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Service Manual -- Fluke -- 867B
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1. 4 VDD re o Ke R4 OPTICAL ANN VEE WAKEUP TRANSMITTER C43 VDD 464K 0 22UF Le R170 OPTICAL T CER BS S CES 49 9K 619P RECEIVER 7 MMBD7000 TP22 ka T 17 3 pTF_SWITCE U MUN2111 LM35807 7 e e lala vss Ke e e e e e e 8 R156 e 5 qr Kid rene ZC C78 cso c81 c83 C75 c39 c82 ER 0 1UF 0 1UF 0 1uF T O iur T 0 1uF T 0 iuF T 0 1uF e 25V 25V 25V 25V 25V 25V 25V V K_O i V CER CER CER CER CER CER CER _CR23 yw PEAK_OFF PEAK ON MEMBRANE e e e e e SFH409 2 CONNECTOR P2 R168 e 6 04K vec CER S L 034 5 9 5 9 VES MUN2211 P2 e 3 e x P2 V V e s E TP14 P2 O ge P2 R172 e mu TP12 P2 7 68K A vec P Le isg V TOUCHHOLD A 56 de P2 11 MIN MAX e 5 P2 10 DISPLAY ww ET e P2 SOFTKEY3 PWR RESET d P2 R34 J wlal m MU P2 9 76K e ajalals SE P2 Poo S te Male Vma BATT LVL 14 4 14 14 14 14 12 14 22 e E 2 x R TO 50 BEER EE CER T 224 SWVOLTAGE 9 We Le lo s lo QA P2 6 SOFTKEY4 th kk CREME ZSS prian ZZZ ZZZ 525 5 20 T NMT DRFA i P7 o ano ES S aa a kd Za e R163 e 9 1 dq dede ZE avss 82 STET BT 9 STE S P2 13 0K adds SAA RIC_CLK po P1_0 R p R
2. AC_AV PLACE U1 OVER DGND PLANE e C35 c32 390PF 5 CER CER 5 Aut m 25v DAC UF T MMBD7000 de 1 LS1 P vpn POWER SUPPLY S BIGZ z3 2 34KHZ VAC OVERLOAD RESPONSE 16 E U1 5 4 99K 3 3UF 22 2K TK R107 NEEDS TO BE TESTED MP7633 TOUTI Zeg a MW So is JL m CR11 22 1 c29 van 4 DC DECOHB U ine ai i C108 9 MMBD7000 VR4 ES c7 I 5233 E 100UF c101 B c2 10v 0 1uF a R155 e 20 25v 6MIL a 47 a Ev sep VS RIC_VCC C28 V m FAST REF VRS 0 1UF _c73 5233 25v 100 m e T i a g T AA e U 0 1UF 22 1 n CER R91 VAC 25v 1 50MEG vs V CERM 2w VAC m AC R108 SC U16 1 50MEG V ACR6 10 a dei AHC4053 100K EXT_TRIG LF_REJ_TRIG AC CURRENT 15 1 Ta 2 LUF 5 Ve e 1c30 EN 19 6K HN VER GND R31 8 CER UA MA Ji 6 49x R82 Ts 4 L9 HV F2 440MA 65MIL 7 v TRIG c109 nee R150 Su 200 ig 10027 775102 R102 65MIL 65MIL 100 S 09 07 TRIG_HOLDOFF CER a 10 0K m N266560 upses60 ENT dd SER KL g 33MIL RST ma e CR4 RMSI MMBD7000 08 ms MPS6560 560 R25 ACTIVE RTUTER nue R49 10 0K gt 5 100 X MEA ER 200k MF VSS VAC 74HC4053 S1 21176 1 8W AC BV 16 5 a 3 100K 258 33MIL U16 vee e vt R148 y ml 8 z
3. FLUKE 86X 4001 Sheet 2 of 2 os31_2f eps Figure 5 2 A1 Main PCA cont 5 16 6 1 Chapter 6 Schematic Diagrams Title Page Al Main PCA Assembly 6 1 NOTES UNLESS OTHERWISE INDICATED 1 RESISTORS ARE IN OHMS 0805 SM CERMET 1 0 100W REFERENCE DESIGNATION 2 NON POLAR CAPACTTORS ARE POLYESTER 10 50V LAST USED NOT USED 3 POLARIZED CAPACITORS ARE TANTALUM 10 35V Gage 4 XR8 IS NOT INSTALLED I CR 26 5 R74 CR9 R113 022 R55 R100 02 01 06 03 d CR15 011 U32 R44 C84 R68 C91 R141 VRI gt R15 R28 C21 R11 R106 R16 Q5 Q21 AND CR12 ARE NOT LOADED ON THE 863 E T L 6 X86 IS NOT INSTALLED LS 1 M 4 MP 4 9 2U28 IS NOT INSTALLED P 3 Q 34 029 172 ea 10 gt R16 IS 2 OHMS ON THE 8673 AND 10 OHMS ON THE 867 aj eee RV 3 11 gt R158 IS ONLY USED ON THE 867B s 2 T 1 TP 31 U 34 UT 29 VR 5 WP 1 A 1 z 6 POWER SUPPLIES VDD 5 2V 5 vss 5 2V 5 vcc 3 27V 2 VAD 3 27V 2 VEE 20V SYSTEM GROUNDS GND INPUT SIDE OF CURRENT SHUNT AGND SIGNAL CONNECTION TO INPUT SIDE OF SHUNT WITH NO CURRENT FLOW GND1 OUIET ANALOG GROUND RETURN TO POWER SUPPLY COMMON GND3 FILTER RETURNS FRO
4. MAKE THIS VSS CONNECTION AS CLOSE TO PIN 40 OF RIC AS POSSIBLE MAKE CONNECTIONS ON OTHER SIDE OF CAPACITORS AS CLOSE TO RIC AS POSSIBLE FLUKE 867 1001 Sheet 2 of 5 Figure 6 1 A1 Main PCA cont Schematic Diagrams VAC VAC N N U17 GET rg AC_PATH C50 22PF C41 22PF 74804053 gp CER CER eee 16 AC 0 1UF R71 0 001 vee 25V li c25 d 10 0K 1 000K GAIN 1 1 000K i ta rk Al ve e o BR AWA e e AM v gt anren 5 7 s Li sa 1 5MM zi zi 0 47UF xt 6 T 0 1ur 6MIL rm LS 2 LOGON 2538 GND ver cig x1 1 e 3 4 fos 1 000K GAIN 10 1 00MEG R d e a GAIN 0 1 AW e 0 1UF 1 SNM 1 5MM zi VAC yac 25V
5. 042 Zu Ex ga 3 40 985 EN ai L dz ju dE yn 970 o aj E 2 eat 20 FLUKE 86X 4001 Sheet 1 of 2 ps os31_1f e Figure 5 2 A1 Main PCA 5 15 867B 863 Service Manual 10 Gi R151 R59 R170 R150 48 C64 R166 R168 R31 C28 R83 eo 29 RTA9 GS R25 19 El Hb R98 R96 R47 19 R76 R95
6. 2 14 POR WM M E e TET 2 14 DG Volts eit ois ai edie e ere eden Hee dts 2 16 InW DG ossi a e ee Eege 2 16 ONS see teer tre ete ree e tre eee dk 2 17 Diode Test inen ee i n 2 17 CapacitanCe i tese dee eedem rere redeo ee Pekin 2 17 MAMA hr tU P rm petto ede pe ed bon Pe E es EHE ayy 2 18 AT sert Mr Are ire t pee ais eter eere 2 18 Waveform Processing oceniane ai a ae irea Ta ret 2 19 dau CUN 2 19 Detailed Description ied reperto preter AA 2 19 2 1 867B 863 Service Manual 2 2 Waveform Trig ering dng ti m tee et erede siii 2 20 OVERVIEW M 2 20 Dual RT noise toti s ier a Eee a 2 20 Single TEIgget ii eo cti A tete ee Tete 2 2 External Trigger zin ier Hr i su s ka s 2 21 Glitch Capt re oe enter cete ene ne accent sd eh 2 22 Single oy ee e e to detener ra 2 22 Frequency Tia ia ss ere At dre 2 22 Logic Activity Trigger ieies er E ENA E R 2 22 Peak Hold esce eere eb redet dette ide 2 22 Auto Se a kas kan po 2 22 Component Test est ve rere in ae e EE te ete este a 2 23 Digital Circuitry sastatos kaiti als tn nr Peg sk es 2 24 RS 232 Serial e te tr e tie ten rere e ees 2 24 Theory of Operation 2 Introduction Introduction 2 1 This chapter describes the functional blocks shown in Figure 2 1 Overall descriptions are broken down into Power Supply Analog Circuitry and Digital Circuitry For all measurements inputs e g VO V and COM are applied through overvoltage
