Home

HP Switch 8407A User's Manual

Contents

1. 150D225X9020A2 0YS 3C42A CML 3C42A CML 150D685X9035B2 DYS 3C42A CML 10 3 0180 0197 102 0160 3060 12 5 0160 3060 10 6 0180 0116 19 7 0160 3060 C FXD ELECT 2 2 UF 10 20VDCW C FXD CER 0 1 UF 20 25VDCN C FXD CER 0 1 UF 20 25VDCW C FXD ELECT 6 8 UF 10 35VDCW C FXD CER 0 1 UF 20 25VDCW C FXD ELECT 2 2 UF 10 20 150 5 C FXD 6 8 UF 10 35VDCW C FXD ELECT 2 2 UF 10 20VDCW C FXD CER 0 01 UF 480 208 100VDCW 1500225X9020A2 DYS ROMISF151J3C 150D685X903582 DYS 1500225 902042 0 5 81028 0180 0197 41009 0140 0196 10210 0180 0116 19 11 0180 0197 19 12 0160 2930 1500685 X903582 DYS 150D685X903582 DYS RDM15F221J3C RDM15E430J3C TA ELECT 6 8 10 35VDCW C FXD ELECT 5 8 UF 10 35VDCW C FXD MICA 220PF 5 300VDCW C FXD MICA 43 PF 5 CER 0 01 UF 80 20 l100VDCW A10C13 0180 0116 A10C14 0180 0116 A10C15 0160 0134 ALOCi6 0160 2200 19 17 0160 2930 192 10292 5 1500685 9035 2 0 5 301 000 CO0H0 1004 192 82392 5 CER 0 01 UF 80 20 100VDCW C FXO 0 001 UF 10 200VOCW C FXD ELECT 5 8 UF 10 35VDCW 10 PF 5 500VDCW C FXD 082 UF 10 200VDCW 10 18 0160 2930 ALOC19 0160 0153 Al0L20 0180 0116 A10C21 0160 2257 A10C22 0150 0167 1500685X9035B
2. Al4Ji 1250 1205 CONNECTDR PC RT ANGLE 1250 1205 1411 9100 1558 COIL CHOKE 1600 UH 55 2500 38 Al L2 9100 1658 COIL CHOKE 1600 UH 5 2500 38 1 amp 3 9100 2247 COIL FXD RF 0 10 UH 10 9100 2247 9100 1643 COIL CHOKE 300 UH 5Z 9100 1643 141 AL4L5 9100 1643 COIL CHOKE 300 UH 5 9100 1643 1416 9100 2247 COILS RF 0 10 UH 10 9100 2247 AL4L7 08407 80008 COIL ASSY ADJUSTABLE 08407 80008 1518 9100 2247 COILZFXD RF 0 10 UH 10 9100 2247 1 19 9100 2248 COIL CHOKE 0 12 UH 10 09 4416 2K 141 10 9100 2247 COILS FXD RF 0 10 UH 10 9100 2247 11 9140 0137 COIL FXO RF 1000 UH 5 9140 0137 Alsi 9100 1639 COIL CHOKE 150 UH 53 15 1315 16J 491 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 1 92 1854 0071 TSTR SI NPN SELECTED FROM 2 370484 1854 0071 1493 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 41494 1853 0020 TSTR SI PNP SELECTED FROM 2 3 2 1853 0020 1 25 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 414926 1853 0020 TSTR SI PNP SELECTED FROM 2 3702 1853 0020 Al427 1854 0071 TSTR SI NPN SELECTED FROM 2 837086 1854 0071 98 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 Al 39 1854 0071 TSTR SI NPNCSELECTED FROM 2N3704 1854 0071 14910 1854 0071 TSTR SI NPN SELECTED FR
3. 201 18 26 0007 1826 0007 IC LINEAR RECOMMENDED REPLACEMENT PHASE VERNIER ASSY REBUILT 08407 60052 REQUIRES EXCHANGE C FXD MICA 390 PF 5 2 1 A2A1 A2A1C1 08 407 60052 08407 60115 0140 0200 08407 60052 08407 60115 ROM15F391 J3C 2 1 2 0140 0200 C FXD MICA 390 5 RDM15F391 J3C A2A1C3 0150 3060 C FXD CER 0 1 UF 20 25VDCMW 3C42A CML 2 1 amp 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 0Y5 241 5 0160 2207 C FXD MICA 300 PF 5 0160 2207 2 1 6 0160 3060 C FXD 0 1 UF 20 25VDCW 3C42A CML A2A1Ji 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 043 4610 A241J2 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 043 4610 A2A1J3 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 043 4610 08407 00031 SHIELD CAN 08407 00031 2 101 1853 0050 TSTR SI PNP 1853 0050 2 192 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 2 103 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 2 1 1 0698 3450 R FXD MET FLM 42 2K OHM 12 1 8 0698 3450 A2ALK2 0698 3451 MET FLM 133K OHM 1 1 8 0698 3451 A2A1R3 0757 0401 R FXD MET FLM 100 OHM 1 1 8W 0757 0401 A2AlKA 0757 0280 R FXD MET FLM OHM 12 1 8W 0757 0280 A2A1R5 0757 0528 R FXO MET FLM 1 62K OH
4. ELECT 1 0 UF 10 35 C FXO MICA 220PF 5 300VDCW C FXD ELECT 1 0 10 35VDCW C FXD ELECT 1 0 UF 10 35VDCW C FXO CER 1 0 UF 20 50VDCW C FXD MICA 1100 PF 5 C FXD ELECT 2 2 UF 10 20VDCW C FXD CER 470 PF 52 200VDCW C FXD MICA 8200 PF 1 100VDCWwW C FXD ELECT 1 0 UF 10 35VDCW C FXD ELECT 1 0 UF 10 35VDCW C FXD CER 0 67 UF 80 20 25VDCW C FXDO ELECT 1 0 UF 10 35VDCW C FXD CER 0 47 UF 80 20 25VDCW C FXO ELECT 1 0 UF 10 35VDCW C FXD MICA 270 PF 5 C FXD CER 0 47 UF 80 20 25VDCW C FXD ELECT 1 0 UF 10 35VDCW C FXD CER 0 47 UF 80 20 25VDCW C FXD CER 5000 PF 80 20 200VDCW C FXD CER 5000 PF 80 20 200 0 C FXD CER 5000 PF 80 20 2 200VDCW DIODE SILICON DIODE SILICON 20 1 CONNECTOR PC RT ANGLE CONNECTOR PC RT ANGLE CONNECTOR PC RT ANGLE CONNECTOR PC RT ANGLE See introduction to this section for ordering information Replaceable Parts Mfr Part Number 0698 3440 0757 0280 0757 0279 08407 60053 08407 60116 15001 05X9035A2 DY S 3C42A CML 3C42A CML 8131 050 651 105 1500105 9035 2 0 5 3C42A CML 50 043 4610 50 043 4610 50 0434610 08407 00056 1853 0020 2N5179 2N5179 0757 0463 0757 0290 0698 3154 0757 0398 0698 3445 0698 3491 0698 0082 0698 0082 0698 3440 0757 0398 0698 3449 08407 60093 08407 60101 8131 050 651 4T4M 150D105X90 35A2 DYS 301 000 CO0G0 200J 150D105X9035A2 DYS 1500105X9035A2 DYS 3042A CML 3C42A CML Bi31 050 651
5. 11 21 0757 0290 R FXD FLM 6 19 OHM 1 1 8W 0757 0290 11 22 0757 0 28 R FXD MET FLM 1 62K OHM 1 1 BW 0757 0428 11 23 0757 0279 FLM 3 16K OHM 1 1 8W 0757 0279 ALIR24 0757 0463 R FXD MET FLM 82 5K OHM 1 1 8W 0757 0463 AllR24 FACTORY SELECTED PART 11825 0757 0462 R FXD MET FLM 75 0K OHM 1 1 8 0757 0462 AL1R26 0757 0278 R FXD MET FLM 1 78K OHM 1 1 8W 0757 0278 A11R27 0757 0279 R FXD MET FLM 3 16K OHM 17 1 8 0757 0279 1 1128 0757 0280 R FXD MET FLM DHM 1 1 8W 0757 0280 ALLR29 0757 0346 R FXD MET FLM 10 OHM 1 1 88 0757 0346 A11T1 9100 2870 TRANSFORMER 9100 2870 ALLT2 9100 2869 TRANSFORMER 9100 2869 A12 08407 60006 BANDPASS FILTER ASSY 08407 60006 SAME AS A9 USE PREFIX A12 Al2 08407 60105 REBUILT 08407 60006 REQUIRES EXCHANGE 08407 60105 A13 08407 60002 BOARD ASSY ALC AMPLIFIER 08407 60002 A13 08407 60102 REBUILT 08407 60002 REQUIRES EXCHANGE 08407 60102 A13C1 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5C1187S CML 13 2 0160 2265 C FXD 22 PF 5 500VDCN 301 22 A13C3 0180 0291 ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS A13C 0180 0291 C FXD ELECT 1 0 UF 10 35V0CW 15001 05X9035A2 DYS 13 5 0160 0174 CER 0 47 UF 80 20 25VDCW 5C1187S CML Al3C6 0160 2199 C FXD MICA 30 PF 5
6. 1371 Al4 9170 0016 08407 60009 BEAD MAGNETIC SHIELDING BOARD ASSY PHASE LOCKED OSCILLATOR RECOMMENDED REPLACEMENT IS 08407 60123 DR 08407 6010T7T REBUILT AT THE SAME TIME A13 MUST BE REPLACED WITH 08407 60002 OR 08507 60102CREBUILT 56 590 65 3B 08407 60009 1 41 21 1 2 Al4C23 08407 60107 0160 3060 0160 3060 0160 2206 REBUILT 08407 60123 REQUIRES EXCHANGE 0 1 UF 20 25 0 1 UF 20 25VDCW C FXD MICA 160 52 08407 60107 3C42A CML 3C42A CML 0160 2206 AL4C4 0160 2206 C FXD MICA 160 5 0160 2206 AleC5 0160 3060 CER 0 1 UF 20 25V0CW 3C42A CML 14 6 0160 3050 CER 0 1 UF 204 25VDCW 3C42A CML A1L4C7 0160 3060 C FXD CER 0 1 UF 20 25VDCw 3C42A CML AL4CB 0160 3060 CER 0 1 UF 20 25VDCwW 3C42A CML 1409 0180 0116 C FXD ELECT 6 8 UF 10 35 0 1500685 903582 0 5 14 109 0180 0116 ELECT 6 8 UF 10 35VDCH 150D685X903582 DYS 14 11 0160 3060 C FXD CER O 1 UF 20 25VDCW 3C42A CML 41 12 0150 3060 CER 0 1 UF 20 25VDCNW 3C42A CML Al4CI3 0160 2016 C FXD MICA 62 5 500VDCMW RDM15E620J55 Al Cl 0150 0050 C FXD 1000 80 20 1000VDCW 0678102 1027526 45 12 0150 0050 CER 1000 PF
7. 5 1 33 20V 20V N L2 0 1 0 2 uH lus AAAS 20mV P P Ql SN uw l TEST CHANNEL INPUTS 1854 0431 12 DIR C10 RI9 824 1 WHTIRED 1 0 71 15 38 3 J4 RI5 187 dm2 NEN 192 5 192 5 96 25 10 TO 90 dBm 80 20 dBm i 10 10 dB ATTENUATOR eee 90mV l 50 dB ATTENUATOR x J3 ATTEN C11 R20 R25 R28 1 0 WHTIORN 247 5 71 15 247 5 CHAN ATTEN 20 TO 50 dBm 20 dBm MAX E 8407A Test Channel Converter Ser Pre 1144 x yr 2 _ J _ _ _ 7 u a e Is_w 0 8 us 0 6V P Pon in Q9 UU UU 1 1V P P 1854 0471 0 5V R12 90 9 L3 C22 023 37 8uH 470pF 8200 pF A4A1 BALANCED MIXER 105148 R49 26 1K R52 1 96K T C24 1 0 C21 2 2 ul T 3 83K 1854 0071 0 our P C27 R57 o 5 8V 0 47 2 37K R45 R48 1 33K 3 83K R54 028 1 1K iE 348 RF 20V 1854 0431 R C15 5 4V 422 10 AMPLIFIER 3 PA 74 DV CRI R39 RAZ i 681 750 R24 l 1 8 3 E 7 21 R30 R32 6 25 38 3 2 61K 0 10mV P P lt 50 dB ATTENUATOR R33 1 21K R25 R28 11 15 247 5 22 R23 C12 4 R26 R27 R29 J R31 R34 C17 16 1 11 96 25 L pF 96 25 61 11 122 2 2122 2 51 1 0 O UMRKGwO e w 0
8. r T X1 100 kHz HIGH X1 PASS FILTER 0 8 u SEC BVP s hs I E 6800 pF 5600 pF 016 x 0 033 R35 17 c9 316 T 0 022 T 0 018 pag J1 LO SIGNAL A dBm NOM 9 OSC NOTES 1 ALL WAVEFORMS AND VOLTAGES TAKEN WITH CIRCUIT BOARD INSTALLED ON CIRCUIT BOARD EXTENDERS 2 SEE FIGURE 7 2 FOR MEASUREMENT R20 209 CIN 0 1 TO OBTAIN WAVE FORMS AND VOLTAGES SHOWN R25 REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al 15 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN REFERENCE DESIGNATIONS m 1222 J CONDITIONS AND TEST SETUP l I DELETED Ul C A13 Figure 7 13 Automatic Level Control Amplifier A13 Schematic Diagram 7 13 Service Model 8407A SERVICE SHEET 4 A14 Phase Locked Oscillator PHASE DETECTOR The 278 kHz reference oscillator signal at the bases of Q9 and Q11 acts as the gating signal for the detector circuit Detection occurs in the two differential amplifier circuits formed by Q7 Q8 Q10 and Q12 Q13 forms a constant current supply for the phase detector SEARCH AMPLIFIER The search amplifier is formed by constant current source Q5 and differential amplifier Q3 and Q4 The dc voltage from the search amplifier
9. 0160 3060 C FXO CER 0 1 UF 20 25VDCW 3 2 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 1500685 903582 0 5 See introduction to this section for ordering information 6 13 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Reference Tp Mfr 0180 0115 Mfr Part Number Al4 c190 C FXD ELECT 6 8 UF 10 35VDCW 150D685X9035B2 DYS 14 11 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML 14 12 0180 0197 C FXD ELECT 2 2 UF 10 20VDCW 150D225X9020A2 DYS 14213 0180 0100 C FXD ELECT 4 7 UF 10 35VDCW 150D475X9035B2 DYS 14 14 0180 0197 C FXD ELECT 2 2 UF 10 20 1500225X9020A2 DYS 14215 0160 3060 C FXD 0 1 UF 20 25VDCW 3C42A CML ALGC16 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML AL4C17 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML 1 4 18 0160 3490 C FXD CER 1 0 UF 20 50VDCMW 8131 050 651 105 14219 0160 3060 CER 0 1 UF 20 25VDCM 3C42A CML 14 20 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML AL4C21 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 1500685X9035B2 DYS Al4C22 0180 0116 ELECT 6 8 UF 10 35V0CW 1500685 903582 0 5 Al4C23 0160 2016 C FXO MICA 62 PF 5 500VDCMW RDM15E620J5S 1 2
10. 2D i I 1220 881 ie 222 8 lt lt 3D 2 lt 2 gt lt HE A M ETE ae 0100 6681 4OLVIGNI A995 GOZO PGRI 4820 91 270 AQ O 39101 1091902 29 ev 9v 0 d i ot mol m 081802 29V 110 6620 0681 1 gt shen veel sx V6D o EA AL 2 8033 EE i i 29v yt i L p st Eo I 19 x i l i t 4 tie I e i Adz NES St 21 4 08 02 E IF 01 Ade gt zi MR 12 814 19 ptas iu 28 K cd m rS pem TTE UE 4 ha vow zu ASSY BY 92 14 8 10 amp 182 1 12 SNOI1VN91S3G 32N343418 4 31 1dWy 3 mojag pu 600 696 Iviuag H a8uvy QV 4aiijduy OD V 12uunu 1591 L6 L ANSIA SLN3HOQWO2 83 10 4O 5 30 LY A18w3SSY 30 NOILYN91S30 IId i an AO SKOLLYN9IS30 33 353338 2 NAOHS SY 313214402 lary l 38wWnH AgW3SSY 532001712 QilYviA3488v 3uY 531180255 US r 7135 03H3iVW 03121135 012 3 8 032 1438 38 01 0 5 3001 Tw 0133 1438 38 01 5433 5401515 1 FHL 40 ANY 4 JO 115 G3HI
11. 0345 s Oe 4 1854 0247 C2 A15 A6 _ 22 pF 6 6V LOOUT 9 16 O C 4 JIN R12 R14 a pie 2 378 kHz TO OSA 21 5 3160 p 110 278 LOCAL ki asi n 3r OSC SIGNAL 1 8 C5 35dBm NOMINAL lt 0 47 0 47 l XA13 20 V f i 0 8 uSEC 23 1 100 mv i HAV 92 DC CTR 12V DC CTR 0 8 uSEC 20V 20 Vf C31 32 0 8407A Automatic Level Control Ser Pre 1144 lt nnVO TF MT _ll TE D rrr re eee oe IDENT GAIN X100 MHz DIFFERENTIAL AMPLIFIER x 100 kHz HIGH X0 5 PASS FILTER imn S u a nra m T 0 8 u SEC l 1V P P 2 17 8VDC 20 VF R30 R32 0 8 u SEC 20 VF C9 0 47 LEVEL R27 1 gt 2000 C8 C R28 0 g 5y 185470280 Ja gy TA 72 yN 3 3V C30 Cl RI8 qo 2 eae 0 8 uSEC 012 3 3 VDC CTR 0 47 J U AVA 130 mv P P 0 47 R20 C29 E R17 9 2 3IK 0 1 0 8 USEC 23 21 5 m p 20Vf 7 4V 3 3V 02 1821 0001 DC CTR 12V DC CTR E z 1 UUUl 1 0 8 uSEC 1 1V R25 440 mV P P 1000 8 2 ISEC 3 39 U2 1821 0001 y 3 3 VDC 30 mV P P T i 1000 Service
12. a oo y Ww 46 AK ey SU us Q lya cc 23V Part of Figure 7 35 Power Supply A17 and Diode Board 5 Schematic Change G Serial No 965 00315 and Below 9 Appendix I Model 8407A CHANGE H Page 6 9 Table 6 1 Change A8C17 to HP Part No 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW Delete A8C18 Page 6 17 Table 6 1 Delete A17C5 and A17C6 Delete A17R 19 and A17R20 Page 6 18 Table 6 1 Delete A17R21 and A17R22 Page 7 19 Figure 7 19 Replace Figure 7 19 in Section VII of Manual with Figure 7 19 Change H in this Appendix Page 7 27 Figure 7 27 Replace Figure 7 27 in Section VII of Manual with Figure 7 27 Change H in this Appendix Page 7 35 Figures 7 34 and 7 35 Replace Figures 7 34 and 7 35 in Section VII of manual with Figures 7 34 and 7 35 Change H in this Appendix CHANGE Page 5 19 Table 5 5 under Align Test Table 5 5 Change 4 A 4R16 PLO OUTPUT Adjusts PLO output level Selected value Page 6 13 Table 6 1 Change A14 to HP Part No 08407 60009 and also change all of the associated A14 board components per the attached parts list If it is necessary to replace A14 it should be replaced with HP Part No 08407 60123 or 08407 60107 rebuilt At the same time A13 must be replaced with 08407 60002 or 08407 60102 rebuilt Page 7 15 Figures 7 14 and 7 15 Change parts location photo and circuit board schema
13. gt 5110 R20 20V f cH 26105 K 9 0 7V C2 2838 R54 68 14 7K R19 CRI Qe 8250 awi 23 7K 1853 ED 020 20V 19 8 19 8 20V R55 300m SEC 9090 SEE NOTE 1 gt LOW PASS FILTER x BUFFER ME 20V fi R30 n 199 722 MHz 13 dBm m p NOMINAL R47 31 0 um 0 H 511 775 mV 0001 24 C27 C28 wd 2 033 T 032 l uH ii 27 pF R48 d 20 pF 10 10 gt 287 a d 21 R49 C29 1000 0 1 L12 150 uH Wa V C26 Service P O SEARCH AMPLIFIER 20V f m 0 TO 20V 4640 R15 a TEST VOLTAGE 10 7V 10K 2 9 OUTPUT 05 RI 1853 0020 1 ie 3830 47 1 10K R12 RIA 1 1100 1100 6 6 V X 03 Cs 3830 1853 0020 N Q4 A 1853 0020 C12 v 22 12 5 4 R11 7300 REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al 5 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN 10 9V 20V O V Ma 2610 D Ww R54 NOTES 1 WAVEFORMS AT XA14 13 DET OUT IS NORMAL WITH FRONT PANEL REF CHAN INPUT DI SCONNECTED 2 FRACTIONS INDICATE NOMINAL VOLT AGE WITH INSTRUMENT PHASE LOCKED TO CW INPUT TOP VOLTAGE AND NOMINAL VOLTAGE WITH NO FRONT PANEL REF CHAN INPUT AND BOTTOM VOLTAGE WITH SEARCH LEAD XA14 23 TO 14 22 DI SCONNECTED R19 6
14. 20V 7 lt 7 gt v 12 3 OUT 1 EET i 6 lt 6 195 l DS DET f lt 4 4 2 C4 0 Q TEE LO IN p 8 522 lt FO AL a 2 2 23 gt 1 gt l a M 8407A Master Board Ser Pre S lt a s mt U D e n e 12 OUT TO 12 VERN OX lt 11 20V lt 6 C 86 1 10 2 9 wy 4 NA VIO 3 IN FROM VERN N 20V lt 7 INFROM 932 20 lt l T AMP VERN B XALIA um 20 lt 4 REF IF FROM OUT CN v B 20V 6 T lt IN i 2 Lo IN ys gis T rod OUT 4 M M t s _ m Q a s O _ VTO 0UT REF FROM CONV 24 95 is PF MMMMMMMM 22 lt 6 lt 5 lt 4 lt 3 2 5 4 N C 3 E C 2 x gt C l C Service TEST CHANNEL PHASE TO
15. 562 OHM 1 1 2 0757 0815 9123 0757 0818 R FXD MET FLM 825 OHM 1 1 2W 0757 0818 Alb5kR24 0757 0158 R FXD MET FLM 619 OHM 1 1 24 0757 0158 415325 0683 2025 R FXD COMP 2000 OHM 5 1 4W CB 2025 16526 0683 2025 R FXD COMP 2000 OHM 5 1 4W CB 2025 ALSTL 08552 6018 TRANSFORMER RFCCODEZREDI 08552 6018 15 72 08553 6012 TRANSFORMER RF CODEZBLUE 08553 6012 ALST3 08553 6012 TRANSFORMER RFLCODEZBL UE 08553 6012 1571 9170 0847 BEAD SHIELDING 56 590 65 3B RECOMMENDEO REPLACEMENT 1572 56 590 65 38 9170 0847 BEAD SHIELDING RECOMMENDED REPLACEMENT BEAD SHIELDING RECOMMENDED REPLACEMENT BEAD SHIELDING RECOMMENDED REPLACEMENT A1623 91 70 0847 56 590 65 38 8157 9170 0847 56 590 65 38 A17 17 A17C1 17 2 08407 60013 08407 60113 0160 2211 0160 2211 BOARD ASSY POWER SUPPLY REBUILT 08407 60013 REQUIRES EXCHANGE C FXD MICA 510 PF 5 300VDCW C FXD MICA 510 PF 5 300VDCW 08407 60013 08407 60113 0160 2211 0160 2211 AY7C3 C FXD ELECT 4 7 UF 10 35VDCW 0180 0100 1500475 903582 0 5 172 0180 0100 ELECT 4 7 UF 10 35VDCW 1500475 903582 0 5 1705 0170 0040 0 047 UF 10 200VO0CW 192 47392 5 41726 0170 0040 MY 0 047 UF 10 200VDCW 192 47392 5 1 1902 3245 DIODE BREAKDO
16. gt I NI lt lt 4 00 691 1400 81 2 HOS ABI 60 I Ag 0200 681 Ab G E 1 i 1 _ 20 AL GI 1200 peel EN 00 Ab 6s AQ 94 HOS di 081 a 1 ms lt a d 4 H 8 T 2 0700 6487 1 AX 0 mets 80 4 0002 7 am AZ JOVLIOA 1531 Ki L oma EM TN 1VN9IS 13NNVH2 910 MLS jn 7H3822 y at isu JUPE NON i gt 8314 14 H23V3S Z N 30123130 3SVHd ldWv mor N _ ae _ rA 29 13 9v Oid 160009 0980 YOLVITIOSC 431201 3SVHd 19 Model 8407A Appendix I A13 EN ind at REY BPE nl 5 s 2027 EHON stt tet nt EXE eve EUIS tet A138 ter for Automatic Leuel Control Ampli Serial No 924 00130 and Below Figure 7 12 Parts Location Change L 1 20 Appendix I Model 8407A 08100 76 1014 5 T 1041u07 19491 ajowojny angi ELV i
17. 20 Vdc power supply output the power supply will turn off approximately 1 5 Vdc output To clear the condition turn power off and set A17R7 and A17R16 to midrange Apply power and adjust for 20 Vdc PROCEDURE a Check for 20 Vdc 20 1 Vdc at AL7TP3 with DVM If out of tolerance adjust A17R7 Check for 20 Vdc 0 1 Vde at A17TP2 with DVM If out of tolerance adjust A17R16 5 21 Maintenance Model 8407A Table 5 6 Alignment Procedure cont d TEST PROCEDURE AND DESCRIPTION 3 PHASE LOCKED OSCILLATOR ADJUSTMENT A14L7 DESCRIPTION The output of A16 is first checked to be sure the RF output is sufficient for proper phase lock operation The phase locked oscillator is then adjusted to produce a 278 kHz IF signal from the test and reference converters A3 and A4 When the phase locked oscillator is adjusted near the correct frequency 199 722 MHz a phase detector locks and holds the oscillator producing a constant 278 kHz IF signal The oscillator frequency is adjusted for a correction voltage of approximately 9 Vdc This places the natural frequency of the oscillator in the middle of the capture range PROCEDURE a Check output of A16 VTO Amplifier Assembly as follows 1 Disconnect coax cable from A6 Assembly connector labeled VTO OUT accessible under swing out converter casting Connect Spectrum Analy zer input to VTO OUT connector 2 Set Sweep Oscillator for single frequency operation and slowly tu
18. C feedback ampli TO SHEET 2 A A LLL Model 8407A FROM SHEET 1 Disconnect miniature coaxial cable at A3 LO connector at bottom of A6 master board and connect oscilloscope to dis connected cable from A13 LO TO CON V output XA13 10 Waveform should be a 1 4V peak to peak searching sine wave signal Reconnect cable after measurement YES Check waveform with oscilloscope at XA11 2 for a 0 4V peak to peak 278 kHz searching sine wave signal YES Trouble is in A11 Reference AGC amplifier FROM SHEET 1 wara Disconnect miniature coaxial cable at A15 LO OUT TO ALC connector at bottom A6 master board Connect oscilloscope to A15 LO OUT TO ALC connector and waveform should be 10 mV peak to peak searching waveform Reconnect cable after measurement YES Trouble is in A13 Auto level control amplifier Trouble is in A8 reference channel con verter miniature coaxial cable at UT TO ALC connector at Disconnect miniature coaxial cable at A6 master board Connect A14 PLO OUT connector at bottom of NO to A15 LO OUT TO ALC A6 master board Connect spectrum ana Trouble is in A14 Phase locked osci lyzer to A14 PLO OUT connector and tor signal level should be 13 dBm Recon nect cable after measurement nd waveform should be 10 peak searching waveform cable after measurement YES YES in A13 Auto
19. Encloses front panel designations Encloses rear panel designation Circuit assembly borderline Other assembly borderline Heavy line with arrows indicates path and direction of main signal Heavy dashed line with arrows indicates path and direction of main feedback Wiper moves toward CW with clockwise rotation of control as viewed from shaft or knob Numbers in circles on circuit assemblies show locations of test points Encloses wire color code Code used MIL STD 681 is the same as the resistor color code First number identifies the base color second number the wider stripe and the third number identifies the narrower stripe E g denotes white base yellow wide stripe violet narrow stripe Voltage regulator breakdown diode Denotes Field Effect transistor FET with N type base Denotes FET with P type base Denotes Capacitive diode varactor Denotes Silicon Controlled Rectifier P Type Metal Oxide Substrate FET MOSFET N Type Metal Oxide Substrate FET MOSFET Figure 7 2 Schematic Diagram Notes 1 of 2 Model 8407 A SCHEMATIC DIAGRAM NOTES cont d SWEEP OSCILLATOR HP 8601 OR NETWORK ANALYZER 8690 86988 OUT VTO INPUT 8407A 8412A cog e POWER SPLITTER HP 11652 60009 DIRECT SWEEP RF g 50 0HM OUT OUT TERMINATION iia AJ i 10 1 VOLTAGE DUAL TRACE DIVIDER OSCILLOSCOPE PROBES DC DIGITA
20. UG 274 B U Part of HP 11652A Accessory Kit 5 7 Maintenance Model 8407A Table 5 3 Performance Test cont d TEST PROCEDURE 3 cont d PROCEDURE a Connect equipment as shown in test setup Adjust the sweep oscillator output level for 4 dBm Minus 4 dBm less power splitter insertion loss of 6 dB 10 dBm at 8407A input Connect both power splitter outputs to the 8407A DIRECT inputs Set sweep oscillator for minimum sweep width at any frequency in the 8407A operating range Set 8407A REF CHAN LEVEL ADJ switch to lower position Set 8412A BW kHz switch to 0 1 MODE switch to DUAL AMPL DB DIV switch to 0 25 and PHASE DEG DIV switch to 1 0 Adjust the 8407A DISPLAY REFERENCE switches and AMPLITUDE VERNIER control to place the amplitude trace on a major graticule line Adjust the PHASE VERNIER control to place the phase trace on a major graticule line Reduce the RF output from the sweep oscillator by 30 dB one 10 dB step at a time and note change in phase and amplitude trace position at each 10 dB step The amplitude trace should not move more than 0 5 dB and the phase trace should not move more than 0 8 degrees for each 10 dB step DISPLAY REFERENCE 1 dB STEP AMPLITUDE ACCURACY SPECIFICATION Amplitude Accuracy is lt 0 05 dB 1 dB step total error does not exceed 0 1 dB DESCRIPTION The equipment is set up to obtain a zero dB indication zero volts on DVM wi
21. 0 7 V R45 5110 K4 REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY At 15 AIR DESIGNATIONS OF OTHER COMPONENTS ARE Q COMPLETE AS SHOWN CB C15 C16 aye 19 0 1 60 5 0 1 _ REFERENCE DESIGNATIONS 28 03134 R29 832 R36 R41 R42 2843 2461 147 T30pF 200 38 3K 422 7 C20 147 20 F4 4640 0 1 0 1 20V 20V 20V NOTES 1 SIGNALS AT TEST POINTS 30 dB 30 dB 278 kHz SINUSOIDAL ATTENUATOR ATTENUATOR SIGNALS UNLESS OVERLOADING T SF I i UU _ OCCURS IN A STAGE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN a Figure 7 29 Programmable IF Attenuator A 7 Schematic Diagram 7 29 Service SERVICE SHEET 12 A1 Front Panel Switch Assembly amp A2 Front Panel Assembly A2 COMPONENTS 208 is an auto manual switch This is used for computer remote control to disable the manual DISPLAY REFERENCE 10 dB step switch In manual mode Q3 conducts applying 20 Vdc to the wiper side of the DISPLAY REFERENCE 10 dB step switches Integrated circuit U1 amplifies the AGC signal driving the REF CHAN LEVEL meter Diodes CR1 and CR2 prevent any overvoltage from damaging the meter Transistors Q1 and Q2 amplify the overload signal from the test channel converter and test channel Model
22. 39 0x i QT i 12 E e 0 T dd ARD 1 ELT AQT aan Ts it 7 peas T ed 364 de or sT al n 99 87 T dq o 2 0 ie ee i T T j 29 sta 359 2227 be 5 i 1 4 J AZ gt r S t i i H WET 0791 21 0841 0116 gt 224 n Tx c ERES E ah j i j M 9V Od Az t i Eo e 1031N02 NI v9 33131 1dWV o Lops dv 29v INN HO JONI e r Model 8407A Appendix 1 av ee Yd Td Tn d Hsnd MN Yad dW 8 89 Te ARZ 4 8 19 T EN 2 pare 0 0192 NL89 5 EVA 518 01894 082 0011 M 0628 ATO 0 a d d 0 90 t 9 4 xe F E he 0 2 61 579 579 0612 iLL L P 0192 am awo AE By a se E 224 3015 8 X PVX ID o A 116 116 915 1 a gic bas 2 918 eld preci i T3NNVHO 1S31 i 191812 620 pS61 6620 0681 vy lt WN9IS I T3NNYH2 wolvrnauy E 1100 1981 5311 2H3822 Sm O1 Mb 10 E j i w ak 5 RY 52 vd 1 000 681 eV
23. 646 AV x AGC 72 3 1 C2 3 6 us 6 8 6 8 AD 0 T 0 12V p L 0 04V P P 511 R10 NT 1854 0295 64i CONTROL VOLTAGE gt 2 2 _ 8 535 3 6 us i A3 0 R 0 32V P P P MIXER T REF IF VWM 0 18V 8 5V FROM GRA CONV 218 KHz OV 205 o an R1 SIGNAL gt 5110 E AB 8407A REFERENCE CHANNEL AGC AMP SER PRE 1144A NOTES 1 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN DUAL TRANSISTORS 804 A805 1104 AND 1105 ARE A MATCHED SET OF FOUR IF ANY ONE OF THE TRANSISTORS NEEDS TO BE REPLACED ALL FOUR SHOULD BE REPLACED BY A FACTORY SELECTED MATCHED SET NELAGC AMP 08407 60004 gates AMPLIFIER GAIN CONTROL CELO UOS ee 20V R2 R14 iy R22 750 5110 1620 Cl C2 6 8 6 8 n P w R3 Q5A 511 R10 5 0V 1354 0295 1854 0295 147 0 2V Q5B 1854 0295 lmv C 0 47 1854 0295 147 x R16 Ar A CR3 C10 us pF 0 51 p 6 6V 1 3 64 SEC 6 E AA 5 5V P P R21 ANA 6V ctr 0 99 20V 20 dB AMPLIFIER pUSH PUL AMPLIFIER _ F AMPLIFIER CCS REFERI ASS ASUREMENT CONDITIONS AND REFERENCE DESIGNATIONS WITHIN OUTLINED WAV
24. A Ain Re a pr 28 TEST AMPE HAR T Jg A TENGATUS I 2 A2A2 BEHIND PLATE Jl PLO FREQ 4 LO LEVEL Al3R27 Al2 A9 Figure 7 4 Location of Major Assemblies and Adjustment Points 1 of 2 Service BOTTOM TI Q2 QI AS A4LI A3 J J6 Figure 7 4 Location of Major Assemblies and Adjustment Points 2 of 2 7 3 Model 8407A TEST SETUP NOTE When connections to PC plug in boards are referenced convenient access 15 obtained in most cases by using exten sion boards HP Stock No 5060 0050 However some boards will operate erratically when unshielded and should not be placed on extension boards These boards are A14 A15 and 16 Connect equipment as shown in test setup Figure 7 6 Install 8412A Phase Magnitude Display into 8407A Set 8407A controls as follows REF CHAN LEVEL ADJ switch to middle position DISPLAY REFERENCE switches to top position AMPL VERNIER and PHASE VER NIER controls to midrange DISPLAY REFERENCE CAL for zero dB at top Power pushbutton lighted Set 8412A controls as follows MODE switch to DUAL AMPL DB DIV switch to 10 PHASE DEG DIV switch to 90 PHASE switch to BW kHz switch to 10 Set sweep oscillator for single frequency CW operation at 1 0 MHz YES INPUT SIGNALS Connect oscilloscope to J1 REF CHAN NEL DIRECT using a BNC tee at t
25. INTERCONNECT CABLES ia DEP 6 i TERMINATIONS wt SERVICE CABLE POWER CABLE RACK MOUNTING KIT Figure 1 1 Model 8407A and Accessories 1 0 Model 8407A General Information SECTION GENERAL INFORMATION 1 1 DESCRIPTION NOTE The Model 8407A Network Analyzer may be maintained using the modular exchange program provided by the fac tory See Paragraph 5 3 for details 1 2 The Model 8407A Network Analyzer to gether with an appropriate plug in display unit and swept frequency source measures the phase and amplitude ratio of RF signals in the 0 1 to 110 MHz range With appropriate accessories the instrument may also be used as a reflectometer measuring phase and magnitude of a reflected sig nal 1 3 The 8407A measures phase angles from zero to 360 degrees and amplitude ratios over a dy namic range of 80 dB These measurements may be made at single frequencies or over swept segments of the operating range 1 4 Typical measurements possible with the net work analyzer include 1 Swept frequency response measurements of amplitude and phase through a system filter or amplifier 2 Group delay measurements for communi cations systems 3 Antenna testing 4 Comparison of amplitude and phase of matched amplifiers 1 5 The Model 8407A converts the two RF sig nals being measured to two 278 kHz signals that have the same relative amplitude and ph
26. MA Os i i T e lc i ve AQ gt 0 2 AR Wale gt 2 i SINK VH ide z isu d AQ I BE i E TE qvx OL T F NI 19 v 709 L NALLY eta x13 T exci gt was 503 TINNY re ZH REZ T 0 0 11 lt I 5 1200 PSBL 9 700 A9 91 TT ae S dad on IX G311081N03 29 AQ le 0100 581 Ag ge A2 s f L i 2 59 10 sigg EXE TT 8v idis UC ERO sa WES Me IIS 1 yo 6 39 61 gza 5 1narno ST I S k al L stig n l s 9 IT i 1 4 I A 9 4 gt 5l 5 wor nt 812 506 9165 219 2 50 Pra 18 vta 25 024 eH AR Ale ADZ AG i 11000 040 MOIV IN3liy 41 T 8VyywV 8905 d IV 1 8 Model 8407A CHANGE G Page 6 18 Table 6 1 Change FL1 to HP Part No 9100 2586 Change W2 to HP Part No 08407 60059 Change W17 to HP Part No 08407 60059 Change 91 to HP Part No 3101 0100 Page 6 19 Table 6 1 Change CABINET PART Item 12 to 12 08407 00002 PANEL REAR 12 08407 60056 PANEL ASSY REAR Page 7 35 Figure 7 35 Appendix I Change power supply schematic in manual Section VII per the attached partial schematic S LPOWER O LINE VOLTAGE 115 OR 230VAC 10 50 60Hz J 52
27. electrolytic encapsulated external farads flat head Fillister head fixed giga 109 germanium glass ground ed HDW HEX HG HR Hz IF IMPG INCD INCL INS INT K LH LIN LK WASH LOG LPF M MEG MET FLM MET OX MFR MHz MINAT MOM MOS MTG MY N N C NE NI PL Hl H H H H H H H H Hon Sg H H H il il l H H H I H H i J H H a H tl Hl H H REFERENCE DESIGNATORS fuse P Filter Q jack R relay RT inductor S loud speaker T meter TB microphone TP mechanical part U ABBREVIATIONS henries N O hardware NOM hexagonal NPO mercury hour s Hertz NPN intermediate freq impregnated NRFR incandescent include s insulation ed NSR internal OBD kilo 1000 OH left hand OX linear taper P lock washer PC logarithmic taper PF low pass filter PH BRZ milli 10 3 PHL meg 106 PIV metal film metallic oxide PNP manufacturer mega Hertz P O miniature POLY momentary PORC metalized POS substrate POT mounting 4 1 22 PWV nano 1079 normally closed RECT neon RF RH nickel plate Hou H HW th H H JH H l HI 1 lo H M l H li beh H H N H H H l H H plug trarisistor Yesistor thermistor switch transformer terminal board test point integrated circuit normally open nominal negative positive zero zero tem perature coef ficient negative positive negative not recommended for field re placement not separately replaceable ord
28. switch circuits as follows DISPLAY REFERENCE 10 dB STEP 0 top 10 20 30 40 50 60 70 80 19 VDC at XA7 PINS YES Trouble is in A7 IF attenuator If trace movement is out of tolerance in the zero to 30 dB setting of 355D atten uator trouble is probably saturation in an amplifier stage Connect oscilloscope and note peak to peak waveform at XA8 2 2 XA7 11 XA9 1 and J7 IF TEST OUT on rear panel calculate gain of each stage Insert 30 dB of atten uation with 355D attenuator again ob serve waveform at each stage and calcu late gain Compare gain to determine which stage is saturating under large signal conditions Check for correct signal voltage to IF attenuator relays from front panel Trouble is in Al front panel switch assy switch circuits as follows DISPLAY REFERENCE 19 VDC at PINS 10 dB STEP 0 top 10 20 30 40 50 60 70 80 YES Trouble is in A7 IF attenuator Set DISPLAY switch to each play should chi Adjust AMPLI through its rat on 8412A shou SHEET 3 Set DISPLAY REFERENCE 1 dB step switch to each position and 8412A dis Turn off 8407A and check resistance between A2A2 Pins 2 and 3 ground The following resistance values should be obtained YES DISPLAY play should change by 1 dB step REFERENCE RESISTANCE 1 dB STEP OHMS 0 top 55 1 8195 T2 3862 3 242
29. 08407 60011 u 20V R2 F R3 147 3 1950 C24 L CA 82 pF 15 OUTPUT R26 L 511 18V L Q2 10 6 V N 1854 0023 10 5V UR Ri Ql ATTENUATOR XAT 1048 lt 5 PROGRAMMED TE ATTENUATION 2 08 7 6 FROM FRONT PANEL CONTROL 73048 lt 9 lt 628 mV Q3 56 1854 0071 R17 196 6 03035 R18 62pF 28 20V ee 00524 N I m A ti h O x _ R20 R23 3830 Cll C12 316 15 15 20V V R34 R37 3830 18 316 15 15 iS V V V A j 70 mV P P i C6 C9 Clo s 0 1 60 15 R12 R13 30 18 lt R22 R27 147 c 14 bopr 38 3K 422 47 0 1 20V 20V RII 147 C8 0 1 JA 10 OR 20 dB ATTENUATOR CRS CB C15 C16 ped 0 1 60 15 285 C312 R2 5 R32 R36 147 30pF 200 38 3K 422 l 0 1 20V 20V 20 dB ag TT BUFFER 2 ATTENUATOR Service m v x MM M n e 8 20V 20V 70 R34 R37 R44 35305 17 C18 316 4640 15 15 i C21 13V V 0071 0 834 N gt 45 1 3V 2 VP P
