONNECTOR 3 PIN M POST TYPE INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 INDUCTOR RF CH MLD 1MH 5 2DX 45LG 60 INDUCTOR RF CH MLO 1MH 5 2DX 45LG 60 BOARD COVER IF CHAN FLTR TRANSISTOR J FET 2N5114 P CHAN TRANSISTOR J FET 2N4391 N CHAN D MODE TRANSISTOR NPN SI TO 18 500MW TRANSISTOR NPN SI TO 18 PD 500MW TRANSISTOR PNP 2N4959 SI TO 72 PD 200MW CORE SHIELDING BEAD TRANSISTOR NPN 2 5179 SI TO 72 PD 200MW TRANSISTOR PNP St PO 625MW FT 200MHZ TRANSISTOR NPN SI 18 360MW TRANSISTOR NPN 61 18 PO 360MW TRANSISTOR PNP SI PD 625MW FT 200MHZ TRANSISTOR NPN SI 18 PD 360MW TRANSISTOR PNP SI PD 625MW FT 200MHZ
375. OVER SCREW TPG 4 40 5 IN LG PAN HO POZI STL SCREW 440X1 2 TAPTITE T 10 PNTX ATTACH MOTHERBOARDS TO FRAME RFI ROUND STRIP CNDCT ELSTMR 07 IN OD LABEL INFORMATION 325 IN WD 1 75 IN LG OPTION 004 ONLY OPERATION 360 440 HZ NOT ASSIGNED NOT ASSIGNED bEartory ceberted f otnponent Section Mfr Code 28480 28480 28480 28480 00000 28480 00000 28480 00000 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 n Replaceable Parts Mfr Part Number 7120 8968 08901 00116 08901 00193 08901 00127 ORDER BY DESCRIPTION 08901 00173 ORDER 8Y DESCRIPTION 08901 00126 ORDER BY DESCRIPTION 08901 00125 2200 0103 08902 00040 2200 0103 08901 00123 08901 00177 08902 20025 0624 0100 0624 0653 8160 0097 7120 7032 A Erota ppt change 6 173 2314A 2432A MP77 2441A AND ABOVE 2314 2449 MP78 2505 AND ABOVE MP78 2314A TO 2636A MP79 2642A AND ABOVE MP79 MP809 MP8149 2314A TO 2912A S1 29144 AND ABOVE SI 1 Wi W8 to section 7 6 174 Replaceable Parts Reference HP Part C Designation Number MP75 5020 8806 9 MP76 T88695 4 08901 00157 9 8710 1637 6 1400 0510 8 08902 00024 1 08901 00214 0 08901 00211 7 0380 0003 9 2360 0115 4 2190 0006 7 3101 2080 9 5041 1418 9 2200 0164 5 3101 2915 9 91004255 8 7100 1283 4 08901 00140 1 2190 0034 5
376. OWER VOLTMETER T l 1 THIS PAGE DEMODULATOR 260 kHz ET IF AMPLIFIER AM LIMITERS FM FILTER ATTENUATOR BUFFER DISCRIMINATOR m SWITCHING DETECTOR ee COUNT DECODERS INSTAUMENT BUS TO FROM CONTROLLER AM CALIBRATION 0 VCO 8 fpe DIVIDERS SENSOR P TO COUNTER IDENTIFIER MER MELEN 40 80 MHz SWITCH ee LOW FREQUENCY p wem worse Lo REDI 2 pw AF FILTERS E TUNE E INPUT z OUTPUT DECODERS TO U 4 AND LEM YOLINE TEN s SELECTIVITY MEASUREMENT LATCHES HIS P _ ALC BW AND DEFEAT L OUTPUT INSTRUMENT BUS AGE HIGH OPTION 030 SERIES ONLY m AMPLIFIERS shinee ce ye FROM CONTROLLER FREQUENCY IF AMS FM SQUELCH VCO CHANNEL HF VCO TUNE FIRST PROGRAMMABLE SECOND OUTPUT A a ee MODULATION AND AMPLIFIER FILTERS ES THIS PAGE INSTRUMENT VIBRATOR gt m CONTROLLER IF OUT ae _ A VOL T TAL oo p AUD 10 COUNTER AUDIO DISTORTION wots ANALYZER AUDIO SCHMITT FREQ OFFSET CURRENT TRACK LOOP 2 COUNTER COUNTER SWITCH T
377. Overvoltage Detector has tripped This may have been due to the nature of the audio signal for example a high frequency audio signal which overrides the circuits preceeding a low pass filter or due to a problem in the audio circuits See Service Sheet BD4 Error 73 No IF Signal Found after Finding an RF Input An RF input signal has been sensed by the Peak RF Level Detector but no IF signal has been sensed by the IF Level Detector See Service Sheets 4 and 9 Error 74 FM Calibrator Underdeviation The frequency deviation of the FM Calibrator is less than 30 kHz See Service Sheet 29 Error 75 FM Calibrator Overdeviation The frequency deviation of the FM Calibrator is greater than 38 kHz See Service Sheet 29 Error Messages aB 15 Service 8B 16 Model 8901B Error 76 AM Calibrator Modulators Unequal The difference between the x10 AM Cal signal for the two channels is greater than 0 6V See Service Sheet 30 Error 77 AM Calibrator Channel B Out of Range The AM Cal level from Channel B is not within the range of 1 8 to 2 2V An unterminated CALIBRATION AM FM OUTPUT will cause this error See Service Sheet 30 Error 78 Key Not Found A key closure was not found after a keyboard interrupt except when a keyboard entry is in progress See Service Sheet 25 Error 79 Audio Autorange Rangeback The audio autorange routine has found the audio signal level is too high has changed to a less sensitive range and has immediately
378. PD 625MW 200MHZ 28480 1853 0459 A71Q2 1854 0404 0 9 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 7102 1853 0459 3 TRANSISTOR PNP SI PD 625MW FT 200MHZ 28480 1853 0459 7104 18540404 9 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 7105 1854 0404 0 TRANSISTOR NPN SI TO 18 360MW 28480 1854 0404 A71Q6 1853 0459 3 TRANSISTOR SI PD 625MW 200MHZ 28480 1853 0459 A71Q7 18550235 7 1 TRANSISTOR J FET N CHAN D MODE 52 S 28480 1855 0235 A71Q8 1853 0459 3 TRANSISTOR PNP SI PD 625MW FT 200MHZ 28480 1853 0459 A71Q9 1854 0404 0 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 1010 1854 0404 9 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 111 1855 0420 2 3 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 244391 A71Q12 18550420 2 TRANSISTOR J FET 2N4391 N CHAN D MODE 01295 2 4391 71012 1854 0404 9 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0404 71014 1854 0404 0 TRANSISTOR NPN SI TO 18 PD 350MW 28480 18540404 A7iRt 0699 0678 9 4 RESISTOR 900 01 5 28480 0699 0678 A71R2 0699 0681 4 4 RESISTOR 100 01 IWF TC 0 5 28480 0599 0681 A71R3 0698 3441 8 18 RESISTOR 215 1 125W 0 100 24546 C4 1 8 T0 215R F 7184 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 CA 1 8 TO 215R F A71R5 0757 0274 5 14 RESISTOR 1 21K 1 125W TC 0 100 24546 C4 1 8 TO 1211 F A71R6 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F A71R7 0698 00
379. PT OPTION 001 INCLUDES ATTACHING HARDWARE Factory selected te Mfr Code 26480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 00000 28480 28480 28480 28480 00000 28480 28480 sere tun Replaceable Parts Mfr Part Number 08901 60095 86701 00017 1520 0067 0400 0009 1251 3201 1251 4283 08901 60306 0624 0216 3160 0300 86701 00017 1520 0067 08901 603075 0400 0009 1251 3201 1251 3897 1520 0067 86701 0001 0160 3968 1906 0231 1200 0043 ORDER BY DESCRIPTION 2110 0083 2110 0043 8150 0005 2190 0104 ORDER BY DESCRIPTION 08731 210 3250 3811 hehe quer 6 165 6 166 Replaceable Parts Reference HP Part Qty Designation Number D 2314A TO 2332A J4 1250 1811 5 2333A AND ABOVE 44 1250 1895 5 35 1250 0083 1 4 2190 0016 3 7 2950 0001 8 7 46 1250 0083 1 2190 0016 3 2950 0001 8 J7 1250 0083 1 2190 0016 3 2950 0001 8 JB J9 J10 J11 1250 1811 5 2314A TO 2332 J12 1250 1811 5 2333A AND ABOVE J12 1250 1895 5 J13 1250 1811 5 o Section far update inforiiation Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS ADAPTER COAX STR F N F SMA CALIBRATION OUTPUT RF POWER EXCEPT OPTION 001 INCLUDES ATTACHING HARDWARE ADAPTER COAX STR F N F SMA CALIBRATION OUTPUT RF POWER EXCEPT OPTION 001
380. QLMP 1613 QLMP 1613 1LM 1 2350 1200 0901 1990 0670 1990 0670 1990 0670 1990 0670 1990 0670 1990 0678 1990 0950 1990 0487 1990 0487 1990 0487 1990 0487 1990 0487 HLMP 1523 QLMP 1613 1990 1273 1990 1273 1980 1273 1990 1273 1990 0950 1990 0950 1990 0950 1980 0678 QLMP 1613 QLMP 1613 QLMP 1613 HLMP 1523 1LM1 2350 1200 0901 1251 5169 1200 0507 Errata part change rev 160290 Model 8901B Reference Designation 1 2 4 5 6 1 7 AIMP8 ATMPS 10 ATMP11 A1MP12 AIMP13 AIMP14 1 15 16 A1MP17 A1MP18 A1MP19 A1MP20 AYMP21 ATMP22 A1MP23 A1MP24 1 25 A1MP26 A1MP27 A1MP28 A1MP29 A1MP30 1 1 A1MP32 AIMP33 AIMP34 A1MP35 A1MP36 7 AIMP38 9 40 4 1 42 A1MP43 A1MP44 AIMP45 A1MP46 A1R1 A1R2 AIRS 185 7 rev 16JUL90 Number 5041 0252 5041 0943 5041 0252 5041 0319 504 1 0484 5041 0351 5041 0252 5041 0252 5041 0319 5041 0386 5041 0508 5041 0286 5041 0286 5041 0451 5041 0252 5041 0252 5041 0319 5041 0386 5041 0835 5041 0832 5041 0829 5041 0838 5041 0252 5041 0252 5041 0319 5041 0386 5041 0836 5041 0833 5041 0830 5041 0833 5041 0252 5041 0252 5041 0319 5041 0386 5041 0837 5041 0834 5041 0821 5041 1672 5041 0252 5041 0252 5041 0
381. R 12 1K 1 125W TC 0 100 24546 4 1 8 0 1212 A71R4Q 0757 0465 6 RESISTOR 100K 1 125W F TC 0 100 24546 C4 1 8 T0 1003 F A71R41 0698 3154 0 RESISTOR 4 22 1 125W TC 0 100 24546 4 1 8 10 4221 A 1FA2 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 190 24546 4 1 8 0 2151 A71R63 0698 0084 9 RESISTOR 2 15 1 125W TC 2 04 100 24546 C4 1 8 T0 2151 F A71R44 07570274 5 RESISTOR 1 21K 1 125W O 100 24546 C4 1 8 TO 1211 F A71RA5 0698 0084 9 RESISTOR 2 15K 1 125W TC 0 100 24546 C4 1 8 TO 2151 F A71R46 0698 0084 9 RESISTOR 2 15K 1 125W TC a 04 100 24546 1 8 10 2151 A71R47 0698 0082 7 RESISTOR 464 1 125W F TC 0 100 24546 4 1 8 0 4640 A71R48 0698 0084 9 RESISTOR 2 15K 1 125W TC 2 0 4 100 24546 4 1 8 10 2151 A71R49 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 4 1 8 0 1003 A71R50 0757 0465 6 RESISTOR 100K 1 125W TC 0 100 24546 C4 1 8 T0 1003 F A71R51 0698 3154 0 RESISTOR 4 22K 1 125W TC 04 100 24546 C4 1 8 TO 4221 F A71TP1 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 71 2 1251 0600 0 CONNECTOR SGL CONT PIN 1 14 MM BSC SZ SQ 28480 1251 0600 A71U1 1826 1020 9 ANALOG SWITCH 2 SPST 10 METAL 17856 DG200ABA A71U2 1826 1020 9 ANALOG SWITCH 2 SPST 10 METAL 17856 DG200ABA A71U3 1826 1020 9 ANALOG SWITCH 2 SPST 10 METAL 17856 DG200ABA A71U4 1826 0606 5 IC SWITCH ANLG QUAD 16 DIP C PKG 17856 DG201BK A71U5 1826 1020 9
382. R 28480 0160 4812 4 43 0160 4791 4 1 CAPACITOR FXD 10PF 5 100VDC CER 0 30 28480 0160 4791 4 44 0160 4795 8 2 CAPACITOR FXD 4 7PF 5 100VDC CER 28480 0160 4795 4 45 0160 5719 8 1 CAPACITOR FXD 620PF 5 100VDC CER 28480 0160 5719 thefer Section 7 for undare indorniation selected Corspenent Refer Section A Errata pact change rev 16JUL90 6 21 ___ M lil 1 c Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Mfr ty Description Mfr Part Number Designation Number y Code 4 46 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 01604832 4 47 0160 4822 2 6 CAPACITOR FXD 1000 54 100VDC CER 28480 0160 4822 AACAB 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 4 49 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 4 50 0160 4819 7 2 CAPACITOR FXD 2200PF 5 100VDC CER 28480 0160 4819 4 51 9160 4819 7 CAPACITOR FXD 2200PF 5 100VDC 28480 0160 4819 4 1 1901 1098 1 DIODE SWITCHING 1 4150 50V 200MA 4NS 9N171 1N4150 A4CR2 4901 1098 4 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 A4CR3 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 AACRA 1901 1098 1 DIODE SWITCHING 1N4150 50V 200MA 4NS 9N171 1N4150 AACRS 1901 1098 1 DIODE SWITCHING 1N4150 SOV 200 4NS 9N171 1N4150 AACRE 08901 80037 3 4 MATCH DIODE SET 28480 08901 80037 AACR7 089
383. R FXD 220PF 5 1300VDC CER 72982 8121 M100 COG 221J A24C19 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A24C20 0160 3878 6 CAPACITOR FXD 1000PF 4 2096 100VDC CER 28480 0160 3878 A24C21 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 22 0160 2878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 23 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 24 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 24 25 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 26 0160 2878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A24C27 0160 2878 6 CAPACITOR FXD 1000PF 20 100VDC 28480 0160 3878 24 28 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 29 0160 3878 6 1000PF 20 100VDC CER 28480 0160 3878 24 ASSIGNED A24C31 0160 3876 4 CAPACITOR FXD 47 20 200VDC CER 28480 0160 3876 A24C32 0160 3875 3 CAPACITOR FXD 22PF 5 200VDC CER 0 30 28480 0160 3875 A24C33 0160 3876 4 CAPACITOR FXD 47PF 20 200VDC CER 28480 0160 3876 A24C34 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 24 35 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A24C36 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A24CR 1901 0880 7 DIODE GEN PRP 125MA DO 35 28480 1901 0880 A24CR2 1901 0880 7 DIODE GEN PRP 125MA 00 35 28480 1
384. RIGGER REN S SOURCE AMPLIFIER FM COUNT REFERENCE 09 PI 9 7 OUTPUT OSCILLATOR rn DECODERS INSTRUMENT BUS COUNTER ODE EISE SENSOR MODULE 9 he RI ee POST NOTCH NOTCH REMOTE CONTROL 1 1 SWITCH CONTROL igs FILTER CONVERTER SNITCH 1 T gt INPUT STEERS TIME BASE 4 AMS zu c DE SELECTOR DIVI pa T 4 COUNTER ul 5 MHz M oup E CONTROL p 4 IIME BASE 10616 AUDIO REMOTE CONTROL CALIBRATION DECODERS 4799 AND FM CALIBRATORS IF DISTORTION RF SWITCH 2 7 2725 TIME BASE ta DER a eae J OUTPUT _ LATCHES CONTROL 6 25 kHz POWEA AEF AMPLIFIER VCO 8 O RAMP GATE f OSCILLATOR M CAL Eyi I E EEEE COUNTER DECODEAS REMOTE CONTROL 9 9 AND 1 uaranxr T 2 gt sm CALIBRATOR INSTRUMENT al THIS PAGE LATCHES BUS TO OTHEA Tu GO za m AVE INSTRUMENT SECTIONS KEYBOARD AND DISPLAY OU 4 AF PWR DECODERS INSTRUMENT BUS SENSOA annnonpgnagon TO FROM CONTROLLER RESISTOR AMPLIFIER INSTRUMENT BUS DIGITAL TO ANALOG 200 CONVERTERS FM CALIBRATOR CONTROLLER FM SOURCE 10 3 LIMITER AMPLITUDE ATTENUATOR 2 MHz CLOCK OR MODULATOR 5 M ro VOLTMETEA ROM CONT
385. ROL POWER BE 1 0 4 x Lan ui L A CALIBRATION x 50 MHz OUTPUT REMOTE TO HP IB INTER MICROPROCESSOR TESTA LATCHES Face y CONNECTOR 40V ART AMPLIFIER DVERPONER REAR PANEL e EN PROTECT DECODERS DECODERS 5 ADDRESS BUS OPTION 030 STATUS STATUS AND SERIES ONLY LATCHES LATCHES C BATTERY p x 7 INSTRUMENT BUS 2 TO FROM CONTAOLLEA LINE INPUT H MEMORY INSTAUMENT BUS ROM AND FROM CONTROLLER BD3 10 kHz DECODERS 6 2 Service Mode 89018 19 1 KEYBOARD 1 xOption 030 assemblies only available for instruments with serial number prefixes 23144 TO 26364 Option 030 assemblies only available for instruments with serial number prefixes 2642 and above OVERALL BLOCK DIAGRAM B D 1 Block Diagram Assembly Locations SEE REVERSE SIDE 8E 4 6 38 Q 208 d s 1 EMT 136440 gt 19 1 HOLINS JY 7 ones al H3110H1N02 4004 01 Ld fi 91 7 09 LNSWNYLSNI am an m m e u012313 ee ee op ou ee 5
386. S03N LF256H SN74LS138N 0 0005 1902 0946 1902 3082 1902 3024 1N827 Errata part change 6 31 Model 8901B Reference HP Part Designation Number 08901 60186 A6C1 0180 0058 A6C2 0180 0058 A6C3 0160 4636 6 4 0160 2660 6 5 0160 4635 6 6 0160 4795 6 0160 4807 6 8 0121 0105 A6C9 0160 4833 6 10 6 11 0180 0197 6 12 6 13 6 14 0160 4832 15 0160 4835 A6C16 0160 4812 6 17 0160 4832 6 18 0160 4822 6 19 0160 4822 6 20 0160 4835 6 21 0160 4833 A6C22 0160 4833 A6C23 0160 4812 6 24 0180 0197 6 25 0180 1746 6 26 0160 4832 6 27 6 28 6 29 0160 4807 A6C30 0160 4835 6 31 0160 3501 6 32 0180 0197 A6C33 A6C34 0180 0197 A6C35 A6C36 01800228 A6C37 0160 5528 A6C38 0180 1746 A6C39 0180 0197 6 40 0150 3533 A6C41 0180 1746 6 42 0160 4807 A6CA3 0160 4334 thiefer to Section 7 fo rev 16J7UL90 n th amp mmo mM U 0 Table 6 3 Replaceable Parts Description DEMODULATOR ASSEMBLY CAPACITOR FXD SOUF 75 10 25VDC AL SOUF 75 10 25VDC AL CAPACITOR FXD 255PF 1 100VDC MICA CAPACITOR FXD 20 2 500 0 CER 0 30 CAPACITOR FXD 212PF 1 100VDC MICA 4 7 5 100VDC CER CAPACITOR FXD 33PF 5 100VDC CER 0 30 CAPACITOR V TRMR CER 9 35PF 200V PC MTG CAPACITOR
387. STOR 1 47K 1 125W TC 04 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 1 47K 1 125W TC 0 100 RESISTOR 215 1 125W TC 04 100 RESISTOR 215 1 125W F TC 20 4 100 RESISTOR 900 01 1W 0 5 RESISTOR 100 01 1W TC 0 4 5 RESISTOR 1 21K 1 125W 0 100 RESISTOR 215 1 125W 0 100 RESISTOR 2 15 1 125W TC 0 100 RESISTOR 464 1 125W TC 04 100 RESISTOR 1 21K 1 125W 0 100 RESISTOR 215 1 125W 0 100 RESISTOR 2 15K 1 125W TC 2 04 100 RESISTOR 2 15K 1 125W 0 100 RESISTOR 1 21 1 125W 204 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 90 9 1 125W TC 0 100 RESISTOR 90 9 1 125W TC 0 4 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 2 15 1 125W 0 100 RESISTOR 2 15 1 125W 04 100 RESISTOR 215 1 125W TC 0 100 TRANSFORMER FLTR SWITCH ANLG DUAL TO 100 PKG iC ORVR TTL AND DUAL 2 INP TTL LS 3 TOS LINE 3 INP IC FF TTL LS D TYPE POS EDGE TRIG COM IC OP AMP GP 8 Factory Selected 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 24546 28480 28480 24546 24546 24546 24546
388. STOR 21 5K 1 325W F TC 2 0 100 RESISTOR 51 1 1 125W TC 0 100 Factory Selected C oriponoeont Refer ro Section Mfr Code 28480 00000 28480 28480 28480 28480 28480 28480 28480 28480 04713 04713 04713 04713 04713 28480 28480 28480 24546 24545 24546 24546 24546 24546 24546 24546 24546 28480 24546 24546 24546 24546 Model 8901 Mfr Part Number 08901 00032 ORDER BY DESCRIPTION 001 0176 5001 0176 08901 00054 0363 0158 0363 0159 0363 0205 0363 0205 3050 0023 2N2907A 2N2907A 2N2907A 2N2907A 2 2907 1853 0020 1853 0020 1854 0071 C3 1 8 TO 75RO F C4 1 8 T0 825R F C3 1 8 TO 19R6 F C3 1 8 TO 19R6 F C4 1 8 T0 2152 F C3 1 8 TO 75RO F 4 1 8 0 825 4 1 8 0 2152 3 1 8 61 9 0699 1213 C3 1 8 TO 75R0 F C4 1 8 T0 825R F C4 1 8 T0 2152 F C4 1 8 T0 51A1 F A Errata por change rev 1GJULIO Qty Model 8901B Reference HP Part Designation Number D 2314A TO 2414A 15 15 0699 0136 4 2422 AND ABOVE 15816 15 16 0757 0394 0 15 17 0757 0199 3 A15R18 2314A TO 2414A 0699 0136 4 Al5R20 0699 0132 0 15 21 0699 0133 1 2422A AND ABOVE Al5R19 16 20 16 21 A15R22 0698 7209 4 A15R23 0757 0421 4 A15R24 0699 0071 6 A15R25 0757 0199 3 A15R26 0699 0071 6 2314 TO 2414 16 27 0699 0137 5 2422A AND ABOVE Al5R27 A15R28 0757 0401 0 2314A TO 2414A AlER29 0699 0135 3 A
389. SWITCH ANLG QUAD 16 DIP C PKG IC FF TTL LS D TYPE POS EDGE TRIG COM IC FF TTL LS D TYPE POS EDGE TRIG COM IC OP AMP GP 99 PKG IC SWITCH ANLG QUAD 16 DIP C PKG IC FF TTL LS POS EDGE TRIG COM IC CONV 8 B D A 16 DIP C PKG IC LCH TTL LS COM CLEAR 8 TTL LS 3 TO 8 LINE 3 INP AMP LOW BIAS HIMPD TO 99 PKG DRVR TTL AND DUAL 24 IC DRVR TTL AND DUAL 2 INP IC MV TTL LS MONOSTBL RETRIG IC OP AMP LOW DRIFT TO 99 PKG DIODE ZNR 2 37V 5 00 7 PD 4W 07495 DIODE ZNR 2 37V 5 DO 7 PD TC 074 DIODE ZNR 1N827 6 2V 5 DO 7 PD 4 DIODE ZNR 3 6V 5 DO 35 PD 4W 036 DIODE ZNR 1N827 6 2V 5 DO 7 PD 4W ec 1 a OO GNE Mtr Code 28480 24546 24548 24546 24546 24548 24546 24546 24546 28480 24546 24546 28480 28480 28480 28480 28480 28480 28480 28480 31585 31585 17856 01295 01295 21585 17856 01295 06665 01295 01295 27014 01295 01295 01295 28480 28480 28480 24046 28480 24046 Factory Selected Component Refer to Section 5 Model 8901B Mfr Part Number 0699 0842 4 1 8 0 1472 C4 1 8 T0 2372 F C4 1 8 T0 4222 F C4 1 8 T0 1002 F C4 1 8 T0 1002 F C4 1 8 T0 4222 F C4 1 8 T0 4222 F 0698 3406 4 1 8 0 4222 0898 3391 C4 1 8 TO 14 R7 F C4 1 8 TO 2611 F 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1826 0990
390. T Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 0 300 SPCL to switch in the Channel Output Attenuator and select channel 1 Fine tune the signal source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between 640 and 1000 mVpp If faulty see Service Sheet 33 and check the circuits of channel 1 Set the oscilloscope gain for a display of 6 divisions peak to peak Key in 0 3D1 SPCL to switch out the Channel Output Attenuator Decrease the oscilloscope s vertical gain by a factor of 10 The waveform should be between 5 9 and 6 1 divisions peak to peak If faulty see Service Sheet 33 and check the Channel Output Attenuator Increase the signal source frequency until the waveform drops to 3 divisions peak to peak Record the signal source s frequency Decrease the signal source frequency until the waveform rises to 6 divisions peak to peak then drops to 3 divisions peak to peak Note the signal source s frequency The difference between this frequency and the frequency in step 5 should be as indicated in Table 8D 11 The filter bandwidth depends on the option installed If faulty see Service Sheet 33 and check the First Channel 1 Filter Table 80 11 Bandwidth of First Channel 1 Filter 77 Step 6 Frequency Difference Limits kH
391. T ASSIGNED CAPACITOR FXD 047UF 2 50VDC POLYE CAPACITOR FXD 4000PF 1 100VDC MICA CAPACITOR FXD OSUF 1 200VDC CAPACITOR FXD 3900PF 1 500 0 MICA CAPACITOR FXD 010 1 200VOC CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 4 195 200VDC CAPACITOR FXD 4000PF 1 100VDC MICA CAPACITOR FXD 3900PF 1 500VDC MICA NOT ASSIGNED CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 6 8UF 10 35VDC TA CAPACITOR FXD 01UF 20 100VOC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER NOT ASSIGNED CAPACITOR FXD 22UF 1096 15VDC TA CAPACITOR FXD 22UF 10 15VDC TA NOT ASSIGNED NOT ASSIGNED CAPACITOR FXD SOUF 75 1096 25VDC AL Factory elected ctponent Refer Section Mfr Code 28480 72136 28480 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 56289 56289 56289 al Model 8901B Mfr Part Number 0160 6606 DM15F151J0300WV1CR 0160 4084 0160 3879 0160 3879 0160 3879 0160 2204 0160 2201 1500105 9035 2 0160 3165 0160 2302 0160 5340 0160 4217 0160 5201 0160 3879 0160 3879 0160 5201 0160 2302 0160 4217 0160 3879 0160 3879 01
392. T BEFORE REMOVING ANY COVER do Section 7 aeter Selected Component Refer to section peos bange 6 172 rev LOJSULIO 8901B Reference Designation 2314A 2804A MP64 2806A AND ABOVE MP64 2314A TO 2608A M P65 2619A AND ABOVE M P65 MP66 2314A TO 2635A MP67 2636A AND ABOVE MP67 2314A TO 2608A M P68 2619A AND ABOVE M P68 69 2314A TO 2449A MP70 2505A AND ABOVE MP70 MP71 MP72 MP73 MP74 ba 16 2171 290 Number D 7120 8968 8 1 08901 00116 1 1 08901 00193 4 1 08901 00127 4 1 2360 0115 4 08901 00173 0 1 2360 0115 4 08901 00126 3 1 2360 0115 4 08901 00125 2 1 2200 9103 2 2 08902 00040 7 1 2200 0103 2 2 08901 00123 0 1 08901 00177 4 1 08902 20025 4 1 0624 0100 5 0624 0653 3 111 8160 0097 3 1 7120 7032 5 1 Toe update inlorination Table 6 3 Replaceable Parts Description MISCELLANEOUS PARTS LABEL SHIPPING YEL W BLK IMAGE HP PACKAGING LIST BOTTOM COVER INSULATOR BOTTOM COVER INSULATOR BAFFLE AIR REAR LEFT SCREW MACH 6 32 312 IN LG PAN HD POZ BAFFLE AIR REAR LEFT SCREW MACH 6 32 3124N LG PAN HD POZI BAFFLE AIR FRONT RIGHT SCREW MACH 6 32 3124N LG PAN HD POZI REAR AIR BAFFLE SCREW MACH 4 40 25 IN LG PAN HO POZI REAR AIR BAFFLE SCREW MACH 4 40 25 IN LG PAN HD POZI AIR DUCT COVER AIR DUCT COVER INPUT SWITCH C
393. TC 0 100 RESISTOR 46 4 1 OSW TC 0 100 RESISTOR 121 1 5W TC 0 100 RESISTOR 2 61K 1 125W TC 0 100 RESISTOR 51 1 1 05W TC 04 100 RESISTOR 51 1 1 05W TC 20 100 RESISTOR 287 1 05W TF TC 0 100 RESISTOR 4 22K 1 125W TC 0 100 RESISTOR 1 21 1 125W TC 0 100 RESISTOR 51 1 1 05W F TC 0 100 RESISTOR 1 78K 1 125W TC 20 100 RESISTOR 17 8 1 125W F 0 100 RESISTOR 215 1 125W TC Q 100 RESISTOR 23 7 1 125W TC 0 100 RESISTOR 619 1 125W TC 04 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 4 22K 1 125W TC 04 100 RESISTOR 17 8 1 125W TC 0 100 RESISTOR 51 1 1 125W TC 0 100 RESISTOR 31 6 1 125W TC 0 100 RESISTOR 51 1 1 125W TC 204 100 RESISTOR 619 1 125W TC 0 100 RESISTOR 287 1 125W TC 0 100 RESISTOR 100 1 125W TC 0 100 RESISTOR 100 1 125 TC 0 100 RESISTOR 619 1 125VV 0 100 RESISTOR 46 4 1 125W TC 0 100 RESISTOR 5 62 1 125W TC 204 100 RESISTOR 46 4 1 125W 0 100 RESISTOR 147 1 125W 0 100 RESISTOR 909 1 125W TC 0 1009 RESISTOR 4 22 1 125W 90 100 TORD14 OTRN MIXER CIRCUIT INSULATOR XSTR TFE CONNECTOR SGL CONT SKT 018 IN BSC SZ 2 Tee bead 24546 24546 28480 28480 24546 24546 2
394. TL T NO 8 168 IN ID NUT HEX DBL CHAM 8 32 THD 085 IN THK CAPACITOR FDTHRU 5000PF 80 20 200V WASHER LK INTL T NO 6 168 IN ID NUT HEX DBL CHAM 8 32 THD 085 IN THK CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 010 20 100VDC CER CAPACITOR FXD 300PF 5 500VDC MICA CAPACITOR FXD 100PF 5 300VDC MICA CAPACITOR FXD 4 7UF 10 35VDC TA CAPACITOR FXD 8 2PF 25PF 500VDC CER INSULATOR BEAD GLASS CAPACITOR FXD 1000PF 20 100VDC CER CAPACITOR FXD 33PF 5 300VDC MICA CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 36PF 5 300VDC GL CAPACITOR FXD 200PF 5 300VDC GL DIODE SM SiG SCHOTTKY DIODE SM SIG SCHOTTKY DIODE VVC 82 5 C2 C20 MIN 2 BVR 20V CONNECT OR RF SMC M PC 50 OHM WASHER LK INTL T NO 10 195 IN ID NUT HEX DBL CHAM 10 32 THD 067 IN THK COIL VARIABLE INDUCTOR RfF CH MLD 4 7UH 10 1050X 26LG COIL 3 1 2 TURNS OSC COVER TRANSISTOR NPN SI TO 39 1W FT 800MHZ INSULATOR XSTR DAP GL TRANSISTOR NPN Si PD 300MW 200MHZ RESISTOR 10K 1 125W O 100 RESISTOR 1 47K 1 125W 0 100 RESISTOR 10K 1 05 PYWW 0 10 RESISTOR TRMR 1K 10 SIDE ADJ 17 TRN RESISTOR 7 1K 1 05W PWW 0 10 zu sp A 160 arent Mfr Code 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 2
395. TO 348R F C4 1 8 TO 34BR F 4 1 8 79 1191 0757 1000 4 1 8 0 5111 PMES55 1 8 TO 26R1 F C4 1 8 T0 101 F 4 1 8 0 101 4 1 8 0 1001 208 103 C4 1 8 T0 1003 F 4 1 8 0 1001 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 1251 0600 MC10131P MC10105P SN74LS132N SN74ALS14N SN741S197N SN74S74N SN74LS151N SN74LS196N SN74LS197N SN74LS196N SN74LS197N SN74LS04N SN74LS75N SN74LSO3N 1200 0638 SN74LS03N 1200 0638 SN74S74N SN74S138N 5 741500 SN74LS197N SN741 SOON SN7510 AN 04 10 0423 quati A RE 6 47 a DOM rev 16JUL90 Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part C Q Mfr ty Description Mfr Part Number Designation Number D y E Code A13 08801 60244 2 1 CONTROLLER ASSEMBLY 28480 08901 60244 A13C1 0180 2111 0 3 CAPACITOR FXD 33UF 10 35VDC 56289 1500336 90355 Ai3C2 0160 4832 4 CAPACITOR FXD 010 10 100VDC CER 28480 0160 4832 A13C3 0160 4835 7 CAPACITOR FXD 1UF 10 50VOC CER 28480 0160 4835 A13C4 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A13C5 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 A13C6 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A13C7 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 A13C8 0180 0100 3 2 CAPACITOR FXD 4 7UF 10 35VDC 56289 150D475X9035B2 A13C9 0160 4832 4 CAPACITOR FX
396. TOR NPN S 300MW 200MHZ RESISTOR 10K 1 125W F 0 100 RESISTOR 10K 1 125V TC 04 100 RESISTOR 1 1 125W TC 0 100 RESISTOR 2 15 1 125V F TC 0 100 RESISTOR 10 1 125W TC 0 4 100 RESISTOR 511 1 125 04 100 RESISTOR 10K 1 125V 34 100 RESISTOR 82 5K 1 25 TC 20 100 RESISTOR 511 1 125W F TC 0 100 RESISTOR 100K 1 125W 0 100 RESISTOR 51 1 1 125W 0 100 NETWORK 5 8 SIP1 0K OHM X 7 RESISTOR 68 1 1 125W 04 100 RESISTOR 1K 1 125W TC 0 100 RESISTOR 348 1 125W TC 0 100 Mfr Code 28480 26480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 00000 28480 04713 04713 28480 28480 28486 24546 24546 28480 28480 24546 24546 24546 24546 24546 24546 24546 01121 24546 24546 24546 Factory Selected Component Refer to Section 3 Model 8901B Mfr Part Number 1901 0535 5082 4558 1250 1220 2190 0124 2950 0078 1250 1220 2180 0124 2950 0078 1250 1220 21900124 2950 0078 1250 1220 2190 0124 2950 0078 1250 1220 2196 0124 2950 0678 1250 1220 2192 0124 29500078 9100 2245 08901 06233 ORDER BY DESCRIPTION 08971 00063 1853 0540 1853 0540 1853 0020 18532020 1854 0071 4 1 8 70 1002 CA 1 8 T0 130C2 F 0698 8 2 0595 5516
397. TOR RF CH MLD 47UH 10 1050X 26LG 28480 9109 2272 AALS 9100 2272 5 INDUCTOR RF CH MLD 47UH 10 105DX 26LG 28480 9100 2272 ASMP 1 08901 00020 6 1 COVER FM MOD 28480 08901 00020 2190 0008 3 12 WASHER LK EXT T NO 6 141 IN ID 28480 2190 0008 2360 0113 2 SCREW MACH 6 32 254N LG PAN HD POZ 00000 ORDER BY DESCRIPTION 401 1854 0210 5 4 TRANSISTOR NPN 212222 Si TO 18 PD SOOMW 04713 2N2222 402 1854 0071 7 TRANSISTOR NPN Si 300MW FT 200MHZ 28480 18540071 403 1853 0020 4 23 TRANSISTOR PNP SI PD 300MW FT 150 2 28480 1853 0020 4 18530020 4 TRANSISTOR 300MW FT 150MHZ 28480 1853 0020 405 1854 0071 7 TRANSISTOR NPN SI PD 300MW 200MHZ 28480 1854 0071 theter te 7 itormiation 24 fected Coriponenr 4 Peler te Section 74 Parea pan Bange 6 22 rev 16JUL9O Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part Designation Number D Qty Description Code Mfr Part Number A406 1853 0007 7 TRANSISTOR PNP 2N3251 SI 18 PD 360MW 04713 2N3251 A407 1853 0020 4 TRANSISTOR PNP PD 300MW 150MHZ 28480 1853 0020 1853 0020 4 TRANSISTOR PNP SI PD 300MW FT 150MHZ 28480 1853 0020 A4Q9 1854 0071 7 TRANSISTOR NPN S a 300MW FT 200MHZ 28480 1854 0071 4010 1853 0020 4 TRANSISTOR PNP 61 PD 300MW 150MHZ 28480 1853 0020 A4Q11 1858 0032 8 5 TRANSISTOR ARRAY 14 PIN PLSTC
398. Table 6 3 Replaceable Parts Reference HP Part Q 5 Mfr ty Description Mfr Part Number Designation Number D d 24 08901 60021 3 1 HIGH FREQUENCY VCO ASSEMBLY 28480 08901 60021 A24C 0160 0571 0 CAPACITOR FXD 470PF 20 100VDC CER 28480 0160 0571 A24C2 0160 3877 5 CAPACITOR FXD 100PF 20 200VDC CER 28480 0160 3877 A24C3 0160 0575 4 12 CAPACITOR FXD 047UF 20 SOVDC CER 28480 0160 0575 24 4 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A24C5 0160 3878 6 CAPACITOR FXD 1000PF 4 2096 100VDC CER 28480 0160 3878 24 6 0160 0575 4 CAPACITOR FXD 047UF 20 50VDC CER 28480 0160 0575 24 7 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC 56289 1500156 9020 2 24 8 0180 1746 5 CAPACITOR FXD 15UF 10 20VDC TA 56289 1500156 902082 24 9 0160 0573 2 1 CAPACITOR FXD 4700PF 20 100VDC CER 28480 0160 0573 24 10 0160 3402 2 CAPACITOR FXD 1UF 5 50VDC MET POLYC 28480 0160 3402 24 11 0180 0229 7 CAPACITOR FXD 33UF 10 10VDC 56289 150D336X9010B2 A24C122 0160 5951 0 1 CAPACITOR FXD 390PF 5 50VDC CER 0 30 28480 0160 595 A24C13 0160 3879 7 CAPACITOR FXD 01UF 20 100VDC CER 28480 0160 3879 A24C14 0160 5034 0 1 CAPACITOR FXD 120PF 2 5 CER 0 30 95275 VJOBOSA121GH A24C15 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 24 16 ASSIGNED 24 17 0160 4519 4 1 CAPACITOR FXD 9 1PF 5PF 200VDC CER 28480 0160 4519 24 18 0160 4103 2 1 CAPACITO
