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PM6690 - Fluke

Contents

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10. 10 E 8 7 5 Y 5 3 3 z 1 21 INTERNAL REFERENCE rear panel LV W BNC COAX D46 l R509 R510 BAV99 R506 4 7K utat 423 470 470 1 8 4225 EXTERNAL R512 1 17 HIND R583 1 ARM NG M nan ph 1 H ise IN rear panel
11. xu U126 our H 4 gt 3 3VA 6 8 SENSE H mH vTap R482 R483 FB L csee _ I REG ASK ss 10N 100 6 3 ERROR 5 1004 6 3 GND 1 LP2951CM doe 1K 4 1 52V gt 52 5 5VU R504 R508 R602 R454 R455 R456 R457 R458 5vu R45
12. 5 3 3 z 1 122 SPICLK 12 SPIDATA 3 3V_PLL UATA R269 2 SPIPLL USA 2 R270 2 OVEN OSC ON OFF cp L2 gt 2 47 LVC1604 REM 10K 12 DATA C168 c169 L53 LOAD PLL 1 R272 220 ee UGA RO Sle aN IN 3 3K R274 Nt Xo 3 3V_U4 100P gt V REFIN 1 BLM21A102S 2 MUXOUT
13. 5 4 3 T C496 R132 TRG_LVL_A 5 2 5 10PF 250V RR Ret m 5 2VM 5VAI Cas C100 C101 m 470 T T 100NF 1 2M 010 Di D12 D13 12VI 5VAl 3 9pF 500V gt gt gt 04 DH D 1 BAV99 BAV99 BAV99 BAV99 C104 sa R135 C106 L L 10N 2 2UF 6 3V 9 REAR PANEL INPUT A lt 4 Bis RS 8 RIS 30 2 5 10PF 250V B
14. O O O gt Pag g E gt BI 2 gt gt al al aye P C al al al 5 8 ae 2 n O R574 9 g 358 E E HE O m Ul U16 Fe m e D BERE zaj 0 8 CI CI CI EM a 2589 U17 C R579 C431 B4 C415 8 4 8 C488 E gj 5 2 5 E 157 C490 2 E
15. J28 Erst 5563 135 254449 6559 eu R55 CIS w pol C a sige CL gt C510 R509 CI Ele ale BIE 5 9 54 Read _ 2547 GRIS E G amp 436 9 65555575438 _ a pug 5 8549 C434 1514662 530 165295 0536 TE 2533 C429 al a R531 E Elea CI Roads 054 ICI 4305 C e E Main Schematic
16. 5 3 3 z i __ gt 0 23 1 3 3VCPU 00 31 1 CKE 1 GLK 1 7 cs 1 RAS 1 R425 988 cas 1 10K 50 gt 0 DO E DQM 0 3 1 TRST A pe Ra DZ 5 E E 5 n2 A 510 4 gt 3 3VCPU 8 8 a RID A4 D4 U54A 53 2 5 05 Pe U17A D31 DF31 D15 2 DF15 R20 D6 47 2 47 21 pod AT A6 D6 Nie D7 AO P mm DO D30 _ 46 bed 180 0630 014 46 A 180 DF14 A20 21 22 23 10K 07 DE D25 A 5 025 0135 44 5 0 I TDI 9 DB Bis D8 m bz 028 4 128 18 6 __DF28 012 4 ia bed 6 R629 R6
17. OPA277 100NF C370 u133B css ADG719 T 10n R 0 3 AD 1 10 2 2 2 2 gt gt gt gt 159 8 R 2 2 6 6 ANAL HINT R505 R481 R484 R485 T 028 1 gt ADA 1K 1K 1K 1K 85543 20557 R513 M08 R507 RS __ DB1 22553
18. m ES 1 27 X6 E iz E 25 8 EL RS 5 R14 rzz C 419 25 25 a lal Raag Raed Rae R441 434 Rus gt S S Raad 040 S 245 042 038 R62 3 03 8296 GN REISS Re94 5 M5 M6 M8 9 10 22 R610 ee 5135 3 keedkusg 2 oie S p33 gt 2 RI4O R141 2 R 4l R 6 0 S gs ele 5 cud 7159 8148 pe m 8 gt zo 61036102 Z 185 R167 gt 5 E HoH SBE R143 R144Ri59 R174 D15 8 6160 C 9 07 Riel ro fo fon 7 oh 01 przejej 06
19. 5 3 3 z i 31 A O 23 U15A U16A 2 07 2 17 a A 24 4 pfe A voz bz A2 102 pis 3 3VD 3 3VMEM1 26 26 aH vos 29 A3 2 27 39 4 104 1g D5 5 104 io D21 AP 5 V05 56 E 5 105 D22 6 vos 11 07 AT 31 1 vos 11 523 AB AT vo7 13 58 AE AT vo 12 023 AS AB 1 08 55 AS AB V08 D 3 3VMEM2 34 44 34 vos H ATO 45 010 A10 45 026 BLM41P800S AT A10 42 071 A 010 42 527 gg Piz 38 11 won 41 28 6 5 12 1012 013 12 1012 EN 0 0 MA zg 1013 013 20 20 537 483VMEM1 A 1014 DTE A 1014 D 21 1015 1 1
20. gt 2 2 4 C196 E I m mw e m BI 5 8 W 4 gt N jol In Fo W gt 5 C C Figure 6 16 Important locations in the internal timebase reference circuits J28 po gii soleo R371 p E EN 2 ez EB 19 376 mE bas 450 c DO 5 35 19 7 Cn gt B 55516 L35 410 5 85446443 554 aise C257 E R55 w En cie G 8 CC 4 gt A XII A 6 Je3 4 L 72 C403 us sod gt 2547 R560 a gt GND 9403C gt C524 R Road 036 841186436 4 U33 5 ROASTS GND eal 80556578644 p EJ 5 R397C33 R olo 409 356 40 RI Bo
21. i 5 8 2 AD 1 10 R B B gt gt gt gt L59 R505 R481 R484 R485 E e R 9 12VINT 20A 1K 1K 1K 1K 028 BLM21A102S 20 9 62 So 330 33 550 LL C507 mE BF513 R524 19 mam 6 8u 16V i Roe 100NF VIN DB2 AD4 DB3 R375 R376 R379 22 S vner Bes 18 05 4 7K 82 7 vREF 085 15 457 I 1 U42A 4 ADT o 086 1 5K 4 4 nee C324 pgs O COUNTER CIRCUIT C325 R378 Ras 3 56 11 010 W 029 80 RDYO ERRPO 83 iA BFT92 KM4100 C323 100NF WT RO 15 uzo 95 Not Used 47 BFT92 47 Not Used 4 Pear RDY2 RESO 38 R634 97 RDY3 58 R381 2 2K 100NF cso 100 1 R380 U132A RDO 98 4 8 L 2 ADCDATAO Rp1 68 m EI ADCDATA1 ERI R633 30 ADCDATA2 U21 EA 2 2K 26 C327 R382 a 31 ADCDATA3 REST 6 ADCDATA4 SH1 gt R515 3
22. ZER 2606 Fe 29 em E E gl a XII 0478 GP R74 0473 E 0986 gl BJ IE d L 19 L 466 R59 Lie gt Red 8468 R467 5 EEE 2 93 5 055 S Raed 646 45 g 75 g 8455 R454 68 6 a 0480 EJ 07 5 L y Red ES 3 LEE gt sel igi 0130 6224 1 D E Sed 07 2 51050 wa L57 c490 C c 5 1127 62 gt amp 8289 6223 494 E Sd A as evs RM 444 j TEXT SEIN GND m BI 274627 R56 C492 2 m R amp LO O G 1771 23 1171 498 L Z 049 Yolo Rage s Red 2 2842 03 5 023 R358 c C40 4 R i SE C07IC 3 Pale 493 T e 16 4 x26 Read 0354 E 5 c 5 22 L4 ST Kou CI79
23. 5 2 3 z 12 SPICLK gt 12 SPIDATA ML ATA M FETU USA al 4 5 OVEN OSC ON OFF CE 2 d rf T Lvc1G04 Lon A 153 10K LOAD PLL 12 DATA C168 C169 R272 220 RARR UGA c170 LE 1N TN FOO ex R275 3 3V_U4 T 400 8 1 4 g REFIN 5 t mes MUXOUT OVEN GC 6 STD OSC ON OFF RFINA C173 1M 100P STD GC RFINB 10N 12V0 OPA277 FS S RSET FLD 100N Bi T 9 ADF4001 ro D amp 4 ir amp C176 m D ALVCOO R278 R279 T 1 1H 47K PLLLOCK 6178 CI C180 2 2K USA 33PF 22PF 22PF 33PF 47 C 100NF ALVCOO mE i R281 CV Out 525 VRef RFb 2 1 2 SMv 1266 078 8 10 M97 60 08 T C181 lout 2 1K PHASE LOCK LOP CLK 6182 R282 R283 L 33PF C183 100P 1 2 5 15 _ UTA zu 2 2UF 6 3V 47 47K R284 R285
24. Modify Date May 28 2004 Bheet of Schematic Diagrams 9 45 This page is intentionally left blank 9 46 Schematic Diagrams Chapter 10 Appendix How to Replace Surface Mounted Devices Most of the components in this instrument are mounted on the surface of the board instead of through holes in the board These components are not hard to replace but they require an other technique If you do not have special SMD desoldering equipment follow the instructions below Figure 10 7 Attach the IC to the pad with solder Figure 10 4 Solder all leads with plenty of solder don t worry about short circuits at this stage Figure 10 1 Heat the leads and push a thin aluminum sheet between the leads and the pca Z Figure 10 5 Remove excessive solder with desoldering braid Figure 10 2 When removed clean the pads with desoldering braid Figure 10 6 a strong magnifying glas to make su
25. 6 35 D RD A RW MMA WR CS pem Chi A Chi X 1 76V Figure 6 36 Microprocessor bus FPGA timing Single Pe riod 6 24 Troubleshooting Important locations for the microprocessor and its buses and interfaces RD D A CS PPP POSE POT vee Ch 1 00 100 40075 Chi 174V Figure 6 37 bus FPGA timing Power On AO NOGA ea paru n tma M nt tra Yim aae WR WR RY bo HN RD RD p u OCENE GPIB DIR AC NA AAA D ejusque D AG n AG Wm sei i M M M C
26. ES Do xed 1 RI 3 x27 em 8 O aid 28 s E374 3 C 0439 438 R424 Rae 2441 m m 5 ais Fol e Ra Rie Rag ARa U4 17 I EJ 241 oe E 5 5 R627 8 5 gt x29 WE ALE D gt R3 ARE ES Q5 6479 2470 FE oR R296 RER SIBI GHEE HE B GEJE 55 55578 551578 6 m e Mz gt ReAl 0 2095333 Eo 5 _ 6 8 9 ek 020 E 8 24 R ead 24 Ble 5 Z keedkade 231 gk amp 8 268 gt 3 Eeo c R199 26 EI X34 eins pan ef 5 5 21548 SE 5 RIED 5 Reeds ie 726 es SEE 9 RASA S Gli yo k L 2 E 5 LC gt 2109 24e Em ae 73 5189 S Ef 2324 5 R15
27. 5 4 3 2 1 LL MD 31 1 MNAD 21 1 3 3VCPU cs 1 __ 249 GLK 1 12 27PF CKE 1 T3 WE 1 R355 67 p AJO 21 a R357 3 3VCPU 4 2 3 224 U17A y MAO LVC125 MI A0 100 t E SAT Vot 1 MA 5 A2 102 Te SDA 15 JTAG M ye e 24 103 mE 52 15 COMET T ua 5 MAS A4 1 04 R615 100 a 5 8 5 105 ET 4 x 0 eu AB 106 U13C L Ea 15 D MDT 107 gt Hi LVC125 M MAG 8 108 Th SDA 22 e 100 FANCTRL 7 R360 X59 2 119 MA3 MATO AB vo9 175 ROGPIB SCL STDOSCTRM 6 17 10K MD4 MAT 7 10 1010 180 154 18 4 T utc M05 M MAS MATZ 11 1011 IRQUSB PWM 8 32 16 19 MD6 154 05 AS 7128 MAS 5 12 1012 1 1 ROKEYB PWM 12 SPICLK 16 107 06 A6 128 7 1013 Ms ie MDS MAB MATS 14 1014 CPU SPICLK SPIDATA 1 6 LVC125 MES AB MAS MATS A15 1015 SPIDATA 244 SPIDATA 16 2 105 0 9 4 A16 DIN 1 10 MAT 19 4
28. C4 432 52 C416 46 B4 ren 564 533 R534 C415 C431 6468 506 R494 0662
29. 9 22 Schematic Diagrams Display 6 Keyboard PCB 2 BASIC BOARD uic 100nF gt LM358 gt LM358
30. MDJO 31 AJO 21 U15A U16A MDO MD16 MAG 24 0 2 01 MAG 24 0 voo 2 517 Vot MDZ A 101 5 18 MATT 26 2 Voz MD 26 2 102 MD19 A3 H A3 yos HE 29 8 4 MA12 29 8 020 39 4 1104 Tig ap 4 104 Miq MDZI AB 105 M66 31 5 105 4 MD22 15 AB 106 MDZ 15 106 13 MD23 vor MDE AT VOT 42 MD24 MA17 8 108 774 108 MD25 MATS 9 109 MAIS 109 026 A10 1010 A10 1010 47 M611 MA19 47 MD27 20 1011 ia NDT 20 von 28 S A12 vo12 4 fd aiz 1012 28 7599 013 20 MDT MAG 013 54 MD30 Ma 20 Bao 1014 51 MC MAT Bao 1014 SLypgq MAT 1015 MAT 1015 MAO CAS 8 RAS 8 1 RAS 3 Z CKE CKE 38 CLK s LDQM 5 LDQM UDQM UDQM WE WE 5 CS 452816320 452816320 5 4 82598 m Lae 5 El Not Used R297 DOUT MD 0 31 0198 Not Used 7 B pour Not Used DN 40 MHz Not Used on R300 20 24 3 3V0 2 RB LOCK
31. 2 5 gt 8 a E B ES ce Rag gt 2 2 Raai Raal e R Rael Raed E C371 Raj 245 Jj 20 BI Reed 043 039 040 044 045 157 A pu Raed CC GEJE 473 E470 55 FIE RI Re96f 2 32 ale WAS CC m GEE sl C 5 REJS S S K EE 00945 08 333 317 5 M6 M9 CC 15313 R610 Ris 336 gt V11 EJ 3 eed GNI LC e 1813513 o mo 3 mm Een 5 C253 ce m gt S BIS T 347 R140 R141 lt RE w gt 35 210 LIO R si FS SIE 02 EQ SI cng 34 63 1C 2278155 SE 1578151 04 Rud Ps LS E gt o wi m 023 a 424 2 185 167 8 ie 1916 53 5143814459174 eLO 07 Riel 51 8 gt 06 328 Ule R 2 2328 i 23 O agaaa CI J EIS 5 a m R158 Fo FA R34 12 R3ief R344 S GRES el H fad BREE Blo E Baa m cng 8 A
32. 5 gt 3 z 1 gt R132 R133 R134 TRG_LVL_A z x 2 5 10PF 250V SA 5 5VM 100 c99 v L co CI 470 102 470 10N 100NF d r4 100NF D10 Dt D12 pis 12VI 5VAl B t gt DHA DI 1 E Lt c104 R135 C106 BAV99 BAV99 BAV99 0105 2 2UF 6 3V d R136 R137 9 REAR PANEL INPUTA lt R138 400 gt p D14 015 10 2 5 10PF 250V BAT18 18 Ste m NOT USED MINICOAX 3 5 Ed R140 R141 R142 K2A 1K R143 R144 K3A c109 R145 3 a lt 100NF R146 4 1 t 1 gt BF513 4 yo 47 470K 120K 2 002 m fe BFROSA 680K 220 BNC COAX ce R148 R149 R150 47 So m esok cit 22NF 200V a R154 112 a RE BFR92A R183 5 1 5PF 500V 47 47 ee me 1 5pF soov 3 10PF ena lt 100K Ris7 6 24 M OUT M R156 4 R167 ADCMP56 i R273 R158 R159 470K R160 R161 52 R162 R163 R164 R165 R166 120K 1M 100K p 47 p L 33 m 120 120 120 120 150 LL BFR92A 115 R168 R169 R170 4 R171 R172 47 R173 88 3 9pF 100V A 116 R174 1 1 BFR92A T 07 cia R175 R176 R177
33. s INTERNAL BNG GOAX REFERENCE rear panel BAJ J22A R509 510 8 V99 1 U131 1 VBus USB 123 470 ao _ R i Le 3 LA CONNECT CR 4 SE R512 2 avbL 4 I IN rea Ix SHON gt CHE BNIGCOAX 10PF BAV99 pug MAX961 84 mfes I gt 2 GMHZ Tac 4 S ussa NOT USED x Do ae apo CLKOUT 45 s pi D2 a DS D4 4 INTREF 05 06 30 129 07 29 06 57 C gt NN SRO 15VRO 5 D8 USB BLM21A1028 DIO 24 09 5VPO 513 010 130 R525 rmm 22UF 35V DIZ 011 47K 013 21 012 1467 12VA gt YYY gt 12VRI D14 013 BLM21A1028 HCT126 050 015 19 8826 L31 C424 R527 BYD17G LO X 053 35 67 gt 3VRI 100 4 7UH 1 47 Brom m 42 ALE int 15 5 BLM21A1028 Uns C427 C428 R529 R530 4 CS R5 33PF 82P 3 3K 4 7K 5 C429 40 pzy am T NOT USED mt RB 12567 5V0 gt A gt 100NF 22K SUSPEND gt psa S R536 DACK prec 41 12 2 _ 134 _ NOT USED BFG16A 051 47 BYD17G amp p 4 21 1025 5 BUS_CONF1 x
34. gt PROGN R564 FILTER_A 330 5VD cun 10N R418 2 2K R419 1 038 8C807 25 da L39 asm gt IMP A 21 1025 5VD 100NF R421 22K 3 3VD Re 1 807 25 da Lao gt ATTA R423 R424 21 1025 4 7K 474 C472 100NF R426 55 1122 BC807 25 dax Lat AY gt AC DC A 21 1025 5VD C473 100NF R430 ma 22K U40A 4 Je L4 BC807 25 100 1 142 1 A0 1002 6 gt 2 1 100 3 BLM21A102S 2 1004 3 1005 100 He 100NF 1007 SDA 101 0 43 H4 V012 H Rees 101 3 1 FILTER_B 1014 330 101 5 48 1016 H 5VD C475 101 7 10N INT H PCA9555 m R434 22K R435 4 Je 042 BC807 25 6 8K 2244 gt BLM21A1028 5VD C476 100NF R437 22K R438 4 243 BC807 25 6 8K 00 gt ATTB 21 1025 100NF R440 ga 2 2K 4 044 8C807 25 146 gt AC DC B T 21 1025 C478 100NF R443 2 2K R444 4 045 BC807 25 146 6 8K gt gt 9 VY gt coms 21 1025 can 220UF 10V VDD g 9408 C372 PCA9555 T 100NF
35. xed xe4 xed R602 25 20 zo BI BI BI Eo BB 2 a X 0472 8 8474 R473 LI 0305 193 C386 BI S m bel x R464 R599 Lie R468 467 759 GND 5 EEEE ro 584 M462 R461 mi 153 SS 8 Lal 8455 R454 z 6488 Ras 384 U7 LLL 479 Z R9 R8 ns 158 M U130 2 1 gt Bg 5 u 1050 tg E 571 C490 Z E 10086223 5 imi KC h 744 5708273 2497 kl GND mw BI gt 627407 566 492 z m 049 04 je L3 16171 6499 E gt SY 2448 5 409 FT c Re7g E pu3 5023 5 213 m 4 079 080 REA R C187 88 le 5 C168 co i ciej RS 6224 C354 m E S BE md EH 14 79 BIE mp e C184 A 219 ro lcs OJO Reed ied GND Resi 9351 u25 Rad m Gi R586 mes c R587 201 Raag A 2 my R48 C196 zz WE eda Hi C393 29 gt C388 55 ja BJ 5 EE 3 6887 C407 gt C S E U124 No Ww W No C376 127 X6 mj
36. 619 18 9 44 Schematic Diagrams Display 6 Keyboard PCB 2 BASIC BOARD uic 100nF gt LM358 LM358 4 1 TP1 R20 Rt D Pa 15 0 17 6V 10uH bf 10BQ030 47 c4 C18 C19 l c20 4 7uF 35V R3 4 7uF 35V 3 3V 22uF 6 3V TT 2 2uF 35V 4 7K nF c5 1 1M LM358 gt TP2 yi R5 4 2 w mu Hi REGsw LR 21 d 2242 VIN DO 10 BLM21A102S CTRL 470K TAG R35 odu ad GND PGND Hk c6 100nF 2 SSE EEN Not used 22222555080 5 222222 M Not used a FPC 20 LM358 TP3 R10 R13 10 ne R R N2 1 820K 100K 2 Y pu 320X97 DOTS gt R15 20 28F 35V x TM32097AGFG s U1B 2 640 mm 10 100nF m R33 32 4 7K LM358 n us noorxos o 2sss SESS28888885852
37. Figure 6 71 Important locations on PCB 1 during startup voltages The range is 14 9 V to 17 5 V measured at X1 on the bration results to new factory calibrations The serial display board Set the contrast so X1 is 16 2 V Check the number and the oscillator option must also be pro LCD voltages at X2 14 7 V X3 13 3 V X4 2 9 V and X5 grammed by the utility program 1 5 V See Figure 6 72 The FPGA U11 is programmed by the processor The used pins are PROGN INITN DONE X65 Clock and Data See O Figure 6 75 The loading starts when PROGN is set low Then the processor checks that INITN is low and sets PROGN high again The FPGA responds by setting DONE low After load ing which takes approximately 1 4 s the FPGA sets DONE high check X65 if the loading was successful If an error is detected INITN is set low One clock pulse after DONE is set high all I Os on the FPGA are defined If the loading of the FPGA is not successful the program just goes on with the rest of the startup procedure At test point X67 the FPGA will out put approximately 14 Hz This signal shows that the FPGA is working and will be switched off about 8 minutes after power up 1 The fan is set to 8 4 V Measure on J19 or J28 The input am plifiers are initialized and a click from the relays i
38. xo 0126 pe our H gt 3 3VA 6 8 SENSE 2 SHDN R482 R483 396 x50 R449 393 REG 33 OM 6394 10K 100uF 6 3V ERROR 5 mmm 00uF 6 3V R584 ERROR 2 I GND 4 2 OFFCTRL zek 4 LP2951CM A 47 R486 1K or X 5V 215 ark V x23 amp L 4 52 5 gt 52 5 LVC74A V R593 ONCTRE 1 1 1K R594 R598 R602 R454 R455 R456 R457 R458 T 47 C380 0389 R478 R466 R453 XI 1M 1K 1K gt 10 10 10 10 10 10 10 10 _ R452 R592 R595 R599 R603 R461 R462 R463 R464 R465 1K il 058 gt 4 he BC847B sim 1K F 10 10 10 10 10 10 10 10 C387 159 2 7 R600 R604 Rer R468 R469 R470 R471 mmm 22UF 35V 2 4 R479 868478 1 4 1 GND R460 x 1 33K 22UF 35V p w 10 10 10 10 10 10 10 10 ABI I I 220 il R597 R601 R605 R473 R474 R475 R476 R477 IN out 1 5 4 4 gt 52 6 RABO GONE uzec LM2991S 470 92 10 10 10 10 10 10 10 10 5 LVC74A gt 1 4 6 8 gt 42VA 1 4 6 8 R446 R450 R451 D AIA 5V gt STBYLED 2 1456 gt 15 330 A 0123 EH I 21 4 R447 0385 Raso 386 5 046 22UF 35V 22UF 35V 8C8478 X38 REG 1 226 EUTAB 5 R448 15V IN OUT 4 m zza 1 29915
39. 0084 C488 58 493 se 157 C490 gt IC223 494 H gt Bs Re74Re7 R568 G 177123 1017 491 C498 SY 5 89 gt a Eb _ EIAS coal 55 169 A z e 176 S L4 E C184 2219 1 x24 gt 5 6 ESEJ AUle7 1 68 5755 0258 lt 5754 E953 C27I C33 024 124 224
40. m Rezgkeef A AS E IRIRE ee Sl 3 4 087 5 6812155 LJ de Lis CC 169 14 e C408 E u 5 c 5 6220 amp FE P cz s C84 ka BIE 0299 GND Read 3 2351 54 249 098 m 258 Fel Fo RS8 Bl BI R 8 6 8 5 5 196 8 R589 E CI 8 8 ot CI lt B R35 f lt 8 T5 gt g o gt 5 2 al 89 6 6 5 LE Ule4 p gt wj kol a _ B a X6 Ead x2 E E I xe c 8 O EN i ks 5 _ E 1088 GH Ra Ras z R 43d 22 pae U40 4 C Rud E U26 t 1281 8 U24 5 1634 BE GE 0 po R43 Rael Raed 6440 18 R44 Rad 1 TI A mra R627 B gg E 2 le ke 157 9 Ex K Qj X6 x pu R3ed ekg 051 473 6470 sae 07 Rae SIE PELE EEEE Elea GND GIER RE el Reg 5 R341 066m 5d 1 2 MS SUE Figure 6 4 Important power supply locations 1 Troubleshooting 6 7 OFFCTRL gt ONCTRL POWER ON RESET CKT LVC74A
41. ARA 2608 LEJ XI LI Mie 169 24 253 ud E R170 24151 A z 154 5 Cie 130 5 4 164 C163 5 A 2 610016130 _ S 9NDO OO uei Seno o 52 C104 s E 18 5 3098 2248 8010 csa 26d 262 C155 RA 04 5 C123 055_ C3 626452 012 081009 cued E 8 5 Clee 1274 574 Reed 154 5 2 2184 CZ gt a 06 175 z cia RBIS 460 1208 ou 2639 I 5183 co 017 a 110 50 6 I 5 113 4x 62 D20 ral 09 d y mela 5 o LE RAK zab ul 8 R201 SCG p _ gt S 0225 8 9 6 0 K7 ras R2544 A urs 154 24 FB e m 8 ca 5 i 8 5 22 K6 d 2 oflc 2475 z E C25 C496 024 2 C2 1C5 C _ E R163 9176 5237 2250 c99 91402 RI7S 5 ke B SE m D34 BIL gt cz z ez ces D3 I C23 Ih 1 T Figure 7 2 Test points and trimmers for the inp
42. 5 4 3 2 1 PREKODO 8 PREKOD1 8 PREKOD2 8 gt FILTERA 3 330 5VD c2 Y 10N 10N ale i D R418 2 2K R419 86807 25 5 6 OPCLK EE 1 2 6 7 8 3 3VD lt gt IMPA 3 2 SCL PRESCALER ivo BLM21A102S PREKOD2 2 SDA CONNECT CR 231 100NF 10N PREKOD1 PREKODO 6 PRESC TEST 2 2K R422 2 039 6 5 6 8K L40 _ _ gt ATTA 3 e BLM21A102S C472 L c248 12678 5VD 100NF T ton 2x10 SMD R426 2 2K R427 c 6 U39A BC807 25 5 TMP 6 8K L41 BURST 6 A2 4 4 gt ACDCA 3 1 OS BLM21A102S SDA 5VD SCL C473 C249 __ _ 100NF 10n LN75 R430 2 2K R432 U40A 1 Fon BC807 25 1000 V00 1 H 88 EL 6 OPCLK 1 A0 1002 9 4 lt gt 3 1 2 6 7 8 3 3VD 1 1003 2 SCL H BLM21A102S 2 SDA 100 5 L 0232 voos 0 100NF 10 100 7 H 2 SCL 22 2 SDA 4 23 spa 1010 1 lt 01 1 15 R565 1012 18 101 3 gt gt 3 014 HZ 330 1015 8 6 OPTION 1016 H2 5V0 C475 2 10N 15VD INT HX 9555 m m R434 12678 5V0 2 2K R435 2X10 SMD W 2 BC807 25 R428 6 8K L43 C gt MPB 3 NOT USED BLM21A102S 5VD C476 100 R437 a e 147 Rasa 1467 12VA gt a gt 28 3 1 v LM cago 21 1028 Gs 144 al 1 8VFPGA 400NF 1 1 gt 3 C423
43. 2 m 9 O R574 ZEE Z 3 ie a GE gf EA Jo e le Bi ma 355 g Ta bs ka al rs i TAR 2 T ud ES EE mE 9 B a i VI gt Ut30 gs 1 gt 31 gt 160 AWF E ks B i 0407 z gi Uie4 3 em d 037 S 3 5 eu p s Ema 2E el CE b o 1 ra kata caso les o ASB AH 5080 Bi ang 1 JIS gg z s Figure 6 88 Important locations for the microprocessor and its buses and interfaces OEP RD WR CS M2 000s Chl X 1 76 V Figure 6 89 Microprocessor bus FPGA timing Single Pe riod Hold after Restart 6 52 Troubleshooting GPIB DIR OEP 2 00 V B 1 1 1 1 zai V m AM Chi 2 00V IV 2 00v 1 00 6 Chl X 1 76 Figure 6 90 Microprocessor bus USB timing Power Figure 6 91 Microprocessor bus GPIB timing Power On u sedis START 1 PEN i i 1 INTERPOL DIE 1 EMPTY CS FPGA RD 200 di 2 00V BEDA Oas A chi X Figure 6 92 FIFO timing Block 5 Single Period 10 MHz Troubles
44. Figure 3 1 Terms used in this manual The PM6690 can be equipped with a number of options and accessories Built in timebase and prescaler options can be identified by pressing USER OPT About on the front panel The following built in options exist or are planned Option PM6690 6__ 3 GHz RF Prescaler Input Option 6690 7 8 GHz RF Prescaler Input Option PM6690 _5_ Very High Stability OCXO Option PM6690 6 Ultra High Stability OCXO The location of these optional parts is illustrated in Fig 3 2 and Fig 3 3 Rear Panel Inputs bcd Led EJ Supply Basic Board 6 gl RF Inputs 3 GHz amp 8 GHz Input Amplifier e Optional Oscillator I Figure 3 2 Interior layout including 3 GHz or 8 GHz prescaler option 3 2 Disassembly Removing the Cover Figure 3 3 Interior layout with 20 GHz prescaler option Removing the Cover WARNING Do not perform any internal ser vice or adjustment of this instrument unless you are qualifyed
45. Schematic Diagrams 9 19 This page is intentionally left blank 9 20 Schematic Diagrams Rear Panel Interfaces and I O PCB 1 sheet 7 7 gt EXTCTRL 6
46. 6 32 Fae i ces 3 3 General lec cece ei Ea ER ES 6 32 Prescaler 3 3 Power 6 32 OCXO Options 3 4 Input 6 36 22 22 Timebase Reference Circuits 6 40 E Circuit Descriptions Prescalerz oes vx espe Gade S adve ed 6 43 22 dd P e Dac c ee ius Microprocessor 8 Memories 6 43 A Microprocessor Bus amp Interfaces 6 49 General s cise tiene cheated 4 4 Measuring 0 6 55 Block Diagram uuo eR taie 4 4 ae Safety Inspection and Test After Repair 6 59 Hardware Functional Description 4 6 General Directives 6 59 C TEA E TRD T 2 ceu 4 6 7 Calibration Adjustments des en ere Exe BO ZEW 4 10 Calibration 7 2 Version B x ee ee CR b Pa 4 11 General Principles 7 2 Block Diagram Description 4 12 The Calibration 55 7 3 G EODEM 4 12 bin nme Frequency 22 55 eb RE E 7 3 ni 980800 NOSA Voltage Reference 7 5 Hardware Functional Description 4 14 Calib
47. ON H OFF L ONL V OFF H R453 1K R592 1K 058 220 A amp B are control signals to PSU Switches and dummy load Figure 6 6 ON OFF logic Input Amplifiers The input amplifiers for Channel A and Channel B are identi cal A trigger level circuit belongs to each amplifier The trig ger level is adjusted to match the hardware during the voltage calibration procedure see Chapter 7 Note that the input am plifiers must be adjusted according to Chapter 7 step re sponse sensitivity etc The description refers to both chan nels Channel B information within parentheses Recall the timer counter default setting Select the measure ment function Time A B Set both input channels to DC Man Trig 0 000 V No signals connected The RF shield must be removed before measuring on the input amplifiers It is soldered to two ofthe shield clips Don t forget to put the shield back afterwards and secure it by resoldering First measure some DC values U3 pin 9 pin 13 should be near 0 000 V The same applies to the trigger level U3 pin 10 pin 12 The voltage to ground at the point where R171 R243 and R172 R244 are connected should be approxi mately 0 8 V Connect a 1 kHz square wave with amplitude 1 Vy in 1 MQ to Input A Input B Measure at the following points see also figure cc and use the ground pads that are distributed
48. 152 Instructions for Firmware Upgrade 5 2 1 2 Utility Program a pad wa met ees 5 3 PAR Cc C ZSZ 12 Fan Replacement rer 5 3 Other Important Information 5 3 2 Performance Check 6 Repair General Information 2 2 Version A 6 3 Test 2 2 6 4 Preparations 2 2 6 4 Front Panel C0 V0 I5 2 2 Power 6 4 Short Form Specification Test 2 4 Input 6 8 Rear Inputs Outputs 2 6 Timebase Reference Circuits 6 12 Measuring 2 6 6 15 Check of HOLD OFF Function 2 7 Microprocessor 8 Memories 6 15 RF 2 7 Microprocessor Bus 8 Interfaces 6 21 Measuring 6 27 3 Disassembly Mersion B usse cele Ave een aa ae 6 31 Removing the 3 2
49. Lowpass Filter BNC Cables 5 to 7 pcs of suitable lengths Table 2 1 Recommended equipment for calibration and per formance check Preparations Power up your instrument at least 30 minutes before checking to let it reach normal operating temperature Failure to do so may result in cer 2 2 Performance Check General Information tain test steps not meeting equipment specifications Front Panel Controls Internal Self Tests The test programs forming the self diagnosis can be activated from the front panel as follows Press USER OPT Press Test Press Test Mode Select one of the six tests available by pressing the softkey below the label with the name of the test func tion Five of the tests RAM ROM Logic Display and Interface are individual They are briefly described be low The sixth named performs all five individual tests in sequence All all tests performed in sequence RAM test of RAM memory ROM test of ROM memory Logic test of counter ASIC and other logic circuits Display test of graphic display module Interface test of GPIB and USB Press Start Test If a fault is detected an error message appears on the display and the program halts Note any error messages If no faults are detected the instrument returns to the normal measurement mode Keyboard Test See Table 2 3 This test verifies that
50. 127 mam C488 8 I C480 4 22UF 35V 100NF 5VU IN a out H 4 gt 1 2 5 6 8 C395 cn 100NF GATE GND gt VD 12 568 dis MIC2505 6 570 8571 R572 R573 R574 p FROM AC DC 5 x x39 100 10 100 100 NOT USED gt POWERON POWER SUPPLY Bl D gt 5 1 5VU 1 R579 R575 R576 577 R578 15K 100 100 100 100 5VU BVA gt gt 5VA 1 4 5 6 640445 6 100 580 4 EL 056 BC807 25 3 3K R581 XM X45 BCP54 C397 47 100UF 6 3V U128 L28 gt PVIN sw gt 3340 12 5 68 SW2 Hi 4 3UH BEZ GEJ SVIN sw3 gt 33VD 12568 A REG 4 R487 ZE C398 C399 9492 0483 gt 4 470K 100uF 6 3V 220UF 10V 100NF 5 2 26000 4 R488 2 pan 12 SGND PGND2 330K 15K 401 163412 150K 1N 100P R616 x62 15VU X5 820 X X5 I I 5VU 86051 5 2VI gt L19 I d 1 gt H5VD 58 C411 gt 1 8V 100NF 7T a C412 4 3UH Rags 6 8K gt U118 R497 1 x x7 1K us 100UF 6 3V m REG x 8 p 2 A R619 SHDN 40 5572 o 8499 t 1 our ope gt naa 1 4 56 4 Ri a 5 COMP PGND ai REG H 4K REF R500 0406 2 SE gt 2VA 1456 LM358 4 1927 1 JE 1K R501 4 TUF 35V ECNDGND 220UF 10V 33K
51. Figure 7 6 Adjusting the 3 GHz RF prescaler 7 14 Internal Reference Oscillators Chapter 8 Replacement Parts Introduction Note There are two variants of the main PCB Version A and Version B Refer to page III for closer information Standard Parts Electrical and mechanical replacement parts can be obtained through your local service organization or representative How ever many of the standard components can be obtained from other local suppliers Before purchasing or ordering replace ments parts check the parts list for value tolerance rating and description If the value of the physical component differs from what is de scribed in the parts list you should always replace the part with the same value as originally mounted NOTE Physical size and shape of a compo nent may affect the performance of the instrument particularly at high frequencies Always use direct replacements unless it is known that a substitute will not degrade the performance of the instrument 29 28 27 Figure 8 1 Case 8 2 Replacement Parts Introduction Special Parts In addition to standard electronic components the following special components are used Components that are manufactured or selected by Fluke to meet specific performance requirements Components that are important for the safety of the instru ment Both types of components may be replaced only by components obtained throu
52. 2 4 W Warning Statements 1 2 Watchdog SEE Internal Reset Circuit Index 11 3 This page is intentionally left blank 11 4 Index
53. 198 9194 463 9 384 O uen Figure 6 69 Important locations in the internal timebase reference circuits 6257 7 JIE E 264 253 R374 Je8 60601 3153
54. Figure 6 48 Important locations for the measuring logic 6 28 Troubleshooting _ _ 1U21 8 ERRP R416 Hist ttn 4 44 44 arii eri m 1 bebe de v m 023 8 U23 8 w mm waw ma _ _ 1 00V _ 092 2007 M20 0ns Chl J 600 M2 00us Chi 1 48 1 007 1 00V Figure 6 50 ADC 1061 behavior Time A A 10 MHz in Figure 6 52 Close up of error pulse and S H output ree U 1 Irae papa dw AA INT pin 2 S H pin 3 pin 4 CS pin 5 RES R414 ERRP R416 U23 8 E _ _ Chi 1 00 2 007 M2 00us Chl 600mV Figure 6 51 Different signals around an ADC Troubleshooting 6 29 222212271 IOdHALNI LYVLS IOdH34LNI O lt KE LLN Len L IOddALNI 3015 Oen 0 TOdHALNI AV I IC V IAIDHL 91 GE 5 SHHAIHQ 5 5 LNdNI LELN Wav Measuring logic block diagram Fi
55. RUBI CI UM RB LOCK R299 WRN 3 3V_U4 12 Not Used 3 V4 Ki CSETND 2 R298 RESETHER Not Used C199 4 IRGET 10MHZ_RUBIDIUM 20 000 15 Not Used 2X10 SMD R302 NOTUSED MINICOAX3 T Not Used 508 GATEOUT 5VA xia 5VD SDA 156 3 3VD SCL POWERON gt sk U38A TRGLVL PE SIE BLM41P800S AO A1 3 3VICI C320 99 8 A2 SPIDATA 100NF 36 1 75 i o s 3 3 3VD SDA TRGLVL A 1 12VA dle 12VA ANA 2 5VA TRG_LVL_B Iv r bvVREF 4 TRG_LVL_A 127 3 5 PLATED BLM21A102S R445 15K 5VTR R10 i 12 V T 22K 100 10K Y Y 220359 U24A 100NF FI LT1009CD R566 i 1 2 2 288 C 83 DAC OPA277 100NF gt 277 100NF gt 277 100NF FBA 100 C375 4 1 L i is NOTUSED nF 5VTR L 1NA 0460 x A 5 CL upo H 12 Bar 377 3 3VMEM 3 8 ts DAG I iu 3 3 7 7 Din 0 AM L 15UF 6 3V 10K 10K MAXS U28A C310 2 1 L 315 C316 C317 5VTR 100NF 100NF 100NF 100NF me 100 100NF U46B ESI l 1 e DAC H FBB LT s 100 T OPA277 8888888 U15B 8888888 gggg utea Re 1nF z nor USED o 6 U46D 2 5 50aaaooooooo0 gt gt
56. TP1 R20 Rt 01 15 0 17 6 V 10uH bf 10BQ030 03 a C18 c19 l c20 took 4 7uF 35V R3 4 7uF 35V 3 3V 22uF 6 3V mm TT 2 2uF 35V 4 7K c5 R 1 1M LM358 gt TP2 x R5 vo 2 4 1 1 zi REG sw 3 VIN DO R7 10 BLM21A102S CTRL 470K 10005 TAG R35 e 485 GND PGND 100nF A R6 SET TPS61045 4 Not used 222229 2288555 222222 Not used L gt 20 LM358 TP3 R10 R13 10 RB 6 1 1 I 2 7 C nia 1 l 820K 100K gt 4 x 320x97 DOTS TM32097AGFG nS U1B L Gag 10 100nF m R33 E J2 4 7K LM358 n ux noorxos o 2sss SESS28888885852 20 R16 3 4344 4484 sss 1 gt EE 2 10 RIK l c24 92 C12 vo e mmm 22UF 6 3V m 100nF LM358 TPS R18 O gt v4 R19 10 c25 U2B L cis 47K 005 22UF 6 3V 2x10 SMD 20 19 18 17 1 16 15 14 13 12 3 3V 11 10 L2 q N 8 i 7 Ed Le 29 AGES 9555 88880088 88888888 1 4 Sod dda STDBY GATE TRIGB TRIGA D2 D3 04 05 EL4141D gauco Eseo V EL414GD si s2 o o o o t MEAS FUNC AUTO SET uP Leoa 1 c16 mm 22uF 6 3V s4 s5 56 57 58 o o o o
57. 88 22 01 100NF 7 A1 ATN ATN gt 4 A A CNTRL AN 76 10 SRO 100NF 4 9 P TADCS 21 GPIB 57LE LADCS 00 DACS D1 U41B D2 BBUS 1 03 ABUS_OEN 20 H 3 3VRI 5VPO D4 05 REM HCT126 Do Fro bv 30 R523 8 3VIF 09 20 1 07 TRIG GET 2 14 D8 INTR 24 D 19 1K gt RDY1 d D10 uses U41E ar gt ibn in 4 __ LMH6624 HCT126 5VGP 33VC H D12 KEYRST be 9 amp 100NF B D13 KEYDQ H A 5 4 D H 014 98 gt 2 HCT126 AVCOD 21015 0064 5 0466 468 C469 R563 on 100 100 100NF 100NF TNT4882 IK 8 3VRI amp 4 d U41D 2 ara 26 ALVCOD 92 BTESTS xm aocaacaca TAA 8 g 877 7009 888200 52 222598888 0000000009009929999929999 gt 555 222555 6666666666666666666666666 56666666 HCT126 6453 9 uszc 99 u33E amp 100NF 56 LVC74A gt 6 ALvcoo 1 ONE R ALVCOO 5 1 3 1 5 Diagrams 9 21 Display 6 Keyboard PCB 2 Component Layout 98 5
58. The counter does not measure Apply one single pulse to Ext Arm Input The counter measures once and shows 10 MHz on the display Measuring Functions Connect a 10 MHz sine wave signal with approx 1 Vrms amplitude into 50 Q via a power splitter to Input A and Input B e g from 10 MHz Out on the rear panel Recall the DEFAULT settings Select the following settings for the timer counter via INPUT A and INPUT B 50 impedance for A and B MANual trigger Check that the timer counter performs the correct mea surement by displaying the result as shown under the Display column in Table 2 8 Select function via MEAS FUNC Check of HOLD OFF Function Recall the DEFAULT settings Select Period Single A Select the following common timer counter settings for both Input A and Input B via the hard menu keys INPUT A and IN PUT B 50 Q impedance DC coupling MANual trigger x1 attenuation Press SETTINGS and activate Hold Off Select Hold Off On and set the Trigger Hold Off time to the minimum value 20 ns Connect the rear panel output marked 10 MHz OUT to Input A ncrease the Trigger Hold Off time in steps by means of the UP cursor key and note the results If Trigger Hold Off time 100 ns the result is about 100 ns 1 6 the same value as without Hold Off If Trigger Hold Off time 7100 ns the result is about 100 ns Trig Hold Off tim
59. 1 3 3VD C479 100NF 10K R3 10K R4 10K 15 6 OPCLK 20 12678 3 3VD B SDA 17 PRESCALER PREKOD2 16 CONNEC R E 15 PREKODI 67 5 2VA 5 PREKODO HH 11 6 PRESC TEST 1H 8 6 PRESCON 1 1467 12 il LC 12678 5V0 1 2X10 M0 gt 6 R431 BURST 6 9 ne 6 OPCLK 20 12678 3 3VD 19 12 SCL 12 SDA A 15 67 5 2VA 1 ja x5 10 6 OPTION 7 5 78 15VD 5 I2 12678 5VD 1 2X10 SMD R428 BURST 6 NOT USED L47 1467 12 gt 8 BLM21A1028 100 146 5VA gt 3 PLMZIA1028 100NF 149 DO gt 5VBI 3 caga 21 1025 100NF 7 5 2VI gt 5 2vAl 3 PLMZIA1028 100NF m 151 CY NO gt 5 2VBI 3 PLMZIA1028 100NF Schematic Diagrams 9 15 This page is intentionally left blank 9 16 Schematic Diagrams scillator Circuits PCB 1 sheet 5 7
60. 1 2 6 7 8 330 4 3 3VD 8999999999999999 gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt COUNTER CIRCUIT 2 1408 Uses PEASESS LM75 10n ZZZZZZZZZZZZZZZZZ 5 4 3 2 1 Schematic Diagrams 9 37 This page is intentionally left blank 9 38 Schematic Diagrams Oscillator Circuits PCB 1 sheet 5 7
61. A S kasa Un 7 Figure 6 58 Important power supply locations 2
62. Calibration a wa crimes 7 2 Closed Case 4 7 4 15 6 12 6 40 Command Reference 7 6 General Principles 7 2 Preventive Maintenance 5 2 Procedure Timebase 7 4 Voltage 7 5 Test Equipment 2 2 Caution Statements 1 2 Circuit Symbols 9 2 CMOS Logic Levels 6 4 6 32 Communication Interfaces 4 9 4 17 Component Numbers 9 2 Crystal Oscillators Adjustment 7 14 Calibration ss ses 7 3 D Default Settings syst 2 3 Display Description 4 6 4 14 Electrostatic Discharge SEE ESD EMI Filter Location of 4 9 4 17 ESD og woz 10 3 Ext Arming Input Performance Check 2 6 Ext Ref Input Description 4 8 4 16 Performance Check 2 6 External Arming Input Location 4 9 4 17 External Reference Adjustment 7 13 Input Location 4 9 4 17 3 3 5 3 Fan Control Description 6 7 6 35 Firmware Upgrade Instructions 5 2 11 2 Index Index Frequency Range Performance Check 2 4 Front Panel LCD Drivers 4 6 4 14 G GPIB Communication Location of Connector 4 9 4 17 Gro ndindg 1 2 Hold Off Function
63. 0805 403100227010 R263 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 532211712508 R334 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R264 RESISTOR 27 Ohm 1 0 1W 100PPM 0805 403100227090 R335 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R265 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R337 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R266 RESISTOR 000 Ohm 0 1 100 0805 403100200000 R338 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R267 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R339 RESISTOR 150 Ohm 1 0 1W 100PPM 0805 403100215010 R268 POTENTIOMETER 100 kOhm 3304X 1 104 212236200842 R340 RESISTOR 270 Ohm 1 0 1W 100PPM 0805 403100227010 R269 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R341 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 532211712507 R270 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 8342 RESISTOR 820 Ohm 1 125W 100 1206 532211682264 R271 RESISTOR 220 Ohm 1 0 1W 100PPM 0805 403100222010 R343 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 403100268090 R272 RESISTOR 3 3 kOhm 1 0 1W 100 0805 403100233020 R344 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 403100268090 R273 RESISTOR 120 kOhm 1 125W 100PPM 1206 482205151204 R346 RESISTOR 680 Ohm 1 0 1W 100PPM 0805 532211712509 R274 RESISTOR 1 MOhm 1 0 1W 100 0805 403100210050 R347 RESISTOR 22 Ohm 1 0 1W 100 0805 532211712507 8275 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R348 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R276 RESISTOR 47 kOhm 1 0
64. 59 3 9pF 100V R243 R244 R245 68 68 x 014 015 Cus R246 R 1 BFR92A 1 BFT93 NOT USED MINICOAX 3 5 R247 R248 R249 R250 R251 3 8pF 100V 12K 47 120 120 120 120 150 LMC6081A Pod JA C150 aed 39pF C151 d C152 100NF 470K Gone TE R255 R256 R257 4 te 4 10K 220 1K L2 R259 ONY C155 w 5 2VBI 27 zu 4 1 22NF 200V L ct PCB Pattern C157 A 128 C260 C22 10N 5 2VBI Not Used 27PF 1 12VI 1M 1 R263 R264 TRG LVL B TRG_LVL_B FILTER_B 016 LVL 1 TRG_LVL_B FILTER R266 7 BFR92A 1 1 3 ird 0 330 27 100 5 C158 159 5 ATTB pid 10N 100NF 5 IMPB 4 4 D35 D36 D37 KSC C239 C240 KIC C241 KBC C242 paves UD2 10N We UD2 10N 99 Up2 1o 99 UD2 T 10N 4 4 4 4 5 2V gt __ lt lt _ L54_ 5VAl 5VBI 5VAl 5VBI J 5 5VAI 5VAI BLM21A102S 5 5VBI 5VBI L C161 7 C163 w 5 5 2VAI 5 2VAI ES C165 U2B L C166 usoc 1 c19 2 ZUF G SV 665 565 2207 63 5 5 2VBI 5 2VBI E 100NF gt LMC6081A 100NF gt TLEZ022C 10N T 4 52VAI a BLM21A102S 5 2VAI 5 2VBI 5 2VAI 5 4 3 1 Schematic Diagrams 9 33 This page is intentionally left blank 9 34 Schematic Diagrams Interpolators PCB 1 sheet 3
65. 8514 SHDN CONNECT CR 4 LE 2 ip 470 10PF 1 5K D48 47 4 BNC COAX BAY GND MAX961 R518 C415 C416 L USBTYPEB 22PF 22PF 15K gt NOT USED p gt IRQUSB 2 6MHZ 9 U34A E 2 e PREKODO 38 ADO 45 9 5 PREKOD1 rab 5 PREKOD2 4 02 03 DF4 32 DF5 31 D4 DFS 0 129 DF7 06 mE DFE 07 Usp UMIE 57 150 15VRO 15VRO T T t t DFS D8 09 BLM21A102S 5VPO EAM ca22 D10 COUNTER CIRCUIT L30 f 100NF R525 m 22UF 35V DF12 DU R590 100 AA 4 7K 6613 22 012 150 u24 H 1467 A2VA DOn 12VRI DFi4 013 25 D14 u26 122 xS LATA R526 L31 C424 R527 050 gt 015 TH Hits L32 3 053 BYD17G 39 c17 Ann 3 3VRI BFG16A 42 15 100P 187 67 3 3VA gt 3 400 4 7UH 1N 47 I R531 22 ALE INT 029 BLM21A1028 bung ds 5529 5580 4 C cer us 33PF 82P R 48 RD GPIBDIR 1 PS T 1 R533 T ws 12567 5VD 5VPO BUMBTATGES pd 100NF WAKEUP SUSPEND 9 RZ m EXTREFCTRL 189 5 R536 100 12 1 22 22 EXTREF INTREFOUT 201 gt pu 054 10 DACK HH PULSEOUT gt GATEOUT CA aiir T BFG16A D51 EST 47 BYD17G 6 vsus p 4 R591 BLM21A102S 5 150 L35 17 05 x18 SpartanllE 2 P R537 1 12 567 gt 7 gt 3 3VEC 10 GL RESET BLM21A102S R538 L36 120 3 3VIF RZAD S
66. Consequently calibration does not necessarily include the next natural step in the procedure i e adjustment in order to make the instrument meet the original specifications The calibration procedure for these instruments also implies automatic adjustment so if you want a continuous history re cord you should follow the simple rules of thumb below that summarize the basics of all calibration frequency as well as voltage Place the instrument in its calibration environment preferably at an ambient temperature of 23 2 C and power it up Let the instrument assume its final internal operating temperature Allow at least a warm up period of two hours before proceeding Measure the deviation and record the value Use ref erence source whose uncertainty is at least an order of magnitude less than that of the DUT Model 90 90 90 Option Standard PM6690 _5_ PM6690 _6_ Timebase type UCXO OCXO OCXO Total uncertainty for operating temperature 0 C to 50 C 20 95 confidence interval 1 month after calibration lt 1 2 x 10 lt 2 x 10 lt 0 7 x 10 3 months after calibration lt 1 2 x 10 lt 4 x 10 lt 1 2 107 1 year after calibration 1 2x 10 6 x 10 1 8 x 10 2 years after calibration lt 1 5 x 10 lt 1 2 x 107 lt 3 6 x 10 Typical total uncertainty for oper ating temperature 20 C to 26 C 20 95 confidence interval 1 month after calibration
67. 4 4 3 09 UD2 1 T II 1 BF513 1 aio 47 470K 120K 902 Am m BFROGA Ls BNC COAX a 680K 220K uD2 RS m 2 5 KA ca C143 22NF 200V ben an 9228 T he BFR92A 012 R225 1 ie L 34 Not Used 92 LC 1 5PF 500V 47 47 LC 8 1 5pF 500V 3 10PF C146 UD2 Loo 1 gt B 6 400K RS 2 our 20 xs 227 OUT gt 6 R258 R231 R232 470K a R227 To gt ms T 2 ADCMP5G R234 R235 R236 R237 R238 120K 1M 100K 47 m 33 z 120 120 120 120 150 Ex hy m E z RAR R243 R244 47 R245 68 pF L BFTe3 6 K 014 d je NSE NOT USED MINICOAX 3 5 LI R247 R248 249 R250 R251 m 120 120 120 120 150 3 9pF 100V LMC6081A SAR 4t Pg JA C150 C151 ER gt 100NF b jos C152 470K R255 R256 R257 te o 220p 10K 220 1K 2 1 ag ae 5 4 4 5 2VBI 5 2VBI PCB Pattern C155 mlm FIM 2 2UF 6 3V m A R262 10N R260 R261 C260 C22 5 2VBI 470K 470K Not Used 2 1 TRG_LVL_B B 5 FILTER B FILTER R263 R264 1M R265 E COMB t FILTER B ate TRG LVL B 5 ACIDE B mes 11 t 1 BFR92A 1 1 5 gt T 1 cue 9 C159 4 4 m C160 10N 100NF 100NF C235 C236 0237 C258 034 9 _ 037 KBC C242 10N 10N 10N 10N BAV99 BAV99 99 UD2 10N 100K E 4 Ly A
68. Description CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 220HF 20 10V 0810 SMD CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 220HF 20 10V 0810 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 10pF 5 SOV NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V 0805 CAPACITOR 10pF 5 SOV NPO 0805 CAPACITOR 1nF 20 50 X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 1001 6 3V CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 82pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10pF 5 SOV NPO 0805 CAPACITOR TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 2 2pF 0 25pF 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15pF 5 50V NPO 0805 CAPACITOR 15pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V
69. GPIB 57LE LADCS cet R541 DACS U41B 10K BBUS_OEN H 8 ABUS OEN 3 43 3VRI CPUACC 4TK REM HCT126 FIFO_RDY 3 3VIF TRIG 34 INTR RDY1 te U41C 0338 m 4 100 6452 gt LMH6624 amp KEYRST 9 z amp gt 100NF 5VGP 3 3VIF 21013 KEYDQ V 7 304 gt IRQGPIB 2 HCT126 015 0184 asy 6466 C467 C468 C469 R563 100NF T 100 100 1 100NF TNT4882 U33C 10K C505 _ H g 4 3 3VRI 5VPO 100NF 100NF Lis 9 4 96 4 412 A o 0909 Fogg U34B U37B K U33D 5 P 9 Egg ISPI181B TNT4882 999 0388 HCT126 2 g9 uszc 99 usse cio uate 7338068 us7B gd amp pt 100NF 56 LVC74A 5 6 ALvcoo 100NF 26 HCT126 gt 6 1 2 I 10 E 8 7 5 5 3 3 z i Schematic Diagrams 9 43 Display 6 Keyboard PCB 2 Component Layout
70. a Ch2 7 E d ps A hr KI Figure 6 101 Different signals around an ADC Figure 6 103 8 Reset Troubleshooting 6 57 222212271 IOdHALNI LYVLS IOdH34LNI O lt KE LLN Len L IOddALNI 3015 Oen 0 TOdHALNI Measuring logic block diagram AV I IC V IAIDHL 91 GE d 5 SHHAIHQ 031 5 5 LNdNI LELN Wav Figure 6 104 6 58 Troubleshooting Safety Inspection and Test After Repair General Directives After repair in the primary circuits make sure that you have not reduced the creepage distances and clearances Before soldering component pins must be bent on the solder side of the board Replace insulating guards and plates Safety Components Components in the primary circuits are important to the safety of the instrument and may only be replaced by components obtained from your local service organization Check the Protective Ground Connection Visually check the correct connection and condition and mea sure the resistance between the protective lead at the plug and the cabinet The resistance must not be more than 0 5 Dur ing measurement the power cord should be moved Any vari ations in resistance shows a defect Safety Inspection and Test After Repair 6 59 This page is intentionally le
71. ei C GND BEG 59 m e a gt 3986340 79 45 2414IC349 354 C359 369 2 ce 2 S m 2 L I Uee 2165299 C424 152 6 XC LI CI 945 C4307 Jel Figure 6 17 6 14 Troubleshooting Important locations in the external timebase reference circuits locked and the VCO will go to one of the extremes The typi cal range of the VCO is 95 to 105 MHz thus giving an error of typically 5 in the measuring results Check the loop voltage DC at R272 It should be 1 6 2 2 V Check the 100 MHz signal at U48 4 It should be locked to the incoming 10 MHz at U9 8 Check the lock condition with a 2 channel oscilloscope Trigger on the 10 MHz channel Then the signal on the other channel shall be fixed i e not moving along the time axis Check the PLL LOCK signal at U9 14 lock is high Prescalers The optional prescalers are not to be repaired The faulty unit should be sent to the factory and an exchange unit will be returned The best way to isolate the fault is to use another functioning timer counter with the same prescaler Interchange the prescalers and see if the problem follo
72. 5 C36 in H 8 E x38 15 VU 54 C313 SEM _ ale 9 z 43 12 VA a g 0499 x40 15 0 ru C288 4 E z corse x4 R gae 8 12 VU LANE 3 1 5 IX css 8 Sas X64 40MHz cuc CE C500 30 57 X41 433VA C C317 578 C m SVD gt lt 44 5 0 JTAG zy 3 3 3VD 1 X47 x57 IMS 423 esq 300 leva 294 X58 E 291 394 57 WE 566 30 29 29 299 X63 5 2VI 575 g B 8 JE RI 9 io a o 1 8V a 8 SR EA ASS X49 FAN S m J BS gt S sa S 5 080 27 chad J7 U 53 584 Eee LE LL 2278 5 0 2 I6I EXT REF w gt REF 2 07V Lo REF 138V J9 gt