30. 1014 5 911D149119S F T V 401011980 payxIoT asoyd o 941811 NAOHS Y 3134800 IVY SIN3WOdWO2 8 0 30 SMOILYNDIS3O laly 1 lv AT8W3SSY 40 iM B 4 ATENaSSY 30772 NM MOllYvNOIS3Q 71103 3349 JAY S31lg03SSY 48 1100 SNOLLYN9IS30 3283983433 7 SOLWANALLY 318v FI YA ZHU 2 M 38 1 l HE Spt O vegp AQ if J AW 401111950 3201 328VHd id tp T 182 bot 44 29 EB Gast 8100 7681 910 NMOHS S39V110A ONY SWHOSIAYM N1VISO 401365 1531 ONY SNOTLIQNOO INAWIYNS 2 2 330913 115 Ni ino x Hf TO usto HAsO KATO 4479 D ACE a QM 11 N g1 6 on 2 12 Ua uy L5 I pai U Ag T 9 014 0200 S81 828 ASOT Ino 0914 13448 2 3 x HAO 09 1200 0681 eu lt i if SR gt 89 L 2 YI S C sx 2 U 22 gt ent ZH3 922 5 M01vVT112S0 32N343434 ZH 8 2 901 35 4 i d 961 I I 192 192 6 VE t lt gt i i 24 208 5
31. 122 2 2122 2 SEE FIGURE 7 2 FOR MEASUREMENTS TIONS AND TEST SETUP TO OBTAIN WAVEFORMS PE nor s C c MC MEC AND VOLTAGES SHOWN Service e w s s s n mFMKYD Ty _ _ _ e e D eee a DEED E E 0 1 3 0 29V P P 20V R46 J R48 C23 ues 1 0 T C27 R49 R52 R56 C29 1 0 Q12 Q5 1854 0071 S V 024 Ro4 C28 0 47 0 47 vM 0 85V 0 13 R53 R57 121 07 422 1 R58 0 02V 0 6 21 5K 2L5K Q6 ve AJ 0 68y Nw 1854 0071 0 08 R66 R65 6 19K gt 26 1K CR 08V 0 23V P P R51 20V 0 15V 261 005 20V GRA VIO MM x _ REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY A IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN eae REFERENCE VW E CHANNEL V pH Y SIGNAL 10 TO 50 dBm REFERENCE DES IGNATIONS SEAT A3 ASSY A A 172 28 NOTE SEE FIGURE 7 2 FOR MEASUREMENTS CONDI TIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN UPPER POSITION Oo o 1 q MIDDLE POSITION o LOWER POSITION REF CHAN LEVEL A
32. 3 15 To perform a typical reflection measure ment use the following general procedure 1 Connect equipment as shown in Figure 8 4 Connect the RF short to the LOAD port of the directional bridge Set the REF CHAN LEVEL ADJ switch to the middle position Adjust the signal source RF output level for an indication in the OPERATE range of the REF CHAN LEVEL meter Be sure the test channel UNCAL REDUCE INPUT RATIO light is not lit If it is lit reduce the RF power Model 8407A from the signal source or change the REF CHAN LEVEL ADJ switch position until the light goes out With the RF short installed on the LOAD port the reflection coefficient is 1 0 at 180 degrees and the return loss is zero dB Adjust the plug in display unit 8412A 8413A or 8414A for a convenient zero reference If an 8412A is used adjust the 8407A DISPLAY REFERENCE and AMPL VERNIER controls for a magnitude trace on the top graticule line of the 8412A CRT and adjust 8407A PHASE VERNIER to position the phase trace on a convenient graticule line If an 84134 is used with an oscilloscope for swept operation adjust the oscilloscope amplitude trace to the top graticule on the CRT and the phase trace at a convenient center scale position lf an 8414A is used adjust the 8407A DISPLAY REFERENCE AMPL VERNIER controls to adjust the dot to the center left edge of the CRT Remove the RF short from the LOAD port of the directional bridge and connect
33. B 1251 2282 CONNECTOR PC EDGE 6 FORK CONTACT 190 220 00 A6XAB 1251 2283 CONNECTGR PC 6 TUNING TYPE CONTACTS 190 221 00 ASXAB 1251 2282 CONNECT OR PC EDGE 6 FORK CONTACT 190 220 00 A6XA9 1251 2337 CONNECTOR PC 6 TUNING TYPE CONTACTS 190 230 00 A6XA12 1251 1283 CONNECTOR PC 6 TUNING TYPE CONTACTS 143 006 07 1158 A6XA108 1251 1283 CONNECTOR PC 6 TUNING TYPE CONTACTS 143 006 07 1158 AGKALLA 1251 2283 CONNECTOR PC 6 TUNING TYPE CONTACTS 190 221 00 A6XA118 1251 2282 CONNECTOR PC EDGE FORK CONTACT 190 220 00 A6KA12 1251 2337 CONNECTOR PC 6 TUNING TYPE CONTACTS 190 230 00 A6XA13 1251 2283 CONNECTOR PC 6 TUNING TYPE CONTACTS 190 221 00 ABXA13B 1251 2281 CONNECTOR PC EDGE 6 FORK CONTACT 190 219 00 A6XA14 1251 0478 CONNECTOR PC 2 X 6 12 CONTACTS 252 06 30 340 6 18 B 1251 0478 CONNECT OR PC 2 X 6 12 CONTACTS 252 06 30 340 AGXAL5 NOT ASSIGNED A6X415 1251 2397 CONNECTOR PC EDGE 6 FORK CONTACT 190 237 00 A6XA168 1251 2396 CONNECTOR PC EDGE 6 FORK CONTACT 190 238 00 A6XA17A 1251 0478 CONNECTOR PC 2 X 6 12 CONTACTS 252 06 30 340 7 1251 0478 CONNECTOR PC X 6 12 CONTACTS 252 06 30 340 A6XA18 1251 0478 CONNECTOR PC 2 X 6 12 CONTACTS 252 06 30 340 A6XA18 B 1251 0478 CONNECTOR PC 2 X 6 12 CONTACTS 252 06 30 340 AT 08407 60011 PROGRAMMAB
34. CRI 10 dB 2148 3008 30 dB 13 P O WI1IP O 11 e O Q MN 10 i 1 x IMANUAL 20V AUTO OV MANUAL 9 8 8 UTO UAL OVERLOAD 22522 Ino H3 20 o O R2 o E e 19 PIO 10K 287 1 NOTE 1 I REF CHAN LEVEL ADJ 251 UPPER POSITION R1 MIDDLE POSITION LOWER POSITION 8407A Front Panel Switch Assy Ser Pre 1144A A2 FRONT PANEL ASSY 08407 60022 A2A1 PHASE VERNIER 08407 60024 PHASE VERNIER VERNIER R3 100 278 KHz REFERENCE CHANNEL SIGNAL TA 8 V yvV M 0 A6 A7 OUTPUT 278 KHz TO im XAT TEST VERN A CHANNEL Lo SIGNAL _11 13 WI PIO _ _ 0 A6 0 w VW AGC 20V J I 24 1 AUTOIMANUAL 20V AUTO 0 20V 8 OVERLOAD D 159 0 1 PoJ x ei R10 9 6V 220 o 1854 ii 20V 01 19 ov 0071 R2 2 11 1593 0020 N a5 10 i 10 19 3V EIER N 6 R PM v c A 19K p
35. Front Panel Assembly Aland A2 Schematic 7 32 Parts Location for Master Board A6 7 33 Master Board A6 Schematic 7 34 Parts Location for Diode Board 5 amp Power Supply A17 7 35 Power Supply A17 amp Diode Board A5 Schematic Page 7 17 7 19 7 19 7 21 7 21 1 23 1 23 1 25 1 25 1 27 7 27 1 29 7 29 7 31 7 31 1 33 1 33 1 35 1 35 Model 8407A 7 14 1 14 1 28 1 29 7 35 7 19 gt D OU Qo H Table of Contents LIST OF ILLUSTRATIONS cont d APPENDIXI 2 Parts Location for Phase Locked Oscil lator A14 Change A Serial No 983 00446 thru 1103A00605 1 8 Parts Location for Phase Locked Oscil lator A14 Change E Serial No 948 00176 thru 983 00445 5 Phase Locked Oscillator A14 Schematic Change E Serial No 948 00176 thru 983 00445 6 Parts Location for Programmable IF Attenuator Change F Serial 972 00385 and Below 7 Programmable IF Attenuator Schematic Change F Serial No 972 00385 and Below M I 8 Power Supply A17 and Diode Bor 1 A5 Schematic Change G Serial No 965 00315 and Below 1 9 Reference Channel AGC Amplifier A11 Schematic Change H Serial No 959 00245 and Below 1 11 LIST OF TABLES Table Page Specifications 1 2 Rebuilt Exchange Assy Part Numbers 5 2 Recommended Test Equipment 5 3 Performanc
36. Model 8407 A Maintenance Table 5 2 Recommended Test Equipment Inst t Critical Specifications Recommended commen 180A 1801A 1820A 3439A 3443A 8601A 0 1 110 MHz Dual Trace Oscillo scope with 10 pF 10 1 probes Vertical Amplifier Dual trace Bandwidth 50 MHz minimum Horizontal Sweep Rate 0 1 uS cm Vertical Sensitivity 5 mV cm DC Digital Voltmeter Accuracy 0 05 Input Impedance 10 megohms minimum Automatic Range Selection Range to 150V Sweep Oscillator Range 0 1 to 110 MHz RF Output 13 dBm 8690B 8698B VTO Output Tracks 200 MHz from RF Output signal 0 4 110 MHz Spectrum Analyzer Frequency 500 kHz to 350 MHz 8554L 8552A 141S Plug In Indicator No substitute 8412A 0 120 dB Step Attenuation 0 to 80 dB in 10 dB steps 355D calibrated by Attenuator Input and Output Impedance 50 ohms standards Laboratory calibrated Calibration Amplitude at each 10 dB step to 80 dB Phase at 80 dB referenced from 0 dB position Calibration Accuracy 0 3 dB 1 degree Calibration Frequency 10 MHz and 40 MHz 0 12 dB Step Attenuator calibrated Attenuation O to 10 dB in 1 dB steps Input and Output Impedance 50 ohms Calibration Amplitude at each 1 dB step to 10 dB referenced from 0 dB position Calibration Accuracy 30 1 dB Calibration Frequency 40 MHz 355C calibrated by Trans
37. R FXD MET FLM 1K OHM 1 1 8 R FXD FLM 3 16K OHM 1 1 8W AMPLITUOE VERNIER ASSY REBUILT 08407 60053 REQUIRES EXCHANGE C FXD ELECT 1 0 UF 10 35VDCW CER 0 1 UF 20 25VDCW C FXD CER 0 1 UF 20 25VOCW C FXD CER 1 0 UF 20 50VDCW C FXD ELECT 1 0 UF 10 35VDCM C FXD 0 1 UF 20 25VDCW CONNECTOR RF 50 SCREW ON TYPE CONNECTOR RF 50 SCREW ON TYPE CONNECTOR RF 50 GHM SCREW ON TYPE SHIELD CAN TSTR SI PNP SELECTED FROM 2N3702 TSTR SI NPN TSTR SI NPN R FXD FLM 11 0K OHM 1 1 8 R FXD MET FLM 6 19K OHM 12 1 8W R FXD MET FLM 4 22K OHM 1 1 8W R FXD MET FLM 75 OHM 1 1 8W R FXO MET FLM 348 OHM 1 1 8W R FXD MET FLM iK OHM 0 1 1 8W R FXD MET FLM 464 CHM 1 1 8W R FXD MET FLM 464 OHM 1 1 8W MET FLM 196 OHM 1 1 8W R FXD MET FLM 75 OHM 1 1 8W R FXD FLM 28 7K OHM 1 1 8 BOARD ASSY REFERENCE CHANNEL CONVERTER OROER 08407 60154 W1O MATCHED PAIR WITHOUT EXCHANGE REBUILT 08407 60092 08407 60093t43 4 MATCHED PAIRC INCLUDES 10 08407 60040 MATCHED 1 0 TEST CABLEsREQUIRES EXCHANGE C FXO CER 0 47 UF 20 50VOCW C FXD ELECT 1 0 UF 10 35VDCW C FXD CER 20 PF 5 500VDCW C FXD ELECT 1 0 UF 10 35VDCW C FXD ELECT 1 0 UF 10 35VDCW CER 0 1 UF 20 25V0CH C FXD CER 0 1 UF 20 25VDCW C FXD CER 0 47 UF 205 50VDCW C FXD ELECT 1 0 UF 10 35VDCW CER 1 0 UF 20 5 C FXD 1 0 UF 20 SOVDCW C FXD CER 12 5 5
38. Reference HP Part Number Oty Description Mtr Mfr Part Number Designation Code 0160 2257 C FXD CER 10 PF 5 SOOVDCW 301 000 COHO 100J 0160 0174 C FXD CER 0 47 UF 80 20 25VOCW 5C11B7S CML 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 0160 2250 CER 5 1 PF 500VDCW 301 000 COHO 519E 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 150D685X903582 DYS 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 150D685X9035B2 DYS 0170 0040 C FXO 0 047 UF 10 200VDCH 192P47392 PTS 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 1500685 X9035B2 DY5 0160 3460 C FXD CER 0 05 UF 80 20 l100VOCW 023 10115037522 0 1901 0039 DIODE SILICON 200 SOWV 1901 0039 1902 0041 DIODE BREAKDDNN 5 11V 5 5710939 98 1901 0039 DIODE SILICON 200MA SOWV 1901 0039 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 1853 0020 TSTR SI PNPL SELECTED FROM 2N3702 1853 0020 1854 0295 TSTR S1 NPN 1854 0295 08407 8000 TRANSISTOR MATCHED QUAD 08407 80004 ABQ4 5 amp A11LQ4 5 REPLACE IN MATCHED 4 1205 0207 HEAT OISSIPATOR SEMICON DUAL TO 5 3207A PART A8Q4 1854 0221 TSTR SI 2N4044 1854 0221 1853 0010 TSTR SI PNP SELECTED FROM 2N3251 1853 0010 1854 0071 TSTR SI NPNESELECTED FROM 2N3704 1854 0071 0757 0438 R FXD MET FLM 5 11K OHM 15 1 8W 0757 0438 0757 0438 R FXD FLM 5 11K OHM 1 1 8W 0757 0438 0757 0280 R FXD FLM IK OHM 17 1 BW 0757 0280 0698 0083 RsFXO
39. gt IO got YI SLE cens 6 1 WW Od 3 21 HXO d Id Od r K qp E sss 4 i Ad K p c ay vss i ega 0000 1681 1 L_ 5076 anne PF AL 31 016 A A yor i I j en I PG a 00 81 i x96 T vu 119 10780 4184915 SV 12405 3 04 182 192009 10980 55 111938 K gt TWA I ur sup 8 1SQfQv ONY 33M0d Aldd 30A 39Nv HG LN Oi 9141Y ONY 18017 115 ANY 430 81 04 NOILIONOO 3Hi 919 20As L ATILYWIXOYd dY 430 Nun THA ATddfls 3 04 FHL 41 0 20402 YO Oc FHL N3H1l3 1 580220 JAZZ lt 40 39V 10A83AO NV 31 NMOHS 539V110A SWHOJJAVM NIVI8O OJ dfll3S 1531 ONY SNOIIIQNOO INIWIUNSVIW 803 2 4 380914 335 1 310N gel M3lI 401 3Sv8 21 m 2715 4 210 114 211 11 81 19 150 9 10 UD 8 I22 182 19 212 219 SISSYH 55 ASSY SV 1 SNO1IVN91S30 1 18 1338 ZHOO O6 35 IVAN 80 ST 39v110A 14 Model 8407A Appendix Table 6 1 Parts List for A13 in instruments with serial number 924 00130 and below and A14 in instruments with serial number
40. s wu d _ D LI I RT O L SERENE T x _ Service n T _n MM 0 14V 0 29V P P 0 15V L3 022 023 37 8uH 470pF 8200 pF 278 KHZ 1 TEST CHANNEL SIGNAL TE C3 OVLD Jl ims 5000pF ORN poc C2 0 47 2 37K AA NNN R54 C28 1 1K 1 20V RF N OVERLOAD AMPLIFIER AMPLIFIER REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN NOTE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN REFERENCE DESIGNATIONS A4 Figure 7 25 Test Channel Converter A4 Schematic Diagram 1 25 Service Model 8407A SERVICE SHEET 10 A8 Test Channel AGC Amplifier 7 dB AMPLIFIER 91 and Q2 form an input IF amplifier T1 changes the output from single ended to push pull output PUSH PULL AMPLIFIER Q3 forms a push pull amplifier which drives 2 through amplifier gain control Q4 and Q5 AMPLIFIER GAIN CONTROL Signal flow between Q3A Q3B and transformer 2 is controlled at Q4 and Q5 by the AGC control signal from A10 As the AGC control signal goes in the positive direction Q5A
41. 0 29 PO m E R NOTE 1 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN 2 IF OVERVOLTAGE OF gt 22VDC OCCURS AT EITHER THE 20 OR 20VDC OUTPUT THE POWER SUPPLY WILL TURN OFF APPROXIMATELY 1 5VDC 7 C OUTPUT TO CLEAR THE CONDITION TURN C2 AN 5 POWER OFF AND SET A17R7 AND 17616 4600 5 MIDRANGE APPLY POWER AND ADJUST FOR 20VDC m q a 9 8V MU U 0 8V h Ul E 49 0V E 1820 0196 4 a i R22 13V 7 5 047 8407A Power Supply and Rectifier Assy Ser Pre 1144A Service P LY ASSEMBLY 08407 60013 tsun a a rr mar rr wr rrr er ree V CR2 5 CR4 03 y 8417 ERLOAD IMITER 32 5V 22 la Q5 o R19 28 1V 1854 0039 20 7v 720 00V 7 s PIO MEM 13 18 P Q XA17 al P i RES 0 39 PO PIO P1 Ql 2N3055 REGULATED DE SERIES p d REGULATOR 5 R10 0 XA17 d R11 Ca oe te eae Oe C T iK 11 5 0 12 4V C A M TER T 1 3V REFERENCE DESIGNATIONS WITHIN OUTLINED oom ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g RI OF ASSEMBLY 1 15 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN 20 00V C
42. 0342 1 0V 1854 0332 1854 0332 i s 2 R16 R20 K 1K C8 C13 C4 i 0 01 0 0 d R15 1 R19 0 01 T IK 7 08407 60050 INDITIONS MS AND 18 2V C24 i C18 1 0 1 L5 0 47uH REFERENCE DESIGNATIC ASSEMBLIES ARE ABBRI CLUDES ASSEMBLY NU IS AIRI DESIGNATIO COMPLETE AS SHOWN REFERENCE DESIGNATIONS Al6 ASSY A16A1 ASSY 1 5 11 3 20V 150 MHz HIGH N PASSFILTER gt LIMITING AMPLIFIER R12 20 C10 R13 ii 0 1 R17 90 562 6 4 272 6 7V 12 16 01 R14 T 0 01 0 05 uH 0 05 uH 6 4V 6 V Cll 9 4V CM 0 5V 0345 1 0V 1854 0332 1854 0332 R16 R20 C8 C13 0 01 0 01 C17 R15 1 R19 oaf 18 2V R21 20 L5 0 47uH C15 0 1 20V pe ee ee ee ee REFERENCE DESIGNATIONS WITHIN QUTLINED m ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY DESIGNATIONS OF OTHER COMPONENTS ARE REFERENCE DESIGNATIONS A16 ASSY 16 1 ASSY 1 5 13 15 AIRI COMPLETE AS SHOWN Service 200 310 MHz VTO SIGNAL A16 Figure 7 9 VTO Amplifier A16 Schematic Diagram 1 9 Service Model 8407A SERVICE SHEET 2 A15 LO Mixer 200 MHz LOW PASS FILTER A low pass filter prevents harmonics of the phase locked oscillator from reaching the mixer This keeps the mixing
43. 1 2V R13 R15 R18 3830 10K 3830 R37 19 6K L3 C24 20V 1 mH T 6 8 FULL WAVE RECTIFIER Masi eave AND HOLD DC NOTE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN Service lt nnr R MM 0 RH nIrIrIAI m Y sXW rM y o EQUENCY 4 OUBLER R48 2150 REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY 1 IS AIR DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN REFERENCE DESIGNATIONS 10 ASSY 0 12V 0 04V P P i 0 16V 1854 0071 167mV I 0 TO x 175 mVDC 2 CR14 d 4 058 1855 0050 2 REF CHANNEL n i METER wl AMPL 4 _ 13 12 R47 R49 13 3K 4640 10 Figure 7 23 Feedbach Amplifier 10 Schematic Diagram 7 23 Service Model 8407A SERVICE SHEET 9 A4 Test Channel Converter LOCAL OSCILLATOR AMPLIFIER Q11 is a grounded base configuration RF amplifier followed by emitter follower Q10 L1 adjusts swept frequency phase tracking between the test and reference channel converters The output of Q10 is amplified by complementary amplifiers Q8 and Q9 RF AMPLIFIER Q1 forms
44. 300VDCW 0160 2199 13 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5C11B75 CML Al3C8 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3 2 A13C9 0160 0174 CER 0 47 UF 80 20 25VDCW 5C11B7S lt CML 13 10 0160 2250 C FXD CER 5 1 500VDCW 301 000 COHO 519E 1 1 9160 2265 C FXD CER 22 PF 5 500VDCN 301 NPO 22PF 13 12 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5 11875 13 13 9180 0291 ELECT 1 0 UF 10 35VDCW 1500105 9035 2 0 5 13214 0160 3060 C FXD 0 1 UF 20 25VDCW 3C42A CML 13 15 0180 0291 C FXD ELECT 1 0 UF 10 35V0CW 150D105X9035A2 DYS AL3C16 0150 0163 MY 0 033 UF 10 200VDCW 192P33392 PTS A13C17 0160 0162 C FXD MY 0 022 UF 10 200VDCW 192P22392 PTS A13C18 0160 0166 MY 0 068 UF 10 200VDCNM 192 68392 5 13 19 0160 0302 CsFXD 0 018 UF 10 200VDCW 192P18392 PTS 13220 0160 0165 C FXD 0 056 UF 10 200VDCW 192 56392 5 13 21 3180 0291 C FXD ELECT 1 0 UF 10 35VDCN 150D105X9035A2 DYS AL3C22 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW S5CLIBTS CML 13 23 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5011875 6 13624 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5 11875 A13C25 0160 0174 CER 0 47 UF 80 20 25VDCW 5C1187S CML 13 26 0160 0174 C FXD
45. 40 MHz 1 24 DISPLAY UNITS 1 25 All plug in display units designed for use with the Model 8407A are completely interchange able These units are powered by the Model 8407A with all necessary interconnections made automati cally when the unit is properly installed General Information 1 26 Model 8412A Phase Magnitude Display 1 27 The Model 8412A is used in either trans mission or reflection measurements to display phase and magnitude characteristics of a unit under test Two traces one magnitude and the other phase are shown simultaneously on a built in cath ode ray tube Magnitude is calibrated in dB and phase in degrees The 8412A also supplies simul taneous external output voltages proportional to the magnitude and phase for use with a graphic recorder Marker signals spot intensify the trace for frequency reference and blanking signals eliminate the trace between sweep intervals 1 28 Model 8413A Phase Gain Indicator 1 29 The Model 8413A is intended for fixed and swept frequency transmission or reflection meas urements providing phase and amplitude informa tion in two forms meter indication and analog voltage The meter indicates phase or amplitude according to the function selected while the ana log voltages are continuously produced by both phase and amplitude circuits The meter has center zero scales with phase ranges of 6 18 603 and 180 and amplitude ranges of 3 10 and 30 dB Calibra
46. 474M 150D105X9035A2 DYS 8131 050 651 105M 8131 050 651 105M 301 000 COGO 120J 1500105 9035 2 0 5 RDM15F221J3C 15001 05 9035 2 0 5 1500105X9035A2 DYS 8131 050 651 105 0160 2219 150D225X902042 DYS OBD 0140 0184 150D105X9035A2 DYS 150D105X9035A2 DYS 5CIIB7S CML 150D105X9035A2 DYS 5C1187S CML 15001 05X9035A2 DYS 0140 0210 5C1187S CML 150D105X9035A2 0YS SCIlBTS CML 2425 000 X5V 502P 2425 000 X5V 502P 2425 000 X5V 502P 1901 0450 1901 0044 1250 1205 1250 1205 1250 1205 1250 1205 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Designation 08407 60029 COIL ASSY LO RF AM 08407 60029 08407 60029 COIL ASSY LO RF AM 08407 60029 9100 2209 INDUCTOR 37 8 UH 12 9100 2209 9140 0180 COIL CHOKE 2 70 UH 10 9140 0180 1854 0431 TSTR SI NPN REPLACEABLE BY RCA 2 5179 1854 0431 1854 0431 TSTR SI NPN REPLACEABLE BY RCA 2N5179 1854 0431 1854 0431 TSTR SI REPLACEABLE BY RCA 2 5179 1854 0431 1854 0071 TSTR SI NPN SELECTEO FROM 2N3704 1854 0071 1854 0071 TSTR SI NPNE SELECTED FROM 2N3704 1854 0071 1854 0071 TSTR SI NPN SELECTED FROM 2N37041 1854 0071 1853 0020 TSTR SI PNP SELECTEO FROM 2 3702 1853 0020 1853 0034 TSTR SI PNPCSELECTED FROM 2N3251 1853 0034 1854 0471 TSTR SI NPN 1854 0471 1854 0471 TSTR SI NPN 1854 0471 1854 0471 TSTR SI NPN 1854 0471 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 0757 0419 R FXD MET FLM 681 OHM 1 1 8 0157 0419 0598 3445 MET
47. 5 i M gite 014 xcu il SHA 113 15 T i ES id 91 13 T d I lt A a AG 0 CDM E gt r 1031N02 i 042 894 30444318 8 Z13842 md ii 25 due E Ki 401Iv111250 dadila BEC 4 3207 38 VH4 i d TET NN jus T AGER i I I 14 4 5 AA AAA i 39 6 A AA RE 519 i ACE 6 192 192 A6 i 224 bo e perc Et nae 10 m a 1200 1581 1400 022 2 ABI 60 TEM 0200 ESET 0200 6681 O O 182 823 Vv AG Q0 VAM 7 YA 2 Ord 1100 pest 10 P UD H8 609 ab E eco ape rl y y H S MER SR c go 0482 i 2 42 0200 Essi 9 8 i LAQ b 10400 T Ts A2 JOVI 10A 1531 pL bby 13NNYH2 AR L027 ATL 133 ZH39822 at MAS i I i 151 4 o AQ aJll 1dwY 28 3 eh s law REL 79 13 E MERI B 7 60009 10580 80137111250 43 201 35 4 PIV 1 6 Model 8407A Appendix 1 Al Figure 7 28 Parts Location for Programmable IF Attenuator A7 Change F Serial No 972 00385 and Below Model 8407A Appendix LL pu g800 Z 6 101495 A Bunuo L V L
48. 52 9D 80 606 Ded I iu A6 0 170 QU A l cb AU Gy 3450 C PL X asl i 0901 s gt 2 s d d Aug jo MUU i d 410 2 E 6 0 681 ol i Ag Gp pe cf cO Di srg 2 924 lb ol l It i eL 22 eT i by 6 E w L is EU AS 42 1 4 4 m 8 T 0797 001 Scd 518 82 11 10 019 2 gt gt 9 p t i MILA 1401108 X Jj X dilliSSvd 7 F A AU gt 2 02 2d 0o o 80103130 WWI fX CU 33131 div 06 35 8 7HY 062 102812 031V3531N 9v 0 4 6009 1090 103 NO2 14A31211VW010V ETY 1 21 Appendix Model 8407A A14 Figure 7 14 Parts Location for Phase Locked Oscillator A14 Change L Serial No 924 00130 and Below 1 22 Model 8407A Appendix I On Figure 7 15 Change I included with this appendix Delete A14C31 C32 and C33 put in their place 14 3 and CR5 all 15 pF voltages variable capacitors with cathodes wired to ground Add a yellow wire connecting XA13 pin 9 to XA14 pin 16 CHANGE M Page 6 10 Table 6 1 Delete A10CR 14 Page 6 17 Table 6 1 Delete A17C3 and A17
49. 55 590 65 38 RECOMMENDED REPLACEMENT BEAD SHIELDING 56 590 65 3B RECOMMENDED REPLACEMENT MIXER DOUBLE BALANCED 105148 1 RECTIFIER BOARD ASSY 08407 60026 1 REBUILT 08407 60026 REQUIRES EXCHANGE 08407 60117 3 GsFXD MY 0 1 UF 10 200VOCM 192P10492 PTS RECOMMENDED REPLACEMENT C FXD MY 0 1 UF 10 200VDCW 192P10492 PTS RECOMMENDED REPLACEMENT 4 DIODE SILICON 100 PIV 3A 1N4998 DIODE SILICON 100 PIV 3A 1N4998 See introduction to this section for ordering information Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Mfr Code Reference Designation HP Part Number Oty Description Mfr Part Number A5CR3 1901 0200 DIODE SILICON 100 PIV 3A 1N4998 ASCR4 1901 0200 DIGDE SILICON 100 PIV 3A 1N4998 A6 08407 60014 FRONT PANEL SWITCH ASSY 08407 60014 A5C1 0160 3036 C FXD CER 5000 PF 80 20 200VO0CW 0160 3036 A6C2 0160 3036 C FXD CER 5000 PF 480 205 200VDCW 0160 3036 A5J1 1251 1604 CONNECTOR PC EOGE 1 ROW 22 CONTACT 252 22 30 310 A6J2 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 043 4610 A6 43 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 704 3 4610 A6J6 1250 0828 CONNECTOR RF 50 SCREW ON TYPE 50 043 4610 ASRI 0757 0442 R FXD MET FLM 10 0K OHM 1X 1 8W 0757 0442 A6XAL THRU 6 6 NOT ASSIGNED 1251 2283 CONNECTOR 6 TUNING CONTACTS 190 221 00 6
50. 6012 TRANSFORMER RF CODEZ BLUE 08553 6012 15 0840 7 6000 1 VTO AMPLIFIER ASSY 08407 60001 A15 08407 60112 REBUILT 08407 60001 REQUIRES EXCHANGE 08407 60112 1551 0150 0093 C FXD CER 0 01 UF 80 20 100VDCW 801 K800011 15 2 0150 0093 CER 0 01 UF 80 20 100VDCW 801 K800011 Al6C3 0150 009 3 C FXD CER 0 01 UF 80 20 100VDCW 801 K800011 504 0150 0093 C FXD CER 0 01 UF 80 20 100VDCW 801 K800011 Al5C5 0150 0093 C FXD CER 0 01 UF 80 20 LOOVOCW 801 K800011 Al6C6 0160 2250 C FXD CER 5 1 PF SOOVDCW 301 000 COHO0 519E 1507 0150 0093 C FXD CER 0 01 80 20 LOOVDCH 801 800011 1528 0150 0093 CER 0 01 UF 80 20 100VDCW 801 K800011 A16C9 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 15210 0160 3060 C FXD CER 0 1 UF 20 25 3C42A CML Al6C11 0160 2261 C FXD CER 15 PF 5 500VDCW 301 5 PF ALSC12 0150 0093 C FXD CER 0 01 UF 80 204 LOOVDCW 801 K800011 16 13 0150 0093 C FXD 0 01 80 20 100VDCW 801 800011 A1SC14 0160 2261 CER 15 PF 5 SOOVDCW 301 15 1215 0160 3060 C FXD CER 0 1 UF 20 25 3C42A CML 15 16 0150 0093 CER 0 01 UF 80 20 100VO0CW 801 800011 16 17 0150 0093 C FXD CER 0 01 UF 480 208 100 801 800011 15 18 0180 3060 CER 0 1 UF 20 25VDCW 3C42A CML A15C19 0150 0093 CzFXD CER 0 01 UF 80 20 100VDCNW 801 K800011 Al6C20 0150 0093 CER 0 01 UF 80 20 LOOVDCW 801 800011 16 21 0150 00
51. 80 20 LOOOVDCW 0678102 1027525 14 16 0150 0050 C FXD CER 1000 PF 80 20 LOOOVDCW 0678102 1027526 14 17 0160 2255 8 2 PF 500VDCN 301 000 0 829 14 18 0150 0115 CER 27 PF 10 500VDCW 301 000 U2J0 270K AL4Ci9 0160 3060 CER 0 1 UF 20 25VDCM 3C42A CML 4520 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C4 amp 2A CML 18221 0160 3060 C FXD 0 1 UF 203 25VDCW 3C42A CML 1 22 0160 2264 C FXD CER 20 PF 5 500VDCW 301 000 0060 200 A14C 23 0150 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML A14C24 0160 2016 C FXD MICA 62 PF 5 500 RDM15E620J5S A14025 0160 0299 C FXD 1800 PF 10 200VDCW 192P18292 PTS 4526 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 150D685X90 358 2 DYS 14227 9180 0116 ELECT 6 8 UF 10 35VDCW 1500685 903582 5 1 28 0180 2141 C FXD ELECT 3 3 UF 10 50VDCW 1500335 905082 0 5 14 29 0180 1745 C FXD ELECT 1 5 UF 10 20VDCW 0180 1745 A14C30 0160 2016 C FXO MICA 62 PF 5 500VD0Cw RDM15F620J55 Al4CRI 0122 0263 C VOLTAGE VAR 47 PF 10 60WV 1 5148 AL4CR2 1902 0025 DIODE sBREAKDOWN 10 0V 5 400 MW 1902 0025 Al4CR3 0122 0201 C VOLTAGE VAR 15 PF 10 30wWV SMV315 201 AL4GCR4 0122 0201 C VOLTAGE VAR 15 PF LOZ 30WV SMV315 201 Al4CR5 0122 0201 C VOLT
52. 8131 050 651 47 0160 226 CER 20 PF 5 SOOVDCH 301 000 060 200 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105 9035 2 0 5 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105 9035 2 0 5 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 0160 3060 CER 0 1 UF 20 25V0CW 3C42A CML 0160 3491 C FXD CER 0 47 UF 20 50VDCW 8131 050 651 474M 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 150D105X9035A2 DYS 0150 3490 C FXD CER 1 0 UF 20 50VDCW 8131 050 651 105M 0160 3490 C FXD CER 1 0 UF 20 50VDCW 8131 050 651 105 0150 2259 C FXD CER 12 PF 5 500VDCW 301 000 060 120 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS 0180 0291 C FXD ELECT 1 0 UF 10 35VOCW 150D105X9035A2 DYS 0160 3490 C FXD CER 1 0 UF 20 50VDCW 8131 050 651 105 9180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS 0160 0134 C FXO MICA 220 5 300VDCM RDM15F221J3C 0160 2437 CER 5000 PF 80 20 200VDCW 2 25 000 5 502 0160 2437 CER 5000 80 202 200VDCW 2 425 000 5 502 0160 2219 C FXD MICA 1100 5 0160 2219 0180 0197 C FXD ELECT 2 2 UF 10 20VDCW 150D225X9020A2 0YS 0160 3076 CER 470 PF 5 200VDCW 080 0140 0184 MICA 8200 PF 1 100VDCW 0140 01 84 0180 0291 C FXO ELECT 1 0 10 35VDCW 150D105X9035A2 DYS 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 15
53. 8407A AGC amplifier driving the UNCAL REDUCE INPUT RATIO light A2A1 PHASE VERNIER The 278 kHz reference channel IF signal passes through AZAIQ1 A2A1Q3 with no amplifica tion The prime purpose of the circuit is to shift phase with the PHASE VERNIER control R1 A2A2 AMPLITUDE VERNIER The 278 kHz test channel IF channel is attenuated with the AMPL VERNIER control R2 by changing the effective by pass to ground of A2A2CA The amount of by pass to ground exhibited by A2A2CIl is controlled by the DISPLAY REFER ENCE 1 dB step switch which changes the resist ance between by pass capacitor C1 and ground Figure 7 30 Parts Location for Front Panel Assembly Al and A2 1 of 2 Model 8407A A2 Figure 7 30 Parts Location for Front Panel Assembly and A2 2 of 2 Al FRONT PANEL SWITCH ASSY 08407 60014 2 FRONT PANEL ASSY 08407 60022 SS NOTE 1 A2Al PHASE VERNIER A R3 T lt 52 VERNIER pe 8195 DISPLAY REFERENCE dB UNITS a R2 2 4 pF 3862 0 AM Es 278 KHz E d REFERENCE sip 244 51 CHANNEL gt Dor TG SIGNAL R4 8 v13 8 2 pF 1710 2 C4 R5 12 pF 1285 C5 R6 16 pF 1005 C6 R7 20 pF 807 3 C7 R8 A ENS 24 pF 661 4 B AMPL VERNIER o 30 pF 549 9 1 2CW x DISPLAY REFERENCE dB TENS TEST VERN 253 CHANNEL 2 5 T r t SIGNAL
54. 948 00175 and below Mfr Reference HP Part Number Oty Description f Mfr Part Number Designation Code 02497 6000 3 1 ALC AMPLIFIER ASSY 23486 08407 60003 RECOMMENDED PEPLACEMENT IS 08407 50002 08467 60102 REBUILT AT THE SAME TIME A14 MUST BE REPLACED WITH 03407 00123 OP 084507 60107 REBUTLT A13 03407 60102 1 REBUILT EXCHANGE ASSY 28480 98407 60102 1321 0180 0291 5 C FXO ELECT 1 0 UF 10 35vO0Cw 562R9 150D105X90235A2 DYS 1322 0160 0174 5 C FXD CER 0 47 UF 80 20 25VDCW 56289 5C1187S CML Al3c3 0160 0174 C FXD CER O 47 UF 480 20 25VDCM 56289 5011875 13 0180 0291 C FXD ELECT 1 0 YF 105 35VDCw 56289 150D105X9035A2 DYS 1305 9160 3950 16 C FXD CER 0 1 UF 207 25VDCWMW 56289 3C42A CML 41306 0150 3050 C FXD CER 0 1 UF 20 25V0CW 56239 3 42 AL3C7 3160 0174 C FXD CER 0 87 UF 80 20 25VU0CW 56289 5 11 75 1 1328 0152 0157 1 C FXD MY 9 0947 10 200VDCW 56289 192 47292 5 Al3C9 0150 0174 C FXD CER 0 47 UF 80 20 25VDCW 56289 5C1187S CMt 13212 90150 3060 C FXD CER 0 1 UF 20 25VDCW 56289 3C42A CML 1311 0160 2164 1 C FXD MY 0 039 UF 10 200VDCw 56289 192P39332 PTS 413012 2160 0155 1 C FXO MY 0 0039 UF 10 200VDCN 56289 1
55. A cont d Page 7 15 Figure 7 15 Change A14C26 to 180 pF Delete A14C39 Delete A14L12 and jumper across connections Change A14R21 to 10K ohm Delete A14R55 and jumper across connections Page 7 15 Figure 7 14 Replace Figure 7 14 in Section VII of Manual with Figure 7 14 Change A in this Appendix CHANGE B Page 6 2 Table 6 1 Change A2R3 to HP Part No 0698 3132 R FXD 261 OHM 19 1 8W Recommended replacement is 0698 3443 287 OHM Page 6 3 Table 6 1 Change A3C28 to HP Part No 0160 2208 C FXD 330 PF 300V Recommended replacement is 0140 0210 270 PF Page 7 17 Figure 7 17 Change A3C28 to 330 pF Page 7 31 Figure 7 31 Change A2R3 to 261 OHMS CHANGE C Page 6 8 Table 6 1 Change A5C1 and A5C2 to HP Part No 0160 2930 C FXD CER 0 01 UF 80 20 100 VDCW Recommended replace ment is 0160 0168 0 1 UF Page 6 11 Table 6 1 Add under A10UI1 Part No 1200 0195 SOCKET INTEGRATED CIRCUIT It is recommended that this socket be re moved for better reliability Page 7 35 Figure 7 35 Change A5C1 and C2 to 0 01 UF CHANGE D Page 6 5 Table 6 1 Change A3Z1 Z2 and Z3 to HP Part No 9170 0016 Recommended replacement is 9170 0847 Page 6 6 Table 6 1 Change 471 Z2 Z3 Z4 to HP Part No 9170 0016 Recommended replacement is 9170 0847 Page 6 13 Table 6 1 Change 1321 Z2 Z3 and Z4 to HP Part No 9170 0016 Recommended replacement is 9170 0847 Page 6 15 Table 6 1 Change 1471 to H
56. C FXD ELECT 4600 UF 75 10 50VDCM C FXD MY 0 1 UF 10 200V0CW 3160 0209 0180 2274 0180 2274 0160 0168 5160 0209 360462605 0 02 A DQ8 3604626G050A02A 0QB 192P10492 PTS 1902 1226 DIODE BREAKDOWN 5 1V 5 1N3996A 1200 0080 INSULATOR TRANSISTOR MTG 294834 1902 1234 DIODE BREAKOOWN 7 5V 5 1N4000A 1200 0080 INSULATOR TRANSISTOR MTG 294834 2140 0244 LAMP GLOW MINIATURE 95V LAMP INCANDESCENT 5 0 0 060A LAMPHOLDER FOR 1 SERIES LENS LAMPHOLDER AMBER RECOMMENDED REPLACEMENT 1 250V 230V OPERATIONDRECOMMENDED REPLACEMENT CM 685 102SR 102 A LENS 2140 0092 1450 0153 1450 0371 2110 0001 312001 2110 0002 FUSE CARTRIDGE 2 AMP 3 AG 115V GPERATIONIRECOMMENDED REPLACEMENT FUSEHOLDER EXTRACTOR POST TYPE FILTER LINE 312 002 1400 0084 9100 2877 342014 F1262 1250 0102 CONNECTOR BNC 1250 0102 5060 0467 CONNECTOR MALE PROBE 5060 0467 1250 0102 CONNECTOR BNC 1250 0102 1250 0102 CONNECTOR BNC 1250 0102 5060 0467 CONNECTOR MALE PROBE 5060 0457 1250 0102 CONNECTOR BNC 1250 0102 1250 0870 BODY RF CONNECTOR REAR MTG 28JS112 1 1250 0870 BOOY RF CONNECTOR REAR MTG 2835112 1 1250 0870 BODY RF CONNECTOR REAR MTG 28JS112 1 PART OF 08410 2029 CONNECTOR FEMALE MOD 08410 2029 1120 1525 METER 1120
57. CABLE ASSY BNC SHIELDED 3 EA TRIM UPPER FRAME MINT GRAY TRIM UPPER FRAMECLIGHT GRAY TRIMS LOWER FRAME MINT GRAY TRIM LOWER FRAME LIGHT GRAY DECK SLIDE STANDARD DECK SLIDE OPT X95 FRAME UPPER STANDARD FRAME UPPER OPT IONS OIVIDER CENTER STANDARD DIVIDERz CENTER OPT IONS FRAME LOWER STANDARD FRAME LOWER LIGHT GRAY Table 6 3 Code List of Manufacturers ADDRESS PICKENS S C MILWAUKEE WIS COMPONENTS DIV DALLAS EX SAUGERTTES N Y BROADVIFW ILL SOMERVILLE Nede WAKEFIELD MASS PHOENIX ARIZ CHICAGO ILL SUN VALLEY CALIF DALLAS TEX DIV FEDERAL PACIFIC ELECT CD NEWARK BRIDGEPORT CONN PALO ALTO CALIF HAWKSBURY ONTARIO N ADAMS MASS CHICAGD ILL MILWAUKEE WISC CAICAGO FLL ELK GROVE VILLAGE WILLIMANTIC CONN ERTE PA DES PLAINES TLL WASHINGTON D C DU BOIS PA CHICAGO ILL ANAHEIM CALIF CHICAGO ILL ATTLEBORD MASS SEMICONDUCTIR DIV WOBURN MASS ROLLING MFADOWS ILL MAMARONECK N Y ES AURORA N Y See introduction to this section for ordering intormation MOUNTAIN VIEW CALIF Model 8407A Mfr Part Number 614 093 15 0370 0103 OBD OBD 08407 00052 08407 00053 08407 20044 08407 20046 08407 20048 08407 20049 08407 20055 08407 60094 5060 0050 03950 4001 08407 00021 11593A 08 amp 10 60067 10503A 5020 7977 5020 3275 5020 7978 5020 3276 08407 00063 08407 00011 08407 20126 08407 20041 08407 4
