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PM6681 Service Manual

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1. 11 15 08 0 12YREG gt L sv REG 15 04 p 9V m 500N 12 07 00015 12 00 D DACMUX 4 R325 g 12 06 DABLE C 650 DAGA R326 2 00 pESDAGA R22 mo ua Red 580 17 N 5A Q U86 i L 2 12 I 25V 3 ISS f 1403 10087 15U 63V 4015128163 ano 5321 AGND EN B 5 E 168 1 1U 50V 28 R332 zmia 20K 22K j AGND FULL SCALE COMMON B EV E E E 4 R312 68K AGND AGND 3 BV 15 06 D SA 2 58U 5 34 TiooN G8U 5 3V aoon Toon i 5 2V L 15 03 p gt 5 24 R328 AGND 0 C157 0156 1008 Toon 0 A B C D E F G H J K L M 6171 33P R319 R329 R316 41 TOK NE532D C172 33P R320 R330 R313 Ll C l TOR TB 5 NES320 183 Lit T M rigger level DAC Unit 1 sheet 4 6 N 0 P a 11 10 g 9V 1 D44 R317 BAV 99 M C 244 TRIGGER LEVEL A OUT 700 P25 C148 dy D44 N BAV99 100N 12VREG REAR ay Y PANEL J D45 C 136 TRIGGER LEVEL B QUT 700 D45 P25 C148 Fi BAV99 3 7 100N Pas lt GND 12VREG TRIG LEVEL A y 49 6 TRIG LEVEL B no 4 3 2 1 0 H o P a Drawings amp Diagrams 8 11 suwelbelg 9 Shuimbig ZL 8 va R Jr ver Zeng R3011R165 a m E mar E 056 d less 1 an e seg i esee C TSE lg PR 1365 Dp L A eee bung EET zi En pinag opis wonog dis N is EEN e jno e jueuoduio pseoq 21seg
2. 8 2 Resistors Capacitors Diodes Transistors and Other Components 8 2 Component Numbers 8 2 9 Appendix How to Replace Surface Mounted Devices 9 2 Electrostatic discharge 9 3 Glossary EE 9 3 New Unitd oooooooooooooooomoooomnoo 9 4 Replacement Paris 9 4 Schematic Diagrams 9 11 Model PM6681R 9 25 OCXO Range Extended PT 9 27 Option PM9671B xs x x rann 9 29 Replacement Parts 9 29 Schematic Diagrams 9 31 10 Index Chapter 1 Safety Instructions WARNING These servicing instructions are for use by qualified personnel only To reduce the risk of electric shock do not perform any servicing other than that specified in the Operating Manual unless you are fully gualified to do so Authorized service and calibration of this instrument is avai lable worldwide A list of service centers is printed on the last page of this manual Read this chapter carefully before you check adjust or re pair an instrument Caution and Warning Statements You will find specific warning and caution statements whe re necessary throughout the manual CAUTION Indicates where incorrect operating procedures can cause damage to or de struction of eguipment or other property WARNING
3. 5 5 Troubleshooting Tree 5 5 Power Supply Functional Level 1 5 6 Oscillator Functional Level 2 5 7 Microcontroller Functional Level 3 5 8 Microcomputer Kernel Functional Level 4a 5 9 Microcomputer Kernel Functional Level 4b 5 9 Internal Control Signals and Display Functional Level Da nana 5 11 Internal Control Signals and Display Functional Level 5b 5 12 Keyboard Functional Level 6 5 12 Measuring Logic Functional Level 7 5 13 Trigger Level DAC s Functional Level8 5 14 Input Amplifier Functional Level 9 5 16 GPIB interface and Analog output FunctionalLevel10 5 18 Safety Inspection and Test After Repair 5 19 General Directives 5 19 Safety Componenis 5 19 Check the Protective Ground Connection 5 19 Calibration Adjustments Introduction lt sss s e x x h h B 6 2 Required Test Equipment 6 2 Preparation s eee 6 2 Power Supply 6 2 Crystal Oscillators 6 3 16 MHz Oscillator 6 3 External Reference Input Multiplier 6 3 Standard Oscillator
4. 6 3 100 MHz Frequency Multiplier 6 3 Optional TCXO PM 9678B 6 4 Optional Oven Oscillators PM 9690 and PM 9691 6 4 Interpolator eee 6 5 Input Amplifier 6 6 StepResponse 6 6 ChannelA PAA 6 6 ChannelB 6 6 1X Attenuator channel A 6 6 10X Attenuator channel A 6 7 1X Attenuator channel B 6 7 10X Attenuator channel B 6 7 Sensitivity 6 7 Trigger Levels n 6 7 VI Analog Output lt e x s x s e knn nk eee 6 8 1 3 GHz HF input PM 9621 6 9 2 7 GHz HF input PM 9624 6 9 4 2 GHz HF input PM 9625B 6 10 4 5 GHz HF input PM 9625 6 10 7 Replacement Parts IntroduUction 7 2 Standard Parts 7 2 Special Paris 7 2 Mechanical Parts 7 3 Main Board eee n m n 7 5 Front board lt s s sss see eee 7 16 PM 9621 eese ana 7 17 PM 9678B cece hh hhh nn hn nn rn 7 19 8 Schematic Diagrams How to Read the Diagrams 8 2 Signals 8 2 ColoredAreas 8 2 Circuit Symbols
5. 2 4 Sensitivity and Frequency Range 2 4 Check VMAKAVMIN 2 4 Trigger Indicators and Controls 2 4 Trigger level check 2 4 Reference Oscillators 2 5 Resolution Test 2 5 Rear Input Output 2 5 T1O0MHZOUT 2 5 GATE OPEN Ouiput 2 5 REFERENCE IN 2 5 EKTARMinput 2 6 TRIG LEVEL A amp B Outputs 2 6 Probe Comp View 2 6 Measuring Functions 2 6 Check on HOLD OFF function 1 1 1 2 7 Options 2 7 Check on brescalers naar 2 7 PM 6681 Performance Check Report B 1 Disassembly Removing the Cover 3 2 Reinstalling the Cover 3 2 Fah ssa kokkaa ra 3 3 PM 9621 PM 9624 or PM 9625 HF Input 3 3 PM9678BTCKO 3 3 PM 9690 or PM 9691 Oven Oscillator 3 4 Reinstalling the Battery 3 4 Exchange Procedure 3 4 Circuit Descriptions Block Diagram Description 4 2 General lol oll onn nan on ee 4 2 Hardware Functional Description 4 4 Front Unit eere nnn 4 4 LCD Drivers
6. EH var LZ ino ej Juguoduuo2 pieog 215969 tn ici CH bah 2i cB 0 d 1040 a ta th SS STRTAB Ria TEN sr Input amplifier Unit 1 sheet 1 6 A a c D E F G H l J K L M N o P 0 4031 100 53030 PM 6681 INPUT AMPLIFIER 553 j 12 8 330 Lbis Je c7 Los C RES R58 Rad VOLTAS jo AT B BAV99 TION joon J BAV 1 nog C4 C18 C304 10K TOK 2 2K 11 330 100N 100N 100N 11 Lous 4 D BAV99 eh A BAV99 A RST i x10 D62 BATIB BATIS na TOK NE5320 0 5 2 0P Y BAV99 page R34 5 F L D62 L na D IL5O 10K 50 OHM71MOHM BAV99 BAV99 l R494 R493 Ragos P RK TOK TK 10 RH Dersu F czil Grea Hoo pAgHIGH 10 INPUT Ad 470K 56K 1 R496 1K i Joa08 P d x ed Reo ns HH T ion em 19M TRIG LEVEL A MB b A 2 7K C53 BFG97 FILTER as S Tim Qu R12 R601 ES 15K 1 8K H 100 N 9 mya R115 T N A CONV ag g 470K SA SN 10 3 K5 2 9 KS YY L 153 3 Li 7 a arsina a 1 220UH AR 6587 0 S E d NGFFSETA R10 M So gt cze Jeu 100 ass R67 nig Tn r M TISS Tee 47 8 S 380 Laso 8 15 07 2400 R603 Q R63 100K ROT U 1220 47 EK CSB 5V E R167 D61 D I T 15 06 pil save Y savas Sav ye EINA EEN 58 D13 2200U 6 3V 68U 5 34 Tioon T100N R28 057 ioon BAYES 5 7 56K xac pan LE 7 3 agg ioon COMP A wd 4013
7. 4 4 Keyboard 4 4 MainBoard 4 5 Input Amplifier A 4 5 input Amplifier B 4 8 Calibration Circuits n 4 8 Trigger Level Circuits 4 9 Power Supply 4 10 Counter Circuits 4 12 Oscillator Circuits 4 14 Logical Circuits 4 16 GPIB Interfface 4 18 Analog Output 4 18 Rear Panel Unit ooocoooomooo o 4 19 Optional Units 4 20 HFInputs 4 20 Test Routines nzazunna 4 23 Test Routines via AUX MENU Key 4 23 Power On Tests 4 23 Repair Preventive Maintenance 5 2 Calibration 5 2 Oscillators 5 2 Battery Replacement 5 3 Troubleshooting ssnnnsnncnannnnannnna 5 4 General ii 5 4 Quick Troubleshooting 5 4 Where to Start 5 4 Logical Levels ooo 5 4 Required Test Equipment nai 5 4 Operating Conditions 5 4 Introduction 5 4 Running Test Programs
8. 4031 100 53030 PM 6681 POWER SUPPLY CIRCUITS 0378 462 100K 47N 250Y pna z R469 10 467 100K D50 y 2050 i i BAV23 BAV23 R472 R R558 D53 R559 D54 va KZ BZX84C8V2 P BC807 E ps gt DST K 100U 35V BYW23F 200 L20 270U 400V MAINS LINE VOLTAGE FILTER 90 260V P19 174 T2 2N C183 16184 3 Ia TN iHi nie Sch 180 SAFETY EARTH gt 76 2 R336 KL Don p sl tt U76 DISPLAY 6 1D Por LS amp ON gt 24 E da P KEYBOARD maar M DT C180 AC11074 Ky 1 UTS TT vs as ads H kedi a 14 N i 12 q R R350 50 R428 C160 ACT1074 kaada 0 4TOK L mi 15K RAD 4 16173 T2 2N A vsa S BC847B 470U 35Y 470U 35V 10000U 6 3V EBI grs erze Je Jon Joass 10323 lora Taon Tion Ticon 68U 6 3V 33U 40V F33U 40V R356 took 118131 urs 2 P om 37 6 A JR357 KEN 3140 10K R358 33K R371 GC 00K R359 md Power Supply circuits Unit 1 sheet 5 6 M N o P Q PALE DAT 11 R555 10M VE2 BCP51 NE532D R551 R550 L TOK 10 C340 cad 470 357 5 FAN 9 IER i I la 12VREG NM 1 7812 i py avis LE en mA a o RAI U70 p U 7 E Weg cw B3 i ENG 13 410 R341 MIT nass uri 100 Joas f K 2 Sei C335 Leer 10338 R342 33U 40V py Fon TL431C fee 470 6 R374 23K AA i D JAA R253 gt y AB 0 22 10336 Ki 15U 5 3V 4 5 4 o ARP R365
9. Glossary A ASIC C Calibration Ad Justments CSA G GaAs GPIB I I2C bus IEC 1010 1 L LSI OCXO P PCA Performance Check PWM UCXO Application Specific Integrated Circuit How to restore an instrument to perform in agreement with its specifications Canadian Safety Association safety standard A technigue to make very fast ICs using Gallium Arsenide substrat General Purpose Instrumentation Bus used for inter connecting several measuring instruments to a com mon controller An internal address and data bus for communication between microcontroller measuring logic and options International Electrical Commission safety standard Large Scale Intergarated circuit Oven Controlled X tal Oscillator Printed Circuit Assembly A procedure to check that the instrument is function ally operational and performs to its specification Must not require opening of cabinet If the instrument passes the check it is considered as calibrated Pulse Width Modulated Un Compensated X tal Oscillator standard Flectrostatic discharge 9 3 Un The main printed circuit board Unit 1 has recently been rede signed due to obsolescence of a number of integrated circuits Designations found in circuit descriptions schematic diagrams and parts lists in the first eight chapters refer to the original de sign The functional descriptions are correct on the whole if you make a few substitutions A new se
10. eses sers BEE Eks epis woyog jno e u uoduio2 pieog UIL Logic Circuits Unit 1 sheet 2 6 45 BM D CPU amp MEMORY 128 EI P1 0 PhO RAG TIN 3 IDENT2 DENTI IDENTO TSTGO ONOFF yya DARES PEP DW TIBP DW P16P 16PDW Y162 0W 16P DW P16P DW MIGPOW f16P D 85 ti 15 8 12VREG 121620 14 P20 16 BU 9 P20 15 P20 1 P20 Spa 11 P20 7 P 20 e 57 12V 13 Bae FA Szy gy Dzi R192 2198 Risa 52 W 12V BAS45 BAR42 n2 10K 10K 39K R203 10K 10 423 R204 TEST1 Toon 100K BV R199 10K B B 9 16MHZ pa cos carlos Pous TL7770 8 x lor ker Tome irae DUN 6 pg p4 ii a 9 od s 5 IXTALZ DA RESET CLKOU pa GPU GPU t O EA Ba NMI 8 d AGND i B ell H R564 RIS Em 10 22K 10K Wo M Kari del a P 16 78 SAS jg e 7 RH Bb eof R ERE RED 14 93 S A2 JG 108 AL PIG SL A each CEUS 16 TB AD13P4 5 TAON ARE 6 AD14 P4 6 AHT RA AD15P4 7 gt ABTS HS LO is RDX P2 1 HS L 1688967 44 EXTINT P2 2 gt HSOAMSI2 3 COMMON q BAN ote I ja T2CLKI P23 HSO 5 H8I 3 TII pp 0H Barres 2gp 10F RE LAYS sell E IN THE 5 Sept ha INPUT 5 ema ap DI AMPL AD 14 08 11 04 1 4 ji pa gt 3 78 44804 4 IA sannan 8 Pigo ONLY W Bag VERS TEO Pao BA MER 5 2125 FOR Piet TEST SDA Ji7 DISP DRIVER 22K Aga BEAD pa an otto G C d Poo N
11. Measure the DC voltages according to Figure 5 22 and Table 5 7 Use the DMM with a 10 k resistor in series with the test cable 0 5 square 0 5 sauare 1 square 1 sauare Table 57 Typical voltages Input Amplifier AC levels Connect a 1000 Hz sine wave signal with an amplitude of 1 Vp p to Input A Set the input amplitude to 1 Vp p Measure the AC levels according to Figure 5 22 and Table 5 7 Use the oscilloscope and a 10 MQ probe Trace the signal from V23 pin E and V29 pin E to PRO BE COMP VIEW A and B OUT P25 pin 5 and 4 at the rear panel If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 CIRCUIT DESCRIPTIONS Input Amplifiers A and B e Prescaler 1 3 GHz PM 9627 In all measurements you should use TP4 as ground 5 76 Troubleshooting 1P4 FER TP3 Figure 5 23 Test points 1 3 GHz prescaler Sensitivity Check Connect the signal generator to the HF input of the counter Check the Correct sensitivity and counting levels accor ding to Figure 5 24 to find out which part may have cau sed the fault If everything seems all right the fault is probably caused by the base unit 900 1100 1300 MHz Specification limits Threshold gt 1 dB Hysteresis about 1 dB Correct counting level gt 3 dB Figure 5 24 Sensitivity and Counting levels DC voltages Use a DMM
12. R24 47 NE532D G18 180 TN cig 10N Lars 10N GRE BATIT se BAVSS 5 GRIS 10K R23 330 1 zJ R30 SENSITIVITY 4 3 TS10 BCB47B 2 1 0 A B C D E F G H 1 J K L M N GHz HF input PM 9621 o P 5 11 49 10N BUT Lu 10 se 5 VOLT esol 023 Boc ID jall fe BUT ID BUT tD BUT 9 Aog ECL OUTPUT BUT 8 B CITE GND Jeng BAV99 GND BUT R38 R43 1K 1 8K 7 C ot T su D L GR17 6 CL TS LE E 39 R39 1N 470K 5 BUT GND TE GND TES GND 4 3 TEST GO 2 1 0 D F 5 Drawings amp Diagrams 8 19 TCXO PM 9678B PM9678B Pr U U 1 U 1 1 1 Ma LAP NG 1 D N J L e h U L4 8 20 Drawings amp Diagrams Chapter 9 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 reguire another technique If you do not have special SMD desolde ring eguipment follow the instructions below Figure 9 5 Solder all leads with plenty of solder dont worry about short circuits at this stage Figure 9 1 Heat the leads and push a thin aluminum sheet between the leads and the pca Figure 9 6 Remove excessive solder with desoldering braid Figure 9 2 When removed clean the pads with desol dering braid Figure 9 7 Use a strong magnifying glas to make Figure 9 3 Place solder on the pad sure there are no short circui
13. The timing diagram in Figure 5 15 shows the signals ge nerated by the stimuli program If you find any fault continue with traditional troubleshoo ting technigues and replace defective circuits See also Chapter 4 Circuit Descriptions Logical Circuits Figure 5 14 Display driving signals and internal con trol signals can be measured here Troubleshooting 5 11 JBBBBBB E H H H H 0 0 0 EY EL av s FREQA FREQC PERA RATIO A B RATIOC B PWIDTHA TIME A B PHASE A B ARM ARM TOT A B MAN TOTAJLILB TOTAJLB DUTYFA RISEFALLA VOLTA MAXMIN STAT STOt REMOTE EXTREF FILTER 150M2 ZZ ASB cl 150M2 COMA CHECK HOLD SRA LO BAT 10X DCAC BURST AUTO PRF DCAC 10X OFF Figure 5 16 Display readout test 12 Internal Control Signals and Display Functional Level 5b NOTE It is not possible to run this test before you have run Keyboard test Level 6 Run DISPLAY test Test 12 Check the validity of the display readout according to Figure 5 16 Keyboard Functional Level 6 Run the Keyboard test Test 5 Press a pushbution on the front panel and check that the displayed code are as in the Figure 5 17 NOTE The STAND BY ON and LOCAL PRESET pushbut tons cannot be tested with this tool If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Front Unit and Keyboard Scanning PM 6681 HIGH RESOL UTION PROGRAMMABLE TIMER COU
14. First divider The GaAs divider chip consists of an input buffer 3 divi der stages and 2 output buffer stages The circuit divi des by 8 Second divider This divider divides the signal from the first divider by 4 In total the frequency is divided by 32 and the output freguency from the prescaler is 155 MHz at maximum Voltage regulators Two positive voltage regulators are used for the GaAs amplifier and the first divider Test Routines Test Routines via AUX MENU Key The test routines are the routines accessible via the aux menu key Refer to the PM 6681 Operators Manual Power On Tests At power on some tests are automatically performed Si multaneously a message is sent to the serial port of the u computer The message can be read by a PC connected to the serial port To do this perform as follows Connect testpoints P5 0UT and P16 GND to a COM port on the PC Run a terminal emulator program as KERMIT or Wind ows TERMINAL EMULATOR Switch on the counter Every time the counter is switched on the following message will be displayed on the screen Code start OK Ram regs OK Timer OK Prom bank3 OK Prom bank2 OK Prom bank1 OK Prom bank0 OK Disp Driver 1 OK Disp Driver 0 OK Disp Driver fill Ram bank2 2080h xor OK 4000h fill OK Ram bank1 2080h xor OK 2080h fill OK 4000h fill OK Ram bank0 2080h xor OK 2080h fill OK 4000h fill OK Ram bank2 4000h zero OK C000
15. VT CE AJgpEIE O F T 2 24 D ds E 1D RAD 1 J Ci be U37U68 CR gt 220 acra R283 18244 470 56 DES a TRT FU37UBB Reno a yas GATE OPEN 6 bawa blog 1 EC REARPANEL pas E CMN BAV99 Rats BNCB1 SE PALS 176 Re 1K E284 1K EAS 2 AA R278 R276 EAB REA Y AA 1K 1K 5 5 EXT REF 10MHz le 106 ODA REAR PANEL Lon Za TRIG IND A K Tm DIS 4 BN CB1 N PLAY Re K amp names Ti 9 i AD i zech TRIG IND B Ganz DEL GWO 4 Dm 2 80 rT 2 108 RD Ds _ 2 70 pr SFRONT 5 RRONT Sab HAN RL B 18 19 0 8 SASM ASMTG a eum f han R302 R300 R301 Ban HSB4HS 04 b Jan 68k T820 T6 8K 1820 3 Ja K vas K var 3 H AO Bfacea7a PBC pR nage F aP A o4 rep RAP 2 P29 3 b eb s Es Raa I t HO aa 1 4 02 d He 324 118 EXT ARMING peusav I REAR PANEL 3 R260 R26 REF OUT OSC BNC81 470 470 103 RE AR PA NEL R26 c NT 2261 CHO Ress na BAY Kall en 4 56P ASK BAVO R233 100 Res Tse b 0 7033 120 100 100K B AV93 IGR i OPTION 52V 52V PO RUBIDIU HENDE 52V p F0952X1 A B c D E F G H I J K L N N o P Q Appendix 9 17 This page is intentionally left blank 9 18 Appendix Trigger Level DACs Unit 1 sheet 4 6 E D D L D 0 D 11 11 i5 ga RET Loue EG 1840 av 44 10 H 100N 10 9 33P bag Rade Rain D 10K D 44 JE R BA V9 Nd C rent TRIGGER LEVELAO NE 532D 100 D4 Pas lo 149 B TON BAV 9 33P REAR Rp R330 Ra PANEL T K x RH TRIGGERLEVEL B O 100
16. 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 27 0 ohm 1 125W 100PPM 1208 RESISTOR 82 ohm 1 125W 100PPM 120 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 120 RESISTOR 82 ohm 1 125W 100PPM 120 RESISTOR 270 ohm 1 125W 100PPM 120 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 POTENTIOMETER 20kohm 10 V6 33285 1508 10 5 RESISTOR 2 20kohm 1 125 PPM 1206 RESISTOR 1 00kohm 1 O 125W 100PPM 1206 RESISTOR 1 80kohm 1 125W 100PPM 1508 RESISTOR 3 90kohm 1 125W 100PPM 120 RESISTOR 47 0kohm 0 5 0 125W RC 03G 1206 RESISTOR 220 kohm 1 125W 100PPM 1206 POTENTIOMETER 1kohm 20 3323P 1 102 RESISTOR Ki 30kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 Okohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 GE 1 0 158W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 RESIS
17. 125W 100PPM 1206 RESISTOR 125W 100PPM 1206 RESISTOR 2 125W 100PPM 1206 TOR 56 ohm 1 125W 100PPM 1206 RESISTOR RL GA og ohm 1 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 125W 100PPM 1206 125W 100PPM 1206 RESISTOR RESISTOR i Part Number 5322 157 61928 5322 290 34064 5322 290 34064 5322 265 41013 9322 265 64028 5322 290 34064 4031 105 70790 5322 290 34064 5322 290 60445 4822 051 51004 4822 051 51001 4822 051 51001 4822 051 10829 4822 051 51001 22 051 10121 4822 051 10121 4822 051 10106 4822 051 51002 4822 051 52702 4822 051 51001 4822 051 51001 4822 051 51002 4822 051 10106 4822 051 10109 4822 051 51001 4822 051 10182 4822 051 10109 5322 117 10968 4822 051 10822 4822 051 52201 4822 051 56801 4822 051 51002 4822 051 52201 5322 116 82262 4822 051 51001 5322 116 82262 4822 051 51001 5322 116 82263 5322 116 82263 9322 116 82263 5322 116 82263 5322 116 82263 4822 051 51502 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 4822 051 10339 4822 051 10339 4822 051 10339 5322 116 82263 5322 116 82263 5322 116 82263 4822 051 51002 5322 116 82263 5322 116 82263 9322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 4822 051 10339 4822 051 10339 4822 051 10339 5322 117 10858 4822 051 51001 5322 116 80448 4822 051 10829 4822 051 10829 4822 051 53301 4822 051 10109 2122 362 01083 2122 3
18. 4 16 Impedance Converter Stage 4 6 Input Amplifier Adjustment 6 5 io 6 7 Repair 5 16 Input Amplifier A Description 4 5 Input Amplifier B Description 4 8 Input Stage 4 5 1X 10X attenuator 4 5 AC DC coupling 4 5 Impedance Selector 4 5 Voltage Limiter 4 6 Internal Control Signals Repair 5 11 to 5 12 Internal Reference Output location 4 19 Interna Reference output Checking 2 5 Interpolator 4 12 Adjustment 6 5 to 6 7 K Keyboard Test 2 3 Keyboard codes 5 12 Keyboard scanning 4 4 4 17 L LCD drivers 4 4 Line voltage 1 2 Logical Circuits Description 4 16 M Measuring Functions Checking 2 6 Measuring Logic Repair 5 13 Microcomputer Circuits Description 4 16 Microcomputer Kernel 5 9 Microcontroller Repair 5 8 MTBRC 5 2 N Negative ECL Logical levels 5 4 O OCXO See PM 9690 or PM 9691 Operating Conditions 5 4 Oscillator Circuits Description 4 14 Oscillators Calibration 5 2 Oven Oscillator See PM 9690 or PM 9691 P PM 9611 Locationof 3 2 PM 9621 Adjustment 6 9 Amplifier 4 20 Block diagram 4 20 Checking
19. 4822 051 10569 4822 051 51001 4822 051 54701 4822 051 53302 5322 116 82261 5322 117 10858 4822 051 51003 4822 051 51004 4822 116 51167 5322 116 82261 4822 051 51002 5322 116 53071 4822 051 51001 4822 051 10105 4822 051 51004 4822 051 51003 4822 051 53303 4822 051 51003 4822 051 10182 4822 051 51002 4822 051 10561 4822 051 51002 4822 051 51002 4822 051 10829 4822 051 10569 4822 051 51001 4822 051 51004 4822 051 53901 4822 051 10561 4822 051 52202 4822 051 10561 4822 051 54702 4822 051 54702 4822 051 51003 4822 051 54702 4822 101 10792 4822 051 51003 4822 051 53301 5322 101 11074 4822 051 53302 4822 051 51001 4822 051 51001 4822 051 51002 5322 116 80448 4822 051 51002 5322 116 80448 4822 051 51001 4822 051 51003 4822 051 53301 4822 051 51001 x Pos R409 R426 R427 R428 R429 R430 R431 R432 R433 R435 R436 R437 R438 R439 R440 R441 R442 R443 R444 R445 R446 R447 R448 R449 R450 R451 R452 R453 R454 R455 R456 R460 R461 R462 R463 R464 R465 R466 R467 R468 R469 R470 R471 R472 R473 R474 R475 R476 R477 R478 R479 R480 R481 R482 R483 R484 R485 Description Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 680 22 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 27 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kA 1
20. 5322 130 60845 4822 130 60511 5322 130 60508 5322 130 40781 5322 130 40781 4822 130 60511 4822 130 60511 5322 130 40781 5322 130 44743 A oo PI NI GI O D OOO 0 20 000 DU 0 0 MIN NAAN NAN BAG OG ID 7000 MINO HID ANAN ANA ANAN OGOG MG MUI DOG ODON ANAN NANA AO MN NATAN 757000 MN ANN OH I 0 00090 X2 X4 CONNECTOR 3 POL F095 SINGLE ROW CONNECTOR 3 POL F095 SINGLE ROW 5322 290 60445 S 5322 290 60445 S Schematic Diagrams Appendix 9 11 Main Board Component Layout 9 12 Appendix M E aere reel Ji 160 012 u10 U17 N f Top Side 11 10 INSUT A 15 TQ 15 60 15 30 UN N 6 48 282 7 4 Rai aay lon fo ON Toni aa 15 49 N 2 Joon INP UT B 5V 50 OHM 0V 1 MOHM B 50 OHM 1 MOHM 50 OHM 1 MOHM 100N A 10 T02 5 C69 md 12 50 A 5V X10 Geh nsa DON AEN 10 7Q2 5 C6 10 nd A BVsAC OV DC Input Amplifier Unit 1 sheet 1 6 ORTA 18 C301 Too Joo 11 leg legg C2 Rss 10 Ei 1K C308 18U 6 3V R87 ALTER s 5 633 esa Jess am E ox TE 4 3 FENY oan B 10 SH P S RKB 8 27 vi 3 IEA m pe NACE G z20UH TMS AD 98687 120 RS78 116 442 Sp 12P a lem R101 100 R86 RST hw Ton hrs le fe Te 390 139 8 R63 R37 220 47 A 52V 1 8 D I _D61 sa c B AVS BAV99 N 100N 68 2013 T i 400
21. 7 NE 532D 148 100N GND s He VS ELO on TRIGGER LEVEL A 6 INPUT m PLIRER KRA R 5 45 H 2A TRIGGER LE VEL B N um 20K FULL SCALE B FULL SCALE A 4 R312 R309 4 68K 68K AGND AGND 3 3 L N 15 60 54 2 2 6327 150 680 6 3V MOON 18 GBUL B 3V 100N 1 1 15 307 MA GEI PI ten H 157 156 Jen Jo o Appendix 9 19 GPIB Interface amp Analog Output Unit 1 sheet 6 6 5 60 as 58US ANALOG OUT Cp any 20341 192 2018 ONCE 1 suse 100 Jo f 2 800 Pii rag Rp maro Md FULL SCALE N ACZ 4 7K 10K NE5XD ADJUST sr DIO2 Sp PAREM DIO3 Jig Ps DIO4 sig L ban 6 4 amp PR DIOS nsa 8291A 75160 BM 2 80 io DOG Ji9 por hs 0108 18 1920 212223 J19 GND 5 I Ras 1 62 100 YV CB50 casa cas L29 L28 10MHZ 100N 0 15UH 10N 0 15UH R490 Gi v ri 43 Ce DUM N M 19 pesa Le s N De Ava 100 Zo BF513 paa EIB BFRO2A 2 XF O0MHZ 2 XF 100MHZ 126 27 3 b Rama rsos 2364 Lene JossuH ES 47 Soun IS Fens R406 Ra07 367 1K 100 ker 123 5P fe 1235P Fe 1235p Mom 330 po A BEI 5MB s48 5MN 52V MA 52M 397 98 N 1008 400N B C D E F G H 1 J K L M N o P a Appendix 9 23 This page is intentionally left blank 9 24 Appendix Model PM6681R Rubidium Timebase Introduction A rubidium timebase atomic clock reference is now available in the Model PM6681R Timer Counter Analyzer This oscillator cannot be retrofitted Due to the power requirements an addition
22. C1 CAPACITOR 2 00pF 0 5 2pF 300V 5322 242 73307 5322 242 82118 5322 242 81692 5322 242 81692 5322 242 81694 5322 124 80335 C10 CAPACITOR 1nF 5 63V NPO 1206 4822 122 31746 C100 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C101 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C102 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C103 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C104 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 Ci06 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C107 CAPACITOR 82pF 5 63V NPO 1206 4822 122 31839 C108 CAPACITOR 82pF 5 63V NPO 1206 4822 122 31839 C109 CAPACITOR 22pF 5 63V NPO 1206 4822 122 32482 C11 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C110 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C111 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C112 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 C113 CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 9 4 Appendix Replacement Parts D U uuu u 0000 mun 000000 OMG MOM 000 0077 00707 OO E Description 8 10PF 300V 2 100V NPO 2M CAPACITOR 10 0pF 1 CAPACITOR 15 0pF CAPACITOR 15 ODF 2 8 JON NEO 2M CAPACITOR 1nF 5 6 CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R 1208 1206 CAPACITOR 1nF 5 63V NPO 1206 CAPACITOR 15 CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10
23. Counter Circuits Description 4 12 Counter Circuits Input Description 4 13 CPU Oscillator See 16 MHz Oscillator 10 2 Index Crystal Oscillators Adjustment 6 3 to 6 4 Calibration 5 2 D Delay Line 4 8 Display 5 11 Repair 5 12 Disposal of Hazardous Materials 1 2 Divider Description 4 13 E Electrostatic discharge see ESD EMI filter Location of 4 19 ESD 9 3 Event Delay 4 8 EXT ARM See External Arming External Arming Description 4 13 Input location 4 19 Input test 2 6 External Reference Calibration 6 3 Checking SEE 2 5 Description 4 15 Input location 4 19 F Fan Fan control 4 11 Replacing 3 3 Frequency Range test 2 4 Front panel Keyboard 4 4 LCD drivers 4 4 Functional levels 5 4 Fuses o s s 1 2 1 1 1 2 G Gate Open Checking 2 5 Description 4 13 Output location 4 19 GPIB communication Location of connector 4 19 GPIB Interface Description 4 18 Repair 5 18 Grounding 1 2 H HF input Checking 2 1 Replacing 3 3 Hold Off Checking 2 7 Description 4 13 VO Circuits Description
24. Indicates a potential danger that re quires correct procedures or practices in order to prevent personal injury This Timer Counter has been designed and tested in ac cordance with safety class 1 requirements for Electronic Measuring Apparatus of IEC publication 1010 1 and CSA C22 2 No 231 and has been supplied in a safe condition This manual contains information and warnings that should be followed by the user and the service technician to ensu re safe operation and repair in order to keep the instru ment in a safe condition WARNING The opening of covers or removal of parts except those to which access can be gained by hand is likely to expose live parts and accessible terminals which can cause death The instrument must be disconnected from all voltage sour ces before it is opened Remember that the capacitors insi de the instrument retain their charge even if the instrument has been disconnected from all voltage sources Grounding This instrument is connected to ground via a sealed three core power cable which must be plugged into socket out lets with protective ground contacts No other method of grounding is permitted for this instrument The ground symbol on the rear panel indicates where the protective ground lead is connected inside the instrument Never remove or loosen this screw 1 2 Safety Instructions When the instrument is brought from a cold to a warm environment condensation may cause h
25. LOSt Z or if you have made any repairs in the interpolator circuits Setup Connect the Pulse Generators output A to the input A of PM 6681 Connect the LF synthesizers to the EXT INput of the Pulse Generator Connect a 10 MHz aging at least 10 reference to the reference input of PM 6681 and the synthesizer Connect the the GPIB connectors of the PM 6681 LF synthesizer and Pulse Generator to the PC s GPIB card NOTE The fimer counter synthesizer and the pulse gener ator should not have the same GPIB address none of them should have address O or 30 this is used by the PC e Adjustment Turn on the timer counter the synthesizer and the pulse generator If the timer counter shows a flashing ZC al lost Z press the preset button until this message disappears NOTE The calibration should be done when the counter has been on for more than 20 minutes If you start the ca libration program before 20 minutes has passed since power on the program will wait the required time Insert the discette labeled Test and Calibration program for PM 6681 into the 31 2 disc drive on the PC Start the calibration program from the DOS command prompt with the command pathj CALVER81 Suppo sing you use the A drive this might look like CN gt a CALVER81 The first displayed screen on the PC will show you the nee ded hardware and software to run the calibration program It also shows the bus a
26. Timer Counter Analyzers PM6661 PM6651R amp PM6681R 676 AF FLUKE 4822 872 20116 June 2003 Second Edition Fluke grants permission for the U S Government to reproduce copies of this manual on the condition that the legend Reproduced with Permis sion be legibly displayed on the copies This material is not for resale It is limited to Government use only and cannot be copied for any other purpose H o GENERAL INFORMATION This manual contains directions for use that apply to a number of models In order to simplify references to certain models the follow ing designation system 1s used throughout the manual PM6681 stands for PM6681 PM6681R and PM6681R 676 AF PM6681R stands for PM6681R and PM6681R 676 AF The PM6681R 676 AF is a model supplied with the following features PM6681R base model Prescaler PM9624 2 7 GHz Rackmount kit PM9622 Reference output option PM9671B Refer to the respective type numbers in the Operators Manual for specifications and other information not found in this manual New options and deviations from the original design are collectively treated in Chapter 9 Appendix Below is a summary of the changes Unit 1 The main printed circuit board Unit 1 has recently been redesigned due to obsolescence of a number of integrated circuits Designa tions found in circuit descriptions schematic diagrams and parts lists in the first eight chapters refer to the original
27. ya aao j 6 666 K U18 UE y 2050 ps 3r B A js 4 H Tao 28 D dd 5 is RELAYS 131071 Jan 23 131071 03 6 s 15 INTHE jA12 25 que T 12 INPUT dals 41 i s ia AMPL Jaja 28 po 9 Hie Jais 29 D BAI 13 4 AG11020 10 9 Us LL 6 Vot esso URS DA Zoto J17 WT Hi 3 Jaz He tot Ha M7 11 Ha DIS AT PLAY H7 amp R377 TP 2 KEY 1 BOARD Jas 2 MH 4 AG11020 1 26 ud fa 317 IND II AC11021 MM Fg SSMS nas Oo ues D B M MEAS D ja A4 G LIB ILA 2 UST E 14 89 1 3 Hs L a i CS DAC A gg 12 ACOS AC11021 SSC 30 ACT1020 Drawings amp Diagrams 8 7 sulelDeig 9 SBUIMEIG 8 8 BAD Le 3295 JAT MIR pito 360 GH GK 1819 au UO pejunoui VId 94 JO epis Woljog sjueuoduoo pamopeyg RATS ROTE jg En Gite K DH I D 184857 C4b7 zu M P IR585 Z VES um uzg 36 um RE 58 Inr RIS FR3861R197 B599 Leen quM SELLER i NE Mero d 20 PEOR DOE DON 1 i SA SEN elel wi ig mi mil R 186 f FSR 157 N Ri RRA SHIN RE 4 MA DV a jno ej jueuoduio pIeoq 2ISEg B C D E 4031 100 53030 PM 6661 COUNTER CIRCUITS 1506 DP Gm 10102 0104 1032i 0127 6128 C129 0130 0131 0132 10133 11 Te I ee
28. 0 Appendix Replacement Parts DDD AA BOG NANA NAA NNN DD C00 NNN NAA 000000 ANAN DAN NN GOOG NNN NNN NNN NANN ONN DD DIO ISI D D OG NNN BOG BOG NNN NNN DOG OG be Pos RESISTOR 220 00hm 1 125W 100PP RESISTOR 6 80kohm 1 125W W OPP RESISTOR 47 0kohm 0 5 0 125W RC RESISTOR 6 80kohm 1 125W 1 PPM RESISTOR 820 ohm 1 125W 1 DEM RESISTOR 820 ohm 1 125W 10 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 150 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 POTENTIOMETER 20kohm 10 3323P 1 203 10 RESISTOR 68 0kohm 1 125W 100PPM 1206 RESISTOR 330 kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 POTENTIOMETER 20kohm 10 33286 1203 49 RESISTOR 68 0kohm 1 125W 100PPM 120 RESISTOR 3 30kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 3 30kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 0 0 00 oC 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 Kohm 0 1 0 25W MPR24 RESISTOR 10 Kohm 0 1 0 25W MPR24 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 0 ohm BYGLING RC 01 1206 RESISTOR 10 0kohm 1 0 125W SIS 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1
29. 0 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 330 ohm 1 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 27 0 ohm 1 125W 100PPM 1206 RESISTOR 3 30kohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 00 00 00 00 70 00 00 00 ohm ohm ohm ohm 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 22 ohm 1 125W 100PPM 1206 RESISTOR 22 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 180 00hm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 56 0kohm 1 125W 100PPM 1206 RESISTOR 27 0 ohm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G U 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 Pa
30. 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 330 kohm 1 125W 100PPM 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W RESISTOR 2 20kohm 1 125W 1 RESISTOR 2 20kohm 1 125W RESISTOR 10 0kohm 1 0 125W RESISTOR 10 0kohm 1 0 125W RESISTOR 100 ohm 1 0 125W COO OO 000 50 DO o 3333133 zee E R On a NN O o e 52201 10857 4822 051 51502 5322 116 80448 5322 116 82264 4822 051 51001 2422 549 42404 4822 051 4822 051 53301 4822 051 51004 4822 051 51002 5322 117 10858 4822 051 56801 4822 051 56801 5322 117 10858 4822 051 51003 5322 117 10858 5322 116 80448 5322 116 82262 4822 051 10829 4822 051 51002 4822 051 10829 4822 051 10829 051 10271 1855 051 51003 4822 051 51003 322 101 11074 4822 051 52202 4822 051 51002 4822 051 10182 4822 051 53902 5322 117 10857 4822 051 52204 4822 101 10792 4822 051 53302 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 53901 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 822 051 51003 4833 051 10478 4822 051 51003 4822 051 51004 4822 051 51004 4822 051 10109 4822 051 53901 4822 051 51002 4822 051 10278 4822 051 10278 4822 051 10278 4822 051 51002 4822 051 10109 4822 05
31. 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 196 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 196 1 8 W 100PPM 1206 Resistor 0 Q RC 01 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 820 2 1 1 8 W 100PPM 1206 Resistor 56 Q 196 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 196 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 1 1 8 W 100PPM 1206 Resistor 100 Q 196 1 8 W 100PPM 1206 Resistor 100 Q 196 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 196 1 8 W 100PPM 1206 Resistor 270 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 196 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 196 1 8 W 100PPM 1206 Resistor 100 Q 196 1 8 W 100PPM 1206 Resistor 1 00 MQ 196 1 8 W 100PPM 1206 Resistor 560 Q 1 1 8 W 100PPM 1205 Resistor 2 70 kQ 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 196 1 8 W 100PPM 1206 Resistor 68 Q 1 1 8 W 100PPM 1206 Resistor 68 Q 1 1 8 W 100PPM 1206 Resistor 15 0 kQ 196 1 8 W 100PPM 1206 Resistor 15 0 kQ 196 1 8 W 100PPM 1206 Resistor 560 22 1 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PP