7. 6 1 iii List of Tables Title Page POWet SOUFCeSi ieee tice te aged ld de ree de a wed cents 1 4 Accessories Included with Each GMM ss 1 4 Power Supply Inp ts ed RE otok staves at ent tt elle As 2 4 Power Supply Signals ss 2 7 Power Source Detection sise 2 9 Average Converters a aiva ois o cei een eA RER EAN Ite eet de et Dep ist 2 15 RMS Converter UZ coctel tbe code te RT ea es hoe a ARZ an te eV TS 2 16 Test Point Va Kass 2 16 Ohms Ratiometric Measurements esses ener enn 2 17 Amps Measurement Paths us 2 18 Recommended Test Equipment 4 4 nV DC Performance Test is endete dog tee enger rrt epe re ee SE 4 4 DC Volts Performance Test 4 6 Diode Test Performance Test 4 7 AC Volts RMS Performance Test 4 8 AC Volts Average Performance Test 4 8 Ohms Performance Test 4 10 Conductance Performance Test 4 10 Capacitance Performance Test 4 11 Frequency AC Volts Performance Test 4 12 Frequency mAuA Performance Test 4 12 Duty Cycle Performance Test 4 14 Logic Performance Test ah oe tette dire KA caes heo s Ede age ated can i 4 15 DC Amps Performance Test 4 16 AC Amps RMS Performance Test 4 16 AC Amps Average Performance Test 4 17 Peak Hold Performance Test 4 19 Component Test Performance Test 4 19 Rel Performance Test 4 20 Touch Hold Performance Test 4 20 Glitch Capture Performance Test
8. Ey _HZ save ARE UP PRINT OUTPUT SENSE VOA 0 m i CURRENT A m in EXTTRIG COM VOS os16f eps Figure 4 4 Configuration 5 Ohms Capacitance Test 4 10 Rotate the GMM selector to Diode Capacitance Test 3 Connect the GMM VN and COM inputs to the GenRad 1412BC Then perform the test steps in Table 4 9 Table 4 9 Capacitance Performance Test 0 950 uF GenRad 1412 BC 0 930 0 970 867B 863 Service Manual Frequency Test 4 11 Rotate the GMM selector to SET UP and check that the Trigger selection is set to Single To change to Single press Next Item to highlight the appropriate selection line then press or to make the selection Complete the change by pressing Save Set Up Rotate the GMM selector to AC Volts If necessary press to select highlight Average Press Connect the GMM and the PM5139 in Configuration 7 Figure 4 5 Then perform the steps called for in Table 4 10 Before proceeding to the next test place the PM5139 in Standby Table 4 10 Frequency AC Volts Performance Test 3 00 Hz 0 060V rms sine 170 mV p p PM 5139 500 00 kHz 0 125V p p sine PM 5139 499 74 500 26 800 00 kHz 0 21V p p square PM 5139 799 59 800 41 1 5000 MHz 2 1V p p sine PM 5139 1 4991 1 5009 Next rotate the selector to z Model 867B only If necessary press to select AC Connect the 5700A to the mA uA and COM GMM inputs If necessar
9. os8f eps Figure 4 11 Initiating Calibration Now refer to Figure 4 12 Warm up time is 10 minutes appears on the display when Step 1 is selected After 10 minutes or whenever you proceed to Step 2 this 4 22 Perfomance Testing and Calibration 4 Calibration message disappears and will only appear again if the calibration procedure is started over On the GMM softkeys 1 2 ls 5 select menu items shown in the boxes displayed at the bottom of the LCD For example press to Proceed in the following set of softkeys Abort Proceed Cal GJ kj kj LJ 6 You can stop the calibration procedure at any time by pressing Abort Cal If the calibration is stopped all previous calibration constants will be restored when power is cycled off and back on Note Calibration constants are stored permanently only when you press li Save Cal after the last calibration step If you press s 7 Abort Cal at any time prior to this the GMM immediately returns to normal operation and no new calibration constants are retained Warm up time is 18 minutes Step 1 Ers DCH Move the rotary switch to mvDC Use input jacks Y and Com Apply 4 9648 VOC Press Proceed when ready Combo e 1000m i E iset Led Abort Proceed i voltage Cal os9s eps Figure 4 12 Entering Calibration Mode mV DC Calibration 4 23 1 On the GMM check that the selector is set to HZ mV DC 2
10. AC Volts measurements are connected at the VO and COM inputs Input protection is provided by R103 and RTI for all ranges Relay K1 connects C31 to the 1 111 MO 2 14 Theory of Operation 2 Input Signal Conditioning resistor of Z1 which is connected to a virtual ground created by U6 C31 blocks DC voltages CR3 clamps any over voltages to a safe level for U18 The signal is returned through Ground 3 to TP6 Ground 5 U26 L8 the low leg of R109 and then to the COM input The following three amplifier stages condition the ac signal for the average and rms converters the Fast A D Converter and the frequency comparators e The first amplifier stage 1 uses op amp U6 in an inverting configuration The 1 111 MQ resistor of Z1 is the input The 111 1 kQ 0 1 gain and 1 111 kQ 0 001 gain resistors of Z1 are feedback resistors selected by U18 switches TP25 is the first stage output e The second amplifier stage 2 uses op amp US in an inverting configuration TP25 is the second stage input U17 selects resistors of Z1 for a gain 1 or 10 TP23 is the second stage output From TP23 the signal goes through an RC network C25 R53 and R104 with a gain of either 1 all ranges except 1000V or 0 1 1000V range The gain is selected by U17 e The third amplifier stage 3 uses op amp U8 in a non inverting configuration U17 4 is the third stage input The 3 30 kQ and 1 18 kQ resistors of Z3 provide two output gains The output to the rms