58. CER 0 47 UF 80 20 25VDCW 5C1187S CML Al3C27 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5C11875S CML A1 3028 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5C11875 CML 13 29 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML A13C30 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML A13C31 0160 3060 C FXD CER 0 1 UF 20 25VDCN 3C42A CML A13C 32 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 0YS 13 33 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CHML A13034 0180 0291 C FXO ELECT 1 0 UF 10 35VDCW 150D105X9035A2 DYS 13 35 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS A13L 1 9100 2255 COIL CHOKE 0 47 UH 10 9100 2255 A13L2 3100 2250 COIL CHOKE 0 18 UH 10 9100 2250 1313 AL3L4 9100 2254 9140 0237 COIL CHOKE 39 UH 10 COIL FXD 200 UH 5 RECOMMENDED REPLACEMENT COYL CHOKE 430 UH 5 RECOMMENDED REPLACEMENT 9100 2254 9140 0237 A13L5 9100 1646 19 1331 26 413165 9140 0158 COIL FXD RF 1 UH 10 1025 20 A13L7 9140 0158 COIL FXD RF 1 UH 10 1025 20 A13L8 9140 0158 COIL FXD RF 1 UH 10 1025 20 1341 1854 0345 TSTR SI NPN 2N51 79 1392 1854 0345 TSTR SI 2 5179 See introduction to this section for ordering information 6 12 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts ee Mfr Reference Designation Mfr
59. FXD MET FLM OHM 14 1 8W 0757 0280 AL SKS 0683 1225 R FXO COMP 1200 OHM 5 1 4W 1225 1545 0757 0394 MET FLM 51 1 OHM 1 1 8W 0757 0394 Al546 0757 0316 MET FLM 42 2 OHM 1 1 8W I 0757 0316 See introduction to this section for ordering information 6 16 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Reference Xm Mfr Mfr Part Number 1547 0757 0280 MET FLM 1K OHM 1 1 89 0757 0280 15R8 0757 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 41559 0683 1225 R FXD COMP 1200 OHM 53 l 4W CB 1225 16519 0757 0280 R FXD MET FLM OHM 17 1 88 0757 0280 416411 0757 0280 R FXD MET FLM 1K OHM 1 1 BW 0757 0280 16 12 0683 2005 R FXD COMP 20 OHM 5 1 4W CB 2005 AL5R13 0683 9115 R FXD COMP 910 OHM 5 1 4W CB 9115 A15K14 0757 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 415415 0682 1325 R FXD COMP 1300 OHM 5 1 4W CB 1325 Al6816 0757 0280 R FXDO FLM OHM 1 1 8W 0757 0280 15517 0757 0815 R FXD FLM 562 OHM 1 1 24 0757 0815 15 18 0757 0280 FLM OHM 1 178 0757 0280 15319 0757 0818 FLM 825 OHM 14 1 24 0757 0818 16 29 0757 0280 R FXD MET FLM 1K CHM 1 1 8W 0757 0280 15 21 0683 2005 R FXD 20 OHM 5 1 4W C8 2005 A15222 0757 0815 R FXD
60. MET FLM 316 OHM 1 1 8W 284 80 0698 3444 0757 0428 R FXO MET FLM 1 62K CHM 1 1 8 28480 0757 0428 0698 7398 R FXD FLM 6 124K OHM 0 14 1 8wW 28480 0698 7398 0757 0394 MET FLM 51 1 OHM 1 1 8W 28480 0757 0394 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 284 80 0698 3438 06 98 3438 R FXD MET FLM 147 OHM 1 1 8W 28480 0698 3438 0698 6996 R FXD FLM 200 DHM 0 12 1 8W 28480 0698 6996 0698 3155 R FXD FLM 4 64K OHM 1 1 8W 28480 0698 3155 0757 0438 R FXD MET FLM 5 11K OHM LZ 1 8MW 28480 0757 0438 0698 3155 MET FLM 4 64K OHM 1 1 8 28480 0698 3155 0757 0394 R FXD MET FLM 51 1 OHM IZ 1 8W 284 80 0757 0394 08407 60005 TEST CHANNEL AGC AMPLIFIER ASSY 28480 08407 60005 ORDER 08407 60036 A8 amp All MATCHED PAIR CWITHOUT EXCHANGE 08407 60104 REBUILT 08407 60004 08407 60005 A8 11 28480 08407 60104 MATCHED PAIR REQUIRES EXCHANGE 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 56289 150D685X9035B2 DYS 0180 0116 C FXO ELECT 6 8 UF 10 35VDCW 56289 1500685 903582 0 5 0180 0116 ELECT 6 8 UF 10 35VDCW 56289 1500685 903582 0 5 0180 0116 C FXO ELECT 5 8 10 35VDCMW 56289 1500685 9035 2 0 5 0160 2930 CER 0 01 UF 80 20 100VDCW 91418 TA 0180 0291 C FXD ELECT 1 0 UF 10 35VOCW 56289 15600105X9035A 2 DYS 0180 0291 ELECT 1 0 UF 10 35VDCW 56289 150D105X9035A2 DYS See introduction to this section for ordering information 6 8 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts
61. Modification kit for field installation of this option is Part No 08407 60145 MANUAL OPTION CHANGES TO INCORPORATE Page 1 2 Table 1 1 Change TEST INPUT and REFERENCE IN PUT impedance to 75 ohms Page 1 3 Paragraph 1 17 Change 1 entry to 11652A Option 008 Reflection Transmission Kit Delete 2 116544 Passive Probe Kit Page 1 3 Paragraph 1 18 Delete entire paragraph Page 1 3 Paragraph 1 19 Add Option 008 after 11652 and after 8721A Page 1 3 Paragraph 1 20 thru 1 23 Delete paragraphs 1 20 thru 1 23 Page 3 5 Figure 3 3 Add Option 008 after all references to 8407A and 11652 Change 11652 60009 to 11652 60019 Page 3 6 Figure 3 4 Add Option 008 after all references to 8407A 11652A and 8721A Change 11652 60009 to 11652 60019 Page 5 3 Table 5 2 Add Option 008 after 8721A and 11652A in Transmission Reflection Accessory Kit Change 11652 60009 to 11652 60019 Pages 5 5 5 6 5 7 5 9 5 12 and 5 15 Add Option 008 to references to 8721A and 116524 Change 11652 60009 to 11652 60019 Page 6 20 Table 6 1 Add to the miscellaneous list the following 11658 60001 4 ea matching resistor assy 1120 2821 Identification Plate 08407 20124 4 each washers 2950 0035 4 each hexagon nuts 2190 0068 4 each washers Page 7 17 Figure 7 17 Add a 50 to 75 ohm adapter at the end of Reference input connectors 41 and J3 consist ing of a 25 ohm r
62. Notes about specific compo nents circuits or conditions are given on the dia gram to which they apply 7 5 As an aid to finding components and assem blies in the set of diagrams each diagram has a box labelled Reference Designations that contains all the reference designations appearing on the dia gram 1 6 An asterisk indicates a factory selected part The component value shown is the typical or most commonly selected value 7 7 Component procurement information and specific component descriptions are included in Section VI Refer to page 6 1 for information on how to order parts Assembly Designation Name Part No M d 08708 6007 Socket Designation Number indicates For A2 Assembly Pin of Socket XA2 n l Plug in Value selected Socket for best Operation Connector Value shown is Information Average or most commonly selected REFERENCE DESIGNATIONS value NO PREFIX Al ASSY CRI 2 Reference J3 A2 Assy z Cl ndex 01 13 not Mounted on TX A2 Figure 7 1 General Information on Schematic Diagrams 7 1 Service 7 2 Model 8407A SCHEMATIC DIAGRAM NOTES Refer to MIL Std 15B for Symbols Not Shown Resistance is in ohms and capacitance 15 in microfarads unless otherwise noted P O part of Asterisk denotes a factory selected value Value shown is typical Capacitors may be omitted or resistors jumpered screwdriver adjustment Panel control
63. OHM 2 1 8 0698 7250 Al 411 0698 7243 4 R EXD FLM 1 95K OHM 2X 1 8W 0698 7243 AL4R12 0698 7212 1 R FXD 100 OHM 2 1 8W 0698 7212 A14413 0698 7253 2 R FXD FLM 5 11K OHM 2 1 8W 0698 7253 Ale4RlI4 0698 7 236 R FXD FLM 1K OHM 2 1 8W 0698 7236 Al4815 0698 7236 R FXD FLM 1K OHM 2 1 8 0698 7236 Al4RIG 0698 7233 1 R FXD 750 OHM 2 1 88 0698 7233 414416 FACTORY SELECTED PART 14 517 0698 7267 5 R FXD FLM 19 6K OHM 2 1 8 0698 7267 Al4R1L8 0698 7 267 R FXD MET FLM 19 6K OHM 2 1 8W 0698 7267 14519 0598 7267 R FXD MET FLM 19 6K OHM 2 1 8 0698 7267 1 0757 0159 3 R FXD MET FLM 1000 OHM 1 1 2wW 0751 0159 16 21 0698 7267 R FXD FLM 19 6K OHM 2 1 8W 0698 7267 Al4R22 0698 7222 2 R FXD FLM 261 OHM 2 1 8W 0698 7222 1 23 0698 7222 R FXD FLM 261 OHM 2 1 8W 0698 7222 Al4R2 0698 7243 R FXO FLM 1 96K OHM 2 1 8W 0698 7243 418425 0698 7243 R FXD FLM 1 96K OHM 2 1 88 0698 7243 AL4R26 0698 7 243 2 FLM 1 96K OHM 2 1 8 0698 7243 AL4R27 0698 7260 4 R FXD FLM LOK OHM 2 1 8wW 0698 7260 16 28 0698 7 260 FLM LOK OHM 2 1 8W 0698 7260 414829 0698 7267 R FXD FLM 19 6K DHM 2 1 8 0698 7267 Al4430 0698 7 264 1 R FXD 14 7K OHM 2 1 84 0698 7264 AL4R31 0698 7253 R FXD MET FLM 5 11K DHM 2 1 8w 0698 7253 A14R 32 0698 7 223 2 R FXD FLM 287 OHM 2 1 8 0698 7223 14533 0751 0159 R FXD MET FLM 1000 OHM 1 1 2w 0757 0159 Al4R34 0757 0159 R FXD FLM 1000 OHM 1 1 2 0757 015
64. PLUG IN DISPLAY 5 rx TEST CHANNEL AMPLITUDE du EN J Z 2 TPE IF TEST OUTPUT 1 X J11 24 REFERENCE TO PLUG IN CHANNEL DISPLAY IF REF OUTPUT N FROM SWEEPER POWER 14 l2 yo EN C C lt 10 5 9 Z E C Mau 8 eee C 187 iv XA18B n UNBLANKING TO NS UE PLUG IN DISPLAY N C VW REFERENCE DESIGNATIONS Figure 7 33 Master Board A6 Schematic Diagram 7 33 Service Model 8407A SERVICE SHEET 14 5 Rectifier Assembly and A17 Power Supply 20V POWER SUPPLY An overload limiter senses current through R1 When an overload occurs Q3 and Q4 turn on causing Q5 and series regulator Q1 to turn off The regulator feedback loop starting at A17TP3 is through R6 R7 U2 and Q5 to the base of Q1 A change in the 20V output due to a change in load produces a change through the regulator loop which changes the effective resistance of series regulator Q1 and brings the output voltage back to 20 Vdc Overvoltage protection is provided by A17CR4 If the output voltage rises to above 21 5 Vdc CR4 conducts and causes the overload limiter Q3 to actuate Overvoltage may inadvertently occur during adjustment of R7 and the supply will go to near zero volt output To clear overload set R 7 to mid position turn main power off then on
65. Part Number 1393 1854 0345 TSTR SI NPN 2N5179 A1304 1854 9247 TSTR SI NPN 1854 0247 41325 1854 0280 TSTR SI DUAL 1854 0280 1306 1854 0345 TSTR SI NPN 2 5179 291 1854 0247 TSTR SI NPN 1854 0247 13 8 1853 0034 TSTR SI PNP SELECTED FROM 2N3251 1853 0034 A1339 1854 0471 TSTR SI NPN 1854 0471 AL3R1 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3435 AL3R2 0698 3442 MET FLM 237 OHM 1 1 8 0698 3442 A13 amp 3 0698 3442 MET FLM 237 OHM 1 1 88 0698 3442 384 0757 0416 R FXD FLM 511 OHM 1 1 84 0757 0416 AL3R5 0757 0317 R FXD MET FLM 1 33K OHM 1 1 8W 0757 0317 A13R6 0698 3435 MET FLM 38 3 OHM 1 1 8W 0698 3435 27 0757 0294 R FXD MET FLM 17 8 OHM 1 1 8M 0757 0294 1348 0698 008 R FXD MET FLM 2 15 OHM 1 1 8W 0698 0084 AL3R9 0698 3437 R FXD MET FLM 133 OHM 17 1 84 0698 3437 A13A1J 0757 0394 R FXD MET FLM 51 1 OHM 1 1 8W 0757 0394 A13R11 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8M 0698 0083 A13R12 0698 3430 R FXD MET FLM 21 5 OHM 1 1 8W 0698 3430 13 13 0757 0200 R FXD MET FLM 5 62K OHM 1 1 8M 0757 0200 AL3K14 0757 0279 R FXD FLM 3 16K OHM 1 1 8W 0757 0279 A13R15 0698 3432 R FXO MET FLM 26 1 OHM 1 1 8W 0698 3432 13 16 0698 3442 R FXO M
66. a BNC short connected to the LOAD connector of the bridge the reflection coefficient of the LOAD port is 1 0 and all of the signal is reflected This reference signal is noted at the oscilloscope as a reference The short is then removed the directional bridge connected to one of the 8407A input ports and the reflected signal from the input port is noted The reflection coefficient p may be calculated by dividing the reflected value by the reference value The reflection coefficient is easily converted to VSWR mathematically TEST SETUP SWEEP OSCILLATOR NETWORK ANALYZER 50 OHM TERMINATION Y BNC PLUG NM PLUG COUPLER DUAL TRACE OSCILLOSCOPE 0 120dB STEP i il DIRECTIONAL BRIDGE Mode 8407A Maintenance Table 5 3 Performance Test cont d TEST PROCEDURE cont d EQUIPMENT REQUIRED Sweep Oscillator HP 8601A or Two 50 Ohm Terminations inc with 8407A 8690B 8698B BNC Tee HP Stock No 1250 0781 UG274 B U Directional Bridge HP 8721A Part PE Tectona Par BNC Plug Plug Coupler HP Stock No 1250 of Kit 0216 UG 491 Oscilloscope HP 180A 1801A 1820A 0 120 dB Step Attenuator HP 355D Part of Reflection Transmission Accessory Kit HP 11652A PROCEDURE CAUTION Do not apply greater than 26 dBm RF signal or 50 Vdc to any of the 8407A input connectors or damage to the internal components may result a Turn 8407A on Set sweep oscillator
67. a grounded base amplifier L2 adjusts the swept frequency amplitude tracking between converters A3 and A4 The RF input to Q1 comes either through a 10 dB attenuator from the DIRECT input or through a 50 dB attenuator from the ATTEN input Q2 and Q3 are direct coupled emitter followers to isolate the RF amplifier circuit from balanced mixer A4A1 MIXER Balanced mixer A4A1 mixes the local oscillator signal with the RF input signal to produce a 278 kHz difference signal 26 dB IF AMPLIFIER Q4 Q5 and Q7 form an IF amplifier Q7 provides isolation for the amplifier stages and provides a low impedance output L3 C22 C23 and R46 form a low Q parallel resonate circuit at 278 kHz and effectively provides a bandpass filter for the 278 kHz IF signal OVERLOAD AMPLIFIER Q6 senses the amplitude of the IF signal and turns on when a preselected limit is reached The value of resistor R58 is selected for the correct turn on level The overload amplifier makes a closure to ground when turned on that switches the overload light driver and turns on the UNCAL REDUCE INPUT RATIO light 1 24 Model 8407A Figure 7 24 Parts Location for Test Channel Conuerter 4 A13 A4 TEST CHANNEL CONVERTER 08407 60092 OAL OS AMPLIFIER LOCAL OSCILLATOR SIGNAL 0 dBm NOM ean Cl R7 237 05 L0 P O Q10 UVI 1854 0471 01 a 1854 0471 d 1 0V 9V 0 1 P C7 0 7V R4 R6 R8 619 38 3 681
68. and Q5B turn on and and Q4B turn off This gives maximum IF signal to transformer T2 Conversely when the AGC control signal goes in the negative direction Q5A and Q5B turn off and Q4A and Q4B turn on This gives the minimum IF signal to transformer T2 Instead of the signal flowing through Q5A and Q5B to transformer T2 the IF signal flows through Q4A and Q4B to ground IF AMPLIFIER Q6A and Q6B form a differential amplifier followed by amplifier Q7 A feedback loop is formed between the output of Q7 and the input of Q6A by resistor R20 and capacitor C11 OVERLOAD Q8 is the overload detector When the IF signal amplitude exceeds a pre selected limit Q8 conducts causing the UNCAL REDUCE INPUT RATIO light to come on 7 26 Model 8407A A zu hs CM P GEM EC S 32 E m SEGA segs R P Figure 7 26 Parts Location for Test Channel AGC Amplifier A8 TEST CHANNEL AGC AMPLIFIER 08407 60005 WUE SIO LASS i PIOA6 Fa w AMPLIFIER 20V kr b 20V 2110 1780 Ex 4 C 20V REFERENCE AGC ES 1 C2 68 6 8 A0 AGC 2 T H FEEDBACK R3 rum ES B 26 2 1 0295 AGC CONTROL VOLTAGE 2 015 t 1 0 745 mV A4 CONVERTER 278KHz TEST CHANNEL Q3A SIGNAL gt 1854 0295 RB 511
69. and 2 to 3 inches at the sides The clearances provided by the plastic feet in bench stacking and the filler strips in rack mounting are adequate for the top and bottom cabinet surfaces 2 2 Model 8407A 2 21 Bench Operation 2 22 The Model 8407A cabinet has plastic feet and a foldaway tilt stand for convenience in bench operation The tilt stand inclines the instrument for ease in reading the meter The plastic feet pro vide clearance for air circulation and make the Model 8407A self aligning when stacked on other Hewlett Packard full rack width modular instru ments 2 23 Rack Mounting 2 24 The rack mounting kit contains all the hard ware needed for adapting the Model 8407A cabinet for installation in equipment racks having standard 19 inch spacing Preparation for rack mounting is illustrated in Figure 2 1 TILT STAND FOOT RELEASE BUTTON LARGER NOTCH TRIM STRIP ADHESIVE BACKED FILLER STRIP BOTTOM COVER Figure 2 1 Preparation for Rack Mounting Model 8407 A Operation SECTION III OPERATION 3 1 INTRODUCTION 3 2 This operating section explains the function of the controls and indicators of the Model 8407 A Network Analyzer and describes typical test setups for making transmission and reflection measure ments More detailed test setups are contained in the Operating and Service Manuals covering the individual plug in display units such as the Model 8412A Phase Magnitude Display or the M
70. and is frequency locked to the sweeper RF output signal The power levels from the sweeper are 20 dBm maximum at the RF output and 3 to 15 dBm minimum at the VTO output Flatness of the RF output should be at least 0 5 dB over the full range harmonics should be at least 30 dB below the carrier and spurious signals at least 35 dB below the carrier 1 4 Model 8407A 1 34 INSTRUMENTS COVERED BY MANUAL 1 35 This manual applies directly to instruments having a serial prefix number listed on the title page first three numbers of serial number If the serial prefix of your instrument is other than those listed there are differences between the instrument described in this manual and your instrument These differences are described in Appendix I at the rear of this manual or in a Manual Changes Sheet supplied with this manual If the Manual Changes sheet is missing the information can be obtained from your nearest Hewlett Packard Sales and Service Office See lists at the back of this manual The Manual Changes Sheet may also include an errata section which describes manual correction information which applies to the manual for all instruments Model 8407A Installation SECTION II INSTALLATION 2 1 INITIAL MECHANICAL INSPECTION 2 9 The Network Analyzer was carefully in spected both mechanically and electrically prior to shipment If external damage to the shipping carton is evident ask the carrier s agent to
71. because of the voltage divider R2 and R3 at the input Model 8407A ial Or voe ege Figure 7 20 Parts Location for IF Bandpass Filters 419 A9 TEST IF BAND PASS FILTER 08407 60006 20V peu 20V PASS E 20V lt 20v P O A6 IN FROM l AMP VERN a f pun kHZ TEST CHANNEL OUT IF SIGNAL 1e A12 REFERENCE IF BAND PASS FILTER 08407 60006 20V lt 2 5 20V PASS B 20V lt 6 PAG x gt gt REFERENCE CHANNEL OUT SIGNAL gt L1 31 8 uH IN FROM VERN 2 1278 KHZ 5 i 3 0V P P 8407A IF Bandpass Filter Ser Pre 1144A NOTE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN A9 TEST IF BAND PASS FILTER 08407 60006 II IO n MM M T s eee 2 20V PASS BAND FILTER R OUTPUT EMITTER FOLLOWER 20V 6 C 20V R7 196 1 C4 Cl RI R4 19 2V 01 196 F Na VN 1854 0071 0 62V Me U M n m T M M _ s PASS BAND FILTER VQ OUTPUT EMITTER FOLLOWER R7 196 4 1 0 i 0 1 1 C2 C3 37 8 uH 8200 pF 470 pF i J J2 9 8407A Bandpass Fi
72. in A2A1 Phase Vernier Model 8407A If amplitude stays at 1 2V P P trouble is C3 If amplitude is less than 1V P P maxi mum trouble is in A2A1 Phase Vernier Model 8407A 0 9 TO 1 1 MHz SWEEP OSCILLATOR NETWORK ANALYZER HP 8601A OR HP 8690B 8698B HP 8407A 8412A SWEEP RF OUT OUT POWER PC SPLITTER ag HP 11652 T 6009 0 120 dB ATTENUATOR HP 355D DUAL TRACE OSCILLOSCOPE 180A SPECTRUM ANALY ZER 82241 8552 1415 DC DIGITAL VOLIMETER Ar pui 5 ee o PART OF 11652A REFLECTION TRANSMISS ION KIT Figure 7 6 Test Setup for Troubleshooting Tree and Block Diagram 200 1 TO 310 MHz VTO SIGNAL FROM 0 SWEEPER INPUT 5 15dBm NOMINAL REFERENCE CHANNEL INPUTS J3 20 TO 50 dBm CHANNEL 20 dBm 50VDC MAX REF Jl 10 TO 90 dBm CHANNEL 20dBm 50VDC MAX DIRECT TEST CHANNEL INPUTS J6 20 to 50 dBm CHANNEL 820 dBm 50VDC ATTEN TEST J4 10 TO 90dBm CHANNEL 16 AMPL BANDPASS FILTER 200 310MHz A3 REFERENCE CHANNEL CONVERTER 500 l ATTENUATOR ATTENUATOR A4 TEST CHANNEL CONVERTER 5048 ATTENUATOR 10dB ATTENUATOR 1 ps ANNAM m nve LIMITING AMPL 291 MHz A15 LO MIXER 10 dBm i 7 HiGH
73. lt S O s o aM Y _ NOTES 1 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN 2 SELECTED AT FACTORY DUAL TRANSISTORS A8Q4 805 1104 amp 1105 ARE A MATCHED SET OF FOUR IF ANY ONE OF THE TRANSISTORS NEEDS TO BE REPLACED ALL FOUR SHOULD BE REPLACED BY A FACTORY SELECTED MATCHED SET TKTy H n T sE Y cnT MM 22 2 20V R18 38 3K Q4A R19 1854 0295 38 3K Q4B 1854 0295 1y 7 Q5p 1854 0295 1853 165 mV Q6A 1854 0221 5 0V a t5 my 1854 0295 R16 511 x R26 68 1K XZ REF FOR MEASUREMENT CONDITIONS REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL IGNATION IN P TO OBTAIN WAVEFORMS AND CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Cl WN IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN CR CTORY Q1 ORSA8Q4 805 1104 amp 1105 RI SET OF FOUR IF ANY ONE OF IRS NEEDS TO BE REPLACED ALL JE REPLACED BY A FACTORY HED SET Service A VY Tn T P I n n T2 15 PIOA6 _ 05 OVERLOAD 1854 0295 INDICATOR 8 CIRCUIT 165 mV Q6A es co 044 1854 0221 0 47 5
74. m ed 2 3 Initial Electrical M M 2 1 5 7 Performance Tests 5 41 2 5 Claims 2 1 5 9 Alignment Procedures 5 1 2 7 Repackaging for Shipment 2 1 5 12 Troubleshooting 5 1 2 8 Using Original Packaging 2 1 5 14 Selected Components 5 1 2 10 Using Other Packaging 2 1 2 12 Preparation for Use 2 1 VI REPLACEABLE PARTS 6 1 2 13 Power Requirements 2 1 6 1 Introduction 6 1 2 15 Selecting 115 or 230 Volt 6 3 Ordering Information 6 1 Operation xw 2 17 Power Cable 22 VII SERVICE 74 2 21 Bench Operation 2 2 22 7 1 Introduction 7 1 2 23 Rack Mounting 2 2 HI OPERATION 84 APPENDIX 1 3 1 Introduction 84 Manual Changes IH 9 3 Operating Precautions 8 1 APPENDIX II 3 4 Maximum Input Power 8 1 Option 008 Manual Supplement 51 111 Table of Contents 7 1 7 2 7 3 7 4 7 5 7 6 7 13 7 14 7 15 Model 8407A LIST OF ILLUSTRATIONS Model 8407A and Accessories Preparation for Rack Mounting Model 8407A Front Panel Model 8407A Rear Panel Transmission Test Setup Reflection Test Setup Simplified Block Diagram Equipment Setup for dn Procedures General Information on Schematic Diagrams Schematic Diagram Notes Cabinet Disassembly for Maintenance Loca
75. products to a minimum and produces a clean local oscillator signal MIXER The 200 to 310 MHz VTO signal and the 199 722 MHz PLO signal are transformer coupled into a balanced diode bridge The output at the centertap of T3 is the local oscillator signal 110 MHz LOW PASS FILTER The low pass filter cuts off signals above 110 278 MHz The signals of concern are the 199 722 MHz phase locked oscillator and the 200 to 310 MHz VTO signals which were used in the mixer to produce a difference frequency called the local oscillator signal Model 8407A Figure 7 10 Parts Location for Local Oscillator Mixer Ald 12 LO MIXER 08407 60012 nI POA6 __ MHz LOW PASS FILTER RI Ll L2 L3 L4 l 38 3 0 10 0 15 gH 0 15 0 15 0 1 Tus LOCKED OSCILLATOR 199 722 MHz 713 dBm NOMINAL C2 147 pee 27 5r P O 6 oe OOO A 200 TO 310 MHz Cl VTO XA16 VTO SIGNAL 410 dBm NOMINAL 5 0 C NOTE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN s 8407A LO Mixer Ser Pre 1144 0 MIXER 08407 60012 er rr mre J U uU joo Sn eec MHz LOW PASS FILTER RI Ll L2 L3 L4 L5 R4 38 3 0 10 uH 0 15 uH 0 15 0 15 0 10 38 3 R2 R3 Cl C2 C3 C4 R6 R5 147 147 TR pF ie pF pF pF 147 147
76. so in the troubleshooting tree Figure 7 5 Before attempting any adjustment allow 30 minutes warm up time for the 8407A and plug in 5 11 Table 5 2 lists the test equipment required for alignment Table 5 4 lists the alignment controls and Figure 7 4 shows the location of the controls 5 12 TROUBLESHOOTING 5 13 The troubleshooting procedures are given in Figure 7 5 They should be performed in the order given since each step presumes the proper readout in preceding steps The troubleshooting tree should isolate trouble to a defective printed circuit board or chassis mounted part If further fault isolation is desired use the individual schematic diagram for the defective board and troubleshoot using the waveforms and voltages on the schematic diagram The troubleshooting tree assumes that chassis wiring and cabling is not defective If this type of trouble occurs use standard troubleshooting tech niques to locate trouble 5 14 SELECTED COMPONENTS 5 15 Some component values are selected during manufacturing in order to achieve a desired circuit performance The typical value used in a circuit is shown on the schematic along with a star after the 5 1 Maintenance Model 8407A value These components are listed in the parts list signal above a predetermined level passes through as factory selected the test channel converter A8R20 is selected to obtain the correct I F test channel output 5 16 In the 8407
77. 0 SNDILYNOISJO 3258333338 4 WoIvnNiliv 318v I3VA ZHU 002 VIL 8N0Iv111280 X20 1 S Ha 2 1 I 6 18 4 12 HN _ NMORS 519 ONY SKAD HAS NI V180 21 47115 1531 SI EET dup F ONY SNDI LIONOO 1N3W3a S YI NOU 3400914 115 E er 170 3I 40 29 MEM 142 2 i T 10 E M cape iE 5 011 91630 393181133 SD y QD i A A lig PRORSUS gt 068 661 6100 1681 2 ador idt 3001 x ZA OT 90 2 c 2 sped sgi AD 1 820 E b 1402 1805 1802 i vol L WNGIS JSO i Db aT 1 033201 35 Vd gt Sara THIS 2661 1 HATO HASTO HISTO HN TO 10809 302 100 091 m T i n 61 Or HI 2 914 IU 12 104 59 19 x i i n 7 oT J AQ pi gt 0 gt 20 M L TM 100 0 i SIY 01 pry 213 via 0619 0619 n i HW 222 66 58 EE VET i 8 10 vel ol 7 427 R F 9 7 I 8111 150 aC AOE 014 Hr 00 uni x I 227 0t 900 668 EE 9 d Spa 829 i
78. 0005 08407 40001 08410 20053 08410 2015 ZIP CODE 29671 53204 76221 12477 60153 083976 01880 85008 60657 94040 91352 78267 07105 06601 94304 CANADA 01247 69644 53201 60640 26226 16512 60016 20006 15801 60630 32803 60646 02703 01801 60008 10564 14052 Model 8407A Service SECTION VII SERVICE 7 1 INTRODUCTION 7 3 The schematic diagrams in this section repre sent the circuits electrically They are not wiring diagrams though wire colors are given where prac tical 7 3 The large numbers in the lower right corners of the schematics are the schematic numbers These numbers are used to cross reference connec tions between schematics Smaller numbers pre ceded by A located below the schematic number list the assemblies included in the schematic 7 4 Some of the general information obtainable from the schematic diagrams is shown in Figure 7 1 Notes and explanations of symbols pertaining to all the diagrams are contained in Figure 7 2 Figure 7 2 also contains the test setup and meas Assembly Assembly A2 DC REGULATOR ASSY Wire Color Color Code same as Resistor Code First number identifies Ground Color Second Number identifies Wider Strip Third Number identifies Narrower Strip E g 947 denotes White Yellow Violet wire MIL STD 681 urement conditions required to obtain the normal test point waveforms and voltages noted on the schematic diagrams
79. 001 05X9035A2 DYS 0160 0174 C FXD CER 0 47 UF 80 20 25VDCW 5C1187S CML 01650 0174 C FXD CER 0 47 UF 80 20 25VDCW 5 11875 0180 0291 ELECT 1 0 UF 10 35VDCW 150D105X9035A2 DYS 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105X9035A2 DYS 0160 3491 C FXD CER 0 47 UF 20 50VDCW 8131 050 651 474M 0160 2437 C FXD CER 5000 PF 80 20 200V0CW 2425 000 X5V 502P 1901 0450 DIODE SILICON 1901 0450 1250 1205 CONNECTOR PC RT ANGLE 1250 1205 1250 1205 RT ANGLE 1250 1205 1250 1205 CONNECTOR PC RT ANGLE 1250 1205 1250 1205 CONNECTOR PC RT ANGLE 1250 1205 08407 60029 COIL ASSY LO RF 08407 60029 08407 60029 COIL ASSY LO RF AM 08407 60029 9100 2209 INDUCTOR 3T 8 UH 12 9100 2209 9140 0180 COIL CHOKE 2 70 UH 10 9140 0180 1854 0431 TSTR SI NPN REPLACEABLE BY RCA 2 5179 1854 0431 1854 0431 TSTR SI NPN REPLACEABLE BY RCA 2N5179 1854 0431 1854 0431 TSTR SI NPN REPLACEABLE BY RCA 2N5179 1854 0431 1854 0071 TSTR SI SELECTED FROM 2N3704 1854 0071 1854 0071 TSTR SI NPNCSELECTED FROM 2N3704 1854 0071 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 1853 0034 TSTR SI PNP SELECTED FROM 2N3251 1853 0034 1854 0471 TSTR SI NPN 1854 0471 1854 0471 TSTR SI 1854 0471 1854 0471
80. 0438 R FXD MET FLM 5 11K OHM 1 1 84 0757 0438 A1739 0757 0280 R FXD MET 1K OHM 1 1 8W 0757 0280 ALTRLO 0812 0020 R FXD WW 0 39 OHM 5 3W 0812 0020 A17R11 0757 0280 R FXD MET FLM IK OHM 1 1 8W 0757 0280 17 12 0757 0442 R FXD MET FLM 10 0K OHM 13 1 8w 0757 0442 AL7R13 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W 0698 0083 1781 9698 0083 R FXD FLM 1 96K OHM 1 1 BM 0698 0083 ALTK15 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W OT57 0442 17 16 2100 1758 R VAR WW OHM 5 TYPE V iW 2100 1758 AL7T 17 0757 0438 R FXD MET FLM 5 11K OHM 12 1 8wW 0757 0438 A17418 07517 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 1119 0757 0280 R FXD MET FLM DHM 1 1 88 0757 0280 Al7R20 0751 0280 FLM LK OHM 1 1 8W 0757 0280 See introduction to this section for ordering information 6717 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Reference Mfr Mfr Part Number 11421 0757 0440 R FXD MET FLM 7 50K OHM 1 1 8W 0757 0440 A17R22 0757 0440 R FXD MET FLM 7 50 OHM 1 1 8 0757 0440 1701 1820 0196 ICzLINEAR VCLTAGE 1820 0196 1200 0196 SOCKETS INTEGRATED CIRCUIT 10 PIN 8058 1631 1820 0196 IC LINEAR VOLTAGE REGULATOR INPUT 1820 0196 CHASSIS PARTS FAN AXIAL 115V 50 60HZ ELECT 4600 UF 75 10 50VDCW
81. 063 08407 00011 08407 20126 08407 20041 0 8407 40005 08407 40001 08410 20053 08410 2015 MANUFACTURER SANGAMO ELECTRIC CO PICKENS ALLEN BRADLEY CQ TEXAS INSTRUMENTS INC FERROXCUBE CRO AMPHENOL CORP 50110 STATE amp RECEIVING TRANSTTRON ELECTRONIC CORP WOTOROLA SEMICONDUCTOR PROD INC COMPINENTS CORP AIPCHILD CAMERA INST CDRP SLOAN CN THE THERMALLOY CO CIRNELL DUBLIER ELECT SPECIALITIES MFG HEWLETT PACKARD STANWYCK COIL PROD LTO SPRAGUE ELFCTRIC CD BELDEN CORP 3 UNION INC CENTRALAB DIV CALI MINTATURE LAMP WORKS LINCH MFG CD NIV TRW INC ELECTRO MOTIVE CQ TECHNOLOGICAL PROD LITTELFUSE INC ELECTRONIC INDUSTRIES ASSOCIATION AIRCO SPEE ELECT COMP SWITCHCRAFT INC MARC AK INDUSTRIES RADIO MATERIALS CO AUGAT INC SYLVANIA ELECTRIC PROD MZTHODE MFG CO SEALFCTRO CORP JELEVAN ELECTRONICS CORP HP Part Number SEMICONDUCTOR SEMICANDJZ TOR DIV Table 6 2 Replaceable Parts Description CONNECTOR PC 2 X 15 30 CONTACT MISCELLANEOUS KNOB BLK W ARROW 5 8 OD 1 4 SHAFT STANDOFF 6 32 INTERNAL THREAD STANDOFF 6 32 INTERNAL THREAD PLATE SPRING DIVIOER READDUT WINDOW SPACER READOUT STANDOFF FRONT PANEL BOARD SPACER DIODE STANDOFF SWITCH BOARD READOUT ASSY BOARD EXTENDER 6 PIN EXTRACTOR TOOL DIVIDER BOARD TERMINATION 50 OHM CABLE 55 SERVICE
82. 0757 0279 R FXD FLM 3 16K OHM 1 1 8W 284 80 0757 0279 Al3420 0698 3434 3 R2FXO MET FEM 34 8 NHM 1 1 8 28480 0698 3434 13421 0698 3434 R FXD MET FLM 34 8 OHM 1 1 8W 28480 0698 3434 A13422 0698 3434 MET FLM 34 8 OHM 1 1 84 28480 0693 3434 523 0698 3153 1 R FXD MET FLM 3 83 OHM 1 1 8W 28480 0698 3153 413524 0757 0421 1 R FXD MET FLY 825 OHM 1 1 8W 284 80 0757 042 13 25 0598 3155 1 R FXD FLM 4 64K OHM 12 1 8W 28480 0698 3155 13 26 0698 3446 1 R FXD MET FLM 383 OHM 1 1 8wW 28480 0698 3446 AL3R27 2100 1757 t R VAR WW 500 OHM 6 TYPE V 1 28480 2100 1757 13 28 0757 0442 1 R FXD MET FLM 10 0K OHM 1 1 8W 28480 0757 0642 1 3429 0757 0438 1 R FXO MET FLM 5 11K JHM 19 1 8 28480 0757 0438 13 30 0757 0420 1 R FXD MET FLM 750 OHM 1 1 8W 28480 0757 0420 See introduction to this section for ordering information 1 15 Appendix Model 8407A Table 6 1 Parts List for A13 in instruments with serial number 924 00130 and below and A14 in instruments with serial number 948 00175 and below Reference Designation A13R31 0757 0278 R FXD MET FLM 1 T8K OHM 1 178 0757 0278 A13R32 0698 0083 R FXD MET FLM 1 96K OHM 17 1 8 0698 008 3 A13R33 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W 0698 0083 A13R34 0698 4037 R FXD MET FLM 46 4 OHM 1X 1 8wW 0698 4037 A13K35 0698 4037 R FXD MET FLM 46 4 OHM 14 1 BW 0698 4037
83. 0757 0317 R FXD FLM 38 3 OHM 1 1 8 0698 3435 R FXD MET FLM 237 OHM 1 1 84 0698 3442 R FXD MET FLM 681 OHM 1 1 8W 0757 0419 R FXO MET FLM 1 47K OHM 1 1 8W 0757 1094 MET FLM 1 47K OHM 1 1 8W 0757 1094 R FXD MET FLM 1 47K OHM 1 1 8MW 0757 1094 R FXD MET FLM 90 9 OHM 1 1 8W 0757 0400 R FXD FLM 90 9 OHM 1 1 8W 0757 0400 R FXD MET FLM 237 OHM 1 1 8W 0698 3442 R FXD FLM 192 5 OHM 0 57 1 8wW 0698 7608 R FXD FLM 122 2 OHM 0 252 1 8W 0698 7607 R FXD FLM 192 5 OHM 0 5 1 8W 0698 7608 R FXD FLM 122 2 OHM 0 25 1 8W 0698 7607 R FXD MET FLM 71 15 OHM 0 25 1 8W 0698 5194 R FXD FLM 247 50 OHM 0 25X 1 8W 0698 5401 R FXD MET FLM 96 25 OHM 0 25 1 8W 0698 5196 R FXD MET FLM 61 11 OHM 0 25 1 8W 0698 5192 R FXD MET FLM 96 25 OHM 0 25 1 8W 0698 5196 R FXD MET FLM 38 3 OHM 1 1 8wW 0698 3435 R FXO FLM 71 15 OHM 0 25 1 8 0698 5194 R FXD FLM 96 25 OHM 0 25 1 0698 5196 R FXD MET FLM 61 11 OHM 0 25 1 8W 0698 5192 R FXD FLM 247 50 OHM 0 25 1 8W 0698 5401 R FXD FLM 122 2 OHM 0 252 1 8W 0598 7607 R FXD FLM 38 3 OHM 1 1 8 0698 3435 R FXD FLM 122 2 OHM 0 252 1 8W 0698 7607 R FXD MET FLM 2 61K OHM 1 1 8w 0698 0085 R sFXD MET FLM 1 21K OHM 17 1 8W 0757 0274 R FXD MET FLM OHM 1 1 8W 0757 0280 R FXO FLM 348 OHM 1X 1 8MW 0698
84. 08407 60054 Ag P1 A2A2 _ _ Ll 1s op OVERLOAD i Qu gt t 604 1 20 K3 E 3 E 96 LS 15 REF LEVEL p FROM pese FRONT Pa a 17 AGC 89 C7 7 AMPLITUDE Q6 G 16 1 20v XA7 CONTROLS sel Hn K2 7 6 T Q4 14 Lf EUDES ___le 8 1 8 lt 1 5 PAL E MAN l FRONT PANEL PHASE CONTROLS 12 l l 1 D 5 2 rm 20 m 12 C I 4 10 p gt lt gt Ww c Ad mE A3 E OVID LEVEL lt 4 L GRA RED YELI WHT XLO IN 3 r 2 5 lt lt A6 MASTER BOARD 08407 60054 e I V nA 2 ee 5 U OUTPUT e m TO IF P n 12 ATTEN 4 12 A913 l OVERLOAD A9J4 Keng E lt lt 6 52 K3 20 REF LEVEL lt 5 94 TORN Bos is ee e 3 18 20V LS AGC INFROM A9J2 20 lt z 16 1 av am XA9 gt 12 lt 2 13 1 10 0 b gt w lt 9 jc 26 F S PLO 8 lt 17 gt TP 0 to 20 V ei IN