73. Figure 6 8 Oscillogram showing the signal at the interconnection of R140 R212 and R141 R213 Troubleshooting 6 9 O O WLK 200 M 400115 A Chr X 0 00 V Figure 6 9 Oscillogram showing the signal at the interconnection of R156 R229 and C109 C140 Ww UTI U L v SATAM TR TB ZE MA ADT ME DEN TINI TUNI LAT NE NT RA UNT GT UNIT ST R WET TRE RO EO PO rat PCIE PO 200mV Ni 40015 p Chr X 0 00 V Figure 6 10 Oscillogram showing the signal at U3 9 03 13 6 10 Troubleshooting OO SWE SS SS GR GE SG GG O GG GE A GG LSA U EA 200mV 400 5 Chi X 0 00 V Figure 6 11 Oscillogram showing the signal at U1 2 U2 2 GiM 7 A Chi X 800mv Figure 6 12 _ Oscillogram showing the signal at X6 Period Single A Troubleshooting 6 11 100 100ms X 800 Figure 6 13 showing the signal at X7 Period Single B Timebase Reference Circuits The measurement reference is either a 10 MHz signal from an internal oscillator standard crystal oscillator or optional oven controlled crystal oscillator on the main circuit
74. Microcomputer circuitry GPIB interface USB interface External reference input External arming input The rear panel unit is made of aluminum with a number of mounted connectors a fan and a power line inlet with filter Most connectors are soldered directly to the main board NOTE Schematic diagrams in this chapter are simplified For complete information see Chapter 9 ON OFF MEMORY FLASH 8 MB SDRAM 32 MB KEYBOARD LCD MICROPROCESSOR ARM 7 io SPI 100 MHz PLL gt GATE LED MEASURING LOGIC EM gt TRIG LEDA gt TRIG LED B DISPLAY BOARD y INTERPOLATORS 4X 3 EXT CTRL IN INT REF OUT REAR PANEL CONNECTORS Figure 4 1 Block diagram of the 90 Block Diagram Description 4 5 Hardware Functional Description Front Unit The front unit consists of a front piece in molded aluminum a silicon rubber keypad with conducting contact surfaces a graphic LCD with LED backlight and a PCB having etched gold plated keyboard contacts and a dedicated LCD power supply Display The display isa 320 97 pixels graphical LCD with LED backlight The LCD controller is part of the processor and it sends data and control signals to the drivers in the LCD mod ule Display ON is controlled via the bus and the keyboard IC The LCD voltages are generated by a DC
75. Use the following command sequence CAL DEL INIT OPC CAL DEL START OPC SYST ERR check for errors CAL DEL STOR Timebase A reference frequency with adequate accuracy must be con nected to Channel A Timebase calibration should be per formed regularly at intervals that depend on the timebase it self and the user application Read more about the procedure under Frequency Reference below Voltage A sequence of voltage levels from a dedicated calibrator must be applied to Channel A and Channel B Voltage calibration should be performed regularly if the user application calls for traceable voltage measurements Read more about the proce dure under Voltage Reference below Restore You can make a stored set of calibration data either a user set or the factory set the active calibration If the previous active calibration was a new user calibration then it will be lost Frequency Reference The frequency of the reference crystal oscillator is the main parameter that influences the accuracy of a counter External conditions such as ambient temperature and supply voltage affect the frequency but aging is also an important factor Note that frequency adjustment only compensates for devia tion due to aging Some important points The two optional high stability oscillators type OCXO have been built into an oven to keep the oscillator temperature as stable as possible Continuous operation is also important f
76. gt ONCTRL POWER ON RESET CKT LVC74A ON H OFF L ONL V OFF H R453 1K R592 1K 058 220 A amp B are control signals to PSU Switches and dummy load Figure 6 59 ON OFF logic Input Amplifiers The input amplifiers for Channel A and Channel B are identi cal A trigger level circuit belongs to each amplifier The trig ger level is adjusted to match the hardware during the voltage calibration procedure see Chapter 7 Note that the input am plifiers must be adjusted according to Chapter 7 step re sponse sensitivity etc The description refers to both chan nels Channel B information within parentheses Recall the timer counter default setting Select the measure ment function Time A B Set both input channels to DC Man Trig 0 000 V No signals connected The RF shield must be removed before measuring on the input amplifiers It is soldered to two of the shield clips Don t forget to put the shield back afterwards and secure it by resoldering First measure some DC values U3 pin 9 pin 13 should be near 0 000 V The same applies to the trigger level U3 pin 10 pin 12 The voltage to ground at the point where R171 R243 and R172 R244 are connected should be approxi mately 0 8 V Connect a KHz square wave with amplitude 1 Vy in 1 MQ to Input A Input B Measure at the following point
77. 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 82 OHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 10 ohm 1 0 1W 100PPM 0805 RESISTOR 10 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 Part Number 482205110109 482205151001 482205151001 482205151001 482205151001 403100112050 403100112050 532211712498 532211712498 532211712497 532211712497 532211682264 403100268020 532211712499 532211712498 482205110121 482205110121 482205110121 403100247010 403100222020 482205110121 482205110121 482205110121 403100247020 532211712499 532211712499 532211712499 532211712499 403100222020 403100222020 403100247020 403100247020 532211712497 532211712502 532211712497 403100222020 403100222020 403100222020 403100222020 403100222020 403100222020 532211712497 532211712497 532211712497 532211712497 532211712497 532211712497 403100282090 532211712497 532211712497 532211712497 403100215020 403100215020 532211712502 532211712502 532211712499 5
78. 10V 0810 SMD CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220HF 20 35V 1012 SMD Part Number 532212613638 532212613638 532212234123 222286118689 222286115109 222286115101 532212411418 222286115101 222286115101 532212234098 532212410686 532212613638 532212613638 532212613638 202202900654 222286118689 532212613638 532212411418 532212613638 202202900654 532212613638 532212411418 532212613638 532212613638 532212411418 532212613638 532212613638 532212411418 532212613638 532212613638 532212234098 532212613638 222215364221 532212613638 532212234123 532212613638 532212234123 222215360229 532212411418 532212234123 532212234123 532212613638 532212613638 532212613638 532212613638 222215360229 222215360229 222215360229 222215360229 532212613638 202202900655 532212234123 532212234123 202202900655 202202900655 532212613638 532212234098 202202900655 202202900655 222215364221 532212234123 222286115101 532212613638 222215360221 Replacement Parts Main Board Version B Pos C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C423 C424 C425 C427 C428 C429 C429 C430 C431 C432 C433 C434 C435 C436 C437 C438 C439 C440 C441 C442 C443 C444 C445 C446 C447 C448 C449 C450 C451 C452 C453 C454 C462 C463 C464 C465 C466 C467 C468 C469 C470 C471 C472 C473 C474 C475
79. 222291016749 222291016749 222291016749 222291016749 222291016749 202202900654 222291016749 202202900654 222291016749 403102172280 222291016749 403102172280 403102172280 202202900654 202202900654 222215360478 222215360478 222286115339 222291016749 222291016749 222291016749 222291016749 932220426682 932221032682 932221031682 932221031682 932221031682 403110065800 242202518448 242202518448 242202505569 942253600592 242254943133 403100247090 403100110090 403100110090 403100110090 403100110090 403100233030 403100110090 403100247020 403100110090 403100247020 403100210050 403100247090 403100247020 403100247020 403100247020 403100247040 403100110090 403100247020 403100282040 403100210040 933965740685 933965740685 935269569701 932220427682 Replacement Parts Front Unit 8 15 Pos B1 B2 B4 BS B6 B7 C1 C10 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109 C11 C110 C111 C114 C115 C116 C117 C118 C119 C12 C120 C122 C123 C124 C125 C126 C127 C128 C129 C13 C130 C131 C132 C133 C134 C135 C136 C137 C138 C139 C14 C140 C141 C143 C146 C147 C148 C149 C15 C150 C151 C152 8 16 Main Board Version B Description OSCILLATOR 10MHZ OCXO P N 738Y4084 CRYSTAL 10MHz HC 49U 13 CRYSTAL 6MHz HC49 USM SMD CRYSTAL 40MHz HC49 USM SMD CRYSTAL 10MHz HC49 USM SMD CRYSTAL 11 2896 MHz HC49 USM SMD CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR
80. 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD CAPACITOR 6 80 HF 20 16V 6 0X3 2 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 CAPACITOR 3 9pF x0 25pF 500V NPO 1206 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAT18 35V 1PF SOT23 DIODE 0 10A BAT18 35V 1PF SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAT18 35V 1PF SOT23 DIODE 0 10A BAT18 35V 1PF SOT23 DIODE VARACTOR SMV1255 073 5 07 DIODE VARACTOR SMV1255 073 5 07 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 5A SOD87 DIODE BYD17G 400V 1 5A SOD87 DIODE 0 10A BAV99 SOT23 DIODE SCH 0 2A BAT54S SOT23 SMD CONNECTOR 20POL HEADER SMD 15
81. 330 330 3 0 330 SI 10n T K 100NF 4 8 vin 2 28593 R375 R376 R379 R524 AE GADS 82 ame I KM4100 VREF reed 4 ADT 1 5K L C324 t RD DB7 A COUNTER CIRCUIT Not Used R378 R383 C509 Em 59 DB8 325516 5 cs DB9 44 1 RDYO ERRPO 029 b U42A T m RO 46 ROYI RESO 56 C325 47 Not Used 47 RDY SHO 5 R629 BFTo2 47 ADG1061 RA Rog 58 fon 226 R380 400NF L 23 59 I t 8 3 ADCDATAO ERRP1 52 li 24 ADCDATA1 Rest 83 R630 al R515 ADCDATA2 61 22K C327 R382 10 I 2 ADCDATA3 csi ADS 33 ADCDATA4 RDT 52 j po gt R517 M ADCDATAS ADGT19 ABE 330 ADCDATAG ERRP2 E 100p 100 ADCDATA7 8682 E R519 0 ADCDATAB SH2 7 330 d ADCDATA9 52 ee 42 ADCDATA10 RD2 38 3 R520 ADCDATA11 Leo ADB 330 ERRES 86 40 te DO x 12VINT m s aj 1 21 1025 bes 330 MI CS3 86513 2 09 54 1 6528 C525 R387 9522 DBO 4g ADZ mes 6 8u 16V I 2253 330 2 e feed ome 4 DB2 ADIO Ea TCK INTREFOUT He 47K 82 R528 083 16465 TDI PULSEOUT e 66 330 ET KM4100 085 14 TRIGALED 003 1 5K DB6 HADE 122 _____ Not_Used R385 R389 C510 087 2259 TRIGBLED Dey GATELED 282 BFT92 ADIO DB9 257 r z M 031 a a mxo CM
82. 5 CTRLO 48 PRESC ON_5 cru 4 PRESC TEST 5 U4D 22pF 150 2 109 OPTION 5 2 100 100 100 40 amp p CTRL4 x67 p 1 10MHZ RUBIDIUM 2H B 217600 M E 45 R303 NOT USED 48 5 2 upro gt AK uo Ls 4 u2 s DR D te 3 UPRD 3 3VD REMI NOT USED SpartanllE 2 Y D25 L5 gt 3 3V0 BAV99 BLM21A102S 026 16 R305 R306 me Con 100 100 D 7 t SIR 100NF avon pore REBS R307 R308 5V0 100K AN 1 100 100 R624 D27 17 C203 x 2 2K R309 9120 D L Q18 019 8M 25 14 BAV99 BLM21A1028 10N 3 A 1 4 204 R310 17 BFS17 AN bis 3 AN CS E amp 100NF ge 1 R314 020 021 1 517 86517 R623 29910 ali R352 R342 B 1 47 470 4 7K 820 47 1 R315 T T U12B U12E R319 R316 R317 R318 2 9 23 17 022 023 R320 100 100 47 47 2 3 amp 1 za amp bie p 86517 LI gt R321 R322 10K 39K R323 R324 R325 R326 R327 47 100 100 47 100 102104 bn A 7 4 R330 026 R331 R332 mE dh R333 Not Used BC847B T 1 10K 39K 47 3329 EN 29 R346 T R336 027 24v R338 R337 R339 R343 R344 R335 880 C206 R340 Not Used BC847B 1 U12A 100 100 150 68 68 47 1 10N I m T BN zB C207 208 E wg 5 amp ba 21 18 5 D28 100 JOON BLM21A1028 AN BAv99 1 5 R347 10E104 1 T 4 211 L
83. 532212613638 532212613638 532212613638 532212613638 532212613638 222286115109 532212550306 402230160091 532212613638 402230160191 402230160191 222286115339 222286115339 532212613638 532212613638 532212232531 532212613638 532212613638 532212613638 532212613638 222215360229 532212613638 532212613638 532212613638 532212613638 532212613638 222286148103 532212613638 532212613638 532212613638 532212613638 222286148103 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 402230160211 222215360229 532212613638 222215360229 532212613638 Replacement Parts Main Board Version A 8 7 Pos C492 C493 C494 C496 C497 C498 C5 C503 C504 C507 C522 C523 C524 C525 C526 C527 C528 C529 C530 C531 C532 C533 C534 C6 C7 C8 C9 C99 D10 D11 D12 D13 D14 D15 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36 D37 D46 D48 D50 D51 D52 D53 J12 J13 J15 Description CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR 22pF 5 50V 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 6 80 HF 20 16V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20
84. C396 C397 C398 C399 C400 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 Description CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 10pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 1 HF 20 16V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2201 20 10V 0810 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100n
85. Figure 6 76 Startup indicator test points ON CONTRAST RESN Chi 00V 2 00 M 200005 Chi 1 76 Figure 6 77 LCD control signals ocillogram 1 chit 2 00V E 2x 00V at 00ms ai chi 1 76V Figure 6 78 LCD control signals oscillogram 2 Troubleshooting 6 47 hil 2 00V 200V a ry c A r A O Oo Chi 2 00 V 2 00V 40 ous Ch2 7 1 76 V FRM LP Figure 6 79 LCD control signals oscillogram 3 BS wa Chil 2 00 2 00v M 400gs Chl 1 76 RAN LP Figure 6 80 LCD control signals oscillogram 4 Chil 2 007 2 00V d A cht 1 75 CLK LP Figure 6 81 LCD control signals oscillogram 5 6 48 Troubleshooting Chil 00V a 2 00 V 1 om chi 176v LP RAN FRM D1 RESN Figure 6 83 LCD control signals oscillogram 6 chil 2909 Giri 2 00 Figure 6 82 Keyboard interrupt The fan is kept at 8 4 V for the first 8 3 minutes After that the fan is temperature controlled The processor reads the temperature via the bus every 10th second 1039 mea sures the temperature The keys on the display board are read over the bus If a key is pressed bus circuit U3 notices that and sends an interrupt to the processor Check at J13
86. M e W Ma A 4 CS CS m M Chi roov GE 40065 A Chi X 1 74V chi 100 152 Maoons A Chi 1 174 Figure 6 38 Microprocessor bus USB timing Power Figure 6 39 bus GPIB timing Power On g g 5 CONTINUOUS 30 MHz START INTERPOL NTT EN FIFOALERT FIFOWR GiM 1 00V 100 40 0 5 A Chi iov FIFOWR 1 00V amp Ch2 100 M20 0us Chl 2 10V Figure 6 40 FIFO timing 1 Figure 6 41 FIFO timing 2 Troubleshooting 6 25 DATA CLOCK Gi 100 1 00V M40 0us A Chl 2 107 DATA CLOCK Figure 6 42 SPI bus activity oven Figure 6 43 SPI bus activity PLL 1 1 00V amp Ch2 1 00V M10 0us A Chi 7 2 10V 1 00V 1 00 10 0 6 Chi CLOCK LD Figure 6 44 6 26 Troubleshooting SPI bus activity PLL first transfer close up Figure 6 45 SPI bus activity trglvl eei pent a hok naa ial iha ai SDA NORM TEMP SDA LOW M _ _ JANI BIN i SCL ERE ev 6 46 bus activi
87. R178 R179 117 12K a 120 120 120 120 150 3 9pF 100V LMCEOB1A UD cite se 100NF 150 R182 QE 470K R183 R184 R185 p 10K 220 1K te LE zs a L1 R187 4 4 4 5 2VAI 287 395 5 2 NH 27 R613 PCB Pattern SEMI C123 m C125 A Risk 2 2UF 6 3V R188 R189 C20 52VAI 470K 470K L 1K 1 TRGLVLA TRG_LVL_A 5 FILTERA 1M R190 5 COMA Ries mes C129 C130 M PEON R192 f FILTER A LE 5 1 K BFR92A x34 x36 100NF 0 5 MPA gt e R198 4 4 4 R195 15K ctz8 C231 6232 030 C227 pot 033 229 032 C230 p 100 10N ton 002 10 99 10 99 UD2 10N UD2 I 10N 7 7 R199 al CI E 4TK L R207 L C126 C127 100NF 100NF bet C497 R203 100 15K TLE2022C R200 R201 12VI 5VBI 5VBI R224 2 5 10PFI250V v v V 1K 5 2VBI 1 5VBI C131 Ria 470 470 C134 Ra 100 D17 D18 D19 020 u U50B hil 7 1 9pF 500V i j saves 22UF 63V 7 4 R206 C137 BAV99 BAV99 BAV99 R205 R208 dee I 70 TLE2022C 180K 9 REARPANELINPUTB lt C 1 R209 40 2 5 10PF 250V BAT18 Y BAT18 gt X R21 Ni 212 R213 R214 a 5 MO wa R215 R216 KTA R217
88. R188 R189 R190 R191 Description RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 000 ohm 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 120 Kohm 1 125W 100PPM 1206 RESISTOR 680 kohm 1 125W 100PPM 1206 RESISTOR 220 kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 680 kohm 1 125W 100PPM 1206 RESISTOR 10 MOHM 10 0 25W RC 01 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 3 30 ohm 1 125W 100PPM 1206 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 1 00Mohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 3 30 ohm 1 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 12
89. R209 R210 R211 R212 R213 R214 R215 R216 R217 R218 R219 R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R230 R231 R232 R233 R234 R235 R236 R237 R238 R239 R240 R241 R242 R243 R244 R245 R246 R247 R248 R249 R250 R251 R252 R253 R254 R255 Description RESISTOR 000 Ohm 0 1 100 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 27 Ohm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 POTENTIOMETER 100 kOhm 3304X 1 104 POTENTIOMETER 2 kOhm 25 4mm RESISTOR 15 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 kOhm 1 0 1W 100PPM 0805 RESISTOR 180 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 000 Ohm 0 1VV 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 47 Ohm 1 125W 100PPM 1206 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 120 kOhm 1 125W 100PPM 1206 RESISTOR 680 kOhm 1 125W 100PPM 1206 RESISTOR 220 kOhm 1 125W 100PPM 1206 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 680 kOhm 1 125W 100PPM 1206 RESISTOR 10 MOhm 10 0 25W RC 01 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm
90. Schematic Diagrams 9 27 Main Board PCB 1 Component Layout Top Side E9ra poza 6979 0274 Gzra 9274 R58 E Lol 5 Ras C38 4746 479 i 51 0130 Ln 0440 R27 5 a Rage C409 cei E eo C354 C408 2517 x17 218105819 gt g BI 5 049 4
91. U13 IC C TA7S20 60QC 932220406682 U14 IC CMOS SN74LVC125AD 932220193682 Pos Pos Part Number A C36 C354 C499 C251 202202900654 Pa rts U n iq ue to Ve rsion B C384 C390 C423 C425 C500 C250 202202900655 C539 C561 C562 C563 C564 C575 C253 C252 C256 C259 C431 222215364221 C254 222286115221 C565 222286115229 Pos Description Part Number C33 C27 C248 C249 222286115279 C302 C343 C373 C379 C391 222286148102 B7 CRYSTAL 11 2896 MHz HC49 USM SMD 403110056560 C392 C413 C418 C419 C420 C281 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C502 C537 C538 C543 C544 C282 CAPACITOR 100nF 10 16V X7R 0603 403102030104 549 560 566 573 576 283 CAPACITOR 100nF 10 16V X7R 0603 403102030104 577 578 579 580 582 284 100nF 10 16V X7R 0603 403102030104 C34 C35 C37 C38 C248 C535 222286148103 C285 CAPACITOR 470pF 10 50V X7R 0402 403102040471 PRACA C286 CAPACITOR 470pF 10 50V X7R 0402 403102040471 oe I 287 CAPACITOR 470pF 10 50V X7R 0402 403102040471 Mor A 222291916743 C288 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C567 C287 C288 C301 302 C304 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C304 C305 C306 C307 C305 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C308 C309 C320 C306 CAPACITOR 100nF 10 16V X7R 0603 403102030104 L15 242253600772 C309 CAPACITOR 10nF 10 25V X7R 0402 403102040103 L66 L67 L18 242254900035 C501 CAPACITOR 470pF 10 50V X7R 0402 403102040471 L18 242254943133 C506 CAPAC
92. approximately 5 V C174 The polarity of the reference voltage is reversed in an op amp U6 and the voltage at 05 1 should be 5 V The out put voltage from the DAC should be between 0 and mea sured at R281 The DAC is controlled by the processor via the SPI bus The frequency adjustment range should be wide enough to al low for more than 10 years of oscillator aging The oscillator must be replaced if the normal control voltage range cannot make the oscillator output 10 000000 MHz As a last resort to exclude external causes of malfunction desolder the oven oscillator from the main circuit board Place it upside down and connect 12 V and ground accord ing to Figure 6 68 A cold oven oscillator draws approxi mately 0 30 0 35 A During heating the current consumption varies After 10 minutes it should stabilize on less than 0 1 A The output should be approximately 5 V and the 10 MHz sinewave output signal should have an amplitude of more than 2 5 Vy measured with a 1 MQ 10x probe The control input has an internal bias to keep the output frequency in the middle of the range Adjust the control voltage between 0 V and 5 V and check the output frequency range with a fre quency counter The minimum trimming range should be 5 Hz 10 000000 MHz must be reached somewhere between 0 V and 5 V If the oven oscillator circuitry is repaired a new calibration must be performed See Chapter 7 A new factory calibration
93. buie 015 ake a 494 O NEN 8 rol 491 gt BI 7427 R56 C492 Bg 171 649 R so C 4 3 P G 3 g L4 xed 8 XI7 J E T3 gt E Resa I gt 305 z za cee E GND 9587 lt po RIB E R354 284 0585 5 gt GE at C393 Q Re 2 2 gg e gt i E gt gt 28 2304 5 U1e9 56 UN O g a a lg Le Ute4 ES e BH i R56 ol ka LV 5 L 3 B m 53 461 9 c 5 E 2 e EE E BS ame xe _ IC 5 s a 3 O E M30 SE C26 e X16 ki gt amp m RE X31 gt Read Raed ET Rud R 29 8 SR Rael 644 Rad R R 5 alle GE ET be 72 Jie 88 2 EE E EE ERIE Z mi EA Bl sle eo 2 555506 Be 69 Gey saag MIO 22 2 1 c4 020 19 E SIS 3 A N 234 224 249 amp 8 253 UH 2 z ea zla R 7 RO R aa 202278 52 Te 5 E SEE pua 1510261 273 s EL 34 831 A 8 s 048 5 5 J 5 _ gt 2591 8 Raga D et gt 193 g SUE 53 Lo 5 Ese E 5 ue 18 403 R32 EJ 025 C EJ SE RE X28 R49 S17 O R349 312 534 Bla B
94. lt 4 x 10 lt 2 x 10 lt 0 7 x 10 3 months after calibration lt 4 x 19 lt 4 10 lt 1 2 10 1 year after calibration lt 7 10 lt 6 10 lt 1 7x 10 2 years after calibration lt 1 2 x 10 1 2 x 107 3 5 x 10 For complete specifications see Chapter 8 of the Operators Manual Table 7 1 Suitable calibration intervals depend on the total uncertainty of different timebase options and the requirements of your applica tion 7 2 General Principles Start the calibration amp adjustment procedure and fol low the instructions Measure the deviation and record the value Check that the parameter meets its specification The Calibration Submenu Frequency fi DEREN User options Calibrate Uoltage Restore Password Protection Internals on When used for the first time this submenu can be activated from the USER OPT menu after first entering the fixed pass word 62951413 All calibrations that can be performed manu ally are controlled from here Internal delays can be compen sated for as well as aging of the timebase and voltage refer ences All calibration procedures are performed without hav ing to remove the instrument cover In this way it is easier to keep the calibration environment as close to the operating en vironment as possible No special tools are necessary and live parts are not exposed to the operator who is guided through the procedures by instructions on the ins
95. o o L VALUE OK EXIT LEFT ENTER RIGHT MV 59 STAT PLOT DOWN 512 513 54 515 516 517 518 1 0 0 0 0 o o 0 0 o o 0 0 0 0 F1 F2 F3 F4 F5 F6 F7 4 4 4 519 am 520 521 522 523 524 525 526 o o o o o o o o o o o StandBy INPUTA INPUTB SETTINGS MATHILIM USER OPT HOLD RUN RESTART 4 4 3 3V PROBEGND1 PROBE GND2 1 2 H4 3 2 PLATED SQUARE PAD 3 5 PLATED 3 5 PLATED 3 5 PLATED 90 gt 9555 Schematic Diagrams 9 23 This page is intentionally left blank 9 24 Schematic Diagrams Version B The descriptions in this section apply to instru ments having a Sharp microprocessor See General Information on page III for details on relevant serial numbers etc Schematic Diagrams 9 25 This page is intentionally left blank 9 26 Schematic Diagrams Main Board PCB 1 Component Layout Bottom Side O O O c S Ble E d 3 ASF 5
96. set low One clock pulse after DONE is set high all I Os on the FPGA are defined If the loading of the FPGA is not success ful the program just goes on with the rest of the startup procedure The fan is set to 8 4 V See Figure 6 23 Measure on J19 or J28 The input amplifiers are initialized and a click from the relays is heard The bus is used for controlling the relays Note The bus is of the utmost importance for the start of the instrument The FPGA the LCD and the relays in the input amplifiers all need a faultless bus to work properly Note If the Flash PROM is exchanged it must be replaced by a preprogrammed Flash PROM Voltage and timebase calibration must be performed anew The utility program must be used for transferring the cali bration results to new factory calibrations The serial number and the oscillator option must also be pro grammed by the utility program The fan is kept at 8 4 V for the first 8 3 minutes After that the fan is temperature controlled The processor reads the temperature via the bus every 10th second IC U39 mea sures the temperature The keys on the display board are read over the bus If a key is pressed the bus circuit U3 notices that and sends an 6 16 Troubleshooting interrupt to the processor Check at J13 9 low is interrupt The processor then scans the keys via the bus to find the depressed key See Figure 6 30 During the scanning there may
97. timebase reference is vital to reliable results Scheduled calibration of the built in timebase reference is highly recommended in applications where external more ac curate frequency references are not available Suitable cali bration intervals depend on the chosen timebase option and the acceptable inaccuracy but once a year is often a good starting point The 90 has also limited voltage measurement capabilities and when these features are utilized the voltage reference should also be calibrated preferably at the same time as the frequency reference Both frequency and voltage calibration can be performed without removing the cover and the procedures are described in Chapter 7 where you can also find information about cal culating calibration intervals for different timebase refer ences Instructions for Firmware Upgrade The firmware is stored in a FLASH PROM so it is possible to upgrade via one of the standard instrument interfaces GPIB or USB without opening the case USB is standard on most PCs but GPIB communication requires a special controller board and dedicated SW from NI or CEC A readme txt file contains information not covered by these instructions The relevant files are available through the service organization Make sure the National Instruments NI VISA 3 2 or later is installed with USB support even though you are going to use the GPIB interface for the upgrade Establish a communication
98. 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 15 KOHM 1 0 1W 100PPM 0805 RESISTOR 330 KOHM 1 0 1W 100PPM 0805 RESISTOR 150 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 33 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 1W 100PPM 0805 RESISTOR 1 1 0 1W 100 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 330 OHM 1 0 1W 100 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 15 KOHM 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 330 OHM 1 0 1W 100 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805
99. 0805 403100282090 R309 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R377 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R310 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 403100268090 R378 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 311 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 403100268090 R379 RESISTOR 1 5 kOhm 1 0 1W 100PPM 0805 403100215020 R312 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 532211712507 R380 RESISTOR 10 Ohm 1 0 1W 100PPM 0805 403100210090 8313 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R381 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R314 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R382 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R315 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 8383 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R316 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 8384 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R317 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R385 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R318 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R386 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R319 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 8387 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R320 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R389 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 321 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R390 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R322 RESISTOR 39 kOhm 1 0 1W 1
100. 1 0 125W 1206 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 1 1 0 1W 100 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 820 ohm 1 125W 100PPM 1206 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 470 OHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 10 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1
101. 1 0 1W 100PPM 0805 SENSOR TEMP KTY82 120 RESISTOR 3 30 Ohm 1 125W 100PPM 1206 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 00 MOhm 1 0 125W 100PPM 1206 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 RESISTOR 3 30 Ohm 1 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 82 Ohm 1 0 1W 100PPM 0805 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 12 0 kOhm 1 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 Part Number 403100200000 532211712508 403100227090 532211712499 212236200842 403101000001 403100215030 403100247030 532211712499 482205154701 482205154701 532211712497 403100215020 403100218040 482205110109 532211712497 5322
102. 100 MHz 011 100 MHz PLL ug U47 U48 U31 U32 U33 Q55 uP SPI Figure 6 14 reference system 12 4 10 MHz OUT Vref 02 Vcontrol 1 5 GND Figure 6 15 Oven oscillator pinning seen from bottom side Troubleshooting 6 13 Leva Eosq 2 0054 670 167 2 gt B 567 A vey 002
103. 10K 10K APR LOAD OVEN moe 15pF L 0186 T 68 R286 e C187 OPA277 JE H 1 470 D24 S SMV1255 073 us mer U48A R288 4 4 mas 100MHz 100K r R289 amp m 4 ZF a 100K 1 R588 R290 R291 R292 OPCLK 5 2 STD OSC TRIM te L 24V R293 U11B NOT USED 4 7K 47K ctao_l m 10N T d C192 C193 C194 C195 air ODuF 6 3V COUNTER CIRCUIT 100 100 100 ECAUT25 PLL LOCK R7 RB LOCK PLLLOCK 10MPLL 100MHz 8 RBLOCK 203 OVEN OSC ON OFF tase Cs ace c os RUBIDIUM ON OFF U49A 2 NOT USED T RO p ze 4 10MSTD 25 909509001 n c 3 3U49 4 J2A 10MRB 206 EXTREFON 8 NOT USED MINICOAX 3 m c EXTREFCTRL L gt 100 100 Not Used NOT USED C487 R569 ot RUBIDIUM ON OFF A 5552 pe II 400M R295 R609 creio 48 PRESCON 5 12VA 48 PRESC TEST 5 22 150 CTRL2 100 100 100 i 171 iii RESGPIBN 8 RB LOCK 18 1 RBLOCK L __i2 amp CTRL4 TOAD PLL RESETHER b CTRL5 1 10MHZ RUBIDIUM 13 20 CTRL TOAD OVEN ALVCOO R591 21 BN CTRL7 488 LOAD TRGLVLA 1 R301 CTRL8 20 LOAD R303 4 H USED _ a cms 22PF 150 L 2 01 02 p He u3 In 8 EXT REF A5 3 3VD gt 12578 R304 3 3VD 3 3V_U4
104. 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 3 9pF x0 25pF 500V NPO 1206 CAPACITOR 39pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITO
105. 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 12 0kohm 1 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 125W 100PPM 1206 Part Number 403100200000 403100233010 403100227090 532211712499 532210110841 403101000001 403100215030 403100247030 532211712499 532211712499 482205154701 482205154701 532211712497 403100215020 403100218040 482205110109 532211712497 532211712497 403100200000 532211712499 532211712497 532211712498 532211680448 532211680447 482205151204 532211711787 482205152204 532211712497 532211712505 403100233010 532211712499 532211711787 482205110106 532211712505 532211712505 532213010682 532211711788 532211712501 532211712505 403100247030 532211680447 532211712499 532211712505 482205110105 532211712501 532211711788 482205110121 482205110121 482205110121 482205110121 482205151501 532211712505 403100282090 403100268090 403100268090 403100247020 532211712505 532211712505 532211710968 482205110121 482205110121 482205110121 482205110121 482205151501 Replacement Parts Main Board Version B Pos R252 R253 R254 R255 R256 R257 R258 R259 R260 R261 R263 R264 R265 R266 R267 R268 R269 R270 R271 R272 R273 R274 R275 R277 R278 R279 R279 R280 R281 R282 R283 R284 R285 R2
106. 1W 100PPM 0805 403100247030 R349 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R277 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R350 RESISTOR 680 Ohm 1 0 1W 100PPM 0805 532211712509 R278 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 403100222020 R351 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R279 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R352 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R280 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 403100210050 R353 RESISTOR 3 3 kOhm 1 0 1W 100 0805 403100233020 8281 RESISTOR 1kOhm 1 0 1W 100PPM 0805 532211712498 8354 RESISTOR 3 3 kOhm 1 0 1W 100 0805 403100233020 R282 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R355 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R283 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 403100247030 R356 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R284 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 8357 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R285 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R358 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 403100210050 R286 RESISTOR 470 Ohm 1 125W 100PPM 1206 482205154701 R359 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R287 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R360 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R288 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 532211712501 R361 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R289 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 532211712501
107. 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 000 Ohm 0 1VV 100 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 6 8 kOhm 1 0 1W 100PPM 0805 RESISTOR 1 5 kOhm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 680 Ohm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 1 kOhm 1 0 1W 100 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 2 2 kOhm 1 0 1W 100P
108. 20 R16 e i 1 2 10 RIK l c24 2 C12 vo e 912 mm 22UF 6 3V c m 100nF v3 LM358 TPS R18 gt M v4 R19 10 l c25 U2B L 15 47K 005 22UF 6 3V 2x10 SMD 20 19 18 17 1 16 15 14 13 12 11 10 x 3 1 4 lt a U3A EEK 9555 1 H 88555555 88888888 1 4 444444 4954444 STDBY GATE TRIGB TRIGA 02 D3 04 05 EL4141D gauco Eseo V EL414GD si s2 s3 o o t o MEAS FUNC AUTO SET uP Leoa 1 c16 mm 22uF 6 3V s4 s5 56 57 58 o o o o o o L VALUE OK EXIT LEFT ENTER RIGHT L s9 o STAT PLOT DOWN 512 513 54 515 516 517 518 1 0 0 0 0 o o o o 0 0 F1 F2 F3 F4 F5 F6 F7 4 4 4 519 as 4 520 521 522 523 524 525 526 o o o o o o o o StandBy INPUTA INPUTB SETTINGS MATHILIM USER OPT HOLD RUN RESTART 4 4 A 3 3V PROBEGND1 PROBE GND2 1 2 H4 3 2 PLATED SQUARE PAD 3 5 PLATED 3 5 PLATED 3 5 PLATED Pendulum Instruments AB a Web Site www pendulum se U3B gt 9555 Display and Key board Board q Project 90 91 d Size Document Number ev A2 4031 100 65860 01
109. 2A0 280 D 2A1 281 2 2 282 35 12 41 8 FROM PROCESSCR 3 3VCPU 321 223 283 17 x 3 3VCPU 3 4 IH lt gt 284 Me BLM41P800S 24 gt CZE 286 499 C281 C282 C288 C501 C506 C508 C513 C514 T 220UF 10V 26 247 287 23 124 100 100n 100n 470p 470p 10n 10n 10n EE a 1 L 413 amp 100n 100n 100 470p 470p 470p 3 3VCPU DIR2 LVCOS R638 LVC162245A 1 A 3 3VCPU C516 C535 10 10n 100 43 3VMEMF C309 C568 C569 C570 C571 C572 10n 10n 10n 10n 10n 10n PN PN En ONES NN 1 d 534 8888 8888 8888 dq 7 lt z 2 88888 BEEBBBESBERERRS C317 C578 7225 usio C573 0301 FALA upa C303 _L cse1 8 agaaa SSSSSSSSSSESSSS 100 in 595555006 LVC162245A 1n jon goaanana LVC162245A 100n 10 999900900 LVC162245A C9 U17B C318 C319 C37 csis 8 8 8 55555 00 63 T 55555655 55555555 55555555 C517 025 U56E 85 96 AM29LV640MH 100NF T 100NF 10n I 56656666 66666060 55555505 casa ti CB 82 958 gt gt 4 LH79524 me T 6 2 888 seegeeseeseses g g gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt a 5 3 3 z i Schematic Diagrams 9 31 This page is intentionally left blank 9 32 Schematic Diagrams Input Amplifiers PCB 1 sheet 2 7
110. 33V 1 Y D25 T SPARTANIIE gt 8 3VD BAV99 BLM21A1028 D 16 C201 ts 100NF 9 100 SIR s Bavog PLM2tATO2S R589 R590 j C202 R307 R308 3 3VD 5VD 100K 150 100NF 100 100 R624 V D27 17 R309 W Di Y T H Bs 3 A 1 L Best BIMZIAIO2S 10 l R311 10N _ 3 gt R313 100NE 7 68 68 R312 aj 0 47 R314 2 R E __ 2 BFS17 517 R623 3l R352 R342 47 R315 1 4 7K 820 gt U12B U12E R319 zk R316 R317 R318 2 9 17 022 023 925 100 100 47 2 bis 1 86517 86517 92 R321 R22 id 3 amp a 24 amp m m tet BSR12 BSR12 10K 39K R323 R324 R325 R326 T 400 100 10E104 1 106104 47 R330 026 R331 R332 1206 gt R333 Not Used BC847B 10K 39K R334 205 270 T z I A 100 47 2 2K 10N R346 R336 Q27 T R338 337 R339 R343 R344 R335 680 R340 Not Used BC847B U12A 100 100 150 68 68 a Fm 270 T Te 1 4 L m c207 C208 kd 5 amp be RAM R328 T 10 100NF LB D28 4 EGA BLM21A1028 1 4 BAV99 R347 22 48 R349 212 5 2VA 120 BLM21A1028 VA AE D29 100 100 24v 10N 5 2VA Bavo BLM21A1028 B 47 52VA A A 3 BN 4 21V 24V 5 5 BURST EXTCTRL 12 578 50 5VD 12578 3 3VD 3 3VD 780 33 3 3VA un 7 12VU 1 gt 12V0 v BLNA1PEOOS m 3 3VA 3
111. 482205154704 403100215030 403100233040 403100215040 403100222020 532211712499 403100222020 403100210050 403100233030 532211712499 532211712498 482205110109 482205110109 532211712498 482205110109 482205110109 403100222020 482205110109 532211712498 403100247020 532211712508 532211712508 482205154701 482205154701 532211712508 482205154701 532211712508 403100215020 532211712508 403100215030 532211712508 532211712498 532211712508 532211712508 532211712508 532211712508 532211712498 532211712507 403100247020 532211712497 532211712505 532211712507 403100233020 403100247020 482205151001 403100222020 Pos Description Part Number Pos Description Part Number 8533 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R602 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R534 RESISTOR 22 Ohm 1 0 1W 100 0805 532211712507 8603 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R535 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 532211712507 8604 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R536 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R605 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R537 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 R606 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R538 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 R607 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R539 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 532211712507 R608 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482
112. 5 5 5VAl gt T BE T R VAI SVBI 5VAI 5VBI A000 ecc or d REN BLM21A1028 C162 cies 99900 u usc gt 8 2UF 8 i ue L cies U2B _ cies l ct 2 2UF 8 3V 8555541 565 2 2UF 6 3V gt LMC6081A T 100NF gt T 100NF gt TLE2022C T 10N J 4 i C246 C247 4 GGG gt O 5 NAI 10N BLM21A102S 52VAI 5 2VBI 52VAI 5 5 2VAI gt 5NA L 5 5 2VBI 5 2VBI Schematic Diagrams 9 11 This page is intentionally left blank 9 12 Schematic Diagrams Interpolators PCB 1 sheet 3 7
113. 50 Q mode 11 resistors are used for dissipating the input power up to a maximum of 2 9 W 12 Vins m Attenuator This stage has two parts a fixed preattenuator approximate attenuation 2 5x and a cascaded relay operated 1x 10x step attenuator The variable capacitors are used for adjusting the frequency response of the attenuators m AC DC This stage selects AC or DC coupling with a relay m Limiter The voltage limiter protects the impedance converter against overvoltage The 5 V applied to the input BNC is divided to approximately 2 1 V by the attenuator The limiter clamps the voltage to approximately 2 8 V m Impedance Converter Split band technique is used for achieving good frequency re sponse over a wide range The HF signal is fed via an AC coupled FET stage The LF signal bandwidth DC to ap proximately 10 kHz goes via an operational amplifier The signals are added together at the source of the FET The output signal from the buffer stage see below is fed back to the op erational amplifier A trimmer potentiometer is used for equalizing the gain in the two signal paths approximately 0 9 m Filter A lowpass RC filter with an approximate cutoff frequency of 100 kHz can be switched in via a transistor m Buffer Before the signal is fed to the Crossover Switch it passes a current amplifying buffer stage that can drive the following low impedance stages m Crossover Switch This stage uses relays to
114. 500000 1 DUTY NEG A 0 500000 1 VOLT MAX A 0 75 V 2 VOLT MIN A 0 75 v 2 Table 2 8 Measuring functions check 1 Value depends on the symmetry of the signal 2 Exact value depends on input signal 3 If an RF option is installed Trig level 0 5V DC coupling The standard deviation Std should be lt 100 ps 2 6 Performance Check Rear Inputs Outputs Rear Inputs Outputs 10 MHz OUT Connect an oscilloscope to the 10 MHz output on the rear of the counter Use a coaxial cable and 50 Q termi nation The output voltage should be sinusoidal and above 1 Vrms 2 8 Vp p EXT REF FREQ INPUT Recall the DEFAULT settings Connect a stable 10 MHz signal e g REF OUT from an other counter to input A Connect 10 MHz 100 mVams 0 28 Vp p signal from the LF synthesizer to EXT REF IN Select Ext Ref by keying in the following sequence SETTINGS Timebase Ref Ext The display should show 10 MHz Change the external reference frequency to 5 and 1 MHz The counting should continue and the display should still show 10 MHz EXT ARM INPUT Proceed from the test above Select MANual trigger Settings for the pulse generator single shot pulse manual trigger amplitude TTL 0 2 Vpp and duration 10 ns Connect the pulse generator to Ext Arm Input Activate start arming by keying in the following se quence SETTINGS Start Chan gt E
115. 7
116. C20 C201 C202 C203 C204 C205 C206 C207 C208 C209 C21 C210 C211 Description CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 2 20 UF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 15pF 5 50V NPO 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1001 6 3V CAPACIT
117. DC MODULE uPROC X10 3 3 VA Q46 Q47 LOAD U126 LINEAR 5 VD U127 SWITCH 5 VA X13 12 X16 0129 LINEAR J28 FAN 0 C48 U30 A 5 2 VI 051 035 xg2 2 1 V Q17 U6 LINEAR LINEAR Figure 6 54 Power distribution Troubleshooting 6 33 On connection of line power R478 and C389 keep the RESETN input of the flip flop 029 low This sets the out put of 029 high Via 047 output signal low and 058 output signal high the secondary power supply will be set in ON mode To switch to the standby mode the processor sets the SETN input of U29 low This results in the QN output being low and the secondary power supply being set to standby mode via Q47 output signal high and Q58 output signal low In standby mode a bleeder circuit on 5 VU is connected It draws approximately 100 mA to stabilize the AC DC module The standby LED on the front panel is switched on To switch to ON mode from standby mode a negative pulse generated by pressing the ON OFF key on the front panel is connected to the RESETN input of U29 Linear regulators are used for some voltages to ensure mini mum noise Check the TPs below X12 3 3 VA from 5 VU X8 5 2 VA from 15 VU X10 12 VA from 15 VU X62 5 2 VI from 12 VA X25 2 1 V from 12 VA X16 12 VA from 15 VD X17 12 VU from 15 VU to oven oscillator not switched off in standby mode For digital and general use