11. 4 2 External Trigger Performance Test 4 2 860 Series Final Assembly eee 5 5 Ad Main PCA cese dein vasas iris eset Nee vel trial 5 8 List of Figures Figure Title Page 1 1 Temperature and Humidity nacon oran o ese vaer 1 7 2 1 Block Diarias nt th oe ec ae te eae Y ra 2 5 2 2 Power Supply Blocks RG EK sok dok dob nennen enne nennen nennen nnne nennen 2 11 2 3 Keypad Connections 2 25 3 1 IST S nbl 3 5 3 2 Reassembl lees tetas oie eo ee er m i sa HN eee t in isti 3 8 3 3 Replacing the 400 mA Fuse ss 3 9 4 1 Configuration 1 mV DC 4 5 4 2 Configuration 2 DC Volts 4 6 4 3 Configuration 6 AC Volts 4 9 4 4 Configuration 5 Ohms sise 4 11 4 5 Configuration 7 PM5139 iii 4 13 4 6 Configuration 7 PM5139 iii 4 14 4 7 Configuration 9 PM5139 ie 4 16 4 8 Configuration 3 mAuA DC and AC 4 17 4 9 Configuration 4 Amps DC and AC 4 18 4 10 Configuration 8 Component Test 4 19 4 11 Initiat rig Calibration rne eere nte eger m d sea it 4 22 4 12 Entering Calibration Mode 4 23 4 13 Modifying the Displayed Value sss 4 25 4 14 Ohms Calibration ss 4 26 5 1 860 Series Final Assembly 5 7 O EE AA idea ne er A ehe ande eios 5 16 Ri Ke Aa A A A ke ke so ALON OY E pas Chapter 1 Introduction and Specifications Title Page Introduction ie pa e treu rte o set met ne ep HRS 1 3 Deepen e ec te Dr e RR tenen 1 3 P
12. Cleaning 3 4 Warning To avoid electrical shock or damage to the GMM never allow water inside the case To avoid damaging the GMM s housing never apply solvents Wipe the GMM with a cloth that is lightly dampened with water or a mild detergent Do not use aromatic hydrocarbons chlorinated solvents or methanol based fluids when you wipe the GMM Disassembly 3 5 Refer to Figure 3 1 throughout this procedure 1 Set the GMM selector to OFF Be sure to leave the selector in this position throughout the disassembly and reassembly procedure Note that you do not need to remove the bail and battery pack to disassemble the GMM Note The low energy fuse 440 mA can be replaced by removing the battery pack only 2 Remove the six torqued screws attaching the case halves Detach the case halves Remove the two screws securing the shield Then pry the shield loose from two stanchions at the top of the circuit board 4 Gently pull up on the shield tab and rotate the entire shield away from the circuit board Remove the three screws securing the circuit board to the front half of the GMM 6 Dislodge the circuit board by pushing in on the Volts Ohms input connector from the lower right front of the GMM See Detail A 7 Lift the entire circuit board up approximately one inch dislodging the slotted Battery Eliminator connection Detail B 8 Rotate the circuit board 180 degrees Maintenance Disassembly 3 86
13. Ji Tor x c49 U25 One rs C E 015 EH i l c26 e L19 5 xu19 lg euo 5 D 5 cat I via o 1 NY e CR2 o rm 2 u Ds Spe pes S era zu ne 022 s gc i RD ak Ls CR ce ue LDz B 2 e 2 x gl S us RE Ue 5 tg DR og E a og az A D gt ES Ss CS 80 030 Z a z A SN H uen U D ud E s E E 16 Su 08 08 E og X8T101 3 d 0 13 su us E E 3 Te 20 ng H IE e 2 ae D E a S gist _ Tose Z 5 IE LE DUS cite Z zi 20 08 rg oe ue D SU US U26 j ES gr ogo D3 e Eo ses Y XBT102 333 EN EI m E Dg 2 E E XBT103 2 E E e Os E eee 1 CRE PER o E 2 LUR logos FRR RTE lega LE eR lo 10 2 amw 8 FEE 30 8 g AE LR on 8 n m SD Of DS 4 VEL iy ER Ete 2A DE SE Ess Og GE 2 E eere re ra se le EEEE 2 Se r STE E 3 E I 7 Bottom Ckt 1 Assembly FLUKE 86X 4001 Figure 6 1 A1 Main PCA 6 3 867B 863 Service Manual
14. Parts Table 5 1 860 Series Final Assembly Reference Designator A1 863 MAIN PCA 103629 1 A1 867B MAIN PCA 616570 1 BT1 BATTERY PACK ASSY 938170 1 1 BT2 7 BATTERY 1 5 AA ALKALINE 376756 6 2 E1 CONTACT PTF 822676 1 F2 FUSE 406x1 375 0 440A 1000V FAST 943121 d H2 SCREW PH P THD FORM STL 2 14 375 821140 1 H3 5 SCREW THD FORM PH P STL 2 32 750 944475 3 H6 SCREW PH P THD FORM STL 5 14 750 832246 6 H12 SCREW PH P EXT SEMS STL 4 40 250 107430 2 MP1 863 CASE TOP ASSEMBLY PAD TRANSFER 949081 1 MP1 867B CASE TOP ASSEMBLY PAD TRANSFER 949086 1 MP2 863 MASK LCM PAD TRANSFER 948844 1 MP2 867B MASK LCM PAD TRANSFER 615358 1 MP3 863 LCDMODULE 240X200 GRAPH TRNSFLECTIVE 928168 1 MP3 867B LCDMODULE 240X200 GRAPH TRNSMISSIVE 602430 1 MP4 CASE BOTTOM 948575 1 MP5 SHORTING BAR BATTERY 948687 1 MP7 BAIL 948591 1 MP8 LABEL ADHES MYLAR 1 50 312 943407 1 MP9 LABEL CALIBRATION 948674 1 MP10 TEST LEAD ASSY TL70A 855820 1 MP11 SUPPORT INTERNAL 948625 1 MP12 ADAPTER SHAFT 948604 1 MP13 SHIELD MAIN 948661 1 MP14 DOOR ACCESS 948620 1 MP20 DC POWER JACK ASSY 948745 1 MP21 TUBE CALIBRATION 948864 1 MP23 FASTENER ACCESS DOOR 948609 2 MP40 SEAL FUSE ACCESS 948935 1 MP41 CONTACT BATTERY AA 948690 2 P2 CONN ELASTOMERIC KEYPAD TO PWB 1 350L 942805 1 PS2 PWR SUP 3 6W 12V 300MA CHRGR CNV USA 942599 1 3 PS3 PWR SUP 3 6W 12V 300MA CHRGR CNV EUR 942602 1 4 PS4 PWR SUP 3 6W 12V 300MA CHRGR CNV JAP 942610 1 5 PS5 PWR SUP 3 6W 12V 300MA CHRGR CNV A