85. 0R33 0757 0274 R FXD MET FLM 1 21K OHM 1 0757 0274 A1DR34 0757 1094 R FXD MET FLM 1 47K QHM 1 8W 0757 1094 A10R35 0757 1094 R FXD MET FLM 1 4T7TK OHM 1 84 0757 1094 Al0R36 0757 0438 R FXO MET FLM 5 11K OHM 1 8W 0757 0438 10 37 0698 3157 R FXD MET FLM 19 6K OHM 1 8N 0698 3157 0 38 0698 3440 R FXD FLM 196 OHM 17 1 8W 0698 3440 10839 0757 0279 R FXD FLM 3 16 OHM 1 1 86 0757 0279 1050 0698 3440 R FXD MET FLM 196 OHM 1 1 8W 0698 3440 A10R41 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3435 A108R42 0757 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 A10R43 0698 3439 1 R FXD MET FLM 178 OHM 1 1 8 0698 3439 AlOR44 0698 3136 1 R FXD MET FLM 17 8K OHM 1 1 8W 0698 3136 ALOR45 0698 3132 R FXD FLM 261 OHM 1 1 8W 0698 3132 AlOR46 0757 0821 1 R FXD MET FLM 1 21K OHM 1 1 2W 0757 0821 10 97 0757 0289 1 R FXD FLM 13 3K OHM 1 1 8 0757 0289 10 0698 0084 R FXD MET FLM 2 15K OHM 1 1 8W 0698 0084 Al9R49 0698 3155 R FXD MET FLM 4 64K OHM 1 1 8w 0698 3155 A10J1 1820 0321 1 INTEGRATED CIRCUIT HI SPEEO COMPARATOR 5 72 7104 11 08407 60004 1 REFERENCE CHANNEL AGC AMPLIFIER ASSY 08407 60004 All 1121 11 2 11 3 AL1C4 A11C5 AL1C6 11 7 11 8 11 9 11 19 11 11 11 12 A11C13 AL1C14 A11CR1 11 2 ALLCR3 AllLi 1101 1152 1103 11 1195 1105 1197 1161 112 1153 AllR4 1145 ALIRO AL1R7 ALLKS 1159 08407 60104 0180 0116 01
86. 1 8W 0698 3445 0698 7607 R FXD FLM 122 2 OHM 0 25 1 8W 0698 7607 0698 7607 R FXD FLM 122 2 OHM 0 25 1 8W 0698 7607 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W 0698 0083 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3435 0698 0085 R FXD MET FLM 2 61K OHM 1 1 8wW 0698 0085 0757 0274 R FXD MET FLM 1 21K OHM 1 1 8wW 0757 0274 0757 0 280 R FXD MET FLM OHM 12 1 8W 0757 0280 0757 042 R FXD MET FLM 825 OHM 12 1 8W 0751 0421 0698 3428 R FXD FLM 14 7 OHM IZ 1 8W 0698 3428 0757 0419 R FXD MET FLM 681 OHM 1X 1 8W 0757 0419 0757 0420 R FXD MET FLM 750 OHM 1 1 8W 0757 0420 0757 0316 R FXD MET FLM 42 2 OHM 1 1 8W 0757 0316 0757 0420 R FXD MET FLM 750 OHM 1 1 8M 0757 0420 0757 0394 R FXD MET FLM 51 1 OHM 1X 1 8 0757 0394 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3435 0698 3151 R FXD FLM 2 87K OHM 1 1 8W 0698 3151 0757 0280 R FXD MET FLM OHM 12 1 8wW 0757 0280 0698 7250 R FXD FLM 3 83K OHM 2 1 8w 0698 1250 0698 3132 R FXO FLM 261 OHM 1 1 8W 0698 3132 0698 3450 R FXD MET FLM 42 2K OHM 1 1 8W 0698 3450 0757 0438 R FXD MET FLM 5 11 OHM 12 1 8 0757 0438 0698 3132 R FXD FLM 261 OHM 1 1 8W 0698 3132 0757 0288 R FXD MET FLM 9 09K OHM 1 1 8W 0757 0288 0757 0403 R FXDO MET FLM 121 OHM 1 1 8W 0751 0403 0757 0428 R FXD MET FLM 1 62K OHM 17 1 8W 0757 0428 0757 0419 R FXD MET FLM 681 OHM 12 1 8W 0757 0419 0757 0288 MET FLM 9 09K OHM 1 1 8W 0757 0288 0698 3447 R FXD MET FLM 422 CHM 1 1 8W 0698 3447 0757 0199
87. 12 C7 C8 A7 Ie ope OUTPUT TO IF d 7 P ATTEN ATTENUATOR 2 278KHz TEST CHANNEL gt Ci lt SIGNAL 3 60s 5 9V AAAA 10 7 V P P 6 6 V R23 1 2610 16 8 ee REFERENCE DESIGNATIONS REFERENCE DESIGNATIONS WITHIN OUTLINED A8 ASSY ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al C1 18 2 IS AIR DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN CRI 3 Q1 8 R1 26 A e A8 Figure 7 27 Test Channel AGC Amplifier A8 Schematic Diagram 1 27 Service Model 8407A SERVICE SHEET 11 A7 Programmable IF Attenuator BUFFER The two or three stage buffers are used to provide isolation between attenuator sections This prevents interaction between adjacent sections 10 OR 20 DB ATTENUATOR Relay K1 connects R9 in parallel with R8 and decreases IF attenuation by 10 dB Relay K2 connects R10 to ground and decreases IF attenuation by 20 dB K1 and K2 should be operated individually for proper circuit function The front panel switch actuates K1 or K2 one at a time 30 DB ATTENUATOR Relays K3 and K4 are 30 dB attenuator stages Relay K3 shorts across R25 and K4 across R39 which decreases the attenuation of the IF signal by 30 dB for each relay 7 28 Model 8407A A7 Figure 7 28 Parts Location for Programmable IF Attenuator A7 A7 PROGRAMMABLE IF ATTENUATOR
88. 1525 1854 0439 TSTR SI NPN 2N3055 1854 0439 TSTR SI NPN 2N3055 2100 2728 R VAR CERMET IK OHM 20 LIN 2W 2100 2728 2100 2727 R VAR CERMET 500 OHM 20 LIN 2W 2100 2727 0698 7276 R FXD FLM 46 4K OHM 2 1 8W 0698 7276 3101 1244 SWITCH PUSHBUTTON 5 53 55480 120 A1H 3101 1234 SWITCH SLIDE 114 1242 9100 2871 TRANSFORMER POWER 9100 2871 0840 T 60046 08407 60121 08407 60046 08407 60121 CABLE ASSYz FLEX CABLE ASSY POWER INCLUDES 051 R3 51 CABLE ASSY REF CHAN DIRECT RF CABLE ASSY REF CHAN ATTEN RF INPT 08407 60064 08407 60065 08407 60064 08407 60065 CABLE ASSY TEST CHAN DIRECT RF INPUT CABLE ASSY TEST CHAN ATTEN RF INPUT CABLE ASSY PHASE VERNIER POT TO 2 1 CABLE ASSY AMPL VERNIER POT TO A2A2 CABLE ASSY PHASE LOCKED OSC OUTPT TO LO 08407 60066 08407 60067 08407 60076 08407 60077 08407 60039 08407 60066 08407 60067 08407 60076 08407 60077 08407 60039 08407 60040 08407 60078 08407 60079 08407 60080 08407 60042 CABLE ASSY LOCAL OSC TO TEST CHAN CONV CABLE ASSY REF CHAN FROM TO PLUG IN CABLE ASSY TEST CHAN AMPL FROM BPF TO CABLE ASSY TEST CHAN PHASE FROM CABLE ASSY REF CHAN TO REAR PANEL 08407 60040 08407 60078 08407 60079 08407 60080 08407 60042 08407 60043 08407 60044 8120 1348 08407
89. 2 0150 0050 C FXD CER 1000 PF 80 20 1000VDCM 0678102 1027526 14 25 0160 0386 C FXD CER 3 3 TO 0 25 PF 500VDCH 301 000 52H0 339C 1 25 FACTORY SELECTED PART AL4C25 0160 3535 C FXD MICA 510 PF 5 100VDCW RDM15F511J1C 14 27 0150 0115 CER 27 PF 10 500 0 301 000 U2 JO 270K A14C28 0160 2264 C FXO CER 20 PF 5 500VDCN 301 000 COG0 2005 Al4C29 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML Al C30 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML A14C31 0150 0050 C FXD CER 1000 PF 80 20 1000VDCW C0678102 10228S25 CDH A1l4C32 0160 2257 C FXD CER 10 PF 5 500VDCW 301 000 COHO0 100J Al4C33 0160 2257 C FXD CER 10 PF 5 500VDCW 301 000 0 0 100 Al4C34 0160 3534 C FXO MICA 510 PF 5 l100VDCW ROMISF511J5 IC Al4C35 0160 3534 C FXD MICA 510 PF 5 100VDCW RDM15F511JIC 4036 0160 3060 C FXD CER 0 1 UF 20 25 3C42A CML Al4C3T7 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML CER 3 6 0 25 PF SOOVDCW FACTORY SELECTED PART Al4C38 0160 2246 301 000 C08J0 369C C FXD CER 24 5 500VO0CW 301 000 CO0G0 240J Al4C39 0160 2266 Al CRI 1901 0025 DIODE SILICON 100 1 FD 2387 AleCR2 1902 0025 DOIGDE BREAKOOWN 10 0V 5 400 MW 1902 0025 Al4CR3 0122 0263 C VOLTAGE VAR 47 PF 10 60WV 1N5148 RECOMMENDED REPLACEMENT
90. 2 DYS 150D685X9035B2 DYS RDM15E510J1C 192P56292 PTS 301 000 COH0 100J 10 23 0180 0116 1022 0180 0116 10225 0160 2201 ALOC26 0160 0158 19 27 0160 2257 C FXD ELECT 6 8 UF 10 35VDCW CsFXD ELECT 6 8 UF 10 35VDCW C FXD MICA 51 PF 52 C FXD MY 0 0056 UF 10 200VDCW C FXD CER 10 PF 5 500VDCW 301 000 COHO0 100J 1500685X903582 DYS 10 28 0160 2257 10 29 0180 0116 CER 10 PF 5 SOOVDCW ELECT 6 8 UF 10 35VDCW ALOCRI 1901 0050 0100 51 200 MA AT 1 FDA 6308 10 2 1901 0050 0100 51 200 1 6308 AlOCR3 1901 0050 OIODE SI 200 MA AT 1V FDA 6308 AlOCR 1901 0050 DIODE SI 200 AT 1 FDA 6308 ALOCRS 1901 0050 0100 51 200 MA AT 1 FDA 6308 ALOCR6E 1901 0050 DIODE SI 200 AT 1V FDA 6308 ALOCR 1902 3182 DIODE BREAKDOWN SILICON 12 1V 5 1902 3182 ALOCRS 1902 0048 OIGDE BREAKDOWN 6 81 5 5710939 134 9 1901 0050 DIODE SI 200 AT FDA 6308 10 10 1901 0050 DIODE SI 200 AT 1V FDA 6308 10 11 1901 0050 DIODE SI 200 1 6308 ALOCRI 1901 0050 OIODE SI 200 MA AT 1 FDA 6308 19 13 1901 0050 0100 51 200 6308 12 81 1910 0016 DIODE GERMANIUM 100 0 85 60PIV D2361 1 1 9100 2573 INDUCTOR SHIELDEO 1 MH 10 155 102 1012 9140 0137 COIL FXO RF 1000 UH 5 9140 0137 1013 9140 0137 COIL FXD RF 1000
91. 2 PF 500VDCW 08407 60014 08407 60143 301 NPO0 2 4 PF 301 000 0 519 301 000 COH0 829C 0160 2259 C FXD CER 12 PF 5 500V0CH 301 000 C0GO 120J 0160 2262 C FXD CER 16 PF 5 500VDCW 301 000 COGO 160J 0160 2264 CER 20 PF 53 SOOVDCW 301 000 060 200 0160 2266 C FXD CER 24 PF 5 500VDCW 301 000 060 240 0160 2679 C FXD CER 30 5 500VD0CMW 308 000 C060 300J 0160 2667 CER 36 PF 5 500VDCW 308 000 060 360 1901 0025 DIODE SILICON 100 1 FD 2387 1901 0025 DIODE SILICON 100MA 1V FD 2387 1901 0025 DIODE SILICON 100MA 1V FD 2387 1901 0025 DIODE SILICON 100 1 FD 2387 0598 7400 R FXD FLM 8 195 OHM 0 1 1 8W 0698 7400 0698 7405 FLM 3 862 OHM 0 1 1 8W 0698 7405 0698 7402 FLM 2 424K OHM 0 1 1 8W 0698 7402 0698 7401 R FXD FLM 1 710K OHM 0 1 1 8 0698 7401 0698 7403 R FXO FLM 1 285K OHM 0 1 1 8W 0698 7403 0698 7404 R FXD FLM 1 005K OHM 0 1 1 8 0698 7404 0598 7500 R FXD FLM 807 3 OHM 0 12 1 8W 0698 7500 0698 7406 R FXD FLM 661 4 OHM 0 1 1 88 0698 7406 0698 7 399 R FXD FLM 549 9 OHM 0 1 1 8W 0698 7399 5060 0112 CONNECTOR 15 CONTACTS 5060 0112 05 330 80003 0840 7 60022 CONNECTOR PC 15 PIN FRONT PANEL ASSY LESS 2 1 AND A2A2 REBUILT 08407 60022 REQUIRES EXCHANGE ELEC
92. 20 0180 1743 ELECT 0 1 UF 10 35VDCw 1500104 9035 2 0 5 ATC21 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 ATC22 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 ATC 23 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 7 2 0140 0193 MICA 82 PF 5 0140 0193 ATC25 0180 2206 C FXD ELECT 60 UF 10 6 15006 06 X900682 ATC26 0160 2249 CER 4 7 PF SOOVDCW 301 4 7 PF 7 27 0160 2201 C FXD MICA 51 PF 57 RDM15E510J1C 7 28 0160 2249 CER 4 7 500VDCW 301 NPO 4 7 PF ATC29 0160 2201 C FXD MICA 51 PF 5 RDM15E510J1C A7C30 0140 0205 C FXD MICA 62 PF 5 300VDCWHW RDM15E 620J3C ATC31 0160 2199 C FXD MICA 30 PF 5 300VDCW 0160 2199 47032 0160 2249 4 7 SOOVDCW 301 NPO 4 7 PF ATC 33 0160 2249 C FXD CER 4 7 PF 500VDCW 301 NPO 4 7 PF 1901 0039 OIODE SILICON 200MA 50wV 1901 0039 2 1901 0039 DIODE SILICON 200 5 1901 0039 ATCR3 1901 0039 DIODE SILICON 200MA 50WV 1901 0039 ATCRA 1901 0039 DIGDE SILICON 200MA SOWV 1901 0039 5 1901 0039 DIODE SILICON 200MA 50WV 1901 0039 ATCR 1901 0039 OIODE SILICON 200MA 50WV 1901 0039 0490 0 884 RELAY REED 0490 0884 RECOMMENDED REPLACEMENT See introduction to this section for ordering information Replaceable Par
93. 25 OHMS 5 Page 7 13 Figure 7 13 Change A13R28 to 511 OHMS Page 7 15 Figures 7 14 and 7 15 Replace Figure 7 14 and Figure 7 15 in Section VII of Manual with Figures 7 14 and 7 15 Change E in this Appendix Page 7 19 Figure 7 19 Change A11C12 and A11C13 to 15 UF Delete A11R29 Page 7 27 Figure 7 27 Change A8C12 and A8C13 to 15 UF Change A8R4 to 2370 OHM Change A8R20 to 6190 OHMS FACTORY SELECTED Delete A8C18 and connect A8R27 a 10 ohm resistor in its place Page 7 35 Figure 7 35 Change A17R1 A17R10 to 0 25 OHMS CHANGE F Page 6 7 Table 6 1 Change A7C25 to HP Part No 0160 2250 C FXD CER 5 1 0 25 PF 500 VDCW Delete A7C30 A7C33 Change A7K1 A7K4 to HP Part No 0490 0760 RELAY REED 0 1 AMP MAX 250V MIN Recommended replacement is 0490 0884 Page 7 29 Figures 7 28 and 7 29 Replace Figure 7 28 and Figure 7 29 in Section VII of Manual with Figures 7 28 and 7 29 Change F in this Appendix Model 8407A Appendix I Figure 7 14 Parts Location for Phase Loched Oscillator A14 Change E Serial No 948 00176 thru 983 00445 5 Model 8407A Appendix 1 9FF00 896 1 1 91 I00 9F6 lag T Bunuo PIV 4040171980 posoo q osvug GT L ANDIA NAOHS SY 313 1dWO 38 S iN3N d O2 HAHLO JO SNOILYNOiS3O SL 20 84 52 u3g N 199355 5300110 NI 011 91532 1 n4 Qalvia3dHuBY 38 531186355 43 171
94. 32 08407 60146 08407 60146 PANEL ASSY FRONT STANDARD 08407 60055 PANEL ASSY FRONTCOPTIONS gt 08407 60055 5060 0222 HANDLE ASSY 5H SIDE 5060 0222 5060 8735 RETAINER HANDLE ASSY OLIVE GRAYCSTANDARD 5060 8735 5060 0765 RETAINER HANDLE 55 OPTIONS 5060 0765 5060 0767 FOOT ASSY FM 5060 0767 1490 0030 ILT 1490 0030 5000 0052 PLATE FLUTED ALUMINUM 5000 0052 5060 8741 MOUNT GRAY STANDARD 5060 8741 5060 0776 KIT RACK MOUNT LIGHT GRAY OPTIONS 5060 0776 5000 8719 COVER SIDE 7 X 16 0LIVE GRAY STANDARD 5000 8719 5000 0743 COVER SIDE 8LUE GRAYCOPTION X95 5000 0743 5060 0267 COVER ASSY TOP OLIVE GRAYCSTANDARD 5060 0267 5060 0227 COVER ASSY TOP BLUE GRAYCOPTION X95 5060 0227 5060 0 268 COVER ASSY BOTTOM OLIVE GRAYCSTANDARD 5060 0268 5060 0228 COVER ASSY BOTTOM BLUE GRAYCOPTION X95 5060 0228 08407 00057 PANEL REAR 08407 00057 08407 60122 PANEL ASSY REAR 08407 60122 5040 0361 LOCK EXTRACTOR STANDARD 5040 0361 5040 0272 LOCK EXTRACTOR LIGHT GRAYCOPTIONS 5040 0272 See introduction to this section for ordering information 6 19 Replaceable Parts Reference Designation 1251 2338 0370 0103 0380 0173 0380 0175 08407 00052 08407 00053 08407 20044 08407 20046 08407 20048 08407 20049 08407 20055 08407 60094 5060 0050 03950 4001 08407 00021 11 593A 08410 60067 10503A 5920 7977 5020 3275 5020 7978 5020 3276 08407 00
95. 3445 R FXD MET FLM 1 96K DHM 1 1 8 0698 0083 MET FLM 825 OHM 1 1 88 0757 0421 R FXD MET FLM 14 7 OHM 1 1 8W 0698 3428 R FXD MET FLM 681 OHM 1 1 8W 0757 0419 R FXO MET FLM 750 OHM 1 1 8W 0757 0420 R FXD MET FLM 42 2 OHM 1 1 8W 0757 0316 R FXD MET FLM 750 OHM 1 1 8w 0757 0420 R FXD MET FLM 51 1 OHM 17 1 8w 0757 0394 R FXD MET 38 3 OHM 1 1 8W 0698 3435 R FXO MET FLM 1 33 OHM 1 1 88 0757 0317 MET FLM OHM 1 1 88 0757 0280 8 R FXD MET FLM 3 83K OHM 1 1 8wW 0698 3153 R FXD MET FLM 3 83K OHM 1 1 8W 0698 3153 R FXD FLM 26 1K OHM 1 1 8W 0698 3159 3 R FXD MET FLM 7 50K OHM 1 1 8W 0757 0440 R FXD MET FLM 1 33K OHM 1 1 8W 0757 0317 R FXD FLM 1 96 CHM 1 1 88 0698 0083 R FXD FLM OHM 17 1 8W 0757 0280 R3FXO MET FLM 1 10K OHM 1 1 8W 0757 0424 2 MET FLM 82 5K OHM 15 1 8W 0757 0463 1 R FXD MET FLM 31 6K OHM 1 1 8W 0698 3160 2 R FXD MET FLM 2 37K OHM 1 1 8W 0698 3150 R FXD MET FLM 26 1K OHM 1 1 8W 0698 3159 FACTORY SELECTED PART R FXD MET FLM LK OHM 18 1 8W 0757 0280 R FXD MET FLM IK OHM 1 1 8W 0757 0280 R FXD MET FLM 42 2 OHM 12 1 8W 0757 0316 BEAD SHIELDING 56 590 65 3B RECOMMENDED REPLACEMENT BEAD SHIELOING 56 590 65 3 RECOMMENDED REPLACEMENT BEAD SHIELDING
96. 3C42A CML 0140 0184 C FXD MICA 8200 PF 1 100VDCW 0140 01 84 0160 3076 C FXD CER 470 PF 52 200VDCM 0BD 0180 0291 C FXD ELECT 1 0 UF 10 35VOCW 1500105X9035A2 DYS 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 0160 3060 C FXD 0 1 UF 20 25VDCW 3C42A CML 0160 3060 C FXD CER O 1 UF 20 25VDCW 3C42A CML 1250 1195 CONNECTOR RF SUB MINIATURE SERIES 52 053 0000 1250 1195 CONNECTOR RF SUB MINIATURE SERIES 527 053 0000 1250 1195 CONNECTOR RF SUB MINIATURE SERIES 52 053 0000 1250 1195 CONNECTOR RF SUB MINIATURE SERIES 52 053 0000 9100 2209 INDUCTDR 37 8 UH 1 9100 2209 1854 0071 TSTR SI NPNESELECTED FROM 2N3704 1854 0071 1854 0071 TSTR SI NPNESELECTED FROM 2N3704 1854 0071 0698 7236 R EXD FLM OHM 2 1 8W 0698 7236 0698 7260 R FXD FLM 10K OHM 2 1 8W 0698 7260 0698 7260 R FXD FLM LOK OHM 2 1 8W 0698 7260 0698 7219 R FXD FLM 196 OHM 1 8 0698 7219 0698 7260 R FXD FLM LOK OHM 1 84 0698 7260 0698 7 260 R FXD FLM 10K OHM 1 8W 0698 7260 See introduction to this section for ordering information 679 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Reference Mfr A9RT7 0698 7219 10 08407 60010 10 08407 60106 AlOCI 0180 0197 A10C2 0180 0197 Mfr Part Number R FXD FLM 196 OHM 2 1 8W AGC FEEDBACK AMPLIFIER ASSY REBUILT 08407 60010 REQUIRES EXCHANGE C FXD ELECT 2 2 UF 10 20VDCW C FXO ELECT 2 2 UF 10 20VDCW 0698 7219 08407 60010 08407 60106 1500225X9020A2 DYS 150D225X9020A2 DYS
97. 4 3003 30 135 Q3H21VW V 34V ONY POITY lt 08 ORV 58015 ISNVMHI TYNT LLV SY 31312402 gay SIH3N gNO2 83810 30 590115491530 I LY Amass JO 93gwn0K l9w3ssv 530072 M NI NOI4YNOHS 3C 7114 QgalviAsagavY 3av 3118W355 oon 3412100 SHOU YNDIS3O 328383438 NMORS ie E m E 539v 10A ONY SWH033AVM NIYISO 40135 1531 4S8 M ANY SNOLLIQNOO 1N3W330S V3W 801 2 380913 335 SNOILYNDISIG 325343138 do sp 17 S wildy diy gp 92 AOZ a XE EA i y 0619 86 f 07895 0 82 0011 0606 2 DE aui 014 zw 9 lt 89 Foy 92 Y 9 12 5 as xc EA E 3Hh M T AU AUI 0512 961 oo DL AA AA 88 ne lis 1 G Ht es E tel 520 781 vu nis v0 wed 00 9681 8 M 10 QIK nue j 1220 PS8I i e EE T co 89b 115 812 AZ 0 i 0000 6681 2 8 i x 860 x 8o 29 52 39v 39v1304 ex Se ud eres CT 2 lt journo Y 90d NI 39v us
98. 4 4 1710 5 1285 6 1005 7 807 3 8 661 4 9 049 9 YES Trouble is in A2A2 Amplitude Vernier Disconnect coaxial cable at A2A2 ampli tude VERNIER connector front panel assembly and measure resistance tch assy Adjust AMPLITUDE VERNIER control through its range and amplitude trace on 8412A should move smoothly across cable as AMPLITUDE VERNIER is adjusted Resistance should be be YES tween zero and 500 ohms YES Trouble is in A2A2 Amplitude Vernier resistance ground s should be Adjust PHASE VERNIER control through its range and phase trace on 8412A should move smoothly Trouble is in Al front panel switch assy YES ISTANCE OHMS 8195 3862 2424 1710 1285 1005 807 3 661 4 549 9 e Vernier 2 ampli on iront Troubleshooting Complete resistance VERNIER Trouble is AMPL VERNIER control R2 Id be be e Vernier ntrol on NO Disconnect coaxial xable at 2 1 phase vernier VERNIER connector on front panel assembly Measure resistance of 1K across coaxial cable through full range of PHASE VERNIER control This indi cates R1 is not open and C3 is not shorted Reconnect coaxial cable to VERNIER connector on A2A1 through a miniature coaxial tee and connect oscilloscope to tee Adjust PHASE VERNIER control through its range and osciloscope waveform should change between zero and 1 2V P P YES Trouble is
99. 514 8454 AlSCR3 10514 8454 DIODE SILICON MATCHED QUAD 10514 8454 ALSCR4 1051 4 8454 DIODE SILICON MATCHED QUAD 10514 8454 A15J1 1250 1205 CONNECTOR PC RT ANGLE 1250 1205 AL5J2 1250 1205 CONNECTOR PC RT NGLE 1250 1205 See introduction to this section for ordering information 6715 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Designation 293 1250 1205 CONNECTOR PC RY ANGLE 1250 1205 AL5L1 9100 2247 COIL FXO RF 0 10 UH 103 9100 2247 1512 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 AL5L3 9100 2249 COIL CHOKE 0 15 UH 102 9100 2249 Al5L4 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 1515 9100 2247 COIL FXO RF 0 10 UH 10 9100 2247 1515 9100 2247 COIL FXO RF 0 10 UH 10 9100 2247 1517 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 1518 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 1519 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 15119 9100 22 7 COIL FXD RF 0 10 UH 10 9100 2247 AL5RI1 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3415 1532 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 0698 3438 A15R3 0698 3438 R FXD MET FLM 147 OHM 17 1 8W 0698 3438 Al5R4 0698 3435 R FXO MET FLM 38 3 OHM 1 1 8W 0698 3435 1545 0698 3438 R FXD MET FLM 147 OHM 1 1 8 0698 3438 AL5R6 06 98 3438 R FXD FLM 147 OHM 1 1 8 0698 3438 1547 0757 0394 FLM 51 1 OHM 1 1 8 0757 0394 Al5TI 08552 6024 TRANSFORMER CODE VELLOW 08552 6024 AL5T2 08553 6012 TRANSFORMER RF CODE BLUE 08553 6012 ALST3 08553
100. 6 AMPLIFIER 08407 60001 E rr U O M U BUFFER AMPL BANDPASS FILIER R4 1200 C2 13 01 R5 51 1 0 6 po m l REAR PANEL Cl C25 18 19 LIO R6 NEN 0 01 42 2 0 8V 3 3pF 0 2 0 12 0 luH 3 3pF 42 2 _ VTO INPUT 2 4 5 1 026 200 TO 310 MHz Q 1854 0345 18 pE Mis IGNAL p SWEEPER poem 5 TO 15 dBm L 13 NOMINAL L af 55 9 5 1K 8mA C i 06 lt a 2 gt 8407A VTO Amplifier Ser Pre 1144A NOTE 1 TWO INDUCTORS BANDPASS FILTER 08407 60050 ARE PRINTED CIRCUIT SPIRALS 2 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN Quam s Im awwawa rr area s aawawPawFa s L3 0 47 uH BANDPASS FILTER LIMITING AMPLIFIER R12 20 avc C10 R13 51 R17 7 5v3 R9 90 562 6 4V 1372 1200 6 7V TET C7 C12 C16 il 19 51 RIA TO 3 Rig 0 05 uH 0 05 uH 0 05 uH 6 4V 6 7V C27 L9 LO R C6 Cli 0 4V C14 0 5V 2 1pF 0 12 1 3 3pF 422 ogy IF spr 2 V N is prt 74 N N N gt NOTE NOTE C28 Q2 Q3 tN Q5 i oF R7 OV 1854 0345 1854
101. 6 R FXD FLM OHM 2 1 8 0698 7236 Al4a58 0698 7236 R FXD FLM 1K OHM 2 1 8 0698 7236 14859 0598 7 221 FLM 237 OHM 2 1 8 0698 7221 Al R60 0698 7250 R FXD FLM 3 83 OHM 2 1 8 0698 7250 0410 0195 CRYSTAL QUARTZ 0410 0195 1200 0770 SOCKET CRYSTAL 8000 A6 26 4 2 Al471 0410 0194 9170 0847 CRYSTAL QUARTZ BEAD SHIELDING RECOMMENDED REPLACEMENT LO MIXER ASSY REBUILT 08407 60012 REQUIRES EXCHANGE 0410 0194 55 590 65 3 15 Al5 08407 60012 08407 60110 08407 60012 08407 60110 501 0160 2260 C FXD CER 13 52 5 301 000 060 130J A15C2 0160 2260 C FXD CER 13 PF 51 500VDCW 301 000 000 130 Al5C3 0160 2260 CER 13 PF 5 500VDCW 301 000 COGO 130 Al5C4 0160 2260 CER 13 5 500VDCM 301 000 COGO 130 15 5 0160 0179 C FXD 33 PF 5 300VDCN DM15E330J 300 1526 0160 0179 C FXD MICA 33 5 300VDCW DM15E330J 300V 15 7 0160 0179 C FXD 33 PF 5 300VDCM 0 15 30 300V A15C8 0160 0179 C FXD MICA 33 PF 5 300VDCW DM15E330J 300V 15 9 0160 2266 C FXD CER 24 5 500VDCN 301 000 060 240 A15CR1 19514 8454 DIODE SILICON MATCHED QUAD 10514 8454 A15CR2 10514 8454 DIODE SILICON MATCHED QUAD 10
102. 60041 08 40 7 60 045 CABLE ASSY TEST CHAN TO REAR PANEL CABLE ASSY REAR PANEL VTO INPT TO VTO CABLE ASSY POWER DETACHABLE CABLE ASSY VTO AMP DUT TO LO MIXER CABLE ASSY LOCAL OSC OUT TO AUTO LEVEL 08407 60043 08407 60044 KHS 7041 08407 60041 08407 60045 0840 7 60062 08407 60068 08407 60070 08407 60071 08407 60072 CABLE ASSY LOCAL OSC TO REF CHAN CONV CABLE ASSY TEST AGC TO IF ATTEN CABLE ASSY TEST IF ATTEN VER CABLE 55 5 CHAN CONV TO AGC AMPL CABLE ASSY AMPL VER TO TEST CHAN 08407 60062 08407 60068 08407 60070 08407 60071 08407 60072 08407 50073 08407 60074 08407 60075 CABLE ASSY REF CHAN CONV TO REF AGC AMP CABLE ASSY REF AGC AMPL TO PHASE VER CABLE ASSY PHASE VER TO REF CHAN BPF NOT ASSIGNED NOT ASSIGNED 08407 60073 08407 60074 08407 60075 See introduction to this section for ordering information 6 18 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Mfr Code Mfr Part Number Reference IHP part Number Oty Description Designation CABINET PARTS NOTE THE GENERAL COLOR SCHEMES ARE AS FOLLOWS 8407ACSTD INDICATES COLOR SCHEME WHICH INCLUDE MINT GRAY FRONT PANEL AND OLIVE GRAY CABINET 840TA O0PT AB5 INDICATES LITE GRAY PANEL 8407ACOPY X95 INDICATES COMPLETE COLOR SCHEME OF LITE GRAY PANEL BLUE GRAY CABINET 5060 0232 FRAME ASSY MODIFIED 5060 02
103. 7 0316 R FXD MET FLM 42 2 OHM 1 1 8W 0757 0316 1 0698 3132 R FXD FLM 261 OHM 1 1 8W 0698 3132 413839 0698 3442 R FXD MET FLM 237 OHM 12 1 8W 0698 3442 13349 698 3153 R FXD FLM 3 83K OHM 1 1 8 0698 3153 13 41 0757 0280 RsFXD MET FLM 1K OHM 1 1 8W 0757 0280 AL3R42 0757 0280 R FXD MET FLM LK OHM 1 1 8W 0757 0280 A13R43 0757 0401 R FXD MET FLM 100 OHM 1 1 8 0757 0401 A13846 0757 0316 R FXD MET FLM 42 2 OHM 1 1 84 0757 0316 13545 0757 0316 R FXD FLM 42 2 OHM 1 1 8W 0757 0316 1301 ASSIGNED 1302 1821 0001 TRANSISTOR ARRAY SI CA3046 56 590 65 3B AL3Z1 9170 0847 BEAD SHIELDING RECOMMENDED REPLACEMENT BEAD SH ELDING RECOMMENDED REPLACEMENT BEAD SHIELDING RFCOMMENDED REPLACEMENT 1372 9170 0847 56 590 65 38 1323 91 70 0847 56 590 65 3B A1324 9170 0847 56 590 65 38 BEAD SHIELDING RECOMMENDED REPLACEMENT BOARD ASSY PHASE LOCKED OSCILLATOR RECOMMENDED REPLACEMENT Al 08407 60123 08407 60123 08407 60107 REBUILT 08407 60123 REQUIRES EXCHANGE 08407 60107 0160 3060 CER 0 1 UF 20 25VDCW 3C42A CML 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML 0160 2206 C FXD MICA 160 PF 5 0160 2206 0160 2206 MICA 160 PF 5 0160 2206
104. 704 185 0071 A14O12 1854 0071 TSTR SI NPN SELECTEO FROM 2N3704 1854 0071 AL4213 1854 0071 TSTR SI NPNSELECTED FROM 2N3704 1854 0071 1491 1854 0431 TSTR SI NPN 2 5179 1 21 gt 1854 0019 TSTK SI NPN 1854 0019 AL4R1 0698 7255 R FXD 6 19K OHM 2 1 8 0698 7255 See introduction to this section for ordering information 1 16 Model 8407A Appendix t Table 6 1 Parts List for A13 in instruments with serial number 99400130 and below and A14 in instruments with serial number 948 00175 and below Mfr Reference Designation Mfr Part Number AL4R2 0698 7255 R FXD FLM 6 19K OHM 2 1 8W 0698 7255 41443 0698 7248 3 R FXD FLM 3 15K OHM 2 1 8w 0698 7248 1454 0698 7 248 R FXD FLM 3 16K OHM 2 1 84 0698 7248 1455 0698 7265 2 R FXD FLM 16 2K OHM 2 1 8 0698 7265 Al4R6 0698 7265 R FXD FLM 16 2K OHM 2 1 8W 0698 7265 1557 0698 7255 R FXD FLM 6 19K OHM 2 1 81 0698 7255 1458 0698 7255 R FXD FLM 6 19K OHM 2 1 8W 0698 7255 410 0698 7236 4 R FXD FLM LK OHM 2 1 8wW 0698 7236 ALGR1LO 0698 7250 1 R FXD FLM 3 83K
105. 8 3438 MET FLM 147 OHM 1 1 8W 28480 0698 3838 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 23480 0698 34 38 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 28480 0698 3438 0698 6996 R FXD FLM 200 OHM 0 1 1 8MW 28480 0698 6996 0698 3157 R FXD MET FLM 19 6K OHM 17 1 8wW 28480 0698 3157 0698 3440 R FXD MET FLM 196 OHM 1 1 8W 284 80 0698 3440 0698 5161 R FXD MET FLM 38 3K OHM 1 1 8W 28480 0698 3161 0757 0317 R FXD FLM 1 33K OHM 1 1 8W 28480 0757 0317 0598 3153 R FXD FLM 3 83 OHM 1 1 8 28480 0698 3153 0757 0200 R FXD MET FLM 5 62K OHM 1 1 84 284 80 0757 0200 0698 3447 R FXD MET FLM 422 OHM 1 1 8W 28480 0698 3447 0698 3444 R FXD FLM 316 OHM 1 1 8W 28480 0698 3444 0757 0428 R FXD 1 62K OHM 1 1 8W 28480 0757 0428 0698 7398 R FXD 6 124K OHM 0 1 1 84 28480 0698 7398 0757 0394 R FXD MET FLM 51 1 OHM 12 1 8MW 28480 0757 0394 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 28480 0698 3438 06 98 3438 R FXD MET FLM 147 OHM 1 1 8h 28480 0698 3438 0698 6996 R FXD FLM 200 OHM 0 1 1 8 28 amp 80 0698 6996 0698 3157 R FXD MET FLM 19 6K OHM 1 1 8W 28480 0698 3157 0698 3440 R FXD MET FLM 196 1 1 8W 284 80 0698 3440 0698 3161 R FXD MET FLM 38 3K OHM 1 1 8W 28480 0698 3161 0757 0317 R FXD MET FLM 1 33K OHM 1 1 8 28480 0757 0317 0698 3153 FLM 3 83K OHM 14 1 8W 28480 0698 3153 0757 0200 R FXD MET FLM 5 62K OHM 1 1 8 28480 0757 0200 0698 3447 FLM 422 OHM 1 1 8W 28 80 0698 3447 0698 3444 R FXD
106. 8 7267 R FXD MET FLM 19 6K OHM 2 1 8W 0698 7251 14837 0698 7253 R FXD MET FLM 5 11K OHM 2 1 84 0698 7253 A14238 0698 7264 R FXD FLM 14 7K OHM 2 1 84 0698 7264 Al6K239 0698 7257 R FXO FLM 7 5K OHM 2 1 8wW 0698 7257 814540 0698 7260 R FXD FLM 10K OHM 2 1 8W 0698 7260 Al4R41 0698 7260 R FXO FLM LOK OHM 2 1 8w 0698 7260 AL4K42 0698 7236 R FXD FLM LK OHM 2 1 88 0698 7236 Al48R42 RECOMMENDED REPLACEMENT W A14R43 14 43 0698 7243 R FXD FLM 1 96K OHM 2 1 8W 0698 7243 14563 RECOMMENDED REPLACEMENT W Al4R42 414544 0698 7212 R FXD FLM 100 OHM 2 1 8W 0698 7212 Al4R45 0698 7250 R FXD FLM 3 83K OHM 2 1 8W 0698 7250 Al4R46 0698 7236 R FXD FLM LK OHM 22 1 8W 0698 7236 Al4847 0698 7229 R FXD FLM 511 OHM 2 1 8wW 0698 7229 ALGR47 FACTORY SELECTED PART Al RA48 0698 7223 R FXD FLM 287 OHM 2 1 8 0698 7223 AL4R49 0757 0159 R FXD FLM 1000 OHM 1 1 2W 0757 0159 AL4259 0757 0159 R EXD MET FLM 1000 OHM 1 1 2W 0757 0159 Al4R51 0698 7205 R FXD FLM 51 1 OHM 2 1 8W 0698 7205 ALGR52 2100 1761 R VAR WW 10K OHM 5 TYPE V 1 2100 1761 Al4R53 0698 7253 MET FLM 5 11K OHM 2 1 8MW 0698 7253 41654 0698 7258 R FXD FLM 8 25K OHM 2 1 8 0698 7258 1 4855 0698 7 259 R FXD FLM 9 09K OHM 2 1 8 0698 7259 14456 0698 7236 R FXD FLM 1K DHM 2 1 8wW 0698 7236 14457 0698 7 23
107. 80 0116 0180 0116 0180 0116 0160 2930 0180 0291 0160 0174 0180 1 746 0160 2214 0160 2306 0160 2234 0180 0116 0180 0116 0170 0040 1901 0039 1902 00 1 1901 0050 9100 1 649 1354 0071 1853 0020 1854 0295 1854 0221 1853 0010 0757 0438 0757 0438 0757 0416 0698 3154 0698 3440 0757 0288 0757 0278 0698 0084 0757 0424 ORDER 08407 60036 AS amp All MATCHED PAIR WITHOUT EXCHANGE REBUILT 08407 60004 08407 60005 A8 11 MATCHED PAIRDREQUIRES EXCHANGE C FXD ELECT 6 8 UF 10 35VDCW C FXD ELECT 6 8 UF 10 35VDCW C FXO ELECT 6 8 UF 10 35VDCW C FXO ELECT 6 8 UF 10 35V0CW C FXD CER 0 01 UF 80 20 100VDCW C FXD ELECT 1 0 UF 10 35VDCW C FXD CER 0 47 UF 80 20 25VDCW C FXD ELECT 15 UF 10 20VO0CW 1 C FXD MICA 680 PF 5 1 C FXD MICA 27 PF 5 1 C FXD CER 0 51 PF 500VDCW C FXD ELECT 6 8 UF 10 35VDCW C FXO ELECT 6 8 UF 10 35VDCW C FXD MY 0 047 UF 10 200VDCH DIODE SILICON 200MA 50NV DIODE BREAKDOWN 5 11V 5 DIGDE SI 200 AT IV 1 COIL CHOKE 620 UH 5 TSTR SI NPN SELECTED FROM 2N370 4 TSTR SI PNP SELECTED FROM 2 3702 TSTR SI NPN PART OF A8Q 4 PART OF 894 TSTR SI NPN REPL BY 2N4044 TSTR SI PNP SELECTED FROM 2N3251 R FXD MET FLM 5 11K OHM 15 1 8W R FXD MET FLM 5 11K OHM 1 1 8wW R sFXD MET FLM 511 OHM 1 1 8W R FXD MET FLM 4 22K OHM 1 1 8W R FXD MET FLM 196 OHM 1 1 8W R FXD MET FLM 9 09K OHM 12 1 8W R FXD MET FLM 1 78K OHM 1 1 8W FLM 2 15K OHM 1 178 R FX
108. 80A 1802A 1820A Spectrum Analyzer HP Mode 8552A 8554L 141S DC Digital Voltmeter HP Model 3439A 3433A Adapter subm to BNC HP Part No 1250 0881 Part of HP Model 11652A Accessory Kit Figure 5 1 Equipment Setup for Alignment Procedures 0 20 Model 8407A Maintenance Table 5 6 Alignment Procedure TEST PROCEDURE AND DESCRIPTION INITIAL SETUP DESCRIPTION Setup and adjust instrument for phase locked condition PROCEDURE a Connect equipment as shown in Figure 5 1 Remove 8407A top and bottom covers Place the 8407A on its side and loosen the two screws securing the converter assemblies and swing the casting out away from the chassis Set 8407A controls as follows DISPLAY REFERENCE CAL Zero GB at top switch position DISPLAY REFERENCE 10 dB step switch and 1 dB step switch at top position 0 dB Ret GCHAN LEVEL 2 245 oa sg gee eee Middle position VERNIER oa ed eco me ey ase Midrange PHASE VERNIBE 4 222309 00 e ep EO Eden Midrange Set sweep oscillator controls for single frequency CW operation at 1 MHz Adjust sweep oscillator RF output for a REF CHANNEL LEVEL meter indication near the top of the OPERATE range POWER SUPPLY A17R7 and A17R 16 DESCRIPTION the 20 Volt power supplies are adjusted for correct output NOTE If an overvoltage of gt 22 Vdc occurs at either the 20 or
109. 8250 23 7K 1853 0020 20 7 ii TUN 2 300m SEC SEE NOTE 1 PHASE LOCK OSCILLATOR CONTROL 3 SEE FIGURE 7 2 FOR MEASUREMENT CON DITIONS AND TEST SETUPS TO OBTAIN LOW PASS FILTER WAVEFORMS AND VOLTAGES SHOWN BUFFER 250 MHz ws rr ar 20V f 199 722 MHz 13 dBm NOMINAL A15 L8 L9 J PLO PLO OluH 0 12 uH OUT IN x 199 722 MHz L10 6 lt PHASE LOCKED C33 O luH 1 OSC SIGNAL 1854 0431 032 10 EI 10 A_I M Y I n n U A14 Figure 7 15 Phase Locked Oscillator A14 Schematic Diagram 7 15 Service Model 8407A SERVICE SHEET 5 A3 Reference Channel Converter LOCAL OSCILLATOR AMPLIFIER Q11 is a grounded base configuration RF amplifier followed by emitter follower Q10 L1 adjusts swept frequency phasetracking between the test and reference channel converters The output of Q10 is amplified by complementary amplifiers Q8 and Q9 RF AMPLIFIER Q1 forms a grounded base amplifier L2 adjusts the swept frequency amplitude tracking between converters A3 and A4 The RF input to Q1 comes either through a 10 dB attenuator from the DIRECT input or through a 50 dB attenuator from the ATTEN input Q2 and Q3 are direct coupled emitter followers to isolate the RF amplifier circuit from balanced mixer 1 MIXER Balanced mixer A3A1 mixes the local oscilla
110. 9 4815 0698 7205 1 R FXD FLM 51 1 CHM 27 1 8W 0698 7205 Al4R36 0698 724T 1 R FXD FLM 2 87K OHM 2 1 8 0698 247 AL4R37 0698 7248 R FXD FLM 3 16K OHM 2 1 8W 0698 7248 AL4R38 0698 7245 1 R FXD MET FLM 2 37K OHM 2 1 8W 0698 7245 Al4R39 0698 7227 2 FLM 422 OHM 2 1 8 0698 7227 Al4R4 0698 7227 R FXD FLM 422 OHM 2 1 8W 0698 7227 14 41 0698 7244 1 K FXD FLM 2 15K OHM 2 1 8W 0698 7244 ALGR42 0698 7260 R FXO FLM 10K OHM 2 1 BW 0698 7260 AL4R43 0598 7260 R FXD FLM 10K OHM 22 1 8W 0698 7260 Al4RA44 0698 7223 R FXD FLM 287 OHM 2 1 8W 0698 7223 1 6945 0698 7251 1 R FXD FLM 4 22K OHM 22 1 8W 0698 7251 A1l4k46 0698 7215 1 R FXD FLM 133 OHM 2 1 88 0698 1215 Al4RA T 0698 7254 1 R FXD FLM 5 62K OHM 2 1 8W 0698 7254 Al amp RA48 0598 7 235 R FXD FLM 1K OHM 2 1 8 0698 7236 A1L4R49 2100 1761 1 R VAR WW 10K OHM 5 TYPE V 1M 2100 1761 Al4XY1 1200 0770 1 SOCKET CRYSTAL 8000 AG 26 Al Y1 0410 0195 1 CRYSTAL QUARTZ 0410 0195 Al4Y2 0410 0194 1 CRYSTAL QUARTZ 0410 0194 1 71 9170 0016 BEAD MAGNETIC SHIELDING 56 590 65 3B See introduction to this section for ordering information 1 17 Appendix I Model 8407A A14 Figure 7 14 Parts Location for Phase Locked Oscillator A14 Change I Serial No 924 00131 thru 948 00175 1 18 Appendix I Model 8407A ASSY SNOIIVN91S3Q 128383338 Le WN9IS 250 x 033201 36 Hd ZHW22 DLY i 9L100 8F6 n4u I IO0 F66