399. The number of periods is counted by the Microprocessor via the Counter Output and Time Base Gate Controller Assembly A13 80 48 The Controller consists of the Central Processing Unit CPU Static Memory Interface SMI Read Only Memory ROM CPU External Register or random access memory RAM Memory Select Decoders and input output interface circuitry The CPU and SMI form the Microprocessor When the Controller interfaces with the HP IB via the Al4 Remote Interface Assembly the Microprocessor also includes the Peripheral Input Output PIO in 14 The Controller s program is stored in ROM To retrieve information from ROM the SMI under control of the CPU outputs the appropriate address on the Address Bus Two of the sixteen address bits are decoded by the Memory Select Decoders to enable one of the ROMs The fourteen other address bits address the individual ROMs The enabled ROM then outputs eight bits of data onto the Data Bus from the location corresponding to the input address ROM information may be either a program instruction or data In a similar manner temporary information is written to or read from RAM The RAM is addressed by eight of the eleven address bits it inputs or outputs eight data bits The RAM is non volatile that is it is not erased when the instrument is powered down or unplugged When either the 12V or 5V Power Supply voltage drops the 12V and 5V Power Supply Drop Detector disables the RAM which
400. ULATOR BETWEEN MP6 AND B1 NOT SHOWN Figure 6 1 Cabinet Parts MP3 Model 8901B MP71 RFI STRIP ATTACHES Fert d 6 UL90 Replaceable Parts Model 8901B HSN 6M O d ef ees 2 99 Sl ttd ees Figure 6 2 Exploded View of the Front Panel 6 181 rec 16 1 90 Model 8901B Replaceable Parts N334138 33896 138 LY 40 01 0131 HOLVINSNI 8 14610 2 NOLLVWHOJNI 1712345 CEdMW 100 01140 1939 3 NOIIVWHOANI ONILVH3d0 ef 100 01140 1d39X3 6CdWLV V of Spd WL O dWIV LedWiv SzdWiV CEdWIV 15 100 01140 1d32X3 9LdWL V Cdi vM 4 1d39X3 GLdWLV alway aie gdWiV 6ldWiV ZedWiv 9cdWiv OldWLY 6EdWLY 9GdW V 82417 ZLdWiV gLdLV Led MOGNIM 13NVd MOGNIM LY 0 3903 401 04 GALNNOW 0131 8 19510 OL ObdW 9113 MOGNIM PEJN E SS Figure 6 8 Parts Identification Front View ou D PEN OG TULL tes 1024
401. VDC TA CAPACITOR FXD 15UF 10 80VDC POLYE CAPACITOR FXD 100PF SPF 200VDC CER CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 0470 20 50VDC CER CAPACITOR FXD 8200PF 5 50VDC CER CAPACITOR EXD 15UF 10 80VDC POLYE CAPACITOR FXD 100PF 5 200VOC CER CAPACITOR FXD 8200PF 5 50 0 CER CAPACITOR FXD 15UF 10 80VDC POLYE CAPACITOR FXD 100PF SPF 200VDC CER CAPACITOR FXD 15UF 10 20VDC CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 4700PF 10 200VDC POLYE CAPACITOR FXD 33UF 10 35 TA 100PF 5 200VDC CER CAPACITOR FXD 100PF 5 200VDC CER CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 047UF 20 50VDC CER CAPACITOR FXD 039UF 5 100VDC CAPACITOR FXD 039UF 5 100VDC CAPACITOR FXD 15UF 10 20VDC TA CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 10 20 100VDC CER CAPACITOR FXD 2 2UF 5 50VDC MET POLYC CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 47UF 5 100VOC CAPACITOR FXD 010 20 100VDC CER Mfr Code 28480 56289 56289 56289 56289 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28460 28480 28480 28480 28480 28480 28480 28480 28480 56283 28480 28480 28480 56289 28
402. Vp p volts peak to peak VIMS 2 ces volts rms VSWR voltage standing wave ratio 22205924 voltage tune oscillator VTVM vacuum tube voitmeter MX volts switched Moers dirt b edid es watt WT ios ad rare nd with WIV working inverse voltage WW wirewound WIO iig ire sh Nea without yttrium iron garnet characteristic impedance ___ _ SS SS ee RN Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Part inti Mfr Designation Number D Description Code Mir Part Number A1 A1 08901 60143 0 1 KEYBOARD AND DISPLAY ASSEMBLY 28480 08901 60143 A1C1 0180 0228 6 5 CAPACITOR FXD 22UF 10 15VDC TA 56289 150D226X8015B2 A1C2 0160 2291 5 1 CAPACITOR FXD 18UF 10 80VDC POLYE 28480 0160 2291 A1C3 0160 0576 5 44 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 1 4 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A1C5 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 1 6 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 1 7 0160 0576 5 CAPACITOR FXD 1UF 20 SOVDC CER 28480 0160 0576 1 8 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 AICS 0160 0576 5 CAPACITOF FXD 1UF 20 50VDC CER 28480 0160 0576 A1C10 0160 0576 5 CAPACITOR FXD 1UF 20 50 CER 28480 0160 0576 A1C11 0160 0576 5 CAPACITOR FXD 1UF 20 50VDC CER 28480 0160 0576 A1C12 0160 0576 5 CAPACITOR
403. W TC 0 100 28480 0698 3457 A2R17 0698 7260 7 17 RESISTOR 10K 1 05W F TC 20 100 24546 C3 1 8 T0 1002 F A2R16 NOT ASSIGNED A2R19 0698 8823 0 1 RESISTOR 8 25 196 125W TC 0 100 28480 0698 8823 A2R20 0698 3451 9 RESISTOR 133K 1 125W TC 0 100 24546 C4 1 8 TO 1333 F A2R21 NOT ASSIGNED A2R22 0688 6414 1 5 RESISTOR 1K 1 TC 204 5 28480 0698 6414 A2R23 0699 0176 2 1 RESISTOR 415 196 AW TC 04 15 28480 0699 0176 A2R24 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 T0 316R F A2R25 NOT ASSIGNED A2R26 0757 0280 3 91 RESISTOR 1 125W TC 0 100 24546 C4 1 8 TO 1001 F A2R27 0698 8475 8 3 RESISTOR 1 799K 1 1W F TC 0 5 28480 0698 8475 A2R28 0698 3430 5 10 RESISTOR 21 5 1 125W TC 04 100 03888 PME55 1 8 TO 21R5 F A2R29 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 4 1 8 0 1001 A2R30 0698 8556 6 RESISTOR 1 62K 196 125W TC 0 10 28480 0698 8556 A2R31 0699 0161 5 1 RESISTOR 580 1 1W F TC 204 15 28480 0699 0161 A2R32 0699 0143 3 2 RESISTOR 825 1 1W 0 15 28480 0699 0143 2933 0757 0394 0 18 RESISTOR 51 1 1 125W TC 0 100 24546 C4 1 8 T0 51R1 F A2R34 0757 0180 2 1 RESISTOR 31 6 1 125W TC 0 100 28480 0757 0180 A2R35 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 1001 F A2R36 0698 8475 8 RESISTOR 1 799K 1 1W F TC 04 5 28480 0698 8475 A2R37 0699 0144 4 RESISTOR 10K 01 TC 04 5 28480 0699 0144 A2R38 0699 0
404. W TC 04 100 24546 4 1 8 0 1001 A13R3 1810 0206 8 NETWORK RES 8 SIP10 0K OHM X 7 01121 208A103 A13R4 18100206 8 NETWORK RES 8 SIP10 0K OHM X 7 01121 208A103 1385 1810 0206 8 NETWORK RES 8 SIP10 0K OHM X 7 01121 208A103 1386 0598 3156 2 RESISTOR 14 7K 1 125W 0 100 24546 CA 1 8 TO 1472 F At3R7 07570279 0 RESISTOR 3 16K 1 125W 0 100 24 546 C4 1 8 T0 3161 F A13R8 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 TO 101 F A13RS 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 C4 1 8 T0 1002 F 13910 0757 0419 0 RESISTOR 681 1 125 TC 0 100 24546 C4 1 8 T0 68 1R F 2314A 2544A 13 11 0698 3454 3 RESISTOR 215K 1 125W TC 0 100 24546 CA 118 T0 2153 F 2550A TO 2718 18 11 0757 0458 7 RESISTOR 5 11K 1 125W 0 100 24546 CA 1 8 TO 5111 F A13R12 2100 2522 1 RESISTOR TRMR 10K 10 C SIDE ADJ 30983 ETSOX103 A13R13 0698 6624 5 RESISTOR 2K 1 125W TC 20 25 28480 0698 6624 A13R14 0698 8827 4 RESISTOR 1M 196 125W TC 0 100 28480 0698 8827 A13R15 0698 6624 5 RESISTOR 2K 1 125W 0 25 28480 0698 5624 13816 0698 6624 5 RESISTOR 2 1 125W 0 25 28480 0698 6624 A13R17 0757 0442 9 RESISTOR 10K 1 125W 0 100 24546 C4 1 8 T0 1002 F A13R18 0698 6360 6 RESISTOR 10K 1 125W TC 0 25 28480 0698 6360 A13R19 0698 6348 0 RESISTOR 1 125W F TC 0 25 28480 0698 6348 A13R20 0757 0442 9 R
405. W F TC 0 100 onde ts do fias tbe onn b ye dee dente ft begeer Mew 94171 8N171 28480 02114 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28489 28480 28485 28480 28480 28489 28480 28480 28480 28480 00002 28480 28480 04713 04713 28480 04713 28480 04713 28480 04713 04713 04733 28480 04713 04713 24546 24546 24546 28480 28480 184150 1 4150 5082 4550 56 590 65 38 PARYLENE 1250 1425 1250 1220 2190 0124 2950 0078 1250 1220 2190 0124 2950 0078 1250 1425 9100 3922 9100 3922 9100 3922 9109 3922 9100 5534 9100 3313 9700 1625 9140 084 9100 1626 9140 0841 9140 0303 9140 0454 08902 00026 ORDER BY DESCRIPTION 5001 0176 0363 0159 2N2907A 2 2995 1854 0404 MRF58 18530020 1854 1032 1853 0020 2N2907A 2N2907A 2N2905A 1854 0610 MHOS001 2N2907A 4 3 8 70 1002 4 1 8 10 5621 C4 1 8 T0 422 4 F 0698 8821 0598 8821 om oN eis OO ee 2 2 Replaceable Parts Reference Designation 17 A17R6 17 7 A17R8 A17R9 A17R10 AY7R 11 A17R12 17 13 4 A17R15 A 17R16 17 17 17 18 17 19 17 29 A17R21 A17R22 A17R23 A17R24 17 25 A17R26 A17R27 Ai7R28 17829 A17R30 A17R31 A17R32 A17R33 17 34 17835 A17R36 A17R37 A17R38 A17R39 A17R C A17P41 A17R42 Ai7R4
406. Y 28480 08901 00107 0510 1148 2 3 RETAINER PUSH ON KB TO SHFT EXT 28480 0510 1148 2914A TO 3019A 4 08901 00200 4 1 FRONT PANEL EXCEPT OPT 001 28480 08901 00200 MP14 08901 00201 5 1 FRONT PANEL OPT 001 ONLY 28480 08901 00201 0510 1148 3 RETAINER PUSH ON KB TO SHFT EXT 28480 0510 1148 3026A AND ABOVE MP14 08901 00200 4 1 FRONT PANEL 28480 08901 00200 6960 0150 3 3 HOLE PLUG 500D 28480 6960 0150 6960 0148 9 1 HOLE PLUG 688D 28480 6960 0148 6960 0154 7 1 HOLE PLUG 812D 28480 6960 0154 2314 TO 2912A 15 08901 00100 3 1 FRONT SUB PANEL 28480 08901 00100 5040 6928 4 STRIP DIVIDER 28480 5040 6928 2190 0003 e 7 WASHER LK HLCL NO 4 315 IN ID 28480 2190 0003 2200 0149 6 n SCREW MACH 4 40 6254N LG PAN HD POZI 00000 ORDER BY DESCRIPTION 3050 0105 6 7 WASHER FL MTLC NO 4 125 IN ID 28480 3050 0105 5040 6888 5 4 LIGHT PIPES 28480 5040 6888 2914A ONLY 15 08901 00209 3 1 FRONT SUB PANEL 28480 08901 00209 5040 6928 4 STRIP DIVIDER 28480 5040 6928 2190 0003 8 7 WASHER LK HLCL NO 4 1154410 28480 2190 0003 2200 0149 6 11 SCREW MACH 4 40 625 IN LG PAN HO POZI 00000 ORDER BY DESCRIPTION 3050 0105 6 7 WASHER FL MTLC NO 4 125 IN ID 28480 3050 0105 5040 6888 5 4 LIGHT PIPES 28480 5040 6888 2920 AND ABOVE MP 5i 08901 00209 3 1 FRONT SUB PANEL 28480 08901 00209 2190 0003 8 7 WASHER LK HLCL NO 4 1154 40 28480 2190 0003 2200 0149 6 13 SCREW MACH 4 40 625 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION 3050 0105 6 7 WASHER FL MTLC NO 4 12
407. Z 28480 9100 3922 A20L3 9100 3922 4 INDUCTOR FIXED 120 1300 H2 28480 9100 3922 A20MP 1 08901 00104 7 1 CVR LO CONT BD 28480 08901 00104 2360 0113 2 2 SCREW MACH 6 32 25 IN LG 00000 ORDER BY DESCRIPTION 2001 1854 0477 7 5 TRANSISTOR NPN 2N2222A 1 18 PD SOOMW 04713 2 2222 2002 1853 0034 0 3 TRANSISTOR PNP SI TO 18 PD 360MW 28480 1853 0034 A2003 1854 0477 7 TRANSISTOR NPN 2N2222A SI TO 18 PD 500MW 04713 2N2222A A2004 1853 0034 0 TRANSISTOR PNP SI 18 PD 360MW 28480 1853 0034 2005 1854 0378 7 1 TRANSISTOR NPN 2 5109 SI TO 39 PD 800MW 3L585 2 5109 2006 1854 0477 7 TRANSISTOR NPN 2N2222A Si TO 18 PD 500MW 04713 2N2222A 2007 1853 0034 9 TRANSISTOR PNP SI TO 18 PD 360MW 28480 1853 0034 2008 1853 0594 7 3 TRANSISTOR DUAL PNP 2N3808 TO 78 28480 1853 0594 2009 1855 0292 6 2 TRANSISTOR J FET 2N5432 17856 2N5432 A20Q10 1855 0292 6 TRANSISTOR J FET 2N5432 N CHAN D MODE 17856 2N5432 A20Q11 1855 0423 5 1 TRANSISTOR MOSFEY N CHAN E MODE 17856 VN10KM A20Q12 1854 0813 5 3 TRANSISTOR NPN 2N3501S SI TO 39 PD 1W 28480 1854 0813 A20Q13 1853 0462 8 e TRANSISTOR PNP 2N3635 SI 39 PD 1W 28480 1853 0462 A20Q14 NOT ASSIGNED A20Q15 NOT ASSIGNED 20016 1854 0477 7 TRANSISTOR NPN 2N2222A SI TO 18 PD SOOMW 04713 2 2222 20017 NOT ASSIGNEO 20018 NOT ASSIGEND 20019 1853 0594 7 TRANSISTOR DUAL PNP 2N3808 78 28480 1853 0594 A20Q20 1854 0474 4 3 TRANSISTOR NPN SI PD 310MW
408. ZNR 34 8V 5 DO 35 PD 4W DIODE ZNR 2 4V 5 DO 35 PD 4W TC 037 DIODE ZNR 2 4V 5 DO 35 4W 037 Mfr Code 28480 28480 28480 28480 28480 28480 28480 Factory Selected Component Refer to Section 5 Replaceable Parts Mfr Part Number 1902 3182 1902 3333 1902 0952 1902 0952 1902 3301 1902 0943 1902 0943 A Errata part change 6 43 Model 8901B Reference Designation 11 2314A 2635A All All 2636A AND ABOVE All All 11 1 11 2 A11C3 11 4 11 5 11 6 11 7 A11C8 A11C9 A11C10 A11C11 11 12 A11C13 A11C14 A11C15 A11C16 A11C17 A11C18 A11C19 A11C20 A11C21 A11C22 A11C23 A11C24 A11C25 A11C26 A11C27 A11C28 A11C29 A11C30 A11CR1 A11CR2 A11CR3 A11CR A11CR5 HP Part Number 08901 60093 08901 60018 08902 60107 08902 60106 0160 2055 0180 0229 0160 2055 0160 2055 0160 2055 0160 2055 0180 0197 0180 0197 0180 0197 0160 2055 0160 2055 0160 2055 0160 2055 0121 0105 0160 0161 0160 2055 0160 0572 0160 2055 0160 2055 0160 3874 0160 2055 0180 0197 0160 2055 0160 0570 0160 3879 0140 0198 0160 3875 0140 0198 0160 0939 0160 2055 1901 0179 1901 0179 1901 0535 1901 0535 1901 0535 ohn fw IO o o 5 BO oO co oo on Qty 10 18 tRefer to Section 7 for update information rev O1FEB92 Table 6 3 Replaceable P
409. aceable Parts Model 8901B Table 6 3 Replaceable Parts fetu e tHe tie 6 80 gt upela li ties tien t CC nne porter nt 2 ts Reference HP Part C inti Mfr Designation Number Qty Description Code Mfr Part Number A19 08901 60024 08901 60274 SERIAL PREFIX 2314A TO 2806A 2314A TO 2619A A19MP 08901 00028 4 1 COVER LO DIVDR 28480 08901 00028 2360 0113 2 SCREW MACH 6 32 25 IN LG PAN HD POZI 28480 ORDER BY DESCRIPTION 2314A TO 2806A 19 1 08801 00166 1 COVER LO DIVDER 28480 08901 00166 2360 0113 2 SCREW MACH 6 32 25 IN LG PAN HD POZI 28480 ORDER BY DESCRIPTION 2360 0113 2 SCREW MACH 6 32 25 IN LG PAN HD POZI 00000 ORDER BY DESCRIPTION A19MP2 5001 0176 0 GROUND STRAP 28480 5001 0176 A19MP3 5001 0176 0 GROUND STRAP 28480 5001 0176 A19MP4 08662 0004 1 1 1 SHIELD COMPONENT LGE 28480 08662 00041 9 5 08662 00039 7 1 SHIELD LGE 28480 08662 00039 A19Q1 1854 0477 7 TRANSISTOR NPN 2N2222A 1 TO 18 PD 500MW 04713 2N2222A 1902 1853 0020 4 TRANSISTOR SI PD 300MW 150MHZ 28480 1853 0020 A1903 1853 0020 4 TRANSISTOR PNP SI PD 300MW 150MHZ 28480 1853 0020 A1904 1858 0032 8 TRANSISTOR ARRAY 14 PIN PLSTC DIP 31 585 146 A19R1 0698 7236 7 RESISTOR 1K 1 05W TC 0 100 24546 C3 1 8 T0 1001 F A19R2 0698 7227 6 4 RESISTOR 422 1 05W TC 04 100 24546 C3 1 8 TO 422R F A19R3 0698 7227 6 RESISTOR 422 1 05W
410. ails see Service Sheet 2 and check the Zeroing DAC If the Range to Range Error test fails see Service Sheets 1 and 2 and check the Attenuators Amplifiers Synchronous Detector and Noise Filter If the Accuracy within a Range test fails see Service Sheet 1 and check the Synchronous Detector Power Reference Oscillator Check 1 Perform Performance Test 6 or 7 Power Reference in Section 4 Either of the two procedures can be followed If faulty see Service Sheet 3 Sensor Module Switch Control Check 1 With no power sensor or sensor module connected to the SENSOR connector connect a high impedance dc coupled oscilloscope to pin A of the SENSOR connector See Service Sheet 1 for the location of pin A 2 Set the oscilloscope sweep to 20 ms per division and vertical sensitivity to 10V per division 3 Alternately press RF POWER and FREQ Each time a new key is pressed the signal on the oscilloscope display should drop to 15V for approximately 30 ms then return to OV If faulty see Service Sheet 2 and check the Sensor Module Switch Control 4 Connect an ohmmeter to pin B of the SENSOR connector Press FREQ then press RF POWER The resistance should be less than 50 for each setting If faulty see Service Sheet 2 and check the Sensor Module Switch Control Service Sheet BD2 8D 23 Model 8901B Service BLOCK Service Sheet BD3 IF PRINCIPLES OF OPERATION General The IF Block Diagram documents the circuits t
411. all outputs When inactive open collector and open emitter outputs are off and three state out puts are at an external high impedance state When the enable input affects only certain inputs and outputs they will be numbered to indicate the logic connection Xm Transmission Dependency Binary affecting input which bidirectionally connects de pendent inputs and outputs Mm Mode Dependency Binary affecting input used to indicate that the effects of partic ular inputs and outputs of an element depend on the mode in which the element is operating The m is replaced with a number or letter the identifier Zm Interconnection Dependency lIndicates the existence of internal logic connections between inputs outputs internal inputs and or internal outputs The m is replaced with a number the identifier i Comma AND Function Slant OR Function NOTE The identifier m is omitted if it is one that is when there is only one depen dency relationship of that kind in a particular device When this is done the de pendency indicator itself G C EN or V is used to prefix or suffix the affected dependent input or output 8A 16 Model 8901B Service Table 8A 6 Schematic Diagram Notes 8 of 11 DIGITAL SYMBOLOGY REFERENCE INFORMATION Miscellaneous Schmitt Trigger input characterized by hysteresis one threshold for positive going signals and a second threshold for negative going signals Active State
412. alyzer 49 N Display Internal Voltages The Voltmeter measures and displays the internal voltage in volts selected by N This special function also controls the rear panel RECORDER output as explained in the following note N 0 Ground See Service Sheet 15 N 1 Peak Detector Ground See Service Sheet 4 N 2 Peak Detector 3 See Service Sheets 4 and 15 Peak Detector See Service Sheet 4 N24 x10 AM Calibrator See Service Sheet 30 5 1 Calibrator See Service Sheet 30 N Audio Range Detector See Service Sheet 18 N 7 RMS to DC Converter See Service Sheet 16 N 8 Ground See Service Sheet 15 N Audio Average Detector See Service Sheet 14 N A Audio Peak Detector See Service Sheet 14 IF Average Detector See Service Sheet 8 N IF RMS Detector Option Series 030 2314A and Above See Service Sheet 34 N D IF Peak Detector See Service Sheet 9 Current See Service Sheet 8 RF Average Power or Sensor Identifier To read average power precede with Special Function 0 212 To read sensor identifier precede with Special Function 0 211 See Service Sheet 2 Special Functions 8B 7 Service 8B 8 Model 8901B NOTE The suffix N can also be two digits XY The displayed result is equivalent to the display of 49 X SPCL minus the display of 49 Y SPCL For example 49 3 SPCL or 49 30 SPCL gives a display of the level from the RF Peak Detector with respect
413. and RAM The CPU also contains bidirectional input output 1 0 ports to communicate with the instrument s hardware via the Instrument Bus Four I O bits are reserved for servicing of the Controller Four LEDs driven from the port indicate errors encountered during power up verification tests measurement cycles and Keyboard and HP IB interrupts Four test points on the port can be used to initiate troubleshooting routines which use signature analysis See Controller Test LEDs and Test Points paragraph 8 10 Service Sheet BD5 Model 8901B Service 0 13 CONTROLLER ASSEMBLY P O AUDIO DE EMPHASIS AND OUTPUT ASSEMBLY P OUS CPU ENABLE DECODER INSTRUMENT BUS TO RF amp AUDIO SECTIONS TO AUDIO SECTION TO AUDIO SECTION TO DIGITAL SECTION TO REMOTE INTERFACE TO KEYBOARD ANO DISPLAY 1 01 nP iH 2 TO OTHER SECTIONS sO HIGH PASS FILTER CONTROL d H 0 50 Hz HPF L 02 0 92 iHi 1 vo 07b 93 1 gt HJ i 0 PRE DISP ON L TE c H gt ms em aS ee ee ee D E PRE DISP OFF 1 Figure 8D 7 Example Showing Instrument Bus Hookup Instrument Bus Figure 8D 7 shows a typical hookup on the Instrument Bus The Instrument Bus lines are broken down into three groups enable select s and data d The enable code 0 to e3 comes from I O lines 10 through 13
414. approximately sinusoidal with an ac amplitude of 35 to 45 mVpp If faulty see Service Sheet 30 and check the RF path beginning at the input of the FM Calibrator Key in 13 0 This causes the display to show the AM depth The display should show between 33 0 and 33 7 If faulty see Service Sheet 30 and begin by checking the Modulators Press AM then CALIBRATE The waveform should show the carrier with AM The AM envelope should be a rounded squarewave with a period of 90 to 110 The amplitude of the peak should be twice that of the trough If faulty see Service Sheet 30 and check the 10 kHz Modulation Oscillator Service Sheet BD3 8D 31 Service Mode 8901B Channel Filter Check Option Series 030 2314A to 2636A 1 Set the signal generator or audio synthesizer to between 454 and 456 kHz CW at 10 dBm 70 7 mVrms into 500 Connect its RF output to 5542 IF IN on the Modulation Analyzer 2 Connect a high impedance ac coupled oscilloscope to A55J1 IF OUT 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 0 2D0 SPCL to switch in the Channel Output Attenuator and select channel 1 Fine tune the signal source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between 640 and 1000 mVpp If faulty see Service Sheet
415. arts Description COUNTER ASSEMBLY EXCEPT OPTION 002 COUNTER ASSEMBLY OPTION 002 ONLY COUNTER ASSEMBLY EXCEPT OPTION 002 COUNTER ASSEMBLY OPTION 002 ONLY CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 33UF 10 10VDC TA CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOF FXD 2 2UF 10 20VDC CAPACITOR FXD 2 2UF 1096 20VDC TA CAPACITOR FXD 2 2UF 10 20VDC TA CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 80 2096 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR V TRMR CER 9 35PF 200V PC MTG CAPACITOR FXD 01UF 10 200VDC POLYE CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 2200PF 20 100VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 01UF 4 80 2096 100VDC CER CAPACITOR FXD 10PF 5 200VDC CER CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 2 2UF 1096 20VDC CAPACITOR FXD 01UF 80 20 100VDC CER CAPACITOR FXD 220PF 20 100VDC CER CAPACITOR FXD 01UF 20 100VDC CER CAPACITOR FXD 200PF 5 300VDC MICA CAPACITOR FXD 22PF 5 200VDC CER 0 30 CAPACITOR FXD 200PF 5 300VDC MICA CAPACITOR FXD 430PF 5 300VDC CAPACITOR FXD 01UF 80 20 100VDC CER DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SWITCHING 15V 50MA 750PS DO 7 DIODE SM SIG SCHOTTKY DIODE SM SI
416. asurement bandwidth is the series combination of the First Channel Filters and the Second Channel Filters in the A54 IF Amplifier Detector Assembly Each channel has an input channel buffer 0 dB gain and an output channel amplifier 6 dB gain The channel output has a selectable gain of 0 or 20 dB the Channel Output Attenuator followed by the Channel Output Amplifier IF Amplifier Detector Assembly A54 or A71 Option Series 030 The 455 kHz IF signal from the A55 A72 Channel Filter Assembly is further amplified and filtered by the A54 A71 IF Amplifier Detector Assembly which also converts the IF level to a dc voltage which is then measured by the Voltmeter The IF gain is determined by the combination of selectable Attenuators 1 through 4 and fixed gain Amplifiers 1 through 3 Attenuators 1 through 3 have 0 and 20 dB steps Attenuator 4 has 5 dB steps from 0 to 15 dB The Second Channel 1 Filter is always a 33 kHz wide bandpass filter It is selected by Special Functions 24 1 24 2 24 3 or 24 4 The Second Channel 2 Filter is always a 2 5 kHz wide bandpass filter and has the same nominal bandwidth as the Option 037 filter in the A55 Channel Filter Assembly It is selected by Special Function 24 5 or 24 6 for SSB noise measurements The Channel Output Amplifier has 33 dB gain The IF RMS Detector converts the 455 kHz level to its dc rms level equivalent Service Sheet BD3 8D 25 ee ii 1 1 5 32 2 5 05 70
417. base color second number identifies the wider stripe and the third number identifies the narrower stripe e g denotes white base yellow wide stripe violet narrow stripe 1 direct conducting connection to earth or a conducting connection to a structure that has a similar function e g the frame of an air sea or land vehicle A conducting connection to a chassis or frame Common connections All like designation points are connected 2 Letter off page connection Number Service Sheet number for off page connection In the example signal flow is continued on Service Sheet 12 at the point marked C2 PAGE Number only on page connection 8 11 Service Model 8901B Table 8 6 Schematic Diagram Notes 3 of 11 Indicates multiple paths represented by only one line Letters or names identify indi a B vidual paths Numbers indicate number of paths represented by the line 2 M Coaxial or shielded cable Ferrite bead Increases the self inductance of the conductor passing through the bead Relay Contact moves in direction of arrow when energized d Indicates a pushbutton switch with a momentary ON position Feedthrough capacitor Acts as a feedthrough terminal when mounted on a chassis or a frame Indicates a PIN diode Indicates a current regulation diode Indicates a capacitive varactor diode Indicates a Schottky hot carrier diode Light emitting
418. ble click If faulty see Service Sheet 33 and check the LO Input Switch 54 Control IF Amplifier Detector Check Option Series 030 2314A to 2636A 1 Set the signal generator or audio synthesizer to between 454 and 456 kHz CW at 70 dBm 70 7 p Vrms into 500 Connect its RF output to A54J2 IF IN on the Modulation Analyzer 2 Connect a high impedance ac coupled oscilloscope to A54J1 TEST JACK 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 0 577 SPCL and 0 2E7 SPCL to switch in maximum IF gain and select the Second Channel 1 Filter Fine tune the signal source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between 1 and 2 Vpp If fauity see Service Sheet 7 and check the circuits of channel 1 4 Key in 50 6 SPCL to read the IF with the IF RMS Detector Calculate reading of step 3 x 1 63 The Modulation Analyzer s display should read within 10 of the calculated value If faulty see Service Sheet 7 and check the IF RMS Detector 5 Set the signal source level for a Modulation Analyzer display of 2 00 6 Key in the Direct Control Special Functions listed in Table 8 13 followed each time by 50 6 SPCL For each setting the Modulation Analyzer s display should be as indicated If faulty see Service Sheet 7 and check the co
419. ch Reduce the amplitude of the signal from the synthesizer by 10 that is 20 dB Key in 2 4 SPCL to bypass the 20 dB attenuator The amplitude of the displayed audio signal should be between 2 8 and 3 2 Vpp If faulty see Service Sheet 16 and check Amplifier 1 DC couple the oscilloscope and connect it to A52 TP1 RMS OUT The oscilloscope should display a voltage between 0 9 and 1 2 Vdc If faulty see Service Sheet 16 and check the RMS to DC Converter and the Ripple Filter AC couple the oscilloscope and connect it to A52TP3 NOTCH FLTR Key in 0 2 S Shift 0 S 4 SPCL to keep the Notch Select Switch in the through position keep the gain of Amplifier lat 20 dB switch in the 400 Hz Notch Filter and set the gain of Amplifier 2 to 20 dB The amplitude of the displayed audio signal should be between 2 7 and 3 3 Vpp If faulty see Service Sheet 16 and check the Notch Filters and Amplifier 2 Key in 0 2 S 0 S 0 SPCL to reduce the gain of Amplifier 2 by 20 dB The amplitude of the displayed audio signal should be between 270 and 330 mVpp If faulty see Service Sheet 16 and check Amplifier 2 Key in 0 2 S 0 6 SPCL to switch in the 1 kHz Notch Filter and increase the gain of Amplifier 2 by 20 dB The 1 kHz audio signal should disappear into the noise If faulty see Service Sheet 16 and check the Notch Filter Set the synthesizer frequency to 400 Hz Key in 0 2 5 0 5 4 SPCL to insert the 400 Hz Notch Filter The 400 Hz a
420. ckup to the RAM devices makes the memory non volatile that is the instrument remembers key values even with the power switched off The Remote Interface receives inputs from the external interface bus HP IB processes the information and interrupts the Controller in a manner similar to the Keyboard The Remote Interface also processes the measurement information and outputs it on the HP IB if requested and is designed to make operation from an external computing controller as similar as possible to operation from the front panel Service Sheet BD1 8 9 Service Model 8901B Instrument Software Supervisor Flowchart The instrument s software is structured in a form called the supervisor See Figure 8D 5 It is a loop that is continuously traversed with measurements made near the end after checks for proper frequency tuning proper RF and IF level and correct audio range Arithmetic manipulation for example for the ratio function follows the measurement and the program then loops back up to the display The frequency level and audio blocks verify that the instrument is adjusted to make an accurate measurement measurement is not made until all of the tests are passed in immediate succession If a test is not passed corrective action is taken The decision after that block forces the program back to the top of the supervisor bypassing the measurement for that loop The software interface with the hardware makes use of two concep