15. and overcurrent protection circuits switched to an appropriate range and branched into two signal paths One path leads first to a Fast A D Converter 8 bit 4 8 MHz sample rate that digitizes the data then to a digital gate array that stores and processes the data The other path leads to a Slow A D Converter high accuracy dual slope in the U30 custom IC The microprocessor takes data from both the Slow A D Converter U30 and the custom digital IC U24 storage to simultaneously display a waveform and a 4 1 2 digit meter reading Power supplies include 5 2V dc and 5 2V dc for analog circuitry 3 3V dc for digital circuits and VEE nominally 23V dc for the LCD module Start Up Sequence 2 2 The GMM sequences through the following steps when power is applied e The 3 3V power supply comes up e The reset pin on the microprocessor U25 1 goes high e The microprocessor U25 begins executing the program stored in EEPROMs U11 and U19 e LCD controller U13 data is initialized e VEE is turned on 20V dc and the display comes on Function Selection 2 3 When the selector is turned to a new function a rotary switch wiper sets up a resistor divider by grounding the selected resistor in series with R170 The resulting voltage is read by the microprocessor U25 83 2 3 867B 863 Service Manual Power Supply 2 4 The GMM can be powered with a Fluke BP7217 rechargeable battery pack 6 4 3A NiCd cells 6 AA alkaline bat
16. 1 0 1W 100PPM 0805 RES CERM 150 1 0 1W 100PPM 0805 RES CERM 475 1 0 1W 100PPM 0805 RES CERM 4 99K 1 0 1W 100PPM 0805 RES CERM 10K 1 0 1W 100PPM 0805 RES CERM 18 7K 1 0 1W 100PPM 0805 RES CERM 3 24K 1 0 1W 100PPM 080 RES CERM 140K 1 0 1W 100PPM 0805 948729 948737 948682 945001 944579 930052 930052 930052 942818 942818 821637 820910 930011 930016 912469 942511 930268 930045 930052 942540 928713 928713 928713 928796 928903 930086 943642 943642 943642 928767 928767 928791 928791 928791 928791 928791 928791 928791 928791 930180 930102 930102 942578 Table 5 2 A1 Main PCA cont List of Replaceable Parts Parts Reference Fluke Stock R14 R53 R56 R68 R126 R139 R15 R18 R27 29 R57 R63 R78 R130 R13 R138 R141 143 R16 R20 R99 R21 R23 R26 R83 R107 R30 R67 R80 R82 R95 R98 R31 R55 R33 R90 R156 R34 R37 R38 R40 R41 R43 R42 R44 R45 R54 R66 R79 R88 R93 R110 R145 R154 R155 R157 R160 R47 R48 R52 R60 R62 R125 R49 R50 R51 R85 R112 R59 R64 R70 R65 R69 R74 R123 R75 RES CERM 1M 1 0 1W 200PPM 0805 RES CERM 100K 1 0 1W 100PPM 0805 RES CERM 0 2 5 0 1W 100PPM 0805 RES CERM 100K 5 3W RES CERM 78 7K 1 0 1W 100PPM 0805 RES CERM 22 1 1 0 1W 100PPM 0805 RES CERM 200K 1 0 1W 100PPM 0805 RES CERM 6 49K 1 0 1W 100PPM 0805 RES CERM 10K 1 0 1W 100PPM 0805
17. 19 200 AMN v E E G R151 100 ER m d R42 TO R109 NEEDS TO nin 9 MN 3 10 01K E 0 033UF PP BE A LOW RESISTANCE 1 4 CR13 100 2 75 CONNECTION 2 5w 65MIL GFLB AC z5 vun WW vac 74HC4053 bs d Y ls R96 VR3 u16 1 00M AW En FL 261MIL K ra vec 3 1 00M Z 16 9 1N4578 13 Zz 3A 10A uv Ma y 65MIL a Iv z5 1 IN 2 CRI kt u R47 261MIL R109 SOPIV S Le z 0 01 TNE 5 pam S lw 101 01K N N 8 1 261MIL surt L8 25 COMMON it VAC 9 75 V 6MIL 1 5MM SOMS DE e o s1 luvs ese uzen AC_PATH 9 KF RED TFNMET VOLTS OHMS gan R103 RTL OHMS MV DT CT srcyurT 2 LE 9 Ji 10 EMIL SSR 6MIL HV J SN R20 Ge 5 FT Amt 6 ANN 160 1 5MM m EN WW 5W 5 NIZ CERM ong Bee ie 3v 1 1K RV1 3w 5 Same 1 10 0M 1000v 910v ke Ati d T 47PF 82 saton 6MIL 5 CER RAR ES HV RV3 1 47K 100K 6MIL 1 5MM e CERN 6MIL TP15 gt RV2 L 910v La Kee c36 ITKVRRTRR R75 100PF 07 U26 Deci 6KV news _10 R S19942DY CERM CER 110 9 FERRITE PICA 70 e R105 o o 9 V cts C112 a c CE a H U26 EXT_TRIG e B de d S19942DY R90 G a ri x L C100 AN e mm F N El T 180PF 10 0K a CER Tc119 Zeus CR26 5 d RE T 0008 lor HEE MMBD7000 CER CER 20V CER V e e e de vss TESTPOINTS ARE 40 MIL SQUARE
18. 6MIL BI 913 e ERR 1000v S VA c awit VAC VAC Li TAHCEUSS VAC O59 ac R104 23 ii 74HC4053 i VAC z 110K o e w _ U18 i 16 AC el 3 zi 16 74HC4053 Y nook 1 111M AC vec di vec 23 ES S X ACR3 IT 3 13 1 18 A M 3 ug 7 ly 13 5 REJ_TRIG 2 e x 6 3 8 m V TNH TNH US 00K VAC GR e GND GND VER 4 MC34080D A Lo a ep 7 u Lcs8 TOR VAC Tee 6B7F CR3 AC ACR2 IR 7 VAC VAC MMBD7000 Iv 13 zi VAC i Ta 12 a V Gr ku 111 1K VAC CER 6 TNH U18 ves own 74HC4053 7 8 AC AC CURRENT VAC AC AVE TP21 e r Kes 4 VAC AD VDD d L6 PLACE U10 OVER I 2 p I iu Ky E van Qs 600 POWER AND l U3 RMS CONVERTER VERRE GROUND ISLAND BUFFER cii 1UF 1 AD637JR 25v CER ef 16 C66 7 1 l R160 c 7 a ADDATA lt 7 gt C69 C68 0 1UF 0 1UF AC_OFF 4 vs y 17 CI 4 1UF EH ARSOLUTE LS yuh 25V 25V c 3 MC34081D LY O Qr 1 VALUR LU CER CER d 6 70 20v 15 10 Be ADDATA lt 6 gt 3 Y eure GUF 2 o 014 FERRITE MP87L75 EM BIAS 13 5 3V 6 3V as 1 213 0 1UF e e SxCT ON SQUARHR 1 6 I BOB R93 4 DIV DRR a c14 0 1UF e I 25v CER u10 5 ADDATA lt 5 gt e e vac oe 34 3 _ XY B RMS INC Kee ER 25V CER a WW Ld 16 vw DEA R88 k lt ius 5 at 10 l nns ADDATA lt 4 gt 6 R30 sige 78 7K 22 1 6 1 ate es 2 47 at S t DRA R79 14 200K L2 c99 as pes 2 ADDATA lt 3 gt C6 d VAC R86 ADCLK PT 150PF 13 7 Ea i5 7 10 2 2UF R e e CL 500 115 Zuang pe i 20 23 c26 50v vac DRI R66 F C26 133K FERRITE CER T 2 5 6 3V 1 6