118. F2 8 GET FIFODATA28 35 F27 F3 rh 88 FANS La gt LL Li 4 FL L15 WR FIFODATA25 F24 S r6 gt I BELA M FIFODATA24 18 523 Lr CsFPGA 33 100UF 6 3V WW 45 FON 1 gt 2 5V 0 FIFODATA23 115 22 0 Fg CSUSB CSETN 7 5VU to Uns 4 3UH AA FIFODATA22 HFT H F9 CSETHER CSETN A2 FIFODATA21 121 zg 5 F10 CSGPIB 28 CSGPIBN 8 7 POWERON le 9 in REG IX 1 3 FIFODATA20 122 Fqg 5011 DIRGPIB H DIRGPIB 8 Hi FB L4 C251 C252 A4 FIFODATA19 123 rg 8 F12 R369 122UF 6 3V 220UF 10V FIFODATA18 125218 F13 108 WRN 8 iar SH SHDN 220K F17 WRB 1 WRN RAZ COMP PGND a 1 DBO FIFODATA17 HEFTE 9 F14 RDB 1 5 6 7 8 3 3VD TYYYL 3VDISP 33K MH REF GND DB1 FIFODATA16 1 E15 BLM21A1028 253 C254 DB2 FIFODATA15 128 14 5 F16 apo gt 8 B T 680PF T 220PI MAX1927 DB3 FIFODATA14 H22 gi3 gt F17 348 P 5 RDN is Razi DB4 FIFODATA13 13312 6 F18 AB2 115 3 SSE C255 E DB5 FIFODATA12 HEAT F19 AB3 AAA en WEM 100NF FIFODATA11 135 Fqg 0 F20 BLMIPECOS 1 DB7 FIFODATA10 138 1 F21 015 C257 088 FIFODATAS 138 8 F22 DB15 24 014 C256 F8 3 Dia ZF DB9 FIFODATA8 87 F23 DB14 HS 013 L19 DB10 FIFODATA7 140 F24 DB13 20 012 DB11 FIFODATA6 14 rg F25 DB12 NOO 145 FS 42 D 121 e T
119. FEES Sr 184 C219 T Em Wood BID reat 6351 7 RGG 025 a zj EN Gl ges E RIZ R584 699515 198 1 NU R64 2 gt Fel m 8287 gt gt gt R 5 16406 R486 C196 6 353666 R589 SB v a GRE 0393 lg Rasele E 2 A 29 A e E gt C388 rules S X a 4 8 EN g CI wi 2 EN a a 047 gt ABBE U124 59 O ES al CI 5 bi gt a 2 m 376 15 EN X6 4 Eug O 8 E EJ E 2 X30 X28 6 xa zg e ICE O 28 61 2 ces 2 wej pas 2182 ilc a m o LC 434 8498115 2 2 2 gt c C BG 56 434 8 2 437 R4ed U40 JE C371 R443 Raad g ues UM 18 D 5 J S 042 039 3 039 040 04 049 23 XI3 I15 157 _ X6 x7 u ed em Speen FIEFEFEFE c LE FSE 96 Rael aja BBE HEREHERE BIB E mb RE 5565 SEBE a s med 5 EE 5 29 C208R339R317 7 MS M6 8 9 M10 BRAS 5 8 pan 1 El gt ISIS Em Figure 6 57 Important power supply locations 1 Troubleshooting 6 35 OFFCTRL
120. FRM 2 00V 82 200 200905 Ch2 X 1 68 Figure 6 26 LCD control signals oscillogram 3 FRM 800 200 _ 200 200us Ch2 f Figure 6 27 LCD control signals oscillogram 4 C4 Chi 2 00v 200 M20 0us A Chl 1 68V Figure 6 28 LCD control signals oscillogram 5 6 20 Troubleshooting Chi 2000 MM 200v M 1 005 Ch2 1 16V RESETN Figure 6 29 LCD control signals oscillogram 6 Gm 00 4 0 Chi X 1 38V Figure 6 30 Keyboard interrupt Microprocessor Bus amp Interfaces The instrument has a conventional 16 bit microprocessor bus with 16 bits bidirectional data signals 5 bits address signals Chip Selects and wrn and rdn signals It connects the proces sor to the FPGA the GPIB and the USB See Figure 6 34 The FPGA connection has 16 data bits 5 address bits chip select wrn and rdn The FPGA is controlled by the processor via the bus Measuring functions are selected for instance The FPGA is controlled between each measurement or block of measurements An interrupt signal from the FPGA is con nected to the processor See Figure 6 36 for a typical timing diagram The connection to the USB has 16 data bits 1 address bit chip select wrn and rdn An interrupt signal from the USB IC is connected to the processor See Figure 6 38 fo
121. Hin 4 2 LM2940CS 12 C262 C263 C264 1 1 1 680PF 220PF 100NF am ES 050 R618 R620 R621 R622 R625 R626 R627 he 868478 10K 120 120 120 120 120 120 L 2 2K T 1 T 01 10 1 LL 15VU 4 gt 15vU 1 T lt X8 10 Em 0130 I I 2 gt 2 6 15V REG V C408 4 C409 4 7UF 35V 8050 220UF 10V LM2940CS 12 R491 2 2K R492 R493 2 FANCTRL i 10K BCP51 dis 2 2K 402 C403 R494 I 1 100NF gt 47UF 35V 1M LM358 pags 2 FAN 15VU 4 4 CCNNECT CR E 176125 2 9 U2sB 33K dig L U30B U35B 095 C z 5C C26 p gt LM358 gt LM358 10n GLK aH IL LM358 LM358 LVC74A 12VA L Schematic Diagrams 9 41 This page is intentionally left blank 9 42 Schematic Diagrams Rear Panel Interfaces and I O PCB 1 sheet 7 7
122. I IN 7 25 PVIN sw L19 MY gt 30 12568 5VU 3 3K R581 2 jt 4 3UH 1 7 86054 SVIN swa 2 gt 33 0 12 568 pe C490 ONE 47 CHR REGSW4 470K C398 399 22UF 35V R582 7 SM 4 mmm 100uF 6 3V 220UF 10V AT SHDN SS RT PGOOD 2 C 2 12 PGND R490 R489 5K mH PGND2 150K 330K LTC3412 1 ace be ere M016 E 820 1 L L L casa C492 22UF 35V 160 M 15VU XI5 X46 R617 100NF 6 8K 2 80051 10n U35A x 4 rasvo 58 R619 I 1 051 R497 xie x 80051 1K R498 i m U129 LM358 our E gt 12 1 456 1 1 8500 10 406 4 0407 DHA 1 456 1K 501 47UF 35V GNDGND 220UF 10V R618 R620 1 R621 R622 R625 R626 R627 us LM2940C5 12 10K 120 120 120 120 120 120 E 050 10 4 4 4 8008 5 2 2K 10 15V gt C gt nsw 1 15V V U130 I I 1 M gt 112V 6 R491 2 2K REG 4 409 R492 T 4TUF 35V GNOGNB 220UF 10V 2 LM2940CS 12 2 FANCTRL 108 10K rue ae 86851 X49 LM358 onr aout C403 R494 228 4TUF 35V 1M R495 1 VI J 15V 2 COMER 9298 ds d 176125 2 o LV U35B 9 9 U30B i R496 F096 CIK gt 0806 gt 10K lt 220UF 35V a gt LM358 LM358 4 4 LVC74A dle aL RS E 12VA
123. Initializes the calibration process CALibration DELays STARt Calibration of Internal Delays Starts the calibration process CALibration DELays STORe Calibration of Internal Delays Ends the calibration process and stores the calibration factors CALibration ROSCillator FREQuency _ lt Numeric value gt Calibration of Reference Oscillator Selects the reference frequency used for the timebase calibration AUTO is automatically set to OFF Parameters Numeric value 1E 6 1 544E 6 2 048E 6 5 6 10E 6 Returned format Numeric value RST condition Not affecting this setting Voltage Reference 7 7 CALibration ROSCillator FREQuency AUTO _ lt Boolean gt Calibration of Reference Oscillator Switches the AUTO mode ON OFF for the reference frequency calibration If ON the timer counter measures the applied reference frequency before the start of the calibration process and adjusts the calculation algorithm ac cordingly Parameters lt Boolean gt 1 ON 0 OFF Returned format 1 0 2 RST condition Not affecting this setting CALibration ROSCillator INITialize Calibration of Reference Oscillator Initializes the calibration process CALibration ROSCillator _ FACTory I Restore Factory Calibration Recalls the calibration factors stored by the factory before delivery or after service CALibration ROSCillator USER Restore User Cali
124. KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 15 KOHM 1 0 1W 100PPM 0805 RESISTOR 33 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 Part Number 532211712497 532211712497 532211712505 532211712497 532211712505 482205110121 403100222020 532211712499 403100239030 403100227010 532211712497 532211712505 532211712497 532211712497 403100215010 403100227010 532211712507 532211682264 403100268090 403100268090 532211712509 532211712507 532211712497 532211712497 532211712509 482205110109 403100247020 403100233020 403100233020 532211712499 403100210050 532211712499 532211712499 532211712499 532211712497 532211712499 403100268030 403100233030 403100247030 403100247020 403100282090 403100222020 532211712505 403100215020 532211712502 532211712497 532211712497 532211712505 403100247020 532211712505 532211712497 403100222020 532211712505 532211712497 403100215020 403100247020 532211712505 403100215030 403100233030 403100247020 532211712505 532211712497 403100222020 532211712499 Pos R400 R402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R413 R414 R416 R417 R418 R419 R421 R422 R423 R424 R425 R426 R427 R430 R431 R432 R434 R435 R437 R438 R440 R441 R443 R4
125. MHz mVrms dBm Input A Input B 10 15 23 50 15 23 100 15 23 200 15 23 300 25 19 Table 2 5 Sensitivity for inputs A B at various frequencies Voltage Recall the DEFAULT settings Press MEAS FUNC Volt gt Vpp gt A Press INPUT A and select DC coupling Do not apply an input signal to Input A yet Press EXIT OK The display should now indicate disregard the main parameter Vpp VMIN 0 0 015 V and Vmax 0 0 015 V Adjust the current limit of the voltage source to lt 200 mA Connect 2 500 Vpc to Channel A using the external low pass filter on the input The display should now indicate 2 500 0 040 and VMAX 2 500 0 040 V 2 4 Performance Check Short Form Specification Test Repeat the measurement with inverted polarity Press INPUT A and select 10x Press EXIT OK CAUTION Before the next step make sure the input impedance is still 1 MO Apply ing more than 12 V without proper current limiting may cause extensive damage to the main PCB if the impedance is set to 50 Change the DC level to 50 00 V The display should now indicate 50 00 0 65 V and 50 00 0 65 V Repeat the measurement with inverted polarity Disconnect the DC voltage from Channel A Remove the external low pass filter Press INPUT A and select 1x Press EXIT OK Connect a si
126. Parts Main Board Version B Pos R537 R538 R539 R540 R541 R543 R544 R545 R546 R547 R548 R549 R551 R552 R553 R554 R555 R557 R558 R559 R560 R561 R562 R563 R564 R565 R566 R567 R568 R569 R570 R571 R572 R573 R575 R576 R577 R578 R579 R580 R581 R582 R583 R584 R585 R586 R587 R589 R590 R591 R592 R593 R594 R595 R596 R597 R598 R599 R6 R600 R601 R602 R603 R604 Description RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 91kohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 1 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 15 OHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W
127. Performance Check 2 7 Important Information 5 3 5 4 Input Amplifiers AC DC Coupling 4 6 4 14 Adjustment 7 12 Attenuator 4 6 4 14 Buffer 4 6 4 14 Comparator 4 7 4 15 Crossover Switch 4 7 4 15 saa Sgt ete 4 6 4 14 General Description 4 6 4 14 Impedance Converter 4 6 4 14 Impedance Selector 4 6 4 14 4 6 4 14 Logic Level Conversion Trigger Level Generation 4 7 4 15 Troubleshooting 6 8 6 36 Int Ref Output Description 4 8 4 16 Performance Check 2 6 Internal Reference Output Location of 4 10 4 18 Internal Reset Processor Circuits 4 8 4 16 K Keyboard Description 4 6 4 14 Performance Check 2 2 Line Voltage 1 4 M Measuring Functions Performance Check 2 6 Measuring Logic Description 4 8 4 16 FPGA VILAM b died ad 4 8 4 16 Interpolators 4 8 4 16 Troubleshooting 6 55 Microprocessor amp Memories Troubleshooting 6 43 Microprocessor Bus amp Interfaces Troubleshooting 6 49 N Negative ECL Logic Levels 6 4 6 32 O Operating Conditions 6 4 6 32 1 2 Options Location 3 2 Oscilla
128. R362 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R290 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 403100247020 8363 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R291 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 8364 RESISTOR 22 kOhm 1 0 1W 100PPM 0805 403100222030 R292 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 8365 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R293 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 8367 RESISTOR 22 kOhm 1 0 1W 100PPM 0805 403100222030 R294 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 403100247030 R368 RESISTOR 220 kOhm 1 125W 100PPM 1206 482205152204 R295 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R369 RESISTOR 220 kOhm 1 125W 100PPM 1206 482205152204 8296 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R370 RESISTOR 33 kOhm 1 0 1W 100PPM 0805 403100233030 R3 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 R371 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 403100247030 R303 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 403100247030 R372 RESISTOR 68 kOhm 1 0 1W 100PPM 0805 403100268030 R305 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R373 RESISTOR 33 kOhm 1 0 1W 100PPM 0805 403100233030 R306 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R374 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 403100247030 R307 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R375 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R308 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R376 RESISTOR 82 Ohm 1 0 1W 100PPM
129. RESISTOR 15 Ohm 1 0 1W 100PPM 0805 403100215090 R622 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 R558 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R623 RESISTOR 470 Ohm 1 0 1W 100PPM 0805 403100247010 R559 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 8624 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R560 RESISTOR 100 1 0 1W 100PPM 0805 532211712501 R625 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 R561 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R626 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 8562 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 8627 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 R563 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R629 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 8564 RESISTOR 330 Ohm 1 0 1W 100 0805 532211712508 R630 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 403100222020 R565 RESISTOR 330 Ohm 1 0 1W 100 0805 532211712508 R640 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R566 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R641 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R567 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R642 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 8568 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 R643 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R569 RESISTOR 150 Ohm 1 0 1W 100PPM 0805 403100215010 R644 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 403100222020 R570
130. RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 Part Number 482205110109 482205110109 482205110109 482205110109 403100210050 403100222010 403100247010 532211712498 403100233020 403100233020 532211712498 532211712498 532211712498 532211680447 403100215030 403100233040 403100215040 403100222020 532211712499 403100222020 403100210050 403100233030 532211712499 532211712498 482205110109 482205110109 403100215010 532211712498 482205110109 482205110109 403100222020 482205110109 532211712498 403100247020 403100233010 403100233010 482205154701 482205154701 403100233010 482205154701 403100233010 403100215020 403100233010 403100215030 403100233010 532211712498 403100233010 403100233010 403100233010 403100233010 403100247020 532211712507 403100247020 532211712497 532211712505 532211712507 403100233020 403100247020 482205151001 403100222020 482205151001 532211712507 532211712507 532211712505 Replacement
131. See Fig 6 58 Figure 6 56 PCB1 survey 6 34 Troubleshooting Fan Control O R574 The fan is connected to 15 VU over a speed control circuit It is only ON if a control signal from the processor is present Bass O The first 8 minutes after power up the fan will run at a fixed gm BE speed fed with 8 3 V After that the fan is temperature con trolled The processor reads the temperature from U39 via the FC bus Depending on the temperature the fan is fed with a a EB DC voltage between 8 and 13 5 V The processor uses a PWM a signal that is filtered to control the fan 53 8 46 505 O 3 gt E C397 561 de 5 m Z f NJ 1 10726894 gt lu L gt i 8 mm E C399 E mem O C399 8 GND amp C464 19 1 Ce57 gt 20 2 wg bess 06372 ce62 R37 g MA Jis 130 a Le gt C404 16 E 048 E 544449 R554 eng 655 S RSS 137
132. See Figure 7 2 Adjust R197 until the DMM reads 17 0 2 mV Use a screwdriver type of adjustment tool Don t forget to resolder the RF shield Power Supply AC DC BOARD 5 V adj RF SHIELD Figure 7 4 Adjusting 5 V and checking 15 V and 15 V W Setup Do as described under Preparations above Select default settings by keying in USER OPT Save Recall Recall Setup Default m Adjustment Connect the DMM to test point X9 and ground metal shield lid over input amplifiers See Figure 6 4 and Figure 7 4 Adjust the 5 V trimmer on the AC DC power supply board with a screwdriver type of adjustment tool until the DMM reads 5 10 0 005 V Check that the voltage from the AC DC power supply at X26 is 15 0 7 V Check that the voltage from the AC DC power supply at X21 is 15 0 7 V Note Adjusting the 5 V does not affect other settings in the instrument External Reference Input m Setup Do as described under Preparations above Select default settings by keying in USER OPT Save Recall Recall Setup Default Connect 1 MHz sinewave signal with amplitude 0 1 Vims 0 28 into 50 Q from an LF synthesizer to the external reference input Use a 50 Q termination on the input Set an oscilloscope with X10 probe to 10 us div 100 mV div including probe and AC coupling m Adjustment Connect the probe to
133. Several options exist Prescalers on separate PCBs covering different fre quency ranges 3 GHz and 8 GHz Two OCXO timebases very high amp ultra high stability Rackmount kit The chassis of the counter consists of a front piece molded in aluminum an aluminum rear panel and two extruded alumi num bars that hold the front and rear panels together This unit can be slid into the aluminum cover of the instrument The main circuit board is fixed to the two bars The display circuit board is fixed to the front piece A detachable connec tor joins the electronics of the front unit and the main board and the molded front piece is fixed with screws to the two alu minum bars The rear panel is also fixed to the bars with screws The front unit contains all functions needed for the user com munication keyboard display and input BNCs All other electrical functions are on the main board The rear panel has no PCB The connectors here are all soldered directly to the main circuit board 4 12 Block Diagram Description Block Diagram Figure 4 7 contains a block diagram of the electrical functions of the counter They are divided among the main circuit board the display board the rear panel and the optional prescaler board See the schematic diagrams in Chapter 9 for complete information Most functions are placed on the main board Input amplifiers with trigger level circuits Power supply Measurement log
134. TP9 5 1 0 05 V TP21 15 1 V and TP26 15 I V on the main circuit board See Figure 6 2 Note that there is a 5 V trimmer on the module If the 5 V is not correct disconnect the cable to 117 on the main circuit board Put a 47 Q I W resistor on the connector according to Fig ure 6 2 Measure on the connector 5 1 0 05 V 15 1 V and 15 x 1 V It can be difficult to measure the resistance in the supply con nector J17 on the main circuit board because charges are kept by capacitors some time after line power is removed Remove the cable from the AC DC module The resistance between 5 V and ground should be approximately 700 Q See Fig ure 6 2 In a timer counter with all capacitors uncharged 15 V and 15 V should be at least MQ Another way to test J17 is to connect 3 DC voltages from a separate bench power supply directly to J17 suitable connec tor MOLEX 09 91 0600 See Figure 6 2 The currents drawn from the different supply voltages depend on options in stalled Before making this measurement you should remove any prescaler option A timer counter without options gives the following typical results 5 V 0 7A 15 0 25A 15 0 4 The oscillator increases the 15 current between 0 35 A cold and 0 1 A warm A block diagram of the secondary power supply is shown in Figure 6 1 All secondary voltages are switched off in standby mode except 12 VU for the optional o
135. X7R 0805 532212613638 C335 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C275 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C337 CAPACITOR 10pF 5 50V NPO 0805 222286115109 C276 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C338 CAPACITOR 100pF 5 50V NPO 0805 222286115101 C277 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C339 CAPACITOR 15 pF 20 6 3V 6 0X3 2 MOLD 532212411418 C28 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C34 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C280 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C340 CAPACITOR 100nF 20 25V X7R 0805 532212613638 Replacement Parts Main Board Version 8 17 Pos C341 C342 C343 C344 C345 C346 C347 C348 C349 C35 C350 C351 C352 C353 C354 C355 C357 C358 C359 C36 C360 C361 C362 C363 C364 C365 C366 C367 C368 C369 C37 C370 C371 C372 C373 C374 C375 C376 C377 C378 C379 C380 C381 C382 C383 C385 C386 C387 C388 C389 C390 C391 C392 C393 C394 C395 C396 C397 C398 C399 C400 C401 C402 C404 8 18 Description CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 10pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1 pF 20 16V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACI
136. X7R 0805 532212613638 D53 0 2A 545 SOT23 SMD 482213082262 C549 CAPACITOR 1nF 2096 50V X7R 0805 532212234123 J12 CONNECTOR 20POL HEADER SMD 15 91 0200 242202505569 C560 CAPACITOR 1nF 20 50V X7R 0805 532212234123 J13 CONNECTOR 2x10 POL SMD 242202518436 C561 CAPACITOR 1001 6 3V 202202900655 J15 CONNECTOR 20POL HEADER SMD 15 91 0200 242202505569 Replacement Parts Main Board Version 8 19 Pos J17 J22 J25 J28 J3 K1 K2 K3 K4 5 K7 Ka L10 L11 L12 L13 L14 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25 L26 L27 L28 L29 L3 L30 L31 L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 Description CONNECTOR 6POS 39 28 1065 CONNECTOR 4POL USB PCB CONNECTOR 24 POL 57LE 20240 7700D35G CONNECTOR HEADER 2POS SMD AMP 6 176125 2 CONNECTOR 2 POL F095 SINGLE ROW RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 4 3yH 1 6A FILTER EMI BLM41PF800S FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21
137. adjustment Compare the two deviation values and check that the calibration procedure has been successful Fill out the calibration protocol if required m Timebase Calibration via the GPIB or the USB The frequency calibration can also be performed by sending commands over one of the interface buses Always end the commands with the Operation Complete Query OPC Use the following command sequence CAL ROSC INIT CAL ROSC FREQ num value select and con nect reference frequency CAL ROSC START SYST ERR check for errors CAL ROSC STOR yyyymmdd enter calibration date Voltage Reference Although a counter timer is chiefly an instrument for measur ing time and frequency related parameters this instrument also has voltage measurement capabilities that you can benefit from Under certain circumstances you can do without a DVM in a test system but then you have to calibrate and ad just the built in voltage reference regularly to ensure the spec ified uncertainty Voltage Calibration Procedure m Test Equipment You should preferably use a dedicated DC voltage calibrator with an uncertainty at least a magnitude less than the measure ment specification see Chapter 8 of the Operators Manual Alternatively you can use a stable laboratory power supply with an external precision voltage divider for instance a ten turn potentiometer in combination with an ad
138. are except for 12 VU to the oven oscillator switched off in standby mode Linear regulators are used for generating stable voltages with low noise and without spikes Some of them have a resistor net at the input to dissipate part of the heat generated Thus the regulator itself will run cooler The following voltages are generated in this way 3 3 VA from 5 VU 5 2 VA from 15 VU 5 2 VI from 12 VA 2 1 V from 12 VA 12 VA from 15 VU 12 VA from 15 VU 12 VU from 15 VU to oven oscillator not switched off in standby mode For digital and general use supply voltages are generated by DC DC converters 3 3 VD from 5 VU 5 VD from 5 VU via a switch IC 15 VD from 15 VU via a switch transistor 1 8 V from 5 VU Communication Interfaces Both a GPIB and a USB interface are available for communi cation with external bus controllers The connectors are lo cated on the rear panel The GPIB consists of an IC Only 8 bits of the 32 bit micro processor bus is used Due to different supply voltages for the processor 3 3 V and the GPIB circuit 5 V a buffer IC is used for isolating the 5 V GPIB IC from the processor bus A 40 MHz crystal is used for generating a local clock The USB consists of an IC It communicates with the proces sor over the 32 bit microprocessor bus but only 16 bits are used A 6 MHz crystal is used for generating a local clock Rear Panel Unit The rear panel is made of aluminum A
139. at R281 The DAC is controlled by the processor via the SPI bus The frequency adjustment range should be wide enough to al low for more than 10 years of oscillator aging The oscillator must be replaced if the normal control voltage range cannot make the oscillator output 10 000000 MHz As a last resort to exclude external causes of malfunction desolder the oven oscillator from the main circuit board Place it upside down and connect 12 V and ground accord ing to Figure x A cold oven oscillator draws approximately 0 30 0 35 A During heating the current consumption varies After 10 minutes it should stabilize on less than 0 1 A The output Vier should be approximately 5 V and the 10 MHz sinewave output signal should have an amplitude of more than 2 5 V measured with a 1 MQ 10x probe The control input has an internal bias to keep the output frequency in the middle of the range Adjust the control voltage between 0 V and 5 V and check the output frequency range with a fre quency counter The minimum trimming range should be 5 Hz 10 000000 MHz must be reached somewhere between 0 V and 5 V If the oven oscillator circuitry is repaired a new calibration must be performed See Chapter 7 A new factory calibration by means of the utility program should also be performed External Reference Input See Figure 6 14 and Figure 6 17 The input signal is amplified in U31 The output signal from the amplifier should be a square wav
140. board or a signal from the external reference input that accepts the fol lowing frequencies 1 5 and 10 MHz A frequency multiplier transforms the external signal to 10 MHz The selected 10 MHz reference is always available at the internal reference output See Figure 6 14 The main PCB is prepared for both types of internal timebase but only one of them is mounted The selection is made at the factory You have to run the utility program see page 5 3 if the oscillator is to be changed Closed Case Calibration is used for adjusting the oscillator On power up the processor outputs the setting that is stored as the correct one for 10 000000 MHz It will take some time for the oven oscillator to reach the correct frequency A calibration must be performed if the adjusting voltage should move during opera tion not only on power up The selection between the on board oscillator and the external reference is made in the FPGA The 10 MHz signal from the other source is switched off Connect a 10 MHz signal to the external reference input Use the SETTINGS menu to alternate between internal and exter 6 12 Troubleshooting nal oscillator Check for correct signals at U4 6 for the stan dard oscillator at U4 8 for ther oven oscillator and at U33 3 for the external reference Check also that the selected timebase reference is present at the internal reference output BNC connector on the rear panel Standard Oscillator See Figure 6 14 an
141. by means of the utility program should also be performed External Reference Input See Figure 6 67 and Figure 6 70 The input signal is amplified in U31 The output signal from the amplifier should be a square wave with logic levels repro ducing the timing characteristics of the input signal Check the signal at U32 11 U32 generates a short pulse approxi mately 40 ns for each input cycle check at U32 9 These pulses generate a broad spectrum of harmonics and the following high Q 10 MHz crystal filter allows only a 10 MHz sinewave to pass Measure at X19 Note that the trimmer C442 1s used for maximizing the amplitude at X19 Check that the amplitude is not less than 1 If external reference is not selected the gate U33 stops the 10 MHz signal The control signal on U33 1 1s then low 100 MHz Multiplier See Figure 6 67 and Figure 6 69 100 MHz is used in the measuring logic mainly as a reference clock but also for other purposes A PLL is used for multi plying the 10 MHz reference to 100 MHz On power up the processor sets up the PLL IC U9 via the SPI bus An output signal PLL LOCK tells the processor if the loop is locked high level A VCO consisting of an inverter U47 and an LC circuit in the feedback loop is controlled by the PLL IC The DC voltage from U9 2 is filtered and controls a capaci tance diode The VCO frequency changes with the capaci tance The loop can handle the switching of 10 MHz refer ence f
142. complete USB unit It is not powered from the USB bus The USB IC 034 has a 6 MHz oscillator Check at C416 The connection to the GPIB has 8 data bits 5 address bits chip select wrn rdn and a special control signal for the level shifting IC U38 U38 is a buffer between the logic level of 3 3 V for the processor and the logic level of 5 V for the GPIB IC U37 An interrupt signal from the GPIB IC is con nected to the processor See Figure 6 91 for a typical timing diagram The GPIB IC is a complete GPIB unit The GPIB IC U37 has a 40 MHz oscillator Check at TP20 Only the selected interface is involved in communication on the microprocessor bus Since both interfaces consist of only one IC each trouble shooting is fairly simple Check that the oscillator 40 MHz or 6 MHz is running Check that the processor communicates with the selected IC Make sure the external controller GPIB or USB and the interconnection cable used are OK The transfer of measurement results from the FPGA to the mi croprocessor goes via the 32 bit microprocessor bus and nor mal reads There are some extra handshake pins to facilitate the transfer An interrupt signal is sent to the microprocessor if results are to be read ALERT X30 X28 EMPTY indicates that it is allowed to read results and the microprocessor sets a signal high to indicate that it is reading results UPRD U11 203 Results are always read in packets of 8 words See Figure 6 9
143. ground OV OV Input voltage High 243 9 V gt LIV gt gt 42V Low VIL lt 3 5 lt 1 5 lt V lt 0 8 Output voltage High VOH gt 4 V gt 1V gt 4 9 V gt 2 7 V Low VOL lt 43 3V 17V lt 0 05 V lt 0 4 V Bias ref voltage 37 V 13V VBB Table 6 3 Logic levels 6 32 Troubleshooting do the checks in Chapter 2 Performance Check Recalibrate 1f required by following the adjustment instructions in Chapter 7 Calibration Adjustments Logic Levels The 90 contains logic of different families The levels of the standard families are listed in Table 6 3 In addition to these families there is also low level logic requiring lower supply voltages e g 3 3 V and 1 8 V Required Test Equipment To be able to test the instrument properly using this manual you will need the equipment listed in Table 2 1 The list con tains the critical parameter specifications Operating Conditions Power voltage must be between 90 Vac and 260 Vac The in strument adapts automatically to the applied voltage Basic Functional Units These are the units that are described in this chapter with ref erence to the page where the section starts Power Supply p 6 32 Input Amplifiers p 6 36 Timebase Reference Circuits p 6 40 Prescalers p 6 43 Microprocessor amp Memories p 6 43 Microprocessor Bus amp Interfa
144. is lit on the front panel To keep the AC DC module stable in this mode a dummy load is connected to draw a quiescent current of 0 1 A at 5 V The three main voltages are 15 V 5 V and 15 V from the AC DC module All other supply voltages are generated from them and are except for 12 VU to the oven oscillator switched off in standby mode Linear regulators are used for generating stable voltages with low noise and without spikes Some of them have a resistor net at the input to dissipate part of the heat generated Thus the regulator itself will run cooler The following voltages are generated in this way 3 3 VA from 5 VU 5 2 VA from 15 VU 5 2 VI from 12 VA 2 1 V from 12 VA 12 VA from 15 VU 12 VA from 15 VU 12 VU 15 VU to oven oscillator not switched off in standby mode For digital and general use supply voltages are generated by DC DC converters 3 3 VD from 5 VU 5 VD from 5 VU via a switch IC 15 VD from 15 VU via a switch transistor 2 5 from 5 VU 1 8 V from 5 VU Communication Interfaces Both a GPIB and a USB interface are available for communi cation with external bus controllers The connectors are lo cated on the rear panel The GPIB consists of an IC Only 8 bits of the 16 bit micro processor bus is used Due to different supply voltages for the processor 3 3 V and the GPIB circuit 5 V a buffer IC is used for isolating the 5 V GPIB IC from the processor
145. link between your PC and the instrument over GPIB or USB by using a dedicated application program for instance NIMax from National Instruments No other instruments should be connected 5 2 Introduction to the same bus Firmware upgrade over USB works with firmware version V1 07 or above installed in the instrument Send IDN to the instrument and watch the response If the ID string is OK you can exit the communication program and start the upgrading procedure Dowaload the latest firmware file example name 90 109 csl hex and the latest loader SW ple name Loader exe to a common directory on your PC Start the Loader exe program Press Load to open the firmware file Follow the in structions on screen The update is automatic and pro cess information can be seen on the PC screen as well as on the instrument display Do not interrupt the process too early as it may take between a few minutes up to an hour mostly depending on different possible hardware combinations A thermometer indicator on the PC moni tor gives status reports The crucial part of the process is when the message FLASH updating uninterruptible is displayed Do not under any circumstances interrupt the loader while this message is visible If the process fails during this part it may be impossible to control the instrument from the bus as well as from the front panel Then you have to load new firmware over the JTAG
146. number of connectors mounted on this unit are accessible to the user see Figure 4 9 UO GPIB communication connector USB communication connector INPUTS External reference BNC External arming BNC Power supply inlet including EMI filter Optional main inputs replacing corresponding front panel inputs INPUT A INPUT B INPUT CA 10 MHz OUT EXT REF EXT ARM 20774 GPIB IEEE 488 Vrms IN 50W FREQ INPUT INPUTE A A Figure 4 9 Rear panel PM6690 Hardware Functional Description 4 17 OUTPUTS Internal reference 10 MHz BNC Prescaler Circuit Board There are several different optional prescalers available with different frequency ranges The prescaler is located on a sepa rate circuit board that is connected to the main circuit board with a PCB connector A typical prescaler consists of a limiter an amplifier a fre quency divider and a detector The limiter and the amplifier condition the input signal so that the amplitude to the divider is constant The divider scales the input signal so that it can be handled by the measuring logic on the main circuit board A detector switches off the output signal from the divider if the input level is too low for the divider to work cor
147. of the timer counter Manual Trig DC 50 Q Att x1 Select Single Period as measurement function Connect a symmetrical pulse signal with fast rise fall time 100 us period time and 5 V amplitude from a pulse generator to a power splitter Connect one side of the power splitter to Input A on the timer counter and connect the other side of the power splitter to Input A on the oscilloscope Connect a 10X 500 Q probe to Input B on the oscillo scope Set the oscilloscope to 10 us div and Input A to 50 Q DC 0 5 V div and Input to 50 Q DC 100 mV div including probe m Adjustment Connect the probe tip to the center hole of J7 The sur rounding holes are suitable ground connections See Fig ure 7 2 Adjust C106 and C496 until the pulses on the oscillo scope look the same Use Temex 4192 adjustment tool Repeat all steps above for Input B on the timer counter Con nect the probe tip to J9 Adjust C137 and C497 7 12 Input Amplifiers 1 i gt Overcompensation i Li 1 Correct compensation _ _ Undercompensation Input signal Figure 7 3 Linearity compensation Step Response X10 m Setup Keep the settings on the timer counter and the oscillo scope from Step Response X1 Select Att X10 for Input A on the timer counter Reconnect the signal from the power splitter to Input A on the timer counter Set Input B on the oscillosco
148. outlined in Chapter 1 of the Operators Manual This performance procedure is intended for checking the instrument s specification incoming inspection to determine the acceptability of newly purchased instruments and recently recalibrated instruments checking the necessity of recalibration after the specified recalibration intervals NOTE The procedure does not check every facet of the in strument s calibration rather it is concerned primarily with those parts of the instrument which are essential for determining the function of the instrument It is not necessary to remove the instrument cover to perform this procedure Test Equipment Type of Equipment Required Specifications 10 MHz 1 10 8 e g 908 for calibrat ing PM6690 _1_ 10 MHz 11079 e g 909 for calibrat ing PM6690 _5_ 8 PM6690 _6_ DC 50 V to 50 V e g 5500A for calibrating the built in voltage refer Voltage Calibrator ence alternatively corresponding DC power supply DVM with uncertainty lt 0 1 Square Sine up to 10 MHz 10 Vrms Reference Oscillator LF Synthesizer 2 ns rise time 5 V peak gt 10 MHz continuous 8 one shot trigger Oscilloscope 350 MHz lt 3 voltage uncertainty 10 MHz to 3 or 8 GHz dep on prescaler option 10 MHz ext ref Power Splitter 50 Q 6 dB BNC T Adapter F M F BNC Termination 50 Q feedthrough BNC 50 kHz for 1 MQ load RF Signal Generator
149. over the PC board 6 8 Troubleshooting Test Points Approximate Voltage R140 to R141 R212 to R213 1 00 R156 to C109 R229 to C140 0 40 U1 pin 2 U2 pin 2 0 20 Vy U1 pin 3 U2 pin 3 0 20 Vp U1 pin 6 U2 pin 6 1 00 Vac R151 to R157 R223 to R230 0 40 U3 pin 9 U3 pin 13 0 40 R309 and R314 R313 and R315 ECL levels 1 0 V and 1 7 V R301 both sides R304 both sides LVPECL levels 1 6 V and 2 6 V Test the trigger level by manually setting the following trigger levels Check the voltage at X6 X7 and U3 pin 10 pin 12 Set Level Approximate Voltage 1 V 0 41 V 4 V 1 65 V 4 V 1 65 V 1V 0 41 V Set the timer counter to default Select the measuring function single period Connect the 1 kHz square wave to channel A B Measure with oscilloscope at X6 X7 See figure dd for a typical signal If any repair work has been done on the input amplifiers both adjustment and voltage calibration must be performed after wards If any repair work has been done on the trigger level circuits at least voltage calibration must be performed after wards See Chapter 7
150. personnel only To re duce the risk of electric shock do not perform any servicing other than that specified in the Operators Manual unless you are fully qualified to do so Caution and Warning Statements Introduction Read this chapter carefully before you check adjust or repair the instrument It is essential for your own safety to know the restrictions that are applicable to all equipment that can be connected to line power Therefore read the section on Safety Precautions be low In addition to the general statements given in this chapter you will find specific caution and warning statements where nec essary throughout the manual Safety Precautions This instrument has been designed and tested for Measurement Cate gory I Pollution Degree 2 in accordance with EN IEC 61010 1 2001 and CAN CSA C22 2 No 61010 1 04 including ap proval It has been supplied in a safe condition This manual contains information and instructions that should be followed by the user and the service technician to ensure safe operation and repair in order to keep the instrument in a safe condition It is essential that you follow generally ac cepted safety procedures in addition to the safety precautions specified in this manual The instrument is designed to be used by trained personnel only Removing the cover for repair maintenance and adjust ment of the instrument must be done by qualified personnel who are aware of the haz
151. processor will find the correct PWM signal to make the internal reference frequency equal to the external reference frequency The optional oven controlled oscillator is a complete oscilla tor in a small hermetic metal box An internal accurate DC voltage is available for use as a reference for a 12 bit DAC The filtered output voltage from the DAC sets the frequency of the oven oscillator The processor controls the DAC via the SPI bus The same Closed Case Calibration as for the stan dard oscillator is used The oven oscillator is kept warm if the line power is connected to the timer counter even if it is switched off in standby mode CROSSOVER BUFFER SWITCH LVL SHIFT ECL e LVPECL ECL SIR FLIP FLOP LVL SHIFT TRGLVLA 21901 ONIYNSVAW OL TRGLVLB 9 Figure 4 8 Input amplifier block diagram Hardware Functional Description 4 15 The 10 MHz reference signal is multiplied in a PLL to 100 MHz The 100 MHz signal is used in the measuring logic as a reference The processor controls the PLL IC with the SPI bus A 100 MHz LC oscillator is used as the controlled ele ment where part of the C is a variable capacitance diode Its capacitance is controlled with a DC voltage from the PLL IC thus changing the frequency The 10 MHz reference signal is applied to the PLL IC as its reference and the 100 MHz output frequency is exactly 10 times the reference frequency Exte
152. regulators are used for some voltages to ensure mini mum noise Check the TPs below TP12 3 3 VA from 5 VU TP8 5 2 VA from 15 VU TP10 12 VA from 15 VU TP62 5 2 VI from 12 VA 25 2 1 from 12 VA TP16 12 VA from 15 VD 17 12 VU from 15 VU to oven oscillator not switched off in standby mode For digital and general use some voltages are generated by DC DC converters Check the following TPs TP14 3 3 VD from 5 VU 2 5 from 5 VU TP2 1 8 V from 5 VU Some voltages derived directly from the AC DC module are used as secondary supply voltages without further regulation and they have semiconductor switches in series to make it possible to shut them off in standby mode Check the TPs be low TP15 15 VD from 15 VU TP11 5 VD from 5 VU TP13 5 VA from 5 VD These 13 secondary voltages are used all over the instrument All secondary supply voltage lines are segmented into branches with ferrite beads See the schematics This makes it easier to isolate short circuits by removing ferrite beads tem porarily See Fig 6 4 See Fig 6 5 Figure 6 3 1 survey 6 6 Troubleshooting Fan Control The fan is connected to 15 VU over a speed control circuit It is only ON if a
153. some voltages are generated by DC DC converters Check the following TPs X14 3 3 VD from 5 VU X2 1 8 V from 5 VU Some voltages derived directly from the AC DC module are used as secondary supply voltages without further regulation and they have semiconductor switches in series to make it possible to shut them off in standby mode Check the TPs be low X15 15 VD from 15 VU 5 VD from 5 VU X13 5 VA from 5 VD These 12 secondary voltages are used all over the instrument All secondary supply voltage lines are segmented into branches with ferrite beads See the schematics This makes it easier to isolate short circuits by removing ferrite beads tem porarily The microprocessor U13 has an internal linear regulator that generates 1 8 V from 3 3 V This voltage is used by the pro cessor core and can be checked at X66 See Fig 6 57