421. cted by the presence of an input signal Any other sequence indicates a failure of the check Passing this check indicates that the Controller is functioning properly and that there is no catastrophic failure in the following circuits Read Only Memory Random Access Memory Instrument Bus Local Oscillator tuning only Keyboard only that no key is down If Indication Abnormal If the TEST LEDs come on and remain in the random state of step 1 above unplug the A14 Remote Interface Assembly and try again If still faulty check the Controller Kernel See Service Sheet BD5 If other indications appear in or after step 2 above consult Power Up Checks paragraph 8 9 which discusses the individual checks documents the error indications and cross references to the service sheets 8D 12 Service Sheet BD1 Model 8901 Service 73 Front Panel LED Check Procedure Disconnect any connection to the INPUT connector Switch POWER to STBY and back to ON Normal Indication After less than one second all front panel LEDs and display segments and decimal points should light for about 10 seconds The display should blank for one second then show with the MHz annunciator The FREQ key the AUTO TUNING and the FM MODULATION OUTPUT annunciators should all light This indicates that the Controller is able to output to the front panel LED and display latches which are all operative If Indication Abnormal If one or more LEDs
422. cy to 3 kHz Set HP FILTER off and the LP FILTER to 3 kHz The waveform should have an ac amplitude of 1 2 to 1 8 Vpp If faulty see Service Sheet 13 and check the 3 kHz Low Pass Filter Set the LP FILTER off and FM DE EMPHASIS to PRE DISPLAY Set the synthesizer frequency and FM DE EMPHASIS as listed in Table 8D 13 For each setting the ac amplitude of the waveform should be as indicated If faulty see Service Sheet 13 and check the appropriate de emphasis filter Table 80 13 Amplitude at ASTP3 72 Step 8 Synthesizer FM Waveform Amplitude Limits Vpp Frequency DE EMPHASIS Hz us 25 50 75 750 Key in 2 3 SPCL to reduce the gain by 20 dB 2 2 SPCL Switch PRE DISPLAY off The waveform should have an ac amplitude of 1 9 to 2 3 Vpp If faulty see Service Sheet 13 and check the Pre Display Switching Set the synthesizer frequency to 1 kHz Press The waveform should have an ac amplitude of 1 9 to 2 3 Vpp If faulty see Service Sheet 13 and check the Phase Modulation Integrator Press PEAK The waveform should not noticeably change amplitude If faulty see Service Sheet 13 and check the Inverting Non Inverting Amplifier Press FM Switch off all FM DE EMPHASIS Connect the oscilloscope to MODULATION OUTPUT AUDIO INPUT The waveform should have an ac amplitude of 1 9 to 2 3 Vpp If faulty see Service Sheet 13 and check the Output Amplifiers Key in 49 6 SPCL This causes the output of the a
423. d a second verification check is made by the Controller Test 3 Counter Test See Service Sheet 23 Counts the selected Time Base which should be exactly 1000000 If the result is not 1000000 3 will be displayed in digit position 6 Test 4 HF VCO and Divider Output See Service Sheets 17 and 18 Connects the DAC output to the HF VCO and counts the LO frequency to determine if it is within certain limits The Controller turns off the Sweep Up and Sweep Down Current Sources and LF VCXO tune filter allowing the HF VCO to free run The Controller then outputs the approximate center frequency code to the tuning DAC and checks if the HF VCO output is between 250 and 800 MHz If the frequency is not within these limits 4 will be displayed in digit position 8 DAC and HF VCO Range Tests N 2 N 2 Test 5 HF VCO Top of Range Test See Service Sheet 18 Tests the DAC s ability to drive the HF VCO to the top of its frequency range The DAC is programmed to output the highest tune voltage If the HF VCO does not tune to between 655 and 800 MHz 5 will be displayed in digit position 2 Test 6 HF VCO Bottom of Range Test See Service Sheet 18 Tests the DAC s ability to drive the HF VCO to the bottom of its frequency range The DAC is programmed by the Controller to output the lowest tune voltage If the HF VCO does not tune to between 280 and 310 MHz 6 will be displayed in digit position 4 Special Functions 8B 9 Service 8B
424. d by means of Special Function 30 which automatically switches the Input Output Switch to the external audio input position Service Sheet BD4 Model 8901B Service Since the notch filter frequency is fixed at either 1 kHz or 400 Hz the signal being measured should be within 5 of the selected frequency Amplifier 1 and Amplifier 2 which together have an overall gain of 0 20 or 40 dB are programmed to provide an optimum level to the RMS to DC Converter The voltage measured when the Notch Select Switch is set to include the Notch Filters is the numerator in the distortion calculation The voltage measured when the Notch Select Switch is set to bypass the Notch Filters is the denominator in the distortion calculation Since the signal minus its fundamental is often noisy the signal to the Voltmeter is filtered by an active Ripple Filter to smooth the voltage readings Special Function 29 puts the instrument in the SINAD measurement mode The SINAD measurement is the same as the Audio Distortion measurement except that the reciprocal of the distortion measurement is displayed To calculate the frequency of an internal or external audio signal the Controller counts signals from both the Audio Counter and the main Counter on Service Sheet BD5 First the analog audio signal is conditioned by the Schmitt Trigger to make it compatible with the digital circuits that follow To begin the count the Controller resets Counter Stages 1 4 At this ti
425. d to check the progress of a measurement Refer to Table 8B 4 Measurement Progress Error Codes and Figure 8D 5 Modualtion Analyzer Software Supervisor Flow Chart To see if the measurement progresses through a particular segment of the flow chart enable the error code corresponding to the segment in either of the two following ways 1 To cause the measurement to pause momentarily approximately 1 second and display the error code when the segment is encountered and then to continue on key in 43 SPCL where the suffix N is the error code of the segment 2 To cause the measurement to halt and display the error code when the segment is encountered key in 43 N SPCL where is the error code of the segment plus 100 Press CLEAR to exit 83 14 Error Messages Model 8901B Service Table 8 4 Measurement Progress Error Codes Flow Chart Segment Non Measurement Display Measurement Display Set Up Hardware Frequency Tuning Signal Leveling Audio Ranging Measure Manipulate Exit Manipulate Service Error Messages Errors 65 through 89 These Service Error Messages are quite diverse and are enabled in three ways 1 Special Function 43 1 enables the Service Error Messages and allows the AUTOMATIC OPERATION key to clear them 2 Special Function 43 2 enables the Service Error Messages but does not allow AUTOMATIC OPERATION to clear them 3 Special Function 43 N enables the measurement to pause or ha
426. display of 2 00 Key in the Direct Control Special Functions listed in Table 8 13 followed each time by 49 C SPCL For each setting the Measuring Receiver s display should be as indicated If faulty see Service Sheet 34 and check the corresponding attenuator Service Sheet BD3 8D 35 Service 80 296 10 11 12 13 Model 8901B Table 80 13 Attenuation Stepping Step 6 i Direct Control Atiendstor isplay Limits Special Function Minimum Maximum 0 396 0 395 0 393 0 397 0 3EB 0 3ED Key in 0 3 7 SPCL 49 C SPCL Increase the signal source frequency until the display drops to 1 0 Record the signal source s frequency Decrease the signal source frequency until the display rises to 2 0 then drops to 1 0 Note the signal source s frequency The difference between this frequency and the frequency in step 7 should be between 33 and 55 kHz If faulty see Service Sheet 34 and check the Second Channel 1 Filter Key in 0 39F SPCL to select channel 2 Key in 49 C SPCL Set the signal source frequency to 455 kHz then fine tune the source to peak the signal on the Measuring Receiver s display Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The display should read between 1 5 and 2 5 If faulty see Service Sheet 34 and check Second Channel 2 Filter Set the signal source level for a Measuring Receiver display of 2 00 Increase the signal source frequency unt
427. dress Switches to the Instrument Bus data lines when Special Function 21 HP IB Address is selected The Controller reads the HP IB address from the Address Switches See HP IB Address in the Detailed Operating Instructions in the Operation and Calibration Manual The HP IB input output is directly handled by a portion of the Microprocessor that resides in the Remote Interface Assembly the Peripheral Input Output PIO The PIO is a device that routes the HP IB data to and from the CPU and the HP IB It provides a communication link between the CPU and the Remote Interface hardware and provides the means for interrupting the CPU One of the two eight bit PIO output ports connects to the HP IB data lines The other output port connects to the Handshake Logic and Interface Control Logic NOTE For purposes of troubleshooting the Controller the Remote Interface Assembly may be unplugged Provision has been made to allow the instrument to work with only the loss of HP IB operation Although the Remote Interface Assembly receives data and operating information from the PIO it is primarily through the Instrument Bus that it is controlled Commands such as SRQ that need rapid processing come from the PIO A Select Decoder decodes the select lines when enabled by code e 4 The decoded select lines enable or disable parts of the Remote Interface Assembly Special Function 61 provides a means of reading back HP IB status information to the front pane
428. e Phase Modulation Integrator In mathematical terms the instantaneous phase deviation is the integral of the instantaneous frequency deviation Service Sheet BD4 8D 37 Service Model 8901B The audio output path to the Voltmeter A5 is through the Inverting Non Inverting Amplifier The amplifier usually has a gain of 1 but when PEAK is selected for and when the input signal is down converted by the Input Mixer A17 the gain is 1 By using PRE DISPLAY the input to the amplifier can be selected to include the FM de emphasis networks The Absolute Peak Detector the Audio Overvoltage Detector and the Voltmeter together sense the audio signal level to determine the audio range The Audio Overvoltage Detector compares the audio voltage to a reference If the audio level is too high the Audio Overvoltage Detector reacts quickly to set the audio gain to minimum and to set a status flag which can be read by the Controller The output of the Absolute Peak Detector which detects the greater of the positive and negative peaks is read by the Voltmeter If automatic ranging has been selected the Controller reduces the audio gain depending on the following conditions governed by the Controller 1 the magnitude of the positive or negative peak of the audio signal or 2 the voltage read from the Audio Peak Detector of the A5 Voltmeter Assembly Most often the audio autoranging is determined by the voltage read from the Audi
429. e HF VCO has a switchable lead lag network Tune Voltage Filter to reduce phase noise The network is switched out while the LO is tuning and is switched in when tuned LO Divider Assembly A19 The signal from the HF VCO after passing through the LO Divider Assembly is the LO drive to the Input Mixer The LO Divider Assembly has one Doubler stage 640 to 1300 MHz LO range one through path 320 to 640 MHz range and eight LO Dividers 1 25 to 325 MHz ranges Each divider is a high speed divide by two device The Divider Output Gates enable and cascade the appropriate dividers for the range selected The first three dividers are always enabled The 40 to 81 25 MHz output of the third divider is the LO HF 8 input to the Counter 8 13 Service Sheet BD2 Model 89018 Service To prevent mistuning on the doubler range which can result from spurious LO signals the input to the Doubler is filtered by a tunable Doubler Input Filter The filter primarily suppresses the third harmonic of the HF VCO which becomes the 3 harmonic of the doubled signal The Doubler High Pass Filter following the Doubler suppresses feedthrough of the fundamental frequency the 1 harmonic Low Frequency VCXO and Filter Assemblies A22 and 21 The Low Frequency Voltage Controlled Crystal Oscillator VCXO is a highly stable tunable reference oscillator to which the HF VCO is locked in the low noise tune modes It consists of two tunable c
430. e Parts Table 6 3 Replaceable Parts Reference HP Part C Q m Mfr ty Description t Mir Part Number Designation Number D y Code umbe A6RA1 0698 2444 1 RESISTOR 316 1 125W TC O 100 24546 C4 1 8 T0 316R F A6R42 0757 0338 2 RESISTOR 1K 196 25W TC 0 100 24546 5 1 4 1001 A6RA3 NOT ASSIGNED AGR44 0757 0442 9 RESISTOR 10K 1 125W TC 04 100 24546 C4 1 8 T0 1002 F 6 45 NOT ASSIGNED AGR4E 0757 0416 7 RESISTOR 511 1 125W TC 0 100 24546 C4 1 8 T0 51 1R F A6R47 NOT ASSIGNED A6R48 NOT ASSIGNED ASPAS 0757 0401 0 RESISTOR 100 1 125W TC 0 100 24546 C4 1 8 T0 101 F A6R50 0698 3152 8 RESISTOR 3 48 1 125W TC 0 100 24546 4 1 8 0 3481 A6RS1 0698 4488 5 1 RESISTOR 26 7K 1 125W TC 0 100 24546 C4 1 8 T0 2672 F A6R52 0757 0438 3 RESISTOR 5 11K 196 125W TC 404 100 24546 4 1 8 10 5111 A6R53 NOT ASSIGNED A6RS54 0698 4472 7 1 RESISTOR 7 68 1 125W 0 100 24546 4 118 10 7681 6 55 0698 3150 6 RESISTOR 2 37K 1 125W 0 100 24546 4 1 8 0 2371 AGR56 0757 0401 9 RESISTOR 100 1 125W F TC 0 100 24546 C4 1 8 T0 101F A6R57 0757 0438 3 RESISTOR 5 11K 1 125W F TC 0 100 24546 4 1 8 0 5111 6 58 0698 3432 7 RESISTOR 26 1 1 125W 0 190 03888 PMES55 1 8 T0 26A1 F 6 59 ASSIGNED A6R60 0699 0148 8 2 RESISTOR 31 6K 1 1W TC 004 15 28480 0699 0148 A6R61 0757 0200 7 5 RESISTOR 5 62 1 125W F TC 0 100 24546 C
431. e between the HF VCO and the nearest harmonic of the LF VCXO The output of the Sampling Bridge which is the phase error voltage is smoothed and buffered by the Sampler Amplifier The tune voltage for the HF VCO is supplied by the HF VCO Tune Integrator and Amplifier The tune integrator has several sources of input the Sampler Amplifier the Track Loop Amplifier the Sweep Up Current Source the Sweep Down Current Source and the DAC Control Amplifier Only one input is active at a time If one of the sweep current sources is active the tune integrator sweeps the HF VCO If the input is one of the amplifier outputs the HF VCO Tune Integrator and Amplifier is configured as part of a feedback loop The grounding switch at the input of the HF VCO Tune Integrator and Amplifier is open only when the Sampler Amplifier is connected to its input When the amplifier is not connected the switch is closed to keep signals at the Sampler Amplifier output from coupling into the tune integrator The Out of Lock Detector at the Sampler Amplifier output senses the presence of ripple and lights the OUT OF LOCK annunciator to indicate lock has broken A BW Control line also lights the annunciator when the Tune Voltage Filter in the HF VCO Assembly has not been turned on This line also controls the bandwidth of the HF VCO Tune Integrator and Amplifier The bandwidth is narrowed in the low noise phase lock and the track modes that is whenever the instrument is prope
432. el is sensed by the RF Level Detector The output of the detector is buffered by the Detector Amplifier and applied to the Voltmeter The Controller uses the RF Level detector when automatically setting the RF Attenuator and when making RF Level Special Function 35 measurements The RF Level Detector senses the peak of the RF voltage including AM envelope peaks The Overpower Detector compares the detected RF level with a reference If the RF level with AM envelope exceeds 1W the Overpower Protection relay is de activated opened and latched Pressing any key will reset the relay If the instrument is tuned to a frequency greater than 10 MHz the 5 25 MHz High Pass Filter can be switched in to eliminate low frequency signals on the input which can pass directly into the IF Special Function 3 controls the selection of the 5 25 MHz High Pass Filter as well as the IF filter The Input Attenuator consists of one 10 dB pad and two 20 dB pads for a range of 0 to 50 dB The RF path is switched between the thru lines and attenuator pads by RF relays as determined by the Controller Input Mixer Assembly A17 The Input Mixer Assembly converts the RF input signal to the IF Part of the IF filtering is included in this assembly In the automatic tuning mode the Local Oscillator LO is tuned so that the LO frequency minus the signal frequency equals the IF Using manual tuning it is also possible to tune the LO so that the IF responds to the image
433. ement mode the reciprocal of distortion is computed Audio Counter The input to the Audio Counter is selected by the Output Switch As with the Audio Distortion Analyzer the input can be either the internally demodulated RF signal or an audio signal input to the front panel MODULATION OUTPUT AUDIO INPUT connector The audio signal is first conditioned by the Schmitt Trigger to make it compatible with the digital circuits it drives When a frequency count is to be made the Controller after clearing both the Counter and Audio Counter and after opening the Audio Switch arms the Counter Control Logic The first signal pulse from the Schmitt Trigger causes the Counter Control Logic to close the Audio Switch and the Counter Gate switch in the main Counter The number of cycles of the audio signal are counted by the Audio Counter The number of time base reference pulses are counted by the main Counter After a fixed period of time the Controller readies the count to to stop The next signal pulse from the Schmitt Trigger causes the two switches to open The counts in the two counters are then read back and the audio frequency is computed and displayed Local Oscillator The heart of the LO is a 320 to 650 MHz High Frequency Voltage Controlled Oscillator HF VCO After passing through the programmable LO Divider the HF VCO signal becomes the LO drive to the Input Mixer The LO Divider is programmed to divide the HF VCO by powers of two from 21
434. ery Com ponen section Replaceable Parts Mfr Part Number 0699 0136 4 1 8 0 51 1 4 1 8 0 2152 0699 0136 0699 0132 06990133 1 8 75 0 4 1 8 0 825 0699 0071 4 1 8 10 2152 0699 0071 0699 0137 C4 1 8 TO 101 F 0699 0135 0699 0134 C3 1 8 TO 75R0 F C4 1 8 T0 825R F 4 1 8 0 287 C3 1 8 TO 100R F C4 1 8 T0 2152 F 0698 8827 4 1 8 0 1473 part change 6 63 Replaceable Parts Reference HP Part C Designation Number D 2314A TO 2414A AIb5R38 0699 0133 1 2422A AND ABOVE AI5R38 A15R39 0698 3266 5 2314A TO 2414A A15R40 0699 0132 0 2422A AND ABOVE A15R40 1584 1 0699 0071 6 A15R42 2100 3054 6 A15RA43 0698 0083 8 A15R44 0698 0084 9 2314A TO 2414A 15 45 0699 0733 1 2422A AND ABOVE A15R45 A15R46 0698 7242 5 A15R47 0698 3442 9 A15R48 0698 7209 4 A15R49 06980082 7 A15R50 0698 0082 7 A15R51 0698 0082 7 A15R52 0698 0082 7 A15R53 0757 0416 7 A15R54 0698 3454 3 A15R55 0698 0082 7 A15R56 0757 0465 6 A15R57 0757 0279 0 15 58 0757 0428 1 A15R59 07570442 9 A15R60 0698 3460 1 A15R61 0757 0442 9 2314A TO 2531 Al6R62 0688 7212 9 2544A AND ABOVE 15862 Rele to Section 7 for npdate information 6 64 Qty Table 6 3 Replaceable Parts Description RESISTOR 61 1 1 25W TC 04 100 NOT ASSIGNED RESISTOR 237K 1 125W F TC 0 100 RESISTOR 248 1 25W TC 204 100 NOT ASSIGN
435. es of signal processing Service Sheet BD1 8D 3 Service Model 8901B Table 8D 2 Types of Audio Signal Processing Type of Processing Selections Available High Pass Filters lt 20 Hz through path 50 Hz 300 Hz Low Pass Filters 3 kHz 15 kHz 220 kHz low ringing 2200 kHz 260 kHz LPF FM De emphasis Networks FM De emphasis Selection Pre display On Pre display Off Signal Polarity Inverting Non inverting Relative Gain 0 dB 20 dB 40 dB The Audio Range Detectors are used to determine the audio gain the Audio Range Level line and to sense audio overloading the Audio Overvoltage Status line Voltmeter 8D 4 The demodulated signal is detected by both the Audio Average Detector and the Audio Peak Detector The detector outputs are two of several Voltmeter inputs switched by the Input Selector The Voltmeter consists of a Voltage to Time Converter whose output is applied to the Counter The Voltage to Time Converter produces a Stop Count pulse with an interval between pulses proportional to the dc input voltage The pulse gates the Counter which counts the 10 MHz time base reference The count accumulated during the gate interval is proportional to the input voltage Other inputs into the Voltmeter include e RF Peak Level IF Peak Level e IF Average Level normally equal to the ALC reference e Audio Range Level e RF Average Power Level e AM Calibration e Audio Distortion from an audio
436. ess and Service Error Message determined by N See Error Messages paragraph 8 8 N 140 to N 189 Enables measurement to halt on the Measurement Progress and Service Error Message determined by N See Error Messages paragraph 8 8 Special Functions 8B 5 Service 8B 6 Model 8901B 45 N AM and FM Calibrator and RF Power Reference Control See Service Sheets 30 AM Calibrator 29 FM Calibrator and 3 RF Power Reference Calibrator Power Frequency Reference Off Off channel Off Off 0 Low 1 On Off Low 2 Low Off 3 Low Off 4 Switching 33 Low 5 Switching 100 AM Low 6 On Off High 7 Off On High 8 On On High 9 Switching 33 AM High Switching 100 AM High On Off Switching Off On Switching On On Switching Switching 33 AM Switching Switching 100 AM Switching Off Off Low On Off Low Off On Low On On Low Switching 33 AM Low Switching 100 AM Low On Off High Off On High On On High Switching 33 AM High Switching 100 AM High On Off Switching Off On Switching On On Switching Switching 33 AM Switching Switching 100 AM Switching 46 N Count Internal Signals The Counter counts the internal signal selected by N for 100 ms and displays the count This is equivalent to measuring the frequency of the signal with 10 Hz resolution for most signals See Service Sheets 22 and 23 N 1 Intermediate Frequency
437. ete ENCAP encapsulated CONN connector EXT alate i external cadmium plate Cn sion eu farad CRP cathode ray tube FET field effect transistor CTL complementary flip flop transistor logic ous flat head CW continuous wave FILH fillister head CW osos da clockwise FM frequency modulation centimeter front panel D A digital to analog frequency decibel rc fixed dBm decibel referred Q gram to 1 mW germanium direct current GHZ shee vane cua gigahertz deg degree temperature GE idet ardore bates glass interval or difference GRD ground ed ede casas degree plane cle heal ne ata henry angle i sas hour OC degree Celsius gt ER heterodyne centigrade HEX hexagonal emus degree Fahrenheit HD head degree Kelvin HDW hardware DEPC deposited carbon re ee high frequency le n edes detector mercury diameter oos ve high DIA diameter used in Hewlett Packard parts list HPF high pass filter DIFF AMPL differential HR
438. f 11 DIGITAL SYMBOLOGY REFERENCE INFORMATION Sequential Logic Functions Cont d REG Register Array of unconnected flip flops that form a simple register or latch SREG Shift Register Array of flip flops that form a register with internal connections that permit shifting the contents from flip flop to flip flop ROM Read Only Memory Addressable memory with read out capability only RAM Random Access Memory Addressable memory with read in and read out capability Dependency Notation Cm Control Dependency Binary affecting input used where more than a simple AND relationship exists between the C input and the affected inputs and outputs used only with D type flip flops Gm Gate AND Dependency Binary affecting input with an AND relationship to those inputs or outputs labeled with the same identifier The m is replaced with a number or letter the identifier Vm OR Dependency Binary affecting input with an OR relationship to those inputs or Outputs labeled with the same identifier The m is replaced with a number or the letter the identifier mAm Address Dependency Binary affecting inputs of affected outputs The m prefix is replaced with a number that differentiates between several address inputs indicates dependency or indicates demultiplexing of address inputs and outputs The m suffix indicates the number of cells that can be addressed ENm Enable Dependency Binary affecting input which when active enables
439. f Operation for Simplified Block Diagram General The Modulation Analyzer is a general purpose tuned signal measuring instrument The Overall Block Diagram breaks up the instrument s functions so they correspond to those of a receiver RF Block IF Block and Audio Block The Digital Block using the receiver analogy roughly corresponds to the human operator Each of the functional blocks is shown in greater detail in Service Sheets BD2 through 5 Sensor Module During normal operation the RF input signal is applied to an external Sensor Module such as the HP 11722A The Input Switch in the Sensor Module routes the RF signal to the Power Sensor when the RF Power measurement mode is selected The Power Sensor converts the RF input signal to a chopped dc voltage which is proportional to the average power level of the signal For other measurement modes the switch routes the input signal to the INPUT connector of the Modulation Analyzer The Sensor Module also contains a resistor which provides a means for the Modulation Analyzer to identify the type of Power Sensor in the Sensor Module Power Meter The Power Sensor and Power Meter amplify the dc voltage from the Power Sensor s transducer so the voltage can be measured by the Voltmeter in the Audio Block To minimize the effect of dc drift in the amplifiers which may even exceed the dc voltage from the transducer itself the transducer s output is converted to an ac voltage by a chopper
440. f hints whenever they can be given reliably The limits given in the troubleshooting checks are rather loose to facilitate the use of general purpose equipment usually an oscilloscope If a slightly out of tolerance condition is suspected the test can usually be run more rigorously paying greater attention to measurement accuracy Troubleshooting on the block diagram level normally utilizes User and Service Special Functions while troubleshooting on the schematic level often utilizes Direct Control Special Functions Direct Control Special Functions will require some study of their operation before using them for the first time 8A 6 Model 8901B Service Table 8 1 Assembly and Service Sheet Cross Reference Index Schematic Block Diagram Reference Assembly Name Service Sheet Number Designator 1 Keyboard and Display 25 26 27 5 A2 Audio Filters 12 4 A3 Audio De emphasis and Output 13 4 A4 FM Demodulator 10 11 3 5 Voltmeter 14 15 4 6 Demodulator 8 9 3 7 9 Not Assigned A10 Power Supply Regulators 31 32 5 A11 Counter 22 23 5 A12 Not Assigned A13 Controller 5 A14 Remote Interface 28 5 A15 RF Input 2 A16 Buffer Amplifier Option Series 030 2 A17 Input Mixer 2 A18 IF Amplifier 2 A19 LO Divider 2 A20 LO Control 2 A21 Low Frequency VCXO F
441. faulty see Service Sheet 12 and check the 15 kHz Low Pass Filter Audio Filters and De emphasis Check NOTE This check assumes that 71 Audio Filters and Gain Check gives positive results Set the audio synthesizer to 1 kHz at 17 dBm The synthesizer output impedance should be 500 Connect its output to A2J2 FM Connect a high impedance ac coupled oscilloscope with 10 1 divider probe to DE EM OUT Set the signal generator to approximately 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Press FM Key in 2 2 SPCL to set the audio gain to an intermediate range The oscilloscope should show a sinusoidal waveform with an ac amplitude of 1 9 to 2 3 Vpp If faulty see Service Sheet 13 and check the audio path beginning at the high pass filters Service Sheet BD4 8D 41 Service 8D 42 10 11 12 13 14 15 Model 8901B Set the synthesizer frequency to 300 Hz Set HP FILTER to 300 Hz The waveform should have an ac amplitude of 1 3 to 1 7 Vpp If faulty see Service Sheet 13 and check the 300 Hz High Pass Filter Set the synthesizer frequency to 50 Hz Set HP FILTER to 50 Hz The waveform should have an ac amplitude of 1 3 to 1 7 Vpp If faulty see Service Sheet 13 and check the 50 Hz High Pass Filter Set the synthesizer frequen