19. A D Converter 3 84 MHz for the U30 IC and 6 4 MHz for the LCD controller e Clocks Fast A D Converter data into high speed RAM in U24 e Detects the minimum and maximum readings over a scan e Uses frequency counters to determine frequency pulse width duty cycle and period e Outputs threshold signals DAC1 and DAC2 Two pulse width modulated signals are output by the DIC and when RC filtered become the DAC1 and DAC2 signals used for thresholds Component Test also uses U24 to generate a sine wave at different frequencies Display hardware includes an LCD controller U13 a Display RAM U21 32k x8 and an LCD Module which incorporates row and column drivers The display controller and system RAM are on the upper 8 bits of data bus D8 D15 RS 232 Serial Port 2 50 Communications with an external computer or printer is accomplished through an isolated RS 232 channel Microprocessor serial port 2 U25 95 and U25 96 provides an amplified signal to a photo diode CR23 for transmission A photo transistor Q31 is used for reception Theory of Operation RS 232 Serial Port SO SOFTKEYA o TT A S1 SOFTKEY2 o Ta S2 SOFTKEY3 o Ta S3 SOFTKEYA a S4 SOFTKEYS e A S5 DISPLAY 9 a S6 TOUCHHOLD 0 a S7 SAVE PRINT o a S8 MINIMAX o a S9 RANGE o S10 HERTZ e A 11 CAL ey K 12 BACK_WAKE pi a
20. Check for the PASS FAIL indications shown in Table 4 22 Table 4 22 External Trigger Performance Test 2 0V p p 100 kHz Pulse 50 duty PM5139 to the GMM EXT TRIG input No Trigger 4 21 867B 863 Service Manual Calibration 4 20 The calibration procedure involves 40 steps all of which must be completed for calibration to take effect Each step as identified on the GMM screen is also shown in bold in this manual For example Step 1 as seen on the screen appears as Step 1 in text Measuring the System Resistance 4 21 Ohms calibration requires that you first measure the system resistance Use the following procedure 1 Rotate the GMM selector to Ohms 2 Short the test lead ends together 3 Record the reading system resistance shown on the GMM This data will be used during the ohms calibration procedure Starting Calibration Mode on the GMM 4 22 Connect the Battery Eliminator to the GMM to ensure stable power during calibration Rotate the selector to HZ mV DC and allow for GMM warm up of at least 10 minutes In all cases allow the Calibrator and the GMM to settle before starting the actual calibration Place the GMM in calibration mode by pressing the calibration button This button is recessed in a hole on the right side of the GMM a calibration sticker usually covers this hole and must be broken to gain access Use a thin blunt tool to press the calibration button See Figure 4 11
21. Ensure that the calibrator is in standby mode before making any connection between the calibrator and the GMM Dangerous voltages may be present on the leads and connectors Alternative Test Equipment Fluke 5500A 4 3 The Fluke 5500A can also be used as the source where a calibrator is called for in performance testing and calibration Some performance test points change when a 5500A is used these changes are noted in the following tables e Table 4 5 AC Volts RMS Performance Test e Table 4 15 AC Amps RMS Performance Test e Table 4 16 AC Amps Average Performance Test In ohms calibration the 5500A can provide the values called for by the GMM no value modification is necessary For a general discussion of calibrator use and accuracy refer to Guardbanding with Confidence by David Deaver This publication is available from the Fluke Corporation Everett WA and is published in the 1994 NCSL National Conference of Standard Laboratories Workshop and Symposium Proceedings pages 383 394 4 3 867B 863 Service Manual Table 4 1 Recommended Test Equipment TE Equipment Description ee Fluke 5700A Calibrator The 5700A cannot be used to calibrate the 300Q range ACV DCV ACA DCA Ohms which must be calibrated at near full scale ele Fluke 5725A Amplifier ACA DCA PM5139 Function Generator Frequency Duty Cycle Logic Glitch Capture External Trigger Decade Capacitor GenRad 1412 BC Capacitance Capacitance 0 1000
22. Fast A D Converter for digitizing Data from the Fast A D Converter is then written into the digital ASIC The microprocessor controls the movement of this data to the display controller and the LCD display Detailed Description 2 36 The AC and DC components of the input signal are recombined at U9 3 U9 is configured as a bandpass filter with a center frequency of 2 Hz the crossover frequency for the AC and DC signals Since the bandpass filter adds gain to the path at this frequency the frequency response of the overall circuit is improved An inductor formed by C27 C95 C51 R76 R85 and the gyrator op amp located in U30 R86 and C67 make up the feedback network for the bandpass filter The following two analog switches allow for control of the signal flow e The first switch U14 1 U14 2 U14 10 and U14 15 interrupts the AC signal e The second switch U14 6 U14 11 U14 12 and U14 13 removes the inductor the gyrator circuit from the feedback of U9 For the DC path the input signal conditioning circuitry scales the DC input to match the gain factor used by the Slow A D Converter The Slow A D Converter uses one of three gain factors as required by the selected function and range As a result a 30 mV 300 mV or 3V full scale signal is provided to the Slow A D Converter The AC path is scaled to output 300 mV full scale for all inputs For proper recombination with the AC signal the DC signal provided to the Slow A