154. take some time for the oven oscillator to reach the correct fre quency A calibration must be performed if the adjusting volt age should move during operation not only on power up The selection between the on board oscillator and the external reference is made in the FPGA The 10 MHz signal from the other source is switched off Connect a 10 MHz signal to the external reference input Use the SETTINGS menu to alternate between internal and exter nal oscillator Check for correct signals at U4 6 for the stan dard oscillator at U4 8 for the oven oscillator and at U33 3 for 6 40 Troubleshooting the external reference Check also that the selected timebase reference is present at the internal reference output BNC con nector on the rear panel Oven Oscillator See Figure 6 68 and Figure 6 69 The oven oscillator is a self contained unit enclosed in a metal box and soldered to the main circuit board It cannot be repaired and must be replaced with a new oscillator if it is faulty Let the oven oscillator warm up 10 minutes before starting measurements The 12 V supply voltage can be checked at X17 The oven oscillator should be powered also in standby mode The oven oscillator outputs a 10 MHz signal if powered It should be 1 3 V measured at R282 If not selected a gate U4 stops the signal the control signal U4 9 is then low The frequency is controlled by a DAC 1 5 Its reference voltage is derived from the oscillator
155. 0 50V X7R 0805 532212234098 C293 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C226 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C294 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C227 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C295 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C228 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C296 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C229 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C297 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C23 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 225201471398 C298 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C230 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C299 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C231 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C3 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C232 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C30 CAPACITOR 2 20 uF 20 6 3V 3 2X1 6 MOLD 532212410685 C235 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C300 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C236 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C301 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C237 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C302 CAPACITOR 1 20 50V 0805 532212234123 C238 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C303 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C239 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C304 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C24 CAPACITOR 10pF 5 500V NPO 1206 532212613643 C305 CAPACITOR 100nF 1096 16V X7R 0
156. 0 532211712499 403100222020 403100268020 403100222020 403100200000 403100268020 403100222020 403100268020 403100222020 403100268020 403100222020 403100268020 403100222020 403100268020 403100215020 403100247010 403100222020 532211712509 532211712499 532211712498 403100233010 532211712498 532211712498 482205110109 482205110109 482205110109 482205110109 482205110109 403100222020 403100233020 482205110109 482205110109 482205110109 482205110109 482205110109 532211712498 482205110109 482205110109 482205110109 482205110109 482205110109 532211712505 482205110109 Replacement Parts Main Board Version 8 23 Pos R474 R475 R476 R477 R478 R479 R480 R481 R482 R483 R484 R485 R486 R487 R488 R489 R490 R491 R492 R493 R494 R495 R496 R497 R498 R499 R5 R500 R501 R502 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 R517 R518 R519 R520 R521 R522 R523 R524 R525 R526 R527 R528 R529 R530 R531 R532 R533 R534 R535 R536 8 24 Description RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 220 ohm 1 0 1W 100PPM 0805 RESISTOR 470 OHM 1 0 1W 100 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM
157. 00 9 2 2 GR OPA277 4 NOT UsED 5156 5VTR Y U46C HTL uro Hf x PER 6 zs R13 R14 7 10 1 12 SCIk 10K 10K MAX5156 208 1 U46B 2 R567 DAC U24B U26B c382 U28B Es FBB 100 gt OPA277 OPA277 100NF gt OPA277 mH RefB Boo 277 829 u46D C485 7056 5156 41 NOT USED 88 5156 4 12VA EE 1 5 3 3 z 1 Schematic Diagrams 9 29 This page is intentionally left blank 9 30 Schematic Diagrams CPU Memories and Parts of the Counter Circuit PCB 1 sheet 1 7
158. 00PPM 0805 403100239030 R391 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 R323 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 8392 RESISTOR 4 7 kOhm 1 0 1W 100 0805 403100247020 R324 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R393 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R325 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 8394 RESISTOR 15 kOhm 1 0 1W 100PPM 0805 403100215030 Replacement Parts Main Board Version A 8 11 Pos R395 R396 R397 R398 R399 R4 R400 R402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R413 R414 R416 R417 R418 R419 R421 R422 R423 R424 R426 R427 R430 R431 R432 R434 R435 R437 R438 R440 R441 R443 R444 R445 R446 R447 R448 R449 R450 R451 R452 R453 R454 R455 R456 R457 R458 R459 R460 R461 R462 R463 R464 R465 R466 R467 R468 8 12 Description RESISTOR 33 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 82 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 82 Ohm 1 0 1W 100PPM 0805 RESISTOR 2
159. 015 CAS CAS 18 RAS 18 RAS 1 1 1 37 CKE czat 0962 C310 C311 C312 C313 L C540 C541 C542 C543 CM GGG GLK ZACZ 100NF T 100NF T 100NF T 100NF T 100n 100n 100n in in 9999999 ogogo 225000099090000 DOMO 1 2 15 50002222209 K4S561632D LDOM DOMS LDQM 55559858 39 UDOM 16 wg 191 cs 455616320 455616320 2 l ere gt 1 C 1344443 osos L C564 C314 C315 C316 C545 C546 C547 C548 C549 C560 100 C6 3V 100 100NF T 100NF T 100NF T 100n 100n 100 in 9999999 ogogo utes gt gt gt 09998880400 5616320 gt gt gt R gt gt gt gt gt gt gt aa aa 4 25859 26606 L4 8 m 4 a Not_used 0 23 2 us 496 ma I pouT 00 31 2 RK Not Used a 7 R300 3 3V6 8 jot Use RB LOCK m RUBI DI UM 10 OC 10 Re 33V U4 1 Not Used 43 14 15 1 R298 Not Used 7 C199 m 4 4 Ip 10VHZ_RUBIDIUM Not Used 5 C200 Rene svPo iik NOT USED MINICOAX 3 Not Used GATEOUT Dy w 5VD x13 POWERON B L56 I TRCLVL 5VA BLM41P800S SPIDATA M 3 3VD J 3 3VD TRGLVL A 12VA 12VA 2VA TRG_LVL_B 5VA 5V TRG_LVL_A 3 5 PLATED L27 BLM21A102S R445 gt 5VTR R10 U24A 4 RM R12 22K ES 10K 10K C376 C374 2 FUE 0264 4 LT1009CD U46A R566 DAC 4 FBA 1
160. 02SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD Part Number 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254900035 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 241254100458 242254900035 242254900035 242254943133 242254943133 242254943133 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 Description SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD TRANSISTOR BF513 03A20V SOT23 TRANSI HF N SMD BFR93A 35 12V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR BFT93 35MA 12V SOT23 TRANSISTOR 25 MA BFR92A 20V 50723 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 517 05A 15V SOT23 TRANSISTOR 517 05A 15V SO
161. 05 0805 0805 0805 0805 0805 0805 1206 0805 0805 0805 0805 0805 0805 0805 0805 C248 CAPACITOR 27pF 5 50V NPO 0805 C249 CAPACITOR 27pF 5 50V NPO 0805 C25 CAPACITOR 10pF 5 500V NPO C250 CAPACITOR 1001 6 3V C251 CAPACITOR 22uF 6 3V 1206 C252 CAPACITOR 2201 20 10V 0810 SMD C253 CAPACITOR 680pF 20 63V NPO C254 CAPACITOR 220pF 5 50V NPO C255 CAPACITOR 100nF 20 25V X7R 1206 0805 0805 C256 CAPACITOR 2201 20 10V 0810 SMD C257 CAPACITOR 1001 6 3V C258 CAPACITOR 22uF 6 3V C259 CAPACITOR 2201 20 10V 0810 SMD C26 CAPACITOR 10nF 20 50V X7R 0805 C261 CAPACITOR 2201 20 10V 0810 SMD C262 CAPACITOR 680pF 20 63V NPO C263 CAPACITOR 220pF 5 50V NPO C264 CAPACITOR 100nF 20 25V X7R C265 CAPACITOR 100nF 20 25V X7R C266 CAPACITOR 100nF 20 25V X7R C267 CAPACITOR 100nF 20 25V X7R C268 CAPACITOR 100nF 20 25V X7R C269 CAPACITOR 100nF 20 25V X7R C270 CAPACITOR 100nF 20 25V X7R C271 CAPACITOR 100nF 20 25V X7R C272 CAPACITOR 100nF 20 25V X7R C273 CAPACITOR 100nF 20 25V X7R C274 CAPACITOR 100nF 20 25V X7R C275 CAPACITOR 100nF 20 25V X7R 8 6 Replacement Parts Main 1206 0805 0805 0805 0805 0805 0805 0805 0805 0805 0805 0805 0805 0805 Part Number 222286148103 532212613638 222286148103 532212613638 222286115109 532212613638 402230160221 222286115109 532212613638 222286115109 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 222286148
162. 06 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 12 0kohm 1 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 220 ohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 27 ohm 1 0 1W 100PPM 0805 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 Part Number 403100247020 403100222020 532211712499 532211712499 532211712499 532211712497 482205154701 482205154701 482205110109 532211712497 532211712497 403100200000 532211712498 532211712499 532211680448 532211680447 482205151204 532211711787 482205152204 532211712497 532211712505 403100233010 532211711787 482205110106 532211712505 532211712505 532211711788 532211712501 403100247030 532211680447 532211712505 482205110105 532211712501 532211712505 53
163. 06000002 403106000001 935271788125 935271788125 932220498682 532220990433 403106000010 403106000010 403106000010 403106000009 403106000011 932214746682 Replacement Parts Main Board Version B 8 25 Pos Description Part Number Pos Description Part Number U7 277 932214746682 052 IC CMOS 74LVC162245ADGG TSSOP48 403106000010 08 AMP LM358 x2 SMD 08 933965740685 053 IC CMOS 74LVC162245ADGG TSSOP48 403106000010 u8 AMP LM358 x2 SMD 08 482220960175 054 IC CMOS 74LVC162245ADGG TSSOP48 403106000010 09 IC ANALOG PLL 200MHz ADF4001BRU 932220404682 056 IC CMOS 74LVCO8AD 014 403106000009 U57 IC CMOS 74LVC1G02GV NOR SOT753 403106000011 NOTE The preceding parts lists for the two versions of the main PCB are both complete for the sake of simplicity Conse NOTE The two tables above are meant to pinpoint the parts that quently there is redundant information are unique to the respective version Consequently they are excerpts from the complete lists PariS to Verstongs Parts Common to Version A and Version B Pos Description Part Number NOTE 1 Only parts with changed quantities are shown NOTE 2 means that the part has been added B3 CRYSTAL 32kHz MC 406 242254301419 means that the part has been deleted R364 RESISTOR 22 kOhm 1 0 1W 100PPM 0805 403100222030 Changes 66 40 Version R367 RESISTOR 22 kOhm 1 0 1W 100PPM 0805 403100222030 9 R549 RESISTOR 1 kOhm 1 0 125W 1206 403100110020
164. 07 1 5K DB6 15K 47K 15UF 6 3V 4 Ad pee ADS C342 ADO Je 12VREF C336 R397 64 R42 cen 1 SH 12 409 JRE Pal 034 a 3 1 50 08 589 12VINT 1 BFT92 p U19A NotUsed 47 BFT92 47 Not Used M4100 341 100NF RF R405 22 ADC1061 U18B C370 6 035 R659 U134A 100NF gt OPA277 100NF C340 hy BC847B x 8 47 4 100NF 277 C338 R643 10 abr 12VINT 1 I 100p 2 2K one C346 R398 j Z e 6 gt prd 4 4 100p 100 ADG719 C347 5VINT 15UF 6 3V 162 1 12VINT B 12 1 t U132B U133B dis e 036 BLM21A1028 U23A 95 ADG719 ADG719 BLM21A102S a 20 01 R540 19 4 m 10 22 100n 081 19 AD3 123 R413 6 8u 16V VN DB2 18 R410 R657 DB3 ADS 1 gt 12VREF aos 82 22 9 ppa 18 05 7 3 BLM21A102S 100 TR VREF DB5 18 807 C350 L 6351 1 5K 4 DB6 ADS TP 4 RD DB7 Hip 356 R409 065 R417 C512 C353 3 SH DB8 12 4 3 565 DB9 s t BFT92 58 U134B U135B Not_Used 47 BFT92 47 Not Used M4100 C352 100NF Wr 98 ADG719 ADG719 R644 Rate Rea ADC1061 4 124 R660 U135A 100 axa gt 2 MM 8 1678 12 Nt 1 8645 100 22K C349 R414 a gt ZA 1000 100 06719 TRALED 2 BLM21A102S gt gt TRBLED 2 gt gt GATELED 2 8VINT 4 4 Lo
165. 0821 166 DES pio PG6 100 WEN USBDN Ajs x29 AFO 121 0820 164 DF19 PG R615 SCL USBPN H 0819 PI 4 DB18 162 ra PHo C4 4 gt set 5 R3 R667 I 116 162 PI6 PH1 TESTZ AF3 115 2 DB17 181 DF16 100 CLKOUT 1 AFA 0816 0615 pir ERS 65 C519 C518 EH LINREGN 100 0815 152 Bua 06 Not_Used Not_Used 5 ints 4 5 5812 150 0612 85 8 5 25 cSGPIB DB11 PH7 C5 8655 16002 TO 8 8 DB10 3 8VCPU USE JTAG J3 R664 x x 14 Dr 100 RE61 19 ross 10K 1979524 J d 146 95 LH79524 DB7 14 DF amp 100 DB6 14g 085 3 3VCPU PLL LOCK 3 3VCPU 085 139 R636 R628 6 PLL LOCK Comm T 138 D 4 7K 47K e DFZ 1 RB Lock C PELDU 082 Reap ease DFO 134 3 3VFPGA CSGPIBN CSGPIBN 3 x28 V 9 1 5 6 8 5VV gt C gt 5V0 LI X65 8 OEP gt RESGPIBN 8 127 10 FIFOALERT R423 R424 U56B R637 mg 5 3 3VFPGA _ gt gt 3 3VFPGA INTERRUPT 432 EMPTY 4 7K CSUSB 4 LV608 FAN FANCTRL 7 FIFOEMPTY 8 100 L17 DI 158 pry DONE 104 DONE CSGPIBN 5 spp 8889 STD OSC TRIM 6 CCLK ONE 107 1 INITN 1 5 6 7 8 3 3VD 3 3VDISP FROGN ONT 581 a gt R646 RETX DIN 1 SpartanliE 2 35 mE BLM21A102S 8 C36 RDN 8 22uF 6 3V US2B 5
166. 0A 99 SOT23 532213034337 C508 CAPACITOR 10nF 10 25V X7R 0402 403102040103 D12 DIODE 0 10A BAV99 SOT23 532213034337 C513 CAPACITOR 10nF 10 25V X7R 0402 403102040103 013 DIODE 0 10A BAV99 SOT23 532213034337 C514 CAPACITOR 10nF 10 25V X7R 0402 403102040103 D14 DIODE 0 10A BAT18 35V 1PF SOT23 532213032076 C515 CAPACITOR 10nF 10 25V X7R 0402 403102040103 D15 DIODE 0 10A BAT18 35V 1PF SOT23 532213032076 C516 CAPACITOR 10nF 10 25V X7R 0402 403102040103 017 DIODE 0 10A BAV99 SOT23 532213034337 C517 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 D18 DIODE 0 10A BAV99 SOT23 532213034337 C522 CAPACITOR 100nF 20 25V X7R 0805 532212613638 D19 DIODE 0 10A BAV99 SOT23 532213034337 C523 CAPACITOR 100nF 20 25V X7R 0805 532212613638 D20 DIODE 0 10A BAV99 SOT23 532213034337 C524 CAPACITOR 100nF 20 25V X7R 0805 532212613638 021 DIODE 0 10 BAT18 35V 1PF SOT23 532213032076 C525 CAPACITOR 10nF 20 50V X7R 0805 532212234098 D22 DIODE 0 10 BAT18 35V 1PF SOT23 532213032076 C526 CAPACITOR 10nF 20 50V X7R 0805 532212234098 D23 DIODE VARACTOR SMV1255 073 5 07 403105000001 C527 CAPACITOR 10nF 20 50V X7R 0805 532212234098 D24 DIODE VARACTOR SMV1255 073 5 07 403105000001 C528 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 532212410687 025 DIODE 0 10A BAV99 SOT23 933215370701 C529 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 532212410687 025 DIODE 0 10A BAV99 SOT23 532213034337 C530 CAPACITOR 6 80 uF 20 16V 6 0 3 2 MOLD 532212410687 D26 DIODE 0 10A BAV99 SOT23 532213034337 C531 CAPA
167. 0NF 100 I 100NF 100 100 100 100NF I gt NTN 5 A 3 3VMEM a bi kaa aaah 3889898889988888 5 9889999999999999 55 cate 95892255225522555 88 100NF 100NF 3 3VCPU COUNTER TANE 8 d Y 222222222222222222222222 2229 9 992999229222992288228222 won 8 G56555555555555555555555 6000 5666666656666666565666666665 999 U17B Ut gt gt 0 AM29LV640MH 56 LVC125 5 1 3 1 Schematic Diagrams 9 9 This page is intentionally left blank 9 10 Schematic Diagrams Input Amplifiers PCB 1 sheet 2 7
168. 10004 Item Figure 8 2 8 2 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 Mechanical Parts Description Solder lug Holder BNC Rear plate 90 ser Rear overlay 90 ser Connector BNC Screw MFT TT 3x8 Screw MFT 4x16 Solder lug Lock washer AZ4 3 ST FZ Spring washer M4 KBA4 3 Nut M4 Mains filter Fan 12VDC 40x40x15mm Screw MFX 3x22 Washer 3 2 ST FZ Nut M3 Grounding wire Display Keypad Front unit board complete Front overlay PM6690 Washer 3 2 ST FZ Cover assembly Screw MRT TT 3x8 Gasket display Part number 403110058390 403110065870 403110065890 403110066080 532226710004 482250211713 252220306037 403110058390 252262027007 482253080076 482250510825 403110066450 403110502850 403110503450 252261024004 482250510758 403110066460 403110065800 403110065980 403110066160 403110066060 252261024004 403110066440 482250211691 403110066120 Replacement Parts Mechanical Parts 8 3 Figure 8 2 Exploded view of chassis Figure 8 3 Rear panel 8 4 Replacement Parts Mechanical Parts C10 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109 C110 C111 C114 C115 C116 C117 C118 C119 C12 C120 C122 C123 C124 C125 C126 C127 C128 C129 C13 C130 C131 C132 C133 C134 C136 C137 C138 C139 C14 C140 C141 C143 C146 C147 C148 C149 C15 C150 C151 C152 C154 Main Board Version A Description Main board complete OCXO PM
169. 100NF INT gt 6 ADG719 BLM21A1028 100 2 2K L d 1 ADC1061 100NF C348 _ 125 _ pui BSE L cass 10 AP 1 56 5VA FAA ssvINT I ese T I BLM21A1028 gt ze 100p 100 gt INTREF 128 gt GATEOUT INVA 21 1025 gt TRALED gt TRBLED 5VMI gt GATELED 4 4 C12 cz gt C30 100NF mmm 2 2UF 6 3V gt 4100 mam 22UF 6 3V 1 SVAD SVAD 5VAD 5VAD I 4 1 4 1 OG nm 994 218 C364 99 U22B C367 U23B gt U44B L 2 58 C15 c32 L 1 1 ed C360 aras gt 26 ADC1061 pna gt p Wea gt 38 10 0368 ZE 0986 mmi5UF 6 3V ADC1061 0368 KM4100 100NF 6 1 KM4100 100NF mmm gt 2UF 6 3V T 100NF 4 100NF 4 Schematic Diagrams 9 13 This page is intentionally left blank 9 14 Schematic Diagrams Miscellaneous PCB 1 sheet 4 7 2 DONE 2 INITN 12 SCL 12 SDA 1 2 6 7 8 5VD 1 2 6 7 8 3 3VD
170. 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 470 OHM 1 0 1W 100PPM 0805 RESISTOR 470 OHM 1 0 1W 100PPM 0805 RESISTOR 470 OHM 1 0 1W 100PPM 0805 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 1 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 Part Number 482205110109 482205110121 532211712507 532211712
171. 103 225201471398 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 532212613643 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 222286148103 402230160221 402230160221 532212613643 202202900655 202202900654 222215364221 222286315681 402230160331 532212613638 222215364221 202202900655 202202900654 222215364221 222286148103 222215364221 222286315681 402230160331 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 Board Version A Pos C276 C278 C279 C28 C280 C281 C282 C283 C284 C285 C286 C287 C288 C289 C29 C290 C291 C292 C293 C294 C295 C296 C297 C298 C299 C3 C30 C300 C301 C302 C303 C304 C305 C306 C307 C308 C309 C31 C310 C311 C312 C313 C314 C315 C316 C317 C318 C319 C32 C320 C321 C322 C323 C324 C326 C327 C328 C329 C330 C331 C332 C333 C335 C337 Description CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAP
172. 11712497 403100200000 532211712497 532211712498 532211680448 482205154704 482205151204 532211711787 482205152204 532211712497 532211712505 532211712508 532211711787 482205110105 532211712505 532211712505 532213010682 532211711788 532211712501 532211712505 403100247030 482205154704 532211712505 482205110105 532211712501 532211711788 482205110121 482205110121 482205110121 482205110121 482205151501 532211712505 403100282090 403100268090 403100268090 403100247020 532211712505 532211712505 532211710968 482205110121 482205110121 482205110121 482205110121 482205151501 532211712498 482205151501 482205154704 532211712499 Pos Description Part Number Pos Description Part Number R256 RESISTOR 220 Ohm 1 0 1W 100PPM 0805 403100222010 R326 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R257 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 532211712498 R327 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R258 RESISTOR 120 kOhm 1 125W 100PPM 1206 482205151204 R328 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 8259 RESISTOR 27 Ohm 1 0 1W 100 0805 403100227090 R329 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R260 RESISTOR 470 kOhm 1 125W 100PPM 1206 482205154704 R331 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R261 RESISTOR 470 kOhm 1 125W 100PPM 1206 482205154704 R332 RESISTOR 39 kOhm 1 0 1W 100PPM 0805 403100239030 R262 RESISTOR 1 MOhm 1 0 1W 100 0805 403100210050 R333 RESISTOR 270 Ohm 1 0 1W 100
173. 12613638 532212613638 532212613638 532212613638 532212234098 Pos Description Part Number Pos Description Part Number C476 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C562 CAPACITOR 100pF 6 3V 202202900655 C477 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C563 CAPACITOR 100pF 6 3V 202202900655 C478 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C564 CAPACITOR 100pF 6 3V 202202900655 C479 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C565 CAPACITOR 22pF 5 50V NPO 0805 532212232658 C480 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C566 CAPACITOR 1nF 20 50V X7R 0805 532212234123 C481 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C567 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C483 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C568 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C484 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C569 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C486 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C570 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C487 CAPACITOR 22pF 5 50V NPO 0805 532212232658 C571 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C488 CAPACITOR 22uF 20 35V 0605 SMD 222215360229 C572 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C489 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C573 CAPACITOR 1nF 20 50V X7R 0805 532212234123 C490 CAPACITOR 22uF 20 35V 0605 SMD 222215360229 C575 CAPACITOR 100pF 6 3V 202202900655 C491 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C576 CAPACITOR 1nF 20 50V X7R 0805 532212
174. 13207707 242213207707 242213207707 242213207707 242213207707 242213207707 242213207707 242254943133 242254900035 242254943133 242254943133 242254943133 242253600772 242254900035 242254943133 242254900035 242253600772 242254900035 242254900035 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242253600772 242254943133 242253600773 242254943133 242253594048 242254943133 242254943133 242254943133 242254943133 242254943133 242253594048 242253594048 242254943133 242254943133 242254943133 Pos L42 L43 L44 L45 L46 L47 L48 L49 L5 L50 L51 L52 L53 L54 L55 L56 L57 L59 L6 L60 L61 L62 L63 L7 L8 L9 M10 M11 M12 M13 M14 M15 M16 M17 M18 M19 M2 M20 M3 M4 M5 M6 M7 M8 Description FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A
175. 14 EN GG mH C173 M STD OSC ON OFF ance 10K 5 REINA gt fn 174 442v0 277 R276 1 1 NOO 4 5 10N KE uie RSET FLD AN amp a ADF4001 100N sa 3 4 amp cus R277 5 1 s 1 100P C178 c179 C180 LVC00 R278 R279 TS 12V Out 47K PLL LOCK 22 22 PALE 2 2K 47 2 100NF R280 1 R281 M D23 2 1 5 SMV1255 073 RFb GND 1M 5 3 1K 10 MHZ CO 08 1 Kt 1 C181 E e PHASE LOCK LOP 109 SE SEE C183 R282 R283 185 LOAD OVEN 5 2 2UF 6 3V 47 47K R284 ut R285 iD X 10K 10K mi LTCB043 2 C186 M 1 68P 4 C187 A OPA277 1 k 470 47 i D24 R287 R568 3 Ga iii SMV1255 073 U4B 47 4 gt 100MHz 68 100K 6 47 L R289 p A LVC1604 22PF pul Look PLLLOCK 2 o gt 100K X5 xe R588 R290 R291 R292 I 1 Sak 5 2 STD OSC TRIM 1 Av m NOT USED 4 7K 4 7K 474 6188 10N 191 C193 C194 C195 oe COUNTER CIRCUIT e 100NF 100NF 100NF aa amp mM eu 202 100MHz RBLOCK OVENCTRL L5 OSC ON OFF USED U49A 205 1 RBCTRL I STD OSC ONF N is R296 R606 R608 204 10 5 0 STDCTRL 75 S R ON OFF c 433049 10MRB SIR CTRL 82 4 e NOT USED MINICOAX 3 100MHz 185 100M Not Used NOT USED 100 100 100 C487 0569 NOT USED 1604 RUBIDIUM ON OFF I m 1005
176. 15 The two SDRAMs are connected to form a 32 bit wide memory A Reset IC U116 monitors 3 3 VD 2 5 V and 1 8V The reset signal is active low and kept low for approximately 160 to 180 ms after the voltages are OK Measure at X33 The ramp up time for 3 3 VD is approximately 2 ms for 2 5 V approximately 4 ms and for 1 8 V approximately 3 ms The rising edge of the reset signal marks the start of the boot sequence All I Os on the processor are set high with a weak high ohmic pull up The fan will run at full speed R492 The memory controller in the processor is set up The proces sor reads in the Flash PROM for the initialization data at cer tain addresses Check CEO at U13 pin 16 When the data is found the processor loads it inside the processor IC The I Os will be set up The fan will stop running because the pin is set low The 32 kHz oscillator will start running check at R357 and an internal PLL will generate 30 MHz internal and exter nal clock check X29 After the initialization the processor starts executing code from address 0 in the Flash PROM The program copies the code from the Flash PROM to the SDRAM When done it starts executing from the SDRAM Check SDCEO at U13 26 The Flash is not used for executing code after this only occa sionally for storing data that should be non volatile See Figure 6 21 to Figure 6 23 for a survey of a typical instru ment startup The LCD is switched on The LCD controller i
177. 18 EB R537 LV 1 2567 3 3VD D gt YYYN gt 3 3VEC 5 a BLM21A1028 RESET R588 ISP1181B L36 120 3 3VIF LAAN gt 3 3VIF 21 1025 220UF 10V 2 CSUSBN 5VPO gt gt 8 3VIF DS _ gt 33 bl gt 6 n 0 4 1 1 gt 40_MHz 010 15 2 00 15 x20 2 WRN 2 RDN 2 CSGPIBN C432 C433 6 RESGPIBN 33pF 22PF 2 DIRGPIB EXTREFON 40MHZ J a 3 3VRI 2 4 3 3VRI me 4 1 CLK 1M R544 0435 22UF 35V 0386 R545 R546 a 100 22UF 6 3V J25A 1 5K 15K ix R547 XI X19 R548 4 U37A 9 1 a 470 C438 100K _C gt 0001 126 R LVC74A H x pme 04 R549 Ed Ust 52 MODE 2 4 DIO4 EXTERNAL 100NF 26 102 91 13 REFERENCE K R551 L37 2 02 ag 14 Do IN t 103 rear 100NF 100NF 3 3K 4 7UH Rosa T BURST_RDN 104 rH DIO7 BNC COAX LMHG624 B6 C443 C44 R554 1 SE 33 pack 195 77 R553 2 106 22K ess IL I 1 4 p2 e 14 ABUS 107 4 GPIB 57LE a T 10MHZ 47 L 52 8805 168 J25B 3 10PF 2 2PF 100 D53 470 1700 7 55 og REN 10 1 BATS4S R557 R558 PF CS REN 79 REN 15 22K L38 R560 cig WR IF IFC 26 NOTUSED T 63 RD 51 8 NDAC ATU 87 RESET NRFD 82 1 NRFD c448 DAV 84 8 DAV C449 C450 TPE 0 ao GPIB
178. 1873 RIES H 1 Rss 229 Rus E Ri SEREK gt 22 5149 6234 E gt R34 J SEREK SE SE S K4 is ol2l 2 u G 4 C SE ES Read 101 4 7 C35 159 Us 1 d IC 513 GND Lea 9413 C350 dir Rele Skoro 635 zl AS C339 5 2 Xi e E m J 8 RS LC pas os 2395228 fS C161 334 x4 1 HJ R399 S E X39 ue rz p us 2 LJ 8 2 5400 6339 e gt 3948394 40 7 R406 0348 05892 M7 19 1 Jio 20 e Figure 6 60 Test points for troubleshooting the input amplifiers 200mV 40045 Chil X 0 00V Figure 6 61 Oscillogram showing the signal at the interconnection of R140 R212 and R141 R213 Troubleshooting 6 37 SS M R AL O SE WREN 200mV M 400115 A Chr X 0 00 V Figure 6 62 Oscillogram showing the signal at the interconnection of R156 R229 and C109 C140 Ww U L v SATAM TR TB ZE MA ADT ME DEN TINI TUNI LAT NE NT RA UNT GT UNIT ST R WET TRE R
179. 2 x50 R449 V 1K 10K R593 10 10 10 10 10 10 10 10 1K R505 R599 R603 R461 R462 R463 R464 R465 4 R453 C387 2 OFFCTRL 1 4K t I t 1 22UF 35V U124 T 47 10 10 10 10 10 10 10 10 21 4 R460 __ c388 x42 X 1 gt 7 5 R600 T 7 R468 R469 R470 R471 3 3K 22UF 35V atk R466 I 1 t 1 poe NREG a CLK L6 Q47 058 10 10 10 10 10 10 10 10 OUT ms gt 5 2VA 56 a BC847B 868478 R597 R601 R605 R473 R474 8475 8476 R477 LMAS R472 1K _ _ I 1 LVC74A ib 10 10 10 10 10 10 10 10 Xt 47 X51 Mo 5VU 4 gt 12 1 468 Z 1468 1 R479 R450 R451 R446 pe 1K 330 4 2 EV gt STBYLED 2 J 470 4 U123 T R447 0385 21 4 ON OFF GND 22K mm 220 cis 89 uzec a 22UE SEV ADJ H Ga 1 T 100NF 5 5 LVC74A IN REG I 15VU INTAB OUT H 4 22K m LM29915 880 V XI U127 ae Gr IN OUT IN 6 5VD 12568 cn GATE GND 12 568 1456 VC gt MIC2505 gt POWERON 2 gt POWERON X38 5vU sen Y V6 6 1456 488 R570 R571 1 R572 R573 R574 FT 22UF 35V 0489 100 100 100 100 NOT USED m n R579 R575 R576 R577 R578 T L gt 5V 2 15K 100 100 100 6 X45 FROM AQ DC L5 x X39 Reed C397 POER 4 1 M M 100UF 6 3V U128 gt SUPPLY 45V
180. 2 for a typical timing diagram Another bus from the microprocessor is the SPI bus It is a se rial bus with one data signal and one clock signal that are com mon to all ICs connected to the bus A separate load signal for each IC controls the loading of the data Connected to the SPI bus are See Figure 6 93 to Figure 6 96 The 100 MHz PLL IC U9 SPI bus is used only for initialization after power on The optional oven oscillator 05 The SPI bus is used for initialization after power on and during a timebase calibration The trigger levels IC 046 The last bus is the bus It is also a serial bus with two sig nals SDA and SCL Each connected IC has a unique address The message sent includes the address and only the addressed IC will listen to the message and respond by sending an ac knowledge to the master Then it will react accordingly Introduction to the Bus The bus is a 2 line serial bus for the communication be tween the ICs The microprocessor controls the communica tion by means of the clock line SCL One or more slaves can read or write on the data line SDA 6 50 Troubleshooting The SDA and SCL are high at standby All ICs connected to the bus can sink SDA to low as they are interconnected via open collector outputs The microprocessor starts and stops the communication by sending terms of start and stop 222205 C am A START STOP Figure 6
181. 20 20 6 3V 3 2X1 6 MOLD 532212410685 C261 CAPACITOR 220yF 20 10V 0810 SMD 222215364221 C320 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C262 CAPACITOR 680pF 20 63V NPO 1206 482212612075 C321 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C263 CAPACITOR 220pF 5 50V NPO 0805 482212233575 C322 CAPACITOR 100pF 5 50V NPO 0805 222286115101 C264 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C323 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C265 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C324 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C266 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C326 CAPACITOR 68pF 1 50V NPO 0805 222286118689 C267 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C327 CAPACITOR 100pF 5 50V NPO 0805 222286115101 C268 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C328 CAPACITOR 100pF 5 50V NPO 0805 222286115101 C269 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C329 CAPACITOR 100pF 596 50V NPO 0805 222286115101 C27 CAPACITOR 27pF 5 50V NPO 0805 222286115279 C33 CAPACITOR 27pF 5 50V NPO 0805 222286115279 C270 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C330 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C271 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C331 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C272 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C332 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C273 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C333 CAPACITOR 68pF 1 50V NPO 0805 222286118689 C274 CAPACITOR 100nF 20 25V
182. 205151001 R540 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 532211712507 R609 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R543 RESISTOR 1 MOhm 1 0 1W 100 0805 403100210050 R610 RESISTOR 1 2 MOhm 1 0 125W 1206 403100112050 R544 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R611 RESISTOR 1 2 MOhm 1 0 125W 1206 403100112050 R545 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 8612 RESISTOR 1 1 0 1W 100PPM 0805 532211712498 R546 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 R613 RESISTOR 1 1 0 1W 100 0805 532211712498 R547 RESISTOR 470 Ohm 1 125W 100PPM 1206 482205154701 R614 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 532211712497 R548 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 532211712501 R615 RESISTOR 100 Ohm 196 0 1W 100PPM 0805 532211712497 R549 RESISTOR 1kOhm 196 0 1W 100PPM 0805 532211712498 R616 RESISTOR 820 Ohm 1 125W 100PPM 1206 532211682264 R551 RESISTOR 3 3 kOhm 1 0 1W 100 0805 403100233020 R617 RESISTOR 6 8 kOhm 1 0 1W 100 0805 403100268020 R552 RESISTOR 1 1 0 1W 100PPM 0805 532211712498 R618 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 532211712499 R553 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R619 RESISTOR 1 1 0 1W 100PPM 0805 532211712498 R554 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 532211712505 R620 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 R555 RESISTOR 470 Ohm 1 125W 100 1206 482205154701 R621 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 482205110121 8557
183. 2211712505 532211711788 482205110121 482205110121 482205110121 482205110121 482205151501 532211712505 403100268090 403100268090 403100247020 532211712505 532211712505 532211710968 482205110121 482205110121 482205110121 482205110121 482205151501 532211712498 482205151501 532211680447 532211712499 403100222010 532211712498 403100227090 532211680447 532211680447 532211712498 403100210050 Replacement Parts Main Board Version B 8 21 Pos R192 R193 R194 R195 R196 R197 R198 R199 R2 R20 R200 R201 R202 R203 R205 R206 R207 R208 R209 R21 R210 R211 R212 R213 R214 R215 R216 R217 R218 R219 R22 R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R23 R230 R231 R232 R233 R234 R235 R236 R237 R238 R239 R240 R241 R242 R243 R244 R245 R246 R247 R248 R249 R250 R251 8 22 Description RESISTOR 000 ohm 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 27 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 POTENTIOMETER 100kohm 3304X 1 104 POTENTIOMETER 2 KOHM 25 4mm RESISTOR 15 KOHM 1 0 1W 100 0805 RESISTOR 47 1 0 1W 100 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 180kohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 100 o
184. 22215364221 222286148102 532212232531 532212613638 222215360478 222215360221 222286148103 222215360478 222215364221 222215360478 222215364221 532212613638 Pos C411 C412 C414 C415 C416 C417 C421 C422 C424 C427 C428 C429 C430 C431 C432 C433 C434 C435 C436 C437 C438 C439 C440 C441 C442 C443 C444 C445 C446 C447 C448 C449 C450 C451 C452 C453 C462 C463 C464 C465 C466 C467 C468 C469 C470 C471 C472 C473 C474 C475 C476 C477 C478 C479 C480 C481 C483 C484 C486 C487 C488 C489 C490 C491 Description CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 10pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 82pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220uF 20 10V 0810 SMD CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10pF 5 50V NPO 0805 CAPACITOR TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 2 2pF 0 25pF 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1
185. 234123 C492 CAPACITOR 22uF 20 35V 0605 SMD 222215360229 C577 CAPACITOR 1nF 20 50V X7R 0805 532212234123 C493 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C578 CAPACITOR 1 20 50V X7R 0805 532212234123 C494 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C579 CAPACITOR 1nF 20 50V X7R 0805 532212234123 C496 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 532212550689 C580 CAPACITOR 1nF 20 50V X7R 0805 532212234123 C497 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 532212550689 C581 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C498 CAPACITOR 22pF 5 50V NPO 0805 532212232658 C582 CAPACITOR 1 20 50V 0805 532212234123 C499 CAPACITOR 22uF 6 3V 202202900654 C6 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 225201471158 C5 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C7 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 225201471158 C500 CAPACITOR 1001 6 3V 202202900655 C8 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 225201471158 C501 CAPACITOR 470pF 10 50V X7R 0402 403102040471 C9 CAPACITOR 1 5pF 0 25pF 500V NPO 1206 225201471158 C503 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C97 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C504 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C98 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C505 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C99 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 225201471398 C506 CAPACITOR 470pF 1096 50V X7R 0402 403102040471 D10 DIODE 0 10A BAV99 SOT23 532213034337 C507 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 532212410687 011 DIODE 0 1
186. 247090 532211712505 403100210050 532211712498 532211712505 403100247030 532211712499 532211712499 482205154701 532211712505 532211712501 532211712501 403100247020 403100247020 403100247020 532211712499 403100247030 482205151001 482205151001 532211712499 403100247030 532211712497 532211712497 532211712497 532211712497 532211712505 403100268090 403100268090 532211712507 532211712505 532211712505 532211712505 532211712497 532211712497 532211712505 532211712505 532211712505 532211712499 403100239030 R323 R324 R325 R326 R327 R328 R329 R331 R332 R333 R334 R335 R337 R338 R339 R340 R341 R342 R343 R344 R346 R347 R348 R349 R350 R351 R352 R353 R354 R355 R358 R359 R360 R361 R362 R363 R372 R373 R374 R375 R376 R377 R378 R379 R380 R381 R382 R383 R384 R385 R386 R387 R389 R390 R391 R392 R393 R394 R395 R396 R397 R398 R399 R4 Description RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 39 KOHM 1 0 1W 100PPM 0805 RESISTOR 270 OHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 1W 100
187. 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB1 10 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB1 10 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 39pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 Part Number 403110066470 403110065330 403110065340 242254301419 403110056520 403110056540 403110056530 222286115479 532212613638 222286148103 532212613638 532212613638 532212613638 532212410685 222286148103 202280000247 532212613638 532212613638 222286115479 532212614081 532212550306 402230160221 225201471398 532212550306 225201471398 222286115399 532212613638 532212613638 402230160331 532212614081 532212410685 222286148103 222286148103 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 225201471398 532212613638 532212613638 532212410685 222286148103 202280000247 532212613638 532212613638 532212613638 222286115479 532212614081 532212550306 402230160221 225201471398 532212550306 225201471398 532212613638 222286115399 532212613638 402230160331 532212614081 Pos C155 C156 C157 C158 C159 C16 C160 C161 C162 C163 C164 C165 C166 C168 C169 C17 C170 C171 C172 C173 C174 C17
188. 3 242254943133 8 20 Replacement Parts Main Board Version B Pos L42 L43 L44 L45 L46 L47 L48 L49 L5 L50 L51 L52 L53 L54 L55 L56 L57 L59 16 L60 L61 L62 L63 L66 L67 L7 L8 L9 M10 M11 M12 M13 M14 M15 M16 M17 M18 M19 M2 M20 M3 M4 5 6 Description FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2 R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2 R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2 R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1Kohm 0 2 R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2 R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 1uH 20 B82412 A1102 M FILTER EMI BLM41PF800S FILTER EMI BLM41PF800S FILTER EMI BLM21A1
189. 30 Re31 2 amp A9 09 010 3 4 D3 027 41 lt gt DF27 Dii 4 lt gt 10K 40K 10K 10K 7 A10 010 715 011 23 1103 44 04 D26 40 bes 162 9 1826 510 40 1 i 9 _ DF10 8 12 11 D11 UN 012 5 pe I 46 05 025 38 145 185 LLL 9625 D9 38 145 185 11 1 1 E R B AI CRI A13 pia THB A7 AB vos 48 57 DZE 17 2 92 73 iar 17 12108 1 JTAG 10 10K p 014 AT 20 0 D Hi 819 16 Ais 015 me AB 10 AS vos 36 53 48 GET 4 GET gt 020 31 8 4 ms A1GIPCO Pkopte ps A A 109 510 1 DIRI R6 A17 PC1 PK1 D17 AT Dit 18 2 PK2 D18 AZ A11 1011 i Diz LVC162245A LVC162245A U25A R585 SPICLK 2 chia 18 A19 PC3 PK3 D19 H 2 1012 TRA Seek _ 4 pod 5 A20 PC4 PK4 D20 52 AR 4 A8 013 45 Du U54B U53B 4 TRALED 24 SPIDATA lt ZSPIDATA 16 2 PK5 D21 HB 557 As 1014 515 023 DF23 07 a6 DF7 8VD 470 SPIOVEN S SPIOVEN 6 2 R 1016 6240 280 2A0 280 HCT126 mE 22 6 PK6 D22 023 A16 _ g 415 022 14 22 D6 _35 14 DFS TEK 23 84 N A16 35 2 281 2M 281 4 BEEN SPILL 6 A23IPC7 PK7 D23 LS D24 17 19 521 6 DF21 05 6 _DF5 LOAD TRGLYLA LOAD TRGLVLA 1 PN2 D24 p11 025 18 18 417 D20 32 2A2 282 47 DF20 D4 32 2A2 282 47 DF4 mes LOAD TRGLVL B PN3 D25 D26 219 aig 19 39 lt gt 2821 19 005 D3 2 gt 283 19 R586 2x10 SMD P
190. 32211712497 U15 IC SRAM K4S281632D 932220429682 R600 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 IC SRAM 452816320 932220429682 R601 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 U17 Am29LV640MH 932220405682 Replacement Parts Main Board Version A 8 13 Pos U18 U19 U2 U20 U21 U22 U23 U24 U26 U28 U29 U3 U30 031 032 033 034 035 037 038 039 04 040 Description IC OPAMP OPA277 IC OPAMP OPA277 IC OPAMP LMC6081 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OPAMP OPA277 IC OPAMP OPA277 IC OPAMP OPA277 IC CMOS 74LVC74AD IC COMP ADCMP565BP IC OP AMP LM358 x2 SMD 508 IC OPAMP LMH6624 IC CMOS 74LVC74AD IC CMOS 74ALVCOO IC DIG BUS ISP1181B IC OP AMP LM358 x2 SMD 508 IC DIG BUS TNT4882 IC CMOS TRANSL3 5V 74LVC4245AD IC DIG TEMP SENSOR LM75 IC CMOS 74ALVCOO IC DIG BUS I2C PCA9555PW Figure 8 4 Display assembly 8 14 Replacement Parts Front Unit Part Number 932214746682 932214746682 932220497682 932218755682 932218755682 932218755682 932218755682 932214746682 932214746682 932214746682 935260734701 932220403682 532220982941 932220398682 935260734701 932220496682 935271360701 532220982941 932220397682 935260749701 932212511682 932220496682 935269569701 Pos U41 U42 U43 U44 U45 U46 U47 U48 US 050 06 07 08 09 Description IC C
191. 32211712502 532211712497 482205154701 532211712499 532211712499 532211712499 532211712497 532211712499 Pos R669 01 011 0116 0118 012 0122 0123 0124 0126 0127 0128 0129 013 0130 0131 0132 0133 0134 0135 015 016 017 018 019 02 020 021 022 023 024 025 026 028 029 U3 U30 u31 u32 U33 U34 U35 U35 U37 U38 U39 U4 U40 U41 U42 U43 U44 U45 U46 U47 U48 05 050 052 053 054 056 057 06 Description RESISTOR 22 ohm 1 0 1W 100PPM 0805 LMC6081 IC FPGA IC ANA MAX6355TWUT T IC REG MAX1927REUB IC DIG ECLIPS 10 104 IC REF 2 5V LT1009CD 2 5 2 5VA0 2 15ppm IC REG LM2991S IC REG LM2991S IC REG LP2951 IC SWITCH MIC2505 1BM IC ANA SMPS CTR LTC3412 IC REG LM2940CS 12 IC CPU LH79524 IC REG LM2940CS 12 IC COMP MAX961 SO8 4 5ns IC ANA ADG719 SPDT SWITCH MSOP 8 IC ANA ADG719 SPDT SWITCH MSOP 8 IC ANA ADG719 SPDT SWITCH MSOP 8 IC ANA ADG719 SPDT SWITCH MSOP 8 IC SRAM K4S281632D IC SRAM K4S281632D IC PROM Am29LV640MH 277 277 LMC6081 IC OMV ADC 10BIT ADC1061C1WM 5020 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OMV ADC 10BIT ADC1061C1WM SO20 IC OMV ADC 10BIT ADC1061C1WM SO20 277 5 74HCT126D SMD 5014 277 277 IC CMOS 74LVC74AD ADCMP565BP IC OP AMP 1 358 x2 SMD 508 LMH6624 IC CMOS 74LVC74A
192. 33347730701 482213060511 482213060686 933347730701 532213060845 532213060845 933347730701 532213060845 532213060845 532213060845 532213060845 532213060845 532213060845 482213060511 482213060511 532213062639 532213062639 532213060647 482213060511 532213062639 934002210701 934002210701 532213040781 532213060845 933917180115 482213060511 933347730701 532213060647 933347730701 933347730701 933347730701 933347740701 532213060647 482213060686 403100247020 Replacement Parts Main Board Version A 8 9 Pos R10 R11 R12 R13 R132 R133 R134 R135 R136 R137 R138 R139 R14 R140 R141 R142 R143 R144 R145 R146 R147 R148 R149 R150 R151 R153 R154 R155 R156 R157 R158 R159 R16 R160 R161 R162 R163 R164 R165 R166 R167 R168 R169 R170 R171 R172 R173 R174 R175 R176 R177 R178 R179 R180 R181 R182 R183 R184 R185 R187 R188 R189 R190 R191 8 10 Description RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 000 Ohm 0 1W 100 0805 RESISTOR 1kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 125W 100PPM 1206 RESISTOR