111. 92 39292 5 13213 0180 0301 1 C FXO MY 3 912 UF 10 200VDCW 56289 192 12392 5 413214 0150 0158 1 C FXD WY 0 0056 UE 10 200VDCW 56289 192P56292 PTS 13015 0130 0291 C FXD ELECT 1 0 UF 10 35VO0Cw 56289 1500105X9035A2 DYS 13015 9160 0174 C FXD 0 47 UF 80 20Z 25VDCwW 56289 5C1187S CML Al5 17 0180 1743 1 C FXD ELECT O 1 UF 10 35VDCN 56289 150D104X9035A2 DYS A13C13 0180 0291 C FXD ELECT 1 0 UF 10 35V0CW 56289 1500105 9035 2 0 5 AL3C19 0150 3060 CER 0 1 UF 20 25VDCW 56289 3C42A CML 1023 0170 0940 1 C FXD 0 047 UF 10 200VDCW 59289 192P47392 PTS 13221 9180 0291 C FXD ELECT 1 0 UF 10 35VDCW 56289 1500105 9035 2 0 5 1 1 1991 0025 2 OIODE SILTCON LOOMA LYV 07263 FD 2387 Al3CR 2 1991 0 447 1 DIJDE SILICON 28480 1901 0347 Al3CKk3 1902 2702 1 DIODE RREAKDOWN 2 37V 5 28480 1902 3002 AL3CK4 1901 09025 Of DE SILICON 100 1 07263 FD 2387 Al 3CR5 1902 0064 1 DIODE BREAKDGWN 7 5V h 28480 1902 0064 AL3L1 9140 0096 2 COIL CHOKE 1 00 UH 10 99800 1537 12 312 9149 0096 COIL CHOKE 1 00 UH 10 99800 1537412 1313 9100 1612 1 CUILZFXD RF 0 33 UH 20 28480 9100 1612 13 lt 9100 1623 1 COIL CHOKE 27 0 UH 5 99800 1537 48 AL3L5 9100 1627 1 COIL CHOKE 39 UH 5 82142 15 1315 2J A1321 1854 0345 4 TSTR SI NPN 80131 2N51 7S 1322 1854 0345 TSTR SI NPN 80131 2N5179 1393 1354 0345 TSTR SI NPN 80131 2N5179 1304 1853 0018 1 TSTR SI PNP SELECTED FROM 2N4250 28480 1853 0018 1325 1853 0020 T TS
112. 93 C FXD CER 0 01 UF 480 208 LOOVOCW 801 800011 15 22 0160 2251 C FXD CER 5 6 PF 5 301 000 COHO 569G 15 23 0160 2251 C FXD CER 5 6 500VDCW 301 000 COH0 5696 Al6724 0160 3060 C FXD CER 0 1 UF 20 25VDCW 3C42A CML Al6C25 0150 0059 CER 3 3 0 25 PF 500VDCW 301 000 CO0JO0 339C 15 26 0160 2263 C FXD CER 18 PF 5 500VDCW 301 000 060 180 16 27 0160 2243 CER 2 7 0 25 PF 500VDCW 301 000 CO0JO 2T9C Al6C28 0160 2263 CER 18 PF 5 500VDCW 301 000 060 180 Al6C29 0150 0059 C FXD CER 3 3 0 25 PF 500VDCW 301 000 COJ0 339C ALSL1 9100 0346 COIL FXD 0 05 UH 20 H 10886 Al6L2 9100 0346 COIL FXD 0 05 UH 204 H 10886 A15L3 9100 2255 COIL CHOKE 0 47 UH 10 9100 2255 Al5L4 5100 0346 COIL FXD 0 05 UH 20 H 10886 1515 9100 2255 COIL CHOKE 0 47 UH 10 9100 2255 AL6L6 9100 2248 COIL CHOKE 0 12 UH 10 09 4416 2K AlSLT 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 Al5L8 9100 2241 COIL FXD RF 0 10 UH 10 9100 22 T 1519 9100 2248 COIL CHOKE 0 12 UH 10 09 4 16 2 A16L10 9100 2247 COIL FXD RF 0 10 UH 10 9100 2247 A1531 1854 0345 TSTR SI NPN 2N5179 1502 1854 0345 TSTR SI NPN 2 5179 1623 1854 0345 TSTR SI NPN 2N5179 Al524 1854 0332 TSTR SI NPN 38868 1535 18 54 0332 TSTR SI NPN 38868 Al6Q6 1854 0345 TSYR SI NPN 2N5179 1647 1854 0345 TSTR SI NPN 2N5179 Al6R1 0757 0316 MET FLM 42 2 OHM 14 1 8wW 0757 0316 15 2 0757 0280 R FXD MET FLM OHM 1 1 88 0757 0280 1683 0757 0280 R
113. A A4R58 ASR20 A11R24 A11R24 is selected to obtain a specific IF refer and A14R47 are factory selected A4R58 is se ence channel output signal A14R47 is selected for lected to produce an overload indication when a a specific phase locked oscillator output Table 5 1 Rebuilt Exchange Assembly Part Numbers Assembly New Part No Rebuilt Exchange Assy Part No Al Front Panel Switch Assembly 08407 60014 08407 60143 A2 Front Panel Assembly 08407 60022 08407 60144 2 1 Phase Vernier 08407 60052 08407 60115 A2A2 Amplitude Vernier 08407 60053 08407 60116 A3 Ref Channel Converter 08407 60093 08407 60101 A3 and A4 Matched Set and W10 Cable A4 Test Channel Converter 08407 60092 5 Rectifier Assembly 08407 60026 08407 60117 A6 Master Board 08407 60015 None Programmable IF Attenuator 08407 60011 08407 60103 08407 60104 A8 Test Channel AGC Amplifier A8 amp A11 Matched Pair 08407 60005 08407 60006 A9 Test IF Bandpass Filter 08407 60105 A10 AGC Feedback Amplifier 08407 60010 08407 60106 A11 Reference Channel AGC Amplifier 08407 60004 08407 60104 A8 amp A11 Matched Pair A12 Reference IF Bandpass Filter 08407 60006 08407 60105 A138 Automatic Level Control 08407 60002 08407 60102 A14 Phase Lock Oscillator 08407 60123 08407 60107 A15 Local Oscillator Mixer 08407 60012 08407 60110 A16 VTO Amplifier 08407 60001 08407 60112 A17 Power Supply 08407 60013 08407 60113 T bo
114. A DISPLAY REFERENCE 10 dB step switch to the top position and adjust the DISPLAY REFERENCE CAL thumbwheel for 0 c Set the sweep oscillator for minimum sweep width at any frequency in the 8407A operating range Adjust the RF output level for maximum power out or until the 8407A REF CHAN LEVEL meter indicates slightly above the OPERATE region whichever comes first d Adjust the 8407A DISPLAY REFERENCE 1 dB step switch and AMPLITUDE VERNIER control for zero 0 5 mV on DVM Adjust the display unit PHASE OFFSET and 8407A PHASE VERNIER for a zero degree phase reference on the display unit e Check each DISPLAY REFERENCE 10 GB step as follows 1 Set the DISPLAY REFERENCE 10 dB step switch one position down 2 The DVM indication should be 500 mV Record the difference between 500 mV and the measured voltage as shown in the table below Record the phase shift indication of the display unit 3 Increase the test channel input power by 10 dB by removing 10 dB from the step attenuator at the test channel input Adjust the 8407A AMPLITUDE VERNIER control for a zero 0 5 mV DVM indication and adjust the PHASE VERNIER for a zero degree phase indication 4 Repeat the above steps to check the remaining 10 dB step positions Note The 8407A REDUCE INPUT RATIO light may come on at high test channel input levels If so reduce the sweep oscillator output power to extinguish the light 5 If the DVM indications are all out of tolerance on on
115. AGE VAR 15 PF 10 30wV MV315 201 Al J1 1250 1205 CONNECTOR PC RT ANGLE 1250 1205 1401 9100 1658 COIL CHOKE 1600 UH 5 2500 38 41412 9100 1658 COIL CHOKE 1600 54 2500 38 141 3 9100 2247 COIL FXD RF 0 10 UH 10 9100 2247 1 9100 1643 COIL CHOKE 300 UH 5 9100 1643 1445 9100 1643 COIL CHOKE 300 UH 5 9100 1643 Al L6 9100 2247 COIL FXOU RF 0 10 UH 10 9100 2247 1417 08407 60028 COIL ASSY ADJ 08407 60028 Al 4L8 9100 2247 COIL FXD RF O 10 UH 10 9100 2247 Al 4L9 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 Al L12 9100 2249 COIL CHOKE 0 15 UH 10 9100 2249 Al4L11 9100 2247 COILS FXD RF 0 10 UH 10 9100 2247 1421 1854 0C71 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 1 92 1854 0 71 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 49 3 1353 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 1 494 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 49 2 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 A1406 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 9917 1854 0071 TSTR SI NPN LSELECTED FROM 2N3704 1854 0071 Al408 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 A1429 1854 0 71 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 Al4910 1854 0071 TSTR SI NPNESELECTED FROM 2N3TO 1854 0071 14011 1854 0071 TSTR SI NPN SELECTED FROM 2N3
116. ANNEL ATTEN 40 dB Input Connector Reference channel RF input that attenuates the RF input signal by 40 dB greater than the REF CHANNEL DIRECT input Signal input range for the ATTEN input is between 20 and 50 dBm Damage level is above 26 dBm and 50 Vdc REF CHANNEL PROBE POWER connec tor Provides power for active reference channel accessory probe Figure 3 1 Front Panel Features 2 of 2 3 3 Operation Model 8407A REAR PANEL FEATURES M 5 E 2 PRA VTO IN Connector Input for voltage tuned oscillator VTO signal from sweeper VTO signal frequency should be in the range of 200 1 to 310 MHz and power level should be between 5 and 15 dBm nominal The V TO signal is fre quency locked to the sweeper RF output signal The HP 8601A or 8690B 8698B Sweep Oscillator VTO output provides the proper signal IF REF Connector IF reference channel signal output This signal is a 278 kHz sine wave with fixed amplitude at about 1 volt p p IF TEST Connector IF test channel signal output This is a 278 kHz sine wave signal containing all the amplitude and phase AA STIONE E UNA information present on the RF input sig nal Amplitude range is 0 to about 1 volt Line Voltage Selector Permits operation from 115 or 230 Vac Number showing on the slider is the selected operating voltage Adjacent number on the panel is the c
117. C4 Page 7 23 Figure 7 23 Delete 10 14 Page 7 35 Figure 7 35 Delete 17 and A17C4 1 28 1 24 Model 8407A Appendix II APPENDIX Il OPTION 008 MANUAL SUPPLEMENT INTRODUCTION This supplement describes the differences in the Model 8407A Network Analyzer with Option 008 installed In addition it describes the manual changes necessary to document the addition of Option 008 DESCRIPTION The Model 8407A Option 008 Network Analyzer is used to test devices used in a 75 ohm system The addition of Option 008 consists of installing four 50 to 75 ohm matching resistors HP Part No 11658 60001 in the 8407A front panel In all other respects the instrument is a standard 84074 The original front panel 50 ohm BNC connectors mate with these adapters Therefore the 8407A can be converted to 50 ohm inputs at any time by removing the 50 to 75 ohm matching resistors and securing the original 50 ohm BNC connectors to the front panel However if frequent changes from 75 to 50 ohmsare required it would be more convenient to use two model 11658A 50 to 75 ohm matching resistors which are externally con nected to the front panel NOTE The front panel connectors not in use are terminated with 50 ohm terminations for both the standard instrument and Option 008 The resultant mismatch for the Opt ion 008 does not affect the measurement because this mismatch is padded out by internal attenuators MODIFICATION KIT
118. CR1 T3 CR4 MIXER w w w h an m Vanna aFOpaaAx aan sp Y _ s a J 0 8 us 1omV P LO L10 L9 L8 L7 L6 OUT 0 10g H 0 15 0 15 0 15 0 10 uH g R7 08 C7 C6 C5 51 1 lt C9 24 pF gt 110 MHz LOW PASS FILTER re REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN Service P O A6 _ _ Lo 3 8 KHz TO 110 278 MHz AUTO LEVEL L10 19 L8 17 L6 out LOCAL OSC OUTPUT XAI3 CONTROL 0 10gH 0 15 0 15 0 15 0 10 pH 35 HER KOMINAL d ee pee pF REFERENCE DESIGNATIONS 15 ASSY REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g RI OF ASSEMBLY IS DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN A15 Figure 7 11 Local Oscillator Mixer A15 Schematic Diagram 7 11 Service 7 12 Model 8407A SERVICE SHEET 3 A13 Automatic Level Control X10 AMPLIFIER The local oscillator signal passes through an X10 amplifier composed of Q1 and Q2 Q1 isa grounded base amplifier driving emitter follower Q2 Q2 drives amplifier Q3 The gain of Q3 changes with frequency because of bypass capacitor
119. D MET FLM 1 10K OHM 1 1 8W See introduction to this section for ordering information 08407 60104 150D685X903582 0YS 1500685X9035B2 DYS 1500685X9035B2 DYS 150D685X9035B2 0YS TA 1500105X9035A2 DYS 5CI1BTS CML 0180 1746 0160 2214 0160 2306 301 000 COK0 518C 1500685 903582 0 5 1500685X903582 DYS 192 47392 5 1901 0039 5210939 98 6308 9100 1649 1854 0071 1853 0020 1854 0295 1854 0221 1853 0010 0757 0438 0757 0438 0757 0416 0698 3154 0698 3440 0757 0288 0757 0278 0698 0084 0757 0424 6 11 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts m Mfr 0698 3438 Reference Designation Mfr Part Number ALLRLO R FXD MET FLM 147 OHM 1 1 8W 0698 3438 Al1R11 0598 3151 R FXD MET FLM 2 87K OHM 1 1 8w 0698 3151 AilR12 0757 0439 R FXD MET FLM 6 81K OHM 1 1 8W 0757 0839 All1Kk13 0757 0416 R FXD MET FLM 511 OHM 1 1 8W 075T 0416 11314 0757 0817 R FXD MET FLM 750 OHM 12 1 2W 0757 0817 AllR15 0698 3404 R FXO FLM 383 OHM 1 7 1 2W 0698 3404 11816 0757 0416 R FXD FLM 511 OHM 17 1 8W 0757 0416 AllR17 0757 0817 R FXD MET FLM 750 OHM 1 1 2W 0757 0817 Al1R18 0698 3438 R FXD MET FLM 147 OHM 173 1 8 0698 3438 A11R19 0757 0422 R FXO MET FLM 909 OHM 1 1 8W 0757 0422 Alia22 0757 0422 R FXD MET FLM 909 OHM 1 1 8W 0757 0422
120. DJ A3 Figure 7 17 Reference Channel Converter A3 Schematic Diagram 1 17 Service Model 8407A SERVICE SHEET 6 A11 Reference Channel AGC Amplifier 20 dB AMPLIFIER Q1 and Q2 form a high gain IF amplifier T1 changes the output from single ended to push pull output PUSH PULL AMPLIFIER Q3 forms a push pull amplifier which drives T2 through amplifier gain control Q4 and Q5 AMPLIFIER GAIN CONTROL Signal flow between Q3A Q3B and transformer T2 is controlled at Q4 and Q5 by the AGC control signal from A10 As the AGC control signal goes in the positive direction Q5A and Q5B turn on and Q4A and Q4B turn off This gives maximum IF signal to transformer T2 Conversely when the AGC control signal goes in the negative direction Q5A and Q5B turn off and and 948 turn on This gives the minimum IF signal to transformer T2 Instead of the signal flowing through Q5A and Q5B to transformer T2 the IF signal flows through and to ground IF AMPLIFIER Q6A and Q6B form a differential amplifier followed by amplifier Q7 A feedback loop is formed between the output of Q7 and the input of Q6A by resistors R24 and R25 and capacitor C11 7 18 Model 8407A All Q7 R2 Figure 7 18 Parts Location for Reference Channel AGC Amplifier 11 All REFERENCE CHANNEL 08407 60004 s gt AB PIOAG x m 3 lt 5110 1780 0
121. ECT input If the REF CHAN LEVEL meter indicates above the OPERATE range reduce the rf signal level from the sweeper The signal ratio between channels may also be reduced by reducing the signal level into the test channel This may be done by changing the input rf cable from the test channel DIRECT connector to the ATTEN 40 dB input or by reducing the rf signal level from the sweeper 4 Adjust the plug in display unit 8412A 8413A or 8414A for a convenient zero ref erence If an 8412A is used adjust for center screen The 8407A DISPLAY REFERENCE CAL thumbwheel controls should be set to 3 1 Operation 3 2 Model 8407A FRONT PANEL FEATURES REPYCHAN LEVEL TEST CHANNEL 4 1 REF CHANNEL DIRECT Input Connector Reference channel RF input for signal in puts in the range of 10 to 90 dBm If the input RF signal is greater than 10 dBm the ATTEN input should be used In this case a 50 ohm termination must be con nected to DIRECT input 2 UNCAL REDUCE INPUT RATIO light This is an overload indicator that monitors signal levels of the test channel within the instrument When an overload occurs either the reference channel signal must be in creased or the test channel signal must be decreased The reference channel signal may be increased by either adjusting the REF CHANNEL LEVEL ADJ attenuator switch or by changing the RF input cable from ATTEN to DIRECT input The test channel s
122. EFORMS AND VOLTAGES ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g R OF ASSEMBLY 15 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN 44 805 1104 AND 1105 FOUR IF ANY ONE OF THE BE REPLACED ALL FOUR Y A FACTORY SELECTED R17 R26 750 1780 C13 6 8 m O OOO eV Service _ AD Q5B ox v 4 Papa 1854 0295 p 11 0V xalo AMPL 162mV Q6A g x 278 KHz REF R20 909 1854 Q6B 10 i CHANNEL SIGNAL 0221 414 1854 0221 628mV x 2 4 E E B ow d A2 DM EAE CM x A2A1 R24 R25 047 IN 162K 75 e d 3 S 2 1 pF 1 1 1 3160 _ C A 5 5V P P R28 V 6V dtr oh 4 OUTLINED FULL DESIGNATION IN OF ASSEMBLY Al THER COMPONENTS ARE A11 Figure 7 19 Reference Channel AGC Amplifier A11 Schematic Diagram 7 19 Service 7 20 Model 8407A SERVICE SHEET 7 A9 Test IF Bandpass Filter amp A12 Reference IF Bandpass Filter PASSBAND FILTER A9 and A12 are identical circuit boards L1 C2 and C3 form a parallel resonate circuit at 278 kHz allowing only the IF signal to be passed by the circuit OUTPUT EMITTER FOLLOWERS Q1 and Q2 are conventional emitter followers The output of Q2 is 6 dB lower than Q1
123. ENCE CHANNEL REF CHANNEL LEVEL 6 EDBACK APLIFIER UNCAL REDUCE INPUT RATIO e EE LL S P aa AGC AMPL 10 dB STEP 1 dB STEP TEST CHANNEL OUTPUT APLIFIER ATTENUATOR ATTENUATOR Figure 4 1 Simplified Block Diagram 4 3 4 4 Model 8407A Maintenance SECTION V MAINTENANCE 5 1 INTRODUCTION 5 2 This section provides Instructions for perform ance testing calibration and troubleshooting of the HP8407A Network Analyzer Test equipment required for these procedures is listed in Table 5 2 If the test equipment recommended is not avail able other equipment may be used if its perform ance meets the Critical Specifications listed in the table 5 3 PRINTED CIRCUIT BOARD EXCHANGE 5 4 The 8407A is unique in that the printed cir cult boards of the instrument have been carefully designed to be independent of each other so that problems can be easily isolated to the board level HP encourages the use of the troubleshooting tree in Section VII for isolating problems to the board level and has made rebuilt exchange printed circuit boards available to complement this repair approach The rebuilt exchange boards are avail able at a much reduced cost from a new board The lower price is dependent on the return of the defective board to HP A replacement board should be ordered by the rebuilt exchange stock number listed in Table 5 1 The board can be ordered through the nearest Hewle
124. ET FLM 237 OHM 1 1 8W 0698 3442 AL3K17 06 98 3442 R FXD MET FLM 237 OHM 1 1 8W 0698 3442 13318 06 98 3430 R FXD MET FLM 21 5 OHM 1 1 8W 0698 3430 13 19 0698 3430 R FXO MET FLM 21 5 OHM 1 1 8W 0698 3430 1342 0698 3150 R FXD FLM 2 37K OHM 1 1 8 0698 3150 A1l3R21 0757 0403 R FXD MET FLM 121 OHM 1 1 8W 0757 0403 AL3R22 0757 0438 R FXD MET FLM 5 11K OHM 1 1 8M 0757 0438 AL3K23 0698 3156 R FXD FLM 14 7K OHM 1 1 88 0698 3156 AL3R24 0757 0438 R FXD MET FLM 5 11K OHM 1 1 8W 0757 0438 A13R25 0757 0280 R FXD MET FLM 1K OHM 1 1 8W 0757 0280 13 26 0757 0442 R FXD MET FLM 10 0K OHM 1 178 0757 0442 AL3R27 2100 2521 R VAR FLM 2000 OHM 10 LIN 1 2W 2100 2521 R FXD MET FLM 100 OHM 1 1 8W 0757 0401 RECOMMENDED REPLACEMENT AL3R28 0757 0401 13829 0698 3154 R FXD FLM 4 22K OHM 1 178 0698 3154 A13R30 0757 0420 R FXO MET FLM 750 DHM 1 1 8W 0757 0420 A13R31 0698 3445 R FXD MET FLM 348 OHM 17 1 8W 0698 3445 13432 0757 0290 R FXD MET FLM 6 19K OHM 1 1 89 0757 0290 AL3R33 0757 0290 R FXD MET FLM 6 19K OHM 1 1 8 0757 0290 A13R34 0757 0419 R FXD MET FLM 681 OHM 1 1 8 0757 0419 13 35 0698 3444 R FXD FLM 316 OHM 1 1 8W 0698 3444 13 36 0698 3437 R FXD FLM 133 OHM 1 1 8W 0698 3437 AL3R37 075
125. FLM 1 96K OHM 1 1 88 0698 0083 0757 0280 R FXO FLM OHM 1 1 8W 0751 0280 0757 0441 RsFXD FLM 8 25 OHM 1 1 8W 0757 0441 0757 0278 R FXD MET FLM 1 78 OHM 1 1 8W 0757 0278 0698 0084 R FXD MET FLM 2 15K OHM 1 8 0698 0084 0757 0424 R FXD MET FLM 1 10K OHM 1 8W 0757 0424 0598 3151 R FXD MET FLM 2 87 OHM 1 8 0698 3151 0757 0439 R FXO MET FLM 6 81K OHM 1 8 0757 0439 0757 0398 R FXD MET FLM 75 OHM 1 1 88 0757 0398 0757 0416 R FXD MET FLM 511 DHM 12 1 8W 0757 0416 0757 0817 R FXD MET FLM 750 OHM 1 1 2W 0757 0817 0698 3404 R FXD MET FLM 383 OHM 1 l 2W 0698 3404 0757 0416 R FXD MET FLM 511 OHM 1 1 8W 0757 0416 0757 0817 R FXD FLM 750 OHM 1 1 2W 0757 0817 0698 3161 R FXD MET FLM 38 3K OHM 1 1 8W 0698 3161 0698 3161 R FXD MET FLM 38 3K OHM 1 1 8W 0698 3161 0757 0447 R FXD FLM 16 2K OHM 1 1 8W 0751 0447 FACTORY SELECTED PART 0698 3152 R FXD MET FLM 3 48K OHM 1 1 8W 0698 3152 0698 0085 R FXD FLM 2 61K OHM 1 1 8W 0698 0085 0698 0085 R FXD FLM 2 61K OHM 1 1 84 0698 0085 0757 0839 R FXD MET FLM 10K OHM 12 1 2W 0757 0839 0757 0398 R FXD MET FLM 75 OHM 16 1 8W 0757 0398 0757 0461 R FXD MET FLM 68 1K OHM 1 1 88 0757 0461 0757 0346 R FXD FLM 10 OHM 14 1 8W 07517 0346 9100 2870 TRANSFORMER 9100 2870 9100 2869 YRANSFORMER 9100 2869 98407 60006 BAND PASS FILTER ASSY 08407 60006 08407 60105 REBUILT 08407 60006 REQUIRES EXCHANGE 08407 60105 0160 3060 C FXD CER 0 1 UF 20 25VDCW
126. FLM 348 OHM 14 1 89 0698 3445 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8W 0698 3435 0757 0418 R FXD MET FLM 619 OHM 1 1 8 0757 0418 0757 0317 R FXD MET FLM 1 33K OHM 1 1 8 0757 0317 0698 3435 R FXO MET FLM 38 3 OHM 1 1 8W 0698 3435 0698 3442 MET FLM 237 CHM 1 1 8W 0698 3442 0757 0419 R FXO MET FLM 681 OHM 1 1 8W 0757 0419 0757 1094 R FXD MET FLM 1 TK OHM 1 1 88 0757 1094 0757 1094 R FXD MET FLM 1 47K OHM 1 1 8W 0757 1094 0757 1094 R FXD MET FLM 1 47K OHM 1 1 8W 0757 1094 0698 3442 MET FLM 237 OHM 1 1 84 0698 3442 0757 0400 R FXD MET FLM 90 9 OHM 1 1 8W 0757 0400 0757 0400 R FXD MET FLM 90 9 OHM 1 1 8W 0757 0400 0698 7608 R FXD FLM 192 5 OHM 0 5 1 8 0698 7608 0698 7607 FLM 122 2 OHM 0 25 1 88 0698 7607 0698 7608 R sFXD FLM 192 5 OHM 0 5 1 8W 0698 7608 0698 7607 R FXD FLM 122 2 OHM 0 25 1 8 0698 7607 0698 5194 MET FLY 71 15 OHM 0 25 1 8 0698 5194 0698 5401 MET FLM 247 50 OHM 0 25 1 8W 0698 5401 0698 5196 R FXD 96 25 CHM 0 252 1 8W 0698 5196 0698 5192 R FXD MET FLM 61 11 OHM 6 25 1 8W 0698 5192 0698 3435 R FXD MET FLM 38 3 OHM 1 1 8 0698 3435 0698 5196 R FXD FLM 96 25 OHM 0 25 1 8W 0698 5196 0698 5194 R FXD MET FLM 71 15 OHM 0 25 1 8W 0698 5194 0698 5196 R FXD MET FLM 96 25 OHM 0 25 1 8W 0598 5196 0698 5192 R FXD MET FLM 61 11 OHM 0 25 1 8W 0698 5192 0698 5401 R FXD MET FLM 247 50 OHM 0 25 1 84 0698 5401 0698 3445 R FXD MET FLM 348 OHM 1
127. For products returned to HP for warranty service Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to HP from another country LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation out side of the environmental specifications for the product or improper site preparation or maintenance NO OTHER WARRANTY IS EXPRESSED OR IMPLIED HP SPECIFICALLY DISCLAIMS THE IM PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES HP SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSE QUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEOR Y ASSISTANCE Product maintenance agreements and other customer assistance agreements are available for Hewlett Packard products For any assistance contact your nearest Hewlett Packard Sales and Service Office Addresses are pro vided at the back of this manual NG AND SERVICE MANUAL OPERAT I NETWORK ANALYZER 8407A Serial Prefix 1144A This manual applies directly to HP Model 8407A Net work Analyzer having serial prefix number 1144A Serial Pref
128. L VOLTMETER x ud VERTICAL INPUTS CONDITIONS FOR WAVEFORMS AND DC VOLTAGES ON SCHEMATICS a Connect equipment as shown in test setup b Set 8407A controls as follows DISPLAY REFERENCE CAL Zero dB at top switch positions DISPLAY REFERENCE 10 dB step switch and 1 dB step switch at top position 0 dB REF CHANNEL LEVEL ADJ Middle position AMPL VERNIER Midrange PHASE VERNIER Midrange c Set sweep oscillator controls for single frequency CW operation at 1 MHz d Adjust sweep oscillator RF for 20 mV P P at REF CHANNEL DIRECT input tee as read on oscilloscope e On Model 8412A Plug in set controls as follows MODE to DUAL AMPL DB DIV to 10 PHASE DEG DIV to 90 PHASE OFFSET polarity to DEGREES to zero INTENSITY for moderate trace intensity Figure 7 2 Schematic Diagram Notes 2 of 2 Aus LOOSEN TWO BOLTS AND CONVERTERS SWING OUT Rot RENE RISEN APE RERGE LOOSEN TWO SCREWS AND FRONT PANEL SWINGS OUT PRPS OPE PSE w WEF CAR LEWES ACTA Bag SYN hx RR k Figure 7 3 Cabinet Dissassembly for Maintenance PI A6 7 6 5 4 Al3 All AlO A8 AT TOP 20V ADJ 20V ADJ J7 JIO AI7RI6 C2 C AI7R7 Bits 3 0 AMPLIS AtS LO MIXER at FRAGE DSC u ATOR 9 LL
129. LE IF ATTENUATOR ASSY 08407 60011 AT 08407 60103 REBUILT 08407 60011 REQUIRES EXCHANGE 08407 60103 0180 2206 C FXD ELECT 60 UF 10 6VDCW 1500606X9006B2 ATC2 0180 1 746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 ATC 3 0180 0228 C FXD ELECT 22 UF 10 15VDCW 1500226X901582 DYS 0180 1746 ELECT 15 UF 10 20VDCW 0180 1746 ATC5 0180 1743 C FXO ELECT 0 1 UF 10 35VOCW 1500104X9035A2 DYS ATCO 0180 1743 C FXD ELECT 0 1 UF 10 35VDCNW 150D104X9035A2 DYS ATC 0180 1743 C FXD ELECT 0 1 UF 10 35VDCW 15001 04X9035A2 DYS 0180 1743 ELECT 0 1 UF 10 35VDCW 1500104X9035A2 DYS 9 0180 2206 C FXD ELECT 60 UF 10 5VDCMW 1500606 X9006B2 10 0180 1746 C FXD ELECT 15 UF 10 20VDCNW 0180 1746 11 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 17 6 12 0180 1746 ELECT 15 UF 10 20VDCW 0180 1746 2 0180 1743 C FXO ELECT 0 1 UF 10 35VOCH 150D104X9035A2 0YS ATCL4 0180 1743 C FXD ELECT 0 1 UF 10 35VDCW 1500104X9035A2 DYS ATC15 0180 0291 C FXD ELECT 1 0 UF 10 35VDCW 1500105 9035 2 0 5 A7TC16 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 ATCIT 0180 1746 C FXD ELECT 15 UF 10 20VOCW 0180 1746 ATC18 0180 1746 C FXD ELECT 15 UF 10 20VDCW 0180 1746 ATC19 0180 1743 C FXD ELECT 0 1 UF 10 35VDCW 150D104X9035A2 DYS 7
130. LER The frequency doubler consists of diode bridge CR9 CR12 and differential amplifier Q7 and Q8 The square wave pulse at A10TP4 is rectified by the diode bridge A negative pulse is coupled through C17 to the base of Q7 This pulse passes through Q7 and Q8 and is applied to 96 as a positive going gate pulse This pulse coincides with a negative peak from the full wave rectifier Also a negative pulse from the diode bridge passes through C18 and is applied to Q8 base This pulse is inverted through Q8 forming a positive pulse to Q6 gate This gives a positive going pulse train at the gate of Q6 which corresponds in timing with the peaks of the pulse train from the full wave rectifier FULL WAVE RECTIFIER The 278 kHz reference channel signal at test point 7 is effectively full wave rectified through Q10 and the associated diodes The negative going portion of the sine wave is rectified by CR2 The positive going portion of the sine wave is inverted through Q10 making it negative going This negative going signal is detected by CR3 The resultant waveform at test point 6 is a series of negative peaks with a repetition rate twice the frequency of the original 278 kHz sine wave CR5 and CR6 provide temperature compensa tion SAMPLE AND HOLD Q6 samples the peak amplitude of the signal at the source and produces a dc output at Each gate pulse A10TP3 occurs coincident with a negative peak at 10 6 The peak amplitude at A10TP6 v
131. LIFIER ATTENUATOR OVERLOAD AGC DETECTOR IF A2FRONT 14 15 20 21 3 6us PANEL ASSY VERNIER 9 CONTROL 3 65 3 Gus 9 12 ue TENS VERNIER A A 0 01V DISPLAY SWITCH ANNA MV 0 0 P P REFERENCE 53 DISPLAY dB UNITS PLO 99 722 MHz 10dBm NOMINAL OUT Jl PEAK DETECTOR p POWER x SPLITTER LO TO 10 3 CONV AMPLIFIER 0 Bus ox cEO ONUS V V V 10 11 3 615 A2 FRONT PANEL ASSY DRIVER b 0 14V 17 DRIVER i Pv D 8VDC OVERLOAD A7 IF ATTENUATOR TEN S R PROGRAMMABLE ATTENUATOR RLOAD 10 ECTOR 14 15 20 21 A2 FRONT PANEL ASSY TENS SWITCH 33 DISPLAY REFERENCE dB TENS A14 PHASE LOCKED OSCILLATOR VARIABLE 17 ATTENUATOR C OSCILLATOR 200MHz OSCILLATOR FREQUENCY 199 722MHz 630mV P P A2 FRONT PANEL ASSY SEARCH AMPL OSCILLATOR 277 TT8KHz 3 6us 3V P P A12 REFERENCE CHANNEL BANDPASS FILTER BANDPASS A2A 50 PHASE FILTER SHIFTER WIDTH 10KHz CF 278KHz LN O PHASE VERNIER REF CHANNEL LEVEL o UN CAL REDUCE INPUT RATIO 3 6us A9 TEST CHANNEL A2 FRONT PANEL ASSY BANDPASS FILTER A2A2 BANDPASS FILTER bus WIDTH 10KHz PHASE CF 278KHz AMPLITUDE VERNIER CONTROL DISPLAY REFE
132. LVW Y SOY POLY SORY PORY SHOLSISNYYL vna AYOLOWI 03123136 NMOHS 39v110A ONY SW804JAVM NIVISO 4 1145 1541 ONY SNOILIQNOO 1N3W340SV3N Z 340913 335 1 S310N p26 7829 7185 19100 299 Jauueu 1581 9 08 60009 207901 13141 IdW 29v HNNVH2 S3L8V O 1 12 Model 8407A Appendix I A17 Figure 7 34 Parts Location for Diode Board A5 and Power Supply A17 Change H Serial No 959 00245 and Below I 13 Model 8407A Appendix 41843554 40 l LLY SV DL NI 340 1103 SIN3NOd O2 H3H10 40 SNOLLYMOIS30 6 w3 wnw AtaNass 530012 O3ivi gaagY ayy 531196365 lt 03 17100 NIHA IN SNOILYNDIS3Q 324353338 NAOHS 5Y 313 402 i 82 mojag pu 600 6 o muewog GY prog opoig pun 9610 0081 6 914 185 Assy 2911998 pue Atddng 19 0 w1099 GG ON 10149S 8unuo v 4omoq 98 4n81 2 61 m lt lt 0v0183A0 ld LX 90 0 4 Ab 21 i 4 04 i E 1 i 01 10938 i 531815 011 10938 i z w e SGEN 10 i Id i Od 0 4 62 i ix TEPS aan
133. M 1 1 8 0757 0428 A2A1R6 0757 0424 R FXD MET FLM 1 10K OHM 1 1 8W 0757 0424 A2A1RT 0757 0199 R FXD MET FLM 21 5K OHM 1 1 8W 0757 0199 A2A1R8 0698 0084 R FXD MET FLM 2 15K OHM 1 1 8 0698 0084 See introduction to this section for ordering information 6 2 Model 8407A Reference Designation A2A1R9 A2A1R10 A2A1R11 2 2 2 2 2 2 1 2 2 2 2 2 3 A2A2C A2A2C5 A2A2C6 A2A2J1 A2A2J2 A2A2J3 2 201 2 202 24203 2 2 A2A2R3 AZA2R4 A2A2R5 A2A2R6 AZA2R7 A2A2R8 A2A2R9 A2A2R10 A2A2R11 A3 A3 0698 3440 0751 0280 0757 0279 08407 60053 08407 60116 0180 0291 0160 3060 0160 3060 0160 3490 0180 0291 0150 3060 1250 0828 1250 0828 1250 0828 08407 00056 1853 0020 1854 0345 18 54 0345 0757 0443 0757 0290 0698 3154 0757 0398 0698 2445 0598 3491 0698 0082 0598 0082 0698 3440 0757 0398 06 98 3449 08407 60093 08407 60101 0160 3491 0180 0291 0160 2264 0180 0291 0180 0291 0160 3060 0160 3060 0160 3491 0180 0291 0160 3490 0160 3490 0160 2259 0180 0291 0160 0134 0180 0291 0180 0291 0160 3490 0160 2219 0180 0197 0160 3076 0140 0184 0180 0291 0180 0291 0160 0174 0180 0291 0160 0174 0180 0291 0140 0210 0160 0174 0180 0291 0160 0174 0160 2437 0160 2437 0160 2437 1901 0450 1901 0044 1250 1205 1250 1205 1250 1205 1250 1205 Table 6 2 Replaceable Parts R FXO MET FLM 196 OHM 1 1 8
134. NETWORK ANALYZER NETWORK ANALYZER 8407A HEWLETT hp PACKARD SAFETY This product has been designed and tested according to International Safety Requirements To ensure safe operation and to keep the product safe the information cautions and warnings in this manual must be heeded CERTIFICATION Hewlett Packard Company certifies that this product met its published specifications at the time of shipment from the factory Hewlett Packard further certifies that its calibration measurements are traceable to the United States National Bureau of Standards to the extent allowed by the Bureau s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Hewlett Packard product is warranted against defects in material and workmanship for a period of one year from date of shipment During the warranty period Hewlett Packard Company will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated by HP However warranty service for products installed by HP and certain other products designated by HF will be performed at Buyer s facility at no charge within the HP service travel area Outside HP service travel areas warranty service will be performed at Buyer s facility only upon HP s prior agreement and Buyer shall pay HP s round trip travel expenses
135. OJONUANIY J 1 66 2 ANSIA NAOHS SY 31314402 Juv SLNANOdNOD 83 10 40 SNOILYNDIS3Q SI LY ATaw3SS 40 14 8 wWagwns 184355 530012 NI NOIL YHOISIC 1705 31 3888 JY 3I T0W355Y 3 17100 NIHLIA SNOLLYNDIS3O 328343438 2926 31g 7185 41 ejgearueJ504g V108 5 015 8p 0 1081 02 13 4 QU aP Nous WANALLY 292 894 cawwyiiooud 525 90 014 S39V110A SWBHOJ3AVM 8 40135 1531 ONY NX SNO11I0N02 8 5 3 8042 L 340913 335 2 39VIS V NI 580220 9NIQVOT43AO 5531 STVNDIS S01vnN3lLv YOLVONALLY TYOIOSNINIS ZHY 812 PURI 2 gx 88 _ sp uo ol na SINIOd 1531 IV STYNOIS S310N ba eiecit 10 AX AQ AOZ wo 0 ip 22 002 Ym u Cu ua 22 814 st 4 E a 09 961 091 96 2 i wp 1 6 vas o w t Se SNOMVNDIS30 32 383333 oet EEA DE i er oT 55 j 1 0115 E 129 Sty i 0295 5 115 T ft i I 12 E a ME 77 d d AST J
136. OM 2N3704 1854 0071 AL4Q11 1854 0071 TSTR SI NPN OSELECTEO FROM 2N3704 1854 0071 1954 0071 TSTR SI NPNESELECTED FROM 2N3704 1854 0071 A1l4Q12 A14213 1854 0071 51 NPNLSELECTED FROM 2N3704 1854 0071 A14Q14 1854 0441 TSTR SI 285179 14215 1854 0471 TSTR SI NPN 1854 0471 A14016 1854 0071 TSTR SI NPNLSELECTED FROM 2N3704 1854 0071 1451 0698 7255 R FXD 6 19K OHM i 8W 0698 7255 Al4R2 0698 7255 R FXD FLM 6 19 OHM 2 1 8 0598 7255 A1433 0698 7248 R FXD FLM 3 16K OHM 2 1 8W 0698 7248 1466 0698 7248 R FXD FLM 3 16 OHM 2 1 8 0698 7248 ALGR5 0698 7265 FLM 16 2K OHM 2 1 8W 0698 7265 R FXD OHM 0698 7265 A14R6 0698 7265 FLM 16 2K 1 8W 14 7 0698 7255 R FXD FLM 6 19K OHM 2 1 8W 0698 7255 88 0698 7 255 R FXD FLM 6 19K OHM 2 1 8W 0698 7255 1 449 0698 7250 R FXD FLM 3 83K OHM 2 1 8W 0698 7250 Al4R10 0698 7250 R FXD FLM 3 83K OHM 2 1 8W 0698 7250 See introduction to this section for ordering information 6 14 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Mfr Code Reference Designation HP Part Number Qty Description Mfr Part Number 14 11 0598 7257 7 5 OHM 2 1 BW 0698 7257 18 12 0698 7237 FLM 1 1K OHM 2 1 84 0698 7237 14513 0698 7252 R F