32. 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 270 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 1 80 kQ 1 1 8 W 100PPM 1206 Resistor 3 90 kQ 1 1 8 W 100PPM 1206 Resistor 47 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 220 kQ 1 1 8 W 100PPM 1206 Potentiometer 1kQ 20 3323P 1 102 Resistor 3 30 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 k 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 4 7 Q 10 1 4 W RC 01 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 2 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 2 7 Q 5 1 4 W RC 01 1206 Resistor 2 7 Q 5 1 4 W RC 01 1206 Resistor 2 7 Q 5 1 4 W RC 01 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 Q 1 1 8 W 100PPM 1206 Resistor 100 2 1 1 8
33. 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 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 R111 RESISTOR 100 ohm 1 0 125W 100PPM 1206 R19 RESISTOR 120 ohm 1 0 125W 100PPM 1206 R21 RESISTOR 100 ohm 1 0 125W 100PPM 1206 Part Number 5322 268 24116 5322 268 14141 5322 268 24116 5322 268 14141 5322 268 24116 5322 268 14141 5322 268 24116 2422 536 00389 2422 549 43133 2422 535 94048 2422 549 43133 2422 549 43133 2422 536 00388 2422 549 43133 2422 536 00387 2422 549 43133 2422 535 94048 2422 549 43133 2422 535 94048 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 9340 022 10701 4822 051 21001 4822 051 51001 4822 051 31001 4822 051 53302 4822 051 10109 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 10121 4822 051 51001 9 30 Appendix Replacement Parts PM9671B MU BOG OM be OO AOG OG NND NNN MMW Pos Description R23 R24 R25 R26 R27 R28 R29 R3 R30 R31 R4 R41 R43 R44 R45 R46 R47 R49 R RESISTOR 3 30kohm 1 ach ODE EM gig RESISTOR 47 ohm 1 0 1W 100PPM O RESISTOR 5 60kohm 1 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 3 30kohm 1 125W
34. 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 3 30kohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 5 60kohm 1 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W OWA 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 Q 125W 100PPM 1206 RESISTOR 10 0 o hm 1 1 0 125W 100PPM 1206 RESISTOR 5 60kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W Z 1206 RESISTOR 3 30kohm 1 125W 100PPM 1 RESISTOR 47 ohm 1 0 1W JOOPEM 0805 RESISTOR 5 60kohm 1 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 SISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100 6 RESISTOR 100 ohm 1 0 152W 10 RESISTOR 100 ohm 1 0 RESISTOR 3 30kohm 1 150 V 100PPM 1206 SISTOR 47 ohm 1 0 100PP RESISTOR 5 60kohm 1 SC 100PPM RESISTOR 1 50kohm 1 0 125W 100PPM 120 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 125W 100PPM 12 RESISTOR 10 0 ohm 1 0 125W 100PPM 12 RESISTOR 10 0 ohm 1 0 125W 100 M 12 RESISTOR 100 ohm 196 0 125W 100PPM 12 RESISTOR 100 ohm 196 0 125W 100PPM 12 C CMOS 410390 SMD 5016 IC PC74HC74 S IC CMOS
35. 11422 R 180 Spring washer KBA 3 2 ST FZ DIN137 482253080173 P 54 Spring Cabinet 5322 492 64745 R 182 Spring washer KBA 4 3 ST FZ DIN137 4822 530 80076 P 56 Rubber foot SJ 5018 BLACK 5322 462 44434 184 Lock washer YT4 3 ST FZ DIN6798A 4822 53080083 P 58 Bracket stand up PM6680 81 5322 401 11348 R 190 Nut M6M 04 ST FZB 4822 505 10326 P 62 Connector COAX KC 79 35 5322 267 10004 200 Receptacle 140825 2 2 8X0 8 5322 268 10275 P 63 COAX Connector 5322 265 10264 R 201 Protect sleeve 2 8mm N 94610 5322 321 40117 P 66 Toroid core 30nH RCC9 6 3 4065 VIOLET 5322 526 10545 P 202 Cable clip reel SRB 2 5T M4 5322 358 50107 P 84 Mains filter 1A FS3514 1 07 5322 121 42352 208 FXF tube 3B 4 3x2 L 7 2 4822 526 10097 90 PCB guide PM6680 81 85 FOR PRESC 5322 401 11347 P 68 64 66 62 22 59489 22 HE 1 HJ E Mii 1 jal 4 A Vi 1 H 7 t E Lei 65 A 1 YA H A E E 89 f Lei Y B I a Replacement Parts Mechanical Paris 7 3 10 notre 20O Ge G r un 2 d AR a OC EA LL JA mn O rt uu M _ ooo 7 4 Replacement Parts Mechanical Parts O O 8 Pos B1 B2 B3 B4 BO C1 C2 C3 C4 C5 Description PC B 1 ASSY Screw MRT 3X08 ST FZB TX Lock washer YT3 2 ST FZ DIN6798A Crystal 16 MHz PM5781 HC 49 U Crystal 10 MHz PM9677 HC 49U Crystalfilter 100 MHz MF UB Crystalfilter 100 MHz MF UB Crystal 10 MHz HC 49U Capaci
36. 12 5X25 Capacitor 68 F 20 6 3V SOLID AL Capacitor 100 nF 10 63V X7R 1206 Capacitor 68 F 20 6 3V SOLID AL Capacitor 2200 F 20 16V RAD 2M 12 5X25 Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 2 20 uF 20 6 3V 3 2X1 6 MOLD Capacitor 15 pF 20 6 3V 6 0X3 2 MOLD Capacitor 6 80 uF 20 16V 6 0X3 2 MOLD Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 6 80 uF 20 16V 6 0X3 2 MOLD Capacitor 6 80 uF 20 16V 6 0X3 2 MOLD Capacitor 33 F 20 10V SOLID AL Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 100 nF 10 63V X7R 1206 Capacitor 68 F 20 6 3V SOLID AL Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 68 F 20 6 3V SOLID AL Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 68 F 20 6 3V SOLID AL Part Number 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 126 10324 4822 126 10324 5322 121 42515 5322 121 42515 5322 124 11418 4822 122 33496 4822 126 10324 4822 126 10324 5322 121 43756 5322 121 43756 4822 051 10008 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 5322 121 44302 5322 121 42515 5322 121 43756 5322 121 43756 4822 122 33496 4822 122 33496 4822 122 32442 4822 122 31981 4822 126 10324 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31772 4822 122 33496 4822 124 40723 5322 124 10455 4822 122 33496 5322 124 10455 4822 124 40
37. 1206 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 47pF Se 50V NPO_ 0805 A BAV99 SOT23 DIODE 0 10 T2 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 54 SOD87 DIODE MY 400V 1 5A SOD87 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 5A SOD87 DIODE BYD17G 400V 1 5A SOD87 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 54 SOD87 DIODE BYD17G 400V 1 5A SOD87 DIODE BYD17G 400V 1 5A SOD87 DIODE BYD17G 400V 1 5A SOD87 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 5A SOD87 DIODE BYD17 V 1 54 SOD87 DIODE 0 10A BAV99 SOT23 DIODE BYD17G 400V 1 5A 30087 DIODE BYD17G 400V 1 5A SOD87 CONNECTOR 10 POL 22 14 2104 4455 BC M OR PC B CONTACT PIN MINICOAX FOR PC B BUSHING MINICOAX FOR PC B CONTACT PIN MINICOAX FOR PC B Part Number x 5322 126 13638 3 5322 126 13638 S 2222 861 15339 2222 861 15829 5322 122 34123 5322 126 13638 5322 126 13638 5322 124 10687 5322 126 13638 5322 124 10687 5322 126 13642 5322 124 11418 2222 861 15479 5322 130 34337 5322 130 34337 9338 122 40701 9338 122 40701 5322 130 34337 9338 122 40701 9338 122 40701 5322 130 34337 5 9338 122 40701 9338 122 40701 9338 122 40701 9338 122 40701 5322 130 34337 S 9338 122 40701 9338 122 40701 5322 130 34337 9338 122 40701 HH OOJONO C202 n LD Oi n3 N NI O co NI R o IO NANO UN 141 5322 268 24116 5322 268 14141 Appendix Replacement Parts PM9671B 9 29 J5 BUSHING MINICOAX FOR PC B J6 CONTACT PIN MINICOAX FOR PC B J6 BUSHING MINICOAX F
38. 1206 4822 051 51004 R585 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R586 RESISTOR 33 0 ohm 1 Vt JOOPFM 1206 4822 051 10339 R587 THERMISTOR 2 2Kohm 3 0 25W NTC 5322 116 30458 R588 RESISTOR 100 ohm 1 0 125 W 100PPM 1206 4822 051 51001 R589 RESISTOR 1 00Mohm 1 0 125W 100PPM 1206 4822 051 10105 R59 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R590 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 4822 051 51002 R591 RESISTOR 100 ohm 1 0 1W 100PPM 0805 5322 117 12497 B R592 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R593 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 4822 051 51002 R594 RESISTOR 820 ohm 1 125W 100PPM 1206 5322 116 82264 R595 RESISTOR 100 ohm 1 0 125W 100PPM 1206 4822 051 51001 R598 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R599 RESISTOR 2 20kohm 1 125W 100PPM 1206 4822 051 52202 R6 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 5322 117 10858 1206 R60 RESISTOR 470 ohm 1 125W 100PPM 1206 4822 051 54701 R600 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R601 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R602 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R603 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R604 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R605 RESISTOR 100ko hm 1 0 125W 100PPM 1206 4822 051 51004 R606 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R607 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R608 RESISTOR 56 ohm 1 125W 100PPM 1206 48
39. 2 7 Divider 4 20 ECL ouiput 4 20 Level detector 4 21 Limiter 4 20 Location of Repair Replacing PM 9624 Adjustment Amplifier Automatic Gain Control Block diagram Checking Detector Dividers Limiter Location of Positive Voltage Regulator Repair Replacing PM 9625 Adjustment Amplifier Block diagram Checking First divider Limiter Location of Repair Replacing Second divider Voltage regulators PM 9678B Adjustment Calibration Checking Location of Repair Replacing PM 9690 Adjustment Calibration Checking Location of Repair Replacing PM 9691 Adjustment Calibration Checking Location Of Repair Replacing Positive ECL 2 5 3 3 Logical levels 5 4 Power Supply Description 4 10 Power supply inlet Location of 4 19 Power On Test 2 2 4 23 Primary Circuits Power Supply 4 10 Repair 5 6 Probe Comp View O
40. 47 1 1 8W 100PPM 1206 Resistor 47 Q 1 1 8W 100PPM 1206 Resistor 180 Q 1 1 8W 100PPM 1206 Resistor 2 7 kQ 1 1 8W 100PPM 1206 Resistor 47 kQ 1 1 8W 100PPM 1206 Resistor 2 2 kQ 1 1 8W 100PPM 1206 Resistor 270 O 1 1 8W 100PPM 1206 Resistor 330 O 1 1 8W 100PPM 1206 Potentiometer 1 kQ 10 72X Resistor 47 kQ 1 1 8W 100PPM 1206 Resistor 4 7 kQ 1 1 8W 100PPM 1206 Resistor 3 3 kQ 1 1 8W 100PPM 1206 Resistor 220 kQ 1 1 8W 100PPM 1206 Resistor 1 kQ 1 1 8W 100PPM 1206 Resistor 470 kQ 1 1 8W 100PPM 1206 Resistor 33 kQ 1 1 8W 100PPM 1206 Resistor 560 Q 1 1 8W 100PPM 1206 Resistor 27 Q 1 1 8W 100PPM 1206 Resistor 1 8 kQ 1 1 8W 100PPM 1206 Resistor 3 3 kQ 1 1 8W 100PPM 1206 Resistor 470 O 1 1 8W 100PPM 1206 Resistor 82 Q 1 1 8W 100PPM 1206 Resistor 47 kQ 1 1 8W 100PPM 1206 Resistor 10 kQ 1 1 8W 100PPM 1206 Resistor 33 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 100 O 1 1 8W 100PPM 1206 Resistor 1 kQ 1 1 8W 100PPM 1206 Resistor 1 kQ 1 1 8W 100PPM 1206 Resistor 120 O 1 1 8W 100PPM 1206 Resistor 120 Q 1 1 8W 100PPM 1206 Resistor 330 O 1 1 8W 100PPM 1206 Part Number 5322 157 52986 5322 157 52986 5322 157 52986 5322 116 80444 5322 116 80444 5322 116 80444 4822 051 10229 4822 051 10229 4822 051 10229 4822 051 10229 4822 051 10229 4822 051 10229 4822 051 10271 5322 116 80438 5322 116 80438 4822 051 10828 5322 116 80431 4822
41. 4822 051 10829 Replacement Parts Main Board 7 9 Pos R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R90 R91 R92 R94 R95 R96 R97 R98 R99 R100 R101 R102 R103 R104 R105 R108 R109 R110 R111 R112 R113 R116 R118 R124 R125 R126 R127 R128 R129 R131 R132 R133 R134 R135 R136 R137 R138 R139 7 10 Description Resistor 150 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 470 Q 1 1 8 W 100PPM 1206 Resistor 390 Q 1 1 8 W 100PPM 1206 Resistor 390 Q 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 68 Q 1 1 8 W 100PPM 1206 Resistor 68 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 15 0 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 15 0 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 1 0 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 100 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W
42. 5014 SMD IC BUS TRANSEIV 75ALS176D SO 8 SMD Optocoupler CNX82A SEMKO SOT231 IC ANA SMPS CTR UC3842AD 5014 IC REF 2 5V TL4311 D 508 IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC86D 4XEXOR2 SO14 SMD IC NE532D DUAL S0 8 IC 14088M 5014 IC CMOS 74AC08D 4XAND2 8014 SMD IC NE532D DUAL SO 8 Transistor BF513 03A20V SOT23 Transistor BF513 03A20V 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 BSR12 0 1A 15V SOT23 Transistor BC847B 1A45V SOT23 Transistor BC857B 1A45V SOT23 Transistor BC857B 1A45V SOT23 Transistor BC369 1A 20V TO92 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BF513 03A20V SOT23 Transistor 25 MA BFR92A 20V SOT23 Transistor BFG97 0 1A 15V 50223 Transistor 25 MA BFR92A 20V SOT23 Transistor BFG97 0 1A 15V 0223 Transistor BFS17 05A 15V SOT23 Transistor 25 MA BFR92A 20V SOT23 Transistor BFG97 0 1A 15V 0223 Transistor 25 MA BFR92A 20V SOT23 Transistor BFG97 0 1A 15V 50223 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BSV52 0 1A 12V SOT23 Transistor BC847B 1A45V SOT23 Part Number 5322 209 71553 5322 255 41313 5322 209 86176 4822 209 80591 4822 209 81397 5322 209 62119 5322 255 41313 5322 209 81236 4822 209 81397 4822 209 62796 5322 209 71553 5322 209 81264 532
43. 5322 130 34337 5322 130 33764 5322 130 34337 5322 130 32076 5322 130 32076 4822 256 30139 5322 256 60311 5322 290 60445 5322 290 60445 5322 290 60445 5322 263 50101 5322 290 60445 5322 263 50101 5322 290 60445 5322 321 62336 5322 265 44074 5322 267 60148 5322 265 44074 5322 265 44074 5322 280 60557 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 157 61918 5322 157 61928 000020 202020 07070 202000 ODD UDD ODD O YD NNN HNN NT ONN 020000 TOM NOG MON MON ANTI 000000 000 NAN 00000 OAO 020000 C000 O NNN NANN NNN 020000 000 NNN NON OG br Pos Descrinti L11 Li2 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25 L26 L27 L28 1 29 L3 L30 L31 L32 L33 L39 L4 L40 L41 1 42 L43 L45 L46 LA7 L48 L49 L5 L50 L51 L52 L53 L54 L55 L56 L57 L58 L59 L60 L61 p L8 CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE JE 20 B82412 A1102 M CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 33uH TSL0809 330K1R2 CHOKE 10mH B82722 J2102 N1 1A CHOKE 10 00UH NEWPORT 18R103 CHOKE 10 00uH NEWPORT 18R103 CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz C
44. 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R F 20 6 3V 6 0X3 TM MOLD 1508 CAPACITOR In 10 63V X7R 1206 CAPACITOR OF 5 63V NPO CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 220pF 5 63V NPO CAPACITOR 22nF 10 200V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R 1206 1206 1206 1206 1206 1206 1206 1206 1206 1206 CAPACITOR 12 0pF 296 100V NPO 2M CAPACITOR 15pF 5 63V GR ETA CAPACITOR 100n 10 6 CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nE 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R 1206 Part Number 5322 125 50049 4822 122 31823 4822 122 31823 4822 122 31746 4822 122 33496 4822 122 33496 4822 122 31746 5322 124 11418 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31971 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31965 5322 126 14081 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31056 4822 122 32504 4822 122 33496 4822 122 33496 4822 122 33496 4822 12
45. 70SNC SMD 32K 8 S028 OPTOCOUPLER CNX82A SEMKO SOT231 IC ANA SMPS CTR UC3842AD 8014 IC REF 2 5V TL4311 D 508 ECHO 74AC02D 4XNOR2 5014 SMD IC CMOS SMD 74AC86SC SO14 21NP EXOR IC NE532D DUAL SO 8 IC 14C88M 5074 IC CMOS 74AC08D 4XAND2 8014 SMD IC NE532D DUAL SO 8 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR BSR12 0 1A 15V SOT23 TRANSISTOR BSR12 0 1A 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC857B 1A45V SOT23 TRANSISTOR BC857B 1A45V SOT23 TRANSISTOR BC369 1A 20V TO92 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR _BF513 03A20V SOT23 TRANSISTOR 25 MA BFR92A 20V S0123 TRANSISTOR BF513 03A20V SOT23 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR _ BFG97 0 1A 15V S0223 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR BFG97 0 1A 15V 80223 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR BFG97 0 1A 15V 80223 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR 25 MA BFR92A 20V SOT23 TRANSISTOR BFG970 1A 15V 80223 TRANSISTOR BEST OSA 15V S0123 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 1 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BSV52 0 1A 12V BOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1248V S0123 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V
46. B COUPL ATT STISTOP SET g o SKE SKIS SKA SK22 SK27 Sp M ur P204 GR201 D 201 STAND RED PCF8576 N BY IND p204 HLMP K150 GR202 0202 TRIG R202 YELLOW B201 E201 IND B P204 390 CQV13 6 5V 6 R203 GR203 0203 TRIG YELLOW IND A P204 390 COV19 6 GR204 D204 xl a 5 GATE YELLOW IND P204 cove 3 6 DISPDR SGL P204 SDA paga 4 5V 43 T 12 po 2d ON P204 SK55 STAND BY R205 4 N v mad LL t 4 7 P204 SK56 LOCAL PRESET sw o bo nn fm PRESET P304 SK57 BACKLIGHT m i BAGK LIGHT i La cup a7 DLi00 P204 0 i i sv oed py p 5V 5V GND 32 14612 14 46 30 I 202 201 P204 10N 10N ic fryse Leg es POF2576 yc 282111315173034 u201 PCFB578 14 7 8 9 sao P204 u202 PCF8578 11 7 8 9 10 0 A 8 c p E F G H I J K L M N 0 p 5 Drawings amp Diagrams 8 17 50400 02 TP4 1 3 GHz HF input PM 9621 Component layout 8 18 Drawings amp Diagrams 1 3 GHz HF input IC 1C1 IC2 IC3 Type PC1652G 2 3 4 8 6 7 U833BS 4 5 6 NE532D 4 8 1 2 N 11 L4 AND LE ARE PARTS OF THE PCB 51 48 mn an TUON 10 L7 LB 41 42 ca 10N 10N 10N R60 120 z ja artoa p TS7 9 aars 4 IN 3 3P p N D R42 pai A 2 27 100 GRE Zepp 2 BAT17 P BAT17 4 u833BSEJS R41 Gid cas 580 1N 22P F e he 1K Cap 31 13 TON PC1652G Tr 15P Watt 7 22 K GR11 45 U BAR16 1 16 L6 10N L 1P 10N R32 Ran 4 7K c22 R26 R31 6 47K 47K GR R25 pi K LC a 2 2K BAT17 2 7K z
47. DIL 8 LOW OFFSET 9322 170 76682 IC SOCKET 68 POL PLC 5322 255 40677 IC PC74HC4353T 020 4822 209 62805 IC OP AMP OP177GP DiL 8 LOW OFFSET 9322 170 76682 IC OP AMP OP177GP DIL 8 LOW OFFSET 9322 170 76682 IC DAC 12BIT AD7545AKN DIL20 5322 209 62107 IC DAC 12BIT AD7545AKN DIL20 5322 209 62107 IC OP AMP OP177GP DIL 8 LOW OFFSET 9322 170 76682 IC OP AMP OP177GP DIL 8 LOW OFFSET 9322 170 76682 IC NE532D DUAL SQ 8 5322 209 71553 HEAT SINK 16 K W LODBAR T0219 5322 255 41313 IC 12 V UA7812UC 1A TO 220 5322 209 86176 IC 1 50 A LM317T TO 220 4822 209 80591 IC 1 50 A LM317T TO 220 4822 209 80591 IC REG TL431C LP 092 4822 209 81397 IC OP AMP OP177GP pis LOW OFFSET 9322 170 76682 HEAT SINK 169K W LODBAR TO22 5322 255 41313 IC 1 50 A LM337T 19830 5322 209 81236 IC REG TL431C LP 1092 4822 209 81397 IC OP AMP CA3140AM CA3140 AM BIMOS 508 9322 114 39682 IC CMOS 74AC74 D 2xD FF 50 14 SMD 5322 IC NE532D DUAL SO 8 5322 209 71553 IC DIG UPD7210D IEC BUS GPIB CONTROLLER 9322 023 60682 IC SN75161AN 5322 209 81842 IC TL7770 50W 5322 209 30397 IC SN75160AN 5322 209 81807 IC CMOS 74AC74 D 2xD FF 80 14 SMD 5322 IC CMOS SMD 74AC11 SO14 31NP AND 9322 166 59682 IC DIG ECL 100304PC SXANDINAND2 PDIP24 5322 209 33638 C SOCKET 28 POL 821581 1 2422 486 80183 IC DIG ECL 10033106 SXDFLIP FLOP PCC28 5322 209 33604 IC REF 2 50 V MC1403U DIL 8 5322 209 82864 IC CMOS 74AC20SC SMD 5014 2XNAND4 5322 209 90427 IC BUS TRANSCEIV 75ALS176D SO 8 SMD 5322 209 33171 IC SRAM CY62256LL
48. FILTER A E G D E F G H i 1 K L Drawings amp Diagrams 8 5 Basic board Component layout Top side L3 6374 i H i i kan Lie R202 R2 R2 R 22703 9990 OG m E E al b U31 U32 i 24 26 777 2326 I N I R325 Do EI EJ E Eee R327 036 U25 U26 U28 U23 ees N e 1030 m iR217 R 223 R213 J C88 C87 1 P1 i PoE EE Pod A N D TO a cost 8 6 Drawings amp Diagrams A B C D E 4031 100 53030 PM6681 CPU amp MEMORY LOGICAL CIRCUITS IDENT2 IDENT 10ENTO PRESCALER sreo 11 15 08 DRE 12VREG 12 P20 14 P20 is P20238 9 P20 15 P20 1 P20 5 P20 sa GN zy 13 5 03 DEN ASN R192 R193 R194 SN 45V Hay 10K 10K 39K R203 10K 10 SSR 429 R204 TESTA 3 100N LI 100K Tii ye ule ha R195 10K Bi 3 A cos E I Te eres I Ii gri 15 02 pu pu GPU REG2 Y R564 IMB OR TIL Fee 10K ACHO PO 0 ADOIP3 0 L I era Dora Nan p TE TE 4 A0H2P0 2 AD2 P3 2 71 05 DE Ann EP AD3 P3 3 3 02 DIG ACH4 PD 4 ADAIPS 4 ACHSIFO 5 Lee ADS P3 5 ACHGIP0 6 ADG P3 6 ACHTIPO 7 Qn ADTIP3 7 Zon a P1 0 ADBIP4 0 Gg ADSIP4 1 Pra AD10IP4 2 ym PWMUPLO gt SE Ep PWM2IP1 4 ADTAPAS 6 p P1 5 1 S AD14 P 4 6 3 AD15IP4 7 pg TDXIP2 0 HSI O asas RDX P2 1 HEIA BBB D EXTINTIP22 g5 HSOAMSLZ Ad DONE T2CLKIP2 3 HSO S HSI 3 oo GEULSRES T2RSTIP2 4 HSO 0 PWMUIPZ S H50 1 5 P2 5 HS0 2 T
49. HII 0900 33 HI HH 0 09 IE IE IE IE IE DE IE IE IE IE IE IE IE IE 3 9 9 DE TEHDEN x DATE 94 06 14 TIME 12 51 25 IDENTITY CODE SM 999 x x TASK VERIFICATION OF INTERPOLATOR CALIBRATION x DE DIE IE H HI IH 20 H H IE IE H IC H H DE IH IH 3 H H H 3 DE HI H HI IE IE IE IC e IE HEIE IE DEDEDE N Identification Query gt x PHILIPS PM6681 0 MAIN X1 02 Mar 08 1994 13 53 01 GPIB X1 13 Mar O x x PM9626 0 gt Eeee IE DEDEDE 2 2 3 A 2 2 9 IE IE IE IE IE IE IE IE IE IE IE IE IE IE IE IE IE IE H IE 0 0 IE IE IE 0 229 203 2 DE IE IE IEIE IE IE IE IE IE IE IE IE 3 IE IE IE 3 9 9 IE IE IE DE IE IE IE IE x T C CAL PLS s MIN SDEU MEAN SDEU MEAN SPEC MAX SDEU MAX SPEC P F x DE IE IE IE EIE 3 IE IE 3 2 IE IE IE IE IE 3 IE 3 HO IE IE H IE 3 IE H 3 3 HE 29 IC 3 29 IE IE IE IE IE 3 IE IE IE DE IE IE 3 IE H 3 IE 3 IE IE H IE EIE IE IE DEDEDE DE DE 2 3 IE 3 9 3 JE IE 3 DE IE 22 4 29E 009 2 16E 011 2 91E 011 3 00E 011 3 99E 011 4 00E 011 P IE IE IE IE DEDEDE IE IE IE IE IE 2 9 2 IE IEIE IE IE IE IE HE IE IE IE IE IE IE IE IE IE 09 9 IE IE IE IE IE IE IE IE IE IE IE DE IE IE IE IE IE IE IE IE IE IE IE 9 IE IE IE HE 3 HE HH 3 IE IEIE IE IE IE IE IE yA Calibrated at Pulse used Minimum value Mean value Mean value Maximum value Maximum Pass temperature to calibrate measured by measur
50. M and N and check the frequencies 0 1 1 5 10 10 and 10 MHz the waveform si nusoidal and the level gt 1 V rms Adjustments No adjustments can be made The output frequencies are locked to the in ternal external timebase depending on the source selected via the front panel or by means of a GPIB command The default timebase source is the built in reference oscillator Replacement Parts PM9671B Pos Description Part Number x 15 LABEL STATUS 25 4X12 7 POLYIMIDE 5322 454 13144 P 27 CONNECTOR 2 POL 640442 2 AWG26 IDT 5322 265 41371 S C1 CAPACITOR 8 2nF 50V X7R C0805C822K5RAC 2022 552 05597 C11 CAPACITOR 220pF 5 50V NPO 0805 4822 122 33575 S C12 CAPACITOR 820pF 15 50V NPO 0805 2238 861 15821 C13 CAPACITOR 10nF 20 50V X7R 0805 5322 122 34098 S C14 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C15 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S Ci6 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 5322 124 10687 R C17 CAPACITOR 100nE 20 25V X7R 0805 5322 126 13638 S C19 CAPACITOR 100nF 2096 25V X7R 0805 5322 126 13638 S C2 CAPACITOR 8 2nF 50V X7R CO805C822K5RAC 2022 552 05597 C21 CAPACITOR 47pF 5 50V NPO 0805 2222 861 15479 C22 CAPACITOR 150pF 596 50V NPO 0805 2222 861 15151 C23 CAPACITOR 1nF 20 50V X7R 0805 5322 122 34123 S C24 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C25 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C26 CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD 5322 124 10687 R C27 CAPACITOR 100nF 20 25V X7R 0805 5322
51. Not used EBK les 1 5K R27 F 47 04 BAVSS 14 R28 100nF 400 10 MHz Input L6 Hw od BLM21A1025 Ji R18 45V 120 A KS A VAA 2 cs uso Rai LE sip D a z Hola 100 c21 C22 5 4Tp 150p Asad HE V E R18 Not usad 22 14 2104 o z Dey 3 3 47 Y Davos 2 Cab El z 2 92 Heap mmr 82 luse 29 99 yeaa nr 22 ve 49 MORF RAB T 8 25 nez 0005 SG 56 Hcizs T 100nF 100 e t 15 100nF Z 05 Soe T BYDITG R30 1 L 100 04 JN D6 I BFG1BA BYD17G R29 10 25 D8 05 A l BFG18A BYD17G REO C L 100 ba RR ZA BYDITG Ras 10 ce 6 Bu 18Y 5 A a Haze 0 1 MHz cr BA 220n MiniCaax 3 68 164 T A uta HO128 ci JAA 100nF MiniCoan 3 026 T 6 Bu 46V 5V A pass ce JSA 100nF MiniCoax 3 LE HN lt BLMZ1A1025 35 100nF R81 U D11 BRGIGA L BYD17G 4 TuH N 100 RAE C32 22p R70 1 100 RT 105 BEGIGA PR BY017G 4 y D10 BAV39 REB Asa 100 10 Lao 12V lt BLM21A1025 45 q00nF R81 19 D14 os A L BFGTEA BYD17G 4 7uH l 0 1 10 eu c42 m2 n 33pF Bap Netused RED C 100 R91 1 100 Zx D15 O asa BYD17G 47 I CG 013 BAV95 mF RBB RES 100 10 Liz 12V lt BLM21A1028 55 DINF R101 Lit 7 rJ BAGIGA ZS EyDI7G 4 7uH 100 o EKF c52 azp RIO L LI 100 Dis 12 A L BEGIGA BYD17G 47 n7 015 BAVSS 54 R108 R109 100nF 100 10 PM6671B Circuit Diagram amp 3 18V 10 MHz Car J8A 100nF Min
52. P 7AHC126T SMD 5014 IC CMOS PC74HC126T SMD SO14 Part Number 4822 051 53302 5322 117 12505 4822 051 10562 4822 051 51502 5322 117 12505 4822 051 51001 4822 051 10109 4822 051 53302 4822 051 51001 4822 051 51001 5322 117 12505 4825 051 51001 822 051 51502 2355 117 12505 4822 051 51001 4822 051 10109 4822 051 10562 22 051 51001 4822 051 51001 4822 051 51502 4822 051 51001 4822 051 53302 5322 117 12505 4822 051 10562 4822 051 51502 5322 117 12505 4822 051 51001 4822 051 10109 5322 117 12505 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 53302 5322 117 12505 4822 051 51502 5322 117 12505 4822 051 51001 4822 051 10109 4822 051 10109 4822 051 51001 4822 051 51001 9337 147 20701 5322 209 71589 5322 209 17393 5322 209 17393 000 NANANA BON NN 020000 DOG NAN OG 020000 NAN ODO 000 020000 DOG 000 OG be Schematic Diagrams PM9671B Appendix Schematic Diagrams PM9671B 9 31 PM6671B Component Layout N Q T Ys I O ral En R109 R108 ES Raa Rea ca fe Ek E E co 8 o E E E 8 au cx BB Ras R28 E O OE EG ER gje ID17 3210 Did D11 UA POR H kr R28 0 O ut C46 Mudo Ee PI J ja ele s i OL a 5g 8 Fu D OL r 9 32 Appendix Schematic Diagrams PM9671B BLMZ1A1025 L4 12V lt BLM21A1025 E 3 3K vaa C13 R1 13 R24 F E 4TuH 47 Heras 190 bii EXpF e R22 es P
53. SOT23 HEAT SINK 13 50KIW KS35 10 28EL 2x2 3 RANSI POW MOS 4A STPANC80ZEP TO220FP TRANSISTOR 0 5A BC807 25 45V SOT23 TRANSISTOR 0 5A BC817 25 45V SOT23 TRANSISTOR 0 5A BC817 25 45V SOT23 TRANSISTOR 0 5A BC817 25 45V SOT23 TRANSISTOR 0 5A BC817 25 45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BCP51 1 5A 45V SOT223 TRANSISTOR 0 5A BC817 25 45V SOT23 TRANSISTOR 0 5A BC807 25 45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC857B 1A45V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BC847B 1A45V SOT23 TRANSISTOR BFS17 05A 15V SOT23 TRANSISTOR BSR12 0 1A 15V SOT23 Appendix Replacement Parts 9322 130 52701 4822 130 10025 5322 209 33169 5322 209 62422 5322 209 33101 9322 167 94682 5322 209 71553 5322 209 33108 5322 209 33102 5322 209 71553 4822 130 60686 5322 130 44743 5322 130 44743 4822 130 60511 5322 130 60508 5322 130 60508 5322 130 44593 5322 130 40781 4822 130 60686 5322 130 60647 4822 130 60686 5322 130 60647 4822 130 63069 5322 130 60647 4822 130 63069 5322 130 40781 5322 130 60647 4822 130 63069 5322 130 40781 5322 130 60647 4822 130 63069 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 44336 4822 130 60511 4822 130 60511 822 130 60 4822 130 5322 255 4 9322 164 04701 5322 130 60845 4822 130 42804 4822 130 42804 4822 130 42804 4822 130 42804 4822 130 60511 5322 130 62639 4822 130 42804
54. V17 N 560 BC857B 3 16 i D AHi LM337 MAT NMI Gap 2 5V 5 9V BA STAND BY IND DISPLAY amp 15U 6 3V 100N I I 18 KEYBOARD Drawings 8 Diagrams 8 13 Basic board Component layout A rrn i Poe f HI M a ii j ma Naa ii i IU Ta Sa i H ta i R i mui i N bi Ju sud i i H rc HHHH H ret ete H H i i i pi bib 5 i i 2 U H i i Pod i i lal i EH i E i L Kd i id mi i i i Top side nei rem i Bottom side i i i i i i i m i an jo S i 2 i Dues i ZS j D i EJ i f i H H i i i END m i ex S HER SOA i i BS Di Large IN E i CES UTU i i i i i i TL N munana ee 8 14 Drawings amp Diagrams 11 10 12 06 15 09 ZAS BAT i207 12 07 12 06 12 07 12 06 12 08 12 06 RAB GPIB interface amp Analog out Unit 1 sheet 6 6 H J K L 5V o kusa T Jew U34 PWM 12 R378 R379 D gt is E 14 C 0 d 31 4 7K 10K NE532D AC32 Een t R386 RZ 04 98V 1 d Ll L ees Kj ciao FULL SCALE 1 100 100 ADJUST 5V 33N KD any m C188 R380 R382 C181 10N SA hka 10K 100N 52v 100N ZERO Raed 2 Rags D 52V 20K GPIB INT c194 ADJUST E R383 3 aa DREG 100N 330 5 JeLock DACKE CRD N Od WR TRIG RESET PAD ASO EOI b GPIBINT CENE US SROO GER eg RENO GE
55. X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 27 pF 5 63V NPO 1206 Capacitor 27 pF 5 63V NPO 1206 Capacitor 6 8 pF 0 5 pF 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 82 pF 5 63V NP0 1206 Capacitor 82 pF 5 63V NPO 1206 Capacitor 22 pF 5 200V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 10 pF 1 8 10PF 300V Capacitor 15 pF 2 100V NPO 2M Capacitor 15 pF 2 100V NPO 2M Capacitor 1 nF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 10 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 220 pF 20 200V Capacitor 100 nF 10 63V X7R 1206 C
56. design The func tional descriptions are correct on the whole if you make a few substitutions A new set of schematic diagrams and a new replacement parts list are added in Chapter 9 Appendix Instruments having serial numbers gt 784919 belong to the new generation The model PM6681R 676 AF has only been produced with the new Unit 1 board so the serial number is irrelevant Model PM6681R The model PM6681R introduces an ultra stable rubidium atomic clock reference Option PM9671B Reference output unit offering six buffered 1 Vims outputs with four different standard frequencies 3 x 10 MHz 1 x 5 MHz 1 x1 MHz and 1 x 0 1 MHz New OCXOs The PM9691 has been redesigned and a version with very high stability the PM9692 has been introduced III This page is intentionally left blank IV 1 2 3 4 Contents Safety Instructions Caution and Warning Statements 1 2 Grounding nsa nasa 1 2 Disposal of Hazardous Materials 1 2 Line Voltage 1 2 Performance Check General Information 2 2 Required Test Equipment 2 2 Preparations 2 2 Front Panel Controls nasa 2 2 Power On Test 2 2 Internal Self Tests 2 2 Keyboard Test 2 3 Short Form Specification Test
57. except 12VREG are switched off However some special volta ges are not because the oven oscillator should be on and the ON STANDBY logic should function therefore the pri mary power circuits will never be switched off PM 6681 has only a secondary power switch A relay K1C disconnecis the load of the 5 V and 5 2 V at stand by Because the power circuits always must have a load on the regulated voltage a bleeder resistor R349 is always connected to 5 V At standby the counter only needs 12 V and to get enough current of this voltage a certain current of the regulated 5 V must be used 5 V controls the switching on off of 12 V and 7 V When 5 V is on V48 conducts and the base of V18 will be approximately 11 V and the transistor will conduct i e 12 V will be on If there is no 5 V V48 will be off and the base of V18 will be 12 V thus blocking the 12 V The ON STANDBY logic controls relay K1A which opera tes as described above J15 have three functions Normal K1A controlled by the ON STANDBY logic Removed KIA allways open Ground K1A allways closed Fan The temperature is senced by counter circuit U58 which outputs an analog signal to the u controller UG The u con troller also senses the temperature on the main PCA via gt 12VREG gt 12V U70 amp U71 gt V gt HSV U72 amp V49 D56 BT w U73 U74 amp VIT oy Figure 4 13 Power supply Hardware Functi
58. in your wastebasket Return used batte ries to your supplier Chapter 4 Circuit Descriptions Block Diagram Description General The PM 6681 Timer Counter consists of three main units Front unit Main board unit Rear panel unit Several options can be added these are Prescalers 1 3 GHz PM 9621 2 7 GHz PM 9624 4 2 GHz PM 9625B and 4 5 GHz PM 9625 Oscillators TCXO PM 9678B and oven oscillaiors PM 9690 and PM 9691 Rack mount adapter PM 9622 Rear panel inputs PM 9611 81 The chassis of the counter consists of a front piece molded in aluminum an aluminum rear panel and three aluminum profiles thai hold the front and rear panels together This unit can be slid into the aluminum cover of the instrument The front unit contains all functions needed for the user communication A flat cable connects the front unit to the main board unit and the molded front piece screws onto the two aluminum profiles 4 2 Block Diagram Description Most functions such as the following are placed on the main board Input amplifiers with trigger level circuits Power supply Measurement logic Microcomputer circuitry GPIB bus Analog output External reference input External arming input Some outputs such as the TRIGGER LEVEL and PROBE COMPENSATION VIEW outputs are directly mounted on the main board The rear panel unit is an aluminum panel with a num
59. it reach normal operating temperature Setup Connect the counter to the line power Switch on the counter Press PRESET then press ENTER Connect the signal generator to the HF input PM 6681 Input C FREQ C Signal 1000 25 MHz Amplitude 5 9 0 5 mV RMS Table 6 11 HF input setup e Adjustment Turn the potentiometer R61 fully counterclockwise See Figure 6 11 Check that the GATE indicator stops blinking Turn R61 slowly clockwise until the GATE indicator starts blinking The input frequency 1000 25 MHz shall now be display ed 1 3 GHz HF input PM 9621 6 9 4 2 GHz HF input PM 9625B l is not possible to make any adjustments to the PM 9625B Therefore if you suspect any faulis we recommend you to send the unit to the factory for repair Contact your local Philips or FLUKE service center To verify the 4 2 GHz HF input a sweep frequency synthesi zer Wiltron 6717B 20 is needed 6 10 4 2 GHz HF input PM 9625B 4 5 GHz HF input PM 9625 It is not possible to make any adjustments to the PM 9625 Therefore if you suspect any faults we recommend you to send the unit to the factory for repair Contact your local Philips or FLUKE service center To verify the 4 5 GHz HF input a sweep frequency synthe sizer Wiltron 6717B 20 is needed Chapter 7 Replacement Parts Introduction Standard Parts Electrical and mechanical replacement parts can be obtai ned through
60. oscillator Remove the tape from the DIP switch Adjust the trimmer to its mid position about 12 turns from ei ther end position Read the frequency on the PM6681R PM6685R Nominal 10 000000 MHz If the frequency is too low set the DIP switches to the next higher voltage range If the frequency is too high set the DIP switches to the next lower voltage range Timmer range v DIP switen number 1 on 8 of 4l2lslalslelz7 le 26 34 Jolololilolololol 32 39 Jol1ilolililolol ol 35 43 1 ojo 1 1 0 0_0 40 47 joja la 110 01 41 50 Ja lola lola lala lo Table 9 2 Coarse adjustment by means of DIP switches Check that the new trimmer range is about 2 Hz around 10 MHz Adjust the trimmer according to Fine adjustment above i Trimmer for fine tuning MODEL XXXXXXX FREQ 10 MHz BIN se m Switches for coarse adj E 27 Fig 9 9 Adjusting the optional oscillator frequency Appendix New OCXOs 9 27 This page is intentionally left blank 9 28 Appendix New OCXOs Option PM9671B Introduction This optional reference output unit replaces the extra 5x10 MHz 1x5 MHz outputs of the PM6681R and offers more frequencies 1x0 1 MHz 1x1 MHz 1x5 MHz and 3x10 MHz with higher output level 1 Vrms versus 0 6 Vrms The standard 10 MHz 0 6 Vrms output of PM6681R is not affected Performance Check Connect an oscilloscope to the outputs marked I J K L