193. 3VA 5 I Y Y usc U12F e A aa LM358 U12C A 3 3VA 3 3VA 888 27 x 1 Eu fu 888 SSV R351 IC BLM21A1028 f BuNztatoas NOTUSED 98 145 5VA 10E104 LM358 aA 12VA u L BLM21A1028 BIAIS gt gt 1457 12VA 10 T Wi Gi MI 4 uss C215 50 C217 C218 C219 C220 L C222 U47B 28 L C495 BLM21A102S 5 2L lum L czes 6 LTC8043 100NF avco 26 100NF 7 100NF 10PF 10 55 10 10 85 LVC1G04 NOTUSED T 25 NOT USED 1604 gt gt OPA277 10N _ E 100NF 1478 A2VA 4 gli 1 57 gt gt 52 Lp 12VA 5 3 2 1 Schematic Diagrams 9 17 This page is intentionally left blank 9 18 Schematic Diagrams Supply Voltages PCB 1 sheet 6 7
194. 4 ADCDATAS cst 82 100p 100 ADG719 ABE ADCDATAG RDT 36 ADCDATA7 R517 ADCDATAB ERRP2 72 330 41 ADCDATA9 22 40 8 ADCDATA10 RES2 HP R519 ADCDATA11 SH2 86 Leo ADT 330 82 12VINT R520 73 BLM21A102S U21A AS ans 54 2 osas 0525 zii m 9522 Roza 19 2 R521 RES3 G8u 16V 10 1 2 2K 8 VI DB2 18 5557 Ab 330 TMS SH3 R384 R652 R391 17 202 53 38 4 7K 82 4 22 1 9 vmgr 16 05 TDI RD3 7 DBS a Razz 1 5K U43A WEEE 586 14 07 y a Apo u 4 4 RD HAD a 010 C334 R385 Q63 R389 C510 1 cam 3 SH 088 ADT 330 Hun je 4 4 4 5 58 089 11 u12 II 86192 1 22 urs Not_Used 47 BFT92 47 Not Used KM4100 C330 100NF WT TRIGALED 191 R390 R640 18 U15 TRIGBLED 182 400 22K 1 ADC1061 3 U16 GATELED 193 R658 U133A 100NF uis 157 T j 1 amp urs R641 10 zia _ C328 C333 C329 100p 68 386 E 9 SpartanllE 2 gt 1 1000 100 ADG719 12VREF R392 U18A ah R393 L 1 VREF L I T 6 M 032 A r 12VINT 2 47 RZE X 033 BLM21A102S U22A gt C337 86513 0 GONE OESTE 10PF 6526 R399 osaa R539 080 ADZ 100NF R395 C520 10n pao 100n 12473 mE 6 8u 16V k VIN DB2 4 gt R396 R404 R656 DB3 AD5 33K 4 7K 82 gt VREF 16 508 L4 A R394 R400 C339 VREF DB5 18 8
195. 4 gt 1 8 0812 FIFODATAS 145 F4 F26 0811 4 Dio 146 Fa 43 D0 58 o 4 3UH DB13 FIFODATA4 F3 F27 DB10 DS 4 D 1 gt 3 3VCPU U118 u BLMATPBDOS 015 DB14 FIFODATA3 442 F28 4 DE 1215 9 148 F2 ge DE BLM41P800S 9 in REG ix C258 C250 DB15 FIFODATA2 49 FT F29 DB8 27 D7 C261 LM R372 WERODUF 6 3V 220UF 10V az FIFODATA FO F30 _ De 6 amp Sow 10 RESET FIFODATAO F31 4 D5 220UF 10V 4 ION BESK 68K 1 085 49 5 soo M Vine 24 455 DIN FIFOCLK 1 106 CL DB4 5 D3 C262 C263 o 106 FIFOWR 425 EH FWR DB3 Hi7 T 680PF 220PF MAX1927 PROGRAM FIFOALERT T FFIQ 2 24 01 15678 5V0 gt 1 1 a 081 Si C264 GET INTERRUPT 9 4071 ROFPGA 55 3 3VCPU DONE INITCLK 535 NT 31 INITDATA pour H 7520 C268 C265 C266 C267 100NF 100NF 1 400NF 1 400NF 18 57 SPARTANIIE 4 t gt D 0 15 8 C269 C271 C272 C273 C274 C278 C279 C280 C281 C285 case C288 gt 00 19 100NF 100NF 100NF T 100NF 100NF 100NF 100 100NF T 100 100NF 100NF 100NF 100 100NF I I I I E a0 T 10 0 4 C289 C290 C201 C202 204 C297 C208 1 C299 C300 0301 0302 C306 C307 C308 C309 gt DONE 5 100NF 100NF 100NF 100NF 400NF 100 100NF 100NF 100NF 10
196. 42201520096 242201520096 242201520096 242201520096 242201520096 Pos M9 Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q2 Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q3 Q30 Q31 Q32 Q33 Q34 Q35 Q36 Q37 Q38 Q39 Q4 Q40 Q41 Q42 Q43 Q44 Q45 Q46 Q47 Q48 Q49 Q5 Q50 Q51 Q53 Q54 Q55 Q56 Q57 Q58 Q59 Q6 Q63 Q64 Q65 Q7 Q8 99 R1 Description SHIELD CLIP SMD TRANSISTOR BF513 03A20V SOT23 TRANSI HF SMD 35 12V 50123 TRANSISTOR 25 BFR92A 20V 50123 TRANSISTOR BFT92 25 15V SOT23 TRANSISTOR 25 MA BFR92A 20V 50723 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR BFT93 35MA 12V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR 517 05A 15V SOT23 TRANSISTOR SMD BFR93A 35mA 12V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BSR12 0 1A 15V 50123 TRANSISTOR BSR12 0 1A 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 25 MA BFR92A 20V 50723 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TR
197. 44 R445 R446 R447 R448 R449 R450 R451 R452 R453 R454 R455 R456 R457 R458 R459 R460 R461 R462 R463 R464 R465 R466 R467 R468 R469 R470 R471 R472 R473 Description RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 82 OHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 82 OHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 000 ohm 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RE
198. 47 Not Used jj NT 100 2 2K Rese ADC1061 m U133A SPARTANIIE T a 100 R641 ma 21 1 VREF gt soon 22K L C333 C329 R386 10 L I L IL gt 12VREF T R392 18 1 1 3008 540 06719 OPA277 p 032 gt BC847B x eg 161 4 a Pa de SONT R395 L n 1 I M BLM21A1028 22 1 33K C529 9506 I R399 r C339 6 8u 16V m 22K R400 R396 R656 e 47K 15UF 6 3V 4 7K 82 12VREF Je oe Rese V MM4100 277 ped 4 gt Not_Used R397 R402 C511 4 A2VINT H m TP EM al T R405 Q35 Lo REF 1 i T 82 INT U18B m BC847B MER mas 03 peaz Not U ic E L4 100 INT MECZ 100 22K ADC1061 usA 100 i Ay L 12VINT R643 R407 gt 100p pee R308 241 10K 4 C347 1 T 15UF 6 3V E 100p 100 5VINT L62 I g 15607 12VA a HINT ag I 986 r BLM21A102S U23A ACZ C527 C524 22 20435 c530 LL R411 100 681 19 6 8u 16V gt L 2 2K 8 03 gt gt 12VREF 2K R657 Eres BLM21A1028 100 M408 82 R540 vrer 26505 474 b VREF 085 H SAD Te 1 5K e DB6 ADB 1 Not_Used R409 965 C512 LA C353 4 RD DB7 13499 B yw i BSH apio 5 4 H al 4 5 DB9 124 U45A C352 R3 Ut34B ISEB 1678 VI gt gt 2 R416 C356 R644 BFT92 47 Not Used
199. 470 kOhm 1 125W 100PPM 1206 RESISTOR 120 kOhm 1 125W 100PPM 1206 RESISTOR 680 kOhm 1 125W 100PPM 1206 RESISTOR 220 kOhm 1 125W 100PPM 1206 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 680 kOhm 1 125W 100PPM 1206 RESISTOR 10 MOhm 10 0 25W RC 01 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 3 30 Ohm 1 125W 100PPM 1206 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 kOhm 1 0 1W 100PPM 0805 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 00 MOhm 1 0 125W 100PPM 1206 RESISTOR 100 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 3 30 Ohm 1 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 82 Ohm 1 0 1W 100PPM 0805 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 RESISTOR 68 Ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 12 0 kOhm 1 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 120 Ohm 1 0 125W 100PPM 1206 RESISTOR 150 Ohm 1 0 125W 100PP
200. 48103 222286148103 222286148103 532212613638 222286148103 225201471398 532212613638 222286148103 222286148103 532212410687 Replacement Parts Main Board Version A 8 5 Pos Description C214 CAPACITOR 10nF 20 50V X7R C215 CAPACITOR 100nF 20 25V X7R C216 CAPACITOR 10nF 20 50V X7R C217 CAPACITOR 100nF 20 25V X7R 0805 0805 0805 0805 C218 CAPACITOR 10pF 5 50V NPO 0805 C219 CAPACITOR 100nF 20 25V X7R 0805 C22 CAPACITOR 27pF 5 50V NPO 0805 C220 CAPACITOR 10pF 5 50V NPO 0805 C221 CAPACITOR 100nF 20 25V X7R 0805 C222 CAPACITOR 10pF 5 50V NPO 0805 C223 CAPACITOR 10nF 20 50V X7R C224 CAPACITOR 10nF 20 50V X7R C225 CAPACITOR 10nF 20 50V X7R C226 CAPACITOR 10nF 20 50V X7R C227 CAPACITOR 10nF 20 50V X7R C228 CAPACITOR 10nF 20 50V X7R C229 CAPACITOR 10nF 20 50V X7R C23 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 C230 CAPACITOR 10nF 20 50V X7R C231 CAPACITOR 10nF 20 50V X7R C232 CAPACITOR 10nF 20 50V X7R C235 CAPACITOR 10nF 20 50V X7R C236 CAPACITOR 10nF 20 50V X7R C237 CAPACITOR 10nF 20 50V X7R C238 CAPACITOR 10nF 20 50V X7R C239 CAPACITOR 10nF 20 50V X7R C24 CAPACITOR 10pF 5 500V NPO C240 CAPACITOR 10nF 20 50V X7R C241 CAPACITOR 10nF 20 50V X7R C242 CAPACITOR 10nF 20 50V X7R C243 CAPACITOR 10nF 20 50V X7R C244 CAPACITOR 10nF 20 50V X7R C245 CAPACITOR 10nF 20 50V X7R C246 CAPACITOR 10nF 20 50V X7R C247 CAPACITOR 10nF 20 50V X7R 0805 0805 0805 0805 0805 0805 0805 0805 08
201. 5 C176 C177 C178 C179 C180 C181 C182 C183 C184 C185 C186 C187 C188 C189 C19 C190 C191 C192 C193 C194 C195 C197 C2 C20 C201 C202 C203 C204 C205 C206 C207 C208 C209 C21 C210 C211 C212 C213 Description CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 pF 20 6 3V 3 2X1 6 MOLD CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100pF 596 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 15pF 5 50V NPO 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPAC
202. 5 R496 R497 R498 R499 R500 R501 R502 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 R517 R518 R519 R520 R521 R522 R523 R524 R525 R526 R527 R528 R529 R530 R531 R532 Description RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 RESISTOR 220 Ohm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 3 3 kOhm 1 0 1W 100PPM 0805 RESISTOR 3 3 kOhm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 1kOhm 1 0 1W 100PPM 0805 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 15 kOhm 1 0 1W 100PPM 0805 RESISTOR 330 kOhm 1 0 1W 100PPM 0805 RESISTOR 150 kOhm 1 0 1W 100PPM 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 kOhm 1 0 1W 100 0805 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 RESISTOR 33 kOhm 1 0 1W 100PPM 0805 RESISTOR 10kOhm 1 0 1W 100PPM 0805 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESIS
203. 5 RESISTOR 150 Ohm 1 0 125W 100 1206 482205151501 0123 LM2991S 932220425682 R586 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 482205151501 0124 LM2991S 932220425682 R587 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 482205151501 0126 LP2951 932207501682 R589 RESISTOR 100 kOhm 1 0 1W 100 0805 532211712501 0127 IC SWITCH MIC2505 1BM 932220437682 R590 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 482205151501 0128 SMPS CTR LTC3412 932220430682 R591 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 482205151501 0129 LM2940CS 12 932211044682 R592 RESISTOR 1kOhm 1 0 1W 100 0805 532211712498 U13 TA7S20 60QC 932220406682 R593 RESISTOR 1kOhm 1 0 1W 100PPM 0805 532211712498 0130 LM2940CS 12 932211044682 R594 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 0131 MAX961 SO8 4 5ns 932219434682 R595 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 0132 ADG719 SPDT SWITCH MSOP 8 403106000008 R596 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 0133 ADG719 SPDT SWITCH MSOP 8 403106000008 R597 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 0134 ADG719 SPDT SWITCH MSOP 8 403106000008 R598 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 0135 ADG719 SPDT SWITCH MSOP 8 403106000008 R599 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 482205110109 U14 5 SN74LVC125AD 932220193682 R6 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 5
204. 507 532211712499 403100210050 532211712497 403100215020 403100215020 482205154701 403100291030 482205154701 403100233020 532211712498 403100222020 532211712505 482205154701 403100215090 403100222020 532211712505 532211712501 403100247020 532211712499 532211712499 403100233010 403100233010 532211712497 532211712497 532211712505 403100215010 482205151001 482205151001 482205151001 482205151001 482205151001 482205151001 482205151001 482205151001 403100215020 403100233020 532211712505 532211712499 532211712505 532211712505 403100247010 403100247010 403100247010 532211712501 403100215010 403100215010 532211712498 532211712498 482205110109 482205110109 482205110109 482205110109 482205110109 482205110109 532211712497 482205110109 482205110109 482205110109 482205110109 482205110109 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 R615 R616 R617 R618 R619 R620 R621 R622 R623 R624 R625 R626 R627 R628 R629 R630 R631 R632 R633 R634 R635 R636 R637 R638 R639 R640 R641 R642 R643 R644 R645 R646 R647 R648 R649 R650 R651 R652 R653 R654 R655 R656 R657 R658 R659 R66 R660 R661 R662 R664 R665 R666 R667 R668 Description RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 2 Mohm 1 0 125W 1206 RESISTOR 1 2 Mohm
205. 5pF 5 50V NPO 0805 CAPACITOR 15pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22pF 5 50V NPO 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 Part Number 532212613638 222286148103 222286115109 402230160211 402230160211 222286115109 532212613638 222215360229 222286148102 222286115339 222286115829 532212613638 532212613638 222215364221 222286115339 402230160211 222215360229 532212410685
206. 603 403102030104 C240 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C306 CAPACITOR 100nF 10 16V 0603 403102030104 C241 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C309 CAPACITOR 10nF 10 25V X7R 0402 403102040103 C242 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C31 CAPACITOR 2 20 uF 20 6 3V 3 2X1 6 MOLD 532212410685 C243 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C310 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C244 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C311 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C245 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C312 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C246 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C313 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C247 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C314 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 C248 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C315 CAPACITOR 100nF 20 25V X7R 0805 222291016749 C249 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C315 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C25 CAPACITOR 10pF 596 500V NPO 1206 532212613643 C316 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C253 CAPACITOR 220yF 20 10V 0810 SMD 222215364221 C317 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C257 CAPACITOR 100pF 6 3V 202202900655 C318 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C258 CAPACITOR 221 6 3V 202202900654 C319 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C26 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C32 CAPACITOR 2
207. 6690 5 OCXO 6690 6 CRYSTAL 32kHz MC 406 CRYSTAL 6MHz HC49 USM SMD CRYSTAL 40MHz HC49 USM SMD CRYSTAL 10MHz HC49 USM SMD CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 yF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 47pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB1 10 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR TRIM 3 10pF 2 47100 110 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 39pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220pF 5 50V NPO 0805 CAPACITOR 22nF 10 200V X7R 1206 CAPACITOR 2 20 uF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 yF 20 6 3V 3 2X1 6 MOLD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR TRIM 2 5 10pF 500VDC AT2320 2 CAPACITOR 100nF 20
208. 7 1A7 INITN pig PES R653 INTKEYB F1 IM PE4 B16 EMPTY LCDDO TRB 2 C27 C33 OET 48 PJSINTS PES 818 GME 27 27pF DIR1 Eg PISJINT6 PES Bia 100 7 STBYLED gt 2 B7 PJ7IINT7 WAIT DEOT PE7 x 1 1 WANA 8 IRQGPIB 2 PFO 8 L penn 2 5 SPICLK 2 8 ee ART W 8 IRQUSB Spay M2 PAINTS 100 5VD R358 R PROGN 3 2 ST ML C9 SAD TRGLVLA so 12 LOAD TRGLVL A RESFPGA 1 oo CC 11 LOAD TRGLVLB 2 10 90DEG SMD US6A d ung D PAG SDA LODEN PFS LVC08 9 PA7 SCL LCDFP PF7 gt ONCTRL 7 o COUNTER CIRCUIT OFFCTRL OFFCTRL OFFCTRL 7 5 5 RESFPGA DF31 PBOJDACK CI OFFCTR D 3 3VCPU 4 a RESFPGA 133 RESET DB31 180 PB1 DREQ LCDVD15 PL1 UPRD 3 3VCPU UPRD gt uPRO 3 DB30 179 PB2 7 91 4 0116 182 0620 128 2729 Ni BBS Q10 0828 175 DF27 ka Las 1 8VP 4 1 IM RESETOUT 91 DB27 PBS PGO C veca RET EE RESET CSFPGA 181 0826 14 DEZ 1 PBG UARTRXO 861 ee R354 R353 RD DB25 PBZIUARTTXO LCDVDO PG2 AS 33K 33K 3 M6 2 02 TRST P3 mo 123 wg DB24 169 023 LCDVD1 PG3 R614 SDA x68 MS p4 DB23 168 BH LCDVD2 PG4 IICSDA MAX6355 131 rek 0822 167 2 pit pos HAL gt spa 5 2665 Rees TOL TI
209. 71 170 R361 MD11 10 MATS 18 17 SIN SOUT OFFCTRL 7 MD 11 141 MATa 11 418 U14D MDT3 A12 01 15 MA20 1 19 1621 uo ONOFF 93 13 R362 12 14 45 nay 3 3VCPU 294 o MD15 25 MA ha 016 A15 MATS 24 388 36 LVC125 MD17 A16 24 06 CONTRAST jgg 17 DI SPLAY M618 A17 ATB H RI LCDFRM Hiag 16 BOARD I MD19 ae 0 19 pee 204 15 020 20 21 A20 3 3VM6ML gt 15 LCDD2 205 1 MD22 21 R RESET LCDD1 208 42 MD23 83 BYTE LC000 20 2 M024 28 AM29LV640MH 7520 MD25 CEO 56 9 25V 3 3VGPU MD26 3 8 V MD27 SDCET M628 amp MDZG spcik H H 14030 SDCKE 4 5 a R364 5569 WE 222 H 22K U116 T E 5 8 3VCPU gt 82_ SLAVE 4 2 RST H 84 RST 2 10 90DEG SMD RSTIN vsvs 83VDISP 510 ____ 8 R365 MR GND TDO R587 2 gt oNCTRL 7 ams 6355 us 150 150 150 6 R366 NOTUSED ES 7520 3 3VMEM gt _ __ gt 3 3VMEM 1 R367 22K LI X29 1 L 8 IRQGPIB IRGET 8 IRQUSB 1 DOUT 4 TRALED gt 4 TRBLED me 1 4 GATELED COUNTER CIRCUIT 7 STBYLED F31 02 UPEMPTY FIFODATA31 08 377 FO FEMPTY 4031 5 PROGN FIFODATA30 109 zg F1 CPU L 182 MPCLK FIFODATA29 110 Fog
210. 74 zj Xe 19 L30 a 2 C404 ai 583 5 L35 6410 kd m 5 048 544449 6559 gle 6 x R53 GND 4 gt SAS CIE CL gt 51016509 x B la Xena R512 6490 402 we R494 S XAR Z 25548 lt gt R547 g R560 gt 3 GND JST 417 ZOE TE S 25555576438 R649 Casi 4445943 GND Rao a 6657864 in m lt C R409 354 R408 EJ lt 549439 ol 93037 mE GN R6G2 e orc m5 e C434 454 053 E 526 GND C35 353 E368 NY 454 3 LE jeg 19 B R GND GND pu 70 Q u22 Ue3 C us 033 C42 2 2424 2533 3 R53 DO 5 amp 054 lap E A 643025 gt 19 1 133 5 C422 O Figure 6 70 Important locations in the external timebase reference circuits 6 42 Troubleshooting locked and the VCO will go to one of the extremes The typi cal range of the VCO is 95 to 105 MHz thus giving an error of typically 5 in the measuring results Check the loop voltage DC at R272 It should be 1 6 2 2 V Check the 100 MHz signal at U48 4 It should be locked to the incoming 10 MHz at U9 8 Check the lock condition with a 2 channel oscilloscope Trigger on the 10 MHz channel Then the signal on the other channel shall be fixed i e not moving along the time axis Check the PL
211. 8 Pale R149 IC cea Erne R34 12 4 cho mo leo fe R171 m S IR pe R34 IM ro 4 fos JG e isi Ree gt En 5 faroa R196 40 8 Read gt Ce3 B Em 30 e 8 C20 amp Me MI8 9 M20 qme amp m Sde 5 o1 Z S BE GND 23 413 C350 m o 2 R20 241 ee el EB BI S cas SITE 5 39 x BR zz ua B 1 0339 2 299 eps 558 m i A e ES 532194 C947 Es 23452284 R220 feae edeg 61 _ 59 m Es Eo Eu Eo 2 132 55 257625 Se X39 39 5 L gt R215 Re16 34246 fo R pale 1013 2 18233 018 C Paes gt C143 09 gt 0576 peat CS um E Se oo Best ES 19 SIRE ar gt iE 268 64070409 SHE Le 1 R260R26 4 5 4 5 M16 19 1 15 gt 20 2 Figure 6 7 Test points for troubleshooting the input amplifiers ES SES SSE SS O SS SC SO O CO CS 200 400 5 A Chi X 0 00 V
212. 84 Terms of start and stop During transmission the SDA can be changed only when the SCL is low The microprocessor always begins to send the address infor mation The format of this address information is seven ad dress bits one read write bit and one acknowledge bit The addressed slave accepts by keeping the SDA line low while the acknowledge bit ACKN in is sent by the micro processor Example of addressing address 30H START MSB LSB RW ACKN Figure 6 85 Addressing The read write bit R W has the following meaning R W means information from the slave to the uprocessor R W 0 means information from the processor to the slave The data information is sent after the address information The format of the data information is eight data bits followed by one acknowledge bit The reciever accepts by keeping the SDA line low while the acknowledge bit ACKN in is sent Example of data transmission data 9BH MSB LSB ACKN Figure 6 86 Data transmission U13 INT CONTROL 5 6 MHz 4 7 056 057 953 054 32 zk USB DIRGPIB 33VDi 5VD 40 MHz 2 U 2 02 9 d 33S WAW 30 LHVd R N fool x20 1 U38 H DATA 8 ADDRESS T 935234089 Na RESULT HANDSHAKE a ALERT 3 3 034 INT Mi
213. 86 R287 R288 R289 R290 R291 R292 R293 R294 R295 R296 R3 R303 R305 R306 R307 R308 R309 R310 R311 R312 R313 R314 R315 R316 R317 R318 R319 R320 R321 R322 Description RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 220 ohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 120 Kohm 1 125W 100PPM 1206 RESISTOR 27 ohm 1 0 1W 100PPM 0805 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 330 OHM 1 0 1W 100PPM 0805 RESISTOR 27 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 000 ohm 0 1W 100 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 POTENTIOMETER 100kohm 3304X 1 104 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 220 ohm 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 120 Kohm 1 125W 100PPM 1206 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 470 ohm 1 125W 100PPM 1206 RESIST
214. 9 low is interrupt The processor then scans the keys via the bus to find the depressed key See Figure 6 82 During the scanning there may appear some extra interrupts This is not an error condi tion Microprocessor Bus amp Interfaces The microprocessor bus is divided into two parts with buffers The inner part consists of the Flash PROM and the SDRAMs Buffers isolate the inner part from long lines in order to make the SDRAM work safely The buffers of the 32 bit data bus are bidirectional and a control signal opens the buffers only during reads and writes U56 8 low to open buffers The di rection of the buffers is controlled by the rdn from the proces sor The outer part consists of the 32 bit data bus and the 5 bit ad dress bus It connects the processor U13 to the FPGA U11 the GPIB and the USB See Figure 6 87 The FPGA connection has 32 data bits 5 address bits chip se lect wrn and rdn The FPGA is controlled by the processor via the bus measurement functions are selected for instance The FPGA is controlled between each measurement or block of measurements An interrupt signal from the FPGA is con nected to the processor See Figure 6 89 for a typical timing diagram Troubleshooting 6 49 The connection to the USB has 16 data bits I address bit chip select wrn and rdn An interrupt signal from the USB IC is connected to the processor See Figure 6 90 for a typical tim ing diagram The USB IC is a
215. 91 0200 CONNECTOR 2x10 POL SMD CONNECTOR 20POL HEADER SMD 15 91 0200 Part Number 222215360229 532212613638 222286148103 202280000247 202280000247 402230160211 532212613638 222286148103 222286148103 532212410687 532212613638 532212613638 532212613638 222286148103 222286148103 222286148103 532212410687 532212410687 532212410687 222286148103 222286148103 222286148103 222286148103 225201471158 225201471158 225201471158 225201471158 225201471398 532213034337 532213034337 532213034337 532213034337 532213032076 532213032076 532213034337 532213034337 532213034337 532213034337 532213032076 532213032076 403105000001 403105000001 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 532213034337 933812240701 933812240701 532213034337 482213082262 242202505569 242202518436 242202505569 Replacement Parts Main Board Version A Pos J17 J22 J25 J28 K1 K2 K3 K4 5 K7 Ka L10 E11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25 L26 L27 L28 L29 L3 L30 L31 L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 Description CONNECTOR 6POS 39 28 1065 CONNECTOR 4POL USB PCB CONNECTOR 24 POL 57LE 20240 7700D35G CONNECTOR HEADER 2POS SMD AMP 6 176125 2 RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY
216. A BFR92A 20V 50123 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT93 35MA 12V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR BF513 03A20V SOT23 Part Number 242201520096 242201520096 242201520096 482213060686 532213060705 532213060647 532213044711 532213060647 532213060647 532213044824 532213060647 532213060845 532213040781 532213040781 532213060705 532213040781 532213040781 532213040781 532213040781 532213044743 532213044743 482213060511 482213060511 482213060686 532213044711 532213060647 482213060686 532213044711 482213060511 482213060686 532213044711 482213060511 482213060686 532213044711 532213060845 532213044711 532213060845 532213060845 933628570701 532213060845 532213060845 532213060845 532213060845 482213060511 482213060511 532213062639 532213062639 532213060647 482213060511 532213062639 934002210701 934002210701 532213040781 532213060845 933917180115 482213060511 532213044711 532213060647 532213044711 532213044711 532213044711 532213044824 532213060647 482213060686 Pos R1 R10 R11 R12 R13 R132 R133 R134 R135 R136 R137 R138 R139 R14 R140 R141 R142 R143 R144 R145 R146 R147 R148 R149 R150 R151 R153 R154 R155 R156 R157 R158 R159 R16 R160 R161 R162 R163 R164 R165 R166 R167 R168 R170 R171 R172 R173 R174 R175 R176 R177 R178 R179 R180 R181 R182 R183 R184 R185 R187
217. A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 4 3yH 1 6 FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 100nH SMD FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 4 70uH 5 LQH1N4R7J FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm CHOKE 4 70uH 5 LQH1N4R7J CHOKE 4 70uH 5 LQH1N4R7J FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm Part Number 242202508091 242203300291 532226760148 403110571100 532226544074 242213207707 242213207707 242213207707 242213207707 242213207707 242213207707 242213207707 242213207707 242254943133 242254900035 242254943133 242254943133 242254943133 242254900035 242254943133 242254943133 242253600772 242254900035 242254900035 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242253600772 242254943133 242253600773 242254943133 242253594048 242254943133 242254943133 242254943133 242254943133 242254943133 242253594048 242253594048 242254943133 24225494313
218. ACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 HF 20 6 3V 3 2X1 6 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 68pF 1 SOV NPO 0805 CAPAC
219. ANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 0 5A BC807 25 45V SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR 0 5A BC807 25 45V SOT23 TRANSI LF N BCP54 1A 45V SOT223 1 33W TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BFT93 35MA 12V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR 513 03A20V SOT23 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 Part Number 242201520096 482213060686 532213060705 532213060647 933347730701 532213060647 532213060647 933347740701 532213060647 532213060845 532213040781 532213040781 532213060705 532213040781 532213040781 532213040781 532213040781 532213044743 532213044743 482213060511 482213060511 482213060686 933347730701 532213060647 482213060686 933347730701 482213060511 482213060686 9
220. AT18 V BAT18 97 NOT USED MINICOAX 3 5 J8 KEK 0 MM R139 R140 R141 R142 2 GR 1K 2 i R143 R144 R145 100NF 4 S at 1 R146 47 470K 120K BF513 Q2 902 680K 220K 902 100 1 BFR93A R148 88 47 R147 KIA 680K R149 R150 R151 330 052 c7 Su 10M 1 a4 R154 LL BFROZA BFT92 R153 stig 1 5PF 500V aes mune 47 47 33 ids XII LC gt A 6 A y 47K 100K ci 4 7 10 our 2 n Rise T 4 4 5 OUT gt AN 6 com R273 R158 R159 470K R160 R167 R161 gt ADCMP565 R162 R163 R164 R165 R166 T 120 100K 47 47 i Q5 33 120 120 120 120 150 T I BFR92A R168 47 82 R169 R170 R171 R172 R173 M 68 68 R174 T 1 BERGA T E 23 gt R175 R176 R177 R178 R179 2 12K 47 4 120 120 120 120 150 2 995007 LMC6081A up2 C119 100NF T R182 Jk 150 470K ne T R183 R184 R185 i 10K 220 1K 5 2VAI Die e t A L1 R187 4 22NF 200V C123 mm C125 C135 zd 2 2 2UF 6 3V AUN 10 PCB Pattern R613 A L 11 mes pied C234 C20 5 2VAI R191 K l Not Used 27PF 1 12VI 1 TRG_LVLA TRG LVL A 4 4 IL FILTER_A 1M 5 FILTER Kiso 5 COMA R193 R194 Ra C130 E R192 FILTER_A LC E 5 B
221. Bzy START STOP Figure 6 31 Terms of start and stop During transmission the SDA can be changed only when the SCL is low The microprocessor always begins to send the address infor mation The format of this address information is seven ad dress bits one read write bit and one acknowledge bit 6 22 Troubleshooting The addressed slave accepts by keeping the SDA line low while the acknowledge bit ACKN in is sent by the micro processor Example of addressing address 30H START MSB LSB RW ACKN Figure 6 32 Addressing The read write bit R W has the following meaning R W I means information from the slave to the uprocessor R W 0 means information from the to the slave The data information is sent after the address information The format of the data information is eight data bits followed by one acknowledge bit The reciever accepts by keeping the SDA line low while the acknowledge bit ACKN in is sent Example of data transmission data 9BH MSB LSB ACKN Figure 6 33 Data transmission The processor is the Master on the bus Slaves on the bus are The digital I O IC 040 with address 20hex It controls the loading of the FPGA at initialization after power on it controls the relays and filters in the input amplifiers and it reads the prescaler code at initialization after power on The tempera
222. C212 L10 22 MN R348 R349 MON E AUN 52VA 120 BLM21A102S Y 029 100 100 Gi 5 2VA BAV99 47P BLM21A102S 52VA A A 3 BN 4 1 4 24V 2IV 5 C 5 BURST 12578 50 5VD 1 2 5 7 8 3 3VD 3 3VD 3 3V_U4 gt gt 33V_U4 1 7877 43 3VA 3 3VA L11 7 12VU Ra 12V0 BUNATESUUS 3 3VA 3 3VA 3 3VA C213 10N usc U8B 15UF 6 3V mm gt LM358 U12F R 3 3V_PLL CI IC L57 155 966 n 2 amp bia 51 112 SV IC BLM21A102S BLM21A102S IC NOT USED 55 145 5VA v TA Rast ES u Fo pla 106104 LM358 BLM21A102S T 7 3 3U49 gt 1457 12VA 1 BEMZ1A102S m t iza 5 S E aaa 89 use 99 C216 C217 C218 C219 czo 802025 UP oor C221 C222 99 C228 C494 99 C495 86 LTc8043 LVC00 S6 10N 100NF 100 10 8 lt 595 100NF LVC1604 25 6 Lvc1604 NOT USED 5 NOT USED 1604 5 gt OPA277 277 4 4 1 5 2VA 147 8 12VA 8 7 5 2VA D gt 5 2VA Lop 12VA 5 z 3 z i Schematic Diagrams 9 39 This page is intentionally left blank 9 40 Schematic Diagrams Supply Voltages PCB 1 sheet 6 7
223. C425 Y BLM21A102S 100uF 6 3V 100uF 6 3V gt 1 4 E L20 5VD C236 us mw C530 C575 C384 C390 cS 7 4 100NF 10N 100uF 6 3V SEEM 100uF 6 3V SEEM 100uF 6 3V gt 100uF 6 3V 148 1 gt sVAl 3 BLM41P800S BLM21A1028 za C253 HB 1 C420 C419 cats C413 a 220uF 10V in 1 in kia 1 1 1 1 4 Soc 5 1 4 C580 C537 C582 care C538 C566 508 tn 4 in in 4 in gt 5VBI 3 5VD 4 5VD m ER C392 C391 265 I C266 C267 C268 I gt ACDCB 3 n 1n T 400NF 100 T 100NF T 100NF C483 C245 ww 1 100NF 10N PA C478 C302 C579 C343 C373 C576 C577 100NF 1 1 in in in in 150 7 5 2VI gt 52VA 3 C269 C270 C271 C272 C273 C274 22K 100NF 100NF T 100NF 100 100 100 C246 ca7s 276 C567 277 C279 280 100NF 10N ide w 100NF T 100NF T 100NF T 100n 100NF T 100NF 4 045 8C807 25 gt 6 8K L46 id B Fi L51 BLM41P800S 4 gt coms 3 1 1 1 Z gt 5 2V8 3 C289 290 C291 C202 C203 C204 C205 296 C297 C298 _ C299 c300 2 1028 100 100 L 100NF 100NF 100NF T 100NF 100NF T 100NF T 100NF T 100NF T 100NF T 100NF PLM21A1028 C247 C479 C238 100NF 10N 100NF 10N A z 2 9994 3298 3 3VFPGA gt gt 3 3VFPGA 2
224. CD controller is a peripheral inside the processor This controller sends signals and data to the driver circuits in the LCD on the display board The processor also controls the OFF switch Only a signal from the processor can switch off the power The OFF button on the front panel is read by the processor ON is handled without the processor since it cannot respond to external stimulus in standby mode Power Supply This timer counter has no primary power switch If connected to line power there are live parts inside the cabinet and some supply voltages are present on the main circuit board even if the secondary power switch on the front panel has been turned off standby mode A semi protected AC DC module is placed on spacers over the main circuit board It delivers three regulated DC voltages to the counter 15 V 5 V and 15 V When the counter is connected to line power these voltages are always present There is a 5 V trimmer potentiometer on the AC DC mod ule The ON OFF circuit is active as soon as the counter is con nected to line power The instrument automatically powers up when line power is applied Only the processor can switch the circuit to OFF state standby mode Then only the power but ton on the front panel can switch the instrument to ON Once connected to line power and in OFF state standby mode supply voltage 12 VU is distributed to the oven oscillator to keep it warm In standby mode a red LED
225. CITOR 10nF 20 50V X7R 0805 532212234098 027 DIODE 0 10A BAV99 SOT23 532213034337 C532 CAPACITOR 10nF 20 50V X7R 0805 532212234098 D28 DIODE 0 10A BAV99 SOT23 532213034337 C533 CAPACITOR 10nF 20 50V X7R 0805 532212234098 029 DIODE 0 10A BAV99 SOT23 532213034337 C534 CAPACITOR 10nF 20 50V X7R 0805 532212234098 D30 DIODE 0 10A BAV99 SOT23 532213034337 C535 CAPACITOR 100nF 1096 16V X7R 0603 403102030104 031 DIODE 0 10A BAV99 SOT23 532213034337 C537 CAPACITOR 1nF 2096 50V X7R 0805 532212234123 032 DIODE 0 10A BAV99 SOT23 532213034337 C538 CAPACITOR 1nF 2096 50V X7R 0805 532212234123 033 DIODE 0 10A BAV99 SOT23 532213034337 C539 CAPACITOR 1001 6 3V 202202900655 034 DIODE 0 10A BAV99 SOT23 532213034337 C540 CAPACITOR 100nF 20 25V X7R 0805 532212613638 035 DIODE 0 10A BAV99 SOT23 532213034337 C541 CAPACITOR 100nF 20 25V X7R 0805 532212613638 036 DIODE 0 10A BAV99 SOT23 532213034337 C542 CAPACITOR 100nF 20 25V X7R 0805 532212613638 037 DIODE 0 10A BAV99 SOT23 532213034337 C543 CAPACITOR 1nF 2096 50V X7R 0805 532212234123 046 DIODE 0 10A BAV99 SOT23 532213034337 C544 CAPACITOR 1nF 20 50V X7R 0805 532212234123 D48 DIODE 0 10A BAV99 SOT23 532213034337 C545 CAPACITOR 100nF 2096 25V X7R 0805 532212613638 D50 DIODE BYD17G 400V 1 5A SOD87 933812240701 C546 CAPACITOR 100nF 20 25V X7R 0805 532212613638 051 DIODE BYD17G 400V 1 5 50087 933812240701 C547 CAPACITOR 100nF 20 25V X7R 0805 532212613638 052 DIODE 0 10A BAV99 SOT23 532213034337 C548 CAPACITOR 100nF 20 25V
226. D IC CMOS 74ALVC00 IC DIG BUS ISP1181B AMP LM358 x2 SMD 508 IC OP AMP LM358 x2 SMD 508 IC DIG BUS TNT4882 IC CMOS TRANSL3 5V 74LVC4245AD IC DIG TEMP SENSOR LM75 IC CMOS 74ALVC00 IC DIG BUS 2 PCA9555PW IC CMOS 74HCT126D SMD 5014 IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC CONV DAC 5156 12bit dual IC CMOS 74LVC1G04GV LOG 1xINV IC CMOS 74LVC1G04GV LOG 1xINV IC DAC 12BIT LTC8043 TLE2022C SMD SO IC CMOS 74LVC162245ADGG TSSOP48 IC CMOS 74LVC162245ADGG TSSOP48 IC CMOS 74LVC162245ADGG TSSOP48 IC CMOS 74LVCO8AD SO14 IC CMOS 74LVC1G02GV NOR SOT753 277 Part Number 532211712507 932220497682 932220399682 932220433682 932220434682 482220931775 532220990434 932220425682 932220425682 932207501682 932220437682 932220430682 932211044682 403106000012 932211044682 932219434682 403106000008 403106000008 403106000008 403106000008 932220429682 932220429682 932220405682 932214746682 932214746682 932220497682 932218755682 932218755682 932218755682 932218755682 932214746682 933757050701 932214746682 932214746682 935260734701 932220403682 482220960175 932220398682 935260734701 932220496682 935271360701 933965740685 482220960175 932220397682 935260749701 932212511682 932220496682 935269569701 933757050701 403106000002 403106000002 403106000002 4031
227. DC converter Five different voltages are generated A control signal from the processor switches the converter ON OFF and also sets the contrast of the display The 4 LEDs on the display board are controlled from the mea suring logic and the ON OFF circuit Keyboard The PCB covers the back of the front unit The keys are laid out as a crosspoint switch matrix consisting of 25 regular push buttons plus a special power button When one of the buttons is depressed the dedicated keyboard IC U3 responds by sending an interrupt to the processor The processor scans the keyboard over the bus to find out which button calls for attention The power button differs from the others by having a dual function In Standby Mode it turns on the ON OFF cir cuit directly but when the counter is ON it is read as any other button Then the processor turns off the counter This arrange ment is necessary since the processor is inactive in standby mode Main Board Input Amplifiers Input amplifiers A and B are identical with gt 300 MHz band width They are controlled by the processor with relays etc The analog input signal is transformed to a digital signal The 4 6 Hardware Functional Description output signals are LVPECL 2 4 V and 1 2 V approxi mately and fed to the measuring logic For a block diagram of the input amplifiers see Figure 4 2 m Impedance Selector This stage selects 1 MQ or 50 input impedance with a relay In
228. EA z 0 BFR92A x36 e 5 IMP A oe R612 4 4 4 pi pe C227 2 C228 C229 M46 C230 D31 033 2 R196 1K BANG UD2 10N Ravi 10N 1 1002 10N _UD2 10N 4 A 4 4 F U50A Ark C126 C127 207 1 3 100NF 100NF e 2 C497 R203 TLE2022C 12VI 5VBI 5VBI 2 5 10PFI250V R200 R201 12 5V 5V R224 5 2VBI 1 5VBI 4 470 R197 C132 C134 R611 R202 m 2K 12 017 018 019 020 100 R210 3 9pF 500V P gt DHA 1 L 22UF 6 3V 7 Ez BAV99 BAV99 BAV99 BAV99 R208 C138 C139 9 REAR PANEL INPUT B C tH i Rao 100NF 100NF TLE2022C 10 2 5 10PF 250V BAT18 V BAT18 L L R211 R212 R213 R214 K6B A 10n i A 4 A REI 3 R215 R216 R217 52VAI 120K c 1 8553 sj 010 807 47 470K 4 UD2 680K 220K UD2 47P 100 T BFR93A R220 47 680K ZEN R221 R222 R223 052 co C143 3 ciu 10M 1 012 U3B R226 Wi used BFROZA BFT92 R225 IC 1 5PF 500V A 8 LE me e 1 5 500 3 10PF lo p 0 T 1 T R230 T a 3 So 9 gt BN 6 R229 f i L d v7 our R258 R231 R232 470K 27pF R227 R239 R233 KBA ADCMP565 R234 6235 R236 R237 R238 120K 1M 100K 47 47 1 013 3 3 120 120 120 120 150 ish I BFR92A R219 R240
229. F 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 1001 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 1001 6 3V CAPACITOR 220uF 20 10V 0810 SMD CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 220yF 20 35V 1012 SMD CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 220uF 20 10V 0810 SMD CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 220uF 20 10V 0810 SMD CAPACITOR 100nF 20 25V X7R 0805 Part Number 532212232531 532212411418 532212613638 532212613638 532212613638 222286118689 222286115109 532212232531 532212411418 532212232531 532212232531 403102151080 532212613638 532212613638 532212613638 222286118689 532212613638 532212411418 532212613638 532212613638 532212411418 532212613638 532212613638 532212411418 532212613638 532212613638 532212411418 532212613638 532212613638 532212613638 222215364221 532212613638 532212613638 222286148102 222215360229 532212411418 222286148102 532212613638 532212613638 532212613638 532212613638 222215360229 222215360229 222215360229 222215360229 532212613638 202202900655 202202900655 532212613638 222286148103 202202900655 202202900655 2
230. IS e ee 7 R 80 32 i E m 385 Du S RS55JRS5 C 28 gt GN 3836509 m Rar pare 2445548 0281 cc opa 065 ECA lug BLESS 2 Reed Read ni 155496439 Jeo 6 GND 23 R413 ENDS 3 R374c3eR373C33q 25641 GA R545 035 240212 HE 6434 6450 _ 1053 OUS EE men Q 209 8 m m J42 8 e B zje GND Blo 5 2349 8 Rsd F 5 010162013 B IX 405 L C347 Ese 3246357 a mE MN R C161 2 IS gg 2530 E esee eod ig 5 xag g t a EJ 9 8 p 5 Jo P KO 015 2616 23 24 amp gt 020 zB 241 2 E 2 ko CI d Re 61 ucza zl ZIE GN Y 52 Jel 96653 map eee z BT Bl 98 lm 2 m 3 _ 24078409 zez U 5320 259 _ C148 R268 Bse E Le cel 9 1 Le s 17 1 ma 6 19 16 JIS Jb GND O FEE 2 m 9 6 Schematic Diagrams Main Schematic
231. ITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10pF 5 50V NPO 0805 Part Number 532212613638 532212613638 532212613638 222286148103 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212410685 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 222286148103 532212410685 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212410685 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 532212410685 532212613638 532212613638 532212232531 532212613638 532212613638 222286118689 532212232531 532212232531 532212232531 532212613638 532212613638 222286148103 222286118689 532212613638 222286115109 C338 C339 C340 C341 C342 C344 C345 C346 C347 C348 C349 C350 C351 C352 C353 C355 C357 C358 C359 C360 C361 C362 C363 C364 C365 C366 C367 C368 C369 C370 C371 C372 C374 C375 C376 C377 C378 C380 C381 C382 C383 C385 C386 C387 C388 C389 C393 C394 C395
232. ITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 10nF 2096 50V X7R 0805 CAPACITOR 6 80 HF 20 16V 6 0X3 2 MOLD Part Number 532212410685 222286148103 222286148103 222286148103 532212613638 402230160211 532212613638 532212410685 532212410685 222286148103 222286148103 532212613638 532212613638 222286148102 222286148102 532212232531 532212232531 532212232531 222286148102 222286148103 222286148103 532212613638 532212232531 222286115339 402230160211 402230160211 222286115339 222286148103 222286115339 532212410685 532212232531 402230160191 222286118689 222286115479 222286118689 222286148103 222286148103 222286148103 222286148103 202202900655 532212613638 532212613638 532212613638 532212613638 222286148103 402230160221 532212613638 532212613638 222286148103 532212613638 2222861
233. ITOR 22uF 6 3V CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 4 7uF 20 35V 0405 SMD CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 DIODE 10BQ030 LED 3mm RED FLATTOP LED 3mm GREEN FLATTOP LED 3mm GREEN FLATTOP LED 3mm GREEN FLATTOP DISPLAY 90 SER CONNECTOR 20POL FPC SMD CONNECTOR 20POL FPC SMD CONNECTOR 20POL HEADER SMD 15 91 0200 CHOKE 10uH SMD FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 33 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 470 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 820 Ohm 1 0 1W 100PPM 0805 RESISTOR 100kOhm 1 0 1W 100PPM 0805 AMP LM358 x2 SMD 508 AMP LM358 x2 SMD 08 IC DIG BUS 2 PCA9555PW IC ANA SMPS CTR TPS61045 Part number 403110066160 222291016749 222291016749
234. ITOR 470pF 10 50V X7R 0402 403102040471 R585 R586 R587 R590 R591 403100115010 C508 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R368 R369 403100122040 C513 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R549 R662 403100147010 C514 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R637 R639 R644 R647 R648 403100210010 C515 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R649 R650 R651 R653 R654 C516 CAPACITOR 10nF 10 25V X7R 0402 403102040103 i ooo C535 CAPACITOR 100nF 10 16V X7R 0603 403102030104 03100210050 C568 CAPACITOR 10nF 10 25V X7R 0402 403102040103 Bee eee ieri ROS7 403109210030 C569 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R663 6664 R665 R666 R668 C570 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R638 403100210090 C571 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R590 R591 403100215010 C572 CAPACITOR 10nF 10 25V X7R 0402 403102040103 R633 R634 R356 R357 R365 R629 R630 403100222020 R548 RESISTOR 91 kohm 1 0 1W 100PPM 0805 403100291030 R669 403100222090 U13 IC C LH79524 403106000012 R370 403100233030 8 26 Replacement Parts Parts Unique to Version A Pos Pos Part Number R585 R586 R587 403100247010 R523 R628 R635 R636 403100247020 R371 403100247030 C431 403102131590 U117 932220434682 U25 933757050701 Replacement Parts Parts Common to Version A and Version B 8 27 This page is intentionally left blank 8 28 Replacement Parts Parts Common to Version A and Version B Chapter 9 Schematic Diagrams How to Read
235. L C116 B 2 S 5 R354 Jona cy BE 524 S X S R 5 MI8 M20 3 mE 8 g 6370 2 3 65 R zB n 2 bu 8 3 ak g olg E m 23796334 5 031 n M206 5 S R209 L Je C IC 345 149 O lala ja LC CL C8 Reed ale K8 BREER CI 2 8 JE A W o S 4 1136 Eje e s C3 ols Ja S S B REIP REIS 3 Z ej Ele 8 fo peed 330 2331 a dca 5 3 0 cm 639200 4 4 10 Blog M x3 5 E 8220 516 M gt Rog gt 8 ER 915 8 gt po aj C gt 5 Rers Reielkesd Read PS BEM 2 105592 ue 009 E 5 E ES SERBIA gt pla teed g gt LC n melee Rez C143 leat Rer RA 15261 6 ER EIBISISIS lt SIRE pisz ICI 5 98 E 25 a C148 CC 5 R 9407408 EJ ges le E 526817 z 55893 Ba E cal EN 2517 M4 MI4 8 MI6 513 19 1 RSI 9 28 Schematic Diagrams 2158 8159 6164