442. ge of the A13 Controller Assembly are located four testpoints and four associated LED annunciators labeled TEST which are used primarily for troubleshooting the instrument The LED annunciators are labeled from left to right 8 4 2 and 1 and are associated with test points A B C and D respectively The label on the annunciators is sometimes used to represent a binary weighting They function in the following ways 1 At instrument power up the TEST annunciators light in a certain sequence that indicates proper functioning of several vital areas of the instrument A failure in any of the areas is indicated on the annunciators For details see Power Up Checks in paragraph 8 9 2 After power up annunciator 1 toggles once for each measurement cycle 3 After power up annunciator 2 toggles once for each keyboard interrupt that is each time a key is pressed 4 After power up annunciator 4 toggles once for each HP IB interrupt Grounding of certain of the TEST testpoints alters instrument operation in the following ways 1 Grounding testpoint A is used to alter the measurement halt function of Special Function 43 N See Service Error Messages in paragraph 8 8 2 Grounding testpoint B causes some of the power up sequence to be bypassed and thus shortens the turn on time of the instrument The power up checks are now invalid 3 Grounding testpoint C initiates the Counter signature analysis troubleshooting routine See Service Sheet
443. gh to Low OUTPUT Edge Sensitive OUTPUT RESPONSE i OUTPUT DELAY indicator symbol 71 shows that the out ed Output High put becomes effective after the input signal returns to its inactive state j H Delayed Output 1 Active Low INHIBIT INPUTS INHIBIT indicator symbol indicates an input that when active inhibits blocks the output s from achieving their active states the outputs remain inactive ANALOG LINES ANALOG indicator symbol indicates a line that has an analog input or output NONLOGIC CONNECTION The Nonlogic Connection symbol X indicates a connec tion that does not carry any logic information 8A 19 Service Model 8901B Table 8 6 Schematic Diagram Notes 11 of 11 AND The input that controls or gates other inputs is labeled with a C or a G followed by an identifying number The controlled or gated input or output is labeled with the same number In this example 1 is controlled by G1 OR When a V input is active the output will be in its active state With the V input inactive the device functions as if the V input doesn t exist ENABLE When the EN input is active the output is enabled to function normaily When the EN input is inactive the three state output V in this case becomes a high impedance effectively removing that device from the circuit TRANSMISSION When
444. gnificant DAC MSDAC and a hexadecimal 55 to the least significant DAC LSDAC The Controller then counts the frequency of the HF VCO The LSDAC is then changed to AA The Controller again counts the output of the HF VCO and then computes the difference between the first and second frequencies This difference should fall between 1 95 and 4 5 MHz If it does not 10 will be displayed in digit positions 3 and 4 Test 11 Undefined Test 12 Undefined LF VCXO Lock Acquisition Tests 4 4 Test 13 Phase Lock Loop Acquisition See Service Sheets 18 and 20 Tests the HF VCO s ability to lock to the LF VCXO The Controller turns off the Sweep Current Sources and the LF VCXO tune filter It then programs the DAC to output a tune voltage which causes the HF VCO to operate near the center of its frequency range The Controller rapidly switches the DAC output to the LF VCXO with the DAC still programmed to midrange The sampler loop is then closed and the output of the HF VCO is counted If the HF VCO is operating properly it will drift until it locks to a harmonic of the LF VXCO via the sampler If the HF VCO frequency has moved more than 2 MHz it has failed to lock to a harmonic of the LF VCXO and 13 will be displayed in digit positions 1 and 2 Test 14 Phase Lock Loop Stability See Service Sheet 20 Tests the ability of the HF VCO to follow step changes in the LF VCXO The Controller sends the DAC a code which forces the LF VCXO to t
445. hat further amplify filter level detect and demodulate the IF signal The diagram also documents the AM and FM calibrators NOTE The following two paragraphs contain operating principles for both the A54 A55 and A71 A72 Option Series 030 assemblies The A54 and A55 Assemblies are used in instruments with serial prefixes prior to 2636A the A71 and A72 Assemblies are used in instruments with serial prefixes 2642A and above Channel Filter Assembly A55 or A72 Option Series 030 The A55 A72 Channel Filter Assembly and A54 A71 IF Amplifier Detector Assembly are used only in the Selective Power measurement mode The assemblies are installed only in Option Series 030 the Selective Power Option as defined in Table 8D 1 The Adjacent Channel Power measurement is controlled by Special Function 24 The 455 kHz IF signal is routed through an IF Step Up Transformer to one of two channel filter paths The channel filter path is determined by Special Function 24 First Channel 1 Filter the wide filter is selected by Special Functions 24 1 and 24 2 First Channel 2 Filter the narrow filter is selected by Special Functions 24 3 24 4 24 5 and 24 6 Four filters are available specified by the option number and two filter options must be chosen Of the two filter options the wider bandwidth filter becomes First Channel 1 Filter the narrower bandwidth filter becomes First Channel 2 Filter Again refer to Table 8D 1 The total IF me
446. he Microprocessor should be interrupted The ROM in the Interface Control Logic is addressed by two of the HP IB data lines the Address Decoder and one of the control lines Attention ATN The ROM contains the control information for the Interface Control Logic and the Microprocessor If the Modulation Analyzer s listen address is recognized by the Address Decoder the Microprocessor attempts to set the Remote Enable Flip Flop If the HP IB Remote Enable REN control line is true the flip flop is set if not already set and the Microprocessor sets a status bit in memory Each time the Microprocessor performs any remote dependent operation it checks both the status bit and the flip flop output Remote Enable Latch RNL Both must be set for the instrument to remain in remote If REN goes false at any time the Remote Enable Flip Flop is cleared and the instrument is no longer in remote The Address Decoder compares the address set by the Address Switches with the five least significant I O bytes to determine if the instrument is being addressed The Interface Control Logic looks at the Service Sheet BD5 8D 51 Service Model 8901B output of the Address Decoder and the next two input bits to determine if it is a talk or listen address and if the instrument should respond to it The result of this determination modifies the address to the ROM in the Interface Control Logic The Address Readback outputs the address from the Ad
447. he ROM number For example if ROM 3 is faulty the TEST LEDs will blink 2 1 that is a binary 3 The check then continues on to the next ROM See Service Sheets BD5 and 24 If no faulty ROM is found a steady 1 appears for about 2 seconds 3 Random Access Memory Check Data is written into and retrieved from the random access memory RAM During the test 2 is output to the TEST LEDs for about 2 seconds If the data read back differs from the data entered the failure is indicated by outputting the same code for an additional 2 seconds See Service Sheet 24 4 Instrument Bus Parity Check A parity check of the data lines of the Instrument Bus is made A failure is indicated by 2 1 on the TEST LEDs for about 2 seconds See Service Sheets BD5 15 and 24 5 Local Oscillator Check The Local Oscillator LO is given a series of tests similar to issuing the 54 0 SPCL command see Service Special Functions paragraph 8 7 During the test 4 is output to the TEST LEDs for about second A failure is indicated by outputting the same code for an additional 2 seconds See Service Sheet BD2 6 Keyboard Check The keyboard is scanned to see if any keys are down If a key is down error code 4 1 is output to the TEST LEDs for 2 seconds See Service Sheets BD5 and 25 Power Up Checks 8B 17 eee eee ae Service Model 8901B 8 10 CONTROLLER TEST LEDS AND TEST POINTS Near the top ed
448. he bottom of its frequency range The frequency of the HF VCO is counted The DAC is then instructed to quickly slew the LF VCXO to the top of its frequency range and then back down to the bottom again When the DAC output voltage reaches minimum the HF VCO is again counted The frequency Special Functions ee ee eee cE ee eee 1 Model 8901B Service change of the HF VCO should be less than 100 kHz If it is not 14 will be displayed in digit positions 3 and 4 N 4 Test 15 Undefined N 4 Test 16 Undefined LF VCXO Lock Range Tests N 5 Test 17 LF VCXO Range Test See Service Sheets 19 and 20 Tests to see if the DAC moves the LF VCXO within the proper frequency limits Since the LF VCXO frequency cannot be measured directly an indirect process is used The Controller sends a hexadecimal 00 to the DAC which drives the LF VCXO to its minimum frequency This frequency change causes a proportional change in the HF VCO frequency which is measured by the Counter The Controller then sends a hexadecimal FF to the DAC driving the LF VCXO to its highest frequency The HF VCO output is again counted The difference between the highest and lowest frequencies from the HF VCO should be between 2 95 and 5 5 MHz If the frequency difference does not fall within this range 17 will be displayed in digit positions 1 and 2 N 5 Test 18 Gain of the LF VCXO Drive See Service Sheets 19 and 20 Tests the gain of the LF VCXO This is t
449. he hardest test in this series for the instrument to pass The Controller sends a hexadecimal 55 to the most significant DAC MSDAC and hexadecimal AA to the least significant DAC LSDAC and then counts the frequency of the HF VCO The Controller then changes the MSDAC to a hexadecimal AA and the LSDAC to a hexadecimal 55 and again counts the frequency of the HF VCO The difference between the first and second frequencies should be within the range of 1 05 and 2 4 MHz If it is not 18 will be displayed in digit positions 3 and 4 N 5 Test 19 Undefined N 5 Test 20 Undefined 55 0 Sweep Doubler Band Sweeps the LO slowly back and forth across the doubler band See Service Sheet 17 56 0 Sweep Bands 4 through 8 Sweeps the LO slowly and sequentially across bands 4 through 8 See Service Sheet 17 57 0 Sweep Bands DBLR through 3 Sweeps the LO slowly and sequentially across bands DBLR through 3 See Service Sheet 17 Special Functions 8B 11 Service Model 8901B 60 0 Key Scan The keyboard is scanned and a key code is displayed and output to the HP IB The key codes are shown in Figure 8B 3 To use the Key Scan Special Function remove the instrument top cover Key in 60 0 SPCL then jumper A13TP3 INT to A13TP1 GND on the A13 Controller Assembly Press the front panel keys and observe the display If two or more keys are pressed simultaneously the display shows the code corresponding to the first
450. hematic Interconnect information Circled letter with adjacent number indicates circuit path continuation to diagrams procedures i and component location Plug in heer a diagrams Connection to information this example circuit signifies number Look for same Board Board Board measuring aid metal indicates circled letter Assembly Assembly Assembly post circuit pad pin of socket on the indicated designation name part number etc provided XA2 service sheet Circuit Signal functional A2 OUTPUT ASSY 08620 60129 and title cm ae oe Qum b M HIGH Socket designation SERIES 2 2 TO ALC LOOP ap As REGULATOR 3 assembly J3 not 81 137 mounted C lt 8 on assembly C1 2 p E 947 2 5K Non plug in information Solder point numbered ae X XXXX Wire color code Code used MIL STO 681 is the same as the resistor color code First number identifies the base color Second number the wider stripe and the third number the narrower stripe Example denotes white base yellow wide stripe violet narrow stripe 8A 10 prefix of instrument to which schematic directly applies Reference designations within outlined assemblies are abbreviated Full for example R1 of assembly 2 is 2 1 Designations of other components are complete as shown Connector symbols within
451. hen the ALC loop is switched off 2 to determine the IF Level in the IF Level measurement mode where it is compared to the ALC reference FM Demodulator The FM Demodulator consists of IF Limiters and an FM Discriminator frequency to voltage converter The limiter amplifier provides 66 dB of gain and limits the output voltage swing to approximately 1 Vpp to reduce the influence of AM and noise on FM measurements The signal from the limiters also drives a Counter input for measuring the IF frequency The FM Discriminator produces a voltage linearly proportional to the IF frequency and the FM variations in the IF frequency appear as an ac component on the output The ac component is amplified filtered and then processed by the Audio Circuits The output from the FM Discriminator with both ac and dc components is sent to the rear panel FM OUTPUT connector The filtered dc component is used to tune the LO in the track tune mode Audio Circuits The signal from the AM or FM Demodulators is filtered by a 260 kHz Low Pass Filter Before the audio signal is measured or sent to the MODULATION OUTPUT AUDIO INPUT connector it is processed further by various filters amplifiers and attenuators For FM the audio may also be de emphasized For the signal is integrated Factors which control the audio processing are measurement mode selected features audio level input frequency and any selected special functions Table 8D 2 summarizes the typ
452. his function is similar to the function above except PIO port B is displayed The display is interpreted as shown in the table below PIO Port B A140113 Pin 1 38 35 32 29 26 23 20 Display Digit 1 2 3 4 5 6 7 Mnemonic ARD AAD ATT ATL SDV Liame a NE 1 True Special Functions 8 13 Service Model 8901B 8 8 ERROR MESSAGES General The instrument generates error messages to indicate operating problems incorrect keyboard entries or service related problems The error message is cleared when the error condition is removed Error Message Catagories Errors 01 through 19 30 through 39 and 90 through 99 These are Operating Error Messages which indicate that not all conditions have been met to assure a calibrated measurement Operating Error Messages can usually be cleared by readjustment of the front panel controls The Error Disable Special Function 8 can be used to selectively disable certain error messages More information on Operating Error Messages and error message disabling can be found under Error Message Summary and Error Disable in Section 3 and on the Operating Information pull out card Errors 20 through 29 These are Entry Error Messages which indicate that an invalid key sequence or keyboard entry has been made These errors require that a new keyboard entry or function selection be made More information on Entry Error Messages can be fou
453. i 4 BETWEEN A27 AND m i A 3 di AH 55 MP36 5 ME argen W45 om MP20 MP38 MP41 GASKET BETWEEN A28 AND MP38 A26MP1 Figure 6 6 Parts and Cable Identication Bottom View reU 1 21 90 6 185 Model 8901B Instrument Changes Section 7 INSTRUMENT CHANGES 7 1 INTRODUCTION TO THIS SECTION This section contains instrument modification recommendations and procedures that could improve the performance and reliability of your instrument Refer to Instruments Covered by This Manual paragraph 1 5 in Section 1 for important information about serial number coverage 7 2 FIRMWARE CHANGE SUMMARY 23144 TO 26444 Description The instrument has undergone several changes in firmware This article summarizes the changes and should be helpful in deciding whether to update firmware to a more recent edition The firmware is changed whenever anomalies are found in the instrument s operation which can be corrected by altering the Controller s program Firmware is also changed to add new features which may be only changes in the program or which may also result from instrument hardware changes Since the program resides in the ROMs the firmware the ROMs are altered each time the program is changed At that time the new ROMs are given new part numbers and the software the program date is changed To display the software date key in Special Function 42 0 Always update firmware with the
454. il the display drops to 1 0 Record the signal source s frequency Decrease the signal source frequency until the display rises to 2 0 then drops to 1 0 Note the signal source s frequency The difference between this frequency and the frequency in step 11 should be between 3 and 7 kHz If faulty see Service Sheet 34 and check the Second Channel 2 Filter Key in 0 3FO SPCL to read back the Option Series 030 Installed Indicator The Measuring Receiver should display 000001 0000 If faulty see Service Sheet 34 and check the Option Series 030 Installed Indicator Service Sheet BD3 Model 8901B Service BLOCK Service Sheet BD4 e Audio PRINCIPLES OF OPERATION General The Audio Block Diagram documents the audio circuits which process the demodulated IF signal and convert the audio signal to dc for measurement by an internal digital voltmeter The audio circuits include amplifiers filters attenuators switches ac to dc converters an integrator a counter a distortion analyzer etc Audio Filters Assembly A2 The residual IF carrier on the demodulated AM or FM is filtered by the 260 kHz Low Pass Filter in each path These filters determine the audio bandwidth when LP FILTER is set to gt 200 kHz 20 dB Attenuator 1 partially determines the audio gain in the FM and M modes The demodulated signal passes through Amplifier 1 which has a gain of 8 9 dB and when selected the 15 kHz or gt 20 kHz Low Pass Filter further f
455. ilter 2 A22 Low Frequency VCXO 2 A23 Sampler 2 A24 High Frequency VCO 2 A25 Audio Motherboard A26 Power Supply Motherboard 5 A27 Digital Motherboard A28 RF Motherboard A29 Series Regulator Heat Sink A30 Line Power A31 Remote Interface Connector A32 Power Reference Oscillator A33 A49 Not Assigned 50 AM Calibrator A51 FM Calibrator A52 Audio Counter Distortion Analyzer A53 Power Meter A54 IF Channel Filter Option Series 030 A55 IF Amplifier Detector Option Series 030 A56 A69 Not Assigned 71 IF Channel Filter Option Series 030 A72 IF Amplifier Detector Option Series 030 Service Model 8901B 17 28 1 KEYBOARD A30 UNDER TRANSFORMER Figure 3 Assembly Locations 2314 to 2636A 8A 8 Model 8901B Service 4 KEYBOARD Figure 8A 3a Assembly Locations 2642A and Above ge m RT Service 8 6 SCHEMATIC SYMBOLOGY AND SCHEMATIC DIAGRAM NOTES Model 8901B Table 8 6 summarizes the symbology used in presenting many devices found in the instrument The logic symbols used in this manual are based on the Institute of Electrical and Electronic Engineers IEEE in IEEE STD 91 1984 Graphic Symbols for Logic Functions This publication may be purchased from Institute of Electrical and Electronic Engineers 345 East 47th Street New York NY 10017 Table 8 6 Schematic Diagram Notes 1 of 11 Test points symbols are numbered for easy correlation to sc
456. ilters the signal The 15 kHz Low Pass Filter is automatically selected for the 455 kHz IF The gt 20 kHz Low Pass Filter can also be selected The 6 dB Attenuator in the through path matches the 6 dB loss through the two filters Amplifier 2 has 13 7 dB of gain 20 dB Attenuator 2 gives further audio range control Amplifier 3 has 20 dB of gain Amplifiers 1 2 and 3 distribute the audio gain for optimum noise reduction and distortion Special Function 2 controls the overall audio gain Table 8D 12 lists the modulation ranges and the associated attenuation The ranges in the table apply only for PEAK PEAK and AVG audio detectors Table 80 12 Attenuation vs Modulation Range Modulation Range 20 dB Attenuator AM FM Depth Deviation Deviation kHz rad 40 4 4 le 100 400 400 With 750 FM DE EMPHASIS and PRE DISPLAY selected the FM Audio De emphasis and Output Assembly A3 The Audio De emphasis and Output Assembly contains audio filters FM de emphasis networks integrator audio output amplifiers and two audio level detectors The 50 and 300 Hz High Pass and 3 kHz Low Pass Filters are active filters selected from the front panel The four FM de emphasis networks are single pole low pass filters with time constants of 750 75 50 and 25 The 750 network also adds 20 dB of gain The phase deviation of the RF input signal is recovered by integrating the demodulated FM with th
457. itter Output Three state Output Indicates outputs can have a high impedance disconnect state in addition to the normal binary logic states 8 13 Service X Y XY Functional Labels MUX DEMUX CPU 8A 14 Model 8901B Table 8A 6 Schematic Diagram Notes 5 of 11 DIGITAL SYMBOLOGY REFERENCE INFORMATION Combinational Logic Symbols and Functions Summing Junction Outputs added together at common point AND AII inputs must be active for the output to be active OR One or more inputs being active wil cause the output to be active Logic Threshold m or more inputs being active will cause the output to be active replace m with a number EXCLUSIVE OR Output will be active when one and only one input is active m and only m Output will be active when m and only m inputs are active replace m with a number Logic Identity Output will be active only when all or none of the inputs are active i e when all inputs are identical output will be active Amplifier The output will be active only when the input is active can be used with polarity or logic indicator at input or output to signify inversion Signal Level Converter input level s are different than output level s Bilateral Switch Binary controlled switch which acts as an on off switch to analog or binary signals flowing in both directions Dependency notation should be used to indicate affecting affected inputs and
458. k mode an automatic signal search is performed as described above When a signal is found the the LO is configured as in Figure 8D 4 Here a dc voltage from the FM Demodulator is fed back to the HF VCO tune line to form a frequency lock loop If the frequency of the input signal changes the HF VCO is tuned to follow it The gain of the loop depends on the octave number of the LO Divider This gain variation is compensated for by adjusting the gain of the Track Loop Amplifier in the tune line 3 T 3 x do OS 8 P s mg cere IB OUTPUT 2 Ex Counter VCO TUNE INTEGRATOR AND AMPLIFIER Ae veg TRACK LOOP r AMPLIFIER 7 m 14 SOURCE OG lace 05 SWEEP From tE Ta E Law M MC HG ee DAC CONTROL E DUM ere aa AMPLIFIER ne 4 NI E CONV x Figure 8D 4 LO Configuration Track Manual Tuning and Signal Tracking In the manual track tune mode the LO is first tuned as in the manual tune mode discussed above The LO is then configured as in Figure 8D 4 Manual track tuning permits the tracking of a moving signal in the presence of stronger signals Track tuning has a slightly higher residual FM level than low noise tuning Counter 8D 8 Operation of the Counter is conventional The input signal to the Counter is gated by a train of periodic time base pulses via the Time Base 6 25 kHz line The period of the pulse
459. l Signature analysis can be speeded up if the following considerations are kept in mind 1 Make sure that every step is performed as described in the set up procedure That is make sure that the clock start and stop connections and triggering are correct 2 Double check that the signatures are being taken at the correct node 3 Make sure that the signature analyzer probe is making good contact with the pin being checked Oxidation on pins can cause invalid signatures due to poor contact 4 When you think you have found a bad signature double check to make sure 5 When checking a node check that the unstable signature indicator is not blinking Signature Analysis 8B 19 Model 8901B Service 8 12 GENERAL DISASSEMBLY PROCEDURES Top Cover Removal 1 Remove the two top plastic standoffs on the rear panel by removing the Pozidriv screws from each standoff 2 Unscrew the Pozidriv screw at the middle of the rear edge of the top cover This is a captive screw and will cause the top cover to push away from the frame 3 Lift the top cover off the instrument Bottom Cover Removal 1 Turn the instrument upside down 2 Remove the two top plastic standoffs on the rear panel by removing the Pozidriv screws from each standoff 3 Unscrew the Pozidriv screw at the middle of the rear edge of the bottom cover This is a captive screw and will cause the bottom cover to push away from the frame 4 Lift the bottom cover off the i
460. l display Power Supply Assemblies A10 and A26 80 52 The five regulated power supplies are 15V 15V 40V 5V and 5V Each supply has its own secondary winding on the Line Transformer and all supplies except the 40V Supply have their own full wave rectifier The latter four supplies are referenced from the 15V supply Each supply is a series regulator type When the instrument is switched to STBY the 15V supply remains on and supplies current only to the High Stability Crystal Oscillator Option 002 In STBY the other supplies become referenced to 0V and thereby shut themselves off The supply switching is via the ON STBY Relay The fan is also switched by the relay Service Sheet BD5 Model 8901B Service TROUBLESHOOTING General Procedures for checking the Digital and Power Supply Sections of the instrument are given below The blocks or points to check are marked on the block diagram by a hexagon with a check mark and a number inside for example 73 Before performing any check perform all the checks on Service Sheet BD1 CAUTION Tighten SMC connectors to 0 6 5 in ib Hand tightening connectors is insufficient Hand tightened connectors can work loose and cause reduced performance or malfunctions Equipment Digital Test Extender Board ge ne a a red tes HP 08901 60081 OscilOsSCOpe cus iie rd abaci oo Ex ends Pus A tud ee HP 1740A Sienabtu
461. l with round edges and an ac amplitude of 300 to 340 mVpp and period of 90 to 110 Ignore Error 08 in the display If faulty see Service Sheet 29 and check the trapezoid generation circuits Key in 12 1 SPCL and 46 3 SPCL This sets the FM Calibrator to CW and causes the display to show its frequency The display should read between 1009000 and 1011000 If only slightly out of limits perform the Adjustment 9 FM Calibrator in Section 5 Otherwise see Service Sheet 29 and check the 10 1 MHz VCO Key in 12 0 SPCL This causes the display to read the computed peak deviation The display should read between 31 and 37 kHz If only slightly out of limits perform Adjustment 9 Calibrator Otherwise see Service Sheet 29 and check the 10 1 MHz VCO Key in 12 1 SPCL Connect the ac coupled oscilloscope to the CALIBRATION AM FM OUTPUT Switch the input impedance of the oscilloscope to 500 or terminate the input in 500 using a tee The waveform should be approximately sinusoidal and have an ac amplitude of 35 to 45 mVpp If faulty see Service Sheet 29 and check the Output Amplifier If it is good see Service Sheet 30 and check the RF path through the AM Calibrator AM Calibrator Check 1 Connect an ac coupled oscilloscope to the CALIBRATION AM FM OUTPUT Switch the input impedance of the oscilloscope to 500 or terminate the input 500 using a tee Key in 13 1 SPCL to set the AM Calibrator to CW The waveform should be
462. latest edition which is backward compatible See Service Sheet 24 for ROM identification Summary of Software Editions 1 Software date code 167 1983 2314A to 23334A ROM part numbers ROM 1 08901 80062 ROM 2 08901 80063 ROM 3 08901 80064 This is a preliminary edition of software which should be replaced by the most recent edition 2 Software date code 272 1983 2334A to 2426A ROM part numbers ROM 1 08901 80066 ROM 2 08901 80067 ROM 3 08901 80068 This is the first edition of software in production instruments 3 Software date code 115 1984 24324A to 2550A ROM part numbers ROM 1 08901 80071 ROM 2 08901 80072 ROM 3 08901 80073 Instrument Changes Model 8901B Change I adds a few function settings not stored by the Store Recall feature Previously when the settings were recalled the functions were set to their current settings instead of the stored settings The unstored functions were 1 manually selected Tuned RF Level filtering Special Function 4 2 power sensor calibration factor table entry when entry is in progress 3 the last calibrated power sensor type 4 the HP IB SRQ mask and 5 the HP IB Status Byte Change 4 increases RF Power measurement resolution by a factor of 10 to allow the instrument s power meter to be similar to other power meters 1 mW now reads 1000 0 uW instead of 1 000 mW Change 5 adds Special Functions 23 and 24 which are used with Option Series 030 Selective P