137. P Part No 9170 0016 Recommended replacement is 9170 0847 Page 6 17 Table 6 1 Change 1621 Z2 Z3 and Z4 to HP Part No 9170 0016 Recommended replacement is 9170 0847 CHANGE E Page 6 9 Table 6 1 Change A8C12 and A8C13 to HP Part No 0180 1746 C FXD ELECT 15 UF 10 20 VDCW Add A8C18 HP Part No 0160 2667 C EXD 36 PF 500 VDCW Change A8R4 to HP Part No 0698 3150 MET FLM 2 37K OHM 1 1 8W Change A8R20 to HP Part No 0757 0290 R FXD MET FLM 6 19K OHM 1 1 8W FACTORY SELECTED 2 Model 8407A Figure 7 14 Parts Location for Phase Locked Oscillator A14 Change A Serial No 983 00446 thru 1103400605 Appendix I I 3 Appendix 1 Model 8407A CHANGE E cont d Page 6 9 Table 6 1 cont d Delete A8R27 Page 6 11 Table 6 1 Change A11C12 and A11C13 to HP Part No 0180 1746 C FXD ELECT 15 UF 10 20 VDCW Page 6 12 Table 6 1 Delete A11R29 Change A11T1 to HP Part No 9100 2854 Page 6 13 Table 6 1 Change A13R28 to HP Part No 0757 0416 R FXD MET FLM 511 OHM 1 1 8W Recommended replacement is 0757 0401 100 OHMS Page 6 14 Table 6 1 Change A14C25 to HP Part No 0160 2255 C FXD CER 8 2 0 25 PF 500 VDCW Delete A14C34 A14C38 Delete 141 11 Delete A14Q16 Page 6 15 Table 6 1 Delete A14R56 A14R60 Page 6 17 Table 6 1 Change A17CR4 and CR8 to HP Part No 1884 0073 Recommended replacement is 1884 0012 Change A17R1 and R10 to HP Part 0812 0017 R FXD WW 0
138. PASS NOMINAL IN q LOW PAS FILTER XC FILTER 150MHz cS 200MHz LO OUT LOW PASS FILTER fc 120MHz BANDPASS FILTER STEP WIDTH 10KHz ATTENUATOR CF 278KHz A2 FRONT PANEL ASSY OVERLOAD OVERLOAD 419 DETECTOR BANDPASS FILTER WIDTH 10KHz CF 278KHz 3 6115 0 23V P P 5 LO MIXER Al4 PHASE LOCKED OSCILLATOR MIXER PLO PHASE LOW PASS VARIABLE 17 22 MHz 1048 NOMINAL l OUT JI ATTENUATOR SEEDS aC OSCILLATOR OSCILLATOR A13 ALC AMPLIFIER 199 722MHz PEAK SEARCH DETECTOR 2 POWER PHASE OSCILLATOR iS SPLITTER DETECTOR 277 778KHz 10 DET IN 21 c 0 8 us 0 8us 3 6us 630mV P P 3v P P A2 FRONT PANEL ASSY A12 REFERENCE CHANNEL 0 BANDPASS FILTER All REF AGC AMPLIFIER 2 1 55 2 1 XPPHASE OUT 1 FILTER 3 SHIFTER WIDTH 10KHz A 5 STEP iF ATIENUATOR GC CF 278KHz 5 N WV A2 FRONT PANEL ASSY 2 12 PP VERNIER 2 A2 FRONT PANEL 55 CONTROL DRIVER Al FRONT PAINEL SW ASSY A10 AGC FEEDBACK SAMPLING PEAK DETECTOR 1 2V 1e LO A9 TEST CHANNEL 2 id PANEL ASSY BANDPASS FILTER A2A OVERLOAD A7 IF ATTENUATOR 19 7V gt 8VDC NO OVERLOAD lt 8VDC OVERLOAD BANDPASS FILTER WIDTH 10KHz CF 278KHz TENS PROGRAMMABLE AM A8 TEST AGC AMP
139. R FXD MET FLM 21 5K OHM 1 1 8W 0757 0199 0757 0199 R FXD MET FLM 21 5K OHM 1 1 8 0757 0199 See introduction to this section for ordering information Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Reference Designation HP Part Number Oty Description Mfr Part Number 0757 0459 R FXD MET FLM 56 2 OHM 1 1 8W 0757 0459 0698 3450 R FXD FLM 42 2K OHM 1 1 84 0698 3450 0757 0422 R FXD MET FLM 909 OHM 1 1 8W 07571 0422 0757 0280 R FXD MET FLM IK OHM 1 1 8W 0757 0280 0757 0316 R FXD MET FLM 42 2 OHM 1 1 8 0757 0316 0698 3159 R FXD MET FLM 26 1K OHM 1 1 8W 0698 3159 0757 0290 R FXD FLM 6 19 OHM 1 1 8W 0757 0290 0698 7250 R FXD FLM 3 83K OHM 2 1 8W 0698 7250 9170 0857 BEAD SHIELDING RECOMMEND REPLACEMENT 56 590 65 3B 9170 0847 BEAD SHIELDING 56 590 65 38 9170 0847 BEAD SHIELDING RECOMMENDED REPLACEMENT MIXER DOUBLE BALANCED 56 590 65 38 1051 48 105148 08507 60092 08407 60092 TEST CHANNEL CONVERTER ASSY ORDER 08407 60154 A3 A4 E W10 MATCHED PAIR WI THOUT EXCHANGE REBUILT 08407 60092 amp 08407 60093 A3 4 MATCHED PR INCL W10 08407 60040 MATCHED 1 0 TEST CABLE REQUIRES EXCHANGE 08407 60101 08407 60101 0180 0291 C FXD ELECT 1 0 UF 102 35V0CW 1500105 9035 2 0 5 0160 3491 C FXD CER 0 47 UF 20 SOVDCW
140. R FXO FLM 100 OHM 1 1 8W 0757 0401 10813 0698 3153 R FXD MET FLM 3 83K OHM 1 1 8 0698 3153 10 14 0698 0083 R FXD FLM 1 96K OHM 1 1 8W 0698 0083 See introduction to this section for ordering information 6 10 Model 8407A Replaceable Parts Table 6 2 Replaceable Parts Reference Designation HP Part Number Qty Mfr Part Number Description A10R15 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W 0757 0442 ALORLS 0757 0280 R FXO MET FLM OHM 1 1 84 0757 0280 A10R17 06 98 0082 R FXD MET FLM 464 OHM 17 1 8W 0698 0082 10418 0598 3153 MET FLM 3 83K DHM 1 1 8W 0698 3153 810819 0751 0317 R FXD MET FLM 1 33K OHM 1 1 8W 0757 0317 410420 0698 3404 R FXD MET FLM 383 OHM 1 1 2W 0698 3404 AlOR21 0598 3155 R FXD MET FLM 4 64K OHM 12 1 8W 0698 3155 12 22 0757 0424 R FXD MET FLM 1 10K OHM 1 1 8W 0757 0424 A10R23 0757 0438 R FXD FLM 5 11 OHM 1 1 8W 0757 0438 1242 0757 0230 R FXD 1K OHM 1 1 BW 0757 0280 A10R25 0698 0083 R FXD MET FLM 1 96K OHM 1 1 BW 0698 0083 ALDR26 0698 3154 R FXD MET FLM amp 22K OHM 1 1 8W 0698 3154 A10R27 0698 3155 R FXD MET FLM 4 64K OHM 1 1 8W 0698 3155 ALOR28 0683 3055 1 R FXD COMP 3 MEGOHM 5 1 4W C8 3055 A10k29 0698 3153 R FXD FLM 3 83K OHM 18 1 8 0698 3153 412432 0757 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 10831 0757 0199 R FXD FLM 21 5 OHM 1 8N 0757 0199 ALOR32 0698 3157 R FXD MET FLM 19 6K OHM 1 8W 0698 3157 A1
141. R5 R20 21 5V CR6 6 C4 4 7 5 17 Figure 7 35 Supply 17 Diode Board 5 Schematic Diagram 7 35 Model 8407A 1 1 Appendix APPENDIX MANUAL CHANGES INTRODUCTION I 2 To adapt this manual to instruments with serial numbers listed in the table below make the indicated manual changes Serial Prefix or Number 924 00101 thru 924 00110 A thru M 9924 00111 thru 92400130 A thru L 944 00131 thru 944 00150 A thru K 948 00151 thru 948 00165 948 00166 thru 948 00175 9909 00176 thru 959 00245 9659 00246 thru 965 00315 Make Manual Changes A thru A thru H A thru G CHANGE A Page 6 14 Table 6 1 I 3 Information for adapting this manual to in struments with serial numbers not listed in the table below may be included in a yellow MANUAL CHANGES insert supplied with this manual Infor mation about serial numbers not covered in any of these ways can be obtained from the nearest Hewlett Packard office Serial Prefix or Number 972 00316 thru 983 00386 thru 1103400446 thru 1103A00506 thru 1103A00555 Make Manual Changes 1103A00581 thru 1103A00605 1103A00556 thru 1103A00580 Change 14 26 to HP Part No 0140 0197 FXD 180pF 300 VDCW Delete A14C39 Delete A14L12 Change A14R21 to HP Part No 0698 7260 R FXD 10K OHM 2 Delete A14R55 1 Appendix I Model 8407A CHANGE
142. RENCE dB UNITS lV Service 3 6us p AWA 3V P P ra 3 615 NW uvas ni 24 REFERENCE CHANNEL OUTPUT 3VP P 0 5 V P P OUTPUT TEST CHANNEL OUTPUT 3 1 0V P P Figure 7 7 Detailed Block Diagram 7 7 Service 7 8 SERVICE SHEET 1 A16 VTO Amplifier BUFFER AMPLIFIER Q1 forms a grounded base RF amplifier Z1 suppresses spurious oscillations Transformer T1 forms the output load for Q1 coupling the 200 to 310 MHz RF signal to the bandpass filter BANDPASS FILTER A multisection bandpass filter is formed by a group of parallel resonate and series resonate circuits The passband is from 200 to 310 MHz LIMITING AMPLIFIER Q2 forms a grounded base RF amplifier followed by three grounded emitter stages Q3 Q4 and Q5 Transformer T2 changes from single ended to push pull drive for push pull ampli fiers Q6 and Q7 Transformer is a conventional push pull output transformer with a low impedance output winding 150 MHz HIGH PASS FILTER Capacitors C22 and C23 and inductors L6 and L7 form a high pass filter This filters any harmonics or mixing products below 150 MHz Model 8407A Model 8407A R26 R25 16 04 Q2 p R6 C29 dm L O 19 C 2 T C26 ORB C9 L3 RI2 CIO RIT 5 RI Figure 7 8 Parts Location for V TO Amplifier A16 A1
143. Sweep Oscillator HP 8601A or Two Double Shielded Cables Part of 8690B 8698B Accessory Kit Plug In Indicator HP 8412A Two 50 Ohm Terminations included Dc Digital Voltmeter HP 3439A 3443A with 84077 A Power Splitter HP 11652 60009 0 120 dB Step Attenuator Part of Accessory Kit HP 355D Part of HP 11652A Accessory Kit PROCEDURE NOTE When using an 8412 Phase Magnitude Display Unit perform the low level adjustment as follows Make this adjustment with as much precision as possible Adjust the output power level from the sweep oscillator and the 8407A REF CHANNEL LEVEL ADJ DISPLAY REFERENCE 1 dB step and AMPLITUDE VERNIER control to obtain a zero volt indication on the DVM with the 10 dB step DISPLAY REFERENCE switch at four positions down from the top 40 dB Move the 10 dB step DISPLAY REFERENCE switch to the bottom position 80 dB Adjust 8412A front panel AMPL CAL LOW LEVEL control for 2 00 Vdc on DVM Repeat this adjustment until the zero and 2V indications are as precise as possible Model 8407 A Maintenance Table 5 3 Performance Test cont d TEST PROCEDURE 5 a Connect equipment as shown in test setup Connect the reference channel input to cont d the 8407A REF CHANNEL ATTEN input Connect the step attenuator between the power splitter and 8407A TEST CHANNEL DIRECT input Set the 0 120 dB attenuator to 80 dB Set 8407A REF CHAN LEVEL ADJ switch to the middle position b Set the 8407
144. T Net 32 Ib 14 6 kg Shipping 39 lb 17 8 kg DIMENSIONS 1 1 4 in high 18 3 8 in deep 16 3 4 inches wide Model 8407A 1 16 ACCESSORIES AVAILABLE 1 17 Two accessory kits are designed specifically for the 8407A and are as follows 1 11652A Reflection Transmission Kit 2 11654A Passive Probe Kit 1 18 Other accessories available are the 1123A Active Voltage Probe the 10020 Resistive Divider Probe and the 1110A Clip on Current Probe 1 19 The 11652A Reflection Transmission Kit facilitates measurement of return loss VSWR complex impedance and reflection coefficient as well as transmission magnitude and phase Included in the kit are the Model 8721A directional bridge a precision termination and low leakage cables 1 20 The 11654A Passive Probe Kit allows prob ing directly into circuits with minimum distur bance Measurements may be made of either volt age or current with the probe kit 1 21 The 1123A Active Voltage Probe is valuable for probing low level signals accurately This probe has a 220 MHz bandwidth 3 dB Two probes are recommended for the 8407A 1 22 The 10020A Resistive Divider Probe allows matching various source impedances Six division ratios from 1 1 to 100 1 are provided Two probes are required for the 8407A 1 23 The 1110A Clip on Current Probe is conven ient for simply clipping on circuit leads for cur rent measurements Frequency range of the probe is up to
145. T 1 0 UF 10 35V0CW 05330 80003 08407 60022 A2 A2 2 1 08407 60144 0180 0291 08407 60144 15001 05X9035A2 DYS 2 1 1901 0025 DIODE SILICON 100MA 1V FD 2387 A2CR2 1901 0025 DIDDE SILICON 100 1 FD 2387 A2CR3 1902 0041 DIODE BREAKDOWN 5 11V 52 210939 98 241 1251 1604 CONNECTOR PC EDGE 1 ROW 22 CONTACT 252 22 30 310 1251 1636 CONNECTOR SINGLE MALE CONTACT 1251 1636 201 1853 0020 TSTR SI PNP SELECTED FROM 2N3702 1853 0020 292 1853 0001 TSTR SI PNP SELECTED FROM 2 1132 1853 0001 293 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W 0757 0442 A2R2 0757 0465 R FXO FLM LOOK OHM 1 1 8W 0757 0465 3 0698 3443 R FXD MET FLM 287 OHM 1 1 8W RECOMMENDED REPLACEMENT R FXD MET FLM 511 OHM 1 1 88 R FXD MET FLM 10 0K OHM 1 1 8W R FXO MET FLM 1 96K OHM 1 1 8W 0698 3443 2 A2R5 A2R6 0757 0416 0757 0442 0698 0083 0757 0416 0757 0442 0698 0083 A2RT 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W 0757 0442 A2R8 9757 0465 R FXD MET FLM 100K OHM 1 1 8W 0757 0465 A2R9 0698 3628 R FXD MET OX 220 OHM 5 2 0698 3528 2 10 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W 0757 0442 2 11 0757 0442 R FXD MET FLM 10 0K OHM 1X 1 8W 0757 0442
146. TR SI PNP SELECTED FRGM 2N3702 28450 1853 0020 AL3Qo 1353 0020 TSTR SI PNP SELECTED FROM 2N3702 28480 1853 0020 AL3Q7 1854 0071 10 TSTR SI NPN SELECTED FROM 2N3704 28480 1854 0071 1328 1853 0020 TSTR SI PNP SELECTED FROM 2 323702 28480 1853 0020 1 0757 0346 1 R FXO MET FLM 10 OHM 1 1 8W 284 80 0757 0345 13 2 9757 0316 1 R FXD MET FEM 42 2 OHM 1 1 BW 28480 0757 0316 41353 0757 0422 1 MET FLM 909 OHM 12 1 8w 28480 0757 0422 AL3R4 0698 3102 2 R FXD MET FLM 237 OHM 15 1 2W 28480 0698 3102 A1345 06598 3447 1 R FXD MET FLM 422 OHM 1 1 8wW 284 80 0698 3447 A13R6 2583 1025 1 R FXD COMP 1000 OHM 5 1 4 01121 CB 1025 1357 0698 3102 R FXD MET FLM 227 OHM 1 1 2wW 284 80 0698 3102 A13R8 0698 0CR4 2 R FXO FLM 2 15K OHM 1 178 28480 0698 0084 1 3 9 0698 3432 2 R FXD MET FLM 26 1 DHM LE 1 8W 284 B0 0698 3432 Al3 l2 0757 0280 2 R FXO MET FLM LK OHM 1 1 8W 28480 0757 0280 413411 0698 3432 R FXD MET FLM 26 1 OHM 1X 1 28480 0698 3432 A13R 12 06 98 0084 R FXD MET 2 15K OHM 1 1 8M 28480 0698 0084 AL3 lt 13 0757 0400 2 R FXD FLM 90 9 OHM 1 1 8w 28480 0757 0400 413914 9757 0400 RzFXD MET FLM 90 9 OHM 12 1 8W 28480 0757 0400 134515 0757 0230 R FXD MET FEM OHM 12 1 88 28480 0757 0280 A13k16 0757 0279 2 MET FLM 3 16 CHM 14 1 8w 28480 0757 0279 AL3 17 0757 0416 1 R FXD MET FLM 511 OHM 1 1 88 28480 0757 0416 A133218 0757 0401 1 R FXD MET FLM 100 OHM 1 1 8w 28480 0757 0401 5419
147. UH 5 9140 0137 1021 1854 0071 TSTR SI NPNC SELECTED FROM 2N3704 1854 0071 1853 0020 1853 0020 1854 0221 1855 0050 3N138 TSTR SI PNP SELECTED FROM 2 3702 TSTR SI PNP SELECTED FROM 2N3702 TSTR SI NPN REPL BY 2N40441 TSTR SI FET DUAL TSTR SI 1002 1853 0020 1903 1853 0020 1004 1854 0221 1095 1855 0050 41296 1855 0332 997 1854 0009 TSTR SI NPN 2N709 9098 1854 0009 51 NPN 2 709 1099 1854 0009 TSTR SI NPN 2N709 12010 1854 0071 TSTR SI NPN SELECTED FROM 2 370484 1854 0071 19211 1854 0071 TSTR SI SELECTED FROM 2N3704 1854 0071 A12Q12 1854 0071 TSTR SI NPN SELECTEO FROM 2N3704 1854 0071 ALORI 0757 0280 R FXD FLM OHM 1 1 8 0757 0280 A10R2 0757 0438 R FXD MET FLM 5 11K OHM 1 1 8W 0757 0438 ALORS 0757 1078 R FXD MET FLM 1 47K OHM 1 1 2W 0757 1078 ALORS 0757 0401 R FXD FLM 100 CHM 1 1 8W 0757 0401 ALORS 0757 0280 R FXD 1K OHM 1 1 8 0757 0280 19 0757 0280 R FXD MET FLM 1K OHM 1 1 8W 0757 0280 ALOR 0698 0083 R FXO MET 1 96K OHM 1 1 84 0698 008 3 A1LOR8 0698 0083 R FXD MET FLM 1 96K OHM 12 1 8W 0698 0083 A10R9 0698 0083 R FXD MET FLM 1 96K OHM 13 1 8W 0698 0083 ALlORIO 0757 0280 R FXD MET FLM OHM 1 1 8W 0757 0280 10 11 0698 0083 R FXD FLM 1 96K OHM 1 1 8W 0598 0083 10 12 0757 0401
148. WN SILICON 21 5 5 1902 3245 A17CR2 1901 0158 DIODE SILICON 0 75 200 PIV 1901 0158 A17CR3 1901 0158 DIODE SILICON 0 75 200 PIV 1901 0158 AL7CR4 1884 0012 RECTIFIER SILICON CONTROLLED 2N3528 2N3528 Al7TCR RECOMMENDED REPLACEMENT 1 5 1902 3245 DIODE BREAKDOWN SILICON 21 5 5 1902 3245 1901 0158 1901 0158 2N3528 1 ALTCR7 17 88 DIODE SILICON 0 75 200 PIV DIODE SILICON 0 75 200 PIV RECTIFIER SILICON CONTROLLED 2N3528 RECOMMENDED REPLACEMENT TSTR SI PNP SELECTED FROM 2N3702 1901 0158 1901 0158 1884 0012 1791 1853 0020 1853 0020 AlTQ2 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 A1793 1853 0020 TSTR SI PNPLUSELECTED FROM 2N3702 1853 0020 417094 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 1854 0071 A1735 1854 0039 TSTR SI NPN 2N3053 1796 1854 0039 TSTR SI NPN 2 3053 1741 0812 0020 R FXD WwW 0 39 OHM 57 0812 0020 ALTR2 0757 0280 R FXD FEM LK OHM 1 1 8 0757 0280 1743 0757 0442 R FXD MET FLM 10 0K OHM IZ 1 8W 0757 0442 ALTRG 06 8 0083 R FXD MET FLM 1 96K OHM 1 i Bw 0698 0083 41745 0698 0083 R FXD FLM 1 96K OHM 1 1 8W 0698 0083 AlT7TR6 0757 0442 R FXO MET FLM 10 0K OHM 1 1 8 0757 0442 47 2100 1758 R VAR WW 1K OHM 5 TYPE V 1 2100 1758 ALTRS 0757
149. XD FLM 4 64K OHM 2 1 8W 0698 7252 ALGR14 0698 7237 1 1K OHM 2 1 8 0698 7237 6815 0698 7 260 R FXD FLM LOK OHM 2 1 88 0698 7260 Al4R16 0698 7260 R FXD 10K OHM 22 1 8W 0698 7260 AlL4R17 0698 7 250 R FXD FLM 3 83K OHM 2 1 8W 0698 7250 Al4R18 0698 7250 R3FXD FLM 3 83K OHM 2 1 8W 0698 7250 A14RI19 0698 7269 RSFXD FLM 23 7K OHM 2 1 8W 0698 7269 415520 0698 7246 R FXD FLM 2610 OHM 2 1 8W 0698 7246 AiGR21 0698 7236 R FXD IK OHM 27 1 8W 0698 7236 ALGR22 0698 7267 R EFXD MET FLM 19 6K OHM 2 1 8W 0698 7267 Al4R23 0698 7267 R FXD MET FLM 19 6K OHM 2 1 8M 0698 7267 416424 0598 7244 R FXD FLM 2 15K OHM 2 1 8W 0698 7244 Al4R25 0698 7257 R FXO FLM 7 5K OHM 27 1 8 0698 7257 Al R 26 0698 7222 R FXD 261 OHM 2 1 8W 0698 7222 Al4R2T 0698 7 267 R FXD MET FLM 19 6K OHM 2 1 8W 0698 7267 Al4R28 0698 7222 R FXD FLM 261 OHM 2 1 8 0698 7222 AL4R29 0698 7 231 R FXD FLM 619 OHM 2 1 8W 0698 7231 43 30 0698 7209 R FXD FLM 75 OHM 22 1 8 0698 7209 AL4R31 0698 7267 R FXD MET FLM 19 6K OHM 2 1 8W 0698 7267 Al4R32 0698 7222 R FXD FLM 261 OHM 2 1 8wW 0698 7222 A14R33 0698 7231 619 OHM 2 1 8W 0598 7231 Al4R34 0698 7257 R FXD FLM 7 5K OHM 2 1 8W 0698 7257 14535 0698 7222 R FXD FLM 261 OHM 2 1 88 0698 7222 AL4R36 069
150. YSTR SI NPN 1854 0471 0698 3435 R3FXO MET FLM 38 3 OHM 1 1 8W 0698 3435 0757 0819 R EXD FLM 681 OHM 17 1 8W 0757 0419 0698 3445 R FXD MET FLM 348 OHM 1 1 8 0698 3445 0757 0418 R FXD MET FLM 619 OHM 1 1 8W 0757 0418 See introduction to this section for ordering information Replaceable Parts Reference HP Part Number Designation 0757 0317 0698 3 35 0698 3442 0757 0419 0757 1094 0757 1094 0757 1094 0757 0400 0757 0400 0698 3442 0698 7608 0598 7607 0698 7608 0698 7607 0698 5194 0698 5401 0698 5196 0698 5192 0698 5196 0698 3435 0698 5194 0698 5196 0698 5192 0698 5401 0698 7607 0698 3435 0698 7607 0698 0085 0757 0274 0757 0280 0598 3445 0698 0083 0757 0621 0698 3428 0757 0419 0757 0420 0757 0316 0757 0420 0757 0394 0698 3435 0757 0317 0757 0280 0698 3153 0698 3153 0698 3159 0757 0440 0757 0317 0698 0083 0757 0280 0757 0424 0757 0463 0698 3160 0698 3150 0698 3159 0757 0280 0757 0280 0757 0316 9170 0847 9170 0847 9170 0847 9170 0847 105148 08407 60026 08407 60117 0160 0168 0160 0168 1901 0200 1901 0200 Model 8407A Table 6 2 Replaceable Parts Mfr Code Oty Description Mfr Part Number R FXO MET FLM 1 33K OHM 1 1 8
151. able to LO TO CONV connector CONVERTER AMPLITUDE AND PHASE TRACKING A3L1 A3L2 A4L 1 and A4L2 DESCRIPTION The reference and test converters are adjusted for best amplitude and phase tracking over the entire band Correct tracking is indicated by horizontal amplitude and phase traces on the 8412A PROCEDURE NOTE If the display plug in used is 8413A connect oscilloscope vertical inputs to 8413A front pane AMPL 50 MV DB and PHASE 10 MV DEG connectors Also connect Sweep Oscillator SWEEP OUT to oscilloscope external hori zontal input 0 23 Maintenance Model 8407A Table 5 6 Alignment Procedure cont d TEST PROCEDURE AND DESCRIPTION 5 a Adjust amplitude tracking as follows cont 1 Set Sweep Oscillator for widest FULL sweep width on high frequency range with an output level of 35 dBm 2 Swept amplitude display should not vary more than 0 2 dB across range If necessary adjust A4L2 A8L2 for desired response 3 Set Sweep Oscillator for widest sweep width on low frequency range 4 Swept amplitude display should vary less than 0 2 dB across frequency range If necessary adjust A4L2 and A8L2 for desired response If adjustment is made repeat amplitude tracking adjustments until no further adjustment is required If unable to obtain less than 0 2 dB variation adjust A13R27 slightly and repeat amplitude tracking adjust ment If AISR27 is adjusted recheck Local Oscillator Si
152. again This should clear trouble and allow R7 to be adjusted for 20 Vdc output 20V POWER SUPPLY The 20V supply functions identically to the 20V supply except that the 20 Vdc output is taken from the point on the circuit corresponding the ground point on the 20 V supply and the 20V dc ground return is connected to a point that corresponds to the 20V output on the 20V supply 1 34 Model 8407A A5 CRe CR4 Figure 7 34 Parts Location for Diode Board A5 and Power Supply A17 08407 6002 CRI Fl 115 VAC 2 0A SB 230 VAC 1 0A SB LINE VOLTAGE 115 OR 230 VAC 10 50 60 Hz 21 4 CR1 4 1 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN 2 IF AN OVERVOLTAGE OF gt 22VDC OCCURS AT EITHER THE 20 OR 20VDC OUTPUT THE POWER SUPPLY WILL TURN OFF APPROXIMATELY 1 5VDC OUTPUT TO CLEAR THE CONDITION TURN POWER OFF AND SET A17R7 AND A17R16 TO MIDRANGE APPLY POWER AND ADJUST FOR 20VDC ROUND IC BASE TOP VIEW 1 e 10 9 8407A Power Supply and A17 POWER SUPPLY ASSEMBLY 08407 60013 7 5K 7 0V 047 poe Py 2 6 Pl 1820 0196 T P p T 28 CR3 32 3V VERLOAD Q3 LIMITER 32 5y 1853 0020 5 RECTIFIER 33 assy 08407 60026 CRI 28 1V a P Q i Pl P O j 11 R1
153. ak between J11 20 and J11 21 If correct voltage is not present trouble is in power transformer 11 If trace is still not present suspect 8412A plug in Refer to 8412A Opera ting and Service Manual TO SHEET 3 SS Figure 7 5 Troubleshooting Tree 2 of 3 7 5 Service AMPLITUDE RANGE NOTE Be sure 8412A low level adjust ment has been made Incorrect adjustment of 8412A AMPL CAL control would give false in dication of a malfunction in 840 set DISPLAY REFERENCE 1 dB STEP switch and AMPL VERNIER control as necessary to place 8412A trace at top line of graticule Set 355D Attenuator one step at a time to 80 dB Amplitude trace on 8412A should move down 8 large graticule di visions 2 small graticule divisions Re turn the 355D attenuator setting to O dB YES DISPLAY REFERENCE 10 dB STEP Set DISPLAY REFERENCE 10 dB step NO switch to each position and 8412A display should change by 10 dB step YES FROM SHEET 2 Figure 7 5 Troubleshooting Tree 3 of 3 7 6 If trace movement is out the zero to 30 dB setting uator trouble is probably an amplifier stage Conne and note peak to peak 8 2 XA7 2 XA7 11 IF TEST OUT on rear p gain of each stage Insert uation with 355D attenu serve waveform at each st late gain Compare gain which stage is saturatin signal conditions Check for correct signal voltage to IF attenuator relays from front panel
154. aries with varying signal levels at the reference channel input DC AMPLIFIER The dc voltage level at A10TP1 is amplified by a differential amplifier Q4A and Q4B driven by two FET s Q5A and Q5B Another differential amplifier Q2 and Q3 drives emitter follower Q1 The dc output from Q1 emitter is the automatic gain control voltage used to level both test and reference channels as well as drive the REF CHANNEL LEVEL meter driver circuit 7 22 Model 8407A A10 Figure 7 22 Parts Location for AGC Feedback Amplifier A10 All P O _ 10 AGC FEEDBACK AMPLIFIER 08407 60010 R20 383 CRT C13 12 1V 6 8 l8us x n i a 1 CONTROLLED 9 AMPL CHANNEL gt 10 gt VAT Ul R21 SIGNAL 7 4600511 i C15 220 pF 20V T9 i 20V lt 4 20V 1 8 us Q10 5 V 1854 0071 RIA 19000 22 R13 R15 R18 3830 10K 3830 EK i uuu 8407A AGC Feedback Amplifier Ser Pre 1144A NOTE SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS ANI SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOW MOSFET BASE DIAGRAM BOTTOM VIEW 3N138 SUBSTRATE O DRAIN SOURCE F e a S R39 3160
155. ase as the original RF signals These two 278 kHz signals are applied to the plug in display where the phase and amplitude information is detected and displayed Operating power for the plug in display is furn ished by the 8407A 1 6 The network analyzer automatically tracks the reference input signals In sweep mode the sweep width is limited only by the RF signal source being used The 8407A is specifically de signed for use with the HP Models 8601A and 8690B 8698B Sweep Oscillators The 8601A sweeps the range between 0 1 and 110 MHz and the 8690B 8698B sweeps the range between 0 4 and 110 MHz 1 7 The RF signal applied to the reference input of the 8407A is used to actuate the automatic tuning as well as develop the automatic gain con trol AGC signal for both reference and test chan nels A reference channel level meter continuously monitors the reference signal and indicates whether the level is in the range required for making measurements 1 8 Controls on the Model 8407A include a refer ence channel level step attenuator display refer ence amplitude offset attenuator and amplitude and phase vernier adjustments The display refer ence attenuators allow a reference level trace to be placed at a convenient position on the plug in dis play 1 9 The complete list of specifications for the Model 8407A Network Analyzer is given in Table 1 1 Specifications that include the plug in display unit performance are given
156. at 40 MHz for CW operation Connect BNC short to directional bridge LOAD connector Set 0 120 dB step attenuator to 30 dB Set oscilloscope to most sensitive range Adjust sweep oscillator RF output for a four centimeter P P trace on oscilloscope This is the reference level and represents a reflection coefficient at the bridge LOAD port of 1 0 b Set 0 120 dB step attenuator to zero dB Disconnect the BNC short from bridge LOAD port and connect LOAD port of bridge to 8407A input ports one at a time When measuring VSWR of one port connect a 50 ohm termination to the other port of the same channel The table below gives the oscilloscope indication limits for a VSWR of 1 08 with the uncertainty due to the 40 dB directivity of the directional bridge Oscilloscope Indication P P VSWR of Port is Within Tolerance Less than 4 cm Yes 4 to 8 cm Uncertam Greater than 8 cm No CROSSTALK SPECIFICATION Crosstalk and residual low level signals are below 90 dBm NOTE The amplitude and phase error due to crosstalk and residual low level signals will be less than or equal to that shown on the graph in the table of specifications when the level measured in this test is below 90 dBm Maintenance Model 8407A Table 5 3 Performance Test cont d TEST PROCEDURE 2 DESCRIPTION The input level to both channels is set to 10 dBm A reference level is obtained on the display unit and the test channel input signal is d
157. be present when the instrument is unpacked Check the instrument for external damage such as broken controls or connectors and dents or scratches on the panel surface If damage is evident refer to Paragraph 2 5 for recommended claim procedure and Paragraph 2 7 for repackaging information If the shipping carton is not damaged check the cushioning material and note any signs of severe stress as an indication of rough handling in transit If the instrument appears undamaged check for all supplied accessories then perform the electrical check Paragraph 2 3 2 3 INITIAL ELECTRICAL INSPECTION 2 4 Check the electrical performance of the Net work Analyzer as soon as possible after receipt by performing the Performance Test Paragraph 5 8 through 5 21 The Performance Test procedure compares the electrical performance to the specifi cations of Table 1 1 This test is also suitable for incoming quality control inspection If the Net work Analyzer does not perform within the specifi cations refer to Paragraph 2 5 for recommended claim procedure and Paragraph 2 7 for repackaging information 2 5 CLAIMS 2 6 If physical damage is evident or if the instru ment does not meet specifications when received notify the carrier and the nearest Hewlett Packard Sales and Service Office See list at back of manual The sales and service office will arrange for repair or replacement without waiting for set tlement of a claim with the carr
158. cked oscillator A14 and ALC amplifier A13 are adjusted to obtain the correct level of Local Oscillator signal to converters A3 and A4 PROCEDURE a Check output of A15 LO Mixer Assembly as follows 1 Disconnect coax cable from A6 Master Board Assembly connector labeled LO OUT TO ALC Connect Spectrum Analyzer input to LO OUT TO ALC connector This 15 the output of 15 2 Set Sweep Oscillator for single frequency operation and slowly tune across high range to 110 MHz The signal level at LO OUT TO ALC connector should be 30 to 40 dBm from about 1 3 to 110 2 MHz If necessary check A14 Assembly output at A6 Master Board Assembly connector labeled PLO OUT PLO output should be 13 dBm 4 dB Select value for A14R47 to obtain 13 dBm signal level See Figure 7 14 for component location Typical range of values for A14R47 is 511 to 750 ohms Reconnect PLO OUT and check again for 30 to 40 dBm at LO OUT TO ALC connector 3 Reconnect coax cable to LO OUT TO ALC connector b Disconnect coax cable from A6 Assembly connector labeled LO TO CONV This is the output of A13 Connect Spectrum Analyzer input to LO TO CONV connector c With Sweep Oscillator set for single frequency operation slowly tune across high range to 110 MHz The signal level at LO TO CONV connector should be 0 dBm 2 dB from 1 3 to 110 2 MHz If necessary adjust A13R27 for signal level of 0 dBm 2 Reconnect coax c
159. d TEST PROCEDURE 6 d Set 8412A MODE switch to PHASE and PHASE DEG DIV switch to 10 Adjust cont d 8407A PHASE VERNIER to place 8412A phase trace over center graticule line If the overall trace slopes one way the coaxial cables between the power splitter and the 8407A input connectors should be changed to equal length to eliminate this linear phase shift The phase trace should be within 2 5 small graticule divisions 45 degrees of the center graticule line e Set the sweep oscillator to sweep between 1 and 110 MHz f Adjust 8407A PHASE VERNIER to place 8412A trace over center graticule line The phase trace should be within 2 5 small graticule divisions 5 degrees of the center graticule line g Set 8412A MODE switch to AMPL Adjust 8407A AMPL VERNIER control to place the 8412A amplitude trace on the center graticule line The trace should be within 4 small graticule divisions 0 2 dB of the center graticule line h Select any 10 MHz portion between 0 1 and 110 MHz portion with worst frequency response Set the sweep oscillator to sweep this 10 MHz portion i Adjust 8407A AMPL VERNIER control to place the 8412A amplitude trace the center graticule line The trace should be within 1 small graticule division 0 05 dB of the center line j Set 8412A MODE switch to PHASE and PHASE DEG DIV switch to 1 Adjust 8407A PHASE VERNIER to place 8412A phase trace over center graticule line The phase trace should be withi
160. d the output of the AGC IF amplifier both are monitored by over load detector circuits These circuits detect signal levels that are above a preset level and light the UNCAL REDUCE INPUT RATIO light When this light is lit the signal level passing through the test 4 1 Principles of Operation channel IF stages is too high to make accurate measurements If the overload occurs in the IF mixer the test channel rf input signal must be reduced to eliminate the overload However if the overload occurs in the test channel AGC IF ampli fier the overload may be eliminated either by reducing the rf input signal to the test channel or by obtaining a higher AGC voltage into the test channel AGC IF amplifier Increasing the AGC voltage will reduce the gain of the IF amplifier and eliminate overload in that stage Higher AGC volt age is obtained by increasing the signal level through the reference channel IF amplifier This may be accomplished either by changing the REF CHAN LEVEL ADJ to a higher position or by increasing the RF input signal level at the reference channel input 4 2 Model 8407A 4 13 The 278 kHz test channel IF signal from the AGC IF amplifier passes through a 10 dB step and a 1 dB step attenuator controlled from the front panel DISPLAY REFERENCE switches These switches allow up to 89 dB of amplitude offset for convenience in setting amplitude reference levels and making amplitude measurements The AMPL VERNIER control a
161. e 5 3 Performance Test TEST PROCEDURE 2 DB DIV switch to 10 Adjust 8407A DISPLAY REFERENCE switches and AMPL cont d VERNIER control to place the 8412A amplitude trace on the top graticule line The displayed trace is the 10 dBm reference Disconnect the test channel input signal Move the 10 dB step DISPLAY REFERENCE switch one position up The bottom 8412A graticule line is now 100 dBm The displayed trace should be below the 90 dBm graticule line 3 COMMON MODE LEVEL VARIATIONS AGC TRACKING SPECIFICATIONS Amplitude change is lt 0 5 dB 10 dB step and phase change is lt 0 8 degrees 10 dB step over 30 dB operating range DESCRIPTION The common mode sweep oscillator signal is adjusted through a 30 dB range and the accompanying change in the amplitude and phase trace is observed on the display unit TEST SETUP SWEEP OSCILLATOR NETWORK ANALY ZER BNC TEE DIRECTII emp X vro Es OUT DOUBLE TC SHIELDED A ATTEN WITH 50 OHM TERMINATION BENE DUAL TRACE OSCILLOSCOPE POWER SPLITTER LO o oo I SWEEP RF EQUIPMENT REQUIRED Sweep Oscillator HP 8601A or Two double Shielded Cables Part of Accessory 8690B 8698B Kit Plug In Indicator HP 8412A Two 50 Ohm Terminations included with Oscilloscope HP 180A 1801A 1820A 8407A Power Splitter HP 11652 60009 BNC Tee HP Stock No 1250 0781 Part of Accessory Kit