236. L LOCK signal at U9 14 lock is high Prescaler The optional prescalers are not to be repaired The faulty unit should be sent to the factory and an exchange unit will be returned The best way to isolate the fault is to use another functioning timer counter with the same prescaler Interchange the prescalers and see if the problem follows the prescaler or the timer counter First measure with Channels A and B and check that the result is OK Select the function Frequency C Connect a signal ac cording to Table 6 2 to Input C Check the following pins on the prescaler connector J15 on the main circuit board Pin 1 5 V supply Pin 5 12 V supply Pin 7 ON OFF ON is 0 V Pin 11 test signal should be 0 Pin 12 code 0 see Table 6 2 Pin 14 code 1 see Table 6 2 Pin 16 code 2 see Table 6 2 Pin 4 prescaler output signal PECL levels 4 1 V and 3 4 V PRESCALER 2 7 GHz Frequency GHz 1 Level dBm 0 Division Factor 16 Code 0 0 Code 1 1 Code 2 0 Table 6 4 characteristics Measure with oscilloscope and probe at pin 4 The output fre quency should be the input frequency divided by the factor in the table Check with a frequency counter Note The 2 7 GHz option has a sensitivity trimmer See page 7 14 for information on how to adjust it Microprocessor 8 Memories Startup Process The processor in this instrument is a Sharp LH79524 wit
237. M 1206 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 150 Ohm 1 0 125W 100PPM 1206 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 10 kOhm 1 0 1W 100PPM 0805 RESISTOR 220 Ohm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100PPM 0805 RESISTOR 27 Ohm 1 0 1W 100PPM 0805 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 470 kOhm 1 125W 100PPM 1206 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 1 MOhm 1 0 1W 100PPM 0805 Part Number 403100222020 532211712499 532211712499 532211712499 532211712497 482205154701 482205154701 482205110109 532211712497 532211712497 403100200000 532211712498 532211712499 532211680448 482205154704 482205151204 532211711787 482205152204 532211712497 532211712505 532211712508 532211711787 482205110105 532211712505 532211712505 532211711788 532211712501 403100247030 482205154704 532211712505 482205110105 532211712501 532211712505 532211712505 532211711788 482205110121 482205110121 482205110121 482205110121 482205151501 532211712505 403100282090 403100268090 403100268090 403100247020 532211712505 532211712505 532211710968 482205110121 482205110121 482205110121 482205110121 482205151501 532211712498 482205151501 482205154704 532211712499 403100222010 532211712498 403100227090 482205154704 482205154704 532211712498 403100210050 Replacement Parts Main Board Version A Pos R192 R193 R194 R195 R196 R197 R198 R199 R2 R200 R201 R202 R203 R205 R206 R207 R208
238. MOS 74HCT126D SMD SO14 IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC OP AMP KM4100IT5 SOT23 5 260MHz IC CONV DAC MAX5156BCEE 12bit dual IC CMOS 74LVC1G04GV LOG 1xINV IC CMOS 74LVC1G04GV LOG 1xINV IC DAC 12BIT LTC8043 IC OP TLE2022C SMD SO IC OP AMP OPA277 IC OP AMP OPA277 IC OP AMP LM358 x2 SMD 508 IC ANALOG PLL 200MHz ADF4001BRU Front Unit Part Number 933757050701 403106000002 403106000002 403106000002 403106000002 403106000001 935271788125 935271788125 932220498682 932207300701 932214746682 932214746682 532220982941 932220404682 Pos C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C5 C6 C7 C8 C9 D1 D2 D3 D4 05 E1 J1 J2 J3 L1 L2 R1 R10 R11 R13 R14 R15 R16 R17 R18 R19 R2 R20 R3 R33 R34 R4 R5 R7 R8 R9 U1 u2 U3 U4 Description Display board complete CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 UF 20 35V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 2 20 UF 20 35V 6 0X3 2 MOLD CAPACITOR 2 20 UF 20 35V 6 0X3 2 MOLD CAPACITOR 22uF 6 3V CAPAC
239. NO D26 330 A19 D18 30 2A4 lt gt pz 0 T PN1 D27 027 AZ 20 Di 2A5 285 20 0 7 DT 2A5 285 4 TRBLED gt 5 PL4 D28 21 2A6 286 286 470 PLSJD29 414 D29 Di6 26 26 28 23 6 D0 26126 289 23 mE 1DO Bi4 D30 4 PL6 p30 814 557 OE 7 PL7 D31 RYBY 27 52 H 3 2 ETT E 32 4 pra 1 24 pra REGI SDCKE GATE ANI 14 9 WPIACC LVC162245A LVC162245A 4 _ GATELED gt 8 H DOMT t RESET HCT126 70 153 BYTE 3 3VCPU DOW 54 2 1 4 00M Y Gia AM28LV640MH DEI 4 Deso 218 R663 DOST R647 RAS M15 OEP LCDLD JE R363 628 816 r LCDCLK _ 20 Jos TOR 1 1 100 LCDCLK LCDFR 19 X55 OE 4649 CONTR V1 WR CSGPIBN r1 U52A 3 3VCPU 100 CONTR LCDRAN BLEU sy 146 w ECDRAN 1 8VP gt 1 v2 RST He 418 BLEOJPM4 PMO CSO GSF 4 Joo 8650 BLETIPMS 1 51 IE 180 LCDRAN teos H 52 8L62 M6 PM2 CS2 M18 81 MEE 16062 71 L K5 BEESIPM L14 AO 6 182 PA AFO Rt 100 22001 12 TOL GND dB ad 4 H2 pg LODLPIPEO 812 R651 corr SCL DI SPLAY 176295 L 1879524 185 1A5 A LCDDCLK PE1 513 306 10 BOARD 3 3VCPU a 11 186 1A6 AFR DONE 91 2 100 INTKEYB 9 CONNECT CR 18
240. O EO PO rat PCIE PO 200mV Ni 40015 p Chr X 0 00 V Figure 6 63 _ Oscillogram showing the signal at U3 9 03 13 6 38 Troubleshooting OO SWE SS SS GR GE SG GG O GG GE A GG LSA U EA 200mV 400 5 Chi X 0 00 V Figure 6 64 _ Oscillogram showing the signal at U1 2 U2 2 100mv A Chi X 800mv Figure 6 65 Oscillogram showing the signal at X6 Period Single A Troubleshooting 6 39 100 100ms X 800 Figure 6 66 showing the signal at X7 Period Single Timebase Reference Circuits The measurement reference is either a 10 MHz signal from an internal oven controlled crystal oscillator on the main circuit board or a signal from the external reference input that accepts the following frequencies 1 5 and 10 MHz A frequency mul tiplier transforms the external signal to 10 MHz The selected 10 MHz reference is always available at the internal reference output See Figure 6 67 The main PCB is prepared for both types of internal timebase but only one of them is mounted The selection is made at the factory You have to run the utility program if the oscillator is to be changed Closed Case Calibration is used to adjust the oscillator On power up the processor outputs the setting that is stored as the correct one for 10 000000 MHz It will
241. OR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 Part Number 532212614081 532212410685 532212234098 532212234098 532212234098 532212613638 532212232658 532212613638 532212410685 532212410685 532212234098 532212234098 532212613638 532212613638 532212234098 532212234123 532212234123 222286115101 222286115101 222286115101 532212234123 532212234098 532212234098 532212613638 222286115101 222286115339 532212232658 532212232658 222286115339 532212234098 222286115339 532212410685 222286115101 222286115159 222286118689 222286115479 222286118689 532212234098 532212234098 532212234098 532212234098 202202900655 532212613638 532212613638 532212613638 532212613638 532212234098 222286115279 532212613638 532212613638 532212234098 532212613638 532212234098 532212234098 532212234098 532212613638 532212234098 225201471398 532212613638 532212234098 Pos Description Part Number Pos Des
242. OR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 39 KOHM 1 0 1W 100PPM 0805 Part Number 532211712498 482205151501 532211680447 532211712499 403100222010 532211712498 482205151204 403100227090 532211680447 532211680447 403100233010 403100227090 532211712497 403100200000 532211712499 532210110841 532211712505 532211712499 403100222010 403100233020 482205151204 403100210050 532211712499 403100247020 403100222020 403100
243. PLL circuit giving 10 ns basic mea surement resolution To increase the measurement resolution further external interpolators are used The measuring logic also controls three LEDs on the display board a GATE LED indicating that a measurement is in progress and two trigger indicators telling that the comparators are triggering on the in put signals A separate 32 bit bus is used for transferring mea surement data from the FPGA to the processor Some control signals to the hardware come from the FPGA due to a shortage of processor pins The four external interpolators are identical Depending on the selected measurement function 0 2 3 or 4 interpolators are used A pulse representing the time from an event on the input to the following rising edge of the 100 MHz reference is fed to the interpolator During the pulse time a constant cur rent is charging a capacitor The voltage on the capacitor is measured with a 10 bit ADC The capacitor is discharged and the interpolator is ready for a new measurement 4 8 Hardware Functional Description An external control input BNC is located on the rear panel A signal applied to this connector can be used for controlling the start of a measurement for instance A comparator converts the analog input signal to a logic signal Processor Circuits The processor is a Triscend A7S It contains an ARM7 core and peripherals It runs on a 30 MHz internal clock The core uses 2 5 V supply voltage and th
244. PM 0805 RESISTOR 3 3 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 1 0 125W 100PPM 1206 Part Number 403100233030 403100247020 532211712505 532211712497 403100222020 532211712499 403100247030 532211712505 532211712497 403100282090 532211712505 532211712499 532211712499 403100247020 532211712505 403100282090 403100222020 532211712497 532211712497 532211712497 532211712505 403100222020 403100268020 403100222020 403100268020 403100247020 403100247020 403100222020 403100268020 403100222020 403100200000 403100268020 403100222020 403100268020 403100222020 403100268020 403100222020 403100268020 403100222020 403100268020 403100215020 403100247010 403100222020 532211712509 532211712499 532211712498 532211712508 532211712498 532211712498 482205110109 482205110109 482205110109 482205110109 482205110109 403100222020 403100233020 482205110109 482205110109 482205110109 482205110109 482205110109 532211712498 482205110109 482205110109 Replacement Parts Main Board Version A Pos R469 R470 R471 R472 R473 R474 R475 R476 R477 R478 R479 R480 R481 R482 R483 R484 R485 R486 R487 R488 R489 R490 R491 R492 R493 R494 R49
245. PPM 0805 RESISTOR 270 OHM 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 820 ohm 1 125W 100PPM 1206 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 680 ohm 1 0 1W 100PPM 0805 RESISTOR 22 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 680 ohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 1 MOHM 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 68 KOHM 1 0 1W 100PPM 0805 RESISTOR 33 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 82 OHM 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 10 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 1 5
246. R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 1uH 20 B82412 A1102 M FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD SHIELD CLIP SMD Part Number 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 242254900035 242254943133 242254943133 242254943133 242254943133 242254943133 242254943133 241254100458 242254943133 242254943133 242254943133 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 242201520096 2
247. R TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 27pF 5 50V NPO 0805 CAPACITOR 3 9pF x0 25pF 500V NPO 1206 CAPACITOR TRIM 3 10pF TZBX4Z100BB110 CAPACITOR 3 9pF 0 25pF 500V NPO 1206 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 39pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220pF 5 50V NPO 0805 Part Number 403110061800 532224282118 403110056520 403110056540 403110056530 403110056560 222286115479 532212613638 532212234098 532212613638 532212613638 532212613638 532212410685 532212234098 532212550689 532212613638 532212613638 222286115479 532212232658 532212614081 532212550306 222286115279 225201471398 532212550306 225201471398 222286115399 532212613638 532212613638 482212233575 532212614081 532212410685 532212234098 532212234098 532212613638 532212613638 532212613638 532212613638 532212613638 532212613638 225201471398 532212613638 532212613638 532212410685 532212234098 532212234098 532212550689 532212613638 532212613638 532212613638 222286115479 532212614081 532212550306 222286115279 225201471398 532212550306 225201471398 532212613638 222286115399 532212613638 482212233575 Replacement Parts Main Board Version B Pos C154 C155 C156 C157 C158 C159 C16 C160 C161 C162 C163 C164 C165 C166 C167 C168 C169 C17 C170 C171 C172 C173 C174 C175 C176 C177 C178 C179 C180 C181 C182 C183 C184 C185 C186 C187 C188 C189 C19 C190 C191 C192 C193 C194 C195 C197 C2
248. RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R645 RESISTOR 2 2 kOhm 1 0 1W 100 0805 403100222020 R571 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R652 RESISTOR 82 Ohm 1 0 1W 100PPM 0805 403100282090 R572 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 8656 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 R573 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 8657 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 R575 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R658 RESISTOR 10 Ohm 1 0 1W 100PPM 0805 403100210090 R576 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R659 RESISTOR 10 Ohm 1 0 1W 100PPM 0805 403100210090 R577 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 R660 RESISTOR 10 Ohm 1 0 1W 100PPM 0805 403100210090 R578 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 482205151001 u1 IC OPAMP LMC6081 932220497682 R579 RESISTOR 1 5 kOhm 1 0 1W 100 0805 403100215020 U11 1 932220399682 R580 RESISTOR 3 3 kOhm 1 0 1W 100PPM 0805 403100233020 0116 MAX6355TWUT T 932220433682 R581 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 0117 MAX1927REUB 932220434682 8582 RESISTOR 10kOhm 1 0 1W 100PPM 0805 532211712499 0118 MAX1927REUB 932220434682 R583 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 012 IC DIGECLIPS 10 104 932202821682 R584 RESISTOR 47 Ohm 1 0 1W 100 0805 532211712505 0122 2 5 LT1009CD 2 5 2 5V 0 2 15ppm 932207993701 R58
249. SISTOR 6 8 KOHM 1 0 1W 100PPM 0805 RESISTOR 1 5 KOHM 1 0 1W 100PPM 0805 RESISTOR 470 OHM 196 0 1W 100PPM 0805 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 680 ohm 1 0 1W 100PPM 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 330 OHM 196 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 2 2 KOHM 1 0 1W 100PPM 0805 RESISTOR 3 3 KOHM 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 1kohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 10 0 ohm 196 0 125W 100PPM 1206 Part Number 403100247030 532211712505 532211712497 403100282090 532211712505 532211712499 532211712499 403100247020 532211712505 403100282090 403100222020 532211712497 532211712497 532211712497 532211712505 403100222020 403100268020 403100222020 403100268020 403100247020 40310024702
250. SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V RELAY SMD UD2 5V FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 4 3HH 1 6A FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM41PF800S CHOKE 4 3pH 1 6 FILTER EMI BLM41PF800S FILTER EMI BLM41PF800S FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 4 3pH 1 6 FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 100nH SMD FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 4 70uH 5 LQH1N4R7J FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm CHOKE 4 70uH 5 LQH1N4R7J CHOKE 4 70uH 5 LQH1N4R7J FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm FILTER EMI BLM21A102SPT Z 1KOhm 0 2A R 0 60hm Part Number 242202508091 242203300291 242202504832 403110571100 242213207707 2422
251. T23 TRANSI HF SMD BFR93A 35mA 12V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BSR12 0 1A 15V SOT23 TRANSISTOR BSR12 0 1A 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR 513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 25 MA BFR92A 20V 50123 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR 513 03A20V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR 0 5A BC807 25 45V SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSISTOR 25 MA BFR92A 20V 50723 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR 0 5A BC807 25 45 SOT23 TRANSI LF N BCP54 1A 45V SOT223 1 33W TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BFT92 25MA 15V SOT23 TRANSISTOR 25 M
252. TOR 10 0 Ohm 196 0 125W 100PPM 1206 RESISTOR 10 0 Ohm 196 0 125W 100PPM 1206 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 RESISTOR 10 0 Ohm 196 0 125W 100PPM 1206 RESISTOR 1 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 470 Ohm 1 125W 100PPM 1206 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 5 kOhm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 15 kOhm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 1kOhm 1 0 1W 100 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 330 Ohm 1 0 1W 100PPM 0805 RESISTOR 1 kOhm 196 0 1W 100PPM 0805 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 1W 100PPM 0805 RESISTOR 47 Ohm 1 0 1W 100PPM 0805 RESISTOR 22 Ohm 1 0 1W 100PPM 0805 RESISTOR 3 3 kOhm 1 0 1W 100PPM 0805 RESISTOR 4 7 kOhm 1 0 1W 100PPM 0805 RESISTOR 100 Ohm 1 0 125W 100PPM 1206 RESISTOR 2 2 kOhm 1 0 1W 100PPM 0805 Part Number 482205110109 482205110109 482205110109 532211712505 482205110109 482205110109 482205110109 482205110109 482205110109 403100210050 403100222010 403100247010 532211712498 403100233020 403100233020 532211712498 532211712498 532211712498
253. TOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 6 3V CAPACITOR 68pF 1 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 220HF 20 10V 0810 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 15 HF 20 6 3V 6 0X3 2 MOLD CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 221 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1nF 20 50V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 1001 6 3V CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 1001 6 3V CAPACITOR 1001 6 3V CAPACITOR 220HF 20
254. Timer Counter Analyzer PM6690 FLUKE 4822 872 20306 May 2006 Fourth Edition Fluke Corporation All rights reserved Printed in Sweden Il GENERAL INFORMATION Method of Notation This manual contains directions and information that apply to the PM6690 Timer Counter Analyzer In order to simplify the references the following designation system is used throughout the manual PM6690 is abbreviated to 90 Warranty The Warranty Statement is included in the Getting Started Manual Declaration of Conformity The complete text with formal statements concerning product identification manufacturer and standards used for type testing is avail able on request Hardware Versions This Service Manual provides Source of Supply information for the Fluke Model PM6690 Timer Counter Analyzer which may con tain an OLD version of the Main CCA called Version A or a NEW version of the Main CCA called Version B Both the old and the new version of the Main CCA have the same part number All orders for the old version of the Main CCA will be filled with the new ver sion of the Main CCA When the old version of the Main CCA is returned to the factory for repair the new version of the Main CCA will be returned in place of the old version of the Main CCA if the microprocessor has to be replaced Devices with serial numbers up to and including 916779 are equipped with a Triscend microprocessor whereas devices with higher se ria
255. V above the lower limit and that the highest voltage pulse on any pin 8 of the ADCs should be at least 0 3 V below the upper limit If an interpolator has a voltage pulse outside the limits the measurement result will be wrong Figure cc shows the signals on an ADC The signal from the prescaler is connected to pin 22 sin gle ended of U11 It comes via a level converter Check the input signal to the converter at R335 PECL levels If the FPGA or a part in the interpolators has been changed or repaired a calibration of internals must be performed after wards See Chapter 7 Note The interpolator design has varied slightly in the course of time but the pulses in Figures 6 49 and 6 50 are very little affected U21 8 U22 8 U23 8 iid 1 00 1 00V M2 00us A Chi 600mV Figure 6 49 ADC 10461 behavior Time A A 10 MHz in
256. X19 There are two ground pads in the vicinity See Figure 7 5 Adjust C442 to maximum amplitude Use a screwdriver type of adjustment tool JUL J23 J26 J21 C442 GND LI GND 19 AC DC BOARD Figure 7 5 Adjusting the external reference input Power Supply 7 13 Internal Reference Oscillators Adjustment of the different timebase oscillators is described under Calibration earlier in this chapter RF Input 3 GHz Note The 8 GHz prescaler can not be adjusted m Setup Do as described under Preparations above Select default settings by keying in USER OPT Save Recall Recall Setup Default Select measurement function FREQUENCY C Set the signal generator to 1000 25 MHz with ampli tude 5 9 0 5 mV 31 5 0 5 dBm m Adjustment Connect the signal to Input C on the timer counter NOTE Before beginning any adjustments the RF input must have been in operation for at least a few minutes to let it reach normal operating temperature Turn the potentiometer on the prescaler board fully counterclockwise See Figure 7 6 Check that the timer counter stops measuring Turn the potentiometer slowly clockwise until the timer counter starts measuring Check the display of the timer counter it shall show 1000 25 MHz AC DC BOARD INITIAL SETTING 0 FULLY CGW _ 3 GHz PRESCALER MAIN INPUT AMPLIFIERS
257. X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 2096 25V X7R 0805 CAPACITOR 22uF 20 35V 0605 SMD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 10nF 20 50V X7R 0805 Part Number 532212234098 222215360478 222215364221 222215360478 222215364221 532212613638 532212613638 532212234098 532212234123 222286115109 532212232658 532212232658 222286115109 532212234123 532212234123 532212234123 532212613638 222215360229 202202900655 532212234123 202202900655 222286115339 222286115829 222291016749 532212613638 532212613638 532212411418 222286115339 532212232658 222215360229 532212410685 532212613638 532212613638 532212613638 532212613638 532212613638 222286115109 532212550306 222286115228 532212613638 222286115159 222286115159 222286115339 222286115339 532212613638 532212613638 222286115101 532212613638 532212613638 532212234098 532212613638 532212613638 222215360229 532212613638 532212613638 532212613638 532212613638 532212613638 532212234098 5322
258. a 3 3VIF BLM21A102S E 0431 E 15uF 6 3V 2 CSUSBN x64 X20 H 4 AF 0 4 2 AF O 4 4 4d 2 DF 0 31 2 WRFN RDN 4 4 2 CSGPIBN D 163 C432 C433 D 2 RESGPIBN gt gt 33pF 22PF B5 rane 5VPO gt _ _ gt 5vP0 40MHZ 3 3VRI 4 U32A 3 3VRI 4 C28 10n C434 C436 eae R544 C437 C435 R548 2 R543 22UF 35V 100 2 2UF 6 3V 91K 1 100NF 45k 15K 152 4 100NF 112 19 X61 1M 7 LVC02 J25A je R547 1 4 UTA 9 1 J 470 C438 2 DIO2 LVC74A 100NF C440 m H pios DH 3 U31A 3 3VRI L37 53 MODE 8 j 0104 F R551 5 7UH REB 2 PAGED 102 ga 13 0105 KH SWAP 103 0106 2 U32B 10PF 33K 1K 88 15 100NF ass BURST_RDN 104 g 1 007 BAT548 R549 8563 X C442 B6 BFS17 C443 C444 R554 1 R16 33 pack 105 77 0108 470 5 R555 21 aH e ER 7 4 1 amp b 6 ABUS 197 008506 T als 3 10PF PRE 2 2PF 100NF 47 47 BBUS 108 J25B R662 REST 79 ore cass 3138 R560 AND 2 65 REN Hg 1 REN J26 470 15 4 R558 9559 OM 2470 100K WR wore cue LVC74A 22K 47 SSE oon 67 R NDAC RESET NRFD 1 DAV DAV a sm 1 ae IN rear panel ONE cisi gt U38A Aj CNTRL 76 AUN DIRGPIB 2 9 AFA L 100NF DIR
259. a unit be connected to the power line and only by using a three wire line cord No other method of grounding is permitted Extension cords must always have a protective ground conductor CAUTION If a unit is moved from a cold to a warm environment condensation may cause a shock hazard Ensure therefore that the grounding requirements are strictly met WARNING Never interrupt the grounding cord Any interruption of the protective ground connection inside or outside the instrument or disconnection of the protec tive ground terminal is likely to make the instrument dangerous Operation Orientation and Cooling The instrument can be operated in any position desired Make sure that the air flow through the ventilation slots at the top and side panels is not obstructed Leave 5 centimeters 2 inches of space around the counter Fold Down Support For bench top use a fold down support is available for use underneath the counter This support can also be used as a handle to carry the instrument Rackmount Adapter 4 46500 a s 5 Fig 1 1 Dimensions for rackmounting hardware If you have ordered a 19 inch rack mount kit for your instru ment it has to be assembled after delivery of the instrument The rackmount kit consists of the following 2 brackets short left long right 4 screws 5 x 8 4 screws M6 x 8 Fig 1 2 Fitting the rack mount b
260. ance Check 2 5 RF Input Performance Check 2 7 Replacing dares PE 3 3 RF Options Performance Check 2 7 2 8 S Safety Components 6 59 Safety Inspection 6 59 6 60 Sensitivity Performance Check 2 4 SIgIials x wane seek ds 9 2 Special Parts 8 2 Standard 8 2 Surface Mounted Devices 10 2 T Test After Repair 6 59 6 60 Test Routines Built in 4 10 4 18 Tests Internal Self Tests 2 2 Keyboard ws OOO A 2 2 Short Form Specification 2 4 2 5 Timebase Calibration 7 3 Timebase Reference Standard Oscillator 6 12 Timebase Reference Circuits Troubleshooting 6 40 Trigger Indicators Performance Check 2 4 Troubleshooting 100 MHz Multiplier 6 13 6 41 External Reference Circuits 6 13 6 41 Input Amplifiers 6 8 6 36 Measuring Logic 6 55 Microprocessor amp Memories 6 43 Microprocessor Bus amp Interfaces 6 49 Oven Oscillator 6 12 6 40 Power Supply 6 32 Prescaler 6 43 Timebase Reference Circuits 6 12 6 40 TTL Logic Levels 6 4 6 32 U Utility Program 5 3 V Voltage Performance Check
261. appear some extra interrupts This is not an error condi tion 2 a R34 C Figure 6 19 Important locations on PCB 2 during startup ADDRESS 22 32 kHz 54 FLASH U17 CONTROL 3 3VD 16 32 014 z 18V LCD BUS X33 2 5 V RESET 3 3 VD U116 X29 U40 EN U39 TEMP U13 i RELAYS ETC U3 z KEYBOARD DISPLAY PCB Microprocessor memories startup Figure 6 20 Troubleshooting 6 17 Chi 200 M200ms A Ch2 1 16V OSC 32 MHz uP CLK 30 MHz FLASH PROM SDRAM FAN RESETN Figure 6 21 Startup timing processor memories fan Chi 2 007 BIE 200 __ 1 005 Ch2 1 16V PROGN INITN DONE CLOCK RESETN Figure 6 22 FPGA loading 6 18 Troubleshooting FAN RESETN Chi 200 200V 1 005 Ch2 J 116 Figure 6 23 Fan startup extended timescale 4 ON via 41 CONTRAST RESETN Chi 2 00v BIE 200 M 1 00s A Ch2 1 16V Figure 6 24 LCD control signals ocillogram 1 WU 2 00v _ 200 00 A Ch2 1 68V Figure 6 25 LCD control signals oscillogram 2 Troubleshooting 6 19 0
262. ards involved The warranty commitments are rendered void if unautho rized access to the interior of the instrument has taken place during the given warranty period CAUTION Indicates where incorrect proce dures can cause damage to or destruction of equipment or other property WARNING Indicates a potential danger that requires correct procedures or practices to prevent personal injury 1 2 Safety Instructions Symbols Shows where the protective ground terminal is con nected inside the instrument Never remove or loosen this screw Indicates that the operator should consult the manual A You can for instance find such a symbol on the front panel below the A and B inputs It points out that the damage level for the input voltage decreases from 350 V to 12 Vims When you switch the input impedance from 1 MQ to 50 Q If in Doubt about Safety Whenever you suspect that it is unsafe to use the instrument you must make it inoperative by doing the following Disconnecting the line cord Clearly marking the instrument to prevent its further op eration by unauthorized personnel For example the instrument is likely to be unsafe if it is visi bly damaged Grounding Grounding faults in the line voltage supply will make any in strument connected to it dangerous Before connecting any unit to the power line you must ensure that the protective ground functions correctly Only then can
263. at the amplitude to the divider is constant The divider scales the input signal so that it can be handled by the measuring logic on the main circuit board A detector switches off the output signal from the divider if the input level is too low for the divider to work correctly divid ers often oscillate without input signal Voltage regulator Not C Input Amplifier Anmlifier Amplifier Figure 4 6 prescaler option block diagram Test go Test Routines Built in Test Routines The test routines are those accessible via the USER OPT key Press USER OPT Test Test Mode Choose one of the five alternatives 1 All Perform the four basic tests below in sequence 2 Memory Test RAM and ROM 3 Logic Test measuring logic circuits 4 Display Test the graphic LCD display 5 Interface Test the two standard interfaces GPIB and USB Power On Tests Certain tests are automatically performed at power up Errors if any are reported on the display 4 10 Hardware Functional Description Version B The descriptions in this section apply to instru ments having a Sharp microprocessor See General Information on page III for details on relevant serial numbers etc Version B 4 11 Block Diagram Description General The PM6690 Timer Counter consists of three main units Front unit Main printed circuit board Rear panel unit
264. bration Recalls the calibration factors last stored by the user 7 8 Voltage Reference CALibration ROSCillator STARt Start Calibration Starts the calibration process after an external reference source has been connected to Input A puu M a Z DZ DDD 1 CALibration ROSCillator STORe _ lt YYYYMMDD gt Store User Calibration Ends the calibration process and stores the calibration factors using the date code YYYYMMDD that is year 4 digits month 2 digits and day 2 digits Example SEND CAL ROSC STOR 20040731 CALibration VOLTage INITialize Calibration of Reference Voltage Initializes the voltage calibration process CALibration VOLTage ANPut 1 I2 VAL umeric Value DC Voltage Calibration Calibrates a DC voltage within the range 50 V 50 V if the corresponding voltage from a voltage reference source is applied to the input that is addressed in the command Example for Input A 1 SEND CAL VOLT INP VAL 5 5 V is applied to input A before sending the command Example for Input B 2 gt CAL VOLT INP2 VAL 20 20 V is applied to input B before sending the command Note The DC voltages must be sent in a prescribed order See page 7 5 Voltage Reference 7 9 CALibration VOLTage LOAD FACTory Restore Factory Calibration Recalls the calibration factors stored by the factory before delivery or after service CALibra
265. bus A 40 MHz crystal is used for generating a local clock The USB consists of an IC It communicates with the proces sor over the 16 bit microprocessor bus A 6 MHz crystal is used for generating a local clock Rear Panel Unit The rear panel is made of aluminum A number of connectors mounted on this unit are accessible to the user see Figure 4 3 UO GPIB communication connector USB communication connector INPUTS External reference BNC External arming BNC Power supply inlet including EMI filter INPUT A INPUT B INPUT CA 10 MHz OUT EXT REF EXT ARM 20774 GPIB IEEE 488 Vrms IN 50W FREQ INPUT INPUTE A A Figure 4 3 Rear panel PM6690 Hardware Functional Description 4 9 Optional main inputs replacing corresponding front panel inputs OUTPUTS Internal reference 10 MHz BNC Prescaler Circuit Board There are several different optional prescalers available with different frequency ranges The prescaler is located on a sepa rate circuit board that is connected to the main circuit board with a PCB connector A typical prescaler consists of a limiter an amplifier a fre quency divider and a detector The limiter and the amplifier condition the input signal so th
266. can be difficult to measure the resistance in the supply con nector JI 7 on the main circuit board because charges are kept by capacitors some time after line power is removed Remove the cable from the AC DC module The resistance between 5 V and ground should be approximately 700 9 See Figure 6 55 In a timer counter with all capacitors uncharged 15 V and 15 V should be gt 1 MQ Another way to test J17 is to connect 3 DC voltages from a separate bench power supply directly to J17 suitable connec tor MOLEX 09 91 0600 See Figure 6 55 The currents drawn from the different supply voltages depend on options installed Before making this measurement you should re move any prescaler option A timer counter without options gives the following typical results 5 V 0 7A 15 0 3A 15V 0 4 The oven oscillator increases the 15 V current between 0 35 A cold and 0 1 A warm A block diagram of the secondary power supply is shown in Figure 6 54 All secondary voltages are switched off in standby mode except 12 VU for the optional oven oscillator The ON OFF circuitry controls the ON and OFF of the sec ondary voltages Its own supply voltage is always ON as long as the instrument is connected to line power See Figure 6 59 ON OFF LOGIC DUMMY Q58 U29 Q56 Q57 uPROC key 15 VD gt 049 950 x15 5 VU 0 J17 2 3 SWITCH J17 1 15VU0 15 VU J17 6 12VU U130 LINEAR FROM AC
267. ceptance test and gives a worst case figure after 30 minutes warm up time All deviations that can occur in a year are added together Resolution Test Connect the pulse generator to a power splitter Connect one side of the power splitter to Input A on the counter using a coaxial cable Connect the other side of the power splitter to Input B on the counter Settings for the pulse generator Amplitude 2 Vpp high level 2V and low level 0 V Period approx 1 us Duration approx 50 ns Rise time 2 ns Restore the timer counter s default settings and make the fol lowing changes Function Time A B Press STAT PLOT key to the right of the display Settings for INPUT A and INPUT B 50 Q input impedance MANual trigger level Performance Check Short Form Specification Test 2 5 Selected Function Action Display P F FREQ A 10 MHz 2 FREQ 10 MHz 2 FREQC 3 FREQ RATIO 1 0000000 FREQ RATIO C B 0 0000000 3 PER SINGLE A 100 ns 2 PER SINGLE B 100 ns 2 PER AVERAGE A 100 ns 2 PER AVERAGE B 100 ns 2 PULSE POS A 50 000 ns 1 PULSE NEG A 50 000 ns 1 TIME INT A to B 0 1ns puer 50 000 ns 1 RISE TIME A ae kas 30 000 ns 2 FALL TIME A 30 000 ns 2 PHASE A rel B 180 or 180 1 PHASE B rel A 180 or 180 1 PHASE A rel A 0 DUTY POS A 0
268. ces p 6 49 Measurement Logic p 6 55 Power Supply The DC voltages needed in the instrument are generated from the three main voltages of the AC DC module The instrument has only a secondary power switch i e the AC DC module is always operating if line power is applied The three output DC voltages 5 V 15 V 15 V from the module are present on the main circuit board When switched off the instrument is in the standby mode In this mode only the ON OFF circuitry and the optional oven oscillator are powered The AC DC module should not be repaired Not even the built in fuse should be replaced Built in circuits protect against external overloads so a blown fuse indicates that a se vere internal fault has occurred Replace the complete module instead blue black black brown brown AC DC MODULE CABLE ASSEMBLY DUMMY LOAD 470 PCB PIN CONNECTOR J17 1 oooooo xa 1 GND GND 5V 5V 15V Figure 6 55 Dummy load connection Test the AC DC module by measuring the three DC voltages in TP9 5 1 0 05 V TP21 15 1 V and TP26 15 1 V on the main circuit board See Figure 6 55 Note that there is a 5 trimmer on the module If the 5 V is not correct disconnect the cable to J17 on the main circuit board Put a 47 Q I W resistor on the connector according to Figure 6 55 Measure on the connector 5 1 0 05 V 15 I V and 15 1 V It
269. connection to the processor a method that only the fac tory can apply After a successful update the counter is reset if previ ous firmware is V1 01 and above The message Firm ware update complete Loader is trying to connect to the counter again is displayed on the PC monitor Confirm by pressing OK Press OK again when the message Counter found is displayed Press EXIT to leave the loader program If the counter is not reset by the Loader program turn the counter off and on when the update is complete NOTE 1 With some firmware revisions and GPIB cards the Loader gives an error message Counter I O error Loader shutting down after the successful update This is a loader fault and does not harm the upgrade process To remove the SRQ indicator on the front panel which might be present in such cases start a GPIB communi cation tool and send the command PSC 1 and run a full power cycle OFF ON NOTE 2 Some firmware revisions need a full power cycle to resume proper operation If the instrument does not measure correctly after firmware upgrade turn the in strument OFF and ON to initialize the hardware prop erly After the update enter the calibration menu password 62951413 and run Calibrate internals Utility Program Purpose This service tool is used for configuring the timer counter whenever information stored in firmware about serial number and oscillator type etc has be
270. control signal from the processor is present 7 The first 8 minutes after power up the fan will run at a fixed speed fed with 8 3 V After that the fan is temperature con trolled The processor reads the temperature from U39 via the 758 0758 3 758 2758 2258 6753 758 6755 pies Pizy 2 prey Bies BE 150 g a 9 8 ee gea x FC bus Depending on the temperature the fan is fed with a DC voltage between 8 and 13 5 V The processor uses a PWM signal that is filtered to control the fan Bl 157 A E S kad us Figure 6 5 Important power supply locations 2 7 O O 33 N hao 2 xu 6662 14444 0 25 IN 5 LC 65 z R R 5 2098 7098 C098 4 5862 98 9 1669 6658 0098 1099 66 21 x9 E 531 KS E b
271. cording to Table 2 4 Press the Trig key and enter 1 V via the keyboard by pressing the key then verify by pressing EXIT OK Check the trigger indicator according to Table 2 4 Press the Trig key and enter 0 via the keyboard then verify by pressing EXIT OK Check the trigger indica tor according to Table 2 4 Apply the signal to Input B instead Press MEAS FUNC Freq Freq A gt B Press INPUT B and select MANual trigger level and 50 input impedance Repeat the trigger level settings above to verify the three trigger indicator modes for Input B Input Controls Recall the DEFAULT settings Connect the LF synthesizer to Input A Use the same settings as in the previous test Press INPUT A and select DC and 50 Press EXIT OK Check the Vmax and Vmin voltage levels on the display according to the first row in Table 2 6 Perform the rest of the settings in sequence and read the corresponding Vmax and Vmin values Remember that all these values are approximate and serve only as indica tors of state changes Vmin Pass Fail Input A Input B Settings Vmax INPUT A DC 50 Q 950 mV 50 mV AC 450 mV 450 mV 10X 0 45 V 0 45 V 1 gt 0 45 V lt 0 45 V Table 2 6 Input controls check Connect the generator to Input B Press MEAS FUNC Freq Freq A gt B Pr
272. cription Part Number C212 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C281 CAPACITOR 100nF 10 16V 0603 403102030104 C213 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 532212410687 C282 CAPACITOR 100nF 1096 16V X7R 0603 403102030104 C214 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C283 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C215 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C284 CAPACITOR 100nF 10 16V X7R 0603 403102030104 C216 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C285 CAPACITOR 470pF 1096 50V X7R 0402 403102040471 C217 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C286 CAPACITOR 470pF 1096 50V X7R 0402 403102040471 C218 CAPACITOR 10pF 5 50V NPO 0805 222286115109 C287 CAPACITOR 470pF 1096 50V X7R 0402 403102040471 C219 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C288 CAPACITOR 100nF 10 16V 0603 403102030104 C22 CAPACITOR 27pF 596 50V NPO 0805 222286115279 C289 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C220 CAPACITOR 10pF 5 50V NPO 0805 222286115109 C29 CAPACITOR 2 20 uF 20 6 3V 3 2X1 6 MOLD 403102132280 C221 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C29 CAPACITOR 2 20 20 6 3V 3 2X1 6 MOLD 532212410685 C222 CAPACITOR 10pF 5 50V NPO 0805 222286115109 C290 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C223 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C291 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C224 CAPACITOR 10nF 20 50V X7R 0805 532212234098 C292 CAPACITOR 100nF 20 25V X7R 0805 532212613638 C225 CAPACITOR 10nF 2
273. croprocessor bus and interfaces Figure 6 87 Troubleshooting 6 51 U40 U5 U46 U9 U11 X30 X28 013 056 U39 938 037 C416 X20 034
274. ct the reference oscillator signal to Input A on the DUT Select 10 s measuring time under SETTINGS and mea sure the frequency NOTE Use a measuring time that is long enough to meet the required resolution see Table 7 1 or use statistics to find the mean value of multiple measurements Calculate the relative deviation of the internal timebase as fmeas fret fret Translate this value to an absolute deviation A of the internal 10 MHz timebase by using the expression x 10 Hz Note this value as the calibration state before adjust ment and decide if an adjustment is necessary according to the applicable criteria Stop here if an adjustment is not necessary Otherwise go on Go to the Calibration Submenu and select Timebase Frequency A MEAS User options Calibrate Timebase Calib Start Freq Calib Auto Press Calib Freq and select one of the possible frequen cies or let the counter decide on its own by accepting the preselected Auto setting Start the calibration procedure by pressing Start Calib and follow the instructions on the display You must enter a date at the end of the procedure in or der to make the result the active user calibration Measure the external reference frequency once more and calculate the deviation of the internal timebase in the same way as before the adjustment Note this value as the calibration state after
275. d Figure 6 16 The control signal U4 1 must be high The frequency is con trolled by a PWM signal from the processor After filtering the resulting DC voltage changes the capacitance of D24 A DC level between 0 V and 3 3 V at R289 should somewhere within the adjustment range give 10 000000 MHz Check the output signal and frequency at U4 6 If the standard oscillator is repaired a new calibration must be performed See Chapter 7 A new factory calibration by means of the utility program should also be performed Optional Oven Oscillator See Figure 6 14 Figure 6 15 and Figure 6 16 The oven oscillator is a self contained unit enclosed in a metal box and soldered to the main circuit board It cannot be repaired and must be replaced with a new oscillator if it is faulty Let the oven oscillator warm up 10 minutes before starting measurements The 12 V supply voltage can be checked at X17 The oven oscillator should be powered also in standby mode The oven oscillator outputs a 10 MHz signal if powered It should be 1 3 V measured at R282 If not selected a gate U4 stops the signal the control signal U4 9 is then low The frequency is controlled by a DAC 1 5 Its reference voltage is derived from the oscillator approximately 5 V C174 The polarity of the reference voltage is reversed in an op amp U6 and the voltage at U5 1 should be 5 V The out put voltage from the DAC should be between 0 and mea sured