463. lation Analyzer has been addressed to talk The require service message SRQ is also output via the Remote Interface The Handshake Logic controls the asynchronous transfer of bytes over the HP IB The bytes are transferred without interrupting the Microprocessor in two cases when the byte is data but the Modulation Analyzer is not addressed to listen or when the byte is not an interrupting bus command The Handshake Logic also provides the means for the Microprocessor to complete the handshake if the byte is an interrupting type When the Modulation Analyzer is accepting bytes the Handshake Logic 1 monitors the Micropro cessor and HP IB and signals the HP IB talker or bus controller when the Modulation Analyzer is ready to receive 2 tells the Microprocessor when valid data is on the HP IB and 3 tells the HP IB talker when the Microprocessor has accepted the data When the Modualtion Analyzer is outputting data or status bytes the Handshake Logic 1 tells the Microprocessor when HP IB listener is ready to receive 2 provides the Microprocessor with logic to tell the listener when data is valid and 3 tells the Microprocessor when the listener has accepted data The HP IB Input Output transceiver acts as an HP IB buffer and send receive switch It is controlled by the Interface Control Logic The Interface Control Logic together with the Address Decoder determines the talk or listen status of the interface and whether or not t
464. lder instrument configurations Buffer Amplifier Assembly A16 2314A to 2636A The Buffer Amplifier contains two amplifers used to split the IF signal from the Input Mixer The upper path is a unity gain amplifier used to drive the 18 IF Amplifier The lower path has a gain of 9dB and used to provide IF input to the A55 IF Channel Filter when the Modulation Analyzer is in the Selective Power Measurement mode IF Amplifier Assembly A18 The IF Amplifier increases the signal from the Input Mixer Assembly to a level suitable to drive the AM and FM Demodulators The IF strip is designed for low noise linear phase shift vs frequency that is constant group delay to minimize FM distortion and for flat frequency response to minimize incidental AM that is AM occurring as the result of FM Local Oscillator The Local Oscillator consists of the LO Divider Assembly A19 LO Control Assembly A20 Low Frequency VCXO Filter Assembly A21 Low Frequency VCXO Assembly A22 Sampler Assembly A23 and High Frequency VCO Assembly A24 The overall operation and different tuning modes of the LO are described in the Principles of Operation for Service Sheet BD1 High Frequency VCO Assembly A24 The High Frequency Voltage Controlled Oscillator HF has a nominal frequency range of 320 to 650 MHz The output is buffered by two Output Buffer Amplifiers One output drives the LO Divider the other drives the Sampler The tune input to th
465. le Parts Table 6 3 Replaceable Parts Reference HP Part C sagt Mfr ty Description j Mfr Part Number Designation Number y Code ASORB1 0698 3442 9 RESISTOR 237 1 125W TC 0 100 24546 4 1 8 0 237 5082 0757 0442 9 RESISTOR 10K 1 125W TC 0 100 24546 4 1 8 0 1002 ASORB3 0757 0438 3 RESISTOR 5 11K 196 125W F TC 0 100 24546 4 1 8 10 5111 ASORBA 0757 0440 7 RESISTOR 7 5K 1 125W TC 0 100 24546 4 1 8 0 7501 ASOR85 0757 0438 3 RESISTOR 5 11K 1 125W TC 0 100 24546 C4 1 8 T0 5111 F 5 86 0757 0438 3 RESISTOR 5 11 1 125W 04 100 24546 C4 1 8 T0 5111F ASOR87 0757 0200 7 RESISTOR 5 62K 1 125W TC 0 100 24546 4 1 8 10 5621 ASOR8S 0698 3444 1 RESISTOR 316 1 125W F TC 0 100 24546 C4 118 T0 316R F ASORB9 0698 3444 1 RESISTOR 316 1 125W TC 0 100 24546 C4 1 8 TO 316R F ASORS0 0698 3441 8 RESISTOR 215 1 125W TC 0 100 24546 C4 1 8 T0 215R F ASORS1 0757 0402 i RESISTOR 110 1 125W TC 0 100 24546 C4 1 8 T0 1 11 F 50 92 0757 0416 7 RESISTOR 511 1 125W 0 100 24546 C4 1 8 TO 511R F ASORS3 0757 0280 3 RESISTOR 1K 1 125W TC 0 100 24546 C4 1 8 TO 1001 F ASORS4 0757 0279 0 RESISTOR 3 16 196 125W 0 100 24546 4 1 8 0 3161 ASOR95 0757 0421 4 RESISTOR 825 1 125W F TC 0 100 24546 C4 1 8 T0 825R F 5 96 0698 6343 5 RESISTOR 9K 1 125W TC 0 25 28480 0698 6343 A50R97 0757 0442 9 RESISTOR 10
466. lt when the Service Error Message specified by N or 100 minus N is encountered The two alternatives are as follows a To cause the measurement to pause approximately 1 second when a specified Service Error Message occurs key in 43 SPCL where is the Service Error Message code After pausing and displaying the Service Error Message code the measurement will continue on b To cause the measurement to halt when a specified Service Error Message occurs key in 43 N SPCL where N is the specified Service Error Message code plus 100 Once the measurement is halted pressing any key will terminate the halt feature unless testpoint TEST A on the A13 Controller Assembly is grounded If the testpoint is grounded pressing any key allows the measurement to proceed until the error is encountered again permitting single stepping of the measurement cycle Press the AUTOMATIC OPERATION key rapidly twice in succession to exit this function The Service Error Messages are as follows Error 70 Phase Lock Loop Step Down The LO phase lock loop has stepped to a lower harmonic of the LF VCXO in an attempt to tune the LO to the required frequency Stepping down once is occasionally necessary during normal tuning See Service Sheet BD2 and Service Special Function 54 in paragraph 8 7 Error 71 Phase Lock Loop Step Up This error message is the same as Error 70 except that the loop has stepped to a higher harmonic Error 72 Audio Overload The Audio
467. me Count Pulse Switch 2 is set to receive the output from Counter Stage 2 and the Output Switch is closed Count Pulse Switch 1 is readied but not closed until the next pulse from the Schmitt Trigger triggers the Counter Gate Control and sets Count Pulse Switch 1 to receive pulses from the Schmitt Trigger The Counter Stages 1 4 now begin counting pulses from the Schmitt Trigger Overflows from Stage 4 every 65 536 counts counted by the Controller via the Output Switch and Instrument Bus Coincident with the closing of Count Pulse Switch 1 the Voltmeter Audio Gate on Service Sheet BD5 closes and the main Counter begins counting the 10 MHz time base reference After 100 ms the Controller enables the Counter Gate Control to respond to the next pulse from the Schmitt Trigger When the pulse arrives it triggers the Counter Gate Control to open Count Pulse Switch 1 and the Voltmeter Audio Gate via the Stop Count Buffer If no pulse is received from the Schmitt Trigger after a fixed time the count sequence is aborted The count from Audio Counter Stages 1 4 is read back in two steps First the Controller reads back the count of Stages 3 and 4 by sending a series of pulses into Stage 3 via Count Pulse Switch 2 looking for the overflow from Stage 4 By knowing the number of pulses sent to Stage 3 the Controller can calculate the accumulated count Next the Controller sends 255 pulses to Stages 3 and 4 to fill them sets Count Pulse Switch 2 t
468. n Number D 10524 1990 1273 1 10525 1990 1273 1 A1DS26 1990 1273 1 10527 1990 1273 1 10528 1990 1273 T 10529 1990 1273 1 10530 1990 0699 3 2 1200 0901 7 2 2305 2914 A1DS32 1990 0670 0 105341 1990 0670 0 105361 1990 0670 0 A1DS36 1990 0678 8 2 10537 1990 0950 3 5 2920A AND ABOVE 10531 1990 0487 7 5 105321 1990 0487 7 105331 1990 0487 7 105341 1990 0487 7 105351 1990 0487 7 105361 1990 0835 9 2 105371 1990 1273 1 5 10538 1990 1273 1 10539 1990 1273 1 10540 1990 1273 1 A1DS41 1990 1273 1 2305 2914 105421 1990 0950 3 105431 1990 0950 3 105441 1990 0950 3 105451 1990 0678 8 2920A AND ABOVE 105421 1990 1273 1 125431 1990 1273 1 105451 1990 0835 9 10546 1990 0699 3 1200 0901 7 1 1251 5169 6 5 142 1200 0507 9 2 to section 7 lor update information Table 6 3 Replaceable Parts Description LED LAMP RED LUM INT 8 6MCD BVR 5V LED LAMP RED LUM INT 8 6MCD BVR 5V LED LAMP RED LUM INT 8 6MCD BVR 5V LED LAMP RED LUM INT 8 6MCD BVR 5V LED LAMP RED LUMANT 8 6MCD BVR a 5V LED LAMP RED LUMANT 8 6MCD BVA 5V LEO LIGHT BAR MODULE LUM4NT 7MCD SOCKET STRP 8 CONT W WRAP LED LAMP YLW LUM INT 1MCD IF 20MA MAX LED LAMP YLW LUM INT 1MCD IF 20MA MAX LED LAMP YLW LUM INT 1MCD IF 20MA MAX LED LAMP YLW LUM INT s 1MCD F 20MA MAX LED LAMP YLW LUMJNT 1 IF 20MA MAX LED LAMP GRN
469. n power source to the instrument input wiring terminals power cord or supplied power cord set In addition verify that a common ground exists between the Modulation Analyzer and all test equipment Safety Pay attention to WARNINGS and CAUTIONS They must be followed both for your protection and to avoid damage to the equipment Maintenance described herein is performed with power supplied to the instrument and with the protective covers removed Such maintenance should be performed only by service trained personnel who are aware of the hazards involved for example fire and electrical shock When maintenance can be performed without power supplied the power should be removed Any interruption of the protective grounding conductor inside or outside the instrument or disconnection of the protective earth terminal will create a potential shock hazard that could result in personal injury Grounding one conductor of a two conductor outlet is not sufficient Whenever it is likely that the protection has been impaired the instrument must be made inoperative that 18 secured against unintended operation If this instrument is to be energized via an autotransformer make sure that the autotransformer s common terminal is connected to the earth terminal of the power source Capacitors inside the instrument can still be charged even if the instrument 18 disconnected from its source of supply Make sure that only 250 volt fuses with the
470. nd under Error Message Summary in Section 3 and on the Operating Information pull out card Errors 40 through 64 These are Measurement Progress Error Messages which indicate if a given segment of the measurement cycle has been traversed These messages are not normally enabled Errors 65 through 89 These are Service Error Messages which provide additional service related information and are discussed below Service Error Messages do not necessarily infer that the instrument has a problem but may indicate a normal phenomenon under the particular circumstances These messages are not normally enabled Enabling Measurement Progress and Service Error Messages Service Error Messages Errors 40 through 89 are not normally displayed When a service related problem is suspected enable the display Measurement Progress and Service Error Messages by keying in Special Function 43 N with determined as follows N 0 Disables display of Service Error Messages 65 through 89 N 1 Enables display of Service Error Messages 65 through 89 Cleared by AUTOMATIC OPERATION key N 2 Enables display of Service Error Messages 65 through 89 Not cleared by AUTOMATIC OPERATION key N 40 through N 89 and N 140 through N 189 Enables measurement to pause or halt on Measurement Progress and Service Error Message indicated by N See the following paragraphs for details Measurement Progress Error Messages Errors 40 through 64 These Service Error Messages are use
471. nductor of a two conductor outlet 18 not sufficient protection Whenever it is likely that the protection has been impaired the instrument must be made inoperative and be secured against any unin tended operation If this instrument 18 to be energized via an autotransformer for voltage reduction make sure the common terminal is connected to the earth terminal of the power source Servicing instructions are for use by service trained personnel only To avoid dangerous electric shock do not perform any servicing unless qualified to do so Adjustments described in the manual are per formed with power supplied to the instrument while protective covers are removed Energy available at many points may if contacted re sult in personal injury Capacitors inside the instrument may still be charged even if the instrument has been dis connected from its source of supply For continued protection against fire hazard replace the line fuse s only with 250V fuse s of the same current rating and type for exam ple normal blow time delay etc Do not use repaired fuses or short circuited fuseholders ATTENTION Static Sensitive Devices This instrument was constructed in an ESD electro static discharge protected environment This is because most of the semi conductor devices used in this instrument are susceptible to damage by static discharge Depending on the magnitude of the charge device substrates can be punctu
472. now connected to the tune input of a highly stable Low Frequency Voltage Controlled Crystal Oscillator LF VCXO 8D 6 Service Sheet BD1 Model 8901B Service The LF VCXO drives the Sampler at a nominal but tunable 2 MHz rate The other input to the Sampler is the HF VCO The Sampler drives the HF VCO tune line through the Tune Integrator and Amplifier The HF VCO is thus phase locked to a harmonic of the LF VCXO which greatly improves the noise and frequency stability of the HF VCO Before closing the phase lock loop the DAC is set near the low end of its range When the loop is first locked the LO frequency is slightly low but after an iterative sequence of counting the HF VCO and tuning the LF VCXO by the DAC the LO is brought to within 500 Hz of the desired frequency During the process of fine tuning the LO the DAC may reach the end of its tuning range If this happens the Controller will break the lock loop set the DAC to the other end of its range and lock will be re established to a different harmonic of the LF VCXO Automatic Tuning and Low Noise The automatic tune mode is similar to the manual tune mode except the LO is first swept from the top to the bottom of each octave range by the Sweep Current Source See Figure 8D 3 If the LO sweeps past a signal at the INPUT the down converted signal appears in the IF and is detected by the IF Detectors The signal on the Stop Sweep line immediately turns
473. nsceivers Interface Control Logic Address Decoder part of the Microprocessor and Instrument Bus interface circuits As an input peripheral the Remote Interface accepts a byte from the HP IB data lines under control of the bus handshake lines It then interprets the data byte and the bus control lines to see if the byte is an address talk or listen a command or a data byte When a byte is processed one of three things happens 1 the byte is ignored 2 the byte is processed in hardware for example some bus commands or 3 the byte causes a Microprocessor interrupt for example codes received while addressed to listen The Microprocessor treats an HP IB interrupt as it would an interrupt from the Keyboard However the HP IB interrupt service routine first checks whether the byte is a command for example Device Clear address or data for example M1 If the byte is an address or command it is processed If the byte is data the routine first checks whether the instrument is in remote If it is the incoming byte is processed as program code If not the byte is ignored After processing a byte Microprocessor tells the Remote Interface what to do next for example input another byte set a status latch or prepare to output a byte As an output peripheral the Remote Interface takes a byte of status or measurement data from the Microprocessor and processes it over the HP IB It does this only after determining that the Modu
474. nse The feedback loop may also be defeated by the ALC Defeat line Special Function 6 controls the ALC loop The second output of the AM and IF Average Level Detector is buffered by the AM Output Buffer One output of the buffer is fed to the rear panel AM OUTPUT connector The other output is fed to the audio circuits for filtering and audio processing The output of the IF Buffer is detected by two detectors The IF Peak Detector output is read by the Voltmeter It is used in the automatic tuning routine and for making Tuned RF Level measurements using the IF Peak Detector Refer to the Tuned RF Level detailed operating instruction in the Operation and Calibration Manual The IF Present Detector is used to stop the LO sweep during a signal search independent of the Controller The Voltmeter also receives IF level information from the output of the Level Amplifier and Carrier Filter The IF level is measured after completion of tuning to confirm that the AM ALC loop is operating within range The IF Level measurement mode invoked by pressing the S shift and IF LEVEL keys compares the level from the Level Amplifier and Carrier Filter with the ALC reference and displays the ratio of the two normally 100 unless the IF signal is too low or Special Function 6 2 is used The voltage from the Resistor Drive Amplifier is an indication of the ALC current driving the input resistor circuit It is used for setting the Input Attenuator see Se
475. nstrument Side Cover Removal 1 Remove the two screws holding each side panel strap handle in place there is one screw at either end of each strap handle 2 Remove the strap handle caps and the strap handles 3 Slide the side panel towards the rear of the instrument and then pull it off information Card Tray Removal 1 Turn the instrument upside down 2 Remove two plastic feet from one side of the bottom cover 3 Rotate the information card tray away from the remaining two plastic feet and remove 8 13 FRONT PANEL DISASSEMBLY PROCEDURE Front Panel Assembly Removal 1 Remove the information card tray refer to Information Card Tray Removal 2 Remove the knurled nuts on the RF input Type N and the modulation output audio input BNC connectors 3 Pry up the plastic trim strip on the top of the instrument s front frame with a small screwdriver 4 Remove the three screws the channel covered by the trim strip 5 Remove the two outside screws and the center screw from the channel on the bottom of the front frame 6 Pull the front panel assembly outwards 7 To completely separate the front panel from the instrument disconnect the ribbon cable connectors and the RF cables Disassembly Procedures 8C 1 Servi ce Model 8901B 1 Keyboard and Display Assembly Removal 1 3 4 5 Remove the front panel assembly from the instrument refer to Front Panel Assembly Removal Procedure To sepa
476. ntroller also activates squelch during certain other measurement modes The signal from the FM IF Limiters also drives the Counter via the Counter IF Buffer FM Calibrator Assembly 51 The heart of the FM Calibrator is a 10 1 MHz VCO A 10 kHz trapezoidal wave is applied to the tune line of the VCO which generates FM During the calibration measurement the VCO input is switched to the upper frequency fy and the frequency is measured by the Counter Then the VCO input is switched to the lower frequency fz and the frequency is again measured The Controller calculates the peak deviation as FM fu fu 2 A measurement of residual is also made on the unmodulated VCO and entered into the calculation of the FM calibration factor The FM signal is then measured and the calibration factor is calculated and shown on the display The sensitivity of the VCO and tune voltage are designed to give approximately 34 kHz peak deviation To prevent ringing of the demodulated signal in the audio circuits the modulation signal is given a slow risetime by the Trapezoid Generator a soft limiter which receives its input from the Triangle Generator The Triangle Generator and Mode Control comparator together form a relaxation oscillator The output from the Mode Control comparator switches between a positive and negative output current The Triangle Generator an integrator generates a negative or positive ramp depending on its input When its outpu
477. o A2J1 IN CAUTION If the Modulation Analyzer is to be turned off disconnect the audio synthesizer first to prevent damage to the CMOS switches 2 Connect high impedance ac coupled oscilloscope with 10 1 divider probe to 2 4 AMPL 3 OUT 3 Set the signal generator to approximately 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT 4 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Press AM Key in 2 1 SPCL to set the audio gain to maximum The oscilloscope should show the 1 kHz sinusoidal waveform with an ac amplitude of 2 4 to 2 8 Vpp If faulty see Service Sheet 12 and check the audio path beginning at the 260 kHz Low Pass Filter at the AM output 5 Increase the synthesizer frequency to 260 kHz without altering the amplitude The waveform should have an ac amplitude of 1 2 to 1 6 Vpp If faulty see Service Sheet 12 and check the 260 kHz Low Pass Filter at the AM output as well as checking to see if the 15 kHz or gt 20 kHz are in the circuit They should be out 8D 40 Service Sheet BD4 Model 8901B Service NOTE This ts not a valid measurement of the filter bandwidth since the source impedance 15 incorrect will however show up a severe problem For a more precise test of bandwidth see Service Sheet 12 or perform Performance Test 4 Audio Filters in Section 4 6 Set the synthesizer level to 27 dBm and frequency
478. o Analog Converter DAC compensates for the small dc offset voltage generated by the Power Sensing Element when no RF is present To zero the sensor the Controller switches the Input Switch of the Sensor Module away from the Power Sensor and measures the output from the Power Meter If the output does not correspond to OW power the Zeroing Control DAC is programed to inject a current into the RF Power Sensing Element to cancel the offset To keep the Synchronous Detector in its most linear range the voltage corresponding to OW input power is offset slightly above 0 Vdc The offset voltage is subtracted out by the Controller when actual power measurements are made The DAC remains set until re zeroing is requested The Sensor Module Switch Control and Switch Drive One Shot control switching of the Input Switch in the external Sensor Module The circuitry is designed to drive latching type RF switches which may or may not have automatic drive disconnect The Power Reference Oscillator Control switches on the 50 MHz Oscillator when requested To enable the assembly of a user built sensor module the switching voltages are made available at the rear panel REMOTE CONTROL RF SWITCH connectors The rear panel FREQ OFFSET TTL OUT connector outputs a dc voltage that indicates the state of the Frequency Offset Mode and whether the entered LO frequency is above or below 18 GHz This feature is useful for controlling external microwave down converters such as
479. o Peak Detector However situations arise where the predominant component of the audio signal is filtered out by one of the active filters in the audio chain for example a 10 kHz signal into the 3 kHz Low Pass Filter Having the Absolute Peak Detector ahead of the active filters prevents such situations from overdriving the audio circuits The front panel MODULATION OUTPUT AUDIO INPUT is driven by an inverting Output Amplifier via the A52 Audio Counter Distortion Analyzer Assembly The output of this connector is always affected by audio filtering and FM de emphasis when selected Voltmeter Assembly A5 The Voltmeter consists of an average detector peak detector and a voltage to time converter The Audio Average Detector consists of a precision Half Wave Rectifier and a Summer and Filter The summer amplifier adds the input signal weighted by a factor of one to the inverted and half wave rectified input weighted by a factor of two The resultant sum is a full wave rectified output After filtering the output dc voltage is equal to the signal s rectified average The Audio Peak Detector captures the positive ac peak The Sample and Hold Switch controls the transfer of the detector s output to the Voltage to Time Converter via the Buffer Amplifier and also controls the discharging of the Audio Peak Detector Special Function 5 controls the discharge rate The voltage is actually measured by the Voltage to Time Converter The
480. o Synthes Zeb oe DONS Send datae bets iru d eo HP 3336C CSeMIOSCOBB oru oie du Rad dod heave at inb Se Se atest ER HP 1740 8640B FM IF Buffer Check 1 Perform the Input Mixer and IF Check on Service Sheet BD2 72 IF Detector Check NOTE This check assumes that the 1 FM IF Buffer Check gives positive results 1 Set the signal generator to 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT 2 Connect an ac coupled oscilloscope to rear panel IF OUTPUT Switch the input impedance of the oscilloscope to 500 or terminate the input in 500 using a tee 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 20 MHz If Error 01 appears press MHz again Key in 1 3 SPCL to set the attenuation range to 20 dB Adjust the signal generator level for a 100 mVpp waveform on the oscilloscope 4 Key in 49 S Shift 3 SPCL This causes the IF level to be displayed The display should read between 0 85 and 0 95 If it does not see Service Sheet 9 and check the IF Peak Detector 5 Switch signal generator s RF off 6 Press CLEAR to clear the IF Present Latch Key in 0 0 S Shift 4 SPCL The display now reads the IF Present status The display should read 000000 0000 If faulty see Service Sheet 9 and check the IF Present Detector 7 Switch the signal generator s RF on The display should read 000001 0000 indicating that I
481. o the output of Stage 2 and sends a series of pulses to Stage 1 via Count Pulse Switch 1 while looking for an overflow from Stage 4 Again by knowing the number of pulses sent to Stage 1 the Controller can calculate the accumulated count from Stages 1 and 2 The count from the main Counter is also read back by the Controller Knowing the counts of the Audio and main Counters including overflows the Controller calculates and displays the signal frequency Service Sheet BD4 8D 39 Service Model 8901B TROUBLESHOOTING General Procedures for checking the Audio Section of the instrument are given below The blocks or points to check are marked on the block diagram by a hexagon with a check mark and a number inside for example 73 Before performing any check perform all the checks on Service Sheet BD1 CAUTION Tighten SMC connectors to 0 6 m 5 in lb Hand tightening of connectors is insufficient Hand tightened connectors can work loose and cause reduced performance or malfunctions Equipment Audio SonthesiBel NOR ou 8386 sissies PES ween 1740 e EU d 8640 71 Audio Filters and Gain Check 1 Set the audio synthesizer to 1 kHz at 17 dBm The synthesizer output impedance should be 500 Connect its output t
482. of the CPU 1309 Three of the enable lines e0 e1 and e2 are decoded by the Enable Decoder A13U11 to activate one of eight unique enable lines e 0 to e 7 The fourth line e3 enables the decoder itself The enable lines run to various instrument sections Typically each line is dedicated to a specific section or operational function for example enable line e 1 controls audio related functions in the Audio Section The select 0 to 3 and data 40 to 43 lines come from I O ports 00 to 07 The eight lines run in parallel to all sections of the instrument where they are decoded on the assemblies In the RF Section Service Sheet BD5 8D 49 RU Service Model 8901B one assembly the A20 LO Control Assembly decodes the Instrument Bus for the entire section Up to 16 data codes for each of the 16 select codes are possible for each active enable line The select code typically selects a functional category on an assembly and the data code selects the specific function or configuration On a given assembly the select codes are decoded only while the corresponding enable line is active The data codes are in turn decoded and latched only when triggered by the decoded select line T he latched data drive the digital to analog devices which control the instrument hardware On the schematic diagrams the lines leaving the I O ports of the CPU are labeled with a mnemonic such as s2 L for I O line 02 The s indicates a select code 2
483. off the Sweep Current Source With no input to the Tune Integrator and Amplifier the HF VCO will remain approximately tuned to the input signal and the frequency of the LO and thus the input can be determined by the Controller Once the signal has been found after a sweep of all octaves it is found four more times by sweeping just the octave where it was first found and two octaves above it This is necessary in case the signal has AM which was in a deep trough when the fundamental of the LO passed through and was out of the trough when the strong third harmonic of the LO passed through 9 Paw Counter 1 AND AMPLIFIER VCO DIGITAL TO ANALOG RTER gt Figure 8D 3 LO Configuration HF VCO Sweep Having now found an input signal the Controller manipulates the LO through a series of tuning sequences to search for the fundamental of the input that was found Once the fundamental of the input signal is identified the LO is tuned to approximately 1 5 MHz above that signal The Controller then accurately counts the LO and the IF and thus determines the frequency of the input signal Signal frequency LO frequency intermediate frequency Service Sheet BD1 8D 7 Service Model 8901B At this point the LO is configured as in Figure 80 1 and the tuning continues as in the manual tune mode using the computed frequency in place of a keyboard entered frequency Automatic Tuning and Signal Tracking In the trac