162. e Test ix 5 4 Performance Test 5 17 Alignment Controls Selected Components 5 19 Alignment Procedure nag 5 21 Abbreviations and Designators Used In Parts List 61 7 27 1 34 1 35 1 14 6 2 6 3 Test Channel AGC Amplifier 8 Schematic Change H Serial No 959 00245 and Below Parts Location for Diode Board and Power Supply A17 Change H Serial No 959 00245 and Below Power Supply 17 and Diode Board Schematic Change H Serial No 959 00245 and Below Parts Location for Phase Locked Oscil lator A14 Change I Serial No 924 00131 thru 948 00175 Phase Locked Oscillator A14 Schematic Change I Serial No 924 00131 thru 948 00175 1 19 Parts Location for Automatic Level Con trol Amplifier A13 Change L Serial No 924 00130 and Below Automatic Level Control Amplifier A13 Schematic Change L Serial No 924 00130 and Below Parts Location for Phase Locked Oscil lator A14 Change L Serial No 924 00130 and Below 1 12 I 13 I 14 1 18 1 20 1 21 1 22 Page 6 2 6 20 Replaceable Parts Code List of Manufacturers APPENDIX I 6 1 Parts List for A13 in instruments with serial number 924 00130 and below and A14 in instruments with serial number 948 00175 and below 1 14 Section I Model 8407A General Information wi M THRONE 53 8407 NETWORK ANALYZER T
163. e side of 500 mV the difference between 500 mV and the mean of all the readings may be the display unit error Repeat this test using a second display unit or calculate the mean and correct each reading to the difference between the mean and the measured value Maintenance Model 8407A Table 5 3 Performance Test cont d TEST PROCEDURE Example of DISPLAY REFERENCE 10 dB Step Accuracy Table f Add algebraically the error of each 10 dB step to the total of previous steps For the example above 08 02 06 06 05 01 minimum 01 04 05 05 01 04 04 02 06 06 06 12 maximum 12 04 08 The total error is the difference between the maximum and minimum values In this case total amplitude error is 0 12 01 0 11 dB and the total phase is 0 2 1 95 1 75 The error per dB step should be less than 0 1 dB and 0 5 The total error should be less than 0 25 dB and 3 FREQUENCY RESPONSE REFERENCE input 10 dBm TEST input gt 60 dBm DIRECT SPECIFICATION Frequency response is 0 2 dB and 5 degrees 0 1 to 110 MHz 0 05 dB and 2 degrees over any 10 MHz portion DESCRIPTION The equipment is set up for a calibration trace The frequency response is checked over the operating range of 0 1 to 110 MHz in two bands Both the amplitude and phase response is observed in each band A 10 MHz portion of the o
164. eak 278 kHz signal YES Trouble is in A9 Test Channel IF band pass filter Trouble is in A9 Test Channel IF band pass filter Put A8 on board extender and connect oscilloscope to XA8 2 Waveform should be 0 25 volt peak to peak 278 kHz sig nal Trouble is in A8 Test AGC amplifier Trouble is in A7 IF attenuator N Trouble is in A2A2 units attenuator part of A2 front panel assembly Disconnect cab tor Connect nected cable V volt peak to pee Trouble is in A Set sweep oscillator for swept mode over 10 kHz or narrower band Check 8412A display for proper amplitude and phase trace as shown below Both amplitude and phase traces should be straight and relatively smooth Noise should be less than 1 small division peak to peak YES If eithe not a sr trace t lock I describe If no t for 48 and Jl present T1 H trace 8412A ting and Service NO Disconnect cable from A4 LO connec tor Connect oscilloscope to discon nected cable Waveform should be 0 63 volt peak to peak Trouble is in A13 auto level control amplifier Trouble is in A4 test channel converter If either the amplitude or phase trace is not a smooth line in one segment of the trace trouble is probably poor phase i lock Perform phase lock adjustment described in Table 5 5 Test 4 S If no trace is present on 8412A check for 480V peak to pe
165. er by description oval head oxide peak printed circuit picofarads 10 12 farads phosphor bronze Phillips peak inverse voltage positive negative positive part of polystrene porcelain position s Dotentiometer peak to peak point peak working volt age rectifier radio frequency round head or right hand N lt gt z RMO RMS RWV S B SCR SE SECT SEMICON SI SIL SL SPG SPL SST SR STL TA TD TGL THD TI TOL TRIM TWT VAR VDCW W WIV WW W O H I H H I H H IH H H J H H H H H H H H H H H H H H H H Il Ho gu li Hod vacuum tube neon bulb photocell etc voltage regulator cable socket crystal tuned cavity network rack mount only root mean square reverse working voltage slow blow screw selenium section s semiconductor silicon silver slide spring Special Stainless steel split ring steel tantalum time delay toggle thread titanium tolerance trimmer traveling wave tube micro 1076 variable dc working volts with watts working inverse voltage wirewound without 6 1 Replaceable Parts Model 8407A Table 6 2 Replaceable Parts Mfr 08407 60014 08401 60143 0160 2262 0160 2250 0160 2255 Reference Designation Mfr Part Number FRONT PANEL SWITCH ASSY REBUILT 08407 60014 REQUIRES EXCHANGE C FXD CER 2 4 PF 500VDCW CER 5 1 PF 500VDCW CER 8
166. esistor in series with the line with a connector on both ends Page 7 25 Figure 7 25 Add a 50 to 75 ohm adapter at the end of test channel input connectors J4 and J6 consisting of a 25 ohm resistor in series with the line with a connector on both ends II 1 HEWLETT hp PACKARD Part of HP Part No 08407 90038 ERE D WD K4XL s BAMA This manual is provided FREE OF CHARGE from the BoatAnchor Manual Archive as a service to the Boatanchor community It was uploaded by someone who wanted to help you repair and maintain your equipment lf you paid anyone other than BAMA for this manual you paid someone who is making a profit from the free labor of others without asking their permission You may pass on copies of this manual to anyone who needs it But do it without charge Thousands of files are available without charge from BAMA Visit us at http bama sbc edu
167. ference lt 0 05 dB 1 dB step total error does not exceed 0 1 dB 0 1 dB 10 dB step total error does not exceed 0 25 dB Crosstalk When REFERENCE CHANNEL level equals 10 dBm conditions for best WORST AMPLIFIER ERROR dB 40 60 80 TEST REF RATIO dB WORST PHASE ERROR DEG signal to noise ratio amplitude error due to crosstalk and residual low level signals is lt that shown on the graph below Common Mode Level Variation AGC track ing 0 5 dB 10 dB over 30 dB operating range For minor source and transducer varia tions 0 05 dB this error is negligible PHASE ACCURACY amplitude reading must be on scale at the 10 dB division setting on the 8412 Frequency Response TEST inputs gt 60 dBm DIRECT may be calibrated out 5 degrees 0 1 to 110 MHz 2 degrees over any 10 MHz portion 1 to 110 MHz Typically 2 degrees 1 to 110 MHz for DIRECT inputs REFERENCE level of 10 dBm Display Reference lt 0 5 10 dB step total error does not exceed 3 Crosstalk When REFERENCE CHANNEL level equals 10 dBm conditions for best signal to noise ratio phase error due to cross talk and residual low level signals is lt that shown on the graph above Common Mode Level Variation AGC track ing 0 8 7 10 dB over 30 dB operating range For minor source and transducer variation 0 5 dB this error is negligible POWER 65 watts 50 60 Hz 115 230 Vac 10 WEIGH
168. gle frequency operation with an output level of 35 dBm c Connect oscilloscope to 8407A rear panel IF REF OUTPUT The signal amplitude should be 1 4 0 3V peak to peak If necessary select value for A11R24 to obtain the desired signal level Typical range of values for A11R24 is 16 2K to 121K ohms d Connect Oscilloscope to 8407A rear panel IF TEST OUTPUT The signal amplitude should be 320 mV 40 mV If necessary select value for ASR20 to obtain the desired signal level Typical range of values for A8R20 is 10K to 29K ohms OVERLOAD LIGHT ADJUSTMENT A4R58 DESCRIPTION The signal level that causes the overload light to go from off to on is checked A resistor in overload amplifier is changed to obtain the correct switching range PROCEDURE a Install a BNC tee in test channel between Power Splitter and 8407A TEST CHANNEL DIRECT input Connect Oscilloscope to BNC tee b Set Sweep Oscillator for single frequency operation on the low frequency range Adjust output level for 200 mV peak to peak signal on oscilloscope and then 250 mV The UNCAL REDUCE INPUT RATIO light should be off with 200 mV input and on with 250 mV input If necessary select value for A4R58 to obtain desired indications Typical range of values for A4R58 is 10K to 42 2K ohms 5 25 5 26 Model 8407A 6 1 INTRODUCTION SECTION VI REPLACEABLE PARTS 6 2 This section contains information for ordering replacement parts and assemblies Table 6 1 pro vide
169. gnal Level Adjustment Test 4 b Adjust phase tracking as follows 1 With Sweep Oscillator set for widest sweep width on low frequency range the swept phase display should not vary more than four degrees across frequency range If necessary adjust A4L1 and A3L1 for desired response 2 Set Sweep Oscillator for widest sweep width on high frequency range 3 The swept phase display should not vary more than four degrees across frequency range If necessary adjust A4L1 and A3L1 for desired response If adjustment 1s made repeat phase tracking adjustments until no further adjustment is required NOTE If unable to obtain less than four degrees variation on high frequency range adjust Al3R27 slightly and repeat both amplitude and phase tracking adjustments If A13R27 is adjusted recheck Local Oscillator Signal Level Adjustment Test 4 Mode 8407A Maintenance TEST Table 5 6 Alignment Procedure cont d PROCEDURE AND DESCRIPTION REFERENCE AND TEST CHANNEL LEVEL ADJUSTMENT A8R20 and A11R24 DESCRIPTION The reference channel IF output is adjusted by selecting the value of the feedback resistor in the reference channel AGC amplifier PROCEDURE a Adjust 8407A controls as follows 1 REF CHAN LEVEL ADJ to middle position 2 DISPLAY REFERENCE 10 dB switch to top position 3 DISPLAY REFERENCE 1 dB switch four steps down from top position b Adjust Sweep Oscillator for sin
170. gt 12 pF 29625 261 11 2 122 2 1222 21k 20 TO 50 dBm 1 L L L 20 dBm MAX 7 20V O O ee N mom reer rAR O APLIFIER xa MEME fr re AMPLIFIER 3 OWS i 0 85 0 14V 3 0 29V P P 7 20V 0 6V 0 15V pu P 1 u IK 28 37 P C233 1 BALANCED MIXER 105148 R49 R52 42 2K 9 09 Q5 1854 0071 52 V C24 0 85V 13 9V R53 121 Q7 3 1853 0021 5 8 nr 2 TuH 4 a i 9 2V 0 47 i 50 mV P P 0 08V 1 ANN m E R45 R67 2 8 K 3 83K R66 R65 6 19K 26 1071 NNI A i R51 0 1 0 2 uH RF 261 AMPLIFIER 20V Ql 5 4V 42 2 1854 0431 R39 R42 681 750 R19 R23 1 L 1 71 15 38 3 n 7 E R17 R21 R33 R34 lus REFERENCE DESIGNATIONS WITH T 192 5 96 25 38 3 2610 ASSEMBLIES ARE ABBREVIATED FULL T I CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY Al i 80 mV 15 AIR DESIGNATIONS OF OTHER COMPONENTS ARE Y mV P P COMPLETE AS SHOWN TENUATOR 5 90mV I REFERENCE DESIGNATIONS A3 ASSY 50 dB ATTENUATOR R35 1 21K R20 R25 R28 241 5 71 15 247 5 R18 R22 2 R24 12 R26 R27 R30 31 R36 C13 122 2 61 11 96 l 12 pF 96 25 61 11
171. he input connector and adjust the sweep oscillator for 20 mV peak to peak on oscilloscope NO Figure 7 5 Troubleshooting Tree 1 of 3 1 4 Connect oscilloscope to 44 TEST CHANNEL DIRECT through a BNC tee And waveform should be 20 mV peak to peak on oscilloscope YES FRONT PANEL VISUAL CHECK Check for an indication on the REF CHAN LEVEL meter near the top of the OPERATE range YES REFERENCE CHANNEL Connect oscilloscope to rear panel IF REF OUT J8 and waveform should be 1 2 volts peak to peak 278 kHz YES Put A12 on board oscilloscope to should be 3 0 vol peak 278 kHz Connect oscilloscope to J11 24 plug in interface connector and check for 2 2 volts peak to peak YES Sweep oscillator or power splitter defec tive or short in A3 scilloscope to J4 TEST DIRECT through a BNC yaveform should be 20 mV lt on oscilloscope YES an indication on the REF EL meter near the top of the ange YES NNEL cilloscope to rear panel IF J8 and waveform should be lk to peak 278 kHz YES NO Power splitter defective or short in A4 NO at A17TP4 Check with DVM for 80 Vdc YES Trouble is in A17 series regulats short on 20 volt line POWER SUPPLY Check with digital voltmeter DVM for 20 1 0 Vdc at A17TP3 and 20 1 0 Vdc at A17TP2 If indication is just slightly out of toler ance make slig
172. his adjustment with as much precision as possible Adjust the input power level from the sweeper and the 8407A REF CHANNEL LEVEL ADJ DISPLAY REFERENCE 1 dB step and AMPLITUDE VERNIER control to obtain a zero volt indication on the DVM with the 10dB step DISPLAY REFERENCE switch at four positions down from the top 40 Move the 10 dB step DISPLAY REFERENCE switch to the bottom position Adjust 8412A front panel AMPL CAL LOW LEVEL control for 2V on DVM Repeat this adjustment until the zero and 2V indications are as precise as possible 5 9 Maintenance Model 8407 A Table 5 3 Performance Test cont d TEST PROCEDURE a Connect equipment as shown in the test setup Connect the step attenuator between the power splitter and 8407 A test channel DIRECT input b Set the 8407A REF CHAN LEVEL ADJ to the middle position Set the sweep oscillator for minimum sweep width at any frequency in the 8407A operating range Adjust the RF output level for an 8407A REF CHAN LEVEL meter indication in the middle of the OPERATE range c Set the 8407A DISPLAY REFERENCE 1 dB step switch to the top position and adjust the DISPLAY REFERENCE CAL thumbwheel for 0 d Adjust the test channel input level zero to 12 dB step attenuator at the test channel input 8407A DISPLAY REFERENCE 10 dB step switch and AMPLI TUDE VERNIER for zero 0 5 mV on DVM e Check each DISPLAY REFERENCE 1 dB step as follows 1 Set the DISPLAY REFERENCE 1 dB step
173. ht adjustment of either A17R7 20V or A17R16 20V Transients may trigger 20 volt overvolt age protection If so turn instrument off about 5 minutes then back on again and power supply should come on again INCORRECT OR NO VOLTAGE AT BOTH A17TP2 AND 17 YES INCORRECT OR NO VOLTAGE A17TP2 Put A12 on board extender and connect oscilloscope should be 38 0 volt 0 5 volt peak to peak 278 kHz to J11 24 plug in nnector and check for 2 2 peak YES ator or power splitter defec tin A3 to NO A12TP2 Trouble is in A2A1 50 degree phase shifter part of A2 front panel assem bly Waveform Trouble is in A12 reference channel IF bandpass filter Trouble is in A12 reference channel IF band pass filter Un INCORRECT OR NO VOLTAGE AT A17TP3 If zero Vdc at b probably fuse power switch C DVM input not grounde Check with DV between A1T7TEI Tre Check with DVM for 30 Vdc at A17TP4 4 Vde Trouble is in A17 series regulator Q1 or short on 20 volt line INCORRECT OR NO VOLTAGE AT A17TP3 If zero Vdc at both test points trouble is probably fuse F1 transformer T1 or RRECT OR NO power switch S1 AT BOTH P2 AND A17TP3 CAUTION NO DVM input must floating AT A17TP2 not grounded for this step Check with DVM for 30 Vdc 4 Vdc betwee
174. ier 2 7 REPACKAGING FOR SHIPMENT 2 8 Using Original Packaging 2 9 The same containers and materials used in factory packaging can be obtained through the Hewlett Packard sales and service offices listed at the back of this manual If the Model 8407A is being returned to Hewlett Packard for servicing attach a tag indicating the type of service required return address model number and full serial number Also mark the container FRAGILE to assure careful handling In any correspondence refer to the instrument by model number and full serial number 2 10 Using Other Packaging 2 11 The following general instructions should be used for repackaging with commercially available materials a Wrap the instrument in heavy paper or plas tic If shipping to a Hewlett Packard service office or center attach a tag indicating the type of service required return address model number and full serial number b Use a strong shipping container A double wall carton made of 350 pound test material is adequate c Use enough shock absorbing material 3 to 4 layer around all sides of instrument to provide firm cushioning and prevent movement inside the container Protect control panel with cardboard d Seal the shipping container securely and mark it FRAGILE to assure careful handling e In any correspondence refer to instrument by model number and full serial number 2 12 PREPARATION FOR USE 2 13 Power Requireme
175. ignal may be decreased by changing the RF input cable from DIRECT to ATTEN input or by reducing the RF signal level from the sweep oscillator IRSPLAY REFERENCE 48 2 DISPLAY REFERENCE CAL 3 REF CHAN LEVEL Meter An indication in the OPERATE range of the meter shows that the reference channel input signal level is in the correct range to make signal meas urements REF CHAN LEVEL ADJ Switch The Switch is a three position attenuator in the reference channel Each step is 20 dB The switch allows the reference channel signal to be adjusted to produce a REF CHAN LEVEL meter indication in the OPERATE range DISPLAY REFERENCE dB Ten dB Step Switch This switch offsets the amplitude trace on the plug in display by adding or reducing gain of the test channel in 10 dB steps DISPLAY REFERENCE dB One dB Step Switch This switch offsets the amplitude Figure 3 1 Front Panel Features 1 of 2 Model 8407A EL Operation FRONT PANEL FEATURES trace on the plug in display by adding or reducing gain of the test channel in 1 dB steps Pivoting lever installs retains and extracts the plug in display units DISPLAY REFERENCE CAL Thumb wheels These thumbwheels set the scales for the DISPLAY REFERENCE 10 dB step and 1 dB step switches This allows the scales to be set at zero dB for the calibration position of the switches When measuring gain or attenuation the displayed
176. in the Operating and Service Manuals for the display units 1 10 ACCESSORIES FURNISHED 1 11 A detachable power cable a rack mounting kit a servicing cable two 50 ohm terminations and three BNC cables are supplied with Model 84074A 1 12 Rack Mounting Kit 1 13 The rack mounting kit contains all the hard ware needed to adapt the Model 8407A cabinet for installation in equipment racks having standard 19 inch spacing Instructions for conversion to rack mounting are included with the kit 1 14 Servicing Cable 1 15 The servicing cable permits all necessary interconnections to be made between the Model 8407A and a plug in display unit with the unit outside the plug in compartment 1 1 General Information Model 8407 A Table 1 1 Specifications FREQUENCY RANGE 0 1 to 110 MHz TEST INPUT Direct 10 to 90 dBm signal range Attenuated 20 to 50 dBm signal range Impedance 50 ohms VSWR 1 08 Option 008 75 ohm VSWR 1 08 Damage Level 26 dBm 50 Vdc REFERENCE INPUT Direct 10 to 60 dBm Attenuated 20 to 20 dBm Impedance 50 ohms VSWR lt 1 08 Option 008 75 ohms VSWR 1 08 Damage Level 26 dBm 50 Vdc AMPLITUDE ACCURACY 1 2 Frequency Response TEST inputs gt 60 dBm DIRECT may be calibrated out 0 2 dB 0 1 to 110 MHz 0 05 dB over any 10 MHz portion Typically 0 05 dB 0 1 to 110 MHz for DIRECT inputs REFERENCE level of 10 dBm Display Re
177. ing it out of phase lock LOW PASS FILTER 250 MHz A low pass filter is formed by C32 C33 and L8 L10 This removes mixing products and harmonics above the PLO frequency range 7 14 Model 8407A A14 Figure 7 14 Parts Location for Phase Locked Oscillator A14 A11 REF AGC A14 PHASE LOCKED OSCILLATOR 08407 60009 wa k rr F rr eee T 218 kHz REF CHANNEL SIGNAL 20V fi 3V P P 5 3 6 ui SEC 10 P O 1854 0071 512 mV R39 7500 10K 20V is PHASE LOCK OSCILLATOR 20V R42 1000 e Y2 199 722 MHz 7 PEAKING R46 1854 0471 625 my 1000 R44 100 47 pF C23 R45 C39 Te pF 3830 T 24 Oe L _ _ _ _ S R EE ee MEME T i ix CR2 R4 3160 5 AV 10V Q13 1854 0071 Z R40 10 6 10K R39 41 7500 10K 20V f PHASE LOCK OSCILLATOR 20V fi R42 1000 3 3 pF Y2 199 722 ue MHz 015 QW PEAKING R46 1854 0471 625 my AEN 1000 199 47 pF C23 R45 C39 R34 7500 6 SEARCH AMPLIFIER Q7 1854 0071 27 mV R17 3830 R18 0 3830 Y 1853 0020 R10 04 ZY CM 3830 8 0V 1853 0020 2 2 47 2 2 12 5 3 RII CA R37 7500
178. isconnected With RF signal applied only to the reference channel any signal present in the test channel is due to signal leakage between channels crosstalk and test channel residual low level signals The test channel signal with the input disconnected is measured on the display unit TEST SETUP SWEEP OSCILLATOR NETWORK ANALY ZER DOUBLE SHIELDED CABLE ee o DUAL TRACE OSCILLOSCOPE CALIBRATED 0 120 dB STEP ATTENUATOR POWER SPLITTER EQUIPMENT REQUIRED Sweep Oscillator HP 8601A or 0 120 dB Step Attenuator HP 355D 8690B 8698B calibrated in amplitude amp phase at 40 MHz Plug In Indicator HP 8412A Two Double Shielded Cables Part of Oscilloscope HP 180A 1801A 1820A Accessory Kit Power Splitter HP 11652 60009 Two 50 Ohm Terminations inc with 8407A Part of Accessory Kit BNC Tee HP Stock No 1250 0781 UG274 B U Part of HP 11652A Accessory Kit PROCEDURE a Connect equipment as shown in test setup Adjust the sweep oscillator output level for 4 dBm Minus 4 dBm less the power splitter insertion loss of 6 dB 10 dBm at 8407A input Connect both power splitter outputs to the 8407A DIRECT inputs b Set sweep oscillator for full bandwidth sweep between 1 and 110 MHz Set RF blanking and markers off Set 8407A REF CHAN LEVEL ADJ switch to lower position Set 8412A BW kHz switch to 0 1 MODE switch to AMPL and AMPL Model 8407 A Maintenance Tabl
179. ixes Not Listed For serial prefixes above 1144A a Manual Changes For serial prefixes sheet is included with this manual below 1144 see Appendix I Copyright HEWLETT PACKARD COMPANY 1971 1501 PAGE MILL ROAD PALO ALTO CALIFORNIA U S A Manual Part No 08407 90038 Microfiche Part No 08407 90039 Printed DEC 1971 Model 8407A Table of Contents TABLE OF CONTENTS section Page Section Page I GENERAL INFORMATION 1 1 3 6 Over Voltage and Transient 1 1 Description b um Protection l 1 10 Accessories Furnished amp cis ied 3 8 Panel Features ED 1 12 Rack Mounting Kit 1 1 3 10 Instructions for Making 1 14 Servicing Cable 1 1 Measurements 8 1 1 16 Accessories Available 1 3 3 12 Transmission Measurements 9d 1 24 Display Units 2 1 3 3 14 Reflection Measurements 3 6 1 26 Model 8412A Phase Magnitude Display 1 3 IV PRINCIPLES OF OPERATION 4 1 1 28 Model 8413A Phase 4 1 General 4 1 Gain Display 1 8 4 5 Simplified Block Diagram 1 30 Model 8414A Polar Display 1 3 Description 4 1 1 32 Signal Source Requirements 1 4 1 34 Instruments Covered by V MAINTENANCE 9 1 Manual 1 4 5 1 Introduction e g amp Dl 5 3 Printed Circuit Board II INSTALLATION 2 1 Exchange 5 1 2 1 Initial Mechanical Inspection 2 1 5 6 Maintenance Precautions
180. level control Disconnect miniature coaxial cable at Al6 VTO OUT at bottom of A6 master board Connect spectrum analyzer to Trouble is in A16 VTO Amplifier Al6 VTO OUT connector and signal level should be gt 2 dBm Reconnect cable after measurement YES Trouble is in A15 LO mixer n A3 reference channel con SHEET 2 TEST CHANNEL Connect oscilloscope to rear panel IF Put A7 on board extender and conne TEST OUT J7 and waveform should be oscilloscope to XA7 2 Waveform shoul 0 4 to 0 6 volts peak to peak be 70 mV peak to peak 278 kHz signa hase locked oscilla YES YES Connect oscilloscope to 11 Wav form should be 1 4 volt peak to pea 278 kHz signal VTO Amplifier YES Put A9 on board extender and conne oscilloscope to A9TP2 Waveform shoul be 1 0 volt peak to peak 278 kHz signe YES Trouble is in A9 Test Channel IF bar pass filter Connect oscilloscope to J11 3 plug in NO interface connector and check for 0 8 Trouble is in A9 Test Channel IF banc to 1 3 volts peak to peak pass filter YES NO Put A 7 on board extender and connect oscilloscope to XA7 2 Waveform should be 70 mV peak to peak 278 kHz signal YES Connect oscilloscope to XA7 11 Wave form should be 1 4 volt peak to peak 278 kHz signal YES Put A9 on board extender and connect oscilloscope to A9TP2 Waveform should be 1 0 volt peak to p
181. lso works through the 1 dB step IF attenuator for fine adjustment of the amplitude trace on the plug in display 4 14 The output from the 1 dB step IF attenu ator is the test channel amplitude and phase signals for the plug in display The test channel signal is also applied to the rear panel IF TEST OUT con nector 200 1 TO 310 MHz FROM SWEEPER RF INPUTS 0 1 TO 110MHz RF CHANNEL ATTEN REF CHANNEL DIRECT TEST CHANNEL ATTEN TEST CHANNEL DIRECT 50 dB ATTENUATOR 10 dB ATTENUATOR 29 dB ATTENUATOR 10 dB ATTENUATOR LOCAL OSCILLATOR MIXER 199 722 MHZ OSCILLATOR L O 0 378 TO 110 278 MHz ALC AMPLIFIER L O RF 0 378 TO 0 170 110 278 MHz 110 MHz lt 7 278KHz STEP N ATTENUATOR OVERLOAD DETECTOR L O 0 387 TO OVERLOAD 110 278 MHz DETECTOR IF MIXER REF CHANNEL LEVEL ADJ LOCAL OSCILLATOR MIXER OY 199 722 MHz PHASE 2 8 OSCILLATOR DETECTOR OSCILLA 1 0 0 378 TO 110 278 MHz ALC AMPLIFIER 278KHz IF REF CHANNEL LEVEL ADJ RF P en 110 278 MHz 110 MHz IF MIXER 2 278 STEP PHA ATTENUATOR REF OVERLOAD DETECTOR L O 0 387 TO 110 278 MHz OVERLOAD DETECTOR v 10 dB STEP IF CN ATTENUATOR Principles of Operation PHASE 218KHz DETECTOR OSCILLATOR 278KHz IF PHASE VERNIER __ AGC IF PHASE REFER
182. lter Ser Pre 1144A c 0 i NOTE C7 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND 01 E j4 gt TEST SETUP OBTAIN WAVEFORMS AND VOLTAGES SHOWN REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION CLUDES ASSEMBLY NUMBER e g RI OF ASSEMBLY IS AIRI DESIGNATIONS OF OTHER COMPONENTS COMPLETE AS SHOWN Service rwv v P ee OUTPUT EMITTER FOLLOWER 20V R7 196 3 1 0V P P R4 19 2V 196 V Q1 1 1854 0071 3 CHANNEL PHASE e 1854 0071 62V R3 zz iF TEST OUTPUT 10K 1 TEST CHANNEL AMPLITUDE 1 24 REFERENCE CHANNEL ASST oe 1 d REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g OF ASSEMBLY 1 IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN A9 A12 Figure 7 21 IF Bandpass Filter A9 and A12 Schematic Diagram 1 21 Service Model 8407A SERVICE SHEET 8 A10 AGC Feedback Amplifier 90 DEGREE PHASE SHIFTER The reference channel IF signal passes through 912 to the input of 911 The IF signal is shifted by 90 degrees through Q11 primarily due to capacitor C9 between base and collector Amplifier U1 squares the 278 kHz signal FREQUENCY DOUB
183. magni tude trace may be returned to the calibra tion point on the graticule with the DIS PLAY REFERENCE switches This allows the total gain or attenuation of the unit under test to be read directly from the DIS PLAY REFERENCE scales AMPL VERNIER Control Uncalibrated test channel gain vernier with at least 2 dB of continuous range Gain increases with clock wise rotation PHASE VERNIER Control Uncalibrated vernier adjustments of the phase between reference and test channel signals Range is at least 50 degrees POWER ON OFF Switch Combination line power switch and power indicator Switch lights when instrument is on 12 13 14 15 16 TEST CHANNEL ATTEN 40 dB Input Connector Test channel RF input that attenuates the RF input signal by 40 dB greater than the TEST CHANNEL DIRECT input Signal input range for the ATTEN in put is between 20 and 50 dBm If the input RF signal is less than 50 dBm the DIRECT input should be used Damage level is above 26 dBm and 50 Vdc TEST CHANNEL PROBE POWER Con nector Provides power for active test channel accessory probe TEST CHANNEL DIRECT Input Connec tor Test channel RF input that is used for signal inputs in the range of 10 to 90 dBm If the input RF signal is greater than 10 dBm the ATTEN input should be used In this case a 50 ohm termination must be connected to DIRECT input Dam age level is above 26 dBm and 50 Vdc REF CH
184. ming rf signal 4 8 An automatic level control circuit maintains a constant local oscillator LO signal level to the IF mixers Holding the LO signal constant 1s necessary to obtain high accuracy amplitude measurements 4 9 The reference channel IF signal passes through a step attenuator that provides 20 dB step of attenuation This accomodates a wide range of reference channel signals without overloading the reference channel IF amplifier The setting of the reference channel step attenuator does however affect the test channel amplitude since the gain of the test channel AGC IF amplifier is controlled by the common AGC feedback amplifier which oper ates from the reference channel signal 4 10 The AGC IF amplifiers in the reference and test channels together with the AGC feedback amplifier level the IF signals to eliminate common mode signal level variations This allows precise amplitude measurements with an unleveled rf sweep oscillator source 4 11 The reference channel contains a phase shift network that allows the phase of the reference channel to be changed approximately 50 degrees by the front panel PHASE VERNIER control The output from the phase shift circuit is applied to the plug in display and to the rear panel IF REF OUT connector 4 12 The test channel signal from the IF mixer passes through the AGC IF amplifier leveling the common mode variations in signal level The out put of the test channel IF mixer an
185. mission Reflection Accessory Kit Standards Laboratory Includes Power Splitter HP 11652 60009 Directional Bridge HP 8721A BNC Short HP 1250 0929 3 Double Shielded coaxial cables BNC 50 ohm load HP 11652 60001 Plug Plug Adapter HP 1250 0080 11652A BNC Elbow HP 1250 0076 BNC Tee Impedance 50 ohms 1250 0781 Connectors BNC UG274 B U 1250 0207 1250 0838 Tee Adapter Jack Plug Jack Subminiature RF Impedance 50 ohms 1250 1113 Adapter Plug Plug Type Subminiature coaxial Subminiature Impedance 50 ohms 1250 0831 RF to BNC Adapter Type Subminiature coaxial and BNC 5 3 50 ohm Termination 2 required Impedance 50 ohms Connector BNC Subminiature RF Impedance 50 ohms Type Subminiature coaxial Maintenance Model 8407A Table 5 3 Performance Test TEST PROCEDURE NOTE The sweep oscillator RF blanking should be off for all performance os CAUTION Do not apply greater than 26 dBm RF signal or 50 Vdc to any of the 8407A input connectors or damage to the internal components may result RF INPUT CONNECTOR VSWR SPECIFICATIONS Test and reference channel input connectors have VSWR lt 1 08 DESCRIPTION A reference level is obtained by applying a signal at the SOURCE input of the directional bridge that will produce a 20 dBm RF signal at the LOAD output of the bridge This signal is reflected back to the oscilloscope through the REFLECTED arm of the bridge With
186. n A17TP1 and A17TP2 YES DO degree phase ront panel assem short on 20 volt line Trouble is in diodes A5CR1 or A5CR2 or transformer T1 Trouble is in A17 series regulator Q2 or SHEET 1 NO Trouble is in diodes A5CR3 or or transformer T1 PHASE LOCK LOOP NO WAVEFORM Put 11 on board extenders and check waveform with oscilloscope at 11 11 SEARCH WAVEFORM PRESENT for a 3 5 volt peak to peak 0 5 volt peak to peak 278 kHz phase locked sig nal If search waveform is pre below trouble is in A14 oscillator Align 1417 alignment procedures Te 3 If alignment does not lem replace PLO A14 YES 200 TO 500 KHz WAVEFORM PRESENT If 278 kHz waveform is BUT NOT phase locked as shown bel PHASE LOCKED in A14 phase locked oscille AoCR4 278 KHz Check for 0 16 Vde 0 02 Vdc at NO Trouble is in A10 AGC feedback ampli AGTP1 with DVM fici YES Trouble is in meter driver in A2 front panel assembly or in REF CHAN LEVEL meter M1 Service TO SHEET 2 If search waveform is present as shown below trouble is in 4 phase locked oscillator Align A14L7 according to alignment procedures Table 5 6 Test 3 If alignment does not correct prob lem replace PLO A14 200 TO 500 KHz If 278 kHz waveform is present but not phase locked as shown below trouble is in A14 phase locked oscillator 278 KHz