23. PPM SOT23 930065 U32 IC CMOS 14 STAGE BINARY COUNTER SOIC 831081 U33 IC CMOS DUAL D F F EDG TRG SOIC 782995 U34 IC CMOS GUAD 2 IN NAND W SCHMT SOIC 837245 VR1 ZENER UNCOMP 5 1V 5 20MA 0 2W SOT 23 837179 VR2 ZENER UNCOMP 10V 5 20MA 0 2W SOT 2 783704 VR3 ZENER TESTED 857201 VR4 VR5 ZENER UNCOMP 6 0V 5 20MA 0 2W SOT 23 837161 WP1 WP2 SPACER BROACH 219 RND STL 4 40 125 944702 XBT101 103 CONTACT PCA 948638 XF101 XF102 600 VOLT FUSE CONTACT 707190 XF201 XF202 CLIP FUSE ANGLED 948695 5 13 867B 863 Service Manual Table 5 2 A1 Main PCA cont Reference Fluke Stock CRYSTAL 19 2MHZ 50PPM SURFACE MT 930024 RNET CERM SIP HI V AMP GAIN 926709 RES CERM SOIC 14 PIN 13 RES 30K 2 930003 RES MF SOIC 14 PIN 7 RES CUSTOM 943480 RNET MF POLY SIP ATO D CONV 926865 RNET MF POLY SIP HI V DIVIDER 926857 RES MF SOIC 16 PIN 6 RES CUSTOM 943477 863 Qty 4 C7 C10 C21 C119 867B only 863 Qty 10 CR2 7 CR16 CR17 CR26 863 Qty 6 Q5 Q12 Q13 Q32 34 863 Qty 5 R14 R53 R56 R126 R139 863 Qty 11 R18 R27 R29 R57 R63 R 78 R139 R137 R138 R142 R143 863 Qty 1 R31 863 Oty 1 R123 5 14 5 List of Replaceable Parts Parts DAN yo l TEO 287 920 G20 p t pau 920
24. RES CERM 9 76K 1 0 1W 100PPM 0805 RES CERM 61 9K 1 0 1W 100PPM 080 RES CERM 1K 1 0 1W 100PPM 0805 RES CERM 1 47K 1 0 1W 100PPM 0805 RES CERM 221K 1 0 1W 100PPM 0805 RES WW 1 5 2 5W 15PPM RES CERM 464K 1 0 1W 100PPM 0805 RES CERM 47 5 0625W 200PPM 0603 RES CERM 845 1 0 1W 100PPM 0805 RES CERM 0 05 MAX 125W 1206 RES MF 100 1 0 125W 25PPM RES CERM 316K 1 0 1W 100PPM 0805 RES CERM 30 9K 1 0 1W 100PPM 080 RES CERM 499K 1 0 1W 100PPM 0805 RES CERM 30 9K 1 0 1W 100PPM 0805 RES CERM 475 1 0 1W 100PPM 0805 RES CERM 6 34K 1 0 1W 100PPM 0805 RES CERM 1 82K 1 0 1W 100PPM 0805 RES CERM 1M 1 2W 100PPM 928945 928945 928945 928866 928866 928866 928866 928866 944439 820811 930222 928932 928932 928882 928882 930115 928791 928791 930128 928861 928713 943613 928890 944363 928903 927707 927707 927707 927707 927707 929039 810747 810747 460527 930198 928838 928838 944285 928838 943642 928775 930172 876177 5 5 11 867B 863 Service Manual Table 5 2 A1 Main PCA cont Reference Fluke Stock RES CERM 4 75M 1 0 1W 400PPM 0805 928994 R77 RES CERM 100 1 0 1W 100PPM 0805 928937 R81 RES CERM 31 6K 1 0 1W 100PPM 0805 928841 R84 RES CERM 20K 1 0 1W 100PPM 0805 928820 R86 RES CERM 133K 1 0 1W 100PPM 0805 928874 R87 RES CERM 0 05 MAX 125W 1206 810747 R89 RES CERM 10 7K 1 0 1W 100PPM 0805 930037 R91 RES C
25. aea as as s RR na Me RE Ne Reh kasi 2 22 2 43 Md ss S ne de ete ne e 2 22 2 44 Frequency Trigger iris RSR Se AE dns 2 22 2 45 Logic Activity Trigger ss 2 22 2 46 Peak Hold octal adas 2 22 247 Auto DIode Gest gl IRA S AS a ee 2 22 2 48 Component Test ak m KRIVO DVA ERE NEAR OE Res 2 23 2 40 DA tea e ee 2 24 2550 RS5232 Serial Port siii iio id 2 24 Mn A O 3 1 3 1 InffoduchOn A Ee e EE Et 3 3 3 2 Warranty Repairs and Shipping Information sse 3 3 3 3 Static Safe Handling sse cen dete t ode duis 3 3 3 4 a nup d D s pis is Ss ss R OJ 3 4 3 5 15T 11 sastatnes staastu 3 4 3 6 Re sss mbly lt esat RR ER ads 3 7 3 7 Replacing the 440 mA Fuse sese 3 9 3 8 Replacing the 11A High Energy Fuse sese 3 9 Perfomance Testing and Calibration ss 4 1 4 1 Introduction ira 4 3 4 2 Required Test Equipment A 4 3 4 3 Alternative Test Equipment Fluke 5500A eee eee 4 3 4 4 Performance Tests ii ue ee cine 4 4 4 5 mV DC Test aspetto tii 4 4 4 6 DE Volts Test jcc setos E 4 6 4 7 Diode Testament ette eite iue 4 7 4 8 AC VOIS Iest veces ceed dee eo tn ERR E BRE ER 4 8 4 9 Ohms and Conductance Tests ee aga stas 4 10 4 10 Gapacitance L st gadus vasas a de Quen i quiet 4 11 4 ll Ere quency Test i eter de tih ere deer Perlen e iere deo die 4 12 4 12 Duty Cycle Test eee eet ee OR RE T RE TETTE 4 14 413 Logic Festegkeet 4 15 Contents continued SS ON ul CN RE 4 16 42135 Peak Hold FESS
26. and measure the appropriate signal See Figure 4 10 Table 4 18 Component Test Performance Test nm 0 210 mA ac rms 200 Hz 0 164 0 256 COMPONENT TEST VL AJ EXTTRIGCOM vz N os19f eps Figure 4 10 Configuration 8 Component Test 4 19 867B 863 Service Manual Rel Test Touch Hold Test 4 17 1 Turn on the GMM to VDC and apply 1000V de 2 Press Rel 3 Check for a Rel reading between the limits shown in Table 4 19 Table 4 19 Rel Performance Test 1000 0V dc 5700A using GMM volts input 0 2 0 2 4 Press T 5 Onthe 5700A press to select Standby 6 Check for a GMM reading within the limits shown in Table 4 20 Table 4 20 Touch Hold Performance Test 4 20 Perfomance Testing and Calibration 4 Calibration Glitch Capture Test 4 18 1 2 3 4 Turn on the GMM to mV Press PS View Glitch Capture Arm Apply a 070V p p Pulse 10 kHz Pulse wave Check for the Glitch Capture PASS FAIL indications shown in Table 4 21 Table 4 21 Glitch Capture Performance Test 07V p p Pulse 10 kHz 50 duty PM5139 to the GMM volts input No Trigger External Trigger Test 4 19 1 Turn on the GMM to mV DC 2 Press Gi View Trigger Internal External to select external Exit 3 Press Single Shot Arm 4 Apply a 2V p p 100 kHz Pulse wave