276. d blink The gate indicator on the front panel should also blink and the display should show the measurement result In this setting the S R flip flop U12 is used Check that the measurement signal is present on pins 30 and 31 differential input on the FPGA U11 Move the 10 MHz sinewave signal to input B Change the measurement function to Frequency B Check that the mea surement signal is present on pins 20 and 21 differential in put on the FPGA 011 The trigger level LED and the gate indicator LED should blink and the display should show the measurement result Move the 10 MHz sinewave signal back to input A Change the measurement function to Period Single A Now the S R flip flop should not be used check the control signal at R623 it should be 1 6 V on is 1 0 V Select statistics The std de viation should be less than 100 ps Change the measurement function to Time Interval A A Se lect Statistics Mode Check that the standard deviation is less than 100 ps Measure at pin 8 of the ADCs U23 U22 U21 and U20 Two types are current ADC10461 and ADC1061 See Figure 6 49 for a typical timing diagram with ADC10461 Figure 6 50 shows an example with ADC1061 Check the upper TP3 and lower TP4 voltage limits of the ADCs They should be approximately 3 5 3 6 V and 1 1 1 4 V The important thing is that the lowest voltage pulse on any Troubleshooting 6 27 pin 8 of the ADCs U23 U22 U21 U20 should be at least 0 2
277. d stored data calibration data etc At power up the code is copied from the flash to the SDRAM for faster execu tion Buffers isolate the memory part of the microprocessor bus from the rest of the bus Outside the buffers are the FPGA the GPIB interface and the USB interface The processor has a JTAG interface with a connector on the circuit board A reset IC monitors the two main logic supply voltages 3 3 V and 1 8 V Ifa supply voltage fails the processor will be reset Two other buses are also used an SPI bus and an bus The SPI bus is an output only bus and the processor controls the 100 MHz PLL the trigger level DACs and the DAC for the optional oven oscillator The bus is bidirectional and used for communication with the temperature measurement IC the display board keyboard LCD the prescaler optional and the relays and filters in the input amplifier The temperature reading over the bus is used for control ling the fan speed A PWM output is utilized The signal is fil tered and the resulting DC voltage controls the fan Another PWM output is used for controlling the frequency of the standard crystal oscillator The LCD controller is a peripheral inside the processor This controller sends signals and data to the driver circuits in the LCD on the display board The processor also controls the OFF switch Only a signal from the processor can switch off the power The OFF button on the fron
278. direct the signal to the two compara tors The following combinations are possible IN A COMP A and IN B to COMP B e IN Ato both COMP A and COMP B IN B to both COMP A and COMP B m Comparator The comparator converts the analog signal to a binary logic signal with ECL levels 0 9 V and 1 7 V The trigger point is set by a voltage from the trigger level circuitry Temperature compensated circuitry generates the voltages that control the hysteresis of the comparator A trimmer potentiometer adjusts the hysteresis window m Trigger Level Generation Two 12 bit DACs ina single IC generate the two trigger levels for Channel A resp Channel B A 2 5 DC reference sup plies the reference voltage to the DACs The DACs are con trolled by the processor over the SPI bus The 5 V dynamic range at the BNC of the input amplifier is converted to ap proximately 2 1 V at the comparator This range must be covered by the DAC The voltage step from the DAC is ap proximately 1 2 mV corresponding to 2 9 mV per step at the BNC Closed Case Calibration CCC is used for adjusting the trigger levels A known reference level is applied to the BNC and the processor finds out the appropriate setting of the DAC to match the reference level m Logic Level Conversion The signals from the comparators must be converted from ECL levels to LVPECL levels There are three converter cir cuits One for Channel one for Channel and one f
279. e Connect the signal to Input B select Period Single B and repeat the tests above RF Options Input C Check To verify the specification of the different RF prescalers Input C use the following basic test setup Connect the output of a signal generator covering the specified frequency range to the RF input of the counter Connect the 10 MHz REF OUT from the generator to the EXT REF IN on the rear panel of the counter Choose Meas Ref from the SETTINGS menu and select External Choose Freq C from the MEAS FUNC menu Generate a sine wave in accordance with the tables Verify that the counter is counting correctly The last digits will be unstable Frequency Amplitude P F MHz mVRMS dBm 100 300 20 21 300 2500 10 27 2500 2700 20 21 2700 3000 40 15 Table 2 9 RF input sensitivity 3 GHz Option Frequency Amplitude P F MHz mVRMS dBm 300 500 20 21 500 3000 10 27 3000 4500 20 21 4500 6000 40 15 6000 8000 80 9 Table 2 10 RF input sensitivity 8 GHz Option Performance Check Check of HOLD OFF Function 2 7 This page is intentionally left blank 2 8 Performance Check RF Options Chapter 3 Disassembly The terms in the following figure are used in all descriptions in this manual AAA
280. e Calibration Ap ply a 10 MHz reference signal to Input A The processor will find the correct PWM signal to make the internal reference frequency equal to the external reference frequency The optional oven controlled oscillator is a complete oscilla tor in a small hermetic metal box An internal accurate DC voltage is available for use as a reference for a 12 bit DAC The filtered output voltage from the DAC sets the frequency of the oven oscillator The processor controls the DAC via the SPI bus The same Closed Case Calibration as for the stan dard oscillator is used The oven oscillator is kept warm if the line power is connected to the timer counter even if it is switched off in standby mode CROSSOVER BUFFER SWITCH LVL SHIFT ECL e LVPECL ECL SIR FLIP FLOP gt IM LVL SHIFT COMP TRGLVLA 21901 ONIYNSVAW OL TRGLVLB 9 Figure 4 2 Input amplifier block diagram Hardware Functional Description 4 7 The 10 MHz reference signal is multiplied in a PLL to 100 MHz The 100 MHz signal is used in the measuring logic as a reference The processor controls the PLL IC with the SPI bus A 100 MHz LC oscillator is used as the controlled ele ment where part of the C is a variable capacitance diode Its capacitance is controlled with a DC voltage from the PLL IC thus changing the frequency The 10 MHz reference signal is applied to the PLL IC as its reference and
281. e I Os use 3 3 V supply volt age A separate memory bus communicates with a 16 bit 8 MByte flash memory and a 32 bit 32 MByte SDRAM The flash memory contains the program data for loading the FPGA and stored data calibration data etc At power up the code is copied from the flash to the SDRAM It is run from the SDRAM for faster execution The processor has a JTAG interface with a connector on the circuit board Areset IC monitors the three main logic supply voltages 3 3 V 2 5 V and 1 8 V If a supply voltage fails the processor will be reset The regular 16 bit microprocessor bus is used for controlling the FPGA the GPIB interface and the USB interface A sepa rate 32 bit bus is used for fetching measurement data from the measuring logic Two other buses are also used an SPI bus and an I C bus The SPI bus is an output only bus and the processor controls the 100 MHz PLL the trigger level DACs and the DAC for the optional oven oscillator The bus is bidirectional and used for communication with the temperature measurement IC the display board keyboard LCD the prescaler optional and the relays and filters in the input amplifier The temperature reading over the bus is used for con trolling the fan speed APWM output is utilized The signal is filtered and the resulting DC voltage controls the fan Another PWM output is used for controlling the frequency of the standard crystal oscillator The L
282. e with logic levels repro ducing the timing characteristics of the input signal Check the signal at U32 11 U32 generates a short pulse approxi mately 40 ns for each input cycle check at U32 9 These pulses generate a broad spectrum of harmonics and the following high Q 10 MHz crystal filter allows only a 10 MHz sinewave to pass Measure at X19 Note that the trimmer C442 1s used for maximizing the amplitude at X19 Check that the amplitude is not less than 1 If external reference is not selected the gate U33 stops the 10 MHz signal The control signal on U33 1 1s then low 100 MHz Multiplier See Figure 6 14 and Figure 6 16 100 MHz is used in the measuring logic mainly as a reference clock but also for other purposes A PLL is used for multi plying the 10 MHz reference to 100 MHz On power up the processor sets up the PLL IC U9 via the SPI bus An output signal PLL LOCK tells the processor if the loop is locked high level A VCO consisting of an inverter U47 and an LC circuit in the feedback loop is controlled by the PLL IC The DC voltage from U9 2 1s filtered and controls a capaci tance diode The VCO frequency changes with the capaci tance The loop can handle the switching of 10 MHz refer ence from internal to external and vice versa There is no need for a new setup If external reference is selected and no such signal is connected to the instrument the PLL will be un INT REF ON OFF FPGA LOCK
283. en lost for example after re placement of the main PCB It is also used for defining a new factory calibration Availability and System Requirements The utility program can be obtained from the manufacturer or your local service organization free of charge and can be run on any PC with Windows 2K or XP equipped with a GPIB in terface from National Instruments It is distributed as a com pressed file called PM6690 zip containing all the necessary installation and data files including a readme txt file with ad ditional information Installation Unpack the zip file in an empty directory by using Winzip Delete the original zip file if you want to save memory space Run the setup exe program and follow the on screen in structions Running the Application After installation you can start the utility application by run ning the program PM6690 Utility exe from the chosen direc tory Refer to the readme txt file for closer information on top ics not covered by the application user interface Fan Replacement This instrument is equipped with a speed controlled fan as standard to sustain the specified operating temperature range If your instrument is operating in a 24 h day system you should replace the fan every second year to maintain maxi mum reliability For part time applications and where low am bient temperatures prevail an extended service interval is ac ceptable Follow the instructions on page 3 3
284. ended of U11 It comes via a level converter Check the input signal to the converter at R335 PECL levels If the FPGA or a part in the interpolators has been changed or repaired a calibration of internals must be performed after wards See Chapter 7 4 U20 8 MX pres edt np U21 8 i 1 ok mmt 808 A mm n 4 1 022 8 I 0238 tri toro su a ei Chil 1 00 Figure 6 100 ADC 10461 behavior Time A A Smart 10 MHz in block measurement Figure 6 99 Important locations for the measuring logic 6 56 Troubleshooting chit 87007 ost uem chil 7007 Bich 2 00 V _ B Ir 015 A Chi T 680mV Figure 6 102 Close up of error pulse and S H output 13 3 V 1 176 da 200V 1885007
285. equately ac curate DVM for verification Note In contrast to a DVM the counter timer has a wide bandwidth input and the voltage calculation principle is based on peak to peak measurements rather than mean value or RMS measurements This means that HF noise that is often present at the output of standard calibrators and power supplies must be filtered out when the test voltages are applied to the counter in put Always use shielded test leads that are as short as possible Work Instructions Arrange your test setup according to the outline given above Note Both Input A and Input B should be calibrated If you want a traceability record you should apply a num ber of positive and negative DC voltages covering the dynamic range and write down the deviations Use the following list 50 V 20 V 5 V 2 V 0 5 V 0 V 0 5 V 2 V 5 V 20 V 50 V Key in the following sequence on the DUT USER OPT Calibrate Enter Password if enabled Voltage Start Calib Follow the step by step instructions on the display You must enter a date at the end of the procedure in or der to make the result the active user calibration If you want a traceability record verify the calibra tion adjustment procedure by applying the same list of voltages as above and write down the deviations Fill out the calibration protocol if required m Voltage Calibration via the GPIB or the USB The followin
286. ess INPUT and select DC and 50 2 Press EXIT OK Check the Vmax and Vmin voltage levels on the display according to the first row in Table 2 6 Perform the rest of the settings in sequence and read the corresponding Vinax and Vinin values Reference Oscillators X tal oscillators are affected by a number of external condi tions like ambient temperature and supply voltage Aging is also an important factor Therefore it is hard to give limits for the allowed frequency deviation The user himself must de cide the limits depending on his application and recalibrate the oscillator accordingly To check the accuracy of the oscillator you must have a cali brated reference signal that 1s at least five times more stable than the oscillator that you are testing See Table 2 7 and the list of test equipment on page 2 2 If you use a non 10 MHz reference you can use the mathematics in the timer counter to multiply the reading Recall the DEFAULT settings See page 2 2 Connect the reference to input A Check the readout against the accuracy requirements of your application m Acceptance Test Oscillator Frequency Readout Suitable P F Reference Standard PM6690 1 10 00000000 MHz 150 Hz 908 OCXO PM6690 _5_ 10 00000000 MHz 1 Hz 909 OCXO 10 00000000 MHz 0 25 Hz 909 PM6690 6 Table 2 7 Acceptance test for oscillators Table 2 7 can serve as an ac
287. et Re set flip flop to make one channel measurements with variable hysteresis possible There is also a converter for the signal AC DC IMP COUPL LIMITER CONV LP FILTER AC DC LIMITER IMP LP FILTER COUPL CONV OPTIONAL PRESCALER BUFFER from an optional prescaler It has PECL levels 4 1 and 3 4 V that are converted to LVTTL levels 2 4 V and 0 V Oscillator Circuits The processor has an 11 2896 MHz crystal An internal PLL in the processor uses the signal to make the internal processor clock approximately 50 8 MHz The USB IC has a 6 MHz crystal to make an internal clock and the GPIB IC has a 40 MHz crystal to make an internal clock The measurement reference oscillator timebase for the timer counter is a 10 MHz crystal oscillator or an optional oven controlled crystal oscillator OCXO Only one of these is mounted The user can also select an external reference sig nal connected to the External Reference Input BNC on the rear panel The standard oscillator consists of an inverter and a crystal The processor controls the frequency of the oscillator with a PWM signal The PWM signal is filtered to a DC level that controls the capacitance of a capacitance diode The varying capacitance changes the frequency of the oscillator The stan dard oscillator is adjusted with Closed Case Calibration Ap ply a 10 MHz reference signal to Input A The
288. ferential input on the FPGA U11 Move the 10 MHz sinewave signal to input B Change the measurement function to Frequency B Check that the mea surement signal is present on pins 20 and 21 differential in put on the FPGA 011 The trigger level LED and the gate indicator LED should blink and the display should show the measurement result Troubleshooting 6 55 Move the 10 MHz sinewave signal back to input A Change the measurement function to Period Single A Now the S R flip flop should not be used check the control signal at R623 it should be 1 6 V on is 1 0 V Select statistics The std de viation should be less than 100 ps Change the measurement function to Time Interval A A Se lect Statistics Mode Check that the standard deviation is less than 100 ps Measure at pin 8 ofthe ADCs U23 U22 U21 and U20 See Figure 6 100 for a typical timing diagram Check the upper TP3 and lower TP4 voltage limits of the ADCs They should be approximately 3 5 3 6 V and 1 0 1 4 V The important thing is that the lowest voltage pulse on any pin 8 of the ADCs U23 U22 U21 U20 should be at least 0 2 V above the lower limit and that the highest voltage pulse on any pin 8 of the ADCs should be at least 0 3 V below the upper limit If an interpolator has a voltage pulse outside the limits the measurement result will be wrong Figure 6 101 shows the signals on an ADC The signal from the prescaler is connected to pin 22 sin gle
289. ft blank 6 60 Safety Inspection and Test After Repair Chapter 7 Calibration Adjustments Calibration To maintain the performance of the timer counter we recom mend that you calibrate the timebase of your instrument every year or more often if you require greater timebase accuracy If your applications utilize the voltage measurement capabili ties of this counter series you should also calibrate the voltage ranges with a good calibrator Calibration should be performed with traceable references and instruments at a certified calibration laboratory Contact your local service center for information on calibration facili ties in your neighborhood As both timebase and voltage calibration are closed case menu controlled procedures that require no manual adjust ments on the DUT you can perform the task on your own without infringing the safety regulations provided you pos sess the required skill and have access to the necessary cali bration equipment To know the present status of your instrument test your coun ter from time to time The test can be made according to the in formation in Chapter 2 Performance Check General Principles The inherent meaning of calibration is to measure and record the deviation of a parameter from a known reference Data from subsequent calibrations under similar ambient condi tions form the calibration history from which you can draw conclusions regarding aging characteristics
290. g DC voltages should be applied to the timer counter in this order 50 20 5 2 0 5 0 0 5 2 5 20 50 V first to Input A 1 and then to Input B 2 If you cannot generate the exact voltage a voltage in the vi cinity of the required voltage can be used but the value must be sent in the bus command two values between 50 and 5 V seven values between 5 V and 5 V and two values be tween 5 V and 50 V One value should be near zero Always end the commands with the Operation Complete Query OPC Use the following command sequence and apply the correct DC voltage to the specified input before each command CAL VOLT INIT OPC CAL VOLT INPI VAL 50 0000 CAL VOLT INP2 VAL 50 0000 OPC CAL VOLT INPI VAL 20 0000 OPC CAL VOLT INP2 VAL 20 0000 OPC CAL VOLT INPI VAL 50 0000 OPC CAL VOLT INP2 VAL 50 0000 OPC SYST ERR check for errors CAL VOLT STOR yyyymmdd enter calibration date Voltage Reference 7 5 Calibration Subsystem Command Reference CALibration DELays INITialize STARt STORe ROSCillator FREQuency lt Numeric Value AUTO Boolean INITialize LOAD FACTory USER STARt STORe lt YYYYMMDD gt VOLTage INITialize INPut1 Numeric Value INPut2 Numeric Value LOAD FACTory USER STORe lt YYYYMMDD gt 7 6 Voltage Reference CALibration DELays INITialize Calibration of Internal Delays
291. gh your local service organization Timebase reference oscillators except those based on standard crystals cannot be repaired in the field but are replaced by means of a factory exchange procedure The same repair method applies to the prescaler options 22 24 25 20 17 34 19 inside 13 Item 13 14 17 20 18 22 24 25 28 19 27 Figure 8 1 8 1 8 1 8 1 8 1 8 1 8 1 8 1 8 1 8 1 8 2 8 2 8 2 Description Washer 3 2 ST FZ Screw MRT 3x6 Case feet complete kit Cover assembly Rear foot Spring washer M4 KBA 4 3 Screw MRT 4x16 Stand up bracket Plug grey decorative M5 Shielding strip Profile support Main board Shield main board Toroid core Washer 4x10x2 PA6 6 Screw RTK ST3 5x10 Distance nut M3x12 Washer 3 2 ST FZ Screw MRT 3x6 Screw MFT TT 4x12 Power Module Screw MRT TT 4x16 Cable assembly power supply Distance nut M3x14 Shield power supply Screw M3x12 Profile support Warning label high voltage Shielding strip USB Connector BNC Part number 252261024004 482250211658 403110066480 403110066440 532246241719 252261024006 532250221491 403110048770 403110502860 403110055450 403110053200 403110066470 403110065990 532252610545 403110049600 252220207024 403110059470 252261024004 482250211658 532250213553 403110066170 532250213552 403110066150 403110048880 403110066430 532250221642 403110053210 403111645530 403110055470 5322267
292. gt gt 2 MAX5156 455616320 TUTTO ARA gt gt gt gt 90 9 9 9 455 16320 Bg Schematic Diagrams 9 7 This page is intentionally left blank 9 8 Schematic Diagrams CPU Memories and Parts of the Counter Circuit PCB 1 sheet 1 7
293. gure 6 53 6 30 Troubleshooting Version B The descriptions in this section apply to instru ments having a Sharp microprocessor See General Information on page III for details on relevant serial numbers etc Version B 6 31 Troubleshooting General The 90 is a highly integrated Timer Counter in which a dedi cated FPGA counter circuit handles the signal processing and a microcontroller does the postprocessing and supervising jobs A number of additional functional units support these basic tasks for instance power supply reference oscillator wideband input amplifiers comparators memory RAM amp ROM digital analog converters etc The units are treated from a troubleshooting point of view in this chapter which means that units described earlier should be considered faultless before troubleshooting on units de scribed later WARNING Live parts and accessible termi nals which can be dangerous to life are always exposed inside the unit when it is connected to the line power Use extreme caution when handling testing or adjust ing the counter Where to Start After reading the safety instructions continue with this chapter for troubleshooting and repair instructions When you have fixed the instrument always do the Safety Inspection and Test after Repair as described later in this Chapter Then Positive Negative CMOS TTL ECL ECL Supply voltage 45V 5V 45V 45V Signal
294. h a 32 bit ARM720T core It is housed in an 013 together with peripheral units like SRAM timers bus interface SPI bus interface and LCD controller The 32 bit microprocessor bus is connected to one 16 bit Flash PROM U17 and two 16 bit SDRAMs U15 amp U16 The two SDRAMs are organized as one 32 bit wide memory The microprocessor bus is also via bidirectional buffers con nected to an FPGA a USB IC and a GPIB IC A reset IC U116 monitors 3 3 VD and 1 8 V The reset signal is active low and is kept low for approximately 160 to 180 ms after the voltages have settled and been approved Measure at X33 The ramp up time for 3 3 VD is approxi mately 3 ms The processor has an internal linear regulator that generates the core voltage 1 8 V from the 3 3 VD I O voltage Check 1 8 V at X66 The rising edge of the reset signal marks the start of the boot sequence All I Os on the processor are set to inputs The 11 2896 MHz oscillator will start running check at R358 An internal PLL generates 1 88 MHz reset value as micro processor clock check at X29 The processor will start read ing in the Flash PROM The initializing of the processor and the peripherals will start The I Os will be set up the processor clock will be set to 50 8 MHz check at X29 The SDRAMs will start and the code is copied from the Flash PROM to the SDRAMs From now on the code is executed from the SDRAMs Then all the other subsystem
295. hm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 000 ohm 0 1W 100 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 1 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 120 Kohm 1 125W 100PPM 1206 RESISTOR 680 kohm 1 125W 100PPM 1206 RESISTOR 220 kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 330 OHM 1 0 1W 100 0805 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 680 kohm 1 125W 100PPM 1206 RESISTOR 10 MOHM 10 0 25W RC 01 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 SENSOR TEMP KTY82 120 RESISTOR 3 30 ohm 1 125W 100PPM 1206 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 47 KOHM 1 0 1W 100PPM 0805 RESISTOR 470 kohm 1 125W 100PPM 1206 RESISTOR 10kohm 1 0 1W 100PPM 0805 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 1 00Mohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 1W 100PPM 0805 RESISTOR 3 30 ohm 1 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 82 OHM 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 68 OHM 1 0 1W 100PPM 0805 RESISTOR 4 7 KOHM 1 0
296. hooting 6 53 DATA 410 Figure 6 93 SPI bus activity oven directly after power up DATA ca III j CLOCK CLOCK DATA AL LE _ bininin Figure 6 94 SPI bus activity PLL directly after power up Figure 6 95 SPI bus activity PLL first transfer close up 6 54 Troubleshooting DATA ___ CLOCK Figure 6 96 SPI bus activity trglvl SDA HIGH TEMP SDA LOW TEMP SCL A 5 4 4 Chil 2 007 200 40 0 Chl 680mV Figure 6 97 bus activity reading the temperature m The Bus in the 90 The processor is the Master on the bus Slaves on the bus are The digital I O IC 040 with address 20hex It controls the relays and filters in the input amplifiers The temperature measuring 039 with address 48hex The digital I O IC U3 with address 21hex It switches the LCD display on after power on initialization it scans the keyboard on the display circuit board The bus is connected to the prescaler connector J15 for future use See Figure 6 97 and Figure 6 98 Measuring Logic The measurements are made in the FPGA Only four interpolators are external to the FPGA They increase the ba s
297. ic Microcomputer circuitry GPIB interface USB interface External reference input External arming input The rear panel unit is made of aluminum with a number of mounted connectors a fan and a power line inlet with filter Most connectors are soldered directly to the main board NOTE Schematic diagrams in this chapter are simplified For complete information see Chapter 9 ON OFF FLASH 8 SDRAM 32 MB MICROPROCESSOR ARM 7 STD OSC SPI OPT OSC gt OPTION EXTREF IN INTERPOLATORS 4X EXT CTRL IN Figure 4 7 Block diagram of the 90 INT REF OUT REAR PANEL CONNECTORS Block Diagram Description 4 13 Hardware Functional Description Front Unit The front unit consists of a front piece in molded aluminum a silicon rubber keypad with conducting contact surfaces a graphic LCD with LED backlight and a PCB having etched gold plated keyboard contacts and a dedicated LCD power supply Display The display isa 320 97 pixels graphical LCD with LED backlight The LCD controller is part of the processor and it sends data and control signals to the drivers in the LCD mod ule Display ON is controlled via the bus and the keyboard IC The LCD voltages are generated by a DC DC converter Five different voltages are generated A control signal f
298. ic measurement resolution from 10 ns 100 MHz measure ment clock to less than 100 ps Different combinations of interpolators are used for different measurement functions two three or four in conjunction The input signals come from the input amplifiers A B and SR are differential LVPECL in Figure 6 98 bus activity depressing the EXIT key puts C the prescaler input is a single ended LVTTL input The measuring logic also provides three LEDs on the front panel with control signals The interpolator transforms a pulse width between 20 and 33 ns to a voltage This voltage is read by an ADC The interpolator is calibrated by reference pulses having a width of 20 and 30 ns The measurement pulse varies between 22 and 32 ns typically The ADC has two reference voltages the lower limit and the upper limit The interpolated voltage must never fall outside these limits Select the default setting from the front panel Apply a 10 MHz sinewave signal stable low jitter signal to input A The signal should be found at the pins of the FPGA Check that the measurement signal is present on pins 10 and 11 dif ferential input on the FPGA U11 The trigger indicator LED A on the front panel should blink The gate indicator on the front panel should also blink and the display should show the measurement result In this setting the S R flip flop U12 is used Check that the measurement signal is present on pins 45 and 46 dif
299. ions are possible IN A COMP A and IN B to COMP B e IN Ato both COMP A and COMP B IN B to both COMP A and COMP B m Comparator The comparator converts the analog signal to a binary logic signal with ECL levels 0 9 V and 1 7 V The trigger point is set by a voltage from the trigger level circuitry Tempera ture compensated circuitry generates the voltages that control the hysteresis of the comparator A trimmer potentiometer ad justs the hysteresis window m Trigger Level Generation Two 12 bit DACs ina single IC generate the two trigger levels for Channel A resp Channel B A 2 5 DC reference sup plies the reference voltage to the DACs The DACs are con trolled by the processor over the SPI bus The 5 V dynamic range at the BNC of the input amplifier is converted to ap proximately 2 1 V at the comparator This range must be covered by the DAC The voltage step from the DAC is ap proximately 1 2 mV corresponding to 2 9 mV per step at the BNC Closed Case Calibration CCC is used for adjusting the trigger levels A known reference level is applied to the BNC and the processor finds out the appropriate setting of the DAC to match the reference level m Logic Level Conversion The signals from the comparators must be converted from ECL levels to LVPECL levels There are three converter cir cuits One for Channel one for Channel and one for the Set Reset channel The two main channels are fed to a S
300. l RASS R454 Em Ed M N 2 Sa R473 EST E ES J RB sila 5 a msl L18 BE co 5422 TI Ri 5 5 1672 LU 55 5 E GE E 825 GD 1 ES NI la i T 23 409
301. l numbers have a Sharp microprocessor Both are based on an ARM7 core and from the operator s point of view the behavior is not affected However essential parts of the main PCB differ and the corresponding sections of the service manual are consequently af fected Even though large parts of the hardware are common to both versions we have preferred to divide the pertinent chapters into separate sections where certain parts are repeated all in order to improve legibility and simplify troubleshooting Version A refers to devices equipped with the Triscend microprocessor Version B refers to devices equipped with the Sharp microprocessor The chapters that need special attention are Chapter 4 Circuit Descriptions Chapter 6 Repair Chapter 8 Replacement Parts Chapter 9 Schematic Diagrams m Firmware Compatibility Despite the relatively large hardware differences we have managed to integrate the firmware so that future upgrades can be applied to both versions by means of the same hex file Thus there is no need to check the serial number or else find out which processor is inside the cover Just proceed according to the instructions given in Chapter 5 Corrective amp Preventive Maintenance This page is intentionally left blank IV Contents GENERAL INFORMATION II 5 Corrective amp Preventive Maintenance 5 2 1 Safety Instructions ae Cautionand Warning
302. larm limit USER OPT User options Menu for Calibration Memory Management Interface etc CANCEL Menu disappears HOLD RUN Hold At upper right corner HOLD RUN Hold disappears MEAS FUNC Measure function Menu for selecting measurement function gt Period Cursor position marked by text inversion ENTER Single A EXIT OK Menu disappears Period Single A at up per left corner STAT PLOT Period Single A Aux parameters Max MEAN Min P P Adev Std VALUE Stat parameters dis appear Table 2 3 Keyboard test Performance Check Front Panel Controls 2 3 Short Form Specification Test Sensitivity and Frequency Range Recall the DEFAULT settings Press INPUT A Select 50 Q input impedance 1x attenuation MANual trigger and Trigger level 0 V Connect a signal from a HF generator to a BNC power splitter Connect the power splitter to Input A of your counter and an oscilloscope Set the input impedance to 50 on the oscilloscope Adjust the amplitude according to the following table Read the level on the oscilloscope The timer counter should display the correct frequency Connect the signal to Input B Press INPUT B Select 50 Q input impedance 1x attenuation MANual trigger and Trigger level 0 V Press MEAS FUNC Freq Freq gt B Repeat the measurements above for Input B Frequency Level Pass Fail
303. ld Off Hold Off State OFF Hold Off Time 200 us Time Out Time Out State OFF Time Out Time 100 ms Statistics Statistics OFF No of Samples 100 No of Bins 20 Pacing State OFF Pacing Time 20 ms Mathematics Mathematics OFF Math Constants K 1 L 0 M 1 Limits Limit State OFF Limit Mode ABOVE Lower Limit 0 Upper Limit 0 Burst Sync Delay 200 us Start Delay 200 us Meas Time 200 us Freq Limit 300 MHz Miscellaneous Function FREQA Meas Time 200 ms Smart Time Interval OFF Auto Trig Low Freq 100 Hz Timebase Reference INT Table 2 2 Default settings for functions and parameters KEY S DISPLAY NOTES P F STANDBY Off Red standby LED On Key common to ON ON Backlight On Red standby LED Off Key common to STANDBY INPUT A Input A Menu for setting Slope Coupling Impedance etc Man Trig xx mV Trig Trig xx mV Menu for entering nu meric values 0 123V Trig 0 123 V lt 5 times Trig V 4 567 Trig 4 567 V lt 5 times Trig V 8 9 Trig 8 9 V Trig 8 9 V mV Trig 8 9 mV V Trig 8 9 V AUTOSET Menu disappears INPUT B Input B Menu for setting Slope Coupling Impedance etc SETTINGS Settings Menu for setting Meas Time Hold Off Ref Source etc ENTER Meas Time 200 ms A Meas Time 500 ms Meas Time 200 ms EXIT OK Settings Menu for setting Meas Time Hold Off Ref Source etc EXIT OK Menu disappears MATH LIM Math Limit Menu for selecting post processing for mula and a
304. n strument adapts automatically to the applied voltage Basic Functional Units These are the units that are described in this chapter with ref erence to the page where the section starts Power Supply p 6 4 Input Amplifiers p 6 8 Timebase Reference Circuits 6 12 Prescalers p 6 15 Microprocessor amp Memories p 6 15 Microprocessor Bus amp Interfaces p 6 21 Measurement Logic p 6 27 Power Supply The DC voltages needed in the instrument are generated from the three main voltages of the AC DC module The instrument has only a secondary power switch i e the AC DC module is always operating if line power is applied The three output DC voltages 5 V 15 V 15 V from the module are present on the main circuit board When switched off the instrument is in the standby mode In this mode only the ON OFF circuitry and the optional oven oscillator are powered The AC DC module should not be repaired Not even the built in fuse should be replaced Built in circuits protect against external overloads so a blown fuse indicates that a se vere internal fault has occurred Replace the complete module instead black black brown brown red blue AC DC MODULE CABLE ASSEMBLY DUMMY LOAD 470 PCB PIN CONNECTOR J17 SLT Lud c O5 1 X26 XIL 15V GND GND 5V 5V 15V LI Figure 6 2 Dummy load connection Test the AC DC module by measuring the three DC voltages in
305. n the processor generates the control signals for the LCD See Figure 6 24 to Figure 6 29 Note the different timing for the signals The bus is used for switching the LCD on The ON signal can be checked at R34 on the display board It should be high The LCD voltages must also be switched on It is done by a control signal from the processor Check the signal at R33 on the dis play board It should be high Negative pulses on this signal are used for adjusting the contrast of the LCD i e the LCD voltages The range is 14 9 V to 17 5 V measured at X1 on the display board Set the contrast so X1 is 16 2 V Check the LCD voltages at X2 14 7 V X3 13 3 V X4 2 9 V and X5 1 5 V See Figure 6 19 The FPGA 011 has to be programmed The bus is used for controlling the loading of the FPGA the pins PROGN U40 9 INITN U40 7 and DONE U40 8 are used The clock U11 155 and data U11 153 are controlled by the Troubleshooting 6 15 Figure 6 18 Important locations on PCB 1 during startup processor See Figure 6 22 The loading starts when PROGN is set low The FPGA responds with a negative pulse on INITN and setting DONE low After loading 1442016 bits which takes approximately 2 2 s the FPGA sets DONE high if the loading was successful If an error is detected INITN is
306. ng the counter Where to Start After reading the safety instructions continue with this chapter for troubleshooting and repair instructions When you have fixed the instrument always do the Safety Inspection and Test after Repair as described later in this Chapter Then Positive Negative CMOS TTL ECL ECL Supply voltage 45V 5V 45V 45V Signal ground OV OV Input voltage High 243 9 V gt LIV gt gt 42V Low VIL lt 3 5 lt 1 5 lt V lt 0 8 Output voltage High VOH gt 4 V gt 1V gt 4 9 V gt 2 7 V Low VOL lt 43 3V 17V lt 0 05 V lt 0 4 V Bias ref voltage 37 V 13V VBB Table 6 1 Logic levels 6 4 Troubleshooting do the checks in Chapter 2 Performance Check Recalibrate if required by following the adjustment instructions in Chapter 7 Calibration Adjustments Logic Levels The 90 contains logic of different families The levels of the standard families are listed in Table 6 1 In addition to these families there is also low level logic requiring lower supply voltages e g 3 3 V 2 5 V and 1 8 V Required Test Equipment To be able to test the instrument properly using this manual you will need the equipment listed in Table 2 1 The list con tains the critical parameter specifications Operating Conditions Power voltage must be between 90 Vac and 260 Vac The i
307. ns You are free to choose other equipment as long as its performance is adequate for the purpose A suitable reference oscillator can be derived from a number of sources the specifications of which determine the type of DUT timebase option that can be calibrated The table suggests a number of possible combinations Re member this rule of thumb the reference should be at least five times better than the DUT for a reliable calibration result DUT Option Reference Oscillator Standard PM6690 _5_ PM6690 _5_ 909 PM6690 _6_ 909 Table 7 2 Reference Oscillator requirements Work Instructions Determine the minimum requirements of the reference oscillator and make a signal meeting these requirements available at your test site NOTE You can use a number of different calibration fre quencies for the DUT 1 MHz 1 544 MHz 2 048 MHz 5 MHz and 10 MHz Place the DUT in its calibration environment preferably at an ambient temperature of 23 2 C and power it up 7 4 Frequency Reference Frequency A MEAS User options Calibrate Timebase CalibFreq 1 544MHz 1MHz 2 048MHz 5 2 10MHz Recall the default settings by keying in the following se quence USER gt Save Recall gt Recall Setup Default Let the DUT assume its final internal operating tempera ture Allow at least a warm up period of two hours be fore proceeding Conne
308. nusoidal signal to Input A with an amplitude of 4 000 Vpp and a frequency of 100 kHz The display should now indicate 4 000 0 150 Vpp Press INPUT A and select 10x Press EXIT OK Change the amplitude to 18 00 The display should now indicate 18 00 0 84 Disconnect the signal from Channel A Press MEAS FUNC Volt gt Vpp gt Press INPUT B and select DC coupling Do not apply an input signal to Input B yet Press EXIT OK The display should now indicate disregard the main parameter 0 0 015 V and 0 0 015 V Proceed by repeating the measurements for Input B as described above for Input A Trigger Indicators vs Trigger Levels Trigger Level Trigger Indicator Pass manually set Input A Input B 1V off 1V on 0 0V blinking Table 2 4 Trigger indicator check NOTE This test must be performed in the sequence given Recall the DEFAULT settings Press INPUT A and select MANual trigger level and 50 Q input impedance Connect the LF synthesizer to Input A Use the follow ing settings into 50 Sine 10 kHz 0 9 Vpp and 0 50 Verify that the three modes for the trigger indicator are working properly by changing the trigger level Press the Trig key and enter 1 V via the keyboard then verify by pressing EXIT OK Check the trigger indicator ac
309. or optimum stability Option PM6690 6 for example has an aging 24h that is Ix 10 when operating continuously After a power interruption the oscillator drift is higher and the speci The Calibration Submenu 7 3 fication of Ix10 per 24h is reached only after 48h of contin uous operation The frequency uncertainty for standard oscillators is mainly dependent on the ambient temperature Variations in ambient temperature between 0 and 50 C may cause a frequency change of up to 100 Hz whereas the aging per month is only 5 Hz During warm up the tem perature increase inside the counter will affect the oscil lator for about two hours m How often should you calibrate In the table on the preceding page you can see the uncertainty of your time base oscillator for various MTBRC Mean Time Between Recalibration intervals Compare the requirements of your application with the values in the table and select the proper MTBRC accordingly Please note that the frequency uncertainty when operating ina temperature controlled environment is different from field use See the two sections in the table When adjusted keep in mind that the reference crystal oscillator will be compensated only for fre quency deviation caused by aging Timebase Calibration Procedure m Test Equipment The instrumentation outlined here is an example of equipment meeting the minimum requirements for calibrating the differ ent timebase optio