187. n in Figure 7 7 and detailed theory of operation is presented in Section VII opposite the individual schematic diagrams 4 5 SIMPLIFIED BLOCK DIAGRAM DESCRIPTION 4 6 As shown in Figure 4 1 the reference and the test signals may be applied to either an attenuated or a direct input The direct inputs are for rf signals in the range of 10 dBm to 90 dBm and the attenuated inputs accomodate signal inputs of 20 to 50 dBm The 0 1 to 110 MHz rf test and reference signals are each mixed in separate IF mixer circuits that are driven by a common local oscillator signal The output of the two IF mixers is 278 kHz reference and a test IF signal 4 7 The local oscillator signal applied to the IF mixers is derived from the difference between the 199 722 MHz oscillator and the VTO signal from the sweeper The VTO signal from the sweeper is 200 MHz away from the rf input test and reference signals In order to hold the 199 722 MHz oscilla tor on frequency the 278 kHz IF signal is com pared to a 278 kHz crystal oscillator in a phase detector circuit and a resultant correction voltage is applied to the 199 722 MHz oscillator These circuits form a phase lock loop to hold the IF at 278 kHz When the IF signal is not at 278 kHz the 199 722 MHz oscillator searches above and below that frequency to attempt to phase lock the in coming rf signal When 278 kHz is sensed from the IF the oscillator stops searching and locks with the inco
188. n two major graticule divisions 2 degrees of the center line Model 8407A Maintenance Table 5 4 Performance Check Test Card Hewlett Packard Model 8407A Network Analyzer Tests Performed by Serial No RF INPUT CONNECTOR VSWR REF CHANNEL DIRECT 8 cm REF CHANNEL ATTEN 8 cm TEST CHANNEL DIRECT 8 cm TEST CHANNEL ATTEN 8 cm CROSSTALK Signal Level Below 90 dBm COMMON MODE LEVEL VARIATIONS AGC TRACKING 10 dB steps Amplitude 0 5 dB 0 5 dB 0 5 dB 10 dB steps 0 8 deg 0 8 deg 0 8 deg DISPLAY REFERENCE 1 dB STEP ATTENUATOR ACCURACY 1 dB step 0 05 dB 0 05 dB 0 05 dB 0 05 dB 0 05 dB 0 05 dB 0 05 dB 0 05 dB 0 05 dB Overall 0 1 dB DISPLAY REFERENCE 10 dB STEP ACCURACY oooooooo Overall 0 25 dB 3 5 17 Maintenance Model 8407A Table 5 4 Performance Check Test Card cont d 4 small divisions 0 2 dB 2 5 small divisions 5 deg 2 5 small divisions 5 deg 4 small divisions 0 2 dB small division 0 05 2 major divisions 2 deg FREQUENCY RESPONSE 0 1 11 MHz Amplitude 1 110 MHz Amplitude 10 MHz Segment Amplitude Model 8407A Maintenance Table 5 5 Alignment Controls and Selected Components Cos Name Function Adjusted Table 5 6 Designa
189. ne across high range to 110 MHz The signal level at VTO OUT connector should be greater than 2 dBm across VTO range to 310 MHz Note Signal levels below 0 dBm may cause phase lock problems 3 Reconnect coax cable to A16 Assembly VTO OUT connector b Set 8407A controls as follows 1 REF CHAN LEVEL to bottom position 2 DISPLAY REFERENCE 10 dB switch two steps from bottom position 3 DISPLAY REFERENCE 1 dB switch five steps from bottom position c Set Sweep Oscillator for single frequency operation with output level of 4 dBm 10 dBm into 84074A d Connect one oscilloscope input to 8407A rear panel IF REF connector Connect the other oscilloscope input using 10 1 divider probe to A14 Assembly PLO TUN pin on A6 Master Board Note If dual trace oscilloscope is not available connect DC voltmeter to PLO TUN pin e Adjust A14L7 tuning slug to top of coil form Slowly adjust tuning slug in until signal at IF REF output is a 278 kHz 3 6 microsecond period sinewave and dc voltage level at PLO TUN pin is 9 Vdc 0 5 Vdc NOTE Once 141 7 is adjusted it is important that the tuning slug remain fixed Therefore apply a small amount of glue such as Q dope on the tuning slug f Glue tuning slug A14L7 in position 5 22 Model 8407A Maintenance Table 5 6 Alignment Procedure cont d TEST PROCEDURE AND DESCRIPTION LOCAL OSCILLATOR SIGNAL LEVEL ADJUST A13R27 A14R47 DESCRIPTION Phase lo
190. nts 2 14 The 8407A Network Analyzer requires a power source of 115 or 230 Vac 10 50 to 60 Hz single phase Power required is approximately 65 watts 2 15 Selecting 115 or 230 Volt Operation 2 16 A rear panel two position slide switch per mits operation from either a 115 or 230 volt ac power source The number visible on the switch indicates the line voltage to which the instrument 2 1 Installation should be connected To prepare the Model 8407A for operation position the 115 230 volt slide switch so that the number visible on the slider cor responds to the line voltage CAUTION To avoid damage to the instrument set the 115 230 volt switch for the line voltage to be used before connecting the power cable 2 17 Power Cable 2 18 To protect operating personnel the National Electrical Manufacturers Association NEMA recommends that instrument panels and cabinets be grounded Accordingly the network analyzer is equipped with a three conductor power cable which grounds the panel and cabinet when plugged into an appropriate receptacle The offset pin of the three prong connector is the ground pin To preserve the protection feature when operating the Network Analyzer from a two contact outlet use a three prong to two prong adapter HP Stock No 1251 0048 and connect the green pigtail on the adapter to ground 2 19 Cooling 2 20 Clearances for ventilation should be 3 to 4 inches at the rear of the cabinet
191. odel 8414A Polar Display 3 3 OPERATING PRECAUTIONS 3 4 Maximum Input Power 3 5 Do not apply more than 26 dBm or 50 Vdc to the front panel reference or test channel DI RECT or ATTEN input connectors or damage to the input circuits may occur 3 6 Over Voltage and Transient Protection 3 7 Transients may trigger the 20V power sup plies over voltage protection This condition can occur if the power is on when a display unit is either removed or installed in the mainframe The over voltage protection can also be triggered when turning 8407A power on and off very rapidly To reset the 20V supplies turn the 8407A power off and allow a minimum of ten seconds turn the power on and resume operation If the over voltage protection has been triggered for an extended period it may be necessary to turn the 8407A power off for about five minutes 3 8 PANEL FEATURES 3 9 Front and rear panel features are described in Figures 3 1 and 3 2 Description numbers match the numbers on the illustration 3 10 INSTRUCTIONS FOR MAKING MEASUREMENTS 3 11 general operating procedure is given to show the principles of operating the network ana lyzer Since a number of input transducers may be used and a number of plug in displays are available no attempt has been made to cover all combina tions of instruments However the general test procedure given may be adapted for use with any input or display equipment For step by step instruc
192. oem EC rc tg CRI S12 20V EET oi ae de d L O Ah K CR4 d esee i l 20V b a locam 20v QC 2 REF CHAN ATTEN Service REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER eg OF ASSEMBLY Al IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN PIO A6 12 x 16 278 KHz REFERENCE xA12 CHANNEL SIGNAL 1317 _ 1 NOTE 1 THE DISPLAY REFERENCE NUMBERS ARE ADJUSTABLE AND MAY NOT BE AS SHOWN BUT WILL BE IN NUMERI CAL ORDER 2 SEE FIGURE 7 2 FOR MEASUREMENT CONDITIONS AND TEST SETUP TO OBTAIN WAVEFORMS AND VOLTAGES SHOWN P O A6 9 1 lt 278 KHz TEST I CHANNEL SIGNAL 7 REAR VIEW PROBE PWR REAR VIEW PROBE PWR REDUCE INPUT C1 6 C1 6 01 3 01 3 TO 6 Kl lt ON MASTER P O WI 20V 166 13 20V s REF CHAN ATTEN l CURRO rr Figure 7 31 Front Panel Assembly A1 and A2 Schematic Diagram 1 31 Model 8407A Service A6 TOP A6 BOTTOM AENA oue ORONO YY 23 Figure 7 32 Parts Location for Master Board 6 1 32 A6 MASTER BOARD
193. or rect line fuse rating Power Line Fuseholder Fuse should have rating shown adjacent to the number on line voltage selector AC LINE Power Cable Connector NEMA type with offset pin connected to 8407A cabinet Power requirements 115 or 230 Vac 10 50 to 60 Hz approximately 85 watts Figure 3 2 Rear Panel Features Model 8407A Operation TRANSMISSION TEST SETUP SWEEP OSCILLATOR NETWORK ANALY ZER 8601A OR PLUG IN DISPLAY 80908 8698B OUT HP8407A HP8412A 8413A OR 8414A X 107050 087 ALTERNATE 20 50 dBm power rest SETUPS SPLITTER OUT 2 SWEEP 60009 8412A ONLY UNIT 50 0HM UNDER TEST TERMINATIONS ON UNUSED PORTS UNDER TEST ay POWER SPLITTER HP 11652 4 60009 MATCHED AMPLIFIERS PART 11652A REFLECTION TRANSMI SSION KIT Figure 3 3 Transmission Test Setup Operation zero dB for the calibraton setting of the DIS PLAY REFERENCE switches Reconnect the unit under test into the test setup and make a transmission measurement The attenuation or gain may be determined by adjusting the DISPLAY REFERENCE switches to place a selected section of the trace on the calibration graticule The attenu ation or gain of the unit under test may then be read directly from the DISPLAY REFER ENCE switch setting 3 14 REFLECTION MEASUREMENTS
194. passes through emitter follower Q6 This de voltage is applied to the phase locked oscillator producing a correction in phase or frequency necessary to maintain a 278 kHz reference channel IF signal When loss of phase lock occurs the search amplifier produces a sawtooth signal that causes the 199 850 MHz oscillator to sweep above and below the crystal frequency When the sweep produces a momentary reference channel IF signal of 278 kHz the signal produces a de output from the phase detector which stops the search and locks the phase lock oscillator 278 kHz REFERENCE OSCILLATOR Q1 and Q2 form a crystal oscillator at 277 778 kHz The output is used to compare with the reference channel IF signal PHASE LOCK OSCILLATOR Oscillator Q15 produces a 199 722 MHz phase locked oscillator PLO signal The frequency may be changed by the adjustment of inductor L7 to center the capture range The frequency of the oscillator is controlled through the capture range by a dc signal from the phase detector This dc signal is applied to CR3 and changes the effective capacity presented to the circuit by CR3 This in turn changes the oscillator frequency and causes phase tracking between the oscillator and the RF input signal BUFFER Buffer amplifier Q14 is a grounded base configuration It provides isolation between the PLO and the variable attenuator circuit Isolation is necessary to prevent changes in the attenuator from reflecting into the PLO and pull
195. perating range is selected and the amplitude and phase response is observed over this 10 MHz portion Model 8407 A Maintenance TEST PROCEDURE TEST SETUP Table 5 3 Performance Test cont d SWEEP OSCILLATOR NETWORK ANALY ZER DIRECT DOUBLE SHIELDED CABLE WITH 50 0HM TERMINATION POWER SPLITTER lt EQUIPMENT REQUIRED Sweep Oscillator HP 8601A or Two double shielded Cables Part of 8690B 8698B Accessory Kit Plug In Indicator HP 8412A Two 50 Ohm Terminations included Power Splitter HP 11652 60009 with 8407A Part of Accessory Kit Part of HP 11652A Accessory Kit PROCEDURE a Connect equipment as shown in the test setup Adjust the sweep oscillator output level for 4 dBm Minus 4 dBm less the power splitter loss of 6 dB 10 dBm at 8407A input b Set sweep oscillator for full bandwidth sweep between 0 1 and 11 MHz Set RF blanking and markers off Set 8407A REF CHAN LEVEL ADJ switch to lower position Set 8412A BW kHz switch to 0 1 MODE switch to AMPL and AMPL DB DIV switch to 0 25 c Adjust 8407A DISPLAY REFERENCE switches and AMPL VERNIER control to place the 8412A amplitude trace on the center graticule line Slow sweep repetition rate until good trace detail is present The trace should be within 4 small graticule divisions 0 2 dB of the center graticule line 5 15 Maintenance Model 8407A Table 5 3 Performance Test cont
196. ra NMOHS 539 110 ONY SW3OJ3AVM seta NIYI8O 40135 1521 7 5 ONY SNOIL 8 10 10002 1NJW3H0S V3W 8032 2 3 913 335 7 P SAJAD 44 S1dfl S10 2 19 X3 18 08 1102812 NO ELY INI TIYISNI s NI 03179155 43808 1102312 SY 21 314922 m ASSY 539 10A ONY SWNO33AVM HV 7I 389 as SF 53 i f INI NOHYNOIS3O 114 C3IVAAEBdY dav 3 7593559 SNO11vN91S30 3933931318 S310N Vm cc NI ILO NIHLIA SNO Y NOIS3Q 128742428 M3lti1d AQ LIO 33M0d E E ES WON wap per r ot 915 5 92 2 AQ 0 ENSE lt lt d dAg T mE A 0 ye Td iq S 8 wap pe 8 E PES i E 4 EE lt CO Oz 2 0101 aue dE A2 Ol AUI f psp rl sgo F I d d AIG 26 9v 0 4 1 AWG 4 522 8100 08 M vb p T P TN xj bg 1200 1681 0916 p uni 918 y N el an 0200 68 m i 7581 01 j gt L Ae 1VN91S 350 14901 xu bi Tay T ZH BLZ OTT o nog 0200 81 4 DAN SHE ES s 4 y 4 i I l 5 NI O 80 wimod f 006 245 U 9 600 1v00 Us ore g WSIS Sep E 4
197. s C5 and C6 and inductor L2 FREQUENCY DEPENDENT GAIN AMPLIFIER The gain of amplifiers Q3 and Q4 is dependent on frequency It provides higher gain at the higher frequencies This is obtained by the time constant of C6 R12 and C11 R18 which bypass the emitters at the higher frequencies DIFFERENTIAL AMPLIFIER A differential amplifier is formed by the two sections of Q5 The stage is driven through the emitter by Q4 One base circuit sets the local oscillator level LO LEVEL and the other base circuit receives the feedback signal for leveling The bias on the bases of Q5 changes the effective collector load impedance of Q4 thus changing the gain of Q4 100 kHz HIGH PASS FILTER high pass filter is formed by C16 C20 and L4 and L5 This filters out any mixing products below 100 kHz providing a clean local oscillator signal X1 AMPLIFIER Q8 amp Q9 Q8 and Q9 form a complementary emitter follower with a gain of one The local oscillator LO signa at the output of Q8 Q9 is a leveled signal of fairly constant amplitude through the LO signal range Model 8407A A13 Figure 7 12 Parts Location for Automatic Level Control Amplifier A13 A13 ALC AMPLIFIER 08407 60002 FREQ DEPENDENT GAIN Xl X0 1 MHz X100 MHz DIFFERENTIAL AMPLIFIER X10 5 q 0 8 u SEC 5427 50 mV P P 8 2 VDC CTR R2 237 20 VF 1 LEVEL 2 0 8 u SEC ay awt Q1 C7 1854 0345 0 47
198. s an index of reference designations and abbreviations used in the replaceable parts list Table 6 2 is the replaceable parts list in reference designator order This list contains component description part number and other information necessary for ordering parts Table 6 3 provides code number identification of manufacturers BT CP CR DL DS ELECT ENCAP EXT FH FIL H FXD GE GL GRD Hol H dH M H H H Il Hl H H H Uo H H H H H H H H H l H H H W H H ff H H l 6 3 ORDERING INFORMATION Replaceable Parts 6 4 To obtain replacement parts address order or Inquiry to your local Hewlett Packard Field Office see list at rear of this manual for addresses Identify parts by their Hewlett Packard part numbers 6 5 To obtain a part that is not listed include Instrument model number Instrument seria number Description of the part Function and location of the part Table 6 1 Reference Designators and Abbreuiations Used in Parts List assembly motor battery capacitor coupler diode delay line device signaling lamp misc electronic part amperes automatic frequency control amplifier beat frequency oscilla tor beryllium copper binder head bandpass brass backward wave oscilla tor counterclock wise ceramic cabinet mount only coefficient common composition complete connector cadmium plate cathode ray tube clockwise deposited carbon drive
199. switch one position down 2 The DVM indication should be 50 mV Record the difference between 50 mV and the measured voltage as shown in the table below 3 Adjust the test channel input level 1 dB step attenuator at the test channel input 8407A DISPLAY REFERENCE 10 dB step switch and AMPLITUDE VERNIER control for zero 50 5 mV on DVM 4 Repeat the above steps to check the remaining 1 dB step positions 5 If the DVM indications are all out of tolerance on one side of 50 mV the difference between 50 mV and the mean of all the readings may be the display unit error Repeat this test using a second display unit calculate the mean and correct each reading to the difference between the mean and the measured value 5 10 Model 8407A Maintenance Table 5 3 Performance Test cont d TEST PROCEDURE 4 cont d Example of DISPLAY REFERENCE 1 dB step Accuracy Table Step dB DVM Indication Error in dB 0 0 Zero Reference 1 49 7 0 006 272 50 7 0 07 lt 0 002 3 3 49 85 0 15 0 003 9 9 50 Zero Zero The error in mV is converted to dB by the calibration factor of the output connector 50 mV dB Add algebraically the error of each 1 dB step to the total of previous steps For the example above 0 006 0 002 0 004 0 003 0 007 0 002 0 005 0 005 0 01 0 004 0 006 0 002 0 008 dB The total error is the difference bet
200. ted phase offset in 10 steps allows any phase angle to be read on the best resolution range of 6 The analog voltages can be used to obtain calibrated plots of phase angle and amplitude ratio against frequency on a conven tional dual trace oscilloscope or graphic recorder 1 30 Model 8414A Polar Display 1 31 The Model 8414A displays reflection meas urements impedance admittance reflection coef ficient return loss It displays amplitude and phase in polar form on a built in cathode ray tube and provides simultaneous voltages proportional to the amplitude and phase components of the dis play Frequency marker and blanking signals can be applied to the Model 8414A Marker signals spot intensify the trace for frequency reference while blanking signals eliminate the trace between sweep intervals when there is no RF power Sup plied Smith Chart graticule overlays permit impe dance and admittance to be read directly from the display 1 3 General Information 1 32 SIGNAL SOURCE REOUIREMENTS 33 The Model 8407A Network Analyzer is specifically designed to be used with the HP Model 8601A and 8690B 8698B Sweep Generators The 5601 sweeper covers the RF band between 0 1 and 110 MHz and the 8690B 8698B has a range between 0 4 and 110 MHz A signal from the inter nal voltage tuned oscillator in the sweeper is used as an integral part of the 8407A phase lock system The VTO sweeps between 200 1 MHz and 310 MHz
201. th the 8407A 1 dB step DISPLAY REFERENCE switch at the top position The accuracy of each 1 dB step is measured separately using the display unit 50 mV dB output The test channel input level 8407A 10 dB step DISPLAY REFERENCE switch and AMPLITUDE VERNIER control are used to establish a new zero dB reference after each 1 dB step By making each measurement over the same 1 dB range of the display unit any error in the display unit will appear as a constant error for each DISPLAY REFERENCE step and may be calculated out Model 8407 Maintenance Table 5 3 Performance Test cont d TEST PROCEDURE 4 TEST SETUP cont d SWEEP OSCILLATOR NETWORK ANALYZER B oc nee BNC TEE DOUBLE SHIELDED CABLE VTO AMPLITUDE OUT 001 POWER 0 12 dB STEP 50 OHM IN 50 mV dB ein ATTENUATOR TERMINATION DUAL TRACE A OSCILLOSCOPE De n DC DIGITAL VOLTMETER 9 EQUIPMENT REQUIRED Sweep Oscillator HP 86014A or Two Double Shielded Cables Part of 8690B 8698B Accessory Kit Plug In Indicator HP 8412A Two 50 Ohm Terminations included with Oscilloscope HP 180A 1801A 1820A 84074A DC Digital Voltmeter 3439A 3443A Tee HP Stock No 1250 0781 Power Splitter HP 11652 60009 UG 274 B U Part of Accessory Kit 0 12 dB Step Attenuator HP 355C Part of HP 11652A Accessory Kit PROCEDURE NOTE When using an 8412A Phase Magnitude Display Unit perform the low level adjustment as follows Make t
202. the unit under test to the port Make the reflection measurement REFLECTION TEST SETUP SWEEP OSCILLATOR HP 8601A OR HP 8690B 8698B DOUBLE SHIELDED COAXIAL CABLE x SHORT NETWORK ANALYZER PLUG IN DISPLAY HP 8407A HP 8412A 8413A 8414A ATTEN WITH 20 0HM TERMINATIONS ON UNUSED PORTS UNIT j UNDER TEST B 9 D 50 0HM COAXIAL DIRECTIONAL BRIDGE TERMI HP 8721A NATION PART OF 11652A REFLECTION TRANSMISS ION KIT Figure 3 4 Reflection Test Setup 3 6 Model 8407A Principles of Operation SECTION IV PRINCIPLES OF OPERATION 4 1 GENERAL 4 2 The Model 8407A Network Analyzer converts rf input signals to 278 kHz IF signals while retain ing the amplitude and phase information of the original rf input signals An automatic gain control circuit levels the common mode signal variations allowing accurate measurements of amplitude and phase difference between the reference and test channels The 278 kHz IF signals are applied to the input of a plug in display where the signals are detected and displayed on a CRT or meter as phase and magnitude information 4 3 The 8407A contains precision attenuators in the test channel to facilitate amplitude measure ments Built in input signal attenuators in both test and reference channels allow a wide range of rf input signal levels 4 4 A simplified block diagram of the 8407A is shown in Figure 4 1 A more detailed block dia gram is show
203. tic of A14 per attached Figures 7 14 and 7 15 CHANGE J Page 7 33 Figure 7 33 Connect together to a single ground XA8A pins 1 3 and 6 and XA11A pin 3 CHANGE K Page 6 12 Table 6 1 Change A13L4 to HP Part No 9100 1623 COIL CHOKE 27 UH 5 Recommended Replacement is 9140 0237 200 UH Change A13L5 to HP Part No 9100 1627 COIL CHOKE 39 UH 5 Recommended Replacement is 9100 1646 430 UH Page 7 13 Figure 7 13 Change A13L4 to 27 UH Change A13L5 to 39 UH CHANGE L Page 6 12 Table 6 1 Change 15 to HP Part No 08407 60003 and also change all of the associated A13 board components per the attached parts list If it is necessary to replace A13 it should be replaced with HP Part No 08407 60002 or 08407 60102 rebuilt At the same time A14 must be replaced with 08407 60123 or 08407 60107 rebuilt On A14 Parts List included with this appendix Add A14CR3 4 and 5 HP Part No 0122 0201 C VOLTAGE VAR 15 pF 10 30WV Delete A14C31 32 and 33 Change A14R16 to HP Part No 0698 7224 R FXD FLM 316 OHM 2 1 8W Page 7 13 Figures 7 12 and 7 13 Change parts location photo and circuit board schematic of A13 per attached Figure 7 12 and 7 13 I 10 Appendix I moj g 500 696 ON 10 98u7 onmuewog TTV 4aifyduy ODV 0 19 991 61 ANSIA I 11 Model 8407 A 136 03H21VW 0312335 A4012V4 Y 0301438 18 61 0 5 YAOI Tiv 0301438 18 OL 5031 55015 ISNVUI 3Hi 40 ANY
204. tion of Major Assemblies and Adjustment Points lroubleshooting Tree Test Setup for Troubleshooting Tree and Block Diagram Detailed Block Diagram Parts Location for VTO Amplifier Al6 VTO Amplifier 16 Schematic Parts Location for Local Oscilla tor Mixer A15 Local Oscillator Mixer 416 Schematic Parts Location for Automate Level Control Amplifier A13 Automatic Level Control Ampli fier A13 Schematic TM Parts Location for Phase Locked Oscillator A14 Phase Locked Oscillator A14 Schematic f Parts Location for Retcvence Channel Converter A3 Page 1 0 2 3 1 15 7217 Figure 7 17 Reference Channel Converter A3 Schematic I i 7 18 Parts Location for Channel AGC Amplifier 11 1 19 Reference Channel AGC Ampli fier A11 Schematic n 1 20 Parts Location for IF Bandpass Filters A9 A12 7 21 IF Bandpass Filter 9 amp A12 Schematic GM 1 22 Parts Location for AGC Feedback Amplifier 10 7 23 AGC Feedback Amplifier A10 Schematic m 1 24 Parts Location for Test Channel Converter A4 7 25 Test Channel Converter A4 Schematic 1 1 26 Parts Location for Test Channdl AGC Amplifier A8 7 27 Test Channel AGC Amplifier AB Schematic 7 28 Parts Location for Programmable IF Attenuator A7 i 7 29 Programmable IF Attenuator AT Schematic bo x 7 30 Parts Location for Front Panel Assembly amp A2 Schematic 7 31
205. tions using any specific plug in display refer to the Operating and Service Manual for that plug in Additional operating information for the Network Analyzer as well as error analyses of measurements is contained in the HP manual RF Network Analysis with the HP 8407A available upon request 3 12 TRANSMISSION MEASUREMENTS 3 13 To perform a typical transmission measure ment use the following general procedure 1 Connect equipment as shown in Figure 3 3 selecting one of the alternate test setups De termine the approximate signal levels at the reference and test channel inputs and select either the DIRECT or ATTEN input connec tor for each channel 2 Remove the unit or units under test and con nect both reference and test cables to the signal source for initial calibration If alter nate test setup No 1 or 2 is used connect the 8407A inputs to the outputs of the power splitter If test setup No 3 or 4 is used connect both of the 8407A probes to the input of the unit under test 3 Adjust the signal source rf output level for an indication in the OPERATE range of the REF CHAN LEVEL meter Be sure that the UNCAL REDUCE INPUT RATIO light is not lit If it is lit the ratio between the test channel and the reference channel signals must be changed The reference channel signal level may be increased either by the REF CHAN LEVEL ADJ switch or by changing the rf input cable from the ATTEN 40 dB connector to DIR
206. tor 2 1 20 V 20 Vdc Power Supply output 2 17 16 20V 20 Vdc Power Supply output 3 1417 PLO Adjusts frequency of phase locked oscillator for best swept frequency phase lock 4 A13R27 LO LEVEL Adjusts local oscillator signal level at reference and test channel converters 4 A14R47 PLO output Adjusts PLO output level Selected value 5 ASLI PHASE Adjusts phase tracking of reference channel converter 5 A3L2 AMPLITUDE Adjusts amplitude tracking of reference channel converter 5 A4L1 PHASE Adjusts phase tracking of test channel converter 5 A4L2 AMPLITUDE Adjusts amplitude tracking of test channel converter 6 A8R20 IF TEST output Adjusts IF test channel output level Selected value 6 A11R24 IF REF output Adjusts IF Reference channel output level Selected value 7 A4R58 OVERLOAD Adjusts overload circuit of test channel converter Selected value LEVEL to switch on at a selected signal level 0 19 Maintenance Model 8407A SETUP FOR ALIGNMENT SWEEP OSCILLATOR NETWORK ANALYZER HP 8601A PLUG IN DISPLAY OR 86908 8690B 8698 VTO OUT VIO INPUT 8407A _ HP 2A 84D5A POWER SPLITTER 3 TERMINATION DC DIGITAL VOLIMETER p 7 VERTICAL INPUTS EQUIPMENT REQUIRED Sweep Oscillator HP Model 8601A or 8690B 8698B Power Splitter HP Part 11652 60009 Oscilloscope 500 kHz 50 mV with 10 1 Divider Probe HP Model 1
207. tor signal with the RF input signal to produce a 278 kHz difference signal 26 dB AMPLIFIER Q4 Q5 and Q12 form an IF amplifier The overall gain of this amplifier is controlled by Q6 and Q7 Control input to Q6 and Q7 is furnished by the front panel REF CHAN LEVEL ADJ switch Each change in switch position produces a 20 dB nominal change in the test channel output due to the AGC amplifier action 7 16 Model 8407A Figure 7 16 Parts Location for Reference Channel Converter A3 REF CHAN ATIEN Al3 2 A3 REFERENCE CHANNEL CONVERTER 08407 60093 f 10 5 i LOCAL OSCILLATOR SIGNAL 20V OdBmNOM 5 us 1 1 0 237 Br 3 5 Lo 7 10 pias EE 5010 1854 0471 9 3 9 1 TN C6 CT 01 C7 0 1 uF R4 R6 R8 619 38 3 t 681 R5 1 33K 20V R37 825 20 L2 C16 0 1 0 2 uH 1 0 7 14 7V 1 R 20mV 01 5 422 1 REFERENCE 1854 CHANNEL INPUTS 0431 R30 R4 681 750 J C10 R19 R23 J DIR 4 1 0 71 15 38 3 RIS RI7 R21 R33 R3 192 5 192 5 96 25 38 3 2610 10 TO 90 dBm 5 c 80 20 dBm MAX 10 mVP P lt NNUS 10 dB ATTENUATOR 90mV f 50 dB ATTENUATOR R35 1 21 13 13 Cll R20 R25 R28 m WHTIBLU 1 0 247 5 71 15 247 5 Cs G R16 RI8 4822 JR2 12 R2 JR27 R30 JR31 R36 T 1 122 2 2122 2 561 1 296 25
208. ts Model 8407A Table 6 2 Replaceable Parts Reference p part Number Oty Description Mfr Part Number Designation Code 0490 0884 RELAY REED 28480 0490 0884 RECOMMENDED REPLACEMENT 0490 0884 RELAY REED 28480 0490 0884 RECOMMENDED REPLACEMENT 0490 0884 RELAY REED 28480 0490 0884 RECOMMENDED REPLACEMENT 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 28480 1854 0071 1854 0023 TSTR SI NPN SELECTED FROM 2N2484 28 amp 80 1854 0023 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 28480 1854 0071 1853 0010 TSTR SI PNPCSELECTED FROM 2N3251 28480 1853 0010 1854 0053 TSTR SI NPN 80131 2N2218 1854 0071 TSTR SI NPNOSELECTED FROM 2N3704 28480 1854 0071 1853 0010 TSTR SI PNP SELECTED FROM 2N3251 28480 1853 0010 1854 0053 TSTR SI 80131 2N2218 1854 0071 TSTR SI NPN SELECTED FROM 2N3704 28480 1854 0071 0757 0416 R FXO MET FLM 511 OHM 1 1 8W 28480 0757 0416 0698 3438 R FXD MET FLM 147 OHM 1 1 8W 28480 0698 3438 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W 284 80 0698 0083 0757 0438 R FXD FLM 5 11K OHM 1 1 8W 28480 0757 0438 0757 0416 R FXD MET FLM 511 OHM 1 1 8W 28480 0757 0416 0698 0024 R FXD MET FLM 2 61 OHM 1 1 2W 284 80 0698 0024 0757 0416 R FXD MET FLM 511 OHM 13 1 8W 284 80 0757 0416 0698 7395 R FXD FLM 3 8K OHM 0 1 1 88 28480 0698 7395 0698 7396 R FXD FLM 1 474K OHM 0 12 1 8 28480 0698 7396 0698 7397 R FXD 211 1 OHM 0 1 1 8W 28480 0698 7397 0698 3438 RsFXD MET FLM 147 OHM 15 1 8W 284 80 0698 3438 069
209. tt Packard Sales and Ser vice office listed in the back of this manual The exchange board will immediately be sent directly from our stock of service parts Upon receiving the replacement board the faulty board should be returned in the same special carton in which the new board was received Do not return a defective board to HP until the replacement board has been received 5 5 If a defective exchange board will not be returned to HP and the ordered board is for spare parts stock etc a new board should be ordered using the new assembly stock number listed in Table 5 1 or 6 1 5 6 MAINTENANCE PRECAUTIONS CAUTION Do not apply greater than 26 dBm RF power or 50 Vdc at the RF input connec tors of the 8407A or damage to the inter nal components may result 5 7 PERFORMANCE TESTS 5 8 The procedures in Table 5 3 test the perform ance of the 8407A These procedures may be used during incoming inspection periodic evaluation or after repair or alignment The test may be per formed without access to the instrument interior The specifications of Table 1 1 are the perform ance standards 5 9 ALIGNMENT PROCEDURES 5 10 Alignment procedures are given in Table 5 5 These procedures should not be performed as a routine maintenance procedure but should be used 1 after replacement of a part or component 2 when the performance test shows that the speci fications of Table 1 1 cannot be met or 3 when instructed to do
210. ween the maximum and minimum values In this case total error is 0 01 0 004 0 006 dB The maximum error allowable is lt 0 05 dB 1 dB step and a total error of lt 0 1 dB DISPLAY REFERENCE 10 dB STEP ACCURACY SPECIFICATION Amplitude accuracy is lt 0 1 dB 10 dB step total error does not exceed 0 25 dB Phase accuracy is 0 5 10 dB step total error does not exceed 3 de grees DESCRIPTION The equipment is set up to obtain a zero dB indication zero volts on DVM and zero phase indication on display unit with the 8407A 10 dB step DISPLAY REFERENCE switch at the top position The accuracy of each 10 dB step is measured separately The test channel input level and 8407A AMPLITUDE VERNIER control are used to establish a new zero dB reference and the 8407A PHASE VERNIER is used to establish a new phase reference after each 10 dB step By making each measurement over the same 10 dB range of the display unit any error in the display unit will appear as a constant error for each DISPLAY REFERENCE step and may be calculated out Maintenance Model 8407A Table 5 3 Performance Test cont d TEST PROCEDURE 5 TEST SETUP cont d SWEEP OSCILLATOR NETWORK ANALY ZER lt 9 DOUBLE SHIELDED CABLE 3 AMPLITUDE somVidB CALIBRATED DC DIGITAL VOLTMETER POWER 0 120 dB STEP SPLITTER ATTENUATOR ap 6 IL EQUIPMENT REQUIRED

Download Pdf Manuals

Related Search

Related Contents

BeTwin 2000/ XP User Manual  Cooper Lighting Metalux 8I5355 User's Manual  Hoover VHC 680F Clothes Dryer User Manual  AFFILIATION F.F.M. MOTO CLUB DE TOURISME  JOINDRE UN RIB - Télépéage Liber-t  UM INV222  Samsung BF1OC4T212 Manuel de l'utilisateur  MANUEL D`INSTRUCTIONS - TA Triumph  Wormhole Switch JUC100 －New Version  Betriebsanleitung Colorado - bei Karmann  

Copyright © All rights reserved. Failed to retrieve file