484. om Cover Removal UE a IIO aU th a De Qo eft UAE d 8C 1 Side Cover Removals re RR QUE bu SU e dede 286 1 Information Tray Removal oa ow EA Ee SH SRE RE 8C 1 Front Panel Disassembly Procedure 2 99 24 dea NTC ew EOE dk woes 8C 1 Front Panel Assembly Removal 8C 1 Al Keyboard and Display Assembly Removal 8 2 Front Dress Panel and Display Window Removal 8C 2 Replacement of Pushbutton Switches and Annunciator LEDs 8C 2 Service Sheet BD1 Overall Block Diagram 8D 1 Service Sheet BD2 RF Block 80 15 Service Sheet BD8 IF Block Diagram 80 25 Service Sheet BD4 Audio Block Diagram 2 80 37 Service Sheet BD5 Digital and Power Supply Block 80 47 Block Diaeram PoldoutS he ee eee CUN GG bw 8E 1 rev OSJUL91 Model 8901B Replaceable Parts Section 6 REPLACEABLE PARTS 6 1 INTRODUCTION TO THIS SECTION This section contains information for ordering parts Table 6 1 lists reference designations and Table 6 2 lists abbreviations that are used in the Replaceable Parts List Table 6 3 lists all replaceable parts in the ins
485. onal To use the Power Up Checks remove the top cover remove any jumpers that may be on the four TEST test points and D A13 Controller Assembly remove any signal at the INPUT and switch POWER to STBY for five seconds to discharge the supplies and back to ON Observe the four TEST LEDs on the top of the Controller Assembly as the instrument powers up The LEDs should light the following sequence 1 Indeterminate for about 1 4 second 2 1 for about 2 seconds 3 2 for about 1 second 4 4 for about second 5 8 4 2 1 for about 10 seconds 6 1 with 1 blinking indefinitely until a key is pressed The Power Up Checks proper begin at step 2 and are carried out in the following order 1 Front Panel Annunciator Check All front panel LEDs and display segments and decimal points are lighted and remain so throughout the tests that follow and for a few seconds afterwards Failure of one or more LEDs or display segments to light indicates that the respective components or drive circuits have failed See Service Sheets 26 and 27 2 Read Only Memory Check The checksum of each of the read only memories ROMs is read and compared against a stored reference stored in ROM 1 This is similar to issuing a series of 52 N SPCL commands see Service Special Functions paragraph 8 7 When a wrong checksum is found the four TEST LEDs blink for one second with the binary code of t
486. one found in its normal scan See Service Sheet 25 Two simple programs for displaying the key codes on a computing controller are shown in Table 8B 3 Removal of the top and bottom covers is unnecessary The Modulation Analyzer is assumed to have HP IB address 14 NO KEY PRESSED 99 31 60 61 62 63 44 8 27 56 57 58 59 C22 23 82 83 82 68 Figure 8B 3 Key Codes for Key Scan Service Special Function 60 Table 8 3 Key Scan Programs HP 9825A HPL HP 85A BASIC 0 rem 714 110 7 10 REMOTE 714 1 wrt 714 60 05 20 LOCAL LOCKOUT 7 2 red 714 A 30 OUTPUT 714 60 0SP 3 dsp A 40 ENTER 714 4 jmp 2 50 DISP A 5 end 60 GOTO 40 70 END 8B 12 Special Functions Model 8901B Service 61 N Display HP IB Status Displays the status of the HP IB lines selected by N The display is in binary See Service Sheet 28 for troubleshooting and a complete list of HP IB mnemonics N 0 N 1 N 2 N 4 N 5 NOTE Information within pointed brackets appears on the Measuring Receiver s display lt Addressed to Talk gt lt Addressed to Listen gt This function reads back and displays the present state of the Talk and Listen Address flip flops A14U16A and B For example if the display shows 1 0 the Modulation Analyzer is addressed to talk and unaddressed to listen This means the Talk Address flip flop is set and the Listen Address flip
487. onverter When the audio frequency function is selected the 10 MHz reference is counted as for the Voltmeter function The Stop Count switch however is now controlled by the Counter Control Logic of the Audio Counter AM and FM Calibrators The FM Calibrator consists of a 10 1 MHz VCO which toggles between two frequencies at a 10 kHz rate Selecting the FM Calibration mode initiates a sequence of measurement cycles During a measurement cycle the VCO is measured by the Counter at the upper frequency and then measured at the lower frequency The Controller then computes the deviation one half the difference between the two frequencies The Controller then allows the FM Source to toggle at its 10 kHz rate When the signal from the CALIBRATION AM FM OUTPUT is connected to the INPUT of the Modulation Analyzer either directly or through a Sensor Module the FM on the calibrator signal is measured and the FM calibration factor the ratio of the measured FM to the computed is displayed The AM Calibrator receives its input from the output of the 10 1 MHz VCO of the FM Calibrator which is not toggled during AM calibration This signal is limited and applied to the Amplitude Modulator The AM Source toggles the modulator at a 10 kHz rate between a nominal level and twice that level to produce 33 AM To enhance the accuracy of the calibrator measurements are made at the output of the modulator with the Amplifier Detector while the AM Source is
488. or display segments fail check the respective components and drive circuits See Service Sheets 26 and 27 Also check the CPU I O port See Service Sheet BD5 Measurement Error Check Procedure Key in 43 1 SPCL to enable Service Errors Make the measurement in which the fault appears Normal Indication As the Special Function code is entered 43 1 should appear in the display This indicates that the Controller responds to keyboard interrupts After pressing the SPCL key measurements should proceed as normal If Indication Abnormal If the keys have no effect check the Keyboard interrupt See Service Sheet 25 If the keystrokes produce an erroneous display check the Keyboard See Service Sheet BD5 If the measurement is improper or error messages appear in the display consult the error message tables see Error Messages in the Detailed Operating Instructions of the Operation and Calibration Manual or see Error Messages paragraph 8 8 or see Error Codes in the Operating Information pullout card or consult the block diagram service sheet that documents the section of the instrument that appears to have the fault See Service Sheets BD2 through BD5 NOTE For problems that are exclusive to the HP IB see Service Sheet BD5 Service Sheet BD1 8D 13 Model 8901B Service BLOCK Service Sheet BD2 e PRINCIPLES OPERATION General The RF Block Diagram documents the Power Meter Po
489. ors vs Parity Check 1 Perform the Power Up Checks on Service Sheet BD1 Distortion Analyzer Check 1 Set the audio synthesizer to 1 kHz at 1 Vrms into a high impedance Connect its output to A52J1 AUDIO IN 2 Connect an ac coupled high impedance oscilloscope to the MODULATION OUTPUT AUDIO INPUT 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument The 1 kHz audio signal should be displayed with an amplitude between 2 6 and 3 0 Vpp If faulty see Service Sheet 16 and check the Internal External Source Switch Service Sheet BD4 8D 43 Service 10 11 12 13 Model 8901 Readjust the level from the synthesizer a display of 3 Vpp Key in 30 0 SPCL to set the instrument to measure External Audio RMS Level The 1 kHz signal should disappear If faulty see Service Sheet 16 and check the Internal External Source Switch Connect the oscilloscope to A52TP4 BUF OUT Connect the synthesizer to the MODULATION OUTPUT AUDIO INPUT The 1 kHz audio signal should be displayed with an amplitude between 2 8 and 3 2 Vpp If faulty see Service Sheet 16 and check the Audio Input Buffer Connect the oscilloscope to A52TP2 AMPL 1 OUT Key in 2 3 SPCL to assure that the 20 dB attenuator of Amplifier 1 is in The amplitude of the displayed audio signal should be between 2 8 and 3 2 Vpp If faulty see Service Sheet 16 and check Amplifier 1 and the Notch Select Swit
490. oscope to ASTP4 AVG OUT Check the dc reference of the oscilloscope The level on the oscilloscope should be 660 to 760 mVdc If faulty see Service Sheet 14 and check the Average Detector 6 Connect oscilloscope to rear panel RECORDER OUTPUT Key in 49 0 S Shift 0 SPCL to switch the output of the Audio Peak Detector to the RECORDER OUTPUT The level on the oscilloscope should be 0 9 to 1 1 Vdc If faulty see Service Sheet 14 and check the Audio Peak Detector Also check the Input Selectors to the Voltage to Time Converter see Service Sheet 15 7 Remove then reconnect the synthesizer output The waveform should drop and rise in a step like manner in less than one second If faulty see Service Sheet 13 and check the Sample and Hold Switch 8 Key in 5 1 SPCL to set the Audio Peak Detector time constant to slow Again key in 49 0 S 0 SPCL Repeat step 7 above The decay and rise time should be about two seconds Voltage to Time Converter Check 1 Key in 50 3 SPCL This causes the 5V supply to be displayed The display should read 2 85 to 3 15 If faulty see Service Sheet 15 and begin troubleshooting with the Voltage to Time Converter 2 Check the Input Selectors by keying in the Service Special Functions listed for 49 N and 50 N Consult Service Special Functions in Special Functions paragraph 8 7 for more information If any reading seems faulty when the input is known to be good see Service Sheet 15 and check the Input Select
491. ou 5i oo SS eS I Ch yhp Qni LLLLIKI Replaceable Parts Mfr Part Number 30D506G025CC2 0160 0134 150D685X9035B2 0160 2055 0160 2055 0160 3879 150D225X9020A2 150D225X9020A2 1901 0040 1801 0040 1N4150 1901 0040 1901 0040 1901 0040 1901 0040 1 4 150 9140 0137 9100 1633 9140 0137 08901 00021 ORDER BY DESCRIPTION 2N2222A MF4C1 8 TO 1902 F C4 1 8 2502 F C4 1 8 10 4502 F CA 1 8 T0 2262 F 0698 6343 CA 118 TO 1252 F CA 1 8 T0 1001 F 1 8 10 2611 4 1 8 0 2612 C4 1 8 TO 3832 F CA4 1 8 TO 8251 F C4 1 8 T0 8251 F 1 8 10 5114 4 1 8 0 8251 A Errata part change 6 17 Qty 21 NN 12 Replaceable Parts Reference HP Part Designation Number D 15 16 0757 0442 9 A3R17 0757 0465 6 ASR18 0757 0438 3 A3R19 0757 0442 9 A3R20 0757 0438 3 A3R21 0683 2265 1 22 0757 0279 A3R23 0757 0438 3 A3R24 A3R25 0757 0442 9 26 0698 7236 7 A3R27 2100 3273 1 A3R28 0698 3156 2 2314A 2505A 29 0698 8046 9 2514 AND ABOVE ASR29 0698 6942 0 A3R30 0698 7264 1 A3R31 0698 8191 5 A3R32 0698 7643 0 A3R33 0699 0069 2 A3R34 0698 8642 1 A3R35 0698 8731 9 2314 2505 AIR36 0698 6614 3 2514 AND ABOVE AIRE 0698 8307 5 A3R37 0698 7643 0 A3RS38 0698 8731 9 A3R39 0698 7251 6 0698 7224 3 A3R41 0698 3157 3 2 A3R43 0698 8731 9 A3R44 0698 8731 9 5 0698 8731 9 AIRG 0698 8731 9 A3R47 0698 8731 9 A3R
492. ould read 100000041 If faulty see Service Sheet 23 and check the Input Selector Remove the jumper cable Short Al1TP1 GND to A11TP6 VM GATE Key in 46 2 SPCL This switches the Counter to measure the 10 MHz time base reference via the Voltage to Time Converter input The display should read 1000000 1 If faulty see Service Sheet 23 and check the Input Selector and Voltmeter Gate logic Service Sheet BD5 8D 53 Service Model 8901B Controller Kernel Check 8D 54 CAUTION MOS and CMOS ICs can be damaged by static charges and circuit transients Do not remove the A18 Controller Assembly or the A14 Remote Interface Assembly from the instrument while power is applied Discharge the board and replacement IC to the same potential Use a conductive foam pad such as provided in the Service Accessory Kit HP 08901 60089 When unplugging ICs place the board on a conductive pad When the IC is unplugged insert it into the foam also A13 also contains a soldered in battery To prevent shorting out the battery do not lay the board on a metal surface Severai ICs on these assemblies are held in high grip sockets Both the socket and the device can be damaged if an attempt is made to remove the device with an IC extraction tool The recommended procedure is to first ground the tip of a small blade type screwdriver then slide the tip between the IC and the socket and slowly pry up the IC one pair of pins at a time 1 Swi
493. outputs Note amplifier symbol with depen dency notation should be read to indicate unilateral switching Coder Input code X is converted to output code Y per weighted values or a table The following labels are to be used as necessary to ensure rapid identification of device function Multiplexer The output is dependent only on the selected input Demultiplexer Only the selected output is a function of the input Central Processing Unit a SS SS Model 8901 Service Table 8 6 Schematic Diagram Notes 6 of 11 DIGITAL SYMBOLOGY REFERENCE INFORMATION Sequential Logic Functions 1JL Monostable Single shot multivibrator Output becomes active when the input be comes active Output remains active even if the input becomes inactive for a period of time that is characteristic of the device and or circuit G Oscillator The output is a uniform repetitive signal which alternates between the zT US high and low state values If an input is shown then the output will be active if an only if the input is in the active state FF Flip Flop Binary element with two stable states set and reset When the flip flop is set its outputs will be in their active states When the flip flop is reset its outputs will be in their inactive states Toggle Input When active causes the flip flop to change states 5 Set Input When active causes the flip flop to set R Reset Input When active causes
494. ower measurements New hardware and firmware Change 17 below must also be added to implement this feature Compatibility with all other measurements is maintained 4 Software date code 304 1985 2551A only ROM part numbers ROM 1 08901 80081 ROM 2 08901 80082 ROM 3 08901 80083 Change 7 increases digital averaging to reduce display bounce during noisy SINAD measurements Special Function 5 1 Change 11 adds Special Function 31 which corrects for the noise floor when using the average detector in Tuned RF Level on the lowest range Special Function 31 0 disables the noise floor correction Special Function 31 1 enables the noise floor correction Special Function 31 2 displays the noise floor correction status Change 13 adds Special Function 7 4 to increase the display resolution of RF frequency to 0 1 Hz below 10 MHz and 1 Hz above 10 MHz Change 14 improves the repeatability of the Set Reference feature in Tuned RF Level by averaging several readings when computing the calibration reference Change 15 extends the frequency offset mode range to 200 GHz Change 16 adds Special Function 47 which displays certain instrument configuration details for troubleshooting purposes After keying in 47 0 SPCL the display will be of the form New Opt Series 030 Old Opt Series 030 where 1 is yes and 0 is no The new Option Series 030 refers to instruments with serial prefix 2642A and above old refers to older versions of the HP 890
495. placeable Parts Reference HP Part inti Mfr Designation Number D Qty Description Code Mfr Part Number A13 08901 60196 SERIAL PREFIX 2804A AND ABOVE A13 08901 60196 4 1 CONTROLLER ASSEMBLY 28480 08901 60196 A13BT1 1420 0322 2 BATTERY 2 8V 2A HR PIN 28480 14200322 08901 00195 6 1 BATTERY INSULATOR 28480 08901 00195 13 1 0180 0116 1 1 CAPACITOR FXD 6 8UF 10 35VDC 56289 150D685X9035B2 A13C2 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A13C3 0160 4835 7 CAPACITOR FXD 1UF 10 50VDC CER 28480 0160 4835 A1Y3CA NOT ASSIGNED 13 5 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 A13C6 0160 4835 7 CAPACITOR FXD 1UF 10 SOVDC CER 28480 0160 4835 A13C7 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 13 8 NOT ASSIGNED 13 9 NOT ASSIGNED A13C10 0160 4832 4 CAPACITOR FXD O1UF 10 100VDC CER 28480 0160 4832 13 11 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A13C12 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 AI3C13 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC TA 56289 150D225X9020A2 13 14 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 13 15 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 A13C18 0160 4832 4 CAPACITOR FXD 01UF 10 100VDC CER 28480 0160 4832 13 172 0180 0100 3 CAPACITOR FXD 4 7UF 10 35VDC 28480 0180 0100 13 18 0180 0291 3 CAPA
496. pply line 15 normally grounded when the instrument is in standby The 15V Supply unswitched LED should remain lighted when the POWER 15 set to STBY 2 Remove the plugs connected to A26J6 RF SECTION A26J3 DIGITAL SECTION and A26J2 AUDIO SECTION one at a time and observe the five power supply LEDs The plugs are located on the circuit side of the A26 Power Supply Motherboard An extinguished LED will light when the short is removed from the supply The assemblies in the faulty section can then be removed one at a time until the one with the short is discovered 3 Remove the plug connected to A26J1 KEYBOARD This plug is on the component side Jumper pins 2 and 6 of A26J1 where the green and black wires of W13 normally connect to turn the instrument on If the short is on the Al Keyboard and Display Assembly the extinguished LED will light If the short still persists see Service Sheets 31 and 32 and check the faulty regulator 20 60 Service Sheet BD5 Model 8901B Service CHANGES serial prefixes On the Block Diagram Replace the RF INPUT portion of the schematic with the partial on page 8E 2 1 BD 1 8E 2 IT A Lag O d NOO 18 4M RF BLOCK RF INPUT 20 dB HiGH PASS INPUT INPUT INPUT PROTECTION ATTEN FILTER ATTENUATOR MIXER R O I 2 e DeTEcToRy RE L BE DETECTOR THIS PAGE QVERPOWER nae Ee A DECODERS AND LATCHES A
497. prevents data access for read or write operations and the Battery supplies power to the RAM and associated circuits The CPU interprets bytes from the ROM as data or instructions depending on the context of the program If the byte is an instruction the outcome depends on the nature of the instruction A simple instruction such as add or shift is executed immediately and the instruction in the next address is fetched More complex instructions fetch additional data or instructions from following addresses and in the case of jumps and subroutine calls cause program execution to move to another location in memory When a front panel key is pressed an interrupt is generated The interrupt causes program execution to jump to a specified address where the interrupt service subroutine is located The subroutine interrogates the Keyboard to determine which key was pressed and then takes the appropriate action HP IB codes and commands interrupt the Microprocessor in a similar way The CPU communicates with the SMI and PIO through the ROM Control ROMC lines and the Data Bus The CPU manipulates data arithmetic and logic computations and contains the clocking and control circuitry The clock is normally derived from the Counter s Time Base Reference however if the clock fails to an open circuit or if the Counter Assembly is unplugged a clock internal to the CPU will continue to generate clock pulses The SMI interfaces with the external ROM
498. r to your instrument rev 12NOV92 For additional important information about serial numbers refer to INSTRUMENTS COVERED BY THIS MANUAL in Section 1 Fourth Edition This material may be reproduced by or for the U S Government pursuant to the Copyright License un der the clause at DFARS 52 227 7013 APR 1988 Copyright O HEWLETT PACKARD COMPANY 1987 EAST 24001 MISSION AVENUE TAF C 34 SPOKANE WASHINGTON U S A 99220 Service Manual Volume 1 2 3 HP Part 08901 90114 Other Documents Available Operation and Calibration Manual HP Part 08901 90113 Basic Operation and Application Guide 08901 90117 Microfiche Operation and Calibration Manual HP Part 08901 90115 Microfiche Service Manual HP Part 08901 90116 Printed in U S A April 1995 Kip HEWLETT PACKARD 1 Regulatory Information Updated March 1999 Regulatory Information Updated March 1999 Safety Considerations GENERAL This product and related documentation must be reviewed for familiarization with safety markings and instructions before operation This product has been designed and tested in accordance with Publication 1010 Safety Requirements for Electronic Measuring Apparatus and has been supplied in a safe condition This instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the product in a safe condition SAFETY EARTH GROUND A uninterruptible
499. rate the Al Keyboard and Display Assembly from the front dress panel MP14 and sub panel 15 first remove the Keyboard and Display insulator MP48 by unscrewing the four pan head screws and removing the washers and spacers which hold it in place Remove the six remaining screws and washers which fasten the Al assembly to the sub panel Disconnect the front panel LINE switch S3 jumpers at the Al assembly Separate the Al assembly from the front dress panel and sub panel Front Dress Panel and Display Window Removal 1 2 3 Remove front panel assembly from the instrument refer to Front Panel Assembly Removal Procedure To remove the front display window MP40 remove the three retaining clips and slide the screen straight up towards the top edge of the front sub panel To remove the front dress panel MP14 remove the front panel jacks if present and slide the dress panel downward toward the bottom edge of the front panel The bottom edge of the front dress panel will have to be pulled out slightly to allow for clearance of the LINE switch REPLACEMENT OF PUSHBUTTON SWITCHES AND ANNUNCIATOR LEDS 8C 2 Key Cap Replacement To replace a front panel pushbutton key cap pull it off and snap on a new one You will have to either remove the Keyboard from the Front Panel Assembly refer to Front Panel Disassembly Procedure or carefully use a pair of pliers to remove the keycap NOTE Watch the angular position
500. re Analy Zen oce PUES aks c Era HP 5005A EET T EE aie me E TII III HP 3455A Vi Time Base Reference Check 1 2 3 Disconnect any input to the rear panel TIME BASE 10 MHz INPUT Connect high impedance dc coupled oscilloscope to A11J5 INT 10 MHZ OUT The waveform should be a TTL square wave with a period of 100 ns If faulty see Service Sheet 22 and check the 10 MHz Time Base Reference Oscillator Check A11TP4 TB with an oscilloscope The waveform should be TTL pulses with a period of 160 If faulty see Service Sheet 22 and check the Time Base Divider 72 Counter Check NOTE This check assumes that the 71 Time Base Reference Check give positive results For Option 002 disconnecting the cable from the time base reference halts the Controller Connect a jumper cable between A11J5 INT 10 MHZ OUT and 1141 8 IN Key in 46 4 SPCL This switches the Counter to measure the HF VCO divided by 8 The display should read 1000000 1 If faulty see Service Sheet 23 Disconnect the jumper from A11J1 and connect it to A11J3 IF IN Key in 46 2 SPCL This switches the Counter to measure the IF The display should read 1000000 1 If faulty see Service Sheet 23 and check the Input Selector Disconnect the jumper from A11J3 and connect it to A11J2 10 MHZ IN Key in 46 3 SPCL This switches the Counter to measure the output of the FM Calibrator The display sh
501. re troubleshooting tests block and schematic diagrams and principles of operation 8 2 HOW THE SECTION 15 ORGANIZED Section 8 is contained in this and two other volumes as Volume 2 e General Service Information Safety Considerations Service Tools and Aids _ General Troubleshooting Information Assembly and Service Sheet Cross Reference Index Assembly Locations Schematic Diagram Notes e Service Aids Special Functions Error Messages Power Up Checks Controller Test LEDs and Test Points Signature Analysis e Disassembly for the front panel e Block Diagram BD Theory and Troubleshooting The circuit descriptions and troubleshooting procedures for all the block diagrams e BD1 through BD5 Block Diagrams Block Diagrams foldouts for the Modulation Analyzer Volume 3 e Schematic Diagram Theory and Troubleshooting Circuit descriptions and troubleshooting procedures for Service Sheets SS 1 through 34 Volume 4 e SS1 through 5535 Schematic Diagrams Schematic Diagrams foldouts and Component Locator Diagrams for the Modulation Analyzer e SSA Summary Service Special Functions and Error Message Summary e SSB and SSC Summary Direct Control Special Function Summary 8 1 Service Model 8901B 8 3 8A 2 SAFETY CONSIDERATIONS Before Applying Power Verify that the instrument is set to match the available line voltage and that the correct fuse is installed An uninterrupted safety earth ground must be provided from the mai
502. red or destroyed by contact or mere proximity of a static charge The results can cause degradation of device performance early failure or immediate destruction These charges are generated in numerous ways such as simple contact separation of materials and normal motions of persons working with static sensitive devices When handling or servicing equipment containing static sensitive devices adequate precautions must be taken to prevent device damage or destruction Only those who are thoroughly familiar with industry accepted techniques for handling static sensitive devices should attempt to service circuitry with these devices In all instances measures must be taken to prevent static charge build up on work surfaces and persons handling the devices i SSS SS LLL Model 8901B Volume 1 Table of Contents VOLUME 1 TABLE OF CONTENTS SECTION 6 REPLACEABLE PARTS Introduction To This 6 1 Reference Designators and 5 6 1 Replaceable Parts List 2552915 e bon m veu X o IE iode Rex 6 1 Ordering PariS ENDE 6 1 Replaceable Parts List Updating Manual 6 2 Mechanical and Chassis Part Locations and Reference Designations 6 2 Recommended Spares 1455 6 2 7 INSTRUMENT CHANGES int
503. required rated current and of the specified type normal blow time delay etc are used for replacement Do not use repaired fuses or short circuited fuseholders To do so could create a shock or fire hazard is a Lithium battery The following procedure is recommended for its disposal Discharge by soldering 50 resistor across both battery terminals Complete discharge will occur after one year at 25 C Under Resource Conservation Recovery Act RCRA regulations the com pletely discharged battery is considered nonhazardous However the user must be responsible for individual state regulations for battery disposal CAUTION Do not unplug any boards in the Modulation Analyzer unless the instru ment 15 unplugged or switched to STBY standby Some boards contain devices which can be damaged if the board is removed when the power ts on Use conductive foam when removing MOS devices from sockets Use care when unplugging ICs from high grip sockets Model 8901B Service 8 4 SERVICE TOOLS AIDS AND INFORMATION Service Accessory Kit The Service Accessory Kit HP 08901 60287 contains extender boards extender cables and other items needed for servicing the Modulation Analyzer The extender boards have a height that matches the assembly extrusions and for 12 pin connectors improves the mechanical stability of the extended assembly The kit contains a special Digital Test Extender Board HP
504. rly tuned The No HF VCO Detector lights the NO HF VCO annunciator if the amplitude of the signal from the HF VCO is too low The 700 MHz Low Pass Filter in the Sampling Bridge input line filters out harmonics of the HF VCO to assure proper sampler gain LO Control Assembly A20 The LO Control Assembly contains the digital decoders and latches for the entire RF Section that is the section housing assemblies A15 through A24 and the low frequency analog circuits that control and tune the LO Service Sheet BD2 8D 19 Service 8D 20 Model 8901B The Digital to Analog Converters DACs drive either the LF VCXO through the LF VCXO Tune Amplifier or the HF VCO through the DAC Control Amplifier and HF VCO Tune Integrator and Amplifier The DAC outputs a current proportional to the weighting of the bits of its digital input The amplifiers following the DAC convert the current into a tune voltage The LF VCXO Tune Filter filters the tune line of the LF VCXO to reduce phase noise in the low noise phase lock mode The filtering is necessary because the tune line input is external to the phase lock loop The Sweep Down Current Source sweeps the HF VCO when the Controller searches for the input signal The Sweep Up Current Source is the retrace for the sweep The Track Loop Amplifier is used only in the track tune modes Its input is the dc output from the FM Demodulator which is proportional to the IF center frequency If the input signal