27. by pressing the WAKEUP button If a hardware timeout has occurred pressing does not turn the GMM on the selector must be rotated to a new function NiCd Charging Requirements 2 9 Models 867B use an internal two state charger The initial charge state is at approximately 170 mA 30 mA to allow for full overnight charging 16 hours minimum The second charge state is at approximately 40 mA 15 mA to allow for battery charge maintenance without full charging from a discharged condition A timer reset each time the battery eliminator is plugged in controls the charge state The rate shifts to 40 mA after approximately 16 hours of accumulated charge time The 40 mA rate is used with batteries below approximately 6 volts to limit the amount of power dissipated when a completely dead battery pack is used After this 6 volt cutoff point has been reached the GMM starts charging at 170 mA Battery and Line Level Detection 2 10 The BATT LVL signal is an attenuated version of the battery and charging voltages Table 2 4 summarizes the values to be used by the software to control LOW BATTERY detection and SOFT SHUTDOWN After LOW BATTERY is detected the backlight is turned off and backlight control is disabled 2 8 Theory of Operation 2 Power Supply Functional Blocks 2 4 Power Source Detection LOW BATTERY SOFT POWER ES ux Eliminator connected BATT ELIM 0 0951 2 1 0 Volts NiCd Battery Pack installed BATT TYPE 0 090
28. change in contrast This gain is about 16 7 corresponding to a change of about 77 mV C at the VEE output U2 is provided with power supplies of 5 2 regulated and approximately 24 unregulated Power On Reset Circuit H 2 19 The power on reset circuit receives a 2 5 reference voltage powered by the unregulated output of the converter The trip threshold for comparator U22 is set by R69 and R81 for 2 12 Theory of Operation 2 Input Overload Protection a 3 volt minimum value for VCC C19 delays this trip for at least 100 ms after power is applied to the GMM CRS assures that the cycle is completely repeated by discharging C19 at power down Linear Post Regulators I 2 20 The output voltages from the rectifiers on the DC DC converter are set about 0 6 1 0 volt higher than the required output levels The linear regulators used here are op amps with transistor emitter follower outputs The transistors increase the power available to drive the load Since the op amps are driven from the raw DC voltages U4 or a combination of the raw voltages 24 and a higher regulated voltage 5 2 for U2 the base of the transistors can be driven high enough to allow the transistors to be nearly in saturation This method allows the circuit to regulate with minimal voltage drop across the regulators thus saving power All of the regulators derive their voltages from U31 the 2 5 volt reference The circuit comprised of U2 Q23 R132 and R1
29. is approximately 33 and is nominally 90 mA Power Switch Circuitry F 2 17 S1 the rotary selector switch is closed when it is in the OFF position To turn on the circuitry U34 and its associated components are used to generate a POK 1 signal which turns on the GMM R138 CR25 R139 and C10 in conjunction with U34 provide fast turn on R138 and CR25 and slow turn off R139 and C10 This slow turn off time allows you to rotate through the OFF position on the selector without turning the GMM off Ifa POWER DOWN command is sent to 030 U33 is cleared overriding the switch command and shutting down the power supply The WAKEUP line resets U33 allowing the GMM to restart Note that this circuitry is powered from the bias supply LCD Contrast Control G 2 18 The LCD contrast control is enabled from the microprocessor by a high level 3 3 on the VEE ON line The level of VEE is determined by a pulse width modulated signal on the CONTRAST line The voltage at VEE varies from approximately 24 volts to 14 volts as the pulse width is varied from 100 to 0 This voltage allows control of the LCD contrast The actual voltage applied to VEE is the average PWM voltage minus two diode drops Q17 and Q20 and times the gain of U2 Since the voltage required to achieve optimum contrast is a strong function of temperature the gain of U2 is selected so that the two diode drop temperature coefficient of about 4 6 mV C compensates for the
30. select AC and if necessary press to select rms Press to select LA 100e and complete step 1 in Table 4 15 AC Amps RMS Press to select mA 1e and complete step 2 Press to select Average and to select uA 100e Complete steps 1 and 2 in Table 4 16 AC Amps Average Rotate the GMM selector to Amps a Connect the GMM 5700A and 5725A in Configuration 4 Figure 4 9 If necessary press on the GMM to select DC Then complete step 3 called for in Table 4 14 DC Amps Next press to select AC and if necessary press to select rms Complete steps 3 and 4 called for in Table 4 15 AC Amps RMS Finally press to select Average and complete step in Table 4 16 AC Amps Average Table 4 14 DC Amps Performance Test 300 00 uA 30 00 uA 5700A 29 82 30 18 ETT na 30 000 mA 000 mA 21000ma 000 mA 5700A 20 975 975 200 026 3 0000A 2 9000A 5725A 2 8927 2 9073 For 863 limits are 20 964 and 21 036 Table 4 15 AC es RMS Performance Test 300 00 uA 30 00 10 kHz 5700A 29 20 30 80 E TNI na 30 000 mA 000 mA 21 000 mA 10 kHz 000 mA 10 kHz 5700A 20560 560 2140 440 ES 3 0000A 2 9000A 3 kHz 5725A 2 8773 2 9228 10 000A 1 00A 3 kHz 5725A 0 983 1 018 Use 2 90A 1 kHz with the Fluke 5500A Perfomance Testing and Calibration Performance Tests Table 4 16 AC Amps Average Performance Test 1 300 0 uA short 0