310. or the Set Reset channel The two main channels are fed to a Set Re set flip flop to make one channel measurements with variable hysteresis possible There is also a converter for the signal AC DC IMP COUPL LIMITER CONV LP FILTER AC DC LIMITER IMP LP FILTER COUPL CONV OPTIONAL PRESCALER BUFFER from an optional prescaler It has PECL levels 4 1 V and 3 4 V that are converted to LVTTL levels 2 4 V and 0 V Oscillator Circuits The processor has a 32768 Hz crystal An internal PLL in the processor uses the 32 kHz signal to make the internal proces sor clock approximately 30 MHz The USB IC has a 6 MHz crystal to make an internal clock and the GPIB IC has a 40 MHz crystal to make an internal clock The measurement reference oscillator timebase for the timer counter is a 10 MHz crystal oscillator or an optional oven controlled crystal oscillator OCXO Only one of these is mounted The user can also select an external reference sig nal connected to the External Reference Input BNC on the rear panel The standard oscillator consists of an inverter and a crystal The processor controls the frequency of the oscillator with a PWM signal The PWM signal is filtered to a DC level that controls the capacitance of a capacitance diode The varying capacitance changes the frequency of the oscillator The stan dard oscillator is adjusted with Closed Cas
311. pe to 20 mV div including probe m Adjustment Connect the probe tip to the center hole of J7 The sur rounding holes are suitable ground connections See Fig ure 7 2 Adjust C111 and C116 until the pulses on the oscillo scope look the same Use a screwdriver type of adjust ment tool Repeat all steps above for Input B on the timer counter Con nect the probe tip to J9 Adjust C143 and C148 Linearity m Setup Keep the settings on the timer counter and the oscillo scope from Step Response X10 Select Att X1 for Input A on the timer counter Change the period time of the pulse signal from the pulse generator to 2 ms Reconnect the signal from the power splitter to Input A on the timer counter Set the oscilloscope to 200 us div and Input B to 100 mV div including probe m Adjustment Connect the probe tip to the center hole of J7 The sur rounding holes are suitable ground connections See Fig ure 7 2 Adjust R196 until the pulses on the oscilloscope look the same See Figure 7 3 Use a screwdriver type of ad justment tool Check Step Response X1 repeat Step Response XI and Linearity several times if necessary Repeat all steps above for Input B on the timer counter Con nect the probe tip to J9 Adjust R268 Sensitivity m Setup Keep the settings on the counter from Linearity m Adjustment Connect the DMM to the test points X34 and X35
312. r a typical tim ing diagram The USB IC is a complete USB unit It is not powered from the USB bus The USB IC U34 has a 6 MHz oscillator Check at C416 The connection to the GPIB has 8 bits 5 address bits chip se lect wrn rdn and a special control signal for the level shifting IC U38 U38 is a buffer between the logic level of 3 3 V for the processor and the logic level of 5 V for the GPIB IC U37 An interrupt signal from the GPIB IC is connected to the processor See figure ee for a typical timing diagram The GPIB IC is a complete GPIB unit The GPIB IC U37 has a 40 MHz oscillator Check at TP20 Only the selected interface is involved in communication on the microprocessor bus Troubleshooting 6 21 Since both interfaces consist of only one IC each trouble shooting is fairly simple Check that the oscillator 40 MHz or 6 MHZ is running Check that the processor communicates with the selected IC Make sure the external controller GPIB or USB and the interconnection cable used are OK There is a separate bus for transfer of the measurement result data from the FPGA to the processor This bus is 32 bits wide and has a clock of its own FCLK U11 101 A signal from the processor FEMPTY X28 indicates to the FPGA that a new packet of 8 words of 32 bits can be transferred This is done with the FWR signal X30 together with the FCLK The FPGA can call for attention via an interrupt request signal FFIQ X31 This i
313. rackets at the left and right side with the screws included as illustrated in Fig 1 1 Fasten the instrument in the rack via screws in the four rack mounting holes Safety Instructions 1 3 The long bracket has an opening so that cables for Input A B and C can be routed inside the rack m Reversing the Rackmount Kit The instrument may also be mounted to the right in the rack To do so first remove the plate on the long bracket and fasten it on the short one then perform the preceding steps Line Voltage m Setting The Counter may be connected to any AC supply with a volt age rating of 90 to 265 Vims 45 to 440 Hz The counter auto matically adjusts itself to the input line voltage m Fuse The secondary supply voltages are electronically protected against overload or short circuit The primary line voltage side is protected by a fuse located on the power supply unit The fuse rating covers the full voltage range Consequently there is no need for the user to replace the fuse under any operating conditions nor is it accessible from the outside CAUTION If this fuse is blown it is likely that the power supply is badly damaged Replace the complete power supply unit Do not replace the fuse 1 4 Safety Instructions Chapter 2 Performance Check General Information WARNING Before turning on the instru ment ensure that it has been installed in accordance with the Installation Instruc tions
314. rackets on the counter WARNING Do not perform any internal ser vice or adjustment of this instrument unless you are qualified to do so Before you remove the cover disconnect mains cord and wait for one minute Capacitors inside the instrument can hold their charge even if the instrument has been separated from all voltage sources m Assembling the Rackmount Kit Make sure the power cord is disconnected from the in strument Turn the instrument upside down See Fig 1 3 Undo the two screws A and remove them from the cover Remove the rear feet by undoing the two screws B Remove the four decorative plugs C that cover the screw holes on the right and left side of the front panel Grip the front panel and gently push at the rear Pull the instrument out of the cover 1 Q 7 E i fmm 3 a Fig 1 3 Remove the screws and push the counter out of the cover Remove the four feet from the cover Use a screwdriver as shown in the following illustration or a pair of pliers to remove the springs holding each foot then push out the feet Fig 1 4 Removing feet from the cover Push the instrument back into the cover See Fig 1 3 Mount the two rear feet with the screws B to the rear panel Put the two screws A back Fasten the b
315. ral options exist Prescalers on separate PCBs covering different fre quency ranges 3 GHz and 8 GHz Two OCXO timebases very high amp ultra high stability Rackmount kit The chassis of the counter consists of a front piece molded in aluminum an aluminum rear panel and two extruded alumi num bars that hold the front and rear panels together This unit can be slid into the aluminum cover of the instrument The main circuit board is fixed to the two bars The display circuit board is fixed to the front piece A detachable connec tor joins the electronics of the front unit and the main board and the molded front piece is fixed with screws to the two alu minum bars The rear panel is also fixed to the bars with screws The front unit contains all functions needed for the user com munication keyboard display and input BNCs All other electrical functions are on the main board The rear panel has no PCB The connectors here are all soldered directly to the main circuit board 4 4 Block Diagram Description Block Diagram Figure 4 1 contains a block diagram of the electrical functions of the counter They are divided among the main circuit board the display board the rear panel and the optional prescaler board See the schematic diagrams in Chapter 9 for complete information Most functions are placed on the main board Input amplifiers with trigger level circuits Power supply Measurement logic
316. ration Subsystem ___ 4 14 Command Reference 7 6 Main 4 14 7 11 Test lt a yes 4 18 7 11 INBULAMPIMES 7 12 Power Supply 4 3 eta edo rt 7 13 9 External Reference Input 7 13 Internal Reference Oscillators 7 14 RF Input 1404404041 bead eee eee 7 14 Replacement Parts WA ie teh 8 2 Mechanical Parts 8 3 Main Board Version 8 5 8 14 Main Board Version 8 16 Parts Unique to Version 8 26 Parts Unique to Version B 8 26 Parts Common to Version and Version B 8 26 Schematic Diagrams How to Read the Diagrams 9 2 Version A saa us fad ni WAG oe 9 3 Version B icc eee 9 25 10 Appendix 11 How to Replace Surface Mounted Devices 10 2 Electrostatic 10 3 GlOSSaIy gt eed 10 3 Index VI Chapter 1 Safety Instructions WARNING These servicing instructions are for use by qualified
317. re Figure 10 3 Place solder on the pad there are no short circuits or unsoldered leads 10 2 How to Replace Surface Mounted Devices Electrostatic Discharge Almost all modern components have extremely thin conduc tors and metal oxide layers Ifthese layers are exposed to elec trostatic discharge they will break down or perhaps even worse be damaged in a way that inevitably will cause a break down later on The Electro Static Discharge sensitivity of MOS and CMOS semiconductors have been known quite a while but nowadays bipolar semiconductors and even preci sion resistors are ESD sensitive Consider therefore all com ponents pc boards and sub assemblies as sensitive to electro static discharge The text below explains how you can mini mize the risk of damage or destroying these devices by being aware of the problems and learning how to handle these com ponents ESD sensitive options are packed in conductive containers marked with this symbol Never open the container unless you are at an ESD tected work station Use a wrist strap grounded via a high resistance Use a grounded work mat on your workbench Never let your clothes come in contact with ESD sensitive equipment even when you are wearing a grounded wrist strap Never touch the component leads Never touch open connectors Use ESD safe packing materials Use the packing material only once Keep paper and nonconductive pla
318. rectly divid ers often oscillate without input signal Voltage regulator Input Arrplifier Amplifier Figure 4 10 Typical prescaler option block diagram Test go Test Routines Built in Test Routines The test routines are those accessible via the USER OPT key Press USER OPT Test Test Mode Choose one of the five alternatives 1 All Perform the four basic tests below in sequence 2 Memory Test RAM and ROM 3 Logic Test measuring logic circuits 4 Display Test the graphic LCD display 5 Interface Test the two standard interfaces GPIB and USB Power On Tests Certain tests are automatically performed at power up Errors if any are reported on the display 4 18 Hardware Functional Description Chapter 5 Corrective amp Preventive Maintenance Introduction This chapter contains information about measures to be taken for keeping the instrument in operative condition or in other words what you can do to maintain the measurement accu racy improve certain characteristics and prevent a break down Traditional troubleshooting is described in Chapter 6 Repair Calibration The single most important factor for maintaining the high per formance of your instrument is calibration on a regular basis A timer counter is mainly used for time frequency related measurements so knowing the characteristics of your
319. rn it upside down Disconnect the power cable Fit the two screws at the bottom Remove the cover from the counter See page 3 2 Fit the two rear feet with their screws to the rear panel Disconnect the cable from the mini coax connector on Fit the four decorative plugs the RF input Press the clips apart and lift the RF input PCA straight up and out When installing the RF input make sure the connector pins fit exactly in the holes of the connector housing Figure 3 4 fan is fixed with four screws and nuts The 3 GHz 8 8 GHz prescalers are fixed with snap in clips The is sol dered to the main board Disassembly Fan 3 3 Reconnect the RF input cable OCXO Options Disconnect the power cable Remove the cover from the counter See page 3 2 Turn the instrument upside down Locate the five solder joints and remove the OCXO with conventional desoldering technique for plated through holes 3 4 Disassembly OCXO Options Chapter 4 Circuit Descriptions This page is intentionally left blank Version A The descriptions in this section apply to instru ments having a Triscend microprocessor See General Information on page III for details on relevant serial numbers etc Version A 4 3 Block Diagram Description General The PM6690 Timer Counter consists of three main units Front unit Main printed circuit board Rear panel unit Seve
320. rnal Reference Input 1 2 5 or 10 MHz reference signal be connected to the rear panel BNC After amplification in an operational ampli fier narrow pulses are made in two D flip flops one narrow pulse for each input cycle These pulses are fed to the 10 MHz crystal filter After the filter a reconstructed 10 MHz signal is available A variable capacitor is used for adjusting the filter Internal Reference Output The selected 10 MHz reference signal standard oven oscilla tor or external reference is available on the rear panel The 10 MHz reference signal that is used internally by the dedicated counter circuit FPGA logic is also sent to an output pin on the FPGA It is filtered to a sine wave and amplified in an out put buffer stage having 50 Q drive capability Measuring Logic The measuring logic consists of an FPGA four interpolators and an external control input on the rear panel The FPGA core uses 1 8 V supply voltage and the I Os use 3 3 V sup ply voltage The FPGA is controlled by the processor over a 32 bit micro processor bus Input signals A B prescaler etc and refer ence clock internal 10 MHz oscillator or external reference are selected inside the FPGA The logic for all measuring functions and support functions trigger indicators start de lay pacing etc are inside the FPGA A 100 MHz reference clock is generated by a PLL circuit giving 10 ns basic mea surement resolution To increase the mea
321. rom the processor switches the converter ON OFF and also sets the contrast of the display The 4 LEDs on the display board are controlled from the mea suring logic and the ON OFF circuit Keyboard The PCB covers the back of the front unit The keys are laid out as a crosspoint switch matrix consisting of 25 regular push buttons plus a special power button When one of the buttons is depressed the dedicated keyboard IC U3 responds by send ing an interrupt to the processor The processor scans the key board over the bus to find out which button calls for atten tion The power button differs from the others by having a dual function In Standby Mode it turns on the ON OFF circuit directly but when the counter is ON it is read as any other button Then the processor turns off the counter This arrange ment is necessary since the processor is inactive in standby mode Main Board Input Amplifiers Input amplifiers A and B are identical with gt 300 MHz band width They are controlled by the processor with relays etc The analog input signal is transformed to a digital signal The 4 14 Hardware Functional Description output signals are LVPECL 2 4 V and 1 2 V approxi mately and fed to the measuring logic For a block diagram of the input amplifiers see Figure 4 8 m Impedance Selector This stage selects 1 MQ or 50 input impedance with a relay In 50 Q mode 11 resistors are used for dissipating the input power
322. rom internal to external and vice versa There is no need for a new setup If external reference is selected and no such signal is connected to the instrument the PLL will be un uP U41 Q53 Q54 10 MHz INT REF ON OFF OUT FPGA EXT REF 100 MHz IN u31 U32 U33 Q55 PLL LOCK to uP uP SPI Figure 6 67 reference system 12v O3 4 O 10 MHz OUT Vref 02 Vcontrol 1 5 GND Figure 6 68 Oven oscillator pinning seen from bottom side Troubleshooting 6 41 X10
323. s see also Figure 6 60 and use the ground pads that are distributed over the PC board 6 36 Troubleshooting Test Points Approximate Voltage R140 to R141 R212 to R213 1 00 R156 to C109 R229 to C140 0 40 U1 pin 2 U2 pin 2 0 20 U1 pin 3 U2 pin 3 0 20 U1 pin 6 U2 pin 6 1 00 Vac R151 to R157 R223 to R230 0 40 U3 pin 9 U3 pin 13 0 40 R309 and R314 R313 and R315 ECL levels 1 0 V and 1 7 V R301 both sides R304 both sides LVPECL levels 1 6 V and 2 6 V Test the trigger level by manually setting the following trigger levels Check the voltage at X6 X7 and U3 pin 10 pin 12 Set Level Approximate Voltage 1 V 0 41 V 4 V 1 65 V 4 V 1 65 V 1V 0 41 V Set the timer counter to default Select the measuring function Single Period Connect the 1 kHz square wave to channel A B Measure with oscilloscope at X6 X7 See Figure 6 65 Figure 6 66 for a typical signal If any repair work has been done on the input amplifiers both adjustment and voltage calibration must be performed after wards If any repair work has been done on the trigger level circuits at least voltage calibration must be performed after wards See Chapter 7
324. s A 5 A gt KM4100 100NF mam Conr ay gt 100NF gt 530 av 1 1 5VAD SVAD 5VAD 5VAD 4 c32 99 0367 88 U23B U44B C14 9458 15 O 9n U20B C361 9218 C364 59 0228 C365 C366 ca 558 i 4 2 2UF 6 3V C358 C362 C363 55 gt KM4100 100NF 22 63V gt THONE pow 15UF 6 3V 722 ADC1061 NE port 15UF 6 3V 722 ADC1061 100NF 100NF 15UF 6 3V 722 ADC1061 100 100NF 15UF 63V 7 6 ADC1061 1 1 i 5 4 z Schematic Diagrams 9 35 This page is intentionally left blank 9 36 Schematic Diagrams iscellaneous PCB 1 sheet 4 7
325. s are initialized bus LCD controller SPI bus fan etc The FPGA is also programmed by the processor The progress of the initialization can be followed at two test points X55 and X31 Test Point Reset IC SDRAM Init Init Ready Setup Execute X55 float inp 1 0 1 0 X31 float inp 1 1 0 0 See Figures 6 74 to 6 76 for a survey of a typical instrument startup The LCD is switched on The LCD controller in the processor generates the control signals for the LCD See Figures 6 77 to 6 8 land 6 83 Note the different timing for the signals The FC bus is used for switching the LCD on The ON signal can be checked at R34 on the display board It should be high The LCD voltages must also be switched on It is done by a control signal from the processor Check the signal at R33 on the dis play board It should be high Negative pulses on this signal are used for adjusting the contrast of the LCD i e the LCD Troubleshooting 6 43
326. s done when the FPGA would like to trans fer a packet to the processor See Figure 6 41 for a typical tim ing diagram Another bus from the microprocessor is the SPI bus It is a se rial bus with one data signal and one clock signal that are com mon for all ICs connected to the bus A separate load signal for each IC controls the loading of the data Connected to the SPI bus are See Figure 6 42 to Figure 6 45 The 100 MHz PLL IC U9 The SPI bus is used only for initialization after power on The optional oven oscillator U5 The SPI bus is used for initialization after power on and during a timebase calibration The trigger levels IC 046 The last bus is the bus It is also a serial bus with two sig nals SDA and SCL Each connected IC has a unique address The message sent includes the address and only the addressed IC will listen to the message and respond by sending an ac knowledge to the master Then it will react accordingly Introduction to the Bus The I C bus is a 2 line serial bus for the communication be tween the ICs The microprocessor controls the communica tion by means of the clock line SCL One or more slaves can read or write on the data line SDA The SDA and SCL are high at standby All ICs connected to the bus can sink SDA to low as they are interconnected via open collector outputs The microprocessor starts and stops the communication by sending terms of start and stop w
327. s heard bus is used for controlling the relays Note The bus is of the utmost importance for the start of the instrument The keys the LCD and the relays in the input amplifiers all need a faultless bus to work properly Note If the Flash PROM is exchanged it must be replaced by a preprogrammed Flash PROM Voltage and timebase calibration must be performed anew The utility program must be used for transferring the cali Figure 6 72 gt Important locations on PCB 2 during startup 6 44 Troubleshooting U52 11 2896 MH za 22 2 H T U53 U54 uP AI U15 CONTROL 3 3VD 16 16 3 3 VD 16 JTAG Me DATA 2 I interna 1 8 V LCD BUS X33 RESET 3 3 VD U116 U55 X29 Startup Monitor u40 I O u39 TEMP U13 RELAYS ETC X65 KEYBOARD DISPLAY PCB Microprocessor memories startup Figure 6 73 Troubleshooting 6 45 X55 X31 CLOCK FLASH PROM CE SDRAM CE FAN OSC 11 MHz RESN i 2 00V Figure 6 74 Startup timing processor memories fan PROGN INITN DONE CCLK RESN Ch 2 00V 2 00V 400 5 Chl 1 76 Figure 6 75 FPGA loading 6 46 Troubleshooting X31 X55 Chil 2000 lk 2 00V MI 10005 A Chr 176
328. stics etc away from your workbench These may block the discharge path to ground Glossary Calibration Ad justments CSA E EN 61010 1 F FLASH PROM FPGA G GPIB PC bus IEC LCD OCXO P PCA PCB Performance Check PLL Prescaler PWM U UCXO USB How to restore an instrument to perform in agreement with its specifications Canadian Standards Association International safety standard Electrically erasable and reprogrammable non volatile semiconductor memory Field Programmable Gate Array General Purpose Instrumentation Bus used for interconnecting several measuring instruments to a common controller An internal address and data bus for communi cation between microcontroller measuring logic and options International Electrical Commission Liquid Crystal Display Oven Controlled X tal Oscillator Printed Circuit Assembly Printed Circuit Board A procedure to check that the instrument is functionally operational and performs to its specification Must not require opening of cabi net If the instrument passes the check it is con sidered calibrated Phase Locked Loop RF frequency divider Pulse Width Modulation Un Compensated X tal Oscillator The Universal Serial Bus is a simpler alternative to GPIB Electrostatic Discharge 10 3 This page is intentionally left blank 10 4 Glossary Chapter 11 Index A Adjustments Timebase 7 3 7 4
329. surement resolution further external interpolators are used The measuring logic also controls three LEDs on the display board a GATE LED indicating that a measurement is in progress and two trigger indicators telling that the comparators are triggering on the in put signals The four external interpolators are identical Depending on the selected measurement function 0 2 3 or 4 interpolators are used A pulse representing the time from an event on the input to the following rising edge of the 100 MHz reference is fed to the interpolator During the pulse time a constant cur rent is charging a capacitor The voltage on the capacitor is measured with a 10 bit ADC The capacitor is discharged and the interpolator is ready for a new measurement An external control input BNC is located on the rear panel A signal applied to this connector can be used for controlling the 4 16 Hardware Functional Description start of a measurement for instance A comparator converts the analog input signal to a logic signal Processor Circuits The processor is a Sharp LH79524 It contains an ARM7 core and peripherals It runs on a 50 8 MHz internal clock The processor that uses 3 3 V supply voltage has an internal circuit that generates 1 8 V for the core The I Os use 3 3 V The 32 bit microprocessor bus communicates with a 16 bit 8 MByte flash memory and a 32 bit 32 MByte SDRAM The flash memory contains the program data for loading the FPGA an
330. t panel is read by the processor ON is handled without the processor since it cannot respond to external stimulus in standby mode Power Supply This timer counter has no primary power switch If connected to line power there are live parts inside the cabinet and some supply voltages are present on the main circuit board even if the secondary power switch on the front panel has been turned off standby mode A semi protected AC DC module is placed on spacers over the main circuit board It delivers three regulated DC voltages to the counter 15 V 5 and 15 V When the counter is connected to line power these voltages are always present There is a 5 trimmer potentiometer on the AC DC mod ule The ON OFF circuit is active as soon as the counter is con nected to line power The instrument automatically powers up when line power is applied Only the processor can switch the circuit to OFF state standby mode Then only the power but ton on the front panel can switch the instrument to ON Once connected to line power and in OFF state standby mode supply voltage 12 VU is distributed to the oven oscillator to keep it warm In standby mode a red LED is lit on the front panel To keep the AC DC module stable in this mode a dummy load is connected to draw a quiescent current of 0 1 A at 5 V The three main voltages are 15 V 5 V and 15 V from the AC DC module All other supply voltages are generated from them and
331. the 100 MHz output frequency is exactly 10 times the reference frequency External Reference Input 1 2 5 or 10 MHz reference signal can be connected to the rear panel BNC After amplification in an operational ampli fier narrow pulses are made in two D flip flops one narrow pulse for each input cycle These pulses are fed to the 10 MHz crystal filter After the filter a reconstructed 10 MHz signal is available A variable capacitor is used for adjusting the filter Internal Reference Output The selected 10 MHz reference signal standard oven oscilla tor or external reference is available on the rear panel The 10 MHz reference signal that is used internally by the dedicated counter circuit FPGA logic is also sent to an output pin on the FPGA It is filtered to a sine wave and amplified in an out put buffer stage having 50 Q drive capability Measuring Logic The measuring logic consists of an FPGA four interpolators and an external control input on the rear panel The FPGA core uses 1 8 V supply voltage and the I Os use 3 3 V sup ply voltage The FPGA is controlled by the processor over a 16 bit micro processor bus Input signals A B prescaler etc and refer ence clock internal 10 MHz oscillator or external reference are selected inside the FPGA The logic for all measuring functions and support functions trigger indicators start de lay pacing etc are inside the FPGA A 100 MHz reference clock is generated by a
332. the Diagrams This chapter contains circuit diagrams and component layout information Signals The signal designations reflect the functions for instance means DATA BIT 0 from the ADC Analog Dig ital Converter Three different types of graphic symbols are used to mark ref erences for continued connection somewhere else in the dia gram This arrow is used if the reference to a supply voltage is directed to a point located on the same sheet The example means that the supply voltage 2 1V can also be found elsewhere on the same sheet This arrow is used if the reference to a supply 12578 voltage or a signal is directed to a point located on another sheet The example means that the supply voltage 3 3VD goes to sheet 1 2 5 7 and 8 A broken line with a signal designation label _PLLLOCK means that this particular signal can also be found elsewhere on the same sheet Circuit Symbols The diagrams are computer drawn The symbols conform to IEC standards These symbols are designed to be logical and easy to read The component number is written above the symbol The type number is written below the symbol 9 2 Schematic Diagrams Inside the symbol there is sometimes an abbreviated descrip tion of the circuit s function Pin numbers are written outside the symbol and if the circuit is complex the pin functions are written inside A small circle on a pin indicates that the input outp
333. the timer counter re sponds when you press any key It is not a functional test Such tests are performed later in this chapter The important thing here is that something changes on the display when you press a key Consequently you can press the keys in almost any order without paying attention to the exact response but for those who want to be more systematic there is a table over leaf where all keys are exercised at least once Press the keys as described in the first column and look at the display for the text in the second column Some keys change more text on the display than described here The display text mentioned here is the one mostly associated with the selected key NOTE For the instrument to respond correctly this test must be carried out in sequence and you must start with the DEFAULT setting Do as follows Press USER OPT Press Save Recall Press Recall Setup Press Default See Table 2 2 for the complete list of default settings PARAMETER VALUE SETTING Input Trigger Level AUTO Trigger Slope POS Impedance 1 MQ Attenuator 1x Coupling AC Filter OFF Arming Start OFF Start Slope POS Start Arm Delay 200 us Stop OFF Stop Slope POS Ho
334. tion VOLTage LOAD USER Restore User Calibration Recalls the calibration factors last stored by the user CALibration VOLTage STORe _ lt YYYYMMDD gt U Store User Calibration Ends the calibration process and stores the calibration factors using the date code YYYYMMDD that is year 4 digits month 2 digits and day 2 digits Example SEND CAL VOLT STOR 20040731 7 10 Voltage Reference Adjustments Preparations Before beginning the adjustments power up the instrument after removing the cover see Chapter 3 and leave it on for at least 60 minutes to let it reach normal operating temperature
335. to do so WARNING When you remove the cover you will expose live parts and accessible ter minals which can cause death WARNING Although the power switch is in the OFF position line voltage is present inside the instrument Use extreme cau tion WARNING Capacitors inside the instrument can hold their charge even if the instru ment has been separated from all voltage sources Make sure the power cord is disconnected from the counter Turn the counter upside down Remove the two screws at the bottom and the two screws in the rear feet Remove the four decorative plugs C that cover the four screw holes on the right and left side of the front panel Grip the front panel and gently push at the rear Pull the interior unit out of the cover Fan Disconnect the power cable Remove the cover from the counter See page 3 2 Remove the four screws nuts and washers that fix the fan to the rear panel Disconnect the fan power supply connector from the main PCB and remove the fan When reinstalling the fan make sure the air flow arrow on the fan points to the rear of the counter and the black wire is oriented toward the rear panel 4 screws to remove Figure 3 5 Remove the screws and pull out the PCB Reinstalling the Gover Prescaler Options Push the counter gently back into the cover Tu
336. to replace the fan Other Important Information There are no batteries of any kind in this instrument so in gen eral it is only necessary to remove the cover when the fan is to be replaced or when a real fault calls for traditional trouble shooting Utility Program 5 3 This page is intentionally left blank 5 4 Other Important Information Chapter 6 Repair This page is intentionally left blank Version A The descriptions in this section apply to instru ments having a Triscend microprocessor See General Information on page III for details on relevant serial numbers etc Version A 6 3 Troubleshooting General The 90 is a highly integrated Timer Counter in which a dedi cated FPGA counter circuit handles the signal processing and a microcontroller does the postprocessing and supervising jobs A number of additional functional units support these basic tasks for instance power supply reference oscillator wideband input amplifiers comparators memory RAM amp ROM digital analog converters etc The units are treated from a troubleshooting point of view in this chapter which means that units described earlier should be considered faultless before troubleshooting on units de scribed later WARNING Live parts and accessible termi nals which can be dangerous to life are always exposed inside the unit when it is connected to the line power Use extreme caution when handling testing or adjust i
337. tor Circuits Description 4 7 4 15 Oscillators Calibration 7 3 7 4 Oven Oscillator Troubleshooting 6 40 P Performance Check Frequency Range 2 4 Front Panel Controls 2 2 2 3 General Information 2 2 Hold Off Function 2 7 Input Controls 2 5 Measuring Functions 2 6 Rear Inputs Outputs 2 6 Reference Oscillators 2 5 Resolution 2 5 RF Options 2 7 2 8 2 4 Test Equipment 2 2 Trigger Indicators 2 4 Voltage a eek cee as 2 4 Positive ECL Logic Levels 6 4 6 32 Power Supply Description 4 8 4 16 Troubleshooting 6 32 Power Supply Inlet Location of 4 9 4 17 Power On Tests 4 10 4 18 Prescaler Adjustment 7 14 RF Option cocos 4 10 4 18 Troubleshooting 6 43 Primary Circuits 6 4 6 32 Processor Circuits Description 4 8 4 16 Protective Ground Checking the Connection 6 59 R Rear Inputs Outputs Performance Check 2 6 Reference Oscillators Performance Check 2 5 Reinstalling the Cover 3 3 Removing the Cover 3 2 Required Test Equipment Checkup Adjustment Repair 2 2 Resolution Perform
338. trument display The whole concept is known as Closed Case Calibration NOTE The timer counter must have been switched on for at least one hour before you start any calibration When the instrument leaves the factory the calibration data is stored as factory calibration that cannot be changed by the user There is one active set of calibration data It can be a user set or the factory set If a user set is active and a new user calibra tion procedure is initiated then the older set of data is stored to make it possible to return to the earlier calibration status Password Protection ON OFF The default setting on delivery for the password protection is ON but can be changed to OFF after the first time use if so de sired Activate or deactivate the password with this key Internals Frequency A SING ia Certain internal delays are measured in order to correct the re sults of real measurements This is done without applying ex ternal signals This procedure needs only be run after firm User options Calibrate lnternals ware upgrading or if repair work has been done on the mea suring logic or the analog interpolators Press Start Calib to run the procedure The new calibration will be the active calibration m Calibration via the GPIB or the USB The calibration can also be performed by sending commands over one of the interface buses Always end the commands with the Operation Complete Query OPC
339. ture measuring 039 with address 48hex The digital I O IC U3 with address 21hex It switches the LCD display on after power on initialization it scans the keyboard on the display circuit board The bus is connected to the prescaler connector J15 for future use U13 INT CSUSB CSFPGA 6 MHz CSGPIB RD 3 DIRGPIB pi 16 P CONTROL 6 Tem U DATA gt 3 3 VD 145 VD 40 MHz 201 U38 B5 7 GPIB ADDRESS 5 5 Vi 5 VD 3 INT E 3 MEASUREMENT DATA FPGA Pozna NEE MEASUREMENT CONTROL POW U11 FIFOALERT EMPTY INT 034 037 Microprocessor bus and interfaces Figure 6 34 Troubleshooting 6 23 p M Bzz as GIER mem M uted X28 U13 U39 U38 037 C416 X20 034
340. ty reading the temperature Measuring Logic The measurements are made in the FPGA Only four interpolators are external to the FPGA They increase the ba sic measurement resolution from 10 ns 100 MHz measure ment clock to less than 100 ps Different combinations of interpolators are used for different measurement functions two three or four in conjunction The input signals come from the input amplifiers A B and SR are differential LVPECL in puts C the prescaler input is a single ended LVTTL input The measuring logic also provides three LEDs on the front panel with control signals The interpolator transforms a pulse width between 20 and 33 ns to a voltage This voltage is read by an ADC The interpolator is calibrated by reference pulses having a width of 20 and 30 ns The measurement pulse varies between 22 and 32 ns typically The ADC has two reference voltages the lower limit and the upper limit The interpolated voltage must never fall outside these limits Select the default setting from the front panel Apply a 10 MHz sinewave signal stable low jitter signal to input A The signal should be found at the pins of the FPGA Check that the measurement signal is present on pins 17 and 18 dif SCL BE 1 007 amp Ch2 100 40005 A Chl 2 10V Figure 6 47 bus activity depressing the EXIT key ferential input on the FPGA U11 The trigger indicator LED A on the front panel shoul
341. up to a maximum of 2 9 W 12 Vins m Attenuator This stage has two parts a fixed preattenuator approximate attenuation 2 5x and a cascaded relay operated 1x 10x step attenuator The variable capacitors are used for adjusting the frequency response of the attenuators m AC DC This stage selects AC or DC coupling with a relay m Limiter The voltage limiter protects the impedance converter against overvoltage The 5 V applied to the input BNC is divided to approximately 2 1 V by the attenuator The limiter clamps the voltage to approximately 2 8 V m Impedance Converter Split band technique is used for achieving good frequency re sponse over a wide range The HF signal is fed via an AC coupled FET stage The LF signal bandwidth DC to ap proximately 10 kHz goes via an operational amplifier The signals are added together at the source of the FET The output signal from the buffer stage see below is fed back to the op erational amplifier A trimmer potentiometer is used for equalizing the gain in the two signal paths approximately 0 9 m Filter A lowpass RC filter with an approximate cutoff frequency of 100 kHz can be switched in via a transistor m Buffer Before the signal is fed to the Crossover Switch it passes a current amplifying buffer stage that can drive the following low impedance stages m Crossover Switch This stage uses relays to direct the signal to the two compara tors The following combinat
342. ut amplifiers WARNING Live parts and accessible termi nals which can be dangerous to life are always exposed inside the unit when it is connected to the line power Use extreme caution when handling testing or adjust ing the timer counter Preparations 7 11 Input Amplifiers Check the power supply voltages according to the instructions on page 7 13 before proceeding to the next step All adjustments on the input amplifiers must be made in the specified order The input amplifiers are enclosed in an RF shield consisting of a metal lid that is soldered to two of the shield clips on the main circuit board Without these solder joints there is a risk of the lid coming off should the instrument be subjected to heavy bumps There are two alternative ways to adjust the input amplifiers One is to remove the shield to gain access to all trimmers and test points on the top side of the main circuit board Don t for get to put the shield back and restore the solder joints The other way is to access the trimmers via the holes in the shield lid and to use the test points on the bottom side of the main cir cuit board Place the instrument on end to get access to both sides of the main circuit board Step Response X1 m Setup Do as described under Preparations above Select default settings by keying in USER OPT gt Save Recall Recall Setup Default Select for Input A
343. ut inverts the signal The signal flow through the circuit is normally from left to right Resistors Capacitors Diodes Transistors and Other Components These components are similar to the old fashioned hand drawn symbols They have their component numbers above or beside the symbol and their value or type number be low the component number Component Numbers Letters Components Crystals and crystal filters Capacitors Diodes Fuses Jumpers and connectors Relays Coils Connectors Transistors Resistors ICs Test points Xx cuouracmoou The numbers that follow are sequential and serve as sche matic diagram and layout identifiers together with the leading character Version A The descriptions in this section apply to instru ments having a Triscend microprocessor See General Information on page III for details on relevant serial numbers etc Schematic Diagrams 9 3 This page is intentionally left blank 9 4 Schematic Diagrams This page is intentionally left blank Schematic Diagrams 9 5 Main Board PCB 1 Component Layout
344. ven oscillator The ON OFF circuitry controls the ON and OFF of the sec ondary voltages Its own supply voltage is always ON as long as the instrument is connected to line power See Figure 6 6 ON OFF LOGIC DUMMY LOAD Q56 Q57 Q46 Q47 Q58 U29 uPROC 15 12 X16 5 VA X13 049 Q50 1x15 0129 a SWITCH LINEAR 5 VU 6 J17 2 3 J17 1 8 15 VUO 15 VU Q J17 6 O 12 VU X17 J28 0130 FAN LINEAR Q48 U30 uPROC 12 VA 5 2 VI 24V 25 0124 0123 951 035 x LINEAR LINEAR LINEAR LINEAR Figure 6 1 Power distribution Troubleshooting 6 5 On connection of line power R478 and C389 keep the RESETN input of the flip flop U29 low This sets the QN out put of U29 high Via Q47 output signal low and Q58 output signal high the secondary power supply will be set in ON mode To switch to the standby mode the processor sets the SETN input of U29 low This results in the QN output being low and the secondary power supply being set to standby mode via Q47 output signal high and Q58 output signal low In standby mode a bleeder circuit on 5 VU is connected It draws approximately 100 mA to stabilize the AC DC module The standby LED on the front panel is switched on To switch to ON mode from standby mode a negative pulse generated by pressing the ON OFF key on the front panel is connected to the RESETN input of U29 Linear
345. ws the prescaler or the timer counter First measure with Channels A and B and check that the result is OK Select the function Frequency C Connect a signal ac cording to Table 6 2 to Input C Check the following pins on the prescaler connector J15 on the main circuit board Pin 1 5 V supply Pin 5 12 V supply Pin 7 ON OFF ON is 0 V Pin 11 test signal should be 0 Pin 12 code 0 see Table 6 2 Pin 14 code 1 see Table 6 2 Pin 16 code 2 see Table 6 2 Pin 4 prescaler output signal PECL levels 4 1 V and 3 4 V OPTION 3 GHz 8 GHz 14 GHz Frequency GHz 1 1 5 Level dBm 0 0 0 Division Factor 16 256 128 Code 0 0 0 1 Code 1 1 0 0 Code 2 0 1 1 Table 6 2 characteristics Measure with oscilloscope and probe at pin 4 The output fre quency should be the input frequency divided by the factor in the table Check with a frequency counter Note The 3 GHz option has a sensitivity trimmer See page 7 14 for information on how to adjust it Microprocessor amp Memories Startup Process The processor in this instrument is a 32 bit ARM7TDML It is housed in an IC U13 together with peripheral units SRAM timers I C bus interface SPI bus interface LCD controller etc The complete IC is a Triscend design and of type A7S20 A separate memory bus on the processor is connected to one 16 bit Flash PROM 017 and two 16 bit SDRAMs 016 and U

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