505. rms to dc coverter e Various service related voltages not shown The output from the Input Selector is always present at the rear panel RECORDER OUTPUT connector Normally the output is constantly switching between inputs but by means of special functions any of the measurement results can be selected and held This feature is especially useful for making precise RF power measurements Service Sheet BD1 Model 8901B Service Audio Distortion Analyzer The input to the Distortion Analyzer is selected by the Output Switch The input can be either the internal demodulated RF signal or an audio signal input to the front panel MODULATION OUTPUT AUDIO INPUT connector The distortion measurement is limited to audio signals with a frequency of 400 Hz or 1 kHz The distortion measurement consists of measuring the rms level of the total audio signal then remeasuring the signal after it passes through a notch filter that removes the fundamental of the signal leaving the distortion components hum and noise Both measurements use the RMS to DC Converter to obtain true rms measurements The dc level from the RMS to DC Converter is measured by the Voltmeter The Post Notch Amplifier and the Audio Amplifier optimize the signal level into the RMS to DC Converter The Controller computes the distortion as the ratio of the output of the Notch Filter to its input with corrections made to account for amplifier gain In the SINAD measur
506. roduction to This Section 44 aw vor 604 Rd adii 7 1 Firmware Change Summary 2314 to 2644 7 1 SECTION 8 SERVICE Introduction to T bis Section 5322 8A 1 How This Section is Organized OE eas 8 1 palety Consideratiotis eal Ge eer heck ex ue d dos 8 2 Before Applying Power 2 2 8 2 Se hte os eh Ss 2 Service Tools and Aids dom uox ae Se ee ced we cece Se he COE deed 8A 3 Service ACCOBSOPY ue icu etes Ws de do ER ERU 8 3 Bo To TOS T 8 4 Assembly Locations wok d ESOS Bes 4 Parts and Cable Locations 5 Other Service Documents 2 5 see ate do t Wee Rep EORR RE RO So BE 8 5 Recommended Test Equipment and Accessories 8 5 General Troubleshooting oe 8 5 Operator adea eae te ctr E ii e Ss 8A 5 Operation Our OL VE uer es ue Bed uo 8 5 Catastrophe Faures
507. rresponding attenuator 8D 34 Service Sheet BD3 Model 8901B 10 11 12 13 Service Table 80 13 Attenuation Stepping Step 6 Direct Control Display Limits Attenuator Special Function Minimum Maximum 0 250 0 255 0 253 0 257 0 2EB 0 250 0 2 Key in 0 2E7 SPCL and 50 6 SPCL Increase the signal source frequency until the display drops to 1 0 Record the signal source s frequency Decrease the signal source frequency until the display rises to 2 0 then drops to 1 0 Note the signal source s frequency The difference between this frequency and the frequency in step 7 should be between 33 and 55 kHz If faulty see Service Sheet 7 and check the Second Channel 1 Filter Key in 0 25F SPCL to select channel 2 Key in 50 6 SPCL Set the signal source frequency to 455 kHz then fine tune the source to peak the signal on the Modulation Analyzer s display Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The display should read between 1 5 and 2 5 If faulty see Service Sheet 7 and check Second Channel 2 Filter Set the signal source level for a Modulation Analyzer display of 2 00 Increase the signal source frequency until the display drops to 1 0 Record the signal source s frequency Decrease the signal source frequency until the display rises to 2 0 then drops to 1 0 Note the signal source s frequency The difference between this frequency and the freq
508. rrupted after A6 Assemblies A50 to A55 replace assemblies A7 to 9 Assemblies A13 and A14 have color coded board extractors For example assembly A13 has a brown left extractor and orange right extractor Thus the color code of A13 is 13 Assembly A1 is part of the front panel assembly of the instrument Instruments with serial prefixes 2642A and above have slots for assemblies A71 and 72 sandwiched between 11 and 13 Switch 54 is behind A14 Assemblies A71 and A72 and switch S2 enable the HP 8901B to be fitted with Option Series 030 Selective Power Measurements 8 4 Model 8901B Service Parts and Cable Locations The locations of individual components mounted on printed circuit boards or other assemblies are shown adjacent to the schematic diagram on the appropriate service sheet The part reference designator is the assembly designator plus the part designator For example A6R9 is resistor R9 on the A6 assembly For specific component descriptions and ordering information refer to Table 6 3 Replaceable Parts in Section 6 Chassis and frame parts as well as mechanical parts and cables are identified on Figures 6 1 through 6 6 Major mechanical parts have reference designations that begin with the letters MP Other mechanical parts such as screws are listed in the replaceable parts list below the part to which they fasten To find the part number and description of a mechanical part find the part in one of the figures in Sec
509. rt Number 08901 00109 2190 0008 ORDER BY DESCRIPTION 2N3251 MPQ2906 2N3251 18540404 2N439 1 2 5114 1854 0404 1854 0404 2N2907A 2N3251 2 3904 2 3251 2N2219A 1854 0404 1854 0404 pori ange 6 35 oo o ono a ees eS eee Se Inl 400 6 36 Replaceable Parts Model 8901B Table 6 3 Replaceable Parts Reference HP Part C Q Mfr k ty Description Mfr Part Number Designation Number D y P Code is A6Q17 1855 0082 2 1 TRANSISTOR J FET D MODE S 28480 1855 0082 A6Q18 1853 0281 9 TRANSISTOR PNP 2 2907 S 18 400MW 04713 2 2907 6019 1854 0477 7 TRANSISTOR NPN 2N2222A SI 18 PD 5 04713 2 2222 A6Q20 1853 0007 7 TRANSISTOR PNP 2N3251 SI TO 18 360MW 04713 2 3251 ASQI 1854 0404 0 TRANSISTOR NPN SI TO 18 PD 360MW 28480 1854 0404 6022 028 ASSIGNED 6029 1854 0477 7 TRANSISTOR NPN 2 2222 SI TO 18 PD SOOMW 04713 2 2222 A6Q30 1854 0404 0 TRANSISTOR NPN SI 18 PD 360MW 28480 1854 0404 6031 18530281 9 TRANSISTOR 2N2907A 18 400 04713 2 2907 A6R1 0757 1108 6 1 RESISTOR 300 196 125W TC 0 100 24546 4 118 0 301 6 2 0698 3157 3 RESISTOR 19 6K 1 125W TC 0 100 24546 C4 1 8 T0 1962 F A6R3 0698 2446 3 RESISTOR 383 1 125W TC 0 100 24546 C4 1 8 T0 383R F AGRA 0698 3447 4 6 RESISTOR 422 1 125W TC 204 100 24546 4 1 8 10 4228 ASRS 0757 0
510. rument To enter a Special Function enter the Special Function code usually a prefix decimal and suffix then press the SPCL key The Special Function code will appear on the display as it is being entered If a mistake is made during entry of the Special Function code press the CLEAR key and start over When a Special Function is entered the light in the SPCL key will usually go on if it is not already on The readout on the display will depend on the Special Function entered The readout may be a measured quantity an instrument setting a special code or in some cases the display is unaltered Special Functions can be entered from the HP IB by issuing the Special Function code followed by the code SP or sp The Special Functions are grouped by prefix range as follows 0 Direct Control Special Functions These functions are used for service They halt the functioning of the Controller and configure the instrument hardware as dictated by the suffix All software safeguards are relinquished 1 39 User Special Functions These functions are used during normal instrument operation when a special configuration measurement or information is required Many of the instrument safeguards remain implemented More information on User Special Functions can be found under Special Functions in the Detailed Operating Instructions in Section 3 and on the Operating Information pull out cards 40 99 Service Special Functions These functions are
511. rvice Sheet BD2 when the ALC is on When the ALC is off the Input Attenuator is set using the IF Peak Detector for FM or the level read on the IF AVG Level line for AM FM Demodulator A4 The signal from the FM IF Buffer drives the FM IF Limiters The limiters strip AM and noise off the IF to minimize demodulation of AM by the FM Demodulator called incidental FM The three stages each have 22 dB of gain The output of the limiters is a squarewave which drives a Precision Limiter This limiter clamps the upper and lower levels of the squarewave to highly stable references required by the Charge Count Discriminator For each cycle of the IF signal the discriminator passes a fixed quantity of charge through the feedback resistor of an amplifier The voltage developed at the amplifier s output is proportional to the amount of charge delivered per unit of time Fluctuations in IF frequency FM produce fluctuations in the voltage at the output of the discriminator The demodulated FM passes through the FM Output Amplifier and on to the audio circuits for further filtering and audio processing The Squelch Switch grounds the output of the discriminator whenever the IF level detected by the Squelch Detector is insufficient This squelch action attenuates the large noisy output that results when 8D 26 Service Sheet BD3 Model 8901B Service discriminating only noise and speeds recovery of the audio circuits from tuning induced transients The Co
512. rystal oscillators nominally 9 26 and 11 26 MHz mixed together to produce a 2 MHz output The two oscillators can each be tuned approximately 6 25 kHz in opposition for a total tuning range of 2 MHz 6 25 kHz This tuning scheme allows a broad tuning range while retaining the high stability of the individual oscillators The 2 MHz Low Pass Filter and 2 MHz Bandpass Filter A21 reject unwanted mixing products which appear as spurious AM and residual tones Careful selection of the crystal frequencies minimizes the output of spurious mixing products Sampler Assembly A23 The Sampler is the phase detector of the phase lock loop The tunable 2 MHz signal from the LF VCXO A21 drives the Sampling Bridge through the 2 MHz Limiter and Impulse Generator The output of the impulse generator is a train of extremely short duration pulses with the repetition rate of the 2 MHz signal The two pulses momentarily turn on the diodes that is close the switch of the Sampling Bridge and pass the signal from HF VCO A24 The output from the Sampling Bridge is thus the HF VCO sampled at a 2 MHz rate If the two signals are harmonically coherent the output is a dc voltage with a level determined by the phase and amplitude of the HF VCO The action of the phase lock loop tunes the HF VCO to drive the voltage to zero If the relationship is not strictly harmonic that is phase lock is broken the output is a beat note with a frequency equal to the differenc
513. s are suspended When the special function mode is left to resume normal measurements all effects of these special functions on hardware are lost with some exceptions such as AM or FM calibration and enabling of service errors Refer to paragraph 8 7 for details As an example a Direct Control Special Function can be used to activate a particular Input Attenuator to check its operation But once normal measurements are resumed the attenuator setting will revert back to what it was before the Direct Control Special Function was invoked 8D 10 Service Sheet BD1 Model 8901B KEYBOARD OR INTERRUPT POWER UP CHANGE INITIALIZE SOETWARE STATE SOFTWARE STATE NONMEASUREMENT DISPLAY MEASUREMENT DISPLAY SET UP HAROWARE FREQUENCY TUNING SIGNAL LEVELING i YES AUDIO RANGING MEASURE Tet Figure 8D 5 Modulation Analyzer Software Supervisor Flow Chart Service Sheet BD1 Service 8D 11 gi a l ee SS See ee Service Model 8901B TROUBLESHOOTING General The troubleshooting checks that follow are a starting place for locating an instrument fault They are easy to perform and give much key information in a short amount of time In most instances they can differentiate between an instrument hardware failure and a Controller or software problem The checks should be done in order 71 Line Check Procedure Remove instrument top cover three screws and switch POWER to ON
514. s faulty see Service Sheet 24 and check the SMI and the address line 7 Check the RAM WRT and CPU READ test points on the extender board with an oscilloscope RAM WRT should be a TTL high CPU READ should be a TTL square wave with a period of 2 us If faulty see Service Sheet 24 and check the SMI and the load on the first two lines 8 Switch POWER to STBY Remove A13U1 CPU External Register or RAM from its socket Service Sheet BD5 Model 8901B Table 80 15 Address Line Signatures Step 6 5V GND ADDRESS 15 ADDRESS 14 ADDRESS 13 ADDRESS 12 ADDRESS 11 ADDRESS 10 ADDRESS 9 Test Point Test Point ADDRESS 8 ADDRESS 7 ADDRESS 6 ADDRESS 5 ADDRESS 4 ADDRESS 3 ADDRESS 2 ADDRESS 1 ADDRESS 0 Test point on Controller Assembly A13TP10 5V Service 9 Switch POWER to ON Check the CONTROL BUS test points on the extender board with the signature analyzer probe as listed in Tables 8 16a through 8 16h If signatures are faulty see Service Sheet 24 and check the Decoders and ROMs The signatures below are valid only for the firmware with the specified ROM part numbers Consult Section 7 Instrument Changes or the Man ual Changes Packet for signatures corresponding to other firmware part numbers Table 8D 16a Data Line Signatures 73 Step 9 2314A to 23334A Valid ROM part numbers ROM part numbers Replace with latest parts ROM Number
515. se product damage This product is designed for use in Installation Category IT and Pollution Degree 2 per IEC 1010 and IEC 664 respectively FOR INDOOR USE ONLY This product has autoranging line voltage input be sure the supply voltage is within the specified range Regulatory Information Updated March 1999 To prevent electrical shock disconnect instrument from mains line before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally Ventilation Requirements When installing the product in a cabinet the convection into and out of the product must not be restricted The ambient temperature outside the cabinet must be less than the maximum operating temperature of the product by 4 C for every 100 watts dissipated in the cabinet If the total power dissipated in the cabinet is greater than 800 watts then forced convection must be used Product Markings CE the CE mark is a registered trademark of the European Community CE mark accompanied by a year indicated the year the design was proven CSA the CSA mark is a registered trademark of the Canadian Standards Association 4 Chapter 1 Model 8901B Service SAFETY CONSIDERATIONS GENERAL This product and related documentation must be re viewed for familiarization with safety markings and instructions before operation This product is a Safety Class I instrument provided
516. ssing of a key is sensed by the Keystroke Detector The detector interrupts the Microprocessor which then enters an interrupt service routine The routine causes the key rows and columns to be scanned sequentially via the Key Row and Column Scanner to ascertain which key is down This scan is accomplished by driving the rows in sequence with the select decoder and reading the state of the columns with the data readback lines If no key closure is found due perhaps to key bounce the scan repeats If no key closure is found after 50 ms the Microprocessor leaves the key service routine and returns to the measurement being made prior to the key interrupt starting at the beginning of the measurement cycle Lighting of the key and annunciator lights display digits and decimal points is by a straight forward decoding of the Instrument Bus Note that the lights in the keys do not light as a direct result of a key closure Instead the Microprocessor having recognized a key closure sends the command out on the Instrument Bus to light the key light 80 50 Service Sheet BD5 Model 8901B Service Remote Interface Assembly A14 The Remote Interface Assembly interfaces the Controller with the Hewlett Packard Interface Bus HP IB It performs necessary handshake operations interprets the HP IB control lines and is both an input and output peripheral to the Controller The Remote Interface Assembly consists of Handshake Logic HP IB Input Output Tra
517. sured Signal TTL High TTL High TTL Low 4 Key in the Special Functions listed in Table 80 19 For each entry the indicated ENABLE test point on the extender board should show low going TTL pulses with a period of approximately 60 ms All other ENABLE test points should be TTL highs If faulty see Service Sheet 24 and check the Enable Decoder and CPU Table 8D 19 Instrument Bus Data Step 4 Special Function Test Point ENABLE 0 ENABLE 1 ENABLE 3 ENABLE 4 ENABLE 5 ENABLE 6 ENABLE 7 8D 58 Service Sheet BD5 rov 23MA R87 Service Keyboard Key Check 1 Key in 60 0 SPCL As the Special Function code is entered 60 0 should appear in the display This indicates that the Controller responds to keyboard interrupts If faulty see 77 and While the SPCL key is down 35 should appear in the display After releasing the SPCL key 99 should appear in the display If another number appears continue on 2 Jumper A13TP3 INT to 1 15 GND This defeats the keyboard interrupt 3 Press the keys one at a time and compare the display with the key codes shown in Figure 8D 8 If a code other than 99 appears in the display with no key pressed the key corresponding to the displayed key code is probably stuck down see Service Sheet 25 If a wrong code appears for one or more keys check the corresponding key and decoder see Service Sheet 25 NO KEY PRESSED 99 60 61 62 63 T2088 5
518. t selected Component heter to Section 5j Re placeable Parts Mfr Part Number 08901 601 86 30D506G025CC2 30D506G025CC2 0160 4636 0160 2660 0160 4635 0160 4795 0160 4807 304324 8 35PF N650 0160 4833 1500225 9020 2 0160 4832 0160 4835 0160 4812 0160 4832 0160 4822 0160 4822 0160 4835 0160 4833 0160 4833 0160 4812 1500225 9020 2 150D156X9020B2 0160 4832 0160 4807 0160 4835 0160 3501 1500225 1500225 1500226 0160 5528 1500156 9020 2 9020A2 9015B2 9020B2 1500225 9020 2 0160 3539 1500156 0160 4807 0160 4334 9020 2 S Prata part change 6 33 Replaceable Parts Reference HP Part Qty Designation Number D AGC44 0180 1746 5 6 45 0180 1746 5 6 46 0160 4835 7 6 47 0180 2929 8 6 48 6 49 A6C50 0160 4822 2 2314 2334 A6C51 0160 0340 1 1 2340A AND ABOVE A6C51 0160 4678 6 A6C52 0180 2613 7 1 A6C53 0180 1746 5 6 54 0160 4833 5 6 55 0160 4525 4 1 6 56 0160 4835 7 6 57 0160 4823 5 A6C58 0160 4825 5 2 A6C59 0160 4825 5 A6C60 0160 4810 8 1 6 61 0180 0197 8 6 62 0180 1746 5 6 6 0160 4812 9 6 64 0160 4801 7 6 65 0180 0376 5 2 6 66 0160 4822 2 6 6 0160 5714 3 1 6 68 0160 4789 0 1 6 69 0180 1746 5 6 7 0160 4509 2 1 A6CR1 CR4 A6CR5 1901 1098 1 A amp 6CRE 1901 1098 1 1901 1098 1 A6CRAB 1901 1098 1 A6CRS 1901 0539 3 3 AGCR10 1901 05
519. t reaches the Mode Control reference the comparator output switches to initiate a ramp in the opposite direction Special Function 12 controls the FM Calibrator and permits its use with another Modulation Analyzer or modulation analyzer AM Calibrator Assembly A50 The RF input to the AM Calibrator is the unmodulated 10 1 MHz from the FM Calibrator The signal passes through a Limiter to the inputs of two similar Amplifiers A and B and through to two similar Modulators A and B Current Source B switches Modulator B on and off while Current Source A latches Modulator A on The outputs from the two Modulators are summed in the Summing Amplifier and the summed signal appears after attenuation at the CALIBRATION AM FM OUTPUT connector If both signal paths are identical the output from the calibrator is periodically toggling between a specific RF level and twice that level This produces 33 33 AM Rather than relying of the two signal paths being identical the AM is computed by careful static measurement of the signal levels from the Modulators during a calibration sequence First Modulator A is switched off and the voltage from the Amplifier Detector is measured with Modulator B on via the x1 DC Amplifier Vg This voltage is also measured via the x10 DC Amplifier Viog Then Modulator B is switched off Modulator A switched on and the level is measured via the x10 DC Amplifier AM is then calculated by the formula 100 4
520. table filters see Figure 8B 2 The audio input line is the same as in the previous example The Audio Overvoltage Detector senses the peak signal level on the line and U9 compares it against a reference If the detected level rises above the reference the output of U9 goes low and resets flip flop U19D Other flip flops not shown are also reset and open the audio path ahead of the detector without intervention of the Controller U21D and U21C when enabled invert the output of U19D twice The output of U21C is across the least significant bit of the readback data line of the Instrument Bus In the normal measurement cycle the Controller reads the status of the Audio Overvoltage Detector by enabling U21D and reading the output of U21C and displays an error if U9 has tripped Special Functions 8B 3 Service 8901 P O AUDIO DE EMPHASIS OUTPUT ASSEMBLY From Audio Filters 4 Pass Filters AUDIO DETECTOR INSTRUMENT BUS PULLUP RESISTOR 5 LEAST SIGNIFI CANT DATA BIT TO CONTROLLER L ENABLE Figure 8 2 Example Showing Audio Overvoltage Detector Readback At this point in the discussion a more detailed description of the Instrument Bus is needed Data d is read out from the I O port of the Controller to the Instrument Bus through buffers TTL inverters However data is read back to the I O port directly bypassing the buffers An I O port outputs a low by acti
521. tch POWER to STBY Extend the A13 Controller Assembly with the Digital Test Extender Board Switch POWER to ON 2 Check A13TP12 4 12V with dc voltmeter The voltage should be between 11 4 and 12 6 Vdc If faulty see Service Sheet 24 and check the 12V Regulator 3 Short A13TP9 RESET to A13TP10 5V This resets the Controller and forces a short write instruction cycle Connect a high impedance dc coupled oscilloscope to A13TP4 WRT or the WRT test point on the extender board The waveform should be TTL pulses with a period of 2 us If faulty see Service Sheet 24 and check the clock and lines and the Power On Reset circuit 4 Set the ROMC switches on extender board to GND This forces the SMI to step through its addresses On the extender board connect the signature analyzer clipleads as follows Clock c esos WRT ADDRESS 15 ADDRESS 15 GND 5 Set the signature analyzer s start stop and clock to trigger as follows eee NN Falling Edge Falling Edge Clock oak Ski Rising Edge 6 Check the test points on the extender board with the signature analyzer probe as listed in Table 8D 15 If all signatures are bad except GND see Service Sheet 24 and replace the SMI If only one ADDRESS line i
522. ted to HP IB if the Special Function is entered via HP IB and only the SPCL key is lighted If any key other than a number key S Shift key or the LCL key is pressed the instrument hardware will revert back to the measurement mode it was in before the Direct Control Special Function was entered Thus in this example unless the 50 Hz High Pass Filter had been previously selected with the front panel key it would be removed from the audio path when any other key is pressed However note that there are some Service Special Functions that will maintain the requested configurations even if another key is pressed Table 8B 2 indicates that 0 14A will also select the 50 Hz High Pass Filter Any Direct Control Special Function of the form 0 14d also controls the pre display filter on off switches U14A and U14B For pre display on 0 142 U14A is closed For pre display off 0 14A U14B is closed As it turns out 0 14d codes other than those shown in the table will also affect the high pass filters For example 0 147 will close U12A U12B and U12C simultaneously with U14A also closed This fact is ascertained from the service sheet schematic Example 2 A second example from the assembly illustrates data readback when using the Direct Control Special Function One of the means of detecting an overrange of the audio circuits is by the Audio Overvoltage Detector The detector is on the audio input line before any active and hence distor
523. test Po Model 8901B Replaceable Parts Table 6 3 Replaceable Parts Reference HP Qty Description Mfr Mfr Part Number Designation Number D Code 19 08902 60126 0 1 LO DIVIDER ASSEMBLY 28480 08902 60126 19 1 0160 0570 9 CAPACITOR FXD 220PF 20 100VDC 20932 5024EM100RD221M 19 2 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C3 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 4 0160 2878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 5 0160 3878 6 CAPACITOR FXD 1000 20 100VDC CER 28480 0160 3878 A19C6 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C7 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C8 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 9 0160 3878 2 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 A19C10 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 1500225 9020 2 19 11 0160 4822 2 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 4822 19 12 0180 0197 8 CAPACITOR FXD 2 2UF 10 20VDC 56289 150D225X9020A2 A19C13 0160 4822 2 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 4822 19 14 0162 4822 4 CAPACITOR FXD O1UF 20 100VDC CER 28480 0160 4832 19 15 0160 3878 6 CAPACITOR FXD 1000PF 20 100VDC CER 28480 0160 3878 19 16 0160 4830 2 2200PF 20 100VDC 28480
524. that is when the signal frequency minus LO frequency equals the IF In this case the phase of the FM and M is inverted The Input Mixer has two modes of operation 1 For input signals in the range 2 5 to 1300 MHz the Input Mixer down converts the input signal to the 1 5 MHz or the 455 kHz IF 2 For signals below 2 5 MHz the Input Mixer passes the signal directly into the IF Down conversion can be extended below 2 5 MHz using the 455 kHz IF and manual tuning The normal operating signal level is less than 16 dBm for AM and 6 dBm for FM and The LO signal for the Input Mixer comes from the LO Dividers through the LO Amplifier The next two paragraphs apply to 2314A to 2636A The IF frequency response is determined by the IF Filters and the IF amplifier in the A18 IF Amplifier Assembly The 455 kHz Wide Bandpass Filter in the 17 Input Mixer Assembly determines the response of the 455 kHz IF The 455 kHz Wide Bandpass Filter is switched in automatically for input signals in the range of 2 5 to 10 MHz When the 455 kHz IF is chosen the 455 KHZ IF annunciator lights Automatic IF filter selection provides the optimum IF frequency and IF filter selection for each measurement mode The frequency response of the IF filter is determined by the RF input blocking capacitors not shown the 4 MHz Low Pass Filter and principally the 2 6 MHz Low Pass Filter Service Sheet BD2 8D 17 O SS Service Model 8901B in the
525. the Charge Count Discriminator If not faulty see Service Sheet 20 and check the Track Loop Amplifier 8D 22 Service Sheet BD2 Model 8901B Service Input Mixer and IF Check NOTE This check assumes that 5 Local Oscillator Tuning Check and Local Oscillator Level Check give positive results 1 Set signal generator to approximately 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT 2 Connect an ac coupled oscilloscope to rear panel JF OUTPUT Switch the input impedance of the oscilloscope to 500 or terminate the input in 500 using a tee 3 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 1 8 SPCL to set the attenuation range to 20 dB Key in 20 MHz on the Modulation Analyzer to manual Tune The waveform should be a sinewave 80 to 126 mVpp with a period of between 645 and 690 ns that is nominally 1 5 MHz If faulty see Service Sheets 5 and 9 and check the Input Mixer IF Filters IF Amplifiers and FM IF Buffer 4 Key in 3 1 SPCL to set the IF to 455 kHz The waveform should be a sine wave 67 to 106 mVpp with a period of 2 19 to 2 21 ys that is nominally 455 kHz If faulty see Service Sheet 5 and check the 455 kHz Wide Bandpass Filter 2314A to 2636 and in addition the First and Second IF Amplifiers 2642A and Above Power Meter Check 1 Perform Performance Test 8 Power Meter in Section 4 If the Zero Set test f