31. supplies Zener diodes VR4 and VRS provide the return path to common from the 5V supplies during an overload 2 13 867B 863 Service Manual The Millivolt Sense Path is used for DC measurements in the 3V and 300 mV dc ranges and for all Ohms Diode Test and Component Test measurements This path uses two 100 kQ resistors R99 and R20 two metal oxide varistors RV2 and RV3 and internal clamp diodes U30 1 When S1 is open the varistors clamp the voltage below 2500V to prevent an arc condition at the rotary selector switch S1 R99 limits the current in the varistors 2 When S1 is closed the clamp diodes in U30 become the voltage clamps R99 and R20 are then used to limit current In mV DC Diode Test Ohms or Component Test a steady state high voltage overload encounters a 200 kQ input impedance The Source Path is used any time the GMM is sourcing current to a device under test and for AC coupled voltage measurements R103 and RT1 in series provide the current limitation for this path When S1 is open volts measurements two varistors are used as overvoltage clamps RV1 and RV2 In Component Test S1 is closed and Q8 and Q9 become the voltage clamps In Ohms or Diode Test S1 closes and Q7 and Q15 become the voltage clamps For all of these circuits the nominal current limiting impedance is 4 6 kQ During an overload however RT1 transitions to high impedance before the clamp components fail This circuit has no fusing
32. this the GMM immediately returns to normal operation and no new calibration constants are retained Setting LCD Voltage 4 34 A separate calibration procedure allows you to establish the existing contrast SET UP setting as a new mid point LCD voltage A viewable contrast range can therefore be reestablished after GMM repair Although the calibration button must be pressed during the following procedure no actual inputs to the GMM are required and no calibration constants are altered Set the user selectable contrast level with the following procedure 1 Rotate the selector to SET UP 2 Press or to set the desired contrast 3 Press Save Set Up 4 Rotate the selector directly to 2 mVDC Now use the following procedure to permanently save this contrast level as the new mid range LCD voltage 1 Push the calibration button 2 Press Set LCD Voltage 3 Press Abort Cal Future adjustments of Set Up Contrast then establish offsets from this new reference point and can be stored as the user selectable contrast level as described above You can also restore the GMM to this reference by leaving the selector in SET UP for 15 seconds without pressing any key 4 28 Chapter 5 List of Replaceable Parts Title Page Introductiori dans ais aa i a 5 3 How To Obtain Parts cnica thoes takas es ss A 5 3 Manual Status Information 5 3 Newer Instruiments att geess 5 3 Service Centers eer ee ee EA Eee ertet dos dune ir
33. uF Accuracy 0 25 10 uF range Decade Resistance Source General Resistance Inc 300Q range Model RDS 66A 0 0125 el Fluke 85 DMM Component Test Alternative Test Equipment Fluke 5500A Multi Product Calibrator ACV DCV ACA DCA Ohms Capacitance Performance Tests 4 4 The following procedures ensure that the 860 Series GMM meets or exceeds all customer specifications To successfully perform these tests it is important that you have read the User Manual and know how to make the measurements each specific test calls for mV DC Test 4 5 Connect the GMM and 5700A in Configuration 1 Figure 4 1 Then perform the three steps called for in Table 4 2 Before proceeding to the next test place the 5700A in Standby Table 4 2 mV DC Performance Test Model Model867B Model Model 863 iis u Lower Upper Lower Upper 9 Limit Limit Limit Limit 300 00 mV 15 00 mV 5700A 14 98 15 02 14 97 15 03 3000 0 mV 2900 0 mV 5700A 2900 9 2899 1 2901 4 2898 6 Perfomance Testing and Calibration 4 Performance Tests L 5700A Calibrator DISPLAY MODE OUTPUT SENSE WAKE UP LE CURRENT MA JA EXTTRIGCOM VO os12f eps Figure 4 1 Configuration 1 mV DC 867B 863 Service Manual DC Volts Test 4 6 Connect the GMM and 5700A in Configuration 2 Figure 4 2 Then perform the three steps called for in Tabl
34. uses the single level trigger comparator External trigger inputs which can range from OV to 5V are applied to the divide by 3 circuit composed of R75 C36 R59 R157 and C100 Divider output is then routed to the single level trigger comparator in U30 37 External trigger threshold voltage is generated in the U1 DAC Note Use a high impedance voltmeter for viewing divider operation 2 21 867B 863 Service Manual 2 22 Glitch Capture 2 42 A brief spike glitch on the input signal can be used to trigger the GMM for a single waveform acquisition Glitch capture thresholds are fixed at 10 of the full scale value of the waveform display For example in the 3V range the full scale value of the waveform display is approximately 5V Therefore the glitch capture thresholds are 0 5V A positive or negative input glitch crossing either of these thresholds causes a trigger The input signal to the glitch capture circuit originates at the second AC amplification stage output TP23 This signal is routed to a bandpass filter R38 C30 C102 and R102 through U30 and on to the comparators DAC and DAC2 generate fixed threshold levels for each comparator The DACI output value is inverted within U30 and applied to the positive input of the comparator this arrangement sets a negative lower trigger threshold A trigger is generated when either a positive or negative signal from the bandpass filter crosses the appropriate threshold Si
35. 00 kHz 30 to 100 of range all ranges Introduction and Specifications 1 Specifications AC Volts Average Responding AC Coupled percent of reading counts 300 0 mV 0 1 mV 1 5 4 0 5 4 0 5 4 0 25 dB 0 