61. point col lector of V25 is the common point for the high and low fre quency paths of the input frequency To Probe comp A R116 amp R508 L1 y R101 Buffer stage Y To Common switch A driver stage V22 an output stage V23 and a current generator V26 forms an amplifier with high output cur rent This amplifier is used to get a linear output in the 1002 load resistor R101 over a swing of 2 V From the output of this second amplifier stage the signal goes back to the operational amplifier pin 3 via divider R27 to R29 and R167 Trim potentiometer R167 sets the gain of the low frequency path equal to the high frequency gain about 0 9 Capacitor C30 is connected to U1 pin 1 and 8 to achieve stable operation The trim potentiometer R18 be tween pin 1 and 5 on U1 is used to adjust the offset volt age of the operational amplifier The channel A filter connected to the output of the second amplifier stage is a 100 kHz LC filter It consists of coil L1 and two capacitors C29 and C41 in parallel Two relay contacts KBA and K5B controls the filter The filter output is connected to the input of the comparator stage The output of the amplifier stage is also connected to the rear panel via the amplifier U95 By using this output called PROBE COMPENSATION A it is possible to compensate a probe connected to the counter This voltage is also con nected to an analog input in the u controller This makes it po
62. repair The prescaler consists of the following parts see Figure 4 31 Limiter The limiter consists of a 6 dB attenuator and a PIN diode attenuator to achieve constant input amplitude to the amplifiers Amplifier Five amplifier stages are divided into three blocks One block consists of one amplifier Two blocks consists of two amplifiers each and an AGC control Automatic Gain Control AGC Helps the amplifiers to retain a constant output amplitu de Dividers Two dividers divide the input signal freguency by 16 Detector Detects whether the level of the input signal is high enough to ensure correct measurement and if not blocks the output signal from the prescaler Positive Voltage Regulator Positive voltage supply for the amplifiers Hardware Functional Description 4 21 e Prescaler 4 5 GHz PM 9625 Voltage Voltage regulator regulator 2 HN La Second GaAs hybride Figure 4 32 PM 9625 Block diagram The PM 9625 prescaler cannot be repaired at a local workshop It must be sent to the factory for repair The prescaler consists of the following parts see Figure 4 32 4 22 Hardware Functional Description Limiter The limiter consists of a 6 dB attenuator and a PIN diode attenuator to achieve constant input amplitude to the amplifiers Amplifier The amplifier consists of 4 cascade coupled integrated GaAs amplifiers each amplifies approximately 8 dB
63. the point is on sheet 1 coordinate A1 Colored Areas The coloured areas in the diagrams represent following functions Integrated circuits ma Trim points test points or jumpers Connectors 8 2 Drawings amp Diagrams 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 Inside the symbol at the top is an abbreviated description 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 output inverts the signal The component name is written below the symbol The signal flow through the circuit is always 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 number above and their value or component name below A resistor contained in a resistor network has a frame drawn around it and one of the pin numbers is written to the left or be low it Component Numbers etters C he numbers are only sequential numbers This page is intentionally left blank Drawings amp Diagrams 8 3 e maypa A AIDA R60 RTE R491 R361 sweibeig 9 S UMEIO p 8
64. the counter identify the options and accessories included If there are no labels the WARNING Capacitors inside the instrument can counter contains an uncompensated crystal oscillator and no hold their charge even if the instrument has options The following labels exist been separated from all voltage sources PM 9611 81 Rear Panel Inputs PM 9621 1 3 GHz HF input PM 9624 2 7 GHz HF input PM 9625 4 5 GHz HF input PM 9678B TCXO PM 9690 Oven Oscillator PM 9691 Oven Oscillator The location of these optional parts is illustrated in Fig 3 2 Make sure the power cord is disconnected from the counter Turn the counter upside down Loosen the screw A at the bottom and the two screws B in the rear feet Grip the front pane and gently push at the rear Pull the counter out of ihe cover Rear panel inputs Figure 3 3 Remove the screws and push out the counter from the cover Reinstalling the Cover Push the counter gently back in the cover NOTE Be sure that the screen shielding on the front make contact to the cover Turn it upside down Install the two screws A at the bottom Install the two rear feet with the screws B to the rear Optional panel oscillator Figure 3 2 Location of the boards in the counter 3 2 Removing the Cover Fan Disconnect the power cable Remove the cover from the counter Remove the two screws A and nuts B from the fan
65. time ts longer than for normal replacement parts Mechanical Parts Pos Description Part Number w Pos Description Part Number 10 PC B 1 ASSY PM6681 BAS81 5322 21491332 P 100 Washer 4 0X10X2 PA6 6 5322 532 52364 P 12 PC B 2 ASSY PM6680 DISP80 5322 218 70109 P 102 Washer 9 5X13X2 3 PM6680 81 85 4822 532 10222 P 18 Textplate kit PM6681 5322 456 10027 R 109 High voltage WARNING 5322 456 90366 P 20 Rubber keypad PM6680 81 85 5322 276 80389 R 110 Insulate plate 5322 466 62465 P 22 Cover assy PM6680 81 5322 447 92194 P 120 Front shield PM6680 81 5322 462 50466 P 25 Rear plate PM6681 5322 447 92202 P 122 Shielding strip 610mm 99 210 5322 466 62077 P 26 Fan ASF84171 12VDC 80X80X25mm 5322 361 10539 150 Screw MRT 3X06 ST FZB TX 4822 502 11658 P 27 Connector 2 POL 640442 2 AWG26 IDT 5322 265 41371 156 Screw MRT 4X16 ST FZB TX 5322 502 21491 P 34 Profile support 5322 460 60542 P 160 Screw MFT TT 3X08 STFZB TX 4822 502 11713 P 36 Shield PM6681 5322 459 11184 P 164 Screw MFT TT 4X12 STFZB TX 5322 502 13553 P 38 Shield cover PM6681 5322 447 92203 P 166 Screw MRT TT 3X08 STFZB TX 4822 502 11691 P 39 Shield PM6681 5322 459 11185 P 168 Screw MRT TT 4X16 STFZB TX 5322 502 13552 P 40 Shield cover PM6681 5322 447 92204 P 172 Screw MFT 4X10 ST FZB TX 532250213641 P 50 Rearfoot Cabinet M 90 5322 462 41719 R 173 Screw MFS 4X35 ST FZB 5322 502 21492 P 52 Bottom foot Cabinet M 90 5322 462 41554 R 176 Screw RTK ST3 5X10 FZB TX 532250230703 P 53 Bracket Cabinet 5322 401
66. to measure ihe DC levels according to Table 5 8 IC2 pin 6 7 4 5 V TS5 c 4 5 V TP8 TP3 0 57 V Table 5 8 DC voltages PM 9621 Connect the signal generator to the HF input of the counter Set the input freguency to 100 MHz and set the amplitu de to 15 dBm 40 mVRMS Connect the oscilloscope to BU7 pin 4 Verify that the amplitude is 800 mV p p and that the pe riod time is 2 56 us frequency 390 kHz The DC level should be 3 8 V If everything seems all right the fault is probably caused by the base unit Connect the DMM to TP3 and TP4 GND Disconnect the input signal Check that the DC voltage drops 200 mV If this last measurement is OK you can skip the Overvolta ge Protection Control Overvoltage Protection Control Connect the signal generator to the HF input of the counter Set the input freguency to 100 MHz and set the amplitu de to 13 dBm 1 VRMS Check the DC voltages according to O voltage O Tma 100450mv Corect TP1 300 mV TP1 amp TP2 Short circuit in one of GR3 GR4 or GR11 Table 5 9 DC voltages Overvoltage protection control PM 9627 Connect the DMM to IC2 pin 2 Check that the DC voltage is 300 mV Check that the amplitude at IC1 pin 1 is one third of the amplitude at BU1 Check that the amplitude at IC1 pin 5 is 300 mVp p Check that the amplitude at TS1 collector and TS2
67. 0 R301 R302 R303 R304 R305 R306 R307 R308 R309 R310 R311 R312 R313 R314 R316 R317 R319 R320 R321 R322 R323 R324 R325 R326 R327 R328 R329 R330 Description Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 27 Q 1 1 8 W 100PPM 1206 Resistor 3 30 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 22 Q 1 1 8 W 100PPM 1206 Resistor 22 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 180 0 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 27 Q 1 1 8 W 100PPM 1206 Resistor 220 0 1 1 8 W 100PPM 1206 Resistor 470 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 6 80 kQ 1 1 6 W 100PPM 1206 Resistor 6 80 kQ 1 1 8 W 100PPM 1206 Resistor 820 Q 1 1 8 W 100PPM 1206 Resistor 820 Q 1 1 8 W 100PPM 1206 Resistor 150 Q 1 1 8 W 100PPM 1206 Resistor 150 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 10
68. 051 10828 5322 116 80433 4822 051 10339 4822 051 10109 5322 116 80448 5322 116 80448 4822 051 10181 5322 116 80437 5322 116 80446 5322 116 80434 4822 051 10271 5322 116 80438 5322 101 14299 5322 116 80446 5322 116 80445 5322 116 80439 5322 116 80436 5322 116 80427 5322 116 80447 5322 116 80441 4822 051 10561 5322 116 82262 4822 051 10182 5322 116 80439 5322 116 80444 4822 051 10829 5322 116 80446 5322 116 80428 4822 051 10339 4822 051 10229 5322 116 80426 5322 116 80427 5322 116 80427 4822 051 10121 4822 051 10121 5322 116 80438 x Replacement Parts PM 9621 7 17 Pos R63 R64 R65 R66 TP3 TP4 TSI TS2 Description Resistor 100 1 1 8W 100PPM 1206 Resistor 470 kQ 1 1 8W 100PPM 1206 Resistor 220 kQ 1 1 8W 100PPM 1206 Resistor 0 2 RC 01 1206 Flat Pin 2 8mm E184 8 lesa sn band Flat Pin 2 8mm E184 8 lesa sn band Transistor BFQ67 SOT23 Transistor BFQ67 SOT23 7 18 Replacement Parts PM 9627 Part Number 5322 116 80426 5322 116 80447 5322 116 80436 4822 051 10008 5322 290 34064 5322 290 34064 5322 130 42567 5322 130 42567 x Pos TS3 TS4 TS5 TS6 TS7 TS8 TS9 TS10 Description Transistor BC847B 1A45V SOT23 Transistor BC847B 1A45V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BFS17 05A 15V SOT23 Transistor BFT92 25MA 15V SOT23 Transistor BC847B 1A45V SOT23 Transistor BC847B 1A45V SOT23 Part Number 4822 130
69. 0PPM 1206 Resistor 10 0 k2 1 1 8 W 100PPM 1206 Potentiometer 20 kQ 10 3323P 1 203 10 Resistor 68 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Potentiometer 20 k 2 10 3323P 1 203 10 Resistor 68 0 kQ 1 1 8 W 100PPM 1206 Resistor 3 30 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 3 30 k2 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 kQ 0 1 1 4 W MPR24 Resistor 10 kQ 0 1 1 4 W MPR24 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 0 Q RC 01 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Part Number 4822 051 51003 5322 116 82262 4822 051 53302 4822 051 51001 5322 116 80448 4822 051 10229 4822 051 10229 4822 051 51002 4822 051 10181 4822 051 51002 4822 051 56801 5322 116 82262 4822 051 52201 4822 051 54701 4822 051 51002 5322 116 80448 4822 051 51002 4822 051 10339 4822 051 10339 4822 051 51003 4822 051 51003 4822 051 10121 4822 051 10121 4822 051 10339 4822 051 10339 4822 051 52201 4822 051 52201 4822 051 10682 4822 051 10682 5322 116 82264 9322 116 82264 4822 051 51501 4822 051 51501 4822 051 51003 4822 051 51003 4822 051 51003 5322 101 11074 4822 051 56803 4822 051 51003 5322 101 11074 4822 051 56
70. 0V N750 1206SMD CAPACITOR 5 6pF 0 25pF SOV N750 1206SMD CAERCITOR 8 2pF 0 25pF 50V N750 1206SMD CAPACITOR 100nF 10 P XB 1206 CAPACITOR 1nF 5 63V NPO 120 CAPACITOR 100nF 10 sav X7R 1206 CAPACITOR 1nF 5 63V NPO 1206 CAPACITOR 220pF 5 63V NPO 1206 CAPACITOR 33 0nF 10 50V X7R 1206 CAPACITOR 33 0nF 10 50V X7R 1206 CAPACITOR 33 0nF 10 50V ND 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 47nF 10 250V y OLYGARB CAPACITOR 330nF 20 250V CAPACITOR 220pF 5 63V NPO 1206 CAPACITOR 18 0pF 2 0 18PF 300V CAPACITOR 19QuE 2095 SO 2M 8 2x11 CAPACITOR 220pF 5 63V NPO 1206 CAPACITOR 100pF 5 63V EN 1208 CAPACITOR 22pF 5 63V N CAPACITOR 4 70nE 10 63V TE 1206 CAPACITOR 4 70nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nE 10 63V X7R 1206 CAPACITOR 470uF 20 35V 2M 12 5x20 CAPACITOR 470uF 20 35V 2M 12 5x20 CAPACITOR ink 5 63V NDO 1206 n CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 18 0pF 2 0 18PF 300V CAPACITOR 190 OnF 10 63V X7R 1206 CAPACITOR 12pF 5 63V NPO 1206 CAPACITOR 12pF 5 63V NPO 1206 CAPACITOR 100nF 19 M XTR 1206 CAPACITOR 100pF 5 63V NPO 1206 CAPACITOR 100nF 10 SV XTR 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 10 0nF 10 63V X7
71. 1 51001 4822 051 51001 4822 051 51002 4822 051 51001 5322 117 10858 4822 051 51001 4822 051 51002 5322 116 21222 4822 051 54702 4822 051 51003 4822 051 52203 4822 051 10822 4031 002 15010 4822 051 51002 5322 117 10858 4822 051 52202 4822 051 51003 4822 051 51003 4822 051 52202 4822 051 51003 5322 116 80448 4822 051 10339 5322 116 80448 4822 051 10339 5322 117 10969 5322 116 82261 4822 051 51003 4822 051 52202 4822 051 52202 4822 051 51003 4822 051 51003 4822 051 51001 LD 000 000 M DON 020000 0000000 NOG AND NAN NA 020000 OOO 000000 NNN 020200 20000 NNN DDD OO NNN ODO DO 000 0000 000 NIN NAN AANO NN OO Pos Description Part Number R51 RESISTOR 330 ohm 1 125W 100PPM 1206 4822 051 53301 R514 RESISTOR 100 ohm 1 0 125W 100PPM 1206 4822 051 51001 R515 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R516 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R517 RESISTOR 10 0kohm 1 0 125W 100PPM 1208 4822 051 51003 R518 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R519 RESISTOR 33 0 ohm 1 125W 100PPM 120 4822 051 10339 R52 RESISTOR 470 0Kohm 0 5 0 125W RULE 5322 117 10858 1206 R520 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R521 RESISTOR 10 0 chm 1 0 125W 100PPM 1206 4822051 10109 R522 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R523 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R524 RESISTOR 2 20kohm 1 125W 100PPM 1206 4822 051 52202 R525 RESISTOR 220 00h
72. 10 SK49 skad sksd ski ska SK53 skat sa ska sK16 SK2 ska sko ski SK25 skad x skie ska D202 SK12 ska 48220 ska SK56J by p201 8 16 Drawings amp Diagrams Display amp Keyboard board Unit 2 A B c D E F G H 4 K L M N 0 P 5 PM6681 DISPLAY 8 KEYSOARO 4031 100 48120 BASIC BOARD v3 v4 va vi va v5 y VT 11 19 P204 21 P204 231P204 25 P204 27 P204 29 P204 31 P204 33 P204 1620114201 DATA ENTRY DATA ENTRY DATA ENTRY DATA ENTRY DATA ENTRY DATA ENTRY DATA ENTRY DATA ENTRY 4 5 6 X0 XN 1 3 8 7 SK1 SK32 Ska SKIS SKAR Sg SK50 SK34 Ho gt P204 DATA ENTRY DATA ENTRY DATA ENTRY SELEGT SELECT DATA ENTRY DATA ENTRY DATA ENTRY i 3 SET s SET l 0 10 SK2 SK10 Stu SKIS DO Sum SK53 Hi gt P204 PROCESS PROCESS PROCESS PROCESS RECALL ENTER MATH K L SK3 SKi6 SKG SK52 H2 P204 PROCESS g START sid Ha 2 P204 FUNCTION FUNCTION MEAS TIME MEAS TIME RESTART MEAS TIME FUNCTION FUNCTION lt gt SET DIS PL HOLD SINGLE AUX MENU MENU SKE skt2 SK18 SE San SKa EKAT Sei H4 gt 8 P204 EXT REF INPUT A INPUTA INPUT A TRIGGER LEVEL INPUT A INPUT A FILTER IMP SLOPE SETA COUPL ATT SKE SKB SKi9 SKU SK29 SKI SK46 H5 gt a P204 SWAP INPUT B INPUT B CHECK HOLD OFF A lt gt B IMP COM A ON lt SKT SK20 SK23 SK28 skas O 7 M yg gt a O P204 TRIGGER LEVEL TRIGGER LEVEL INPUT B INPUT B TOT HOLD OFF AUTO SET
73. 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 5 6 pF 0 5 pF 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 18 pF 2 0 18PF 300V Capacitor 18 pF 2 0 18 pF 300V Capacitor 12 pF 5 63V NPO 1206 Capacitor 12 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1 nF 5 63V 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 1 pF SOT23 Diode 0 10A BAT18 35V 1 pF SOT23 Diode 0 10A BAT18 35V 1 pF SOT23 Diode 0 10A BAT18 35V 1 pF SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAR42 30V SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 15A BAS45 125V DO 35 Diode 0 10A BAR42 30V SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Dio
74. 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 47 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 390 Q 1 1 8 W 100PPM 1206 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 470 0 kO 0 5 1 8 W RC 03G 1206 Resistor 18 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 10 MQ 10 1 4 W RC 01 1206 Resistor 47 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 4 70 k 1 1 8 W 100PPM 1206 Resistor 10 0 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 100 1 1 8 W 100PPM 1206 Resistor 270 Q 1 1 8 W 100PPM 1206 Part Number 4822 051 10822 4822 051 51001 4822 051 51003 4822 051 10339 4822 051 52202 4822 051 51003 4822 051 51003 4822 051 52202 4822 051 51003 5322 116 80448 4822 051 10339 5322 116 80448 4822 051 10339 4822 051 51003 4822 051 52202 4822 051 52202 4822 051 51003 4822 051 51003 4822 051 51001 4822 051 51001 4822 051 10339 4822 051 10339 4822 051 51003 4822 051 51003 4822 051 10339 4822 051 10339 4822 051 10109 4822 051 51004 4822 051 10339 4822 051 52202 4822 051 52201 4822 051 10339 5322 116 80448 4822 051 51003 4822 051 51003 5322 116 80448 5322 116 80448 5322 116 80448 4822 051 10121 4822 051 10339 4822 051 51002 5322 117
75. 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PPM 1206 Resistor 120 Q 1 1 8 W 100PPM 1206 Resistor 10 MQ 10 1 4 W RC 01 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 10 MQ 10 1 4 W RC 01 1206 Resistor 10 0 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 Q 1 1 8 W 100PPM 1206 Resistor 12 0 kQ 1 1 8 W 100PPM 1206 Resistor 8 20 kQ 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 680 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 27 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 27 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Replacement Parts Main Board Part Number 4822 051 51501 4822 051 10339 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 54701 4822 051 53901 4822 051 53901 4822 051 52201 4822 051 10689 4822 051 10689 5322 116 80448 5322 116 80448 4822 051 51002 4822 051 10829 5322 116 80448 5322 116 80448 4822 051 10829 4822 051 10829 4822 051 10829 4822 051 10159 4822 051 10829 4822 051 10159 4822 051 51001 4822 051 51001 5322 116 80448 5322 117 10967
76. 100PPM 1206 5922 117 10971 L30 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R29 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L31 Choke 4 70 uH 10 MLF3216A4R7KT 4822 157 70975 R30 Resistor 47 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10857 L32 Choke 4 70 LH 10 MLF3216A4R7KT 4822 157 70975 R31 Resistor 330 kQ 1 1 8 W 100PPM 1206 5322 117 10969 L33 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R32 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1208 5322 117 10858 L39 Choke 452 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R34 Resistor 56 0 kQ 1 1 8 W 100PPM 1206 5322117 10971 L40 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R35 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 Lat Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R36 Resistor 100 k2 1 1 8 W 100PPM 1206 4822 051 51004 L42 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R37 Resistor 2 70 kQ 1 1 8 W 100PPM 1206 4822 051 52702 Lag Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R38 Resistor 1 80 kQ 1 1 8 W 100PPM 1206 4822051 10182 L45 Choke 452 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R39 Resistor 220 0 Q 1 1 8 W 100PPM 1206 4822 051 52201 L46 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R40 Resistor 1 50 kQ 1 1 8 W 100PPM 1206 4822 051 51502 LAT Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R41 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 4822 051 51002 L48 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R42 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 Lag Choke 482
77. 1074 4822 051 52203 4822 051 51003 4822 051 10181 4822 051 51002 5322 116 30457 4822 051 10181 5322 117 10971 051 10569 4822 4822 051 51001 4822 051 54701 4822 051 52202 5322 116 82261 5322 117 10858 4822 051 51003 4822 051 51004 4822 051 52201 4822 051 52201 4822 051 52201 4822 051 52201 4822 051 52201 5322 117 10858 5322 116 82261 4822 051 51002 322 117 11786 4822 051 51001 4822 051 10105 4822 051 51004 4822 051 51003 4822 051 53303 al 4822 051 51003 4822 051 51004 4822 051 10182 4822 051 51002 822 051 10561 4822 051 51002 4822 051 51002 4822 051 10829 4822 051 10569 4822 051 52702 4822 051 51001 4822 051 51004 4822 051 53901 4822 051 10561 4822 051 52202 4822 051 10561 4822 051 54702 4822 051 54702 4822 051 51003 4822 051 10182 4822 051 54702 4822 101 10792 4822 051 51003 4822 051 53301 5322 101 11074 4822 051 53302 4822 051 51001 4822 051 51001 4822 051 51002 CO MU OOM OOO NN NIN OG GM GOM ODO DODD GOGOING O O D NM O NNN MAN MU 00200 ODO MUI MUNI 020202 OG DOG ODO 020000 ODD DON NNN OG Pe Pos Description Part Number x R39 R RESISTOR 220 0chm 1 125W 100PPM 1206 RESISTOR 47 0kohm 0 5 0 125W RC 03G 1206 5322 117 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 820 ohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 FILTER EMI BLM31A601SPT Z 6000hm 0 2A 1206 RESISTOR 330 ohm 1 125W 100PPM 1206 RESISTOR 100kohm 1
78. 10857 4822 051 10339 4822 051 53901 5322 117 10858 5322 117 10858 5322 117 10034 4822 051 51003 4822 051 52202 4822 051 52202 4822 051 10106 5322 117 10857 4822 051 54702 4822 051 10109 5322 116 80448 4822 051 51001 4822 051 10271 x Pos R562 R563 R564 R566 R567 R568 R569 R570 R571 R574 R577 R578 R579 R580 R581 R582 R583 R584 R585 R586 R587 R588 R589 R590 R591 R592 R593 R594 R595 R596 R597 R598 R599 R600 R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 R615 R616 T1 U1 U2 U02 U3 U5 U6 Description Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Thermistor 2 2 kQ 3 1 4 W NTC Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 220 0 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 1 00 KQ 1 1 8 W 100PPM 1206 Resistor 3 30 k2 1 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 6 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 100 kO 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Thermistor 2 2 kQ 3 1 4 W NTC Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 MQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100
79. 11 periods This measurement is started directly when reset is released The measurement start can be controlled in a much more detailed manner GET and arming delays event or time can be used to qualify the measurement start Qualifying the stop can be done in the same advan ced way The basic method is to send a Measurement STOp MSTO signal to the circuits via the uC interface This signal cannot be viewed externally The length of IPA and IPB is not correctly viewed approxi mately 3 to 7 s Clock JUI nnn LULU mn m mun Reset L Input sign JU LU LU LU U LU LU LT L L U L L L L LU MSTO PT IPA IPB yy CT ea 931 YCY Figure 4 15 A number of measurement signals for a frequency measurements of 11 periods XCY X carry is the input signal divided by 8 YCY Y car ry is the clock divided by 8 12 5 MHz These two si gnals will normally look like a burst signal of 12 5 MHz and the input signal divided by 8 The burst length is as long as the gate time An OverFLow Warning message OFLW is send to the OQ0502 circuit This means that the counter chains in OQ0504 will soon overflow and that the start stop logic should stop the measurement when possible Reset The RESET signal is coupled as a ripple through chain By this method the reset signal resets the whole measuring lo gic in a correct order The reset chain starts at the RESET IN pin on OQ0504 ripples through the measuring logic of 000504 and c
80. 122 33496 5322 126 14081 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 Appendix Replacement Parts OG NNN C200 CD 000 ODO AANI NOD 020000 DOG AN NAN OODOODODODO AANI ARM O OG 000000 NAA NDO 00 HM 000 DDD 0320200 JOD 020200 ODD 0000 NNN 000 9 5 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V WE 1206 CAPACITOR 1nF 5 63V NPO 1206 CAPACITOR 100nF 10 63V X7R 120 CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 68uF 20 6 3V SOLID AA CAPACITOR 100nF 10 63V X7R 120 CAPACITOR 100nF 10 63V X7R 1506 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 2 00pF 0 5 2pF 300V CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 18pF 5 63V NPO 1206 CAPACITOR 47pF 5 63V NPO 1206 CAPACITOR 18pF 5 63V NPO 1206 DIODE 0 10A BAT18 35V 1PF SOT23 10A BAT18 35V 1PF SOT23 OT23 DO 35 SOT23 9 S ASA BAS45 125V 10A BAR42 30V 00 000 000 000 0000 UOU OOG UUO 000 VUU DU Mmm Onn mamn m
81. 126 13638 S C29 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C3 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C31 CAPACITOR 33pF 5 50V NPO 0805 2222 861 15339 C32 CAPACITOR 82pF 5 50V NPO 0805 2222 861 15829 C33 CAPACITOR 1nF 20 50V X7R 0 5322 122 34123 S C34 CAPACITOR 100nF 20 25V X7R 89805 5322 126 13638 S C35 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C36 CAPACITOR 6 80 JO PE 20 20 16V 6 0X3 2 MOLD 5322 124 10687 R C37 CAPACITOR 10 25V X7R 0 5322 126 13638 S C39 CAPACITOR 100nF 50 25V X7R 0 5322 126 13638 S C4 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C41 CAPACITOR 33pF 5 50V NPO 0805 2222 861 15339 C42 CAPACITOR 82pF 5 50V NPO 0805 2222 861 15829 C43 CAPACITOR 1nF 20 50V X7R 0805 5322 122 34123 S C44 CAPACITOR 100nF 20 25V XIR 0805 5322 126 13638 S C45 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S C46 CAPACITOR 6 80 HF 20 16V 6 0X3 2 MOLD 5322 124 10687 R C47 CAPACITOR 100nF 20 25V X7R 0805 5322 126 13638 S Pos Description C49 Co C51 C52 C53 C54 C55 C56 C57 C6 C7 C8 C9 D D ai O JJ JUU OOO AAA AA A com DB WN D2 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 33pF 5 50V NPO 0805 CAPACITOR 82pF 5 50V NFO 0805 CAPACITOR 1nF 20 50V X7R_ 0805 CAPACITOR I 20 25V X7R 0805 CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 6 80 UE 20 16V 6 0X3 2 MOLD CAPACITOR 100nF 20 25V X7R 0805 CAPACITOR 6 80 P 20 16V 6 0X3 2 MOLD CAPACITOR 220nF 10 63V X7R
82. 15 03 T 7 BAV99 Soon T R102 U R587 A 2 Iaa 100N 100N 82 DN 2 2K 5 2V REAR R89 5V R165 12 5 15 04 5 1 o c y Y 47 PANEL 6 C427 330 L D23 G17 cis los E n i L DI 6 99 BAVaS C13 110 CH 40303 5 2 99 I GB N Pe I R51 100N 100 TOON G8U 6 3V Pa AA tu S 4 PROBE D23 108 330 R500 TOK 470 P25 COMP B BAV99 BAVS9 D D12 D104 Jon 10K T BAVSU Loss BAT187 Y BAT18 p 52 R72 5 We Y BAVS RAV bech ET OK 15 100N 10K NE532D z 5 2V 50 OHMTTMOHM vy 064 D7 d cag R502 R503 R504 RR R A LA 5 BAV99 BAV99 ur 1K sve D ASO 250 11 00 B HIGH 5 22K 70K 10K c10 DE f 025 HC307 f FN ST tang t m pussy Eye R586 X1 X10 R46 108 BFR92A A 390 rom SC RES ba ER R79 R80 ja B CONY U3 F D 3 A3 4 24 4 7 AD96687 NEDELA S 13 44 w aao s LL Toes 5 2V 2 14 P6 TRIGLEVEL gt 1 110 d RT MLM Risa UBS 19 00 DEAL TEST PULSE LR B2 16 ES 2 1 ae DELAY LINE SI 4 100331 C44 1046 cag C50 Gsi C52 HE p Dia 5V Mid H 403 K n 4 5 X U JE 8 EZ eg 5 T 00N 5V C59 C80 Chi C82 C83 C64 C65 C86 HE 1008 100N 100N 100N 100N 100N 100N 100N 10308 R127 pee 8 3V naag 220 B B HIGH 0 mp3 DIMBA ps pATTIA pps pACDCA pps pIMP B gps pATTIE pps pAcIDca pps p COMMON gps FILTER DAAI 0 Riz5 TL431G R129 AD 13 81 5V 50 OHM 5V X10 5V AC 5V 50 OHM 5V X10 5VSAC 5V SEPARATE 5V NO FILTER 12K ik D R A A gvel MOHM A wx A ovepe B ov MOHM B wei B ow OV COMMON A ov
83. 1502 L16 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R15 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 4822 051 51002 L17 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R16 Resistor 470 0 KQ 0 5 1 8 W RC 03G 5322 117 10858 1 18 Choke 452 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R17 Resistor 470 0 kQ 0 5 1 8 W RC 03G 5322 117 10858 L19 Choke 33 LH TSL0807 330K1R2 5322 157 53568 R18 Potentiometer 20 kQ 10 3323P 1 203 10 5322 101 11074 L20 Choke 10 mH B82722 J2102 N1 1A 5322 157 70143 R19 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 4822 051 51003 L21 Choke 10 pH TSL1110 100M3R2 5322 157 52513 R20 Resistor 390 Q 1 1 8 W 100PPM 1206 4822 051 53901 122 Choke 10 uH TSL1110 100M3R2 5322 157 52513 R21 Resistor 390 Q 1 1 8 W 100PPM 1206 4822 051 53901 123 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R22 Resistor 470 0 kQ 0 5 1 8 W RC 03G 5322 117 10858 L24 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R23 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L25 Choke 0 15 uH 10 MLF3216DR15K 5322 157 71041 R24 Resistor 15 0 kQ 1 1 8 W 100PPM 1206 5322 116 82261 L26 Choke 0 15 uH 10 MLF3216DR15K 5322 157 71041 R25 Resistor 330 Q 1 1 8 W 100PPM 1206 4822 051 53301 L27 Choke 0 15 pH 10 MLF3216DR15K 5322 157 71041 R26 Resistor 330 Q 1 1 8 W 100PPM 1206 4822 051 53301 L28 Choke 0 15 uH 10 MLF3216DR15K 5322 157 71041 R27 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L29 Choke 0 15 pH 10 MLF3216DR15K 5322 157 71041 R28 Resistor 56 0 kQ 1 1 8 W
84. 2 209 81842 5322 209 81807 5322 209 33175 5322 209 33638 5322 209 33604 5322 209 82864 5322 209 33174 5322 209 33171 4822 130 10025 5322 209 33169 5322 209 62422 5322 209 33101 5322 209 33103 5322 209 71553 5322 209 33108 5322 209 33102 5322 209 71553 4822 130 60686 4822 130 60686 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 44743 5322 130 44743 5322 130 44743 4822 130 60511 5322 130 60508 5322 130 60508 5322 130 44593 5322 130 40781 5322 130 40781 4822 130 60686 5322 130 60647 4822 130 63069 5322 130 60647 4822 130 63069 5322 130 40781 5322 130 60647 4822 130 63069 5322 130 60647 4822 130 63069 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 44336 4822 130 60511 x P P Pos Description Part Number gt lt Pos Description Part Number gt lt V45 Transistor BC847B 1A45V SOT23 4822 130 60511 V59 Transistor 0 50 A BC817 25 45V SOT23 4822 130 42804 V46 Transistor BC847B 1A45V SOT23 4822 130 60511 V60 Transistor 0 50 A BC817 25 45V SOT23 4822 130 42804 V47 Transistor BC847B 1A45V SOT23 4822 130 60511 V61 Transistor BC847B 1A45V SOT23 4822 130 60511 V48 Transistor BC847B 1A45V SOT23 4822 130 60511 V62 Transistor BCP51 1 5A 45V SOT223 5322 130 62639 V49 Transistor BC847B 1A45V SOT23 4822 130 60511 V63 Transistor 0 50 A BC817 25 45V SOT23 4822 130 42804 V50 Transistor BC847B 1A45V SOT23 4822 130 60511 V64 Transistor 0 50 A BC807 25 45V SOT23 5322 130 60845 V51 Transistor BC847B iA
85. 2 3 5X6MM 80 at 100 MHz Choke 482 3 5X6MM 80 Q at 100 MHz Choke 482 3 5X6MM 80 Q at 100 MHz Choke 452 3 5X6MM 80 at 100 MHz Part Number 5322 130 34337 4822 130 80497 5322 130 30691 5322 130 32328 5322 255 41313 5322 130 83602 5322 130 34337 5322 130 34337 5322 130 80255 4822 130 60815 5322 130 80212 5322 130 33764 5322 130 80212 5322 130 80212 5322 130 80255 5322 130 33764 5322 130 33764 5322 255 41313 5322 130 32328 5322 130 34337 5322 130 83586 4822 130 33004 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 33764 4822 253 30024 4822 256 30139 5322 256 60311 4822 138 10082 5322 290 60445 5322 290 60445 5322 290 60445 5322 290 60445 5322 263 50101 5322 263 50101 5322 290 60445 5322 321 62336 5322 265 44074 5322 267 60148 5322 280 60557 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 280 20514 5322 157 61918 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 x J J IA IA A A N Pos Description Part Number Pos Description Part Number L13 Choke 1 uH 10 MLF3216D1ROK 5322 157 62555 R12 Resistor 1 80 kQ 1 1 8 W 100PPM 1206 4822051 10182 L14 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R13 Resistor 220 0 Q 1 1 8 W 100PPM 1206 4822 051 52201 L15 Choke 452 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R14 Resistor 1 50 kO 1 1 8 W 100PPM 1206 4822 051 5
86. 2 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 000 000 NAN NNN 020200 NTIN 020200 020000 020200 ODO OOO OGG OG 020000 OG be Pos Description Part Number x C16 C160 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 33pF 5 63V NPO 1308 CAPACITOR 33pF 5 63V NPO 1206 CAPACITOR 1uF 10 50V MMKO 5 PETP CAPACITOR 1uF 1096 50V MMKO 5 PETP CAPACITOR 15 UE 20 6 3V 6 0X3 2 MOLD CAPACITOR 100nF 1096 63V X7R 1206 CADARN OR 100nF 10 63V X7R 1206 CAPACITOR 33pF 5 63V NPO 1206 CAPACITOR 33pF 5 63V NPO 1206 CAPACITOR 2 20nF PME289MA4220MR04 CAPACITOR 2 20nF PME289MA4220MR04 RESISTOR 0 ohm BYGLING RC 01 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100uE 20 35V 2M 8 2x11 APACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 GSV X7R 1206 CAPACITOR 100nF 20 250V CAPACITOR 1uF 10 50V MMKO 5 PETP CAPACITOR 2 20nF PME289MA4220MR04 CAPACITOR 2 20nF PME289MA4220MR04 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 10 0nF 10 63V X7R 1206 CAPACITOR 33 0nF 10 50V X7R 1206 CAPACITOR 33pF 5 63V NPO 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 120
87. 20 ohm 1 125W 100PPM 1206 56 ohm 1 125W 100PPM 1206 56 ohm 1 125W 100PPM 1206 56 ohm 1 125W 100PPM 1206 56 ohm 1 125W 100PPM 1206 00 ohm 1 0 125W 100PPM 1206 hm 1 0 125W 100PPM 1206 hm 1 0 152W 100PPM 1206 hm 196 0 125W 100PPM 1206 hm 1 0 125W 100PPM 1206 Kohm 0 5 0 125W RC 03G RESISTOR RESISTOR 1206 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 270 oh RESISTOR 56 ahm 0 0 O Q 0 1 0 125W 100PPM 1206 1 0 125W 100PPM 1206 1 0 125W 100PPM 1206 1 125W 100PPM 1206 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 00Mohm 1 0 125W 100PPM 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 560 ohm 1 125W 100PPM 1206 RESISTOR 1 50kohm 1 0 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 330 ohm 1 125W 100PPM 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 560 ohm 1 125W 100PPM 1206 RESISTOR 4 70kohm 1 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 4 70kohm 1 125W 100PPM 1206 RESISTOR 270 ohm 1 125W 100PPM 1206 RESISTOR 150 ohm 1
88. 206 POTENTIOMETER 20kohm 10 3323P 1 203 10 RESISTOR 22 0kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 180 0ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 196 0 125W 100PPM 1206 THERMISTOR 16 00hm 20 3 5A 5236 16 RESISTOR 180 0ohm 196 125W 100PPM 1206 RESISTOR 56 0kohm 196 125W 100PPM 08 RESISTOR 56 ohm 1 125W 100PPM 1 RESISTOR 100 ohm 196 0 125W 100PPM 4206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 2 20kohm 1 125W 100PPM 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 220 0chm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 220 0ohm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 220 0ohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 15 0Kohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 0 22 ohm 5 0 125W LRCO1 3 2x1 6 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 00Mohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 33 0kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 1 80kohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 560 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 12
89. 22 051 10569 R609 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R61 RESISTOR 390 ohm 1 125W 100PPM 1206 4822 051 53901 R610 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R611 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R612 RESISTOR 100 ohm 1 0 125W 100PPM 1206 4822 051 51001 R613 RESISTOR 56 ohm 1 125W 100PPM 1206 822 051 10569 R614 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R615 RESISTOR 100 chm 1 0 125W 100PPM 1206 822 051 51001 R616 RESISTOR 56 ohm 1 125W 100PPM 120 4822 051 10569 000 AND NOG OG NONN COCO 02 0000 ORG 0020000 00 000002 000200 020202 NNN 020200 OG 020202 020000 NNN ID NNN NN 020202 NNN NNN MN DIN MOM ND VGA NNN NAA NAM ND pr RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 2 20kohm 196 125W 100PPM 1206 RESISTOR 68 0kohm 1 PM 100 EN 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 POTENTIOMETER 20kohm 1096 3323P 1 203 10 RESISTOR 68 0kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 196 0 1W 100PPM 0805 RESISTOR 100 ohm 1 0 1W 100PPM 0805 RESISTOR 100 ohm 195 0 1W 100PPM 0805 RESISTOR 220 00hm 1 125W 100PPM 1206 RES ISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 1206 RESISTOR 56 0kohm 1 Ad 100PPM 1206 RESIST 150 ohm 196 0 125W 100PPM 1206 RESIS TOR
90. 22 122 34098 5322 130 81921 4822 130 30953 CATHODE Dei MOM w i FETA L d o C U A SHAN SCALE 2 1 INSIDE GREEN FOIL MATTE OUTSIDE WHITE FOIL 7 16 Replacement Parts Front board Pos D203 D204 DL100 E201 P204 R201 R202 R203 R204 R205 U201 202 Description LED 3mm Yellow 590nm 4 8MCD 10 mA LED 3mm Yellow 590nm 4 8MCD 10 mA Backlight LCD display Connector 40 POL TMH 120 01 L DW Resistor 220 kQ 1 1 8 W 100PPM 1206 Resistor 390 2 1 1 8 W 100PPM 1206 Resistor 390 Q 1 1 8 W 100PPM 1206 Resistor 4 7 Q 10 1 4 W RC 01 1206 Resistor 4 7 Q 10 1 4 W RC 01 1206 IC PCF8576T VS056 IC PCF8576T VSO56 fon L NT TT Nil ZAS Z VAIVAA N OOd Le IN SG m ES PE LE RRR Fa LCD MARKING Part Number 4822 130 30953 4822 130 30953 5322 130 82201 5322 130 90889 5322 265 51295 4822 051 52204 4822 051 53901 4822 051 53901 4833 051 10478 4833 051 10478 5322 209 11129 5322 209 11129 Pos 011 Description Cable assy Shield cover Shield Connector R 114426 SMB Connector 16pin FO95 90deg d Row Capacitor 100 pF 5 50V NPO 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor i nF 20 50V X7R 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 47 pF 5 50V NP0 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 4 7 pF 5 50V NPO 0805 Capacitor 1 nF 20 50V X7R 0805 Capacit
91. 22 34123 5322 122 32287 5322 122 34123 5322 122 34123 5322 122 33869 9322 122 34123 5322 122 32447 5322 122 34123 5322 122 34098 5322 122 34098 5322 122 34098 5322 122 34098 5322 122 34098 5322 124 10684 5322 122 34123 5322 122 34098 5322 122 34098 5322 122 34098 5322 122 32447 5322 122 32286 5322 122 32286 5322 122 32658 5322 122 34098 9322 122 33063 5322 122 34098 5322 122 34123 5322 122 34123 5322 130 31544 5322 130 31544 5322 130 31544 5322 130 31544 5322 130 31544 5322 130 34337 5322 130 31544 5322 130 80246 5322 130 31544 5322 130 34337 5322 130 34337 5322 130 34337 5322 209 71557 5322 209 61399 9322 209 71553 5322 157 52986 PM 9621 x P P Description Choke 0 1H 10 MLF3216DR10K Choke 0 1H 10 MLF3216DR10K Choke 0 14 10 MLF3216DR10K Resistor 470 Q 1 1 8W 100PPM 1206 Resistor 470 Q 1 1 8W 100PPM 1206 Resistor 470 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 22 Q 1 1 8W 100PPM 1206 Resistor 270 Q 1 1 8W 100PPM 1206 Resistor 330 Q 1 1 8W 100PPM 1206 Resistor 330 Q 1 1 8W 100PPM 1206 Resistor 8 2 2 10 1 4W RC 01 1206 Resistor 150 Q 1 1 8W 100PPM 1206 Resistor 8 2 Q 10 1 4W RC 01 1206 Resistor 220 Q 1 1 8W 100PPM 1206 Resistor 33 Q 1 1 8W 100PPM 1206 Resistor 10 Q 1 1 8W 100PPM 1206 Resistor
92. 263 5322 116 82263 5322 116 82263 4822 051 10339 4822 051 10339 4822 051 10339 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 4822 051 10339 4822 051 10339 4822 051 10339 4822 051 51001 5322 116 80448 4822 051 10829 4822 051 10829 4822 051 53301 4822 051 10109 4822 051 51003 4822 051 53301 4822 051 10561 4822 051 52202 4822 051 52202 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 53903 4822 051 51003 4822 051 51003 4822 051 10569 4822 051 52201 4822 051 51001 5322 116 80448 x Pos R201 R202 R203 R204 R206 R207 R208 R209 R210 R211 R212 R216 R217 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 R256 R25 R258 R259 R260 R261 R263 R264 Description Resistor 47 Q 196 1 8 W 100PPM 1206 Resistor 47 Q 196 1 8 W 100PPM 1206 Resistor 10 0 kQ 196 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 KQ 1 1 8 W 100PPM 1206 Resistor 47 Q
93. 276 R278 and D35 protect the input U88 amplifies the signal and make nice pulses out of it U37 generates short pulses which is then filtered in the crystal filter B5 to be 10 MHz see Figure 4 19 It is possible to switch off the external reference signal with the signal DISABL EXT REF from the micro controller A low level of this signal makes V61 conductive and that for ces a high ECL level on the output of U98 The selected reference is used as 10 MHz out An ampli fier stage V9 transforms the square wave from U56 to a sine signal This stage has 50 Q driving capabilities e 100 MHz Frequency Multiplier The 10 MHz reference signal is fed to the flip fiops U81 which generates short negative pulses see Figure 4 20 These pulses triggers the resonant circuit L25 C414 tu ned to 100 MHz After the amplifier V20 the signal is again fed to a resonant circuit L29 C346 tuned to 100 MHz A 100 MHz filter B3 removes over and underto nes this procedure is repeated to get a nice sine wave U94 generates a sqare wave signal which is used directly by the external Interpolator counter and Hold off circuits The 100 MHz sqare wave is also converted to ECL levels by resistors R238 R266 and R432 and used by OQ0502 as reference Figure 4 20 100 MHz frequency multiplier Hardware Functional Description 4 15 Hardware ID Prescaler ID Vika L Volt B OQ temp V Ld NTC resistor lo Test Keyb interrupt _ Me
94. 2CAPIP2 7 80C196 A 4 119 13 13 05 3 05 9 Va ya Vi HT 2 V2 ro 2 DIS o PLAY amp va 7 KEY wx2 BOARD i R182 C 100K Ri74 100K R175 D 100K R176 100K R177 L 100K R178 y 100K R179 DJ 100K R180 3 100K R181 100K 5FRONT DISP DRIVER 11 P20 R172 GS L 5V 2 2K 4 5FRONT YEN 4 5FRONT 5V P C1 1D V 4 5FRONT vem Kid i 12 I 8 ng KP 4 5FRONT ACS 4 5FRONT 1 4 5FRONT 13 t2 445FRONT AC110 AC11020 Bi AC11021 lt FRONT 400N 100N 100N 100N 100N 15U 6 3V Logical circuits Unit 1 sheet 2 6 F G H l J K L M N 0 P Q 35340 Bag ONIOFF RESET A pal BESETASICS D 1347 fa HAR D30 bat uta 2 4 la N gt HD 10 RAM ADORZ25 DAD 1 254 R198 BAS45 BAR42 560 37108 100 Get I 229 Tao 8 AD4R228 Ina fat 7 z LA 6 4 100 R220 C313 A C93 t Si 820 wani ml lag 4 las 3 DA3110 Jaz 24 aid 21 H A8 2 R191 a 2 10K JAT 26 ais 1 een Hvsu 22 pr RESIN TL7770 5 TO5564PL 1 H RESETGABO ver D 6 88 U28 12 11 R426 ED B m 6 8l AT Jim SED BAI __ AA Y gt gt gt j j NI II nsn A 00 00 gt 4 69 LT N Po D 6 66 100N DD eps
95. 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R43 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L50 Choke 452 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R44 Potentiometer 20 kQ 10 3323P 1 203 10 5322 101 11074 L51 Choke 452 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R45 Resistor 10 0 k2 1 1 8 W 100PPM 1206 4822 051 51003 L52 Choke 452 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R46 Resistor 390 Q 1 1 8 W 100PPM 1206 4822 051 53901 L53 Choke 452 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R47 Resistor 390 Q 1 1 8 W 100PPM 1206 4822 051 53901 L54 Choke 482 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R48 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L55 Choke 452 3 5X6MM 80 22 at 100 MHz 5322 157 61928 R49 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L56 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R50 Resistor 15 0 k2 1 1 8 W 100PPM 1206 5322 116 82261 L57 Choke 482 3 5X6MM 80 at 100 MHz 5322 157 61928 R51 Resistor 330 Q 1 1 8 W 100PPM 1206 4822 051 53301 L58 Choke 452 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R52 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L59 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R53 Resistor 56 0 kQ 1 1 8 W 100PPM 1206 5322 117 10971 L60 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R54 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 L6 Choke 482 3 5X6MM 80 Q at 100 MHz 5322 157 61928 R55 Resistor 150 O 1 1 8 W 100PPM 1206 482205151501 P7 Connector 3 POL F095 SINGLE ROW 5322 290 60445 R5
96. 33 iara DELS ipa p100MHZGMO DO LDA B HIGH les D VBB O050 a D XT ARM HIGH C324 Ci18 EXT ARMING vev T REAR PANEL xx N 4m 470 033 Z R251 C418 ness pao BAVSS 300 47 5 6P 15K BAV99 R233 R595 R566 0 L 033 ong 270 100 100K Sa N awe 5N 52V vas U84 100304 100304 100304 100331 J K 100MHZ CMOS AC11074 AG11074 d R537 5V RLD HOLD OFF Counter circuits Unit 1 sheet 3 6 AC11074 U43 Ls ds WI 8 L R D AC11074 U42 d 6 an 04 pi AG11074 to 1 UA Du H 4 M EG s p b AG11074 LU L3 5 2 9 lag LG dn P AC11074 POLRI READ gt 12 45 8 7 C116 C124 24 R245 56 56 GATE OPEN RO Fa O REAR PANEL R247 a Y R246 iK v 68 D jo ag ELO 12 44 5 30 jp TRIG IND A DISPLAY amp KEYBOARD 24 p ipot TRIG IND B f Vas SCH N 5FRONT 5FRONT Rase JR302 Raoo R301 sak laz Leak Uso vas war 3 WAWA Jaca R581 R557 R556 3 47K 4K 4TK g uae Reda 5 HLLOOTEMPp par 2 1K NE532D _3CT 0 3CT 15 AC11191 Drawings Diagrams 8 9 Basic board Component layout enn Z use ue2 ii i i R331 R311 U6 i P25 sr E NME e gar kuo wees Bottom side 8 10 Drawings amp Diagrams A B G b E F G H l J K 406110055020 PMEBSYBASICOOARD TRIGCER LEVELDAC
97. 33 0 ohm 1 125W 10 206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 470 ohm 1 125W 100PPM 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 68 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 1206 RESISTOR 22 ohm 1 125W 100PPM 1206 RESISTOR ohm 1 125W 100PPM 1206 RESISTOR 13 Oohm 1 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 1206 RESISTOR 15 00hm 1 125W 100PPM 1206 RESISTOR RESISTOR 100 ohm 1 0 125W 100PPM 1206 100 ohm 1 0 ZA 1DOPEM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 1 0 ohm 1 O 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 NSFORMER PM6680 Ser New PS TRA IC PC74HC574T IC OP AMP CA3140AM CA3140 AM BIMOS SO8 CMOS 74AC08D 4XAND2 SO14 SMD SRAM A RA 6 20K SMD 32K 8 SOJ 44 EMOS MG C573DW 8 LATCH 5020 SMD S S n A gt n 2 CH O N Vi N O A LH O Q2 N A co n O A I MOS MC 4A B 8DW 8 LATCH 8020 SMD OCKET 32 POL 644 018 3 18 3 ER 000 4HC574T 5020 P CA3140AM CA31
98. 4 O P13 oP12 P11O p10 Poo Figure 5 10 Test points and jumpers for testing the microcontroller Check that 16 MHz is present at U6 pin 67 see Figure 5 10 Check that 8 MHz is present at P7 Check that the RESET circuitry U8 works properly by short circuiting the above shown pads At power on some tests are automatically performed Si multaneously a message is sent to the serial port of the u computer The message can be read by a PC connected to the serial port To do this perform as follows Connect testpoints P5 0UT and P16 GND to a COM port on the PC Run a terminal emulator program as KERMIT or Wind ows TERMINAL EMULATOR Switch on the counter Every time the counter is switched on the following message will be displayed on the screen Code start OK Ram regs OK Timer1 OK Prom bank3 OK Prom bank2 OK Prom bank1 OK Prom bank0 OK Disp Driver 1 OK Disp Driver 0 OK Disp Driver Till Ram bank2 2080h xor OK 4000h fill OK Ram bank1 2080h xor OK 2080h fill OK 4000h fill OK Ram bank0 2080h xor OK 2080h fill OK 4000h fill OK Ram bank2 4000h zero OK CO00h zero OK 5 8 Troubleshooting Ram bank1 2080h zero OK 4000h zero OK Ram bank0 2080h zero OK 4000h zero OK Asics 0291h 02A5h OK l PHILIPS PM6681 0 MAIN X1 02 Mar 24 1994 10 30 26 GPIB X1 13 Mar 01 1994 123 Figure 5 11 Timing diagram for u controller Run uC Kernel test Test 3 Set
99. 40 AM BIMOS 508 OS MC74AC573DW 8 LATCH 5020 SMD OS SMD 74AC11 5014 31NP AND OS SMD 74AC11 5014 31NP AND OS SMD 74AC11 5014 31NP A OS 74AC20SC SMD OS 74AC20SC SMD OS Kor 4XAND gt CMOS SMD 74VHC27 OMP AD96687BQ DIL OS SMD 74VH CMOS 74AC02D 4XNOR2 SO1 777 OOO OOO OOO Q00 000000 OO 00000000000 OO O N A O PIO MD SMD SMD IG PC74HC138T O16 IC CMOS 74AC74 D 2xD FF SCH SO 16 UP DOWN IC CMOS 74AC74 D 2xD F IC CMOS SMD 74AC191 F SO COUNTER IC CMOS 74AC74 D 2xD FF SO 14 SMD IC CMOS SMD 74AC191 5016 UP DOWN COUNTER C CMOS MC74AC573DW 8 LATCH 020 SMD C CMOS 74AC02D 4XNOR2 5014 SMD C CMOS 74AC02D 4XNOR2 5014 SMD C CMOS 74AC02D 4XNOR2 5014 SMD C CMOS 74AC02D 4XNOR2 5014 SMD IC REG TL431C LP T092 C CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS CD74AC02M 5014 SMD IC CMOS 74AC74 D 2xD FF 50 14 SMD IC CMOS SMD 74AC191 5016 UP DOWN COUNTER IC CMOS CD74ACO2M 5014 SMD IC PC74HC574T IC SOCKET 44 POL PLCC IC 1 50 A LM317T TO 220 Part Number 5322 116 80448 4822 051 52202 4822 051 56803 4822 051 53901 5322 101 11074 4822 051 56803 4822 051 51003 4822 051 51002 5322 117 12497 5322 117 12497 5322 117 12497 4822 051 52201 4822 051 10689 4822 051 10689 5322 116 80448 5322 116 80448 4822 051 51002 4822 051 10829 5322 117 10971 4822 051 51501 4822 051 10339 822 051 51 4 003 4822 051 51003 4822 051 51003 4822 051 54701 4822 051 53901 4822 051 53901 4822 051 52201 4822 0
100. 45V SOT23 4822 130 60511 V65 Transistor BC847B 1445V SOT23 4822 130 60511 V52 Transistor BC847B 1A45V SOT23 4822 130 60511 V66 Transistor BC857B 1A45V SOT23 5322 130 60508 V53 Transistor BC847B 1A45V SOT23 4822 130 60511 V67 Transistor BFS17 05A 15V SOT23 5322 130 40781 V54 Transistor BC847B 1A45V SOT23 4822 130 60511 V68 Transistor BFS17 05A 15V SOT23 5322 130 40781 V55 Heat sink 13 5 K W TO220 5322 25541314 P V69 Transistor BC847B 1A45V SOT23 4822 130 60511 V55 Clip ELFA 2201 532240591687 P V70 Transistor BC847B 1A45V SOT23 4822 130 60511 V55 Transi pow MOS 2A BUK446 800A SOT186 5322 130 63535 V71 Transistor BC847B 1A45V SOT23 4822 130 60511 V56 Transistor 0 50 A BC807 25 45V SOT23 5322 130 60845 X2 Connector 3 POL F095 single row 5322 290 60445 V57 Transistor 0 50 A BC817 25 45V SOT23 4822 130 42804 X4 Connector 3 POL F095 single row 5322 290 60445 V58 Transistor 0 50 A BC817 25 45V SOT23 4822 130 42804 Replacement Parts Main Board 7 15 Pos Description PC B 2 assy 5 Zebra strip 7 LCD display 10 LCD rim 11 Backlight 14 Window LCD 16 LED spacer 32 Screw RX PT Z 2 28X8 FZB C201 Capacitor 10 nF 20 50V X7R 0805 C202 Capacitor 10 nF 20 50V X7R 0805 D201 LED 3mm HLMP K150 Red 1 mA D202 LED 3mm Yellow 590nm 4 8MCD i OmA VOIT UAH ITEM 63 56 A Front board Part Number 5322 218 70109 5322 267 70294 5322 130 90889 5322 464 90667 5322 130 82201 5322 381 11136 5322 255 41228 4822 502 30081 5322 122 34098 53
101. 4822 051 51001 4822 051 10105 4822 051 51002 4822 051 10105 4822 051 51003 4822 051 51002 5322 116 82264 4822 051 51001 4822 051 51003 4822 051 51003 5322 116 80448 4822 051 52202 4822 051 51003 4822 051 10339 4822 051 51004 4822 051 51004 4822 051 10339 4822 051 51004 4822 051 51004 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 10569 5322 148 20035 4822 209 62796 4822 209 62796 4822 209 60451 5322 209 33098 4822 209 81397 5322 209 33105 x Replacement Parts Main Board 7 13 Pos U6 U7 U8 U9 U10 Uti U12 U13 U14 U15 U16 U16 U17 U17 U18 U19 U20 U21 U22 U23 U24 U25 U26 U27 U28 U29 U30 U31 U32 U33 034 U35 U36 U39 U41 U44 U45 U46 U47 U48 U49 U50 U51 U53 U54 U55 U56 U56 U57 U58 U58 U59 U60 U61 U62 U63 U64 U65 U66 7 14 Replacement Parts Main Board Description IC socket 68 POL 821574 1 F PLCC IC 1 50 A LM317T TO 220 IC TL7770 50W IC 64 KBIT TC5564PL 1 8KX8 IC RAM CMOS TC55328P 35 256kB SMD IC RAM CMOS TC55328P 35 256kB SMD IC RAM CMOS TC55328P 35 256kB SMD IC RAM CMOS TC55328P 35 256kB SMD IC CMOS 74AC573 5020 SMD IC CMOS 74AC573 5020 SMD IC socket 32 POL 644 018 3 IC PROM PM6681 AM27H010 70DC IC socket 32 POL 644 018 3 IC PROM PM6681 AM27H010 70DC IC PC74HC574T S020 IC PC74HC574T S020 IC CMOS 74AC573 5020 SMD IC CMOS 74AC11021 AND4 014 SMD I
102. 51 10689 5322 117 10858 4822 051 10689 5322 116 80448 5322 116 80448 4825 051 s1002 4822 051 108 2355 116 80448 5322 116 80448 4822 051 10829 4822 051 10829 4822 051 10829 4822 051 10159 4822 051 10829 4822 051 10159 4822 051 51001 4822 051 51001 5322 116 80448 5322 117 10967 5322 116 80448 5322 148 20035 4822 209 60451 9322 114 39682 9322 165 95701 5322 209 33102 9322 165 95701 5322 209 90435 5322 209 90435 5322 255 40921 5322 255 40921 4822 209 60451 4822 209 60451 9322 114 39682 5322 209 90435 9322 166 59682 9322 166 59682 9322 166 59682 5322 209 90427 5322 209 90427 5322 209 33102 5322 209 33102 9322 209 33103 9322 166 60682 4031 105 03250 9322 166 60682 5322 209 33101 5322 209 33104 5322 209 33104 5322 209 33104 5322 209 33104 5322 209 73178 5322 5322 9322 165 21701 5322 9322 165 21701 5322 209 90435 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33101 4822 209 81397 5322 209 33101 9322 181 05682 5322 9322 165 21701 9322 181 05682 4822 209 60451 5322 255 41315 4822 209 80591 Appendix Replacement Parts OVO MM 020202 0200 ODD MAN DODD AG 020000 AG 000 NOG OMG 0202002 ODO ODO NNN MM 00 000 O AINA A o O NAM NNN 0 O 0000000 NOG 9 9 Pos Description U58 U59 U6 U60 U61 U62 U63 U64 U65 U66 U67 U69 U69 U7 U70 9 10 Part Number ix Pos Description__________ Part Number zx IC SOCKET 68 POL PLCC 4031 105 71000 IC OP AMP OP177GP
103. 5322 116 80448 4822 051 51001 4822 051 51001 4822 051 10829 4822 051 51001 4822 051 10121 4822 051 10121 4822 051 10106 4822 051 51002 4822 051 51001 4822 051 51001 4822 051 51002 4822 051 10106 4822 051 10109 4822 051 51001 4822 051 10109 5322 117 10968 4822 051 10822 4822 051 52201 4822 051 56801 4822 051 51002 5322 116 82262 4822 051 51001 5322 116 82262 4822 051 51001 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 5322 116 82263 x R140 R141 R142 R143 R144 R145 Ri46 R147 R148 R149 R150 R151 R152 R153 R154 R155 R156 R157 R158 R161 R162 R163 R164 R165 R166 R169 R170 R171 R172 R173 R174 R175 R176 R177 R178 R179 R180 R181 R182 R183 R184 R185 R186 R187 R188 R189 R190 R191 R192 R193 R194 R195 R196 R197 R198 R199 R200 Description Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 6 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 39 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resis
104. 5W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 120 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 2 70kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 O 129W db OOPPM 1206 RESISTOR 390 ohm 1 125W PPM 1206 RESISTOR 560 ohm 1 125W 100PPM 1206 RESISTOR 2 20kohm 1 125W 100PPM 1206 RESISTOR 560 ohm 1 125W 100PPM 1206 RESISTOR 4 70kohm 1 125W 100PPM 1206 RESISTOR 4 70kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 W 100PPM 1206 RESISTOR 1 80kohm 1 125W 100PPM 1206 RESISTOR 4 70kohm 1 125W 100PPM 1206 POTENTIOMETER ikohm 20 3323P 1 102 RESISTOR 10 0kohm 1 O 129W 100PPM 1206 RESISTOR 330 ohm 1 125W 100PPM 1206 POTENTIOMETER 20kohm 1096 5993p 1 203 10 RESISTOR 3 30kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 00kohm 196 0 125W 100PPM 1206 9 8 Appendix Replacement Parts Part Number 4822 051 52201 4822 051 10682 6 5322 117 10857 4822 051 10682 5322 116 82264 5322 116 82264 4822 051 51501 4822 051 51501 4822 051 51003 4822 051 51003 4822 051 51003 5322 101 11074 4822 051 56803 5322 117 10969 4822 051 51003 5322 101 11074 4822 051 56803 4822 051 53302 4822 051 51001 4822 051 53302 4822 051 51001 4822 051 51003 5322 117 10858 4822 051 51003 5322 116 82868 5322 116 82868 4822 051 10569 4822 051 10569 4822 051 56801 822 051 56801 4822 051 56801 4822 051 10008 4822 051 51003 4822 051 51003 5322 101 1
105. 6 CAPACITOR 47pF 5 63V NPO 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 1nF 5 63V NPO 12 CAPACITOR 100nF 10 63V X7R 01206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 1nF 5 63V NPO 1206 CAPACITOR 10 0nF 10 63V X7R 1206 CAPACITOR 1nF 5 63V NPO 1206 CAPACITOR 10 0nF 10 63V X7R 1206 CAPACITOR 2200uF 20 16V RAD 2M 12 5X25 CAPACITOR 68uF 20 6 3V SOLID AL CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR SBUF 20 6 3V SOLID AL CAPACITOR 2200uF 20 16V RAD 2M 12 5X25 CAPACITOR 15 HE 20 6 3V 6 0X3 2 MOLD CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 10 0nF 10 63V X7R 1206 CAPACITOR 2 20 UF 20 6 3V 3 2X1 6 MOLD CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 6 80 uF 2096 16V 6 0X3 2 MOLD CAPACITOR 15 uF 20 6 3V 6 0X3 q CAPACITOR 6 80 HE 20 16V 6 CAPACITOR 6 80 uF 20 16V 6 CAPACITOR 33HF 20 oN SO CAPACITOR 19 45 20 3V 6 0X3 2 MOLD CAPACITOR 100nF 10 SN XTR 1 CAPAGITOR 100nF 10 63V X7R 1206 CAPACITOR 68uF 20 6 3V SOLID AL CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 15 UF 20 6 3V 6 0X3 2 MOLD CAPACITOR 68pF 20 6 3V SOLID A CAPACITOR 15 uF 20 6 3V 8 0X3 2 MOLD CAPACITOR 15 HF 20 6 3V 6 0X3 2 MO CAPACITOR G t 20 6 3V SOLID MOL CAPACITOR 68uF 20 6 3V SOLID AL CAPACITOR 68uF 20 6 3V SOLID AL CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 270uF 20 SMG 400V 25X45 CAPACITOR 100uF 20 35V 2M 8 2x11 CAPACITOR 100uF 20 35V 2M 8 2x11 CAPACITOR 100uF 20 35V 2M 8 2x11 CAPACITOR 68uF 20 6 3V SOL
106. 6 Resistor 33 Q 1 1 8 W 100PPM 1206 4822 051 10339 P18 Flat pin 2 8mm E184 8 LESA SN BAND 5322 290 34064 R57 Resistor 10 0 kO 1 1 8 W 100PPM 1206 4822 051 51003 P19 Flat pin 2 8mm E184 8 LESA SN BAND 5322 290 34064 R58 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 4822 051 51003 P20 Connector 16 POL F095 DOUBLE ROW 5322 265 40262 R59 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 4822 051 51003 P21 Connector 10 POL 22 03 2101 4030 10A 5322 265 64028 R60 Resistor 470 Q 1 1 8 W 100PPM 1206 4829 051 54701 P25 Connector 5 POL 334 2142 2 05 530 5322 265 41369 R61 Resistor 390 Q 1 1 8 W 100PPM 1206 482205153901 P109 Soldering tag 9 6X15 15 MS FS 5322 290 30318 R62 Resistor 390 Q 1 1 8 W 100PPM 1206 4822 051 53901 R4 Resistor 47 0 KO 0 5 1 8 W RC 03G 1206 5322 117 10857 R63 Resistor 220 0 Q 1 1 8 W 100PPM 1206 482205152201 Ro Resistor 330 kCx 1 1 8 W 100PPM 1206 3322 117 10968 R64 Resistor 68 Q 1 1 8 W 100PPM 1206 4822 051 10689 R6 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 R65 Resistor68 Q 1 1 8 W 100PPM 1206 4822 051 10680 R7 Resistor 56 0 kQ 1 1 8 W 100PPM 1208 5322 117 10971 266 resistor 47 O 1 1 8 W 100PPM 1206 5322 116 80448 R8 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 5322 117 10858 R67 Resistor 47 1 1 8 W 100PPM 1206 5392 146 80448 RO Resistor 100 kO 1 1 8 W 100PPM 1206 4822051 51004 ROB Resistor 1 00 KO 1 1 8 W 100PPM 1206 4822 051 51002 R11 Resistor 2 70 kQ 1 1 8 W 100PPM 1208 4822 051 52702 R69 Resistor 82 Q 1 1 8 W 100PPM 1206
107. 60451 4822 209 60451 5322 209 33147 5322 209 33175 5322 209 33175 5322 209 33175 5322 209 33174 5322 209 33174 5322 209 33102 5322 209 33102 5322 209 33103 5322 209 33176 5322 209 33176 5322 209 33101 5322 209 33104 5322 209 33104 5322 209 33104 5322 209 33104 5322 209 73178 5322 209 33177 5322 209 33177 5322 209 33147 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33101 5322 209 33177 5322 209 33176 4822 209 60451 5322 209 62844 5322 255 41315 4822 209 80591 5322 209 33097 5322 255 40677 5322 209 62119 4822 209 62805 5322 209 62119 5322 209 62119 5322 209 62107 5322 209 62107 5322 209 62119 5322 209 62119 x Pos U67 U69 U69 U70 U71 U72 U73 U73 U74 U75 U77 U78 U79 U80 U82 U84 U85 U86 U87 U88 U90 Ugi U92 U93 U94 U95 U97 U96 U99 vi V2 V3 V4 V8 V9 V12 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V25 V26 V27 V28 V29 V31 V32 V33 V40 V41 V42 V43 V44 Description IC NE532D DUAL 50 8 Heat sink 16 K W TO220 IC 12 V UA7812UC 1A TO 220 IC 1 50 A LM317T TO 220 IC REG TL431C LP TO92 IC 75uV LAG OFFSET DIL 8 Heat sink 16 K W TO220 IC 1 50 A LM337T TO 220 IC REG TL431C LP TO92 IC CA3140M 508 IC NE532D DUAL 50 8 IC P8291A TALK LISTEN IC SN75161AN IC SN75160AN IC CMOS 74AC11021 AND4 5014 SMD IC DIG ECL 100304PC PDIP24 IC DIG ECL 100331QC PCC28 IC REF 2 50 V MC1403U DIL 8 IC CMOS 74AC11020 NAND4
108. 60511 4822 130 60511 5322 130 40781 5322 130 40781 5322 130 40781 5322 130 44711 4822 130 60511 4822 130 60911 x PM 9678B Pos Description Part Number w Pos Description Part Number x Screw MRT KOMBI 3X06 STFZ 4822 502 11658 P C2 Capacitor 15 F 20 16V SOLID AL 4822 124 20977 Spring Washer KBA 3 2 ST FZ DIN137 4822 53080173 P KT1 Oscillator 10 MHz TCXO 5322 216 94047 R BU1 Connector 10 pin 22 14 2104 4455 BC 5322 267 50336 R1 Resistor 147 196 1 2 W MRS25 4822 050 21471 C1 Capacitor 65 pF 5 5 65pF 100V 4822 125 50017 TS1 Transistor BF245C 025A 30V TO92 4822 130 41065 Replacement Parts PM 9678B 7 19 This page is intentionally left blank 7 20 Replacement Parts PM 9678B Chapter amp Schematic Diagrams How to Read the Diagrams This chapter contains circuit diagrams and component layout in formation Each diagram contains a list of the ICs used These lists indica tes the connections that are not shown in the diagram such as GND and supply voltages Signals The signals in the counter are named after what they do e g LEAD EDGE is used as control current to the leading edge cir cuits Two different types of arrows are used to mark references for continued connection somewhere else in the diagram A1 This arrow is used if the reference is directed to a point located on the same page IA This arrow is used if the reference is directed to a point located on another page The example means that
109. 62 01083 4822 051 51003 5322 117 10858 4822 051 53301 4822 051 10561 4822 051 52202 4822 051 52202 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 5322 101 11074 4822 051 51004 4822 051 51004 4822 051 51004 1822 051 19889 822 051 1056 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51003 4822 051 10569 4822 051 51003 4822 051 51003 4822 051 51003 NNNNA OM OMG NN 020200 AGO 0202000 NNN DID OG AGO OOO NNN OMG MOM MGM 0302000 BOG DODD ODON OM ANA O pe ANA 000900 000 000 ANG NAN NANANA 00 Pos Description RESISTOR 39 0kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR dw POM EM onm RESISTOR 220 00hm 1 125W 100PPM 1266 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 47 ohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESTOR om 15 128 SE RESISTOR 390 ohm 196 125W 100PPM 1206 RESISTOR 56 ohm 196 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 1 4 8
110. 65 4822 122 32442 5322 125 50049 4822 122 31765 4822 122 33496 4822 122 33496 4822 122 33496 5322 125 50051 4822 122 33496 4822 126 10324 4822 122 32504 4822 863 15228 4822 126 10324 4822 122 32504 4822 122 33496 4822 122 32507 4822 863 15228 4822 122 33496 4822 122 31746 4822 122 31746 5322 126 13129 4822 122 31981 4822 122 31981 4822 122 31981 4822 122 33496 4822 122 33496 4822 121 41676 5322 121 44222 5322 126 13129 5322 124 40852 5322 126 13129 4822 122 31765 5322 126 13128 4822 122 31784 4822 122 31784 4822 122 33496 4822 122 33496 4822 122 33496 5322 126 13131 5322 126 13131 5322 124 80821 4822 122 31746 4822 122 33496 x Replacement Parts Main Board 7 7 Pos C395 C396 C397 C398 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C415 C416 C417 C418 C419 C420 C421 C426 C427 0428 0429 C430 C432 C436 C441 C442 C445 C447 C448 C449 C450 C451 C452 C453 C454 D4 DS D6 D7 D8 D9 D10 D11 D12 D13 D18 D23 D24 D26 D27 D30 D31 D32 D33 D35 7 8 Replacement Parts Main Board Description Capacitor 100 nF 1075 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 12 pF 596 63V NPO 1206 Capacitor 12 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor
111. 723 5322 124 11418 5322 124 11418 5322 124 10685 5322 124 11418 5322 124 10687 5322 124 11418 5322 124 10687 5322 124 10687 5322 124 11084 5322 124 11418 4822 122 33496 5322 124 10455 5322 124 11418 5322 124 11418 5322 124 10455 5322 124 11418 5322 124 11418 5322 124 10455 x Pos C328 C329 C330 C334 C335 C336 C338 C339 C340 C341 C342 C344 C345 C346 C347 C348 C349 C350 C351 C352 C353 C354 C355 C356 C357 C358 C359 C360 C361 C362 C363 C364 C367 C368 C369 C370 C371 C372 C373 C374 C375 C376 C377 C378 C379 C381 C382 C383 C384 C385 C386 C387 C388 C389 C390 C391 C392 C393 C394 Description Capacitor 68 F 20 6 3V SOLID AL Capacitor 68 F 20 6 3V SOLID AL Capacitor 270 F SMG 20 400V 25X45 Capacitor 68 F 2095 6 3V SOLID AL Capacitor 6 80 uF 20 16V 6 0X3 2 MOLD Capacitor 15 pF 20 6 3V 6 0X3 2 MOLD Capacitor 6 80 LF 20 16V 6 0X3 2 MOLD Capacitor 6 80 uF 20 16V 6 0X3 2 MOLD Capacitor 470 F 20 35V 2M 12 5x20 Capacitor 15 uF 20956 3V 6 0X3 2 MOLD Capacitor 15 uF 20956 3V 6 0X3 2 MOLD Capacitor 100 nF 10 63V X7R 1206 Capacitor 22 pF 5 200V NPO 1206 Capacitor 10 pF 1 8 10PF 300V Capacitor 10 pF 1 8 10PF 300V Capacitor 10 pF 1 8 10PF 300V Capacitor 100 pF 5 63V NPO 1206 Capacitor 10 nF 10 63V X7R 1206 Capacitor 10 pF 1 8 10PF 300V Capacitor 100 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 1096 63V X7R 1206 Capacitor 100 nF 1096 63V X7R 1206 Capac
112. 8 295 AA o Leo 2 99 po 20 19 Table 2 14 Sensitivity of PM 9625B Amplitude Pass Fail mVaus 150300 20 x 2 10 a _f JET BT 4000 25 19 elatti Table 2 15 Sensitivity of PM 9625 Verify that the counter counts correctly The last digit will be unstable Performance Check Check on HOLD OFF function 2 7 This page is intentionally left blank 2 8 Performance Check Options PM 6681 Performance Check Report 1 The LSD digit may vary MENU is not disabled by setting DEAFULT press menu again aree nnn nn eE Ker PP AAA Vodeo A KARA ranne LA AAAA LAD AAA KANAN ON EENEG 1 Value depends on the symmetry of the signal 2 Exact value depends on input signal Chapter 3 Disassembly The terms in the following figure are used in all descriptions in this manual Removing the Cover WARNING Do not perform any internal service or adjustment of this instrument unless you are gualifyed to do so WARNING When you remove the cover you will expose live parts and accessible termi nals which can cause death Front Bottom WARNING Although the power switch is in the off position line voltage is present on the printed circuit board Use extreme caution Figure 3 1 Terms used in this manual The PM 6681 is available with a number of options and acces sories The labels on the rear panel of
113. 803 4822 051 53302 4822 051 51001 4822 051 53302 4822 051 51001 4822 051 51003 4822 051 51003 5322 116 82868 5322 116 82868 4822 051 10569 4822 051 10569 4822 051 56801 4822 051 56801 4822 051 56801 4822 051 10008 4822 051 51003 4822 051 51003 x Replacement Parts Main Board 7 11 Pos R331 R332 R334 R335 R336 R337 R339 R340 R341 R342 R344 R345 R346 R347 R348 R349 R350 R352 R353 R354 R355 R356 R357 R358 R359 R360 R361 R365 R366 R367 R368 R369 R370 R371 R372 R373 R374 R375 R377 R378 R379 R380 R381 R382 R383 R384 R385 R386 R387 R388 R402 R403 R404 R405 R406 R407 R408 7 12 Description Potentiometer 20 kQ 10 3323P 1 203 10 Resistor 22 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 180 0 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Thermistor 16 Q 20 3 5A S236 16 Resistor 180 0 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 470 Q 1 1 8 W 100PPM 1206 Resistor 3 30 kQ 1 1 8 W 100PPM 1206 Resistor 15 0 kQ 1 1 8 W 100PPM 1206 Resistor 470 0 kQ 0 5 1 8 W RC 03G 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 5 1 6W PR37 Resistor 15 0 KQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 0 22 Q 5 SN14L2EJ Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 MQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100
114. 822 122 31746 4822 122 32442 4822 124 40723 5322 124 10455 4822 122 33496 5322 124 10455 4822 124 40723 5322 124 11418 5322 124 11418 4822 122 32442 5322 124 10685 322 co ke OOM 10001 AAU 230202 NAN NN DODD 020200 OG RAG 2302002 200202 DODD 020202 020202 OMG ODO 0002000 OOO DDD DDD NAM OG VM MOUM NAM 020000 NN NNN AMG OG cn c W 0 NN NI NI ho NINI Ap pp MO woo NN NN h RR Rh JL de an 5322 12 5322 124 4822 122 4822 122 33 5322 124 10455 5322 124 11418 5322 124 11418 5322 124 10455 5322 124 11418 5322 124 11418 5322 124 10455 5322 124 10455 5322 124 10455 4822 122 33496 5322 124 80334 5322 124 40852 5322 124 40852 5322 124 40852 5322 124 10455 5322 124 10687 5322 124 11418 5322 124 10687 5322 124 10687 4822 122 33496 5322 126 13131 5322 124 11418 5322 124 11418 4822 122 33496 4822 122 32482 2222 809 05215 5322 125 50049 2222 809 05215 4822 122 33496 4822 122 33496 5322 125 50049 2222 861 15101 1 06 141 068 068 108 141 349 49 O DOOR NOO 4822 122 33496 4822 122 33496 4822 122 33496 2222 809 05217 4822 122 33496 Onon U f 000 Pos Description Part Number x CAPACITOR 33pF 5 63V NPO 1206 CAPACITOR 15pF 5 63V NPO 1206 CAPACITOR 2200uF 20 16V RAD 2M og 5X25 CAPACITOR 2 2pF 0 25pF 63V NPO CAPACITOR 33pF 5 63V NPO 120 CAPACITOR 15pF 5 63V NPO 1206 APAC ITOR 100nF 10 63V X7R 1206 CAPAC OR 8 2pF 0 25pF 50V N750 1206SMD CAPACITOR 8 2pE 0 25pF 5
115. 87 C188 C189 C190 0191 0192 0193 C194 C196 C197 C201 C202 C302 C303 C304 C305 C306 C307 C308 C310 C311 C313 C314 C315 C316 C317 C318 C319 C320 C321 C323 C324 C325 C326 C327 Description Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 1095 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 1 uF 10 50V MMKO 5 PETP Capacitor 1 uF 10 50V MMKO 5 PETP Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 100 nF 10 63V X7R 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 2 20 nF PME289MA4220MR04 Capacitor 2 20 nF PME289MA4220MR04 Resistor 0 RC 01 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 20 250V Capacitor 1 uF 10 50V MMKO 5 PETP Capacitor 2 20 nF PME289MA4220MR04 Capacitor 2 20 nF PME289MA4220MR04 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 10 nF 10 63V X7R 1206 Capacitor 33 nF 10 50V X7R 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 47 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 2200 F 20 16V RAD 2M
116. 9690 91 Figure 6 5 Trimmers for the optional oscillator fre quency The adjustment should preferably be made at an ambient temperature of 23 C The oscillator must have been operating continuously for 48 hours before any adjustment is made Connect the 10 MHz reference signal of the PM 668XR to EXT TRIG of the oscilloscope Connect the 10 MHz out of the counter to the A input of the oscilloscope e Adjustment Adjust the FINE trimmer on the oscillator until the wave form moves with a velocity of a maximum of 1 div 10s 0 1 Hz See Figure 6 5 IF the adjustment is too narrow proceed as follows Set the FINE trimmer fully clockwise Remove the two screws holding the oscillators text plate Use a pair of tweezers to remove the small plastic cylin der beneath the text plate Connect an external counter to the 10 MHz OUT socket of the counter to be adjusted Adjust the COURSE trimmer until the display reads 10000003 Hz on the external counter Adjust the FINE trimmer until the display reads 10000000 Hz on the external counter Reinstall the plastic cylinder and the text plate to the os cillator Adjust the FINE trimmer on the oscillator until the waveform moves with a velocity of a maximum of 1 div 10s 0 1 Hz Interpolator NOTE This adjustment has only to be performed if the ti mer counter has lost it s calibration information that is if the counter displays ZC aL
117. A SCL AT S Di 22K PV WZ HO 3 RESTAR YT OJA ET 4SFRONT RESTART 3 OK 5 FRONT 0 10 no A ROK vo UP Z3AZIV J17 R I Rua DIS H nn n ko DUE SFRON PLAY VI 7 RAG KEY 5 FRONT BOARD 2 V2 Yo ako US 2 J17 R DIS 345 FRONT PLA opo HK amp V3 H RAFA a KEY 5FRONT BO va gt pe Ji ral 5 FRONT V5 oo HK 1 Ji VB 80 1 Kr M 5 FRONT 33A Ji DOK dA VE Ran lau 13 4A OP IKAN 5 FRONT 0 Appendix 9 15 This page is intentionally left blank 9 16 Appendix Counter Circuits Unit 1 sheet 3 6 A B D Li M 9 C p O cav Lu COUNTER CIRCUITS BP AS 00504 101 26102 6104 6321 6127291285129 2610 dea ease ma eme Zeus 58 cam deus m 11 bom om Wow 18u 6 3v 100N Moon toon joon Joon Jion toon bom Moon 45 nig sue how md g 100MHZ CMOS jg OPTION 11 j ae 100N CR L t 45 U39U 41 AS v CCI LBS N 9 10 LES N 0349 157 48 5ECL 100N 100N 48 YU 24 100N u P 449 10460 417 100N 100N 100N TN 125V T U37U 88 FT PVCOM LM3TT 10 112412 sg 45 o 1 53 35 128 Catt 10147 10137 10 5 70 VHH 100N 100N 45 la ben sue Res how 10 100N 12 Laz MA PU58 36 47 AS PUSSY 320 126 15 80 yE Pares ha be 419 68U 6 3V 100N BW d 10N L10M P21 L L 9 Yet PP 107 OMZ ADJ 108 9 OSCILLATOR TY PE OPT OS P21 B RUBIDIUM EL B OP T OSC Ll Flas2X1 _ 15 28 CORN OS Rp N 47 FY 7 7 nd
118. A serial I7C bus connects the drivers to the U controller on the main board R201 sets the ciock frequen cy of the drivers to approximately 140 kHz The VLCD pin is connected to GND on the main board A back light is provided with the LCD This is an LED array integrated to one component l uses approximately 0 35 A and dissipates approximately 1 5 W 4 4 Hardware Functional Description Keyboard Main PCA SECH Front panel gt U21 amp U87 Interrupt LOCAL PRESET gt SCL gt SDA Figure 4 22 Keyboard scanning The push buttons are connected in a matrix and the scan ning signals HO to H7 are coming from the main board If a button is pressed and HO to H7 is high one of the output signals VO to V7 will be high VO to V7 are also connected to an interrupt input P0 7 on the u controller U6 via the AND gates U21 and U87 The LOCAL PRESET button is not part of the scanning but connected directly to the AND gates U21 and U87 Three screws fix the front unit to the main board unit A 40 pin flat cable electrical connects the front unit to the main board Main Board Input Amplifier A Input amplifiers A and B are two matched 300 MHz ampli fier circuits Channel A and channel B Channels A and B are identical except the 100 kHz filter in channel A the switching circuitry for the separate common modes the B channel delay line and event delay output The following description refers to channel A bu
119. AV99 SOT23 Diode 0 35 W BZX84 C8V2 SOT23 Diode BYV26E DOD57 Diode 0 35 W BZX84 C18 SOT23 Diode 0 24 BAV23 200V SOT143 Diode 0 35 W BZX84 C18 SOT23 Diode 0 35 W BZX84 C18 SOT23 Diode 0 35 W BZX84 C8V2 SOT23 Diode 0 2A BAV23 200V SOT143 Diode 0 2A BAV23 200V SOT143 Heat sink 16 K W TO220 Diode 7A BYW29 200 TO 220AC Diode 0 10A BAV99 SOT23 Diode 0 10A BAR42 30V SOT23 Diode 0 35W BZX84 B5V6 2 SOT23 Diode 0 104 BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 10A BAV99 SOT23 Diode 0 2A BAV23 200V SOT143 Fuse 1 6A 5X20 T FST034 3119 Fuse holder 011 656 5X20mm Battery holder 20mm BH800 Battery 3V BR2032 190mAH 20x3 2 Connector 3 POL F095 single row Connector 3 POL F095 single row Connector 3 POL F095 SINGLE ROW Connector 3 POL F095 single row Connector 2POL F095 jumper grey Connector 2POL F095 jumper grey Connector 3 POL F095 single row Cable assy PM6681 Connector 2 POL F095 single row Connector 24 POL 57LE 20240 7700D35G Relay 2p vx V23042 A1003 B101 Relay TQ2 5 SV 1A 2pol vx 14X9X5m Relay TQ2 5 SV 1A 2pol vx 14X9X5m Relay TQ2 5 SWIA 2pol vx 14X9X5m Relay TQ2 5 SV 1A 2pol vx 14X9X5m Relay TQ2 5 SVHA 2pol vx 14X9X5m Relay TQ2 5 SVHA 2pol vx 14X9X5m Relay TQ2 5 SVHA 2pol vx 14X9X5m Relay TQ2 5 SWIA 2pol vx 14X9X5m Choke 220 uH 10 NL453232T 221K Choke 452 3 5X6MM 80 2 at 100 MHz Choke 482 3 5X6MM 80 Q at 100 MHz Choke 482 3 5X6MM 80 Q at 100 MHz Choke 452 3 5X6MM 80 2 at 100 MHz Choke 452 3 5X6MM 80 Q at 100 MHz Choke 45
120. Analog output he result on the display can be converted io an analog si gnal A digital pulse width modulated signal PWM from the microprocessor is filtered and integrated U77 to give an analog DC level between 0 and 4 98 V with a resolution of 20 mV see Figure 4 24 T Rear Panel Unit The rear panel consists of an aluminum panel with some mounted connectors see Figure 4 25 The following con nectors are mounted on the rear panel INPUTS External reference input BNC D External arming input BNC E Rear panel inputs factory mounted option Menmen L Sweden INPUTA INPUT B INFUT C ma FUSE 1 6AT SERIAL Up SW A OMA INCLUDED OPTIONS O PM9621 O PMI678B O PM361180 PM9621 PMS678B PM3611 80 O PM9624 O PM8690 O O PM9625 O PM9691 O PROBE TRIG COMP VIEW LEVEL ANALOG GATE REFERENCE 10MHz Figure 4 25 Rear panel Power supply inlet including EMI filter OUTPUTS Internal reference output BNC G Gate open output BNC H Analog output X Probe compensation output Trigger level output A GPIB communication connector S0V 265V Hardware Functional Description 4 19 Optional Units HF Inputs There is a choice of three different optional HF inputs PM 9621 PM 9624 and PM 9625 The inputs are all mounted on the same place on the main board to the right of the input amplifier They are connected to P107 and only one prescaler at a tim
121. C CMOS 74AC11021 AND4 5014 SMD IC CMOS 74AC11021 AND4 5014 SMD IC CMOS 74AC11020 NAND4 014 SMD IC CMOS 74AC11020 NAND4 5014 SMD IC CMOS 74AC08D 4XAND2 5014 SMD IC CMOS 74AC08D 4XAND2 5014 SMD IC CMOS 74AC86D 4XEXOR2 5014 SMD IC CMOS 74AC11027 NOR3 5016 SMD IC CMOS 74AC11027 NOR3 5016 SMD IC CMOS 74AC02D 4XNOR2 S014 SMD IC CMOS 74AC32D 4X0R2 5014 SMD IC CMOS 74AC32D 4X0R2 5014 SMD IC CMOS 74AC32D 4X0R2 5014 SMD IC CMOS 74AC32D 4X0R2 5014 SMD IC PC74HC138T SO16 IC CMOS 74AC11191 BIN C SO20 SMD IC CMOS 744011191 BIN C 020 SMD IC CMOS 74AC573 020 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC02D 4XNOR2 S014 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC02D 4XNOR2 5014 SMD IC CMOS 74AC11191 BIN C 5020 SMD IC CMOS 744011027 NOR3 8016 SMD IC PC74HC574T 5020 IC LSI CMOS PM6680 SER IC socket 44 POL PLCC IC 1 50 A LM317T TO 220 IC LSI BIPOL PM6681 IC socket 68 POL 821574 1 F PLCC IC 75uV LAG OFFSET DIL 8 IC PC74HC4353T 5020 IC 75uV LAG OFFSET DIL 8 IC 75uV L G OFFSET DIL 8 IC DAG 12BIT AD7545AKN DIL20 IC DAG 12BIT AD7545AKN DIL20 IC 75uV LAG OFFSET DIL 8 IC 75uV L G OFFSET DIL 8 Part Number 5322 255 40677 4822 209 80591 5322 209 30397 5322 209 62104 5322 209 33099 5322 209 33099 5322 209 33099 5322 209 33099 5322 209 33147 5322 209 33147 5322 255 40921 5322 209 52494 5322 255 40921 5322 209 52494 4822 209
122. C cables Insulated screwdriver ll Table 6 1 Required Test Equipment R For adjustment of Oven Oscillators only PM 5781required for Interpolator calibration adjustment Preparation WARNING Live parts and accessible terminals which can be dangerous to life are always exposed inside the unit when it is connec ted to the line power Use extreme caution when handling testing or adjusting the counter Before beginning the calibration adjustments power up the instrument and leave it on for at least 60 minutes to let it re ach normal operating temperature 6 2 Introduction Power Supply CAUTION If you adjust the 5V trimmer you have to adjust the complete instrument Setup Connect the counter to the line power Switch on the counter Press PRESET then press ENTER Power Module Figure 6 1 Test points and trimmer for the Power Supply Adjustment Connect the DMM to test points L10 and GND6 see Figure 6 1 Adjust the 5V trim potentiometer R446 5V adjust in the power supply using an insulated screwdriver until the DMM reads 5 000 0 001 V Check that the voltage at the test points X15 5 and GND6 is 5 00 0 05 V Check that the unregulated voltage from the power supp ly at test points X11 15 and GND6 is about 18 V Check that the unregulated voltage from the power supp ly at test points X12 9 and GND6 is about 8 V Crystal Oscillators 16 MHz O
123. CITOR 100nF 1096 63V X7R CAPACITOR 100nF 1096 63V X7R CAPACITOR 100nF 1096 63V X7R CAPACITOR 100nF 10 63V X7R 4822 126 10324 4822 122 32504 4822 124 40723 4822 863 15228 4822 126 10324 4822 122 32504 4822 122 33496 2020 552 95905 2020 552 95905 2020 552 95871 2020 552 95905 4822 122 33496 4822 122 31746 4822 122 33496 4822 122 31746 4822 122 31965 4822 122 31981 4822 122 31981 4822 122 31981 4822 122 33496 4822 122 33496 4822 121 41676 2222 336 20334 4822 122 31965 2222 809 05217 5322 124 40852 4822 122 31965 4822 122 31765 4822 122 32482 4822 122 31784 4822 122 31784 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 5322 126 13131 5322 126 13131 5322 124 80821 4822 122 31746 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 2222 809 05217 4822 122 33496 4822 122 32139 4822 122 32139 4822 122 33496 4822 122 31765 4822 122 33406 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 32506 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 2222 809 05217 2222 809 05217 4822 122 33496 4822 122 32139 4822 122 32139 4822 122 33496 4822 126 10324 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 4822 122 33496 5322 124 10455 4822 122 33496 4822 122 33496 4822
124. DAD 800hm at 100MHz Part Number zr 5322 157 61928 5322 157 61928 2412 541 00458 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 53568 5322 157 70143 2422 536 00061 2422 536 00061 5322 157 61928 5322 157 61928 5322 157 71041 5322 157 71041 5322 157 71041 5322 157 52986 5322 157 71041 5322 157 61928 5322 157 61928 2422 535 94048 2422 535 94048 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61928 5322 157 61919 5322 157 61928 5322 157 61928 DADDAN G OO n coocooo 0 O O 00 0 60 G O wn 0 G 0 NA O G O O CG NW 0 OO O O 60 0 60 O POS CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz FLAT PIN 2 8mm E184 8 LESA SN BAND FLAT PIN 2 8mm E184 8 LESA SN BAND CONNECTOR 16 POL TMH 108 01 L DW CONNECTOR 10 POL 22 03 2101 4030 10A FLAT PIN 2 8mm E184 8 LESA SN BAND CONNECTOR 10 POL SINGLE ROW ARE FLAT PIN 2 8mm E184 8 LESA SN BAND CONNECTOR 3 POL F095 SINGLE ROW RESISTOR 100kohm 1 0 125W 100PPM 1206 A 224224 9 m D an aj OO pu RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 196 0 125W 100PPM 1206 RESISTOR 82 oh
125. Disconnect the fan cable from J18 When reinstalling the fan be sure that the air flow arrow on the fan points to the rear of the counter and that the black wire is oriented toward the power module Figure 3 4 The fan is fastened with four screws and nuts PM 9621 PM 9624 or PM 9625 HF Input Disconnect the power cable Remove the cover from the counter Disconnect the cable from the mini coax connector A on the HF input Press the clips B apart and lift the HF input pca straight up and out When installing the HF input make sure that the connec tor pins fit exactly in the holes in the connector housing C Figure 3 5 Removing the HF input PM 9678B TCXO Disconnect the power cable Remove the cover of the counter Remove the screw A holding the TCXO to the main pca from beneath Lift the TCXO straight up Make sure that the jumpers J12 and J15 are set in the correct position When installing the TCXO make sure that the connector pins fit exactly in the holes in the connector housing Figure 3 6 Lift the TCXO straight up after removing the fastening screw Fan 3 3 PM 9690 or PM 9691 Oven Oscillator Disconnect the power cable Remove the cover of the counter Remove the screw A holding the oscillator to the main pca from beneath Press the clip B gently to the front of the counter and lift the oscillator straight up Make sure that the j
126. ESET Enter the data code 85 hex 55 on the DATA ENTRY keypad Press ENTER Enter the address code 21845 hex 5555 on the DATA ENTRY keypad Press ENTER Examine the DATA bus lines Press LOCAL PRESET lf you find any fault continue with traditional troubleshooting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Logical Circuits CAUTION Do not enter an address code be tween E000 and FFFF because this changes the status of the RAM which has battery backup This can cause irregular operation of the counter when in normal use 5 10 Troubleshooting Data code 85 Address code 43690 Address Data Ll A an n Lr L UULU L TIF UU rt RE JULI L AD12 UI DI IL JO U HL zx JLJL JL TLIO FILI 1 oh hat EID EJ aii JUL IL HET UU d LE Figure 5 13 Example of AD bus line diagram Data code hex Address code hex AAAA 55 N lt gt D a S gt o gt t a a GS D aM Data to RAM U11 and U13 r 1 Run the Control signal test Test 4 Internal Control Signals and Disp lay Set the oscilloscope to 0 2 V div and 50 us div Functional Level 5a Check the output signals of U18 see Figure 5 14 Use test pin P5 to trigger the oscilloscope NOTE U18 is located at the bottom side of the PCA U18 19 U18 18 U18 17 U18 16 U18 15 U18 14 U18 13 U18 12 Figure 5 15 Timing diagram for Control signals
127. G LEVEL A B OUT at the rear Set the Trigger Level SET A B on the front to the follo wing values and verify the voltmeter s readout SET A B Readout Pass Fail 500V 5V 028V 500V 5vao28v 00v ovsoov Table 2 8 Trigger level outputs check Probe Comp View Press the PRESET key to set the timer counter in default setting Probe Compensation ETT ETTE ZEZEEBHREN L lll IL JJI LI Lj ll TN i Ei erg ll ag HOH Figure 2 3 Adjustment of the counters probe Select TIME A B non AUTO X1 attenuation and DC coupling for both channels Set the LF synthesizer to 2 kHz square wave and 8 Vpp amplitude Connect synthesizer to Input A via a BNC cable Use an oscilloscope to check the signal at Probe Comp View at the rear The square wave will have the same step response and 4 Vpp amplitude Select X10 attenuation Check that the square wave is 2 kHz and 0 4 Vpp Repeat this test for channel B 2 6 Performance Check Measuring Functions Measuring Functions Preparation for Check of Measuring Function Press the PRESET key to set the fimer counter in the default setting Connecta 10 MHz sine wave signal with 2 0 Vpp ampli tude to Input A Select the following settings for the timer counter 50 input impedance for A and B Non AUTO COMA Check that the timer counter performs the correct meas urement b
128. HOKE 0 15uH 10 MLF3216DR15K CHOKE 0 15uH 10 MLF3216DR15K CHOKE 0 15uH 10 MLF3216DR15K CHOKE 0 10 uH 10 MLF3216DR10K CHOKE 0 15uH 10 MLF3216DR15K CHOKE 452 3 5X6MM BANDAD PADIN an at 100MHz CHOKE 452 3 5X6MM BANDAD 800hm at 100MHz CHOKE 4 70uH 5 LQHIN4R7J CHOKE 4 70uH 5 LQH1N4R7J CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MH CHOKE 452 3 5X6MM BANDAD 800hm at 100MH CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz RI 452 3 5X6MM BANDAD 80ohm at 100 CHOKE 452 3 5X6MM BANDAD 80chm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 452 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 800ohm at 100MHz CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz CHOKE 482 3 5X6MM BANDAD 800hm at 100MHz CHOKE 31 ohm CB50 321611T 1206 CHOKE 482 3 5X6MM BANDAD 80ohm at 100MHz CHOKE 482 3 5X6MM BAN
129. ID AL CAPACITOR 6 80 pF 20 16V 6 0X3 2 MOLD CAPACITOR 15 uF 20 6 3V 6 0X3 2 MOLD CAPACITOR 6 80 uF 20 16V 6 0X3 2 MOLD CAPACITOR 6 80 UE 20 16V 6 0X3 2 MOLD CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 470uF 20 35V 2M 12 5x20 CAPACITOR 15 HE 20 6 3V 6 0X3 2 MOLD CAPACITOR 15 UF 20 6 3V 6 YKS 2 MOLD CAPACITOR 100nF 10 63V X B d2 CAPACITOR 22pF 5 63V MPO CAPACITOR 3 5pF 1 2 3 5pF 300V 2M 6x8x9 CAPACITOR e F 1 8 10PF 300V CAPACIT 1 2 3 5pF 300V 2M 6x8x9 CAPACITOR p 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 10 0pF 1 8 10PF 300V CAPACITOR 100pF 5 50V NPO 0805 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 ACITOR 100nF 10 63V X7R 1206 CAPACITOR 18 0pF 2 0 18PF 300V CAPACITOR 100nF 10 63V X7R 1206 4822 122 33496 4822 122 33496 4822 126 10324 4822 126 10324 5322 121 42515 5322 121 42515 5322 124 11418 4822 122 33496 4822 122 33496 4822 126 10324 4822 126 10324 5322 121 43756 5322 121 43756 4822 051 10008 4822 122 33496 4822 122 33496 4822 122 33496 5322 124 40852 4822 122 33496 4822 122 33496 2222 336 20104 5322 121 42515 5322 121 43756 5322 121 43756 4822 122 33496 4822 122 33496 4822 122 32442 4822 122 31981 4822 126 10324 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31772 4822 122 33496 4822 122 31746 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 4822 122 32442 4
130. M 1206 Resistor 47 Q 196 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Resistor 270 2 1 1 8 W 100PPM 1206 Resistor 150 1 1 8 W 100PPM 1206 Resistor 1 50 kQ 1 1 8 W 100PPM 1206 Resistor 470 Q 1 1 8 W 100PPM 1206 Resistor 470 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 196 1 8 W 100PPM 1206 Part Number 5322 116 80448 5322 116 B0448 4822 051 51003 4822 051 51004 4822 051 51003 4822 051 51003 5322 116 80448 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10008 4822 051 51002 5322 116 82264 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 10271 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 51002 4822 051 51001 4822 051 10105 4822 051 10561 4822 051 52702 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51002 4822 051 10689 4822 051 10689 5322 116 82261 5322 116 82261 4822 051 10561 4822 051 54702 4822 051 10121 5322 116 80448 4822 051 54702 4822 051 10271 4822 051 51501 4822 051 51502 4822 051 54701 4822 051 54701 5322 116 80448 4822 051 51002 4822 051 51003 E Pos R265 R266 R269 R270 R271 R273 R274 R276 R277 R278 R279 R280 R282 R283 R284 R285 R286 R287 R288 R289 R290 R293 R294 R295 R296 R297 R298 R299 R30
131. M9691 05 osc PM 6685R HF signal to 2 1 GHz for generator PM9621 5 GHz Wiltron 6717B 20 CET PM9624 amp 25 Pulse Generator to 125 t0125MHz PM5786B PM5786B PM5781 Oscilloscope with 350 MHz PM3295 probes Power Supply min 40 Voc PM281 1 113 PE1537 PE1542 BNC cables 5 to 7 cables Table 2 1 Recommended Test Eguipment This test equipment in needed if an option is installed 2 2 Performance Check General Information Preparations Power up your instruments at least 20 minu tes before checking to let them reach normal operating temperature Failure to do so may result in certain test steps not meeting equip ment specifications Front Panel Controls Power On Test At power on the timer counter performs an automatic self test of the following Microprocessor RAM ROM Measuring circuits It also displays the GPIB address If there are any test failures an error message is shown Internal Self Tests The built in test programs from the power on test can also be activated from the front panel as follows Enter the Auxiliary Menu by pressing AUX MENU Select the test submenu by pressing SELECT up or down Enter the test menu by pressing the ENTER key Selections for internal self tests are 1 TEST RO ROM TEST RA RAM TEST ASIC Measuring Logic TEST DISP Display Test TEST ALL Test 1 to 4 in sequence OTB N um ER E EE
132. N BAV99 7 PERERA ROBE ras 100N P COMP 7 1 ADI3 R102 BAV99 zu 82 N R587 Las x 82V 7023 17 16 Zeng REAR 5 BAVSS Joon fro BAV Sa s PR O8E PANEL y D23 Zepp 330 BAV99 Dika BAYS x10 064 BAT18 BAT18 lp 82 BAV99 BAV 9 lt zD6 4 AD O RIA BAV99 BAV 9 5 Ras 390 TOS Sal A BA 470 YV06 DUM 4 R604 R109 R43 z og 470K 3 2 H 648 H 1959 ES df 1008 DON 100N 100N SEH Ms rz tz R580 495 10 1125 10 702 5 Droe 10 33K 10 rQ25 CG CE3 C 64 C65 CEB 100 1008 toon vol 400N DHB D AF F B DASS DESHMEN 1 D R 0 1250 1250 1250 250 1250 p 5V 50 OHM p V X10 p 5V AC 5V SEPARATE A BAD FILTER 0V 1 MOHM 0V X1 OV DC DV COMMON DV FILTER E G H N J K L M N P a Appendix 9 13 xipueddy rte GEE r Y fas fra 1 ZN OOO CG a Eg ur EE c X x 2 c g a GE m GE E R Fg N RIG FZ E s LE pez 2152 ens paz presppazs e en R SCH Ge sa s RS TS eur ET F C326 cm o s ER N Rezaya Eja e EE u Rze Em M a amp R202 RZE F gem A FE DS SEE Ia N anar cala ssn 1 sz Bi am nnnnna UUGUU zs E 8 C133 weg E EE 0807 S ERE o CH JA L 9 8 f i i i 5 R355 O6b oi as vey Jave Fred SEP gt aree DB EH grey eeu g Ej J CH
133. NGLE ROW RELAY 2p vx V23042 A1003 B101 1 GILA A2303 RELAY TQ2 5 SV 1A 2pol vx 1 RELAY TQ2 5 SV 1A 2pol vx 14X9XSm RELAY TQ2 5 SV 1A 2pol vx 14X9X5m RELAY TQ2 5 SVAA 2pol vx 14X9X5m RELAY TQ2 5 SV 1A 2pol vx 14X9X5m RELAY TQ2 5 SV 1A 2pol vx 14X9X5m RELAY TQ2 5 SVA spol vx 14X9X5m RELAY TQ2 5 SVMA 2pol vx 14X9X5m CHOKE 220 uH 10 NL4532327 921K CHOKE 482 3 5X6MM BANDAD 80chm at 100MHz Appendix Replacement Parts Part Number 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 4822 122 33496 5322 124 11418 5322 124 10455 4822 122 33496 4822 122 33496 4822 122 33496 5322 124 80335 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 2222 863 15189 4822 122 31772 2222 863 15189 5322 130 32076 5322 130 32076 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 83586 5322 130 34337 5322 130 34337 5322 130 32256 5322 130 83586 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 34337 4822 130 80497 5322 130 30691 5322 130 32328 5322 130 83602 5322 255 41313 5322 130 34337 5322 130 34337 5322 130 80255 4822 130 60815 5322 130 80212 5322 130 34337 5322 130 33764 5322 130 80212 5322 130 80212 5322 130 80255 5322 130 33764 5322 130 33764 5322 130 32328 5322 255 41313 5322 130 34337 5322 130 83586 5322 130 34337 4822 130 33004 5322 130 34337 5322 130 34337
134. NTER ANAL YZER 50ps 300MHz ns i o i SE FFE FUNCTION j MEASUREMENT I DATA ENTRY i UE IE HOLD STARTARM i SINGLE RESTART STOPARM X EE B RC ES 3 i L E Dm EI E M E 21 m y y SE Eet 2 LEE INPUT A E INPUT BO i PRESET REF FILTER SOMA TIL ASB KR SOND COMA x 3 ON x C 007 27GHz 12Vms 50r L EG E Ka 350Vp 1MO A MAX 12Vrms agam ST SAVE RECALL NOTE Switches the counter off Figure 5 17 Codes for each key Test 5 5 12 Troubleshooting Measuring Logic Functional Level 7 The timing diagram in Figure 5 18 shows the signals ge nerated by the stimuli program If you find any fault continue with traditional troubleshoo e ASIC Stimuli ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Counter Circuits The following tests should be done with the standard PROM installed in the counter Switch on the counter Connect an arbitrary signal to the EXT ARM input J5 at the rear panel Trace the signal from J5 to U58 pin 27 Connect a 10 MHz signal to the REFERENCE IN input J6 at the rear panel Trace the signal from J6 to U56 pin 38 Select EXT REF Trace the signal from U56 pin 35 to the 10 MHz OUT J7 at the rear panel Trace the signal from U58 pin 41 to GATE OPEN output J4 at the rear panel Trace the signal from U58 pin 37 and 38 to J17 pin 30 Run the ASIC tests Test 7 and 8 an
135. OR PC B J7 CONTACT PIN MINICOAX FOR PC B J7 BUSHING MINICOAX FOR PC B J8 CONTACT PIN MINIGOAX FOR PC B J8 BUSHING MINICOAX FOR PC B 11 CHOKE 470uH 10 bCl453232 471K FILTER EMI BLM21A102SPT Z 1Kohm 0 24 R 0 60hm CHOKE 4 70uH 5 LOH1NARTJ FILTER EMI BLM21A102SPT Z iKohm 0 2A R 0 60hm L2 FILTER EMI BLM21A102SPT Z 1Kohm 0 2A R 0 60hm L3 CHOKE 47uH 10 BCL322522 470K L4 FILTER EMI BLM21A102SPT Z iKohm 0 24 R 0 60hm L5 CHOKE 10 10 BCL322522 100K L6 BDS BLM21A102SPT Z 1Kohm 0 26 R 0 6 L7 CHO pah A TOuH 5 LQHIN4R7J L8 FILTER EMI BLM21A102SPT Z 1Kohm 0 26 R 0 60hm L9 CHOKE 4 70uH 5 LQH1N4R7J Q1 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q10 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q11 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q12 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q2 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q3 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q4 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q5 TRANSI NPN SMD BFG16A SOT223 1 5GHz iW Q6 TRANSI NPN SMD BFG16A SOT223 1 5GHz iW Q7 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q8 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W Q9 TRANSI NPN SMD BFG16A SOT223 1 5GHz 1W R1 RESISTOR 100 ohm 1 0 125W 100PPM 1206 R10 RESISTOR 100 ohm 1 0 125W 100PPM 1206 R101 RESISTOR 100 ohm 1 0 125W 100PPM 1206 R103 RESISTOR 3 30kohm Li 125W 100PPM 1206 R104 RESISTOR 47 ohm 1 0 1W 100PPM 0805 RESISTOR 5 60kohm 196 125W 100PPM 1206 RESISTOR 1 50kohm 176 0 125W 100PPM 1206 RESISTOR 47 ohm 1 0 1W
136. PPM 1206 Resistor 1 00 MQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 820 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 k2 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Transformer PM6680 Ser New PS IG CA3140M 508 IG CA3140M 508 IC PC74HC574T 5020 IC KOMP AD96687BQ DUAL DIL16 IG REG TL431C LP TO92 IC MIKROP N80C196KC16 SMD Part Number 4822 051 51003 4822 051 51003 5322 116 30458 4822 051 51004 4822 051 51004 5322 116 80448 4822 051 51001 4822 051 51003 4822 051 51003 4822 051 51004 4822 051 52201 4822 051 52201 4822 051 51002 4822 051 53302 4822 051 54702 4822 051 10569 4822 051 51002 4822 051 51004 4822 051 10339 4822 051 10339 5322 116 30458
137. PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 33 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 1 80 kQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 560 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 1 00 kQ 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 56 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 390 Q 1 1 8 W 100PPM 1206 Resistor 560 Q 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 560 Q 1 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Potentiometer 1k 2 20 3323P 1 102 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 330 Q 1 1 8 W 100PPM 1206 Potentiometer 20 kQ 10 3323P 1 203 10 Resistor 3 30 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 k2 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 1 00 kO 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 330 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Replacement Parts Main Board Part Number 5322 101 11074 4822 051 52203 4822 051 51003 4822 051 10181 4822 051 51002 5322 116 30457 4822 051 10181
138. R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 5 6pF 0 5pF 63V NPO 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 KEN XTR 1206 CAPACITOR 100nF 1096 63V X7R 1206 GABAGITOR 100nF 10 aV XTR 1206 CAPACITOR 18 0pF 2 0 18PF 300V CAPACITO OR 18 0pF 2 0 18PF 300V CAPACITOR 100nF 10 SM XB 1206 CAPACITOR 12pF 5 63V NPO 1206 CAPACITOR 12pF 5 63V NPO 1206 GARARILOR 100 100nF E 10 S R 2806 CAPACITOR R 100nF 1 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 1nF 5 63V NPO 120 CAPACITOR 100nF 10 63V R 1206 CAPACITOR 68uF 20 6 3V SOLID AL CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 22nF 10 200V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 10 63V X7R CAPACITOR 100nF 10 63V X7R 1206 CAPACITOR 100nF 1096 63V X7R CAPA
139. R 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 EE 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR RESISTOR RESISTOR 100 ohm 1 0 125W 100PPM 1206 47 ohm 1 125W 100PPM 1206 82 ohm 1 125W 100PPM 1206 RESISTOR 82 ohm 1 125W 100PPM 1206 RESISTOR 330 ohm 1 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 125W 100PPM 1206 POTENTIOMETER 100kohm 20 3362P 1 104 POTENTIOMETER 100kohm 20 3362P 1 104 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 330 ohm 1 RESISTOR 560 ohm 1 RESISTOR 2 20kohm 1 125W 100PPM 1206 RESISTOR 2 20kohm 1 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 198W 100PPM 1208 ONM o U POTENTIOMETER 20kohm 10 3323P 1 203 10 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 ohm 1 12 OOPPM 1206 RESISTOR 56 ohm 1 125W 100PPM 1206 56 ohm 1 125W 100PPM 1206 56 ohm 1
140. R168 LIN B and C38 1X B until the signal is ab solutely flat e Setup PM 6681 Function VOLT A MAX MIN Input A B 50 Q DC Manual trigger level Measuring time DO ns Attenuation MX r 5 pF passive probe Time 5 Susdiv Pulse Amplitude 4 8 V Generator Pulse Period Rise Fall time Pulse shape Symmetrical positive pulse Table 6 6 10X Attenuator setup Press AUX MENU Select Auto Lo and press ENTER Type 1000 on the numeric keypad and press ENTER Connect CLOCK OUT from the pulse generator to TRIGG IN on the osilloscope Connect the Pulse generator to the A input via a T piece Connect the oscilloscope to the other end of the T piece and check that the base and top line of the pulse is absolutely flat Sampling Oscilloscope e Fine adjustment At the first hand the X1 attenuation should be best adjusted NOTE It is of most imporance that the screewdriver does not contain any kind of magnetic material 1X Attenuator channel A NOTE Four digits on the display Connect the probe to test point X2 For trimmers and test points see Figure 6 6 Adjust C40 1X A until the tilt of the top line is 0 3 V See Figure 6 7 0 3V Figure 6 6 The tilt of the top line is 0 3 V Remove the probe Read the counters display Adjust C40 1X A until the displayed value has increased 5 to 10 mV 10X Attenuator channel A NOTE Three digits on the display S
141. R531 R535 R536 R537 R538 R544 R545 R546 R547 R548 R549 R550 R551 R352 R553 R555 R556 R557 R558 R559 R560 R561 Description Resistor 8 20 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 KO 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 k amp 1 1 8 W 100PPM 1206 Resistor 10 0 kO 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 KQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 10 0 Q 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 33 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W
142. REFERENCE IN at the rear panel of the counter Setting for the fimer counter after Preset Function FREQ C EXT REF DOO A a ODOADZHOONO Figure 2 4 Connect the output of the signal generator to the HF input of the counter Generate a sine wave in accordance with the correspon ding table below doo 15 3 180 40 as C Table 2 11 Sensitivity of PM 9621 Verify that the counter counts correcily The last digit will be unstable e PM 9624 PM 9625B or PM 9625 Required Test Equipment Suggested instrument HF signal generator Wiltron 6717B 20 Table 2 12 Test equipment for 2 7 4 2 and 4 5 GHz HF in puts Connect the output of the signal generator to the HF in put of the counter Connect the 10 MHz REFERENCE OUT of the generator to the REFERENCE IN at the rear panel of the counter Setting for the fimer counter after Preset Function FREQ C EXT REF Ka STT aa y cami Figure 2 5 Connect the output of the signal generator to the HF input of the counter Generate a sine wave in accordance with the correspon ding tables below Frequency Amplitude Pass Fail S a 300300 20 21 2990 o zl mo 1 20 21 20 21 Table 2 13 Sensitivity of PIM 9624 Frequency Amplitude Pass Fail Mhz mVpys d m 15030 20 21 220 10 27 8800 1
143. RR AE KI EIE E ENTER V MEMORY AUX FREQA FREQC PERA CAB RATIO v P OTA A TIMEA B PHASE AR ARM ARM TOT A B MAN TOTA I LITE TOTAJLB DUTYFA RISEFALLA VOLTA MAXMIN STAT STO REMOTE EXTREF FILTER 10M0 CH ASB T 15040 COMA CHECK HOLD amp SRO LOBAT 10X DGAG BURST AUTO PAF DAG O OFF Figure 2 1 Text on the display Use SELECTISET to select TEST ALL then press EN TER If any fault is detected an error message appears on the display and the program halts if no faults are detected the program returns to measu ring mode Keyboard Test This test verifies that the timer counter responds when you press any key To check the function behind the keys see the tests further on in this chapter Press the keys as described in the left column and look on the display for the text as described in the second column Some keys change more text on the display than descri bed here The display text mentioned here is the text most ly 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 Preset e vo Fail uu O FILTER FILTER wo sa LN UNG KAA ACIDO ree xo wx sera 1 13 van ENTERO JI ENTER maas 559 p MN NN SIN voy Y L 8omw so o SET B 0 8 AL 0 98 V Enter ENTER O F acne a mg lax 1 coma coma HOLD OFFON H
144. T dc8 IFC b ATN CLOCK A S o RD B pen WRL B pi _ RESETGPIB LLL ET foat eg Da2 14 jp CSBUS Juas 15 153 gt Jor 16 15 les Das i7 5 Das 18 Le DAQ DA7 goar 18 y AA AUAT 8291A D 1111111110 5MB R574 100K R405 R408 R489 100 100 10K Usi 53 C350 7 es L28 5 Vell ml 0 16UH B R490 2 C B4 L25 pop val 3 tegn I Z U 3 C343 Zi LDS EXT OR INT OSC iD a 0 15UH 22P WA 100P GU Sam gt c1 BFS17 2 2 100K OR AC11074 K maha abang O PRA p R403 Rao lena Soa 1 breit Gie R406 R407 Zar 310387 E d E 8 10P i ik 47 155p N 1810P 7 Leto 3 Si 1 8 10P 3L 10K 330 7 1810P 4122p 5 2M l4 524 5 2M C387 C398 fra I E C D E F G H I J K L i a O ANALOG OUT 11 BUS SHIELD mm ot SHIELD Jig UT 10 4 gt 1 5BUS 1 3 E ERR a 7 5o EOI d y 9 SRA gm T 2 17 REN N pp NN m 9 SBUS 4 gt P joe IFC 1 WH TE 4 8 e NDAC ni 5 To NRFD JH i 6 Bor DAV B HG H 2 log DIO4 318 3 2 e DIO2 7 J19 5 3 DIOS 6 Ng 7 Ac DIO4 B J19 3 Jig DIOS 75160 14 Ha DIOS 15 6 219 pto7 16 Ng DIOS 181920212223 244 GND Jig lt 4 6 100MHZ ECL A O m Y U i3A2 S 100MHZ CMOS nm Drawings Diagrams 8 15 Display amp Keyboard board Component layout Display and keyboard board U201 PCF8576 7 8 9 11 U202 PCF8576 7 8 9 10 11 SK38 SK36 SK35 ska 5K39 SK33 Ska4 5K40 skeq SK50 SK32 SK
145. TOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 4 7 ohm 1096 0 25W RC 01 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 100kohm 1 0 125W 100PPM 1206 RESISTOR 10 0 ohm 1 0 EM 100PPM 1206 RESISTOR 390 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 2 70hm 5 0 25W RC 01 1206 RESISTOR 2 70hm 5 0 25W RC 01 1206 RESISTOR 2 7ohm 5 0 25W RC 01 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 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 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 VARISTOR 95V 95VRMS4 1J RESISTOR 4 70kohm 196 125W 100PPM 1206 RESISTOR 10 0kohm 196 0 125W 100PPM 1206 RESISTOR 22 0kohm 1 125W 100PPM 1206 RESISTOR 8 20kohm 1 125W 100PPM 1206 RESISTOR 150 ohm 1 0 1W 100PPM 0805 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 1206 RESISTOR 2 20kohm 19h 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 2 20kohm 1 125W 100PPM 1206 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 RESISTOR 47 ohm
146. Te 100N Tw Dm T Ton 152 gt 4039141 Li 0409 0410 gt 45ECL 100N 100N C449 _ C450 T T R521 Tn Tos t U37UB8 116 10 Chi 0412 10 leo DAPR VHH Tw fe laa laila 1 R C420 G421 108 DEBE H VREG I I T Tw 507 oc T P2t g oi 12VREG P gt 1148 16 82 16 88 EA Got DBS DA D DISABL EXT R R530 L U3 10K R282 U3ruaa PL 220 D35 URS 2 4 U37U88 0134 R269 7 37 sE 6 8 paves T LAE lt LAS a Ga ES q EA ENG R rl li S nd lim dk E i 1K IK R284 NE WW 1K R278 R276 1K 1K 5 REFERENCE en IN J 1 11 03 D B 1201 12 08 245 mi F G H i gt 5V 4 t gt 00504 138 _ C323 C143 gt USB TT 15U 6 3V 700N ell C120 0122 SYN 15U 6 3V TOUN 100N Lu I gt VCCI SE C3i9 U57 gt U58 24 op U d I 2 EE 100N Em 12N I gt VCOM LM317T 56 e gt 58 35 C125 03254 10147 0137 418 ps 15U 6 3V Dm Ton 100N uz gt 1158 35 47 L57 gt U50 57 10320 C126 C419 eee 100N Bo w822 3 A201 00K Cl T3 mw S10MHZ L 13 1M MWANGU A BC847B 5y Tes 10 HZ ADJ Je ST CHA Joa a i LAMB NEC E B2 C109 5 UE e 1 E 10MHZ R240 560 R528 R547 R az Llsso gag 9 U4B 1K Revi oa l 000504 pif RD CS81 RD B WRL B 12 05 2 07 2 06 12 05 12 07 12 01 DA op GO C D ON DA n a DO mas DANODIY C1 5 2 P20
147. Type 10 on the numeric keypad and press ENTER Select 1X attenuation NOTE If it is not possible to select 1X attenuation R308 has fo be adjusted Adjust R308 FULL SCALE A until the counter displays the same value as the DMM 1 mV Common Select COMMON Press SWAP Adjust R311 FULL SCALE COMMON B until the coun ter displays the same value as the DMM 1 mV e Channel B Move the the DC source and the DMM to the B input Deselect COMMON and SWAP Adjust R331 FULL SCALE B until the counter displays the same value as the DMM 1 mV 6 8 Analog output Analog output e Setup PM 6681 Input A 50 Q AC Manual trigger levels Attenuation X1 LF synthesizer __Ampltude tVpp 1000 01 Hz square wave Table 6 9 GPIB interface setup The output amplitude mentioned is the set amplitude it is only valid for an open output of the synthesizer e Adjustment Connect the DMM to the BNC connector ANALOG OUT put at rhe rear of the PM 6681 Activate the analog outpui Select AUX MENU Press SELECT SET unti the display reads ANALOG OUt Press ENTER Press SELECT SET to select ON Press ENTER Type 0 001 ENTER via the keyboard Connect the LF synthesizer to the A input of the counter The counter should read 1000 0xxxxx Hz Adjust the trimmer ZERO R384 see Figure 6 9 until the output voltage is O V 1 mV TE S Y G n 509 Ez Zero adjust F
148. U63 to U67 NOTE U3 and U67 are located at the bottom side of the PCA see Figure 5 20 and Figure 5 21 Trace the signal from U65 and U66 pin 6 to TRIGGER LEVEL A and B OUT P111 pin 1 and 2 at the rear pa nel Connect TRIGGER LEVEL A and B OUT to the oscillos cope and check the result by using the ADD TRACE function If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Trigger Level Circuits Shown from bottom side of the PCA C20 p T Ba rm me 3 Input amplifier I I I I I I t i I I i I i I I I I I I I I o o o 9 O O 8 O O K7 K3 O O O O O O O 0 0 O I l l l l I I l I I l l l I I l I I I I I I I l l I I I I I I I l I I I I l i I 1 H H i 1 H i i 1 H i Figure 5 22 Typical voltages Input Amplifier Troubleshooting 5 15 Input Amplifier Functional Level 9 e A and B Input Check DC levels Switch on the counter Press LOCAL PRESET and ENTER Select Time A B Deselect AUTO and set the trigger level to 1 V on both inputs Select ATTENUATION A and B to x1 Select DC on both inputs
149. W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 KQ 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 1 00 KO 1 1 8 W 100PPM 1206 Varistor 95V 95VRMS4 1J Resistor 4 70 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 22 0 kQ 1 1 8 W 100PPM 1206 Part Number 4822 051 51004 4822 051 56801 4822 051 56801 5322 117 10858 4822 051 51003 5322 116 80448 5322 116 82262 4822 051 10829 4822 051 51002 4822 051 10829 4822 051 10829 4822 051 10271 4822 051 51003 4822 051 51003 4822 051 52202 4822 051 51002 4822 051 10182 4822 051 53902 5322 117 10857 4822 051 52204 4822 101 10792 4822 051 53302 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51003 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51004 4822 051 51003 4833 051 10478 4822 051 51003 4822 051 51004 4822 051 51004 4822 051 10109 4822 051 51002 4822 051 10278 4822 051 10278 4822 051 10278 4822 051 51002 4822 051 10109 4822 051 51001 4822 051 51001 4822 051 51002 4822 051 51001 4822 051 51001 4822 051 51002 5322 116 21222 4822 051 54702 4822 051 51003 4822 051 52203 x Pos R486 R488 R489 R490 R491 R492 R493 R494 R495 R496 R497 R498 R499 R500 R501 R502 R503 R504 R508 R514 R515 R516 R517 R518 R519 R520 R521 R522 R523 R524 R525 R527 R528 R529 R530
150. al built in power supply is needed It is located on the same board as the distri bution amplifiers for the six extra reference outputs included in this instrument Performance Check The general rules in Chapter 2 apply but observe the additional in structions below NOTE To fully test the accuracy of the PM6681R access to an extremely high stability reference signal is needed for example a Cesium Atomic Reference or a transmit ted signal from a nationally or internationally traceable source Additionally the instrument has to be stabilized for a period of one month The PM6681R has an UNLOCKED STANDBY LED When the LED is lit the Rubidium time base is still in its warm up phase and is not yet stabilized m Test procedure Connect the counter to the line power Check that the UNLOCKED STANDBY LED is lit Turn on the Timer Counter Check that the UNLOCKED STANDBY LED is switched off within 5 minutes after connection to line power Connect a 10 MHz reference signal to input A of the counter Select FREOUENCY A measurement Select 1 s measuring time Check that the displayed freguency is 10 00000000 MHz 1 LSD lt 6 minutes after connection to line power NOTE The rubidium timebase unit must be sent to a Fluke service center for repair Follow the exchange proce dure Calibration and Adjustment NOTE Before adjusting the oscillator the timer counter must have been continuously conne
151. apacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 12 pF 2 100V NPO 2M Capacitor 15 pF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Part Number 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31825 4822 122 31825 4822 122 32507 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31839 4822 122 31839 5322 126 13128 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 5322 125 50049 4822 122 31823 4822 122 31823 4822 122 31746 4822 122 33496 4822 122 33496 5322 124 11418 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31971 4822 122 33496 4822 122 33496 5322 126 13129 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31056 4822 122 32504 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 x Pos C154 C156 0157 C160 0165 C166 C167 C168 C169 C170 C171 C172 C173 C174 C175 C176 C177 C178 C180 C181 C182 C183 C184 C186 C1
152. as start po Meas ready Event delay Intrpol ready 16 MHz Power interrupt gt 7 circuit 8 kb RAM battery backed up basic board g Vu I 3 Relay lt gt latch nc basic board 7 256 kb ROM gt basic board Bank switching Trigger level circuits I Figure 4 21 Block diagram PM 6681 logical circuits Logical Circuits e Microcomputer Circuits including I O The microcomputer in PM 6681 is an Intel 16 bit CHMOS ucontroller 80C196KC16 U6 It is a fast micro controller in tended for controller applications i e it has many 1 O ports and other facilities to control and react on the external world lt contains 232 RAM bytes see Figure 4 21 The micro controller can operate in both 8 and 16 bits mode externally Internally the micro controller uses 16 bits The address and data bus ADO to AD15 is shared 4 16 Hardware Functional Description V O n 800196 GATE indication Stop Measurement Prescaler TST GO Prescaler ON OFF EXT ARM Diable EXT REF Fan control Stand by gt Display 2C bus CS502 CS504 Counter Circuits YT D Keyboard circuits mm Keyboard V lt scanning circuits time multiplexed between addresses and data Therefore the address must be stored in an address latch U14 and U15 by using the signa ALE pin 62 If the surrounding circuits are slow compared to the micro controller wait states must b
153. az ardous conditions Therefore ensure that the grounding re guirements are strictly met Power extension cables must always have a protective ground conductor Indicates that the operator should consult the manual NNARNING Any interruption of the protecti N ve ground conductor inside or outside the instrument or disconnection of the protec tive ground terminal is likely to make the in strument dangerous Do not intentionally disrupt the protective grounding Disposal of Hazardous Materials WARNING Disposal of lithium batteries regui res special attention Do not expose the batteries to heat or put them under extensi ve pressure These measures may cause the batteries to explode A lithium battery is used to power the non volatile RAM in this instrument Our world suffers from pollution so don t throw batteries into your wastebasket Return used batte ries to your supplier or to the Philips or Fluke organization in your country Line Voltage The Timer Counter can be powered by any voltage be tween 90 and 265 Vac without any range switching This makes it suitable for all nominal line voltages between 100 and 240 V e Replacing Components in Primary Circuits Components that are important for the safety of this instru ment may only be replaced by components obtained from your local Philips or Fluke organization After exchange of the primary circuits perform the safety inspection and tests as des
154. ber of mounted connectors Most of the connectors are soldered directly to the main board The rear panel screws onto the two aluminum profiles NOTE Simplified extractions from the Schematic diagrams are used in this chapter For complete information see Chapter 8 Schematic Diagrams Probe comp A Gr LLL A and B N Optional osc CSC unt 10 MHz out C E H A B C HE input E Counter Tig ind A LED circuits Probe comp A Le A B FS Probe comp B M EM N Trig lev A out Trig DAC s computer J N Trig lev B out 4 Local Preset Local preset Reset Gate LED Reset circuit Power supply Display Analog outp AG 90 265 V GPIB Keyboard Figure 4 1 Block diagram PM 6681 Block Diagram Description 4 3 Hardware Functional Description Front Unit LCD Drivers gt Backpl 0 Backpl 1 LCD 158 segments 2 1 Multiplex Figure 4 2 Front panel LCD drivers The front unit is made of a molded aluminum front The keypad is made of silicon rubber with screened carbon pads on a PC board that covers the total front An LCD and four LED s are used as indicators To show both the measurement result and the state indicators of the instru ment setting a LCD is used The LED s shows standby ga ting and triggering channel A and B It has 160 segments that are multiplexed with a ratio of 2 1 Two cascade coupled LCD drivers U201 and U202 are used
155. by connecting the two sol der points labeled TEST J11 during startup see Figure 5 6 RH is SS R Er SCH e SS dE E Hot EE RA Figure 5 6 The service functions are activated by con necting the two solder points labeled TEST J11 during startup Switch on the counter The ROM test RAM test and uC Kernel test runs automat ically After the display test the test program starts from the beginning again Use LOCAL PRESET to step through the different tests NOTE The address test and display test are described under Level 4 and Level 5 respectively but they cannot be run before you have checked Level 6 Text Function _ Level Exit RAM test test buttn Keyboardtest 6 LOCAL PRESET ASIC s test 1 ASIC s test 2 LOCAL PRESET test AC DAC test 8 LOCAL PRESET_ Table 5 4 Test programs Troubleshooting Tree Power ON Power up test OK lt Display blank Level 5a OK Level 6 OK var Level 5b OK 209 4 Level 4a OK WA 0 Level 8 OK Level 5a OK Level 9 OK Level 6 OK Q i Level 10 OK Q 2 The instrument Level 4b OK seems to be OK Look for bad cables or other external faults Level 5b OK ja Y Check the connections to the Repair ihe front panel and the instrument and start components on the all over again front panel Figure 5 5 Troubleshooting tree The levels mentioned in the troubleshooting t
156. connec tor 10 MHz OUT J7 Check that 100 MHz is present at U58 pin 19 If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Oscillator Circuits e Optional Oscillator PM 9678B This test can be carried out only if the counter is eguipped with an optional oscillator PM 9678B Be sure that jumper J12 are in the OPT position see Figure 5 9 Check that 10 MHz is present at U56 pins 34 35 36 and pin 37 Check that 10 MHz is present at the rear panel connec tor 10 MHz OUT J7 Check that 100 MHz is present at U58 pin 19 If you find any fault continue with traditional troubleshoo ting technigues and replace defective circuits See also Chapter 4 Circuit Descriptions Optional Oscillator PM 9678B e Optional Oscillator PM 9690 and PM 9691 This test can be carried out only if the counter is equipped with an optional oscillator PM 9690 or PM 9691 Be sure that jumper J12 are in the OPT position see Figure 5 9 Check that 10 MHz is present at U56 pins 34 35 36 and pin 37 Check that 10 MHz is present at the rear panel connec tor 10 MHz OUT J7 Check that 100 MHz is present at U58 pin 19 These oscillators cannot be repaired in a local workshop They must be sent to the factory for repair Troubleshooting 5 7 Microcontroller Functional Level 3 RESET P8 O P150 P1
157. cope The timer counter should display the correct freguency Pass Fail e ee TIT A B 1 57 20 m Table 2 3 Sensitivity for A 8 B inputs at various frequencies Connect the signal to input B Select 50 Q input impedance and SWAP A B on the counter Repeat the above measurements for input B Check VMAX VMIN Check DAC for trigger level settings Set your timer counter in default setting by pressing PRESET Select DC coupling 1 MQ input impedance and VOLT A MAX MIN but do not connect any input signal The counter should now indicate Vmax 0 0 004V and Vmin O 0 004V Connect a 4 00 Vpc level to channel A using an exter nal low pass filter on the input The readings should be Vmax 4 000 0 044V Vmin 4 000 0 044V Change the DC level to 40V The counter should indicate Vmax 40 0 0 84V Vmin 40 0 0 84V Repeat the measurement with inverted polarity Press MATH and select K X L M to change to Vpp measurements Press ENTER Connect a sinusoidal signal to channel A with an ampli tude 4 00 Vpp and a freguency of 100 kHz The indication should be 4 00 0 244V Change the amplitude to 18 Vpp The display should read 18 0 1 84V Select SWAP A B and connect the signal to channel B Repeat the measurements for B as described above 2 4 Performance Check Short Form Specification Test Trigger Ind
158. cribed in Chapter 5 Repair e Fuses This instrument is protected by an ordinary 1 6 A slow blow fuse mounted inside the instrument NEVER replace this fuse without first examining the Power Supply Unit Chapter 2 Performance Check General Information WARNING Before turning on the instrument ensure that it has been installed in accord ance with the Installation Instructions outlined in Chapter 1 of the Operators Ma nual This performance procedure is intended to Check the instruments specification Be used for incoming inspection to determine the accept ability of newly purchased instruments and recently reca librated instruments Check the necessity of re calibration 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 cover of the instrument to perform this procedure If the test is started less than 20 minutes after turning on the instrument results may be out of specification due to insufficient warm up time Required Test Equipment instrument Specifications m Sine up to 2 MHz Power spitter PM9584 02 Tpee PM9067 Y9107 Reference 10MHz 1x107 for Philips counter oscillator 01 to 04 oscillator with calibrated 5MHz 1 10 for P
159. cted to the ac power line for at least 24 hours Required test equipment Type Uncertainty Model 10 MHz reference Cesium GPS Timer Counter Pm668l GPIB controller PC GPIB TimeView m Setup Connect the 10 MHz reference to the REFERENCE IN con nector on the rear panel of the timer counter and make sure that External Reference is selected on the front panel Connect one of the 10 MHz outputs on the rear panel of the PM6681R the Device Under Test DUT to Input A of the timer counter m Calibration measurement Set the measurement time of the timer counter to 10 s Select MATH K X L and set a negative offset of 10 MHz L 10E6 Select STAT statistics N 100 and MEAN Press RESTART After approx 17 minutes the mean value over 100 readings is displayed NOTE If a GPS receiver is used as a reference change num ber of samples N in the STAT menu to 8640 instead of 100 to enable a frequency mean value over 24 h in stead of 17 min GPS receivers have an excellent long term stability 24 h but can be quite unstable over shorter periods m Adjustment criteria If the display reading does not exceed 0 5 mHz 0 5x1 0 Hz no ad Justment is required m Adjustment procedure Switch off statistics STAT OFF in the timer counter Remove the seal sticker from the front panel of the DUT be low Ref Adj to the left of the PRESET button Adjust th
160. d 5 V is senced by U92 and adjusted by R446 The output of U92 is connected to the VF input pin 3 of U91 via the opto coupler U90 The VREF pin pin 14 outputs a reference voltage of 5 V DC e Secondary Circuits A voltage over the capacitor C373 is generated by the dio des D56A and D56B This voltage is used to generate a power failure interrupt NMI to the u controller when the line power disappears see Figure 4 13 From the module there are three DC voltages outputs One of those is regulated 5 V and the others are unregula ted These voltages will vary with input line voltage the cur rent at 5 V and at the unregulated voltages The output marked 15 will be 14 8 V to 21 V and the output marked 9 will be 12 5 V to 7 5 V The outputs are filtered HF filtered by C176 C177 and C178 and LF filtered by L19 L21 L22 C179 C329 and C333 These three DC voltages are used to make the following five supply voltages in the counter 5 V From the switch transformer T1 via D43 and regulated by V49 and U72 5 2 V 9 V is regulated by V17 U73 and U74 12 VREG 15 V is regulated to 12 V by U69 12 VREG is used for the optional oven oscillator and the STAND BY indicator 12 V 12REG V is swithed on and off by 5 V via V18 and V48 7 V U70 and U71 regulates 12 V to be 7 V The voltages for special purposes are 9 V Used unregulated At stand by the regulated supply voltages
161. d 94 at me front panel and to the display and key If you find any fault replace the defective circuits See also Chapter 4 Circuit Descriptions Counter Circuits Figure 5 19 Pinning diagram for U56 and U58 NOTE Test 6 runs automatically without stimuli signals Set the oscilloscope to 2 V div and 50 us div Check all signals on U56 and U58 Use P5 to trigger the oscilloscope see Figure 5 19 U58 39 GATO U58 41 XCY E U58 42 as Se E SNE REN porte SE D SE USR A3 dum IPB U58 45 IPA U58 46 IPCA U58 52 GET U58 54 OFLW U58 59 RESET U58 60 Figure 5 18 Timing diagram for ASIC stimuli test program Troubleshooting 5 13 Trigger Level DAC s Functional Level 8 U63 U64 vee Figure 5 20 Trigger level DACs U63 and U64 Run the DAC test Test 9 Use test pin PS to trigger the oscilloscope 5 14 Troubleshooting U64 20 amp U66 6 U63 20 amp U65 6 U60 18 8 U64 19 U60 5 8 19 amp U63 19 CS U63 amp U64 16 WR U63 amp U64 17 Figure 5 21 Timing diagram for Trigger level DAC s A sawtooth signal of approximately 12 5 Hz is generated on both the A and B trigger levels The sawtooth spans over the complete trigger level range and the B value equals the A value multiplied by 1 This means that both signals can be added by using the oscilloscopes ADD TRA CE function with the result of approximately zero Check all signals on
162. dance converter 4 6 Hardware Functional Description D9 to clamp negative voltage The clamp voltage is appro ximately 2 7 V at low freguency signals At high freguency the clamp voltage rises to approximately 3 0 V e Impedance Converter Stage The analog signal from the input stage is fed to an ampli fier stage where split band technique is used to get a good frequency response over a wide range see Figure 4 6 This means that the high frequency path of the signal is fed via a high impedance AC coupled FET transistor stage In parallel via a DC coupled feedback operational amplifier stage the low frequency path is fed The low frequency path handles frequencies up to approximately 5 kHz Through the FET V1 gate the high frequency signal is fed The high impedance at the gate is converted to a low impe dance at the source Common for both high frequency and low frequency path the source is connects to the HF transi stor V25 To make the FET work well in its active region within the whole dynamic range the FET drain is supplied with 12 V via resistor R94 Two resistors R16 and R17 divides the low frequency si gnal before it is coupled to the input pin 2 of the operatio nal amplifier U1 Resistors R14 and R15 at U1 pin 6 cen ter the output swing and capacitor C3 stabilizes the opera tional amplifier stage The low frequency path goes via the operational amplifier the base and collector of the transistor V25 This
163. ddresses the different instrument must be set to Press ENTER when you are ready to begin the calibra tion Now you shall enter the different GPIB addresses for the instruments involved Type the serial number of the counter under test and press ENTER Now you will be asked if you want to calibrate the counter The calibration will take between 20 and 60 minutes to complete If you answer no n on this guestion you will be asked if you want to verify the calibration of the interpola tors The verification will only take a few minutes The program will attempt calibration using a number of dif ferent input signals and will check the result choosing for the final calibration the best result achieved After the calibration is completed the best calibration para meter will be stored in the counters battery backuped RAM A printout of the calibration result will also be sent to LPT1 of the PC The printout will look as shown below NOTE Even though the specification says 50ps the system does not accept more han 40ps This limit is set to en sure that the spec should be fulfilled over the whole temperature range DEDEDE DEDEDE IE DEDEDE 979990900007007 2 2 IE IE IE 29 2 0 IE IE IE IE IE IE 2 0 9 09 9 HE DE IE IE IE IE IE E 3e HKH PM6681 TEST DATA TEST PROGRAM VERSION 1 0 HHIH HHIH IE HHIH IE H IE 0 29 IE IE IE H IE IE IE IE IE IE IE IE IE IE DE IE 329 H IE 29 2903 IE
164. de 0 10A BAV99 SOT23 Part Number 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 32139 4822 122 32139 4822 122 33496 4822 122 31765 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 32506 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 5322 125 50051 5322 125 50051 4822 122 32139 4822 122 32139 4822 122 33496 4822 126 10324 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 32076 5322 130 32076 5322 130 32076 5322 130 32076 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 34337 5322 130 83586 5322 130 34337 5322 130 34337 5322 130 32256 5322 130 83586 5322 130 34337 5322 130 34337 5322 130 34337 x Pos D38 D40 D41 D42 D43 D43 D44 D45 D47 D48 D49 D50 D52 D53 D54 D55 D56 D57 D57 D58 D59 D60 D61 D62 D64 D66 F1 F G1 G1 GND5 GND6 GND7 J12 J12 J15 J15 Ji7 J18 J19 K1 K2 K3 K4 K5 K6 K7 K8 K9 L1 L3 4 L5 L7 L8 L9 L10 Lit L12 Description Diode 0 10A BAV99 SOT23 Bridge rectif 44 KBU4K 800V Diode 0 25A BAW56 70V SOT23 Diode 7A BYW29 200 TO 220AC Heat sink 16 K W TO220 Diode 7 5A MBR760 60V TO220 Diode 0 10A BAV99 SOT23 Diode 0 10A B
165. dication of the state of the measuring logic Main gate open is indi cated by a high level and main gate closed is indicated by a low level V122 makes it possible to make the high level 1 4 V in 500 Divider The signal from input A is divided by two during freguency A measurements by the divider U85 The reason for this is that the 000502 can not handle frequencies above 225 MHz 4 14 Hardware Functional Description REF OUT OSC 100 MHz Frequency multiplier To be able to measure frequency bursts also on input C the si gnal from the prescaler is divided by two by the other half of U85 before it enter the 0Q0502 Inputs The signals A A channel B B channel C prescaler si gnal and E rear panel external arming input go to an in put multiplexer in 0Q0502 In 0Q0502 the A and B inputs also have slope selections positive edge and negative edge R257 and C117 terminates the C signal External Arming The rear panel input EXTERNAL ARMING is a DC coupled TTL level input R258 to R261 with D32 and D33 protects the input V8 and V42 are a Schmitt trigger with approxima tely 1 4 V threshold level The external arming signal is connected to E input on 000502 Burst The signal HOS from 000502 are also used when measu ring at bursts The External Arming input is switched off by the signal HSO 4 from the u processor via V66 and V65 The HOS signal is then fed via V68 and V67 back to the 000502 input E A
166. e can be mounted In BU7 there are 3 ID pins Different prescalers have different coding of these pins PM 9624 and PM 9625 are factory repair only due to the need of instrumentation for high freguencies e Prescaler 1 3 GHz PM 9621 Figure 4 26 PM 9621 Block diagram The freguency range for the prescaler is 70 MHz to 1 3 GHz To be able to be handled by the measuring logic in the counter the freguency is divided by 256 The input is AC coupled and the input impedance is 502 nominal Five main blocks makes the prescaler Limiter amplifier divider ECL output and level detector see Figure 4 26 Limiter Figure 4 27 Limiter circuits The 6 dB attenuator R1 to R11 keeps the VSWR low for all input levels even the PIN diodes have low impedance see Figure 4 27 When the peak to peak level of the in put signal is greater than the sum of the voltage drops of the Schottky diodes GR3 and GR4 the charging of capaci tor C4 starts Capacitor C4 filters the voltage after the Schottky diodes The PIN diodes GR11 start to conduct when the voltage is lower than approximately 0 65 V 4 20 Hardware Functional Description More current through the diodes means lower impedance This means that the HF voltage over GR11 is constant R12 discharges C4 then the input level decreases L1 pre vents capacitor C4 from short circuiting the HF signal Amplifier R13 R15 From Limiter R14 detector Figure 4 28 Ampli
167. e issued The ready pin pin 43 goes low to get wait states When the micro controller communicates with the battery RAM the GPIB chip the ASIC s and the trigger level circuits wait states are auto matically inserted The PROM s U16 and U17 used is a 27H010 i e two 128K byte memories The address mapping is done so we can only address 32K bytes directly Bank switching is used to be able to use all 128K bytes The signal from U6 pin 21 and 22 controls that one quarter of the memory is used for the moment At reset the first quarter is selected U6 pin 21 and 22 goes high To be able to make a CRC check of the contents of the PROM the micro controller must be able to read the con tenis of the PROM as data The address and data bus ADO to AD15 can be separated into two parts By removing resistors R183 to R190 R209 to R212 and R221 to R224 you can separate the micro controller the address latch and the PROM from all other circuits on the bus By removing R225 to R232 you can se parate the counter circuits and the GPIB controller from the AD bus The micro controller communicates with the outer world by I O circuits connected to the address and data bus ADO AD15 The WR pin 40 and RD pin 61 signals from U6 control the direction of information These two signals with the address decoding logic produce chip select signals for the I O circuits The address decoding logic uses the A5 A15 to produce chip select s
168. e microcomputer kernel ADO AD15 can be separated from the rest of the counter logic NOTE These resistors are located at the bottom side of the PCA If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Logical Circuits Troubleshooting 5 9 Microcomputer Kernel Functional Level 4b NOTE Itis not possible to run this test before you have run the Keyboard test Test 5 Set the oscilloscope to 2 V div on channel A and B Set the time base to 0 5 us div Use pin 40 on UG to trigger the oscilloscope Run the Address test Test 6 Enter the data code 85 hex 55 on the DATA ENTRY keypad Press ENTER Enter the address code 43690 hex AAAA on the DATA ENTRY keypad Press ENTER Examine the DATA bus lines AD0 AD15 U6 pin 45 60 with the probe connected to the A channel and compare the signal to with Figure 5 13 The interesting part of the data bus signal is the grayed area on the figure Press LOCAL PRESET Enter the data code 170 hex AA on the DATA ENTRY keypad Press ENTER Enter the address code 43690 hex AAAA on the DATA ENTRY keypad Press ENTER Examine the DATA bus lines Press LOCAL PRESET Enter the data code 170 hex AA on the DATA ENTRY keypad Press ENTER Enter the address code 21845 hex 5555 on the DATA ENTRY keypad Press ENTER Examine the DATA bus lines Press LOCAL PR
169. e potentiometer behind the seal until the display of the timer counter shows 0 5x10 Hz or less Repeat the calibration measurement described above to verify the adjustment Appendix Rubidium Timebase 9 25 Check that the value is stable over time gt 30 min TimeView is an excellent tool for viewing freguency stability over time Attach a new calibration seal sticker so that it covers the hole in the front panel gt a R Reference Adjustment R209 N Transparent Sleeving A R208 Non PCB2 Unlock Standby Ind RUBIDIUM OSCILLAT OR WIRING INPUTAMPLIFIERS ontrol Vo t age Reference nlock Ind ta tor ux Power Supply Ground 24V o gle Power Su pply Ground 17 V U16 Referenca Frequency Ground P REID i J1 1 D MHz P va ua E Refer enca F eque ncy Groun d Ko 0 MHz o m LLI u E et z O E gt m n m Fig 9 8 Location of the Rubidium timebase and its power supply amp distributon amplifiers including the wiring between these units 9 26 Appendix Rubidium Timebase OCXO Range Extended New OCXOs Oven Controlled Oscillators PM9691 amp PM9692 The PM9691 is adjusted to 10 MHz 0 2 Hz when manufactured the PM9692 to 10 MHz 0 05 Hz so there is no need to adjust the freguency directly after installation These oscillators like any oscillator change frequency because of aging Use the table in the Operators Manual Chapter 10 to calcu late when cal
170. ed by accepted by measured by value accepted Fail the system the system the system the system by the system All of these values are results of standard deviation measurements of pulse widths in the range 4 to 50 ns in 2 ns steps For each pulse width 2000 samples are taken Interpolator 6 5 Input Amplifier Full Scale Common B Figure 6 7 Test points and trimmers for the Input am plifiers Step Response e Selup TIME A B Input A B 50 Q DC Manual trigger levels Attenuation X1 Pulse Amplitude Sampling 100 us div Oscilloscope Setting A 10 mV div 10 1 lt 1 5 pF passive probe DC Table 6 5 Step Answer setup NOTE The adjustment must be made at an ambient tempe rature of 25 C Connect the Pulse Generator to the A input of the coun ter B input via the T piece NOTE It is of most importance that the output pulses from the pulse generator does not tilt more that 0 1 of the pul se amplitude Connect the channel A of the oscilloscope via a probe to the other output from the T piece see Figure 6 6 Adjust the amplitude of the oscilloscope until the pulse is 8 divisions high Adjust the probe until the pulse is absolutely flat 6 6 Input Amplifier e Adjustment Channel A Connect the probe to test point X2 Adjust R167 LIN A and C40 1X A until the signal is ab solutely flat Channel B Connect the probe to test point X4 Adjust
171. efective circuits See also Chapter 4 Circuit Descriptions GPIB Interface Troubleshooting 5 19 Safety Inspection and Test After Repalr General Directives After repair in the primary circuits make sure that you have not reduced the creepage distances and clearances Before soidering component pins must be bent on the sol der side of the board Replace insulating guards and plates Safety Components Components in the primary circuits are important to the sa fety of ihe instrument and may only be replaced by compo nents obtained from your local Fluke organization 5 20 Safety Inspection and Test After Repair Check the Protective Ground Connection Visually check the correct connection and condition and measure the resistance between the protective lead at the plug and the cabinet The resistance must not be more than 0 5 2 During measurement the power cord should be moved Any variations in resistance shows a defect Chapter 6 Calibration Adjustments Introduction Reguired Test Equipment PM 2534 Counter CP T H PE 1536 10 kHz 20 Vpp PM 5193 S PC incl CRC GPIB interface program manual PM 5781 Signal generator generator 1300 MHz 6062A Sampling oscilloscope FET probe P Passive probe 10 1 lt 1 5 pF PM 8926 Y9103 PM oat 02 Power splitter 50 Q 4W PM 9584 9584 T piece PM 9067 PM 9897 7 07 10 MHz reference 1x107 SM 9691 9691 PM6685R BNG BN
172. elect 10X on input A Connect the probe to test point X2 For trimmers and testpoints see Figure 6 6 Adjust C1 10X A and C432 until best possible pulse without any overshoots or undershoots Adjust C1 10X A until the tilt of the top line is 0 3 V See Figure 6 7 Remove the probe Read the counters display Adjust C40 10X A until the displayed value has increa sed 10 to 30 mV Shift between 1X and 10X and check that the displayed value does not differ more than 50 mV 1X Attenuator channel B NOTE Four digits on the display Connect the probe to test point X4 For trimmers and testpoints see Figure 6 6 Adjust C38 1X B until the tilt of the top line is 0 3 V See Figure 6 7 Remove the probe Read the counters display Adjust C38 1X B until the displayed value has increased 5 to 10 mV 10X Attenuator channel B NOTE Three digits on the display Select 10X on input B Connect the probe to test point X4 For trimmers and testpoints see Figure 6 6 Adjust C9 10X B and C436 until best possible pulse without any overshoots or undershoots Adjust C9 10X B until the tilt of the top line is 0 3 V See Figure 6 7 Remove the probe Read the counters display Adjust C38 10X B until the displayed value has increa sed 10 to 30 mV Shift between 1X and 10X and check that the displayed value does not differ more than 50 mV Sensitivit
173. emit ter is 500 mVp p Level Detector Control Disconnect the signal generator from the counter Check the level detector according to the table below Connect the signal generator to the HF input of the counter Set the input freguency to 100 MHz and the amplitude to 13 dBm 1 VRMS Check the level detector according to Table 5 10 Test point Without input With input signal signal 4 4 V TS8 b 4 2 V Table 5 10 DC voltages Level detector PM 9621 Divider and Differential Stage Control Connect the oscilloscope to C2 pins 6 and 7 Check that the amplitude is 800 mVp p and that the pe riod time is 2 56 us frequency 390 kHz The DC level is 4 5 V Connect the oscilloscope to TS3 b and TS4 b Check that the amplitude is 800 mVp p and that the pe riod time is 2 56 us freguency 390 kHz The DC level is 3 8 V Connect the oscilloscope to TS5 c and TS6 c Check that the amplitude is 800 mVp p and that the pe riod time is 2 56 us frequency 390 kHz The DC level is 4 5 V Signal Measurement Connect the signal generator to the HF input of the counter Connect the Y input of ihe oscilloscope to TP3 and TP4 GND Connect the X input of the oscilloscope to the horizontal output of the generator Set the freguency range of the generator to 70 1300 MHz Set the amplitude to 15 dBm 40 mVRMS Figure 5 25
174. ference voltage circuit 2 5 V 086 Reference voltage inverter circuit 2 5 V 059 A multiplexer to select positive or negative reference voltage and Full scale B or Full scale common B trim mers U60 Buffer circuits U61 and U62 Two Digital to Analog converters U63 and U64 Two current to voltage converters U65 and U66 These circuits convert the current at the lOUT pins of the DACs to a voltage This signal has a range of approximately 2 1 V to 2 1 V Two output buffers and RC filters for the frigger level out puts on the rear panel U67 TRIGGER LEVEL B TRIGGER LEVEL B TRIGGER LEVEL TRIGGER LEVEL A Hardware Functional Description 4 9 Power Supply e Primary Circuits The power supply generates five regulated DC supply volta ges to the counter It also generates some other supply vol tages for special purposes The power supply block also contains the ON STANDBY logic see Figure 4 12 The main building block of the power supply is the primary switch mode power circuits A rectifier make a DC voltage of the line power AC voltage 90 V to 265 V before it is fed to the switch circuits After a line power filter in the power inlet a fuse and an NTC resistor protect the power supply The fuse F1 should only blow if a catastrophic error occurs on the pri mary side of the power supply A short circuit on the secon dary side should not affect the primary side To minimize the cu
175. fier circuits R13 R14 and R15 attenuate the HF signal 3 dB to pre vent overloading of the amplifier circuit IC1 IC1 amplifies the HF signal approximately 15 dB TS1 amplifies the fre quency range 0 9 to 1 4 GHz by 8 dB to increase the le vel for these frequencies due to the falling frequency re sponse of IC2 TS2 is an impedance converter see Figure 4 28 Divider 5V 5V 5V From Amplifier Figure 4 29 Divider and ECL converter circuits The divider IC 1C2 divides the input frequency by 256 The output frequency is max 5 5 MHz see Figure 4 29 ECL output TS3 and TS4 convert the output signal from IC2 to ECL le vels The rise and fall time of the output signa must be shortened This is done in the differential amplifier TS5 and TS6 TS7 restores the ECL levels and buffers the single en ded output signal see Figure 4 29 Level detector 5V 5V tat ST From Differential KO Va amplifier From ECL Amplifier output C13 Reference R26 R31 level L6 C16 IC3 GR Figure 4 30 Level detector C13 C16 and L6 form a filter making the frequency re sponse of the signal to the level detector diode GR7 the same as the signal to IC2 see Figure 4 30 The detector voltage is filtered and fed to IC3 Diode GR15 prevents the level from being too negative IC3 is then lok ked The first stage in IC3 amplifies the level approximate ly 15 times and the second stage is a Schm
176. function the inverse output from the buffer stage V4 of channel B is used see Figure 4 10 This signal called EVENT DELAY is connected to the 00504 circuit U56 via the transistor V12 and the IC U47 which works as a multiplexer The EVENT DELAY signal is also used by the HOLD OFF logic when the input pulses should be counted see Coun ter circuits on page 11 V12 EVENT DELAY 100MHz Figure 4 10 Event delay Calibration Circuits U93 and a delay line on ihe PCA generates a xx ns long pulse and feed it to channel B input on the counter IC U56 This pulse is initiated by the u controller pulse CAL TEST PULSE Trigger Level Circuits The trigger level circuits generate the trigger levels to the A and B inputs The trigger level range is 5 1 V to 5 1 V with a resolution of 1 25 mV As the input amplifier attenua tion is approximately about 2 4 times the trigger level cir cuits generate a DC level that has the same attenuation This means that the output of this circuit has a range of 2 2 V to 2 2 V with a resolution of 0 5 mV To get the high resolution two 12 bit DACs are used The supply vol tages to the trigger level circuits are filtered to prevent noi se from the digital circuitry to infiuence the trigger level see Figure 4 11 U59 LH _ E eb rii Full scale B Full scale HI common B Full scale A Figure 4 11 Trigger level circuits The trigger level circuits consists of Re
177. g X10 Attenuation of 11 X1 Attenuation blinkingo fl Table 2 5 Trigger level check Select A gt B Connect the signal to channel B Select AC coupling on channel B and repeat the pre vious settings for channel B Connect the signal to channel A Only the trigger indicator for channel A should be blinking Press COM A Both indicators should be blinking Connect the signal to channel B No trigger indicator should be blinking Reference Oscillators X tal oscillators are affected by a number of external condi tions like ambient temperature and supply voltage but also by ageing Therefore it is hard to give limits for the allowed frequency deviation The user himself must decide the li mits depending on his application and recalibrate the oscil lator accordingly See the Preventive Maintenance chapter Max ageing year Max Max temperature ageing dependence month Table 2 6 Deviation for PM 9690 and PM 9691 after 48 hours warm up time To check the accuracy of the oscillator you must have a ca librated reference signal that is at least five times as stable as the oscillator that you are testing see the following ta ble If you use a non 10 MHz reference you can use the mathematics in PM 6681 to multiply the reading Set the counter to default settings by pressing PRESET Connect the reference to input A Check the
178. h zero OK Ram bank1 2080h zero OK 4000h zero OK Ram bank0 2080h zero OK 4000h zero OK Asics 0291h 02A5h OK PHILIPS PM6681 0 MAIN X1 02 Mar 24 1994 10 30 26 GPIB X1 13 Mar 01 1994 123 Hardware Functional Description 4 23 This page is intentionally left blank 4 24 Hardware Functional Description Chapter 5 Repair Preventive Maintenance Calibration To maintain performance of PM 6681 we recommend that you calibrate your instrument every year or more often if greater time base accuracy is reguired Calibration should be performed with traceable references and instruments at a certified calibration laboratory Contaci your local Fluke service center for calibration To know the present status of your instrument test your ti mer counter from time to time The test can be made accor ding to the information in Chapter 2 Performance Check Oscillators The freguency of the reference crystal oscillator is the main parameter affecting accuracy in a counter The fre guency is affected by external conditions like the ambient temperature and supply voltage but also by aging When recalibrating the reference crystal oscillator is compensa ted only for deviation in freguency due to aging Some important points The high stability oscillators have been built into an oven in order to keep the oscillator temperature as stable as possible Continuous operation is also important for sta bility After a powe
179. he resistor R337 to ground Pin 5 on U76 will go high making the transistor V52 active and the relay K1 will draw Furt her more a short pulse is generated at V7 telling the u con troller that the ON button have been pressed This makes it possible to sense the difference between plugging in the line power cable or pressing the ON button When STAND BY is pressed the u controller sets the flip flop U76 by the signal SET STAND BY and the relay K1 will fall The LOCAL PRESET button are connected directly to the AND gates U21 and U87 The STAND BY indicator on the front panel is controlled by the 5 V via V51 5 V off lights the STAND BY LED Hardware Functional Description 4 17 GPIB Interface U14 amp U15 U16 amp U17 U79 U80 Figure 4 23 GPIB interface The GPIB interface controls the communication between the internal microprocessor and the external GPIB bus see Figure 4 23 Communication between the GPIB control circuit U78 and the external GPIB bus is done via the bi directional bus drivers U79 and U80 U78 is controlled from the micro processor by writing and reading in the internal control regi sters If U78 has a message for the microprocessor it uses the GPIB interrupt signal The address of the GPIB bus is software controlled 4 18 Hardware Functional Description U9 to U13 are the RAM used to execute the program U14 and U15 are address latches Analog Output Analoc Figure 4 24
180. i stors R64 and R65 e Common B via A Figure 4 7 Common B via A The output signal from V23 V26 can also be fed to the B channel comparator see Figure 4 7 This is done in Com mon B via A mode Relay K9A and K9B connects the com parator inputs pin 7 A and 10 B in parallel Simultane ously relay K9B disconnects the output signal from input B to the B channel comparator In separate mode the relays connect the output signal from input B to B channel compa rator input pin 10 K9B and disconnect the signal from in put A to the B channel comparator pin 10 K9A The resistors R101 and R118 set the impedance in the comparator stage to 100 Q Hardware Functional Description 4 7 Input Amplifier B Input channel B is the same as input channel A with the fol lowing exceptions The Common B via A switches that connect the B chan nel comparator to the input signal on channel A The B channel delay line The B channel has no lowpass filter The B channel has a special event delay signal output to 000504 U56 Delay Line To Counter circuits Figure 4 9 Delay lines A line of approximately 65 cm is placed between the B channel comparator output pins 15 and 16 and the buffer stage V33 and V4 see Figure 4 9 This delay line is a 4 8 Hardware Functional Description part of the circuit board It should compensate for delays in 000502 U58 e Event Delay Also for use in the arming
181. iCcax 3 cap 8 8u 18V C47 ITA 100nF MiniCosx 3 6 98 16V 10 MHz Cs JBA 100nF MiniCoax 3 Appendix Schematic Diagrams PM9671B 9 33 This page is intentionally left blank 9 34 Appendix Schematic Diagrams PM9671B Chapter 10 Index 1 3 GHz HF input See PM 9621 1 3 GHz Prescaler See PM 9621 10 MHz OUT See Internal Reference output 100 MHz Frequency Multiplier Adjustment 6 3 Description 4 15 10X Attenuator Adjustment 6 6 16 MHz Oscillator Adjustment 6 3 Description 4 14 1X Attenuator Adjustment 6 6 2 7 GHz HF input See PM 9624 2 7 GHz Prescaler See PM 9624 4 5 GHz HF input See PM 9625 4 5 GHz Prescaler See PM 9625 A Aging 5 3 Analog Output Adjustment 6 8 Description 4 18 Repair 5 18 Analog Output Location 4 19 Arming Delay Description 4 13 ASIC Stimuli 5 13 AUX MENU Test routines 4 23 B Battery Replacing 3 4 to 3 6 Block Diagram Description 4 2 to 4 3 Buffer Stage 4 7 Burst Description 4 13 C Calibration Circuits 4 8 CALVER81 6 5 Caution statements 1 2 Circuit Symbols 8 2 CMOS Logical levels 5 4 Colored Areas 8 2 Common BviaA 4 7 Comparator Stage 4 7 Component Numbers 8 2
182. ibration is due The complete specifications can be found in the same manual Chapter 11 Required test equipment Instrument Required specification Counter with Rubidium 10 MHz 0 0 Hz Uncer PM6681R Reference tainty s 15107 PM6685R Table 9 1 m Setup Connect the counter to the line power Switch on the counter Set the counter to default settings preset Make the adjustment at an ambient temperature of 23 C if possi ble The oscillator must have been operating continuously for 48 hours before an adjustment Connect the 10 MHz OUT socket of the counter to be adjusted rear panel to the Input A of the PM6681R PM6685R Set up the PM6681R PM6685R Measuring time 0 5 s 50 input impedance Frequency A measurements m Adjustment The oscillator has a voltage controlled adjustment range This range is divided into five fixed steps set via DIP switches and a trimmer to fine tune the control voltage Normally the range of the trimmer should be sufficient to compen sate for the aging that occurs during at least two years of operation Fine adjustment Adjust the trimmer to better than 10 MHz 0 2 Hz PM9691 or 10 MHz 0 05 Hz PM9692 i e 20 resp 5 in the last two digits on the PM6681R PM6685R display If this adjustment is OK reassemble the counter Coarse adjustment Make this adjustment only if the trimmer range is insufficient to ad just the
183. icators and Controls NOTE This test must be performed in the sequence given Press the PRESET key to set the Timer Counter in the default setting Select Non AUTO X1 attenuation and 1 MQ input impe dance for channel A Connect the following signal to channel A Sine 10 kHz 0 9 Vpp and 0 50 Vpc Verify that the three modes for the trigger indicator are working properly by changing the trigger level Press the SET A key and enter 1 via the keyboard then verify by pressing ENTER Check the trigger indi cator according to Table 2 4 Press the SET A key and enter 1 via the keyboard then verify by pressing ENTER Check the trigger indi cator according to Table 2 4 Press the SET A key and enter O via the keyboard then verify by pressing ENTER Check the trigger indi cator according to Table 2 4 Manually Trigger Pass Fail set trigger indicator Input A level uv off j uv o O blinking J Table 2 4 Trigger indicator check Select SWAP A B and AC coupling on channel B and repeat the exercise for channel B Trigger level check Deselect SWAP A B connect the generator to chan nel A and check the trigger settings and indicators accor ding to Table 2 5 Trigger setting Trigger Pass Fail indicator Input A Input B DCcoupling om LI SETA 07V blinking Eu SETA 02V blinking AC coupling amp 1 MQ Impedance blinkin
184. ignals Chip select si gnals are generated for PROM U16 and U17 and RAM U9 to U13 The input amplifier relay driver U18 display scanning cir cuit U19 and U20 and the GPIB driver U78 The trigger level circuits U63 U64 and U60 and the counter circuits U56 and U58 To show that the counter measures a gate indicator is pla ced on the front panel It is controlled from the micro con troller U6 pin 28 via V54 The blinking of the LED is softwa re controlled and does not necessarily reflect the true sta te of the measuring hardware The RAM U13 has battery backup If the counter is ON or in STAND BY the 12VREG gives power to the RAM pin 28 via U7 and D30 to get 5 V If the counter is not con nected to the line power at all the 3 V battery gives power to ihe RAM The Schottky diode D31 isolates the battery and preserves power when 12VREG is present When this happens pin 27 of the RAM is low and the RAM goes to ihe power down mode At this point the RAM needs a 2 V supply voltage The version of the main PCA are identified by the resistors R524 and R525 This DC voltage are fed into the analog in put ACHO of the u controller U6 which recognizes the bo ard This makes it possible to make the software backward compatible The different prescalers are identified in a similar way R192 to R194 and R203 to R204 forms a resistor network that generates different DC voltages at the ACH1 input of the u contr
185. iques to locate the fault Remove the jumper J15 Check the STAND BY voltages according to Table 5 5 U91 pin 11 amp 12 Table 5 5 Stand by voltages Reinstall the jumper J15 Check the curveforms according to Figure 5 8 and Figure 5 7 to verify the primary circuits Use the heat sink of V55 as ground Figure 5 8 Typical curves of the power supply NOTE U91 and U92 are located at the bottom side of the PCA Secondary circuits Connect the power cable to the counter Switch ON the counter CAUTION If you adjust the 5 V trimmer you have to adjust the complete instrument Check the POWER ON voltages according to Table 5 6 Use L41 as around X15 5 01 V 30 mV X16 5 1 V 50 mV X14 7 V 100 mV X17 12 V 100 mV Table 5 6 Power on voltages NOTE If the 5 V voltage is outside the specification all ot her levels will be wrong since they are based on the 5 V level If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Power Supply Oscillator Functional Level 2 Figure 5 9 Test points and jumper for testing the oscil lators e Standard Oscillator Be sure that jumper J12 are in the STD position see Figure 5 9 Check that 10 MHz is present at U56 pins 34 35 36 and pin 37 Check that 10 MHz is present at the rear panel
186. itor 18 pF 2 0 18PF 300V Capacitor 100 nF 10 63V X7R 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 15 pF 5 63V NPO 1206 Capacitor 2 2 pF 0 25pF 63V NPO 1206 Capacitor 33 pF 5 63V NPO 1206 Capacitor 15 pF 5 63V NPO 1206 Capacitor 100 nF 1096 63V X7R 1206 Capacitor 6 8 pF 0 5pF 63V NPO 1206 Capacitor 2 2 pF0 25pF 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1 nF 5 63V NPO 1206 Capacitor 1 nF 5 63V NPO 1206 Capacitor 220 pF 20 200V Capacitor 33 nF 10 50V X7R 1206 Capacitor 33 nF 10 50V X7R 1206 Capacitor 33 nF 10 50V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 47 nF 10 250V POLYCARB Capacitor 330 nF 20 250V Capacitor 220 pF 20 200V Capacitor 100 uF 20 35V 2M 8 2x11 Capacitor 220 pF 20 200V Capacitor 100 pF 5 63V NPO 1206 Capacitor 22 pF 5 200V NPO 1206 Capacitor 4 7 nF 10 63V X7R 1206 Capacitor 4 7 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 470 F 20 35V 2M 12 5x20 Capacitor 470 F 20 35V 2M 12 5x20 Capacitor 10000 LF 20 6 3V 3M 18x35 Capacitor 1 nF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Part Number 5322 124 10455 5322 124 10455 5322 124 80334 5322 124 10455 5322 124 10687 5322 124 11418 5322 124 10687 5322 124 10687 5322 126 13131 5322 124 11418 5322 124 11418 4822 122 33496 5322 126 13128 5322 125 50049 5322 125 50049 5322 125 50049 4822 122 317
187. itt trigger The output from the Schmitt trigger can block via TS8 the ECL output signal A low output signal from IC3 pin 7 makes TS8 conduct The ECL output signal will be 4 5 V If IC3 pin 7 is high TS8 is not conducting and the output signal from TS7 is not blocked The Schmitt trigger is controlled from the first amplifier in IC3 If the level on IC3 pin 3 de tected level is lower than the reference level on IC3 pin 2 an HF signal with sufficient level present IC3 pin 1 is low and the Schmitt trigger output is high thus not blocking the ECL output signal The reference level on IC3 pin 2 is set by trim potentiometer R30 GR8 GR9 and R28 form a temperature compensation circuit to compensate for the temperature behavior of the detector diode GR7 For te sting purposes the level detection can be overruled by the signal TEST GO A high level makes TS10 conduct and that enables the ECL output signal despite the HF input si gnal amplitude The ECL output signal can also be swit ched off despite the level detection A high level on signal NOT C makes TS9 conduct and thus makes the level to TS8 low TS8 makes the ECL output signal 4 5 V e Prescaler 2 7 GHz PM 9624 Voltage regulator Not C Detector L Input i i i p Amplifie Amplifier Ampliler AGC 1 AGC 2 Detector Test go Figure 4 31 PM 9624 Block diagram The PM 9624 prescaler cannot be repaired at a local workshop It must be sent to the factory for
188. kohm 1 125W 100PPM 1206 4822 051 54702 R558 RESISTOR 2 7ohm 5 0 25W RC 01 1206 4822 051 10278 R559 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R56 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R560 RESISTOR 100 chm 1 0 125W 100PPM 1206 4822 051 51001 R561 RESISTOR 270 ohm 1 125W 100PPM 1206 4822 051 10271 R562 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R563 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R564 THERMISTOR 2 2Kohm 3 0 25W NTC 5322 116 30458 R566 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R567 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R568 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R569 RESISTOR 100 ohm 1 0 125W 100PPM 1206 4822 051 51001 R57 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R570 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R571 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R574 RESISTOR 100kohm 1 0 125W 100PPM 1206 4822 051 51004 R577 RESISTOR 220 00hm 1 125W 100PPM 1206 4822 051 52201 R578 RESISTOR 220 00hm 1 125W 100PPM 1206 4822 051 52201 R579 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 4822 051 51002 R58 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R580 RESISTOR 3 30kohm 1 125W 100PPM 1206 4822 051 53302 R581 RESISTOR 4 70kohm 1 E 100PPM 1206 4822 051 54702 R582 RESISTOR 56 ohm 1 125W 100PPM 1206 4822 051 10569 R583 RESISTOR 1 00kohm 1 125W 100PPM 1206 4822 051 51002 R584 RESISTOR U 1 O dasi 100PPM
189. ll ECL inputs in OQ0502 get their reference VBB from an external ECL circuit U132 The GET signal from an optional GPIB interface can con trol the start of the measurement EXT REF R2 6 R278 EN Figure 4 19 External reference circuits Oscillator Circuits e CPU oscillator The u controller U6 works with 16 MHz A 16 MHz crystal B1 is connected to the XTAL inputs of the u controller This frequency is divided by two by the u controller and is used by the GPIB controller U78 e Standard oscillator The 10 MHz reference oscillator is used as a reference for the measuring logic see Figure 4 18 For the internal oscillator there are several optional oscilla tors to choose from The uncompensated 01 oscillator is al ways mounted in the PM 6681 If a better oscillator is nee ded it should be connected to the opt osc connector P105 A TCXO PM 9678B oven oscillator PM 9690 or oven oscil lator PM 9691 can be mounted If this is done the oscillator type jumpers J12 should be placed in the OPT position The 01 oscillator consists of a crystal B2 C107 to C109 R239 R240 and the trim capacitor C114 C114 adjusts the frequency If an optional oscillator is mounted the 10 MHz signal is amplified in a two stage amplifier V40 and V41 e External Reference Input The external reference input can handle frequencies in steps from 1 MHz to 10 MHz 1 1 111 1 25 1 4285 1 6667 2 2 5 3 3333 5 amp 10 MHz R
190. lowing the adjustment instructions in Chapter 6 Calibration Adjustments Logical Levels The PM 6681 contains logic of four families The levels for these families are listed in Table 5 2 P tee ECL ECL Signal ground _ Input voltage x Output voltage 1 PP Bias ref voltage Ves 37V aw Table 5 2 Logical levels 5 4 Troubleshooting Required Test Equipment To be able to test the instrument properly using this manu al you will need the equipment listed in Table 5 3 The list contains not only suggested Fluke test equipment but also the critical parameter specifications required if you have in struments from other manufacturers Model No DMM 1 PM25180r77 50 Mhz 2 channel PM 3050 Signal generator 1300 MHz 6062A BNC BNC cables Table 5 3 Required test equipment Operating Conditions Power voltage must be in the range of 90 to 260 Vac Introduction INPUT AMPLIFIER Level 9 x Figure 5 4 Functional levels The troubleshooting strategy in PM 6681 is an integrated part of the overall service strategy for the instrument This instrument is hierarchically designed in different levels see Figure 5 4 and troubleshooting can be performed in any design level if the lower levels are OK It is therefore impor tant to disconnect all options in the beginning of the trou bleshooting procedure Running Test Programs The service functions are activated
191. m 1 125W 100PPM 1206 4822 051 52201 R527 RESISTOR 33 0 ohm 1 125W 1 ite M 1208 4822 051 10339 R528 RESISTOR 47 ohm 1 125W 100PPM 120 5322 116 80448 R529 RESISTOR 10 0kohm 1 0 125W 00k EM MI 1206 4822 051 51003 R53 RESISTOR 56 0kohm 1 125W 100PPM 1206 5322 117 10971 R530 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R531 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R535 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R536 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R537 RESISTOR 120 ohm 1 0 125W 100PPM 1206 4822 051 10121 R538 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R54 RESISTOR 470 0Kohm 0 5 0 125W RC 03G 5322 117 10858 1206 R544 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 4822 051 51002 R545 RESISTOR 47 0kohm 0 5 0 125W RC 03G 1206 5322 117 10857 R546 RESISTOR 33 0 ohm 1 125W 100PPM 1206 4822 051 10339 R547 RESISTOR 47 ohm 1 125W 100PPM 1206 5322 116 80448 R548 RESISTOR 330 kohm 1 125W 100PPM 1206 5322 117 10969 R549 RESISTOR 330 kohm 1 125W 100PPM 1206 5322 117 10969 R55 RESISTOR 150 ohm 1 0 125W 100PPM 1206 4822 051 51501 R550 RESISTOR 18 0kohm 1 125W 100PPM 1206 5322 117 10034 R551 RESISTOR 10 0kohm 1 0 125W 100PPM 1206 4822 051 51003 R552 RESISTOR 2 20kohm 1 125W 100PPM 1206 4822 051 52202 R553 RESISTOR 2 20kohm 1 125W 100PPM 1206 4822 051 52202 R555 RESISTOR 10 Mohm 10 0 25W RC 01 1206 4822 051 10106 R556 RESISTOR 47 0kohm 0 5 0 125W RC 03G 1206 5322 117 10857 R557 RESISTOR 4 70
192. m 196 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 120 ohm 1 0 125W 100PPM 1206 RESISTOR 10 Mohm 10 0 25W RC 01 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 2 70kohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 ISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTO 1 00kohm 196 0 125W 100PPM 1206 RESISTOR 10 Mohm 10 0 25W RC 01 1206 RESISTOR 10 0 ohm 19h 0 125W 100PPM 1206 RESISTO 100 ohm 1 O 129W 100PPM 1205 RESIS 1 80kohm 1 125W 100PPM 1206 10 0 ohm 1 0 ECK 100PPM 1206 RESISTOR 12 0kohm 1 125W 100PPM 1206 RESISTOR 8 20kohm 1 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 680 ohm 1 125W 100PPM 1206 RESISTOR 1 00kohm 1 0 125W 100PPM 1206 RESISTOR 220 00hm 1 125W 100PPM 1206 RESISTOR 27 0 ohm 1 125W 100PPM 1206 RESISTOR 100 ohm 1 0 125W 100PPM 1206 RESISTOR 27 0 ohm 1 125W 100PPM 1206 100 ohm 1 0 125W 100PPM 1206 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 3 ohm 1 125W 100PPM 1206 RESISTOR ohm 1 125W JOKIA 1206 RESISTOR 1 Sokohm 1 0 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 120 RESISTOR 38 ohm 1 125W 100PPM 1208 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1508 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 33 0 ohm 1 125W 100PPM 1206 RESISTOR 39 ohm 1 125W 100PPM 1206 RESISTO
193. mber 4822 122 33496 4822 122 33496 5322 124 80335 4822 122 31746 4822 122 33496 4822 122 31746 4822 122 33496 5322 126 10527 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 4822 122 32442 4822 122 32442 4822 122 32442 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 124 40723 4822 122 33496 5322 125 50051 4822 122 33496 5322 125 50051 4822 122 32442 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 33496 4822 122 31746 5322 124 11418 5322 124 10455 4822 122 33496 x Pos C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C106 C107 C108 C108 C110 C111 C112 C113 C114 C115 C116 C117 C118 C119 C120 C121 C122 C125 C126 C127 C128 C129 C130 C131 0132 C133 C134 C135 C137 C139 C140 C143 C144 C145 C146 C147 C148 C149 C150 C151 C152 C153 Description Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V
194. mm mam mam m S Nye Moo pos paa nap 900 01 Z A BAV99 SOT23 RECT E 4A KBU4K 800V AW56 70V 5 BYW29 200 102205 BA MBR760 60V TO22 K IGEK L DBAR 10217 SOT23 1 10A BAV99 SOT23 35 W BZX84 C8V2 SOT23 BYV26E DOD57 NA KVA C18 SOT23 AV99 SOT23 BANOS 200V SOT143 W BZX84 C18 SOT23 W BZX84 C18 W BZX84 C8V2 SOT23 BAV23 200V 5071143 A BAV23 200V 507143 BYW29 200 TO 220AC 16 K W LODBAR TO218 OA BAV99 SOT23 OA BARE 30V S0123 OA BAV99 SOT23 SU ba B5V6 S 50123 OA BAV99 S0T23 0A BAV99 SOT23 ABAV23 200V SOT143 OA BAV99 SOT23 DIO OA BAT18 35V 1PF SOT23 DIODE OA BAT18 35V 1PF S0123 FUSE HOLDER 011 656 5X20m BATTERY HOLDER 20mm BH800 KNAPPCELL CONNECTOR 3 POL F095 SINGLE ROW ES ti mes OA LA JA SLS mL me vc O gt gt lt O O 000 200000 OOO YUU TOT TOI S o gt gt PANAPO 3 10A 2 3 3 3 2 2 00 000 000 000 00 FM Imn Mm mmm Mm NO0O000000 GOO A Ka S OUUUUU KOO JUO UUUUUOU OD DOO OU YOU UUU UUU OOO D gt gt 000000 900990 MM Mmm mm mmm 000 00000000 LULU 0000 UU OUO 1 1 1 3 10A 1 1 2 4 1 CONNECTOR 3 POL F095 SINGLE ROW CONNECTOR 3 POL F095 SINGLE ROW CONNECTOR 2POL F095 JUMPER GREY CONNECTOR 3 POL F095 SINGLE ROW CONNECTOR 2POL F095 JUMPER GREY CONNECTOR 3 POL F095 SINGLE ROW CABLE ASSY PM6681 CONNECTOR 2 POL F095 SINGLE ROW CONNECTOR 24 POL Lal S Q 00DS5G CONNECTOR 2 POL F095 SINGLE ROW CONNECTOR 2 POL F095 SI
195. nF 5 63V NPO 1206 Capacitor 10 nF 10 63V X7R 1206 Capacitor 10 nF 10 63V X7R 1206 Capacitor 10 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 2200 F 20 16V RAD 2M 12 5X25 Capacitor 100 nF 10 63V X7R 1206 Capacitor 18 pF 2 0 18PF 300V Capacitor 100 nF 10 63V X7R 1206 Capacitor 18 pF 2 0 18PF 300V Capacitor 10 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1 nF 5 63V NPO 1206 Capacitor 15 uF 20 6 3V 6 0X3 2 MOLD Capacitor 68 F 20 6 3V SOLID AL Capacitor 100 nF 10 63V X7R 1206 Part Nu
196. of the counter Connect the Sampling Oscilloscope via a probe to the test point X19 See Figure 6 4 Adjust the capacitor C346 to 10 cycles 100 ns Connect the Sampling Oscilloscope to the test point X18 Adjust the capacitors C347 C348 and C351 to maxi mum amplitude Adjust the capacitors C346 C347 C348 and C351 to maximum amplitude in sequence until maximum amplitu de is reached at X18 Connect the LF synthesizer with a 10 MHz reference to the EXT REF input of the counter Select EXT REF Change the input frequency 1 kHz If the amplitude is varying with the frequency the capacitors C347 and C348 has to be adjusted again Begin to adjust the the amplitude at 10 MHz 1 kHz Eventuality C346 has to adjusted as well Optional TCXO PM 9678B e Setup Connect the counter to the line power Switch on the counter Press PRESET then press ENTER Connect the 10 MHz reference to the A input of the Counter The adjustment should preferably be made at an ambient temperature of 23 C e Adjustment Adjust the trim capacitor C1 on the optional oscillator un til the counter reads 10 MHz 1 Hz See Figure 6 5 Optional Oven Oscillators PM 9690 and PM 9691 Setup Connect the counter to the line power Switch on the counter Press PRESET then press ENTER Oscilloscope 100ns div Table 6 4 Optional oscillator setup 6 4 Crystal Oscillators Fine adjust PM
197. oller This DC voltage depends of how the pins 12 14 and 16 on P20 are connected to ground and 5 V on the prescalers e Reset Circuit A special reset circuit is included in the design U8 is a spe cial supply supervisor If the 5 V becomes lower than 4 5 V the reset output pin 4 goes low This gives a micro controller resei For test purposes the micro controller can be forced 10 reset by short circuiting the pads J10 The length of the reset pulse is set by C310 2 2 uF gives a pul se of approximately 40 ms The supervisor circuit also con trois the reset pulse during the power on so the micro con troller starts in a controlled manner e Keyboard Scanning U21 amp U87 Interrupt LOCAL PRESET gt SCL gt SDA Figure 4 22 Keyboard scanning All outputs of U19 are set low one after the other If no but ton is pressed all outputs to the latch U20 are high and so are the inputs to the AND gates U21 and U37 see Figure 4 22 When a button is pressed one input on the AND gates will go low An interrupt is generated to the u controller U6 pin P0 7 The u controller reads the latch U20 and the pro gram jumps to a special handler in the SW The ON button are connected to the ON STANDBY logic in the power supply When the counter is in STAND BY the RESET input pin 10 of U76 is kept high and so are the outputs of U76 A press on the ON key will discharge the capacitor C180 via the diode D24 the ON switch and t
198. omes out on RESET OUT The RESET si gnal is clocked through a flip flop by the 100MHZz signal and is then connected to the RESET IN pin of OQ0502 and resets the measuring logic of 000502 The TRA and TRB signals are directly controlling the trig ger LED s on the front panel C315 and C316 connected to TRAC and TRBC inputs control the blinking rate Arming Delay The measuring logic also has a programmable delay with a resolution of 100 ns This delay is used as arming delay and is generated in the OQ0504 It is triggered from OQ0502 by the signal ARDO to SYN1 in 000504 Toget Hardware Functional Description 4 13 B2 C114 External reference frequency multiplier Figure 4 18 Oscillator circuits functional description her with the signal PD1 from 000504 the delayed signal is fed back to the ARDI input on 000502 Instead of a time delay the delay can be programmed to an event de lay The EDC1 input of 000504 are therefore connected to the B input enabling event delay for events on the B chan nel Hold Off A second programmable delay with a resolution of 10 ns is used as hold off It is triggered from OQ0502 by the signal HOS The counter U53 is loaded with a value and clocked with 100 MHz When the counter has come to zero this in formation is sent to 0Q0504 EDC2 and the circuits are re seted The delayed signal is fed back to the HOF input on 000502 Gate Open The signal GATO from 000502 gives a real time in
199. onal Description 4 11 Input A Input B Input C Input E Oscillator Optional oscillator External reference input Y RESET ASICS E Oscillator Rose circuits 3 Counter chains b Stop Interpolator meas IPB measuring 000504 100MHz Og RES EVENT DELAY gt io Pagan m Counting YCY delay 2 uC interface External Hold Off L ircuits 7 IPCA IPCB External inter II polator circuits Figure 4 14 O00502 and 000504 block diagram the resistor R564 and then controls the fan via U99 and V62 4 42 Hardware Functional Description Counter Circuits The PM 6681 measuring logic consists of two ASIC s One high speed bipolar ECL circuit and one CMOS circuit The bipolar SMTC U56 contains the measuring control functions high speed counters and some analog paris used to increase the time resolution The CMOS ASMTC U58 consists of two counter chains for the measurement and logic for measuring the expanded interpolator pulses It also contains two programmable mono flip flops 100 ns resolution an oscillator and an external reference input see Figure 4 16 Interpolator The bipolar circuit has a small analog part This part increa ses the resolution in time and freguency measurements by means of an analog interpolator An analog interpolator is basically a capacitor charged and discharged with different currents ratio approximately 400 A small error pulse is extended with the ratio of these curren
200. onor HOLD OFFSET Kore preset I me ms selecta sos ENTER Hop oston Wap j awer sn FUNCTION 4 VOLTAwam FUNCTION 4 mseraa FUNCTION gt vorraumm Function FRA awe menu acer AAA TRA Fail RESTART ea RESTART 1 STOPARM Ar stoorF RESTART eT PRESET Preset MT Em uM counting Arith OFF Arith ON 1000000000 00 Counting n 1 3000000000 reme joi es 2000000000 wo jf sn ja STAT Stat OFF ge EE 6 times So es Displays all available functions processes and input controls Selected items are blinking Default setting Table 2 2 Keyboard test The LSD digit may vary MENU is not disabled by setting DEFAULT press menu again Performance Check Front Panel Controls 2 3 Short Form Specification Test Sensitivity and Frequency Range Press the PRESET key to set the timer counter in the default setting Select 50 Q input impedance and Non AUTO X1 Connect a signal from a HF generator to a BNC power split ter Connect the power splitter to your counter and an oscillosco pe Set input impedance to 50 2 on the oscilloscope Adjust the amplitude according to the following table Read the level on the oscillos
201. or 1 nF 20 50V X7R 0805 Capacitor 15 pF 5 50V NPO 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 1 pF 5 50V NPO 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 15 F 20 6 3V 6 0X3 2 mold Capacitor 1 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 1 pF 5 50V NPO 0805 Capacitor 3 3 pF 5 50V NPO 0805 Capacitor 3 3 pF 5 50V NPO 0805 Capacitor 22 pF 5 50V NPO 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 2 2 pF 5 50V NPO 0805 Capacitor 10 nF 20 50V X7R 0805 Capacitor 1 nF 20 50V X7R 0805 Capacitor 1 nF 20 50V X7R 0805 Diode 0 03A BAT17 SOT23 Diode 0 03A BAT17 SOT23 Diode 0 03A BAT17 SOT23 Diode 0 03A BAT17 SOT23 Diode 0 03A BAT17 SOT23 Diode 0 1A BAV99 SOT23 Diode 0 03A BAT17 SOT23 Diode BAR 16 1 SOT23 Diode 0 03A BAT17 SOT23 Diode 0 1A BAV99 SOT23 Diode 0 1A BAV99 SOT23 Diode 0 1A BAV99 SOT23 IC 1 2 GHz UPC1652G SO 8 VAR IC 1 3 GHz U833BS IC NE532D DUAL SO 8 Choke 0 1H 10 MLF3216DR10K Part Number 5322 321 22313 5322 447 91673 5322 447 91672 5322 267 60199 5322 267 74032 5322 122 32531 5322 122 34123 5322 122 34123 5322 122 34098 5322 122 34123 5322 122 34123 5322 122 32452 9322 1
202. per 5 5 Test Program 5 5 Timing Counter Circuits 4 13 Trigger Controls Checking 2 4 Trigger Indicators Checking 2 4 Trigger Level Output location 4 19 Repair 5 14 Trigger Level Outputtest 2 6 Trigger Level output Description 4 9 Trigger Levels Adjustment 6 7 Troubleshooting Tree 5 5 TIL Logical levels 5 4 Typical voltages Input Amplifier 5 15 to 5 16 V VMAX VMIN Checking 2 4 Voltage Check 2 4 W Warm up time 2 2 Warning Statements 1 2 Index 10 3 This page is intentionally left blank 10 4 Index
203. r in Default setting by pressing the PRESET Select CHECK Non AUTO and Meas Time 5 ms Connect the oscilloscope to the Gate Open output via a coaxial cable Set the oscilloscope to 1ms division The Gate Monitor output should be a pulse similar to the Figure 2 2 1 Mohm 50 ohm gt 2 8V 14V PPT LET o4v 204v LILLE 11 LLE imsdi Figure 2 2 Signalon gate open output REFERENCE IN Set the counter to Default Setting by pressing PRESET Connect EXT REF out from another counter to input A Connect a 10 MHz 100 Hz 200 mV rms 0 57 V p p signal to EXT REF IN at the rear terminated with 500 Select Ext Ref The display should show 10 MHz Change the input freguency to 5 2 and 1 MHz respec tivly The display should still show 10 MHz Performance Check Rear Input Output 2 5 EXT ARM input Select non AUTO Settings for pulse generator single shot pulse amplitude TTL 0 2 Vpp and duration 10 ns Connect a pulse generator to EXT ARM input Press START ARM key Press SELECT key until display shows POS confirm with ENTER key three times The counter does not measure Apply one single pulse to EXT ARM input The counter measures once and shows 10 MHz on the display TRIG LEVEL A amp B Outputs Press the PRESET key to set the timer counter in the default setting Connect a voltmeter to TRI
204. r interruption the oscillator restaris at a slightly different freguency It will then as time goes on age at an egual rate The stability indicated for ihe oscillators is valid within a temperature range of 0 to 50 C with a reference tempe rature of 23 C If the timer counter is used in a room temperature of 20 to 30 C the temperature stability of a TCXO or OCXO will be increased by a facior of 3 The temperature stability indicated for TCXO and stand ard oscillators are mainly dependent on the ambient tem perature When operating there is always a temperature increase inside the counter which will influence ihe oscil lator 5 2 Preventive Maintenance e Recalibration intervals The Mean Time Between ReCalibration MTBRC is defi ned as Acceptable error Temperature stability Aging MTBRC can be calculated when the total acceptable error and the oscillator specifications are known The total acceptable error is defined as MTBRC Deviatiorof reference frequency A tableerror Accepta Nominal frequencyreference Example A user can accept a maximum of 3 Hz deviation on the 10 MHz freguency of the oscillator This resulis in 3 107 3 Acceptableerror geg 104108 The aging and temperature factors can be selected from the table on page 5 3 The value of the aging factor is correctly selected from the table when the calculation of MTBRC results in 1 to 30 day
205. readout against the accuracy requirements of your application e Acceptance Test As an acceptance test the following table gives a worst case figure after 30 minutes warm up time All deviations that can occur in a year are added together Ta Ta a aa ng reference Fail a sss 150 Hz a 15 Hz er 2Hz ee mu em 1Hz Table 2 7 Acceptance test for oscillators Resolution Test Connect a pulse generator to a power splitter Connect one side of the power spliiter to the A input of the counier via a coaxial cable Connect the other side of the power splitter to the B in put of the counter Settings for the pulse generator Amplitude 1 Vpp high level 1V and low level OV Period approximately 1 us Duration approximately 50 ns Rise time 2 ns Settings for ihe timer counter after Preset Function Time A B Single Press STAT key under PROCESS Press SELECT key until display show ST DEV Meas Time 50 us A and B inputs 50 Q input impedance Non AUTO Trigger level 2 0 5V DC coupling The result should be std dev 0 05 s Rear Input Output 10 MHz OUT Connect an oscilloscope to the 10 MHz output on the rear of the counter Use coaxial cable and 50 O termina tion The output voltage is sine wave shaped and should be above 500 mV rms 1 4 V p p GATE OPEN Output Set your fimer counte
206. ree refer to the functional levels in Figure 5 4 For example Level 3 are egual to Microcontroller 3 Do the microcontroller check later in this Chapter Troubleshooting 5 5 Power Supply Functional Level 1 Figure 5 7 Test points and voltages for the power supply WARNING Live parts and accessible terminals which can be dangerous to life are always exposed inside the unit when it is connec ted to the line power Use extreme caution when handling testing or adjusting the counter Primary circuits To verify the Power supply proceed as follows If the primary fuse is broken there is a short circuit in the primary circuits Use a DMM and try to locate the fault by resistance measuring Remove the cover from the Power Supply WARNING The heat sink inside the power supply is connected to the line power 5 6 Troubleshooting Disconnect L39 and L40 and check the resistance be tween pin 1 and 4 on the transformer T1 see Figure 5 7 If the DMM show a short circuit the fault is proabably a broken transistor V55 Put L39 and L40 back in position Connect the counter to the line power via an insulating transformer with separate windings Set the counter to STAND BY mode Check that the voltage between P19 and P23 is in the range of 90 to 260 VAC Check that the DC voltage between pin 1 and 4 on T is about V2 times the input AC voltage If not use traditio nal faultfinding techn
207. rrent rush to the capacitors at the connection of the power cord an NTC resistor R337 is used The resistan ce is 162 when the resistor is cold but decrease to a few ohms when warmed up by the current The AC voltage is rectified in the bridge rectifier D40 and filtered in C330 C181 C183 and C184 should suppress noise from D40 L20 C173 and C174 forms filters Line filter L20 L39 140 ois L C174 R460 to R463 R467 and R468 SENCE un D ZU V57 IR Figure 4 12 Power supply primary circuits 4 10 Hardware Functional Description L39 and L40 prevent HF noise from the switch circuitry to reach the line power inlet R460 to R463 R467 and R468 gives the start up voltage to the control circuitry U91 U91 outputs a freguency of 120 kHz on OUT pin 10 to the switch transistor V55 When the switch transistor has started U91 will be supplied from the transformer T1 pin 3 via the diodes D50A and D50B Every switch pulse causes a voltage drop over the resi stors R471 to R473 and R558 This voltage feeds the SEN SE input pin 5 of the control circuit U91 When the volt age has reached the internal reference level in U91 the switch transistor V55 is turned off V60 is a blanking transistor that will compensate for high transients generated by the transformer T1 The internal sawtooth generator RC pin 7 in U91 is con nected to the SENSE input via V57 to compensate for low load The regulate
208. rt Number 4822 051 53903 4822 051 51003 4822 051 51003 4822 051 10569 4822 051 52201 4822 051 51001 4822 051 53901 5322 116 80448 5322 116 80448 5322 116 80448 4822 051 51003 4822 051 51004 4822 051 51003 4822 051 51003 5322 116 80448 4822 051 10569 4822 051 53901 4822 051 10569 22 051 10569 4822 051 5100 5322 117 10858 5322 116 82264 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 51001 5322 117 10858 4822 051 51001 4822 051 51001 4822 051 51001 4822 051 10271 4822 051 10569 4822 051 10569 4822 051 51001 4822 051 51002 4822 051 51001 4822 051 10105 5322 116 82261 4822 051 10561 4822 051 51502 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 10569 4822 051 51002 4822 051 10689 4822 051 10689 5322 116 82261 4822 051 53301 5322 116 82261 4822 051 10561 4822 051 54702 4822 051 10121 5322 116 80448 4822 051 54702 4822 051 10271 4822 051 51501 4822 051 51502 4822 051 54701 4822 051 53301 4822 051 54701 5322 116 80448 4822 051 51002 4822 051 51003 4822 051 51003 5322 116 82262 4822 051 53302 5322 117 10858 4822 051 51001 5322 116 80448 4822 051 10229 4822 051 10229 4822 051 51002 4822 051 10181 4822 051 51002 4822 051 51002 5322 117 10971 5322 116 82262 4822 051 52201 4822 051 54701 4822 051 51002 5322 116 80448 4822 051 51002 4855 051 10339 822 051 10339 4822 051 51003 5322 117 1085 4822 0 4822
209. s use 24h 1 to 12 months use month or over 1 year use year not e g 43 days or 17 months or 0 8 ye ars Example The user has the same requirements as in the example above The counter has a PM 9690 oscillator Look up information about PM 9690 in the table on page 5 3 The results will be the following Relative Frequency deviation caused by e Ambient temperature deviation within O to 50 C reference point at 23 C Less than 1 5 10 e Aging year Less than 1 107 Use the MTBRC formula with the above values This gi ves a MTBRC of maximum 3 10 7 1 510 9 421077 See also Figure 5 1 Figure 5 2 and Figure 5 3 2 9 year u O c 2 S gt D A gt No reference frequency O 10 20 Calibration interval PM 9690 PM 9691 Figure 5 1 MTBRC in days Deviation of reference freguency 4 8 12 Calibration interval Standard gt PM 9678B PM 9690 PM 9691 Figure 5 2 MTBRC in months jol O Deviation of reference freguency Calibration interval Standard gt lt PM 9678B PM 9690 PM 9691 Figure 5 3 MTBRC in years NOTE When recalibrating the reference crystal oscillator will be compensated only for freguency deviation caused by aging JL Model Options Stability against PM 9678B PM 9690 PM 9691 lt 1 310 es 107 Temperature 0 to 50 C ref to 23 C Line Voltage lt 1 109 Lei 10 lt 5 x 107 l
210. scillator Connect the counter via a probe to the test point P7 and GND5 Check that the measured freguency is 8 MHz 100 Hz External Reference Input Multiplier Figure 6 2 Trimmers for the 10 MHz Frequency Multi plier e Setup PM 6681 EXT REF LF synthesizer zp _ Frequency 1 MHz Sampling 200 us div Oscilloscope Setting A 1 V div 50 ODC Table 6 2 10 MHz Multiplier setup Connect the LF synthesizer to the REFERENCE INput at the rear of the PM 6681 via a 50 attenuator Connecti the Sampling Oscilloscope to the test point X20 Use a FET probe Adjust C356 to maximum amplitude See Figure 6 2 Standard Oscillator Figure 6 3 Trimmers for the reference oscillator fre quency e Setup Connect the counter to the 10 MHz OUTput at the rear of the PM 6681 The adjustment should preferably be made at an ambient temperature of 25 C e Adjustment Adjust C114 STD OSC ADJ until the counter reads 10 MHz 2 Hz See Figure 6 3 100 MHz Freguency Multiplier P21 OX18 C351 X19D_ AE Deg C3 coso C348 C347 Figure 6 4 Trimmers for the 100 MHz Frequency Multi plier Crystal Oscillators 6 3 e Setup PM 6681 EXT REF LF synthesizer Amplitude Freauency 10 MHz Sampling Time 200 us div Oscilloscope Setting A 1 Vidiv 50 Q DC Table 6 3 100 MHz Multiplier setup Connect the Sampling Oscilloscopes trigger input to the 10 MHz OUT at the rear
211. shows the typical frequency curve of the prescaler ESEE EEEE NYA II LL 100 MHz 300 MHz SOOMHz 700 MHZ 900MHz 1 1GHz 1 3 GHz Frequency Figure 5 25 Typical Frequency Curve PM9621 Troubleshooting 5 17 e Prescaler 2 7 GHz PM 9624 See Chapter 2 Performance Check for verification Sensitivity 10 dBm 20 dBm 2 5 GHz Freguency Figure 5 26 Specified and typical sensitivity of input C with option PM 9624 This prescaler cannot be repaired in a local workshop It must be sent to a Fluke Service Center who will transfer the prescaler to the factory for repair e Prescaler 4 2 GHz PM 96256 See Chapter 2 Performance Check for verification Sensitivity 10 dBm 20 dBm 1 GHz 2 GHz 3 GHz 4 GHz Frequency Figure 5 27 Specified and typical sensitivity of input C with option PM 9625B This prescaler cannot be repaired in a local workshop It must be sent to a Fluke Service Center who will transfer the prescaler to the factory for repair e Prescaler 4 5 GHz PM 9625 See Chapter 2 Performance Check for verification Sensitivity 1 GHz 2 GHz 3 GHz 4 GHz Freguency Figure 5 29 Specified and typical sensitivity of input C with option PM 9625 This prescaler cannot be repaired in a local workshop It must be sent to a Fluke Service Center who will transfer the prescaler to ihe factory for repair 5 18 Troubleshooting GPIB interface and Analog output Functional Level 10 Fig
212. ssible for the u controller to get a quick knowledge about the input voltage e Comparator Stage B Counter x circuits jmpedance converter Figure 4 8 Comparator and buffer stages The comparator stage converis the analog signal from the impedance converter stage to a square wave see Figure 4 8 This circuit consists mainly of the high speed integra ted comparator U3 and a separate trigger level circuit con nected to the comparator at pin 8 via resistor R87 A DC level in the range of approximately 2 V to 2 V are generated by the trigger level circuits which are described later This covers a dynamic range of 5 V since the input si gnal is divided by a factor of about 2 4 before it reaches the comparator The counter is provided with fixed hysteresis i e it is not controllable via the front panel or GPIB e Buffer Stage Before the signal is fed further into the ASIC 000502 U58 it has to be converted by the buffer stage see Figure 4 8 The negative ECL logic levels 0 9 V to 1 7 V from U3 pins 2 and 3 are converted to a single ended si gnal with positive ECL logic levels 4 1 V to 3 3 V The buffer is a differential amplifier consisting of the two transistors V27 and V28 whose bases are fed differentially from the two comparator outputs Resistor R63 sets the current in the stage Resistors R66 and R67 serve as cur rent limiters to stabilize the stage and the two collector res
213. t 5 407 10 Warm up Time n a n a 15min lt 15 min to Reach 107 of Final Value Table 5 1 after 48 hours of continuous operation Battery Replacement To preserve data and variables needed for the use of PM 6681 a lithium battery is included The lithium battery has an estimated lifetime of five to ten years We recom mend an replaceing the battery every five years to avoid loss of data in operation When battery is empty the timer counter will lose all set tings and any data in memory if disconnected from line power See Reinstalling the Battery on page 3 4 Preventive Maintenance 5 3 Troubleshooting General Quick Troubleshooting The PM 6681 is a highly integrated Timer Counter with de dicated LSI counter circuits and microcontrollers that con trol the complete units The microcontroller can help you to locate faulty parts by running test programs and generating stable signal patterns on the bus If the microconiroller does not work or the fault is in a part of the counter that cannot be accessed by the microcontroller traditional fault finding must be performed Where to Start After reading the safety instructions continue with this Chapter for faultfinding 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 do the checks in Chapter 2 Performance Check Recalibrate if reguired by fol
214. t is also va lid for channel B see Figure 4 4 Four main stages makes the input amplifier Input stage impedance converter stage comparator stage and buffer stage e Input Stage The input stage contains 50 0 1 MQ impedance selector 1X 10X attenuator AC DC coupling Voltage limiter 50 2 1 MQ impedance selector To voltage limiter R135 to a R146 To LF path Figure 4 3 Impedance selector 1X 10X attenuator and AC DC coupling Relay K2A select 50 2 or 1 MO impedance mode 50 2 is selected via resistors R135 to R146 if the relay switch is Trigger level A Trigger level B Figure 4 4 Input amplifier block diagram closed 1 MQ is selected if the switch is open see Figure 4 3 Depending on selected attenuation the 1 MQ input impedance is determined by different combination of resistors Resistor network R7 R8 R22 to R24 and R92 determents the 1X attenuation Together with 1X resistors R4 to R6 and R10 to R12 sets the impedance in 10X atte nuation The input capacitance in parallel with 1 MQ is 15 pF Resistor R92 immediately after the selector serves both as current limiter with the voltage limiter see below and as impedance matching resistor This resistor also im proves the V Standing Wave Ratio of the amplifier 1X 10X attenuator The 1X attenuator consists of the resistive low frequency di vider which reduces the input signal by a factor of 2 3 R7 R8 R22 to R24 and R92 forms
215. t of schematic diagrams and a new replacement parts list are included in this chapter Instruments having serial numbers gt 784919 belong to the new generation The model PM6681R 676 AF has only been produced with the new Unit 1 board so the serial number is irrelevant in this case Pos Description Part Number yy 1 CIRCUIT DIAGRAM PM6681 BAS81 4031 100 53030 2 PC BOARD PM6081 1 BAS81 4031 100 53050 8 NUT M5M 03 ST FZB 4822 505 10758 9 SCREW MRT 3X10 ST FZB TX 5322 502 21644 11 LOCK WASHER AZ3 2 ST FZ DIN6798A 4822 530 80082 12 SPRING WASHER KBA 3 2 ST FZ DIN137 4822 530 80173 13 WASHER BRB 3 2x8x1 ST FZ 15 LABEL STATUS 25 4X12 7 POLYIMIDE 28 TAPE DOUBLE COATED 6 4mm 4032 39 SHIELD PM6681 40 SHIELD COVER PM6681 54 SCREW MRT 3X06 ST FZB TX 61 CONNECTOR COAX BNC 64 SOLDERING LUG 10 0X15 21 CU SN 66 TOROID CORE 30nH RCC9 6 3 4C65 VIOLET 70 BNC HOLDER PM6680 81 85 t 1 Replacement Parts 4031 105 00120 5322 454 13144 1222 100 20001 5322 459 11185 5322 447 92204 4822 502 11658 5322 267 10004 4031 100 58390 5322 526 10545 4031 100 48830 102 WASHER 9 5X13X2 3 PM6680 81 85 4822 532 10222 205 CABLE WZT2801 Green 731 159 00002 206 CABLE WZT 2801 Grey 731 159 00003 207 STRAP SST 1M NATURELL L 102mm b 2 4 2422 015 05037 208 FXF TUBE 3B4 4822 526 10097 3x2 L 7 2 B1 CRYSTAL 16MHz PM5781 HG 48 U B2 CRYSTAL 10MHz HC 49U 13 B3 CRYSTALFILTER 100MHz MF UB B4 CRYSTALFILTER 100MHz MF UB B5 CRYSTAL 10MHz HC 49U
216. the attenuator see Figure 4 3 The variable capacitor C40 and the parasitic capaci tance forms the capacitive high frequency divider in paral lel with R22 to R24 Variable capacitor C40 adjusts the capacitive attenuator to the same attenuation as the resistive Resistors R4 to R6 and R10 to R12 forms the 10X atte nuator The variable capacitor C1 and the resistors R10 to R12 forms the capacitive divider The parasitic capacitance is in parallel with resistor R10 to R12 C432 set the 10X input capacitance equal to the 1X input capacitance AC DC coupling Relay K4A select AC DC coupling In AC coupling relay K4A is open and the signal is fed through the AC capacitor C5 see Figure 4 3 In DC coupling the relay K4A is clo sed and the AC capacitor C5 is short circuited To protect the relay contact the two resistors R20 and R21 serve as current limiters Chal ro Har Hee aj ja e ES Conv OT arator Hardware Functional Description 4 5 Voltage limiter 5 R26 p oie a pez A To Impedance converter stage v r Figure 4 5 Voltage limiter A voltage limiter that protects the impedance converter against over voltage is placed between the AC DC selector and the impedance converter see Figure 4 5 lt consists of resistor R26 the diodes D18 D62 and D8 to clamp po sitive voltage Resistor R25 plus the diodes D4 D5 and From Protection circuits gt R16 R18 C30 Figure 4 6 Impe
217. the oscilloscope to 0 2 V div and 50 us div Check the output signals from the uC U6 see Figure 5 10 Use test pin P5 to trigger the oscilloscope The timing diagram Figure 5 11 shows the signals ge nerated by the stimuli program If you find any fault continue with traditional troubleshoo ting techniques and replace defective circuits See also Chapter 4 Circuit Descriptions Logical Circuits NOTE Check that activity is going on at U6 pin 62 ALE U6 pin 67 RD U6 pin 63 INST U6 pin 40 WR WRL U6 pin 41 BME WRH and U6 pin 43 READY The se pins should not be stuck to HIGH or LOW f one or more bits on the AD bus are corrupt the uC often reads the same instructions repeatedly When the uC discovers are invalid OP code it will RESET itself and start from the beginning again The uC sets the RESET input low when it resets itself This can be discovered at the RESET input of U6 pin 16 lf 5 V to U8 is OK this could be the case Microcomputer Kernel Functional Level 4a Set the oscilloscope to 2 V div and 20 us div Run uC Kernel test Test 3 Check all signals on U9 to U13 U16 and U17 The si gnals should not be stuck high or low Use test pin P5 to trigger the oscilloscope see Figure 5 12 R209 to R212 cx E c E E R183 to R190 gt mal R221 to R224 Figure 5 12 Pinning diagram for U9 to U16 NOTE By removing R183 to R190 R209 to R212 and R221 to R224 th
218. tor 2 pF 0 5 2 pF 300V Capacitor 100 nF 1096 63V X7R 1206 Capacitor 1 nF 596 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 22 nF 2096 200V 2F4 1206 o L C HO I LH EA F n J m A RK FI J HAH meu x NG HR H Main Board Part Number 5322 214 91332 5322 502 21489 4822 530 80082 5322 242 73307 5322 242 14372 5322 242 81692 5322 242 81692 5322 242 81694 5322 124 80335 4822 122 33496 4822 122 31746 4822 122 33496 5322 126 10527 A P14 P15 BROWN BLUE SE SUS Replacement Parts Main Board 7 5 Pos C7 C8 C9 C10 C11 C12 C13 C14 C16 C17 C18 C20 C21 C22 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C44 C46 C49 C50 C51 C52 C55 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C68 C69 C71 C75 C76 C77 C78 C79 C80 C82 C87 7 6 Replacement Parts Main Board Description Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 2 pF 0 5 2 pF 300V Capacitor 1 nF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1 nF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 22 nF 20 200V 2F4 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1 nF 5 63V NPO 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 100 nF 10 63V X7R 1206 Capacitor 1
219. tor 33 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Resistor 82 Q 1 1 8 W 100PPM 1206 Resistor 82 2 1 1 8 W 100PPM 1206 Resistor 330 Q 1 1 8 W 100PPM 1206 Resistor 10 0 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 330 Q 1 1 8 W 100PPM 1206 Resistor 560 Q 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 2 20 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 100 kQ 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 39 0 k 3 1 1 8 W 100PPM 1206 Resistor 10 0 kQ 1 1 8 W 100PPM 1206 Resistor 10 0 k2 1 1 8 W 100PPM 1206 Resistor 56 Q 1 1 8 W 100PPM 1206 Resistor 220 0 Q 1 1 8 W 100PPM 1206 Resistor 100 Q 1 1 8 W 100PPM 1206 Resistor 47 Q 1 1 8 W 100PPM 1206 Part Number 5322 116 82263 5322 116 82
220. ts see Figure 4 14 10 20 ns Error pulse 5 2 V Voltage expander Comparatot capacitar Discharged with 1 400 ollaa Expanded output pulse Figure 4 16 The interpolator expands the error pulse 400 times Using the siandard clock freguency as a reference we can measure this new extended pulse length There are two in terpolators one start and one stop interpolator OQ0502 U58 circuit includes the generation of the error pulse and the time expander 000504 U56 holds the measuring lo gic for the expanded pulse The small error pulse is the time from the external trigger event to the second positive clock transition Conseguently the error pulse is between 10 ns and 20 ns long The extended pulse is approximate ly 3 to 7 us see Figure 4 15 Clock 100 ns Ext trig Error pulse Expanded pulse LLLA IPA IPB Figure 4 17 Measuring the expanded pulse in the 0Q0504 and the external counter Very fast events can not be handled by the counter cir cuits Therefor some external interpolator circuits have been added to the interpolator circuits located inside 000502 U58 The counter circuits U39 and U41 are clok ked with 100 MHz when the signals IPA and IPB are pre sent After the counter circuit the signal is fed to OQ0504 U56 to be measured Timing The following timing diagram Figure 4 17 shows a num ber of measurement signals for a frequency measurement of
221. ts or unsolde red leads 9 2 How to Replace Surface Mounted Devices Electrostatic discharge Almost all modern components have extremely thin conductors and metal oxide layers If these layers are exposed to electrostatic dis charge they will break down or perhaps even worse be damaged in a way that inevitably will cause a breakdown later on The Elec tro Static Discharge sensitivity of MOS and CMOS semiconductors have been known quite a while but nowadays bipolar semiconduc tors and even precision resistors are ESD sensitive Consider there fore all components pc boards and sub assemblies as sensitive to electrostatic 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 components ESD sensitive options are packed in conductive containers marked with this symbol Never open the container unless you are at an ESD pro tected work station e 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 e Never touch open connectors Use ESD safe packing materials e Use the packing material only once Keep paper and nonconductive plastics etc away from your workbench These may block the discharge path to ground
222. ull scale nunppamminnn Figure 6 8 Trimmers for the Analog output Set the LF synthesizer to 999 90 Hz 1 Vpp square wave The counter should read 999 9xxxxx Hz Adjust the trimmer FULL SCALE R381 see Figure 6 9 until the output voltage is 4 980 V 3 mV Set the LF synthesizer to 100 0 Hz 1 Vpp square wave The counter should read 100 0xxxxxx Hz Check that the output voltage is 500 mV 5 mV 1 3 GHz HF input PM 9621 2 BU107 P20 Figure 6 11 Test points and trimmers for the 1 3 GHz HF input NOTE Before beginning any adjustments the HF input must have been in operation for at least one minute to let it reach norma operating temperature Setup Connect the counter to the line power Switch on the counter Press PRESET then press ENTER PM 6681 Input C FREQ C Signal 900 25 MHz generator Amplitude 7 5 10 5 mV RMS Table 6 10 1 3 GHz HF input setup Connect the signal generator to the HF input e Adjustment Turn the potentiometer R30 fully counterclockwise See Figure 6 10 Check that the GATE indicator stops blinking Turn R30 slowly clockwise until the GATE indicator starts blinking The input frequency 900 25 MHz will now be displayed 2 GHz HF input PM 9624 Figure 6 10 Test points and trimmers for the 2 7 GHz HF input NOTE Before beginning any adjustments the HF input must have been in operation for at least one minute to let
223. umpers J12 and J15 are set in the correct position When fitting the oscillator make sure that the connector pins fit exactly in the holes in the connector housing EN ho mm w s Figure 3 7 A clip and a screw hold the oven oscilla tors in place Reinstalling the Battery The instrument will lose its stored programs and front panel settings when the battery is replaced if not connected to the jine power WARNING Disposal of lithium batteries requi res special attention Do not expose the batteries to heat or put them under extensi ve pressure These measures may cause the batteries to explode 3 4 PM 9690 or PM 9691 Oven Oscillator Return used batteries to your supplier or to your local Fluke or ganization Exchange Procedure Remove the cover of the counter connect the counter to the line power but keep it swit ched off Lift the metal clip and press the battery towards the front of the counter using a screwdriver Figure 3 8 Location of battery G1 Clean the battery connectors with a cotton swab and al cohol NOTE Do not touch the new battery with your hands to avoid self discharging Insert a new battery between the metal clip and the pla stic holder You will find the ordering number in the Re placements Parts Chapter Disconnect the power cable Reinstall the cover to the counter Don t throw batteries
224. ure 5 28 Component layout GPIB interface Set the oscilloscope to 2 V div and 10 ms div Run the Analog out 1 test Test 10 The u controller generates a pulse width modulated signal with a variable duty cycle This PWW signal is converted by U34 to a sawtooth signal of approximately 20 Hz U77 makes a DC voltage in the range O to 4 98 V of the saw tooth and feeds it to the analog output on the GPIB interfa ce NOTE U34 and U77 are located at the bottom side of the main PCA Trace the signal from U6 pin 39 on the main board to ANA LOG OUT J3 at the rear panel Use P5 on the main board to trigger the oscilloscope Run the ANALOG OUT 2 test Test 11 The analog output now outputs a DC voltage that can be controlled by pressing the UP DOWN keys 0 min value 0 V 255 max value 4 98 V Connect an IBM PC or compatible equipped with a PM 2201 GPIB interface or equivalent and its software to the interface in the counter Insert the floppy disc labeled Test and Calibration pro gram for PM 6681 This test program is included in this Service manual Change to the drive where the test floppy is inserted Type GPIBTEST and press enter to start to program All instructions needed fo run the program are supplied by the program itself NOTE This test program does not test the analog output If you find any fault continue with traditional troubleshoo ting techniques and replace d
225. utput test 2 6 Probe compensation Output location 4 19 Production items 7 2 Protective Ground Checking the connection 5 19 R Rear Panel 4 19 Location of inputs 4 19 Rear Panel Inputs See PM 9611 Recalibration intervals See MIBRC 5 2 Recommended Replacement Parts 7 2 Reference In See External Reference input Reference Oscillator Description 4 14 Reference Oscillators Checking 2 5 Reinstalling the Cover 3 2 Removing the Cover 3 2 Replacing Components in Primary Cir cuts 1 2 Required Test Equipment Calibration Adjustments 6 2 Performance Check 2 2 Repair 5 4 Reset Circuit Description 4 13 4 17 Resolution Checking 2 5 S Safety Components 5 19 Safety Inspection 5 18 to 5 20 Secondary Circuits Power Supply 4 10 Repair 5 6 Self iest 2 2 Sensitivity Adjustment 6 7 Checking 2 4 Signals 8 2 Special Parts 7 2 Standard Oscillator Adjustment 6 3 Calibration 5 3 Checking 2 5 Description 4 14 Repair 22 5 7 Standard Parts 7 2 Step Response Adjustment 6 5 Surface Mounted Devices 9 2 T TCXO See PM 9678B Test After Repair 5 19 to 5 20 Test jum
226. y e Setup DUTY F A Input A B 50 Q AC Manual w jevels Attenuation MX Trigger levels O0 V Measuring time 100 ms Frequency 1 kHz Sinus or triangle Amplitud 500 mV pp before the attenuator Oscilloscope Amplitude 50 mV div 10 1 probe Time 200 us div LF synthesizer Table 6 7 Sensitivity setup Connect the LF synthesizer via an 200B attenuator to input A Check with the oscilloscope that the signal at the input of the counter is clean and real sinus or triangle Adjust the resistor R18 OFFSET A until the counter shows 0 500 0 001 Connect the LF synthesizer via the 20dB attenuator to input B Press SWAP Adjust the resistor R44 OFFSET B until the counter shows 0 500 0 001 Trigger Levels e Sefup FREQ A Input A B TI trigger levels Attenuation Paga Trigger levels 5 V Amplitude 5 0 V 50 mV Table 6 8 Trigger Levels setup e Adjustment e Channel A Connect a stable DC voltage to the A input of the coun ter via a T piece See Figure 6 8 Connect a DMM to the other end of the T piece NOTE Use coaxial cables to avoid signal interferance Input Amplifier 6 7 DC source Coaxial cable Figure 6 9 Connect a stable DC voltage to the A in put of the counter Press AUX MENU Select AU COdES and press ENTER Type 23 1 on the numeric keypad and press ENTER Set the measuring time to 80 ns Press STAT and select MEAN
227. y displaying the result as shown under the Display column in Table 2 9 Selected Display Pass Function Fail FREQA ome mec 73 gt PERA 100752 RATIO AB 19000000 Mill NEG SLOPE B 00000000 A suun o TIMEA B 50000989 PHASEA B 1800r 180 TOT A B MAN E COMA wama ST STOP EH ST STOP Select GOM A Tv TI KE me mf lt Fu POS SLOPE B 0500000 ELE AUTO mr ect SI A ml e MAX MIN Table 2 9 Measuring functions check _ 1 Value depends on the symmetry of the signal 2 Exact value depends on input signal 3 If an C option is installed Check on HOLD OFF function Press PRESET on the fimer counter Select the following settings for the fimer counter Press CHECK Select PERA The counter should show 10 s Select HOLD OFF The counter should show 1 s Set the Hold off time to 500 s The counter should show 500 s The LSD digits may vary Options Check on Prescalers To verify the specification of the HF inputs in the instru ment perform the measurements below e PM 9621 Reauired Test Eauipment Suggested instrument HF signal generator Fluke 6062A Table 2 10 Test eguipment for 1 3 GHz HF input Connect the output of the signal generator to the HF in put of the counter Connect the 10 MHz REFERENCE OUT of the generator to the
228. your local Philips or Fluke organization or rep resentative However many of the standard components can be obtained from other local suppliers Before purcha sing or ordering replacements parts check the parts list for value tolerance rating and description If the value of the physical component differs from what is described in the parts list you should always replace the part with the same value as originally mounted Special Parts In addition to standard electronic componenis the follo wing special components are used Components that are manufactured or selected by Philips to meet specific performance reguirements Components that are important for the safety of the instrument Both type of components may be replaced only by com ponents obtained through your local Philips or Fluke or ganization J 0000000000 7 2 Replacement Parts Introduction co C G C G O NOTE Physical size and shape of a component may affect the performance of the instru particularly at high frequencies ment Always use direct replacements unless it is known that a substitute will not degrade the performance of the instrument The abovementioned parts are Recommended Replace ment Parts and are marked with an R in the column of the parts list Componenets marked with a P in the column are Pro duction items not kept in replacement parts stock These items can be ordered but the delivery

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