526. the HP 11793A whose output is fed to the input of the Modulation Analyzer Special Function 27 controls the Frequency Offset Mode Table 8D 4 shows the status of the FREQ OFFSET T TL OUT voltage Table 8D 4 Status of FREQ OFFSET TTL OUT Connector State of Frequency Nominal Voltage Vdc at Offset Mode Frequency GHz FREQ OFFSET TTL OUT Not Offset Any 0 Offset 0 Offset 0 frequency 18 Offset 18 frequency 40 7 Service Sheet BD2 a OO 52 2 2 Model 8901 Service Power Reference Oscillator Assembly A32 Since the Power Meter uses an open loop measurement technique as opposed to a dc substitution technique an independent power reference is required to calibrate that is determine the sensitivity of the external Power Sensor The Power Reference Oscillator produces a 50 MHz RF signal which is set during calibration of the reference to deliver 1 mW to 500 load The output of the oscillator is accurately controlled by the Automatic Leveling Control ALC Loop A Level Detector at the output of the oscillator senses the peak RF level The level is compared to a stable dc reference by the Level Error Amplifier The error is amplified and fed back to the level control circuitry in the oscillator to correct the error RF Input Assembly A15 The RF Input Assembly is the instrument s front end It receives the RF input signal and attenuates it to an optimum level for the Input Mixer The RF lev
527. the RF signal The IF is centered at 1 5 MHz for input signals 10 to 1300 MHz However an IF of 455 kHz can be manually selected For signals between 2 5 MHz and 10 MHz the IF is 455 kHz Below 2 5 MHz the signal is passed directly into the IF without being down converted unless the 455 kHz IF has been manually selected The IF Amplifier is a low noise 33 dB amplifier When the 1 5 MHz IF is selected the frequency response is determined by the 2 5 MHz Low Pass Filter When the 455 kHz IF is selected the 455 kHz Bandpass IF Filter preceeding the First IF Amplifier determines the IF response The IF signal is sent to the the 2 5 MHz Low Pass Filter where it is buffered and sent to both the rear panel IF OUTPUT connector and to the FM Demodulator circuitry The IF Peak Detectors sense the presence of the IF signal and thus the input RF signal during an automatic signal search via the IF Present and Stop Sweep lines The Voltmeter measures detected IF level via the IF Peak Level line to help determine the setting of input attenuation Selective Power Options Option Series 030 The Selective Power Options Option Series 030 add a set of selectable bandpass filters and a programmable IF amplifier to enable the instrument to make accurate adjacent channel power and single sideband noise measurements on transmitters and signal generators For these measurements the instrument is first tuned to the incoming signal using the 455 kHz IF The
528. the protection has been impaired the instrument must be made inoperative and be secured against any unintended operation If this instrument is to be energized via an auto transformer for voltage reduction make sure the common terminal is connected to the earth terminal of the power source If this product is not used as specified the protection provided by the equipment could be impaired This product must be used in a normal condition in which all means for protection are intact only No operator serviceable parts in this product Refer servicing to qualified personnel To prevent electrical shock do not remove covers Servicing instructions are for use by qualified personnel only To avoid electrical shock do not perform any servicing unless you are qualified to do so The opening of covers or removal of parts is likely to expose dangerous voltages Disconnect the product from all voltage sources while it is being opened The power cord is connected to internal capacitors that my remain live for 5 seconds after disconnecting the plug from its power supply For Continued protection against fire hazard replace the line fuse s only with 250 V fuse s or the same current rating and type for example normal blow or time delay Do not use repaired fuses or short circuited fuseholders Always use the three prong ac power cord supplied with this product Failure to ensure adequate earth grounding by not using this cord may cau
529. tion 6 or Section 8 The part in the figure will be labeled with its reference designator Look up that reference designator in the Replaceable Parts table If the part is a fastener such as a screw nut or washer look to the figure for the part to which it fastens Then look up the fastened part in the parts list Just below it are the part numbers and a description of the desired hardware Other Service Documents Service Notes Manual Updates and other service literature are available through Hewlett Packard For further information about Manual Updates refer to Volume 1 paragraph 1 6 Recommended Test Equipment and Accessories Test equipment and test accessories required to maintain the Modulation Analyzer are listed in Tables 1 2 and 1 3 Equipment other than that listed may be used if it meets the listed critical specifications 8 5 GENERAL TROUBLESHOOTING Instrument problems usually fall into three general categories operator errors operation out of specification and catastrophic failures The troubleshooting strategy is different for each category Operator Errors Apparent failures sometimes can result from using the instrument outside of its range Usually the instrument can sense the condition and will display an error message At other times it cannot for example when it attempts to measure signals with frequencies higher than 1300 MHz Consult the Specifications table Table 1 1 and the Detailed Operating Instructions
530. to ground 49 31 SPCL gives a display of the level from the RF Peak Detector with respect to the level from the RF Peak Detector ground The rear panel RECORDER output is connected to the output of the Voltmeter s selector switch see Service Sheet 15 During normal operation the selector is constantly being switched between the various inputs Each voltage measurement also includes a separate measurement of ground The displayed result is derived from the difference between the selected voltage and ground readings The switching at the RECORDER output can be halted by keying in Special Function 49 XY with X equal to 0 or 8 and equal to the desired input The dc level at the RECORDER output is constant and equal to the selected input the displayed measurement result is equal to the result using Special Function 49 Y This feature is useful for troubleshooting the Voltmeter and for improving the accuracy of the RF Power measurement see Recorder Output in Section 3 50 N Display Internal Voltages The Voltmeter measures and displays the internal voltage in volts selected by N See also the previous note N 0 Ground See Service Sheet 15 N 1 15V Supply The display should read between 2 8500 and 3 1500 See Service Sheet 15 N 2 5V Supply The display should read between 2 8500 and 3 1500 See Service Sheet 15 N 3 5V Supply The display should read between 2 8500 and 3 1500 See Service Sheet 15 N 4 15V Supply The display sho
531. trument Table 6 4 contains the names and addresses that correspond to the manufacturer s code numbers listed in Table 6 3 Also included in this section are photographs and drawings to aid in identifying and ordering chassis mounted parts and mechanical parts 6 2 REFERENCE DESIGNATIONS AND ABBREVIATIONS USED IN THIS MANUAL Table 6 1 lists the reference designation letters for electrical parts in the instrument The letter designations found in Table 6 1 are coupled with numeric designations to provide a unique reference designation for each part in the instrument For example 17 1 is the reference designation of a particular resistor 1 on assembly 17 Table 6 2 lists abbreviations used in the parts list and on schematics 6 3 REPLACEABLE PARTS LIST Table 6 3 is a list of replaceable parts and is organized as follows a Electrical assemblies and their components with reference designations in alphanumeric order b Chassis Mounted parts with reference designations in alphanumeric order c Mechanical parts with reference designations in alphanumeric order For your convenience the Replaceable Parts List is paginated so that each assembly listing can be removed from Section 6 and collated into Section 8 with its corresponding service information Ordering Parts Instrument Serial Numbers Attached to the rear of the instrument is a serial number plate The first four digits and the letter are the instrument serial number prefix
532. ts called software state and hardware state The software state is stored in 38 bytes of RAM and totally describes the state of the instrument On power up the initialization procedure loads the software state from ROM Keyboard and HP IB entry routines modify only the software state and do not affect the hardware immediately The setup block in the supervisor is where the hardware state is made to conform with the software state Setup is not the only place where hardware is affected the frequency tuning leveling audio ranging and measurement blocks manipulate the hardware as well In a normal stable measurement cycle the program takes the measurement display branch at the top of the supervisor and so avoids the time overhead associated with the setup block However if the program loops back before taking a measurement or if an error condition exists the non measurement display branch will be traversed thus lighting an appropriate display and going through the setup block The Keyboard and HP IB interrupt the flow around the loop forcing the Microprocessor to execute a short program and then return to the loop as shown in the diagram Since the supervisor can be interrupted at any point but always returns to a single location Keyboard and HP IB interrupts must abort the current measurement and start a new measurement cycle The Keyboard and HP IB can be thought of as a medium through which the user requests a certain instrument setup It is
533. ttes Cena ouent t6 ten Mfr Code 28480 28480 28450 00000 28480 00000 28480 00000 28480 on Replaceable Parts Mfr Part Number 08901 60242 1251 3283 1251 5240 ORDER BY DESCRIPTION 2190 0034 ORDER BY DESCRIPTION 2190 0019 ORDER BY DESCRIPTION 2260 0002 Porast a peace hanse 6 127 Model 8901B Reference Designation A32 2 2 1 2 2 A32C3 2 4 A32C5 2 6 A32C7 A32C8 2 9 A32C10 A32C11 A32C12 A32C13 A32C 14 2 1 A32CR2 A32CR3 A32J1 A32L1 A32L2 A32L3 A32MP1 201 A3202 A32R1 A32R2 A32R3 3284 A32R5 HP Part Number 08901 60227 08301 00194 0169 3879 0160 3036 2190 0009 2580 0002 0160 3036 2190 0009 2580 0002 0160 3879 0160 3879 0160 2027 0160 3070 0180 0100 0160 2255 4330 0145 0160 3878 0160 0179 0160 3879 0160 4006 0160 4007 1901 0518 1901 0518 0122 0299 1250 1220 2190 0124 2950 0078 08901 80043 9140 0144 08901 80044 08901 20232 1854 0247 1200 0173 1854 0071 0757 0442 0757 1094 0811 3234 2100 3154 0817 3381 Cn aA bh A Ow o5 a Ur N tkete Section 7 fer undate vitet rev 16JUL90 Qty BET Table 6 3 Replaceable Parts Description POWER REFERENCE OSCILLATOR ASSEMBLY P C SHIELD CAPACITOR FXD O1UF 20 100VDC CER CAPACITOR FDTHRU 5000PF 80 20 200V WASHER LK IN
534. udio range detector to be displayed The display should read 0 4 to 0 6 If faulty see Service Sheet 13 and check the Absolute Peak Detector Key in 0 15 SPCL The display now shows the audio overvoltage status The display should read 000000 0000 If faulty see Service Sheet 13 and check the Audio Overvoltage Detector Increase the synthesizer level to 10 dBm The display should read 000001 0000 indicating that an audio overload has been detected If faulty see Service Sheet 13 and check the Audio Overvoltage Detector NOTE To repeat steps 13 and 14 it is necessary to press CLEAR first to clear the audio overvoltage latch Service Sheet BD4 Model 8901B Service 73 Audio Average and Peak Detector Check NOTE This check assumes that v2 Audio Filters and De emphasis Check gives positive results 1 Set the audio synthesizer to 1 kHz at 17 dBm The synthesizer output impedance should be 500 Connect its output to A2J2 FM IN 2 Connect a high impedance ac coupled oscilloscope with 10 1 divider probe to DE EM OUT 3 Set the signal generator to approximately 20 MHz CW at 0 dBm Connect its RF output to the Modulation Analyzer s INPUT 4 Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Press FM Key in 2 2 SPCL to set the audio gain to an intermediate range Fine adjust the synthesizer level for an ac waveform of 2 Vpp 5 Connect a dc coupled oscill
535. udio signal should disappear into the noise If faulty see Service Sheet 16 and check the Notch Filter Connect the oscilloscope again to A52TP2 Key in 0 2 S 0 7 SPCL to set the Notch Filter to 1 kHz keep the gain of Amplifier 2 at 20 dB set the gain of Amplifier 1 to 0 dB and set the Notch Select Switch to the notch filter position The 400 Hz audio signal should have an amplitude between 2 7 and 3 3 Vpp If faulty see Service Sheet 17 and check the Notch Select Switch 77 Audio Counter Check 8D 44 1 2 3 Set the audio synthesizer to 1 kHz at 1 Vrms into a high impedance Connect its output to the MODULATION OUTPUT AUDIO INPUT Connect an ac coupled high impedance oscilloscope to A52TP4 BUF Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Press S Shift AUDIO FREQ Press AUDIO INPUT The 1 kHz audio signal should be displayed on the oscilloscope with an amplitude between 2 6 and 3 0 Vpp If faulty perform Service Sheet BD4 Model 8901B Service 4 Set the synthesizer to 100 mVrms into a high impedance and set the frequency as shown in Table 8D 14 For each setting the displayed frequency should be within the limits indicated If faulty see Service Sheet 16 and begin by checking the Counter Buffer and Schmitt Trigger Table 8D 14 Displayed Frequency 77 Step 4 Synthesizer Displayed Count kHz Frequency Hz 1 000 0 99998 1 00002 20
536. uency in step 11 should be between 3 and 7 kHz If faulty see Service Sheet 7 and check the Second Channel 2 Filter Key in 0 2F0 SPCL to read back the Option Series 030 Installed Indicator The Modulation Analyzer should display 000001 0000 If faulty see Service Sheet 7 and check the Option Series 030 Installed Indicator IF Amplifier Detector Check Option Series 030 2642A and Above 1 Set the signal generator or audio synthesizer to between 454 and 456 kHz CW at 70 dBm 70 7 uVrms into 500 Connect its RF output to A71J2 IF IN on the Measuring Receiver Connect a high impedance ac coupled oscilloscope to A71J1 TEST JACK Press the blue key then press INSTR PRESET the AUTOMATIC OPERATION key to preset the instrument Key in 0 397 SPCL and 0 3E7 SPCL to switch in maximum IF gain and select the Second Channel 1 Filter Fine tune the signal source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between 1 and 2 Vpp If faulty see Service Sheet 34 and check the circuits of channel 1 Key in 49 C SPCL to read the IF with the IF RMS Detector Calculate reading of step 3 x 1 63 The Measuring Receiver s display should read within 10 of the calculated value If faulty see Service Sheet 34 and check the IF RMS Detector Set the signal source level for a Measuring Receiver
537. uitry in the Modulation Analyzer is designed to work with a wide variety of power sensors with varying frequency and sensitivity ranges The power sensors contain a Sensor Identifier Resistor which is unique for each type The particular sensor is identified by driving the resistor with a known current and measuring the voltage across it If no Power Sensor is connected the instrument makes RF level measurements using the RF Peak Detector in the 15 RF Input Assembly Refer to RF Level in the Detailed Operating Instructions of the Operation and Calibration Manual Power Meter Assembly A53 The Power Meter ssembly contains circuitry for amplifying and detecting the small ac signal from the external Power Sensor and for controlling the external input switch and Power Reference Oscillator AC Amplifiers 1 and 2 and Attenuators 1 and 2 accurately amplify the chopped dc voltage from the external RF Power Sensing Element The AC Amplifier in the Power Sensor forms the first stage of Amplifier 1 The amplifiers have a bandpass response tuned to 220 Hz to minimize noise Table 8D 3 lists the attenuation for the power meter ranges The ranges are not listed in terms of absolute power because the sensitivity of the power sensors varies with type Also the attenuation in dB is the voltage attenuation a step of 20 dB of attenuation corresponds to a 10 dB step in power level Special Function 10 controls selection of the attenuators Service Sheet BD2 8
538. uld read between 2 8500 and 3 1500 See Service Sheet 15 N 5 40V Supply The display should read between 2 8500 and 3 1500 See Service Sheets 15 and 20 N 6 IF Amplifier Detector option series 030 See Service Sheet 34 52 N Read Only Memory Verification The Controller displays the checksum of the read only memory ROM specified by N When specifying a ROM use N 1 through 3 The display is in the form lt actual checksum gt lt expected checksum gt An initial zero or zeros will be blanked Thus for example 24 024 would be a valid checksum 24 124 would be invalid The display times out after approximately 5s See Service Sheet 24 54 N Local Oscillator Test The Controller sequences the local oscillator LO through groups of tests specified by N and returns a fault code corresponding to the tests that failed For N 1 to N 5 four tests are performed for each group If all tests in the group pass 0 will be displayed If any tests fail the test numbers appear on the display in the positions indicated The digit positions are numbered under the display window leading zeros in the display are blanked For example in the group defined by N 1 a simultaneous time base Test 2 and HF VCO or Divider Test 4 failure will result in the display 20004 three leading zeros blanked The tests are continuously sequenced and the display will be updated as the fault is corrected The tests are most easily visualized by referring to
539. ument Bus The set flip flop U19D puts a high on the input of U21D and an inactive high on the least significant data line This is read by the Controller r 0 and thus is the same as the bit issued The other three data readback lines are unaffected by the readback command and remain 001 Therefore the d read back is 0010 If U19D is reset U21D puts a low on the least significant data bit r 1 and the data read back is 0011 The display is therefore 000011 0010 Note that rrrr is different from wwww If d is keyed as a hexadecimal F the display is 001111 1111 regardless of the state of U21D This is because all output devices on the data I O port of the Controller are on logical 1 One final note after a Direct Control Special Function is entered it is periodically issued to the Instrument Bus If a fault causes rrrr to indicate a malfunction the display will begin to read correctly as soon as the fault is removed 8B 4 Special Functions rev 22SEP87 Model 8901B Service Service Special Functions Prefix 40 99 The Service Special Functions are used to perform a variety of tasks related to service The functions are cataloged below A suffix N indicates that a parameter other than 0 may be required to complete the Special Function code Information within pointed brackets appears on the Modulation Analyzer display See Table 8B 1 for entry of hexadecimal suffixes A B C D E and F 40 0 Controller Reset Initializes
540. used to assist in troubleshooting an instrument fault The functions available are quite diverse and include special internal measurements software control and special service tests and configurations Safeguards are generally relinquished Direct Control Special Functions Prefix 0 Communication between the instrument s Controller and its hardware is via the Instrument Bus During normal instrument operation the Instrument Bus carries measurement results status information and commands which control hardware The Direct Control Special Functions halt the bus activity and send out commands as determined by the code suffix One command is sent for each Special Function entry summary of the Direct Control Special Functions and codes is contained in Service Sheets A and B Direct Control Special Function Code Format The Direct Control Special Function code is in the form 0 esd where 0 is the prefix which may be omitted and esd represents a three digit hexadecimal number The significance of esd which stands for enable select and data is discussed in the Principles of Operation for Service Sheet BD5 Specific Direct Control Special Function codes are used in the troubleshooting section of the individual service sheets As the Direct Control code is entered the code will appear on the display Pressing the SPCL key initiates the Special Function The display will then be in the form 00rrrr wwww where each digit represents a binary
541. ut of the decoder This line clocks the data into the High Pass Filter Control latch Since the d1 H line is high the 50 Hz HPF L line goes low This selects the 50 Hz High Pass Filter There is a direct relationship between the codes output on the Instrument Bus and the Direct Control Special Functions discussed in paragraph 8 7 The enable select and data codes combined into a hexadecimal number esd create the Direct Control suffix In the example used in the previous paragraph the suffix is 142 corresponding to Direct Control code 0 142 Instrument control can be visualized as a series of Direct Control Special Functions issued under program control The example above decoded only three of the four select code bits and used the data bits directly or inverted them Notice that if the code esd 147 were issued the through path NO HPF 50 Hz High Pass Filter 300 Hz High Pass Filter and De emphasis Pre Display On switches would all be activated On some assemblies the data codes may be decoded and select codes above 7 may be used On other assemblies certain select codes are used to enable readback devices which read back status or measurement data onto the unbuffered data lines T his is discussed in more detail in connection with Direct Control Special Functions in Service Aids Keyboard and Display Assembly A1 The Keyboard and Display Assembly is both an input peripheral and an output peripheral to the Controller The pre
542. vely pulling the line to ground It outputs a high by allowing the output to be passively pulled up by an external pull up resistor When a Controller I O port inputs data from other circuits of the Modulation Analyzer these circuits must operate against the passive pull up resistor Readback devices that are read out to the data lines such as U12C are similarly configured U21C has an open collector T TL output When not outputting data its output device is off pulling it to a high impedance inactive state When it outp ts data a low is produced by switching the output device to ground A high is produced by switching the device off and allowing the output to be passively pulled up The readback lines are low true that is r 1 when the line is low When U12D is disabled enable is high its output is low Therefore U21C is high inactive and has no effect on the data line U12D is enabled by Direct Control Special Function 0 15d The value of d is arbitrary to enable U21D but the least significant bit must be 0 that is d must be even to switch off the output device of the I O data port To clarify this concept suppose that U19D has not been reset If Direct Control Special Function 0 152 is entered the display will show 000010 0010 0 15d also controls FM squelch Using 0 152 deactivates squelch The four digits following the decimal are 0010 because d 2 was received by the Controller from the keyboard and issued to the Instr
543. vice Model 8901B Local Oscillator Level Check 1 Set RF spectrum analyzer to measure a 0 dBm 0 to 1400 MHz signal Connect its input to the end of the cable connected to A17J3 LO IN 2 Key in 57 0 SPCL to cause the LO to sweep sequentially across bands DBLR through 3 The LO signal should sweep slowly from above 1300 to below 40 MHz The sweep will occur over five bands As the low end of a band is reached the sweep will stop jump up slightly in frequency then continue to sweep T hroughout the sweep the LO should maintain an amplitude of at least 0 dBm If it does not see Service Sheet 17 and check the dividers and gates associated with the bad band NOTE The sweep can be halted by pressing the SPCL key If the power level is marginal at a particular frequency halt the sweep at the frequency and make a more precise measurement with a power meter 3 Set the spectrum analyzer to view a 0 to 40 MHz signal 4 Key in 56 0 SPCL to cause the LO to sweep sequentially across bands 4 through 8 The LO signal should sweep slowly from above 40 to below 1 25 MHz in the manner described in step 2 above If the amplitude is not at least 0 dBm see Service Sheet 17 and check the dividers and gates associated with the bad band NOTE The low frequency bands can also be viewed on an oscilloscope The oscilloscope should have a 50 1 termination The signal should be a squarewave with an amplitude of 0 5 Vpp or greater 75 Track Mode Check
544. wer Reference Oscillator RF Input IF Amplifier and Local Oscillator The diagram also shows a typical Sensor Module connected to the Modulation Analyzer s INPUT and SENSOR connectors Sensor Module The Modulation Analyzer is designed to be used with an external module containing a Power Sensor RF switch and interconnecting cable The Sensor Module permits direct connection of either the Power Sensor or the RF INPUT to the RF source being measured The direct connection to the Power Sensor minimizes power measurement errors that result from insertion and mismatch losses in interconnecting cables and connectors The instrument s Controller switches the RF signal between the input to the Power Sensor and the front panel RF INPUT depending on the measurement being made This internal switching eliminates the need for manual reconnection and shortens measurement time The RF Power Sensing Element in the Power Sensor converts the absorbed RF power to a dc voltage proportional to the average power level The element may be a thermocouple or a diode Because the voltage from the RF Power Sensing Element is very small dc amplifiers which are subject to drift are unsuitable for the first stages of amplification Instead the voltage is converted to a 220 Hz ac signal by the Chopper and then ac coupled into the AC Amplifier The AC Amplifier is actually integrated in the first stage of Amplifier 1 in the A53 Power Meter Assembly The Power Meter circ
545. with a protective earth terminal BEFORE APPLYING POWER Verify that the product is set to match the available line voltage and the correct fuse is installed SAFETY EARTH GROUND An uninterruptible safety earth ground must be pro vided from the main power source to the product input wiring terminals power cord or supplied power cord set SAFETY SYMBOLS Instruction manual symbol the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual refer to Table of Contents 2 Indicates hazardous voltages a Indicates earth ground terminal The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal in jury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met The CAUTION sign denotes a haz ard It calls attention to an operating procedure practice or the like which if not correctly performed or adhered to could result in dam age to or destruction of part or all of the product Do not proceed beyond a CAUTION sign until the indi cated conditions are fully understood and met Any interruption of the protective ground ing conductor inside or outside the instru ment or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury Ground ing one co
546. z Option Combination kHz 032 and 035 033 and 035 035 and 037 032 and 033 033 and 037 032 and 037 Service Sheet BD3 8D 33 Service Model 8901B 7 Key in 0 303 SPCL to select channel 2 Set the signal source frequency to 455 kHz then fine tune the source to peak the signal on the oscilloscope Filter passband ripple can be as high as 2 dB Find the highest peak of the ripple The 455 kHz waveform on the oscilloscope should have an amplitude between 4 and 7 divisions peak to peak If faulty see Service Sheet 33 and check the circuits of channel 2 8 Set the oscilloscope gain for a display of 6 divisions peak to peak Increase the signal source frequency until the waveform drops to 3 divisions peak to peak Record the signal source s frequency 9 Decrease the signal source frequency until the waveform rises to 6 divisions peak to peak then drops to 3 divisions peak to peak Note the signal source s frequency The difference between this frequency and the frequency in step 8 should be as indicated in Table 80 12 If faulty see Service Sheet 33 and check the First Channel 2 Filter Table 80 12 Bandwidth of First Channel 2 Filter 7 Step 9 Frequency Difference Limits kHz Option Combination 032 and 037 033 and 037 035 and 037 032 and 033 032 and 035 033 and 035 10 Key in 23 1 to switch the LO to external The EXT LO indicator on A72 should go on and the LO input switch should make an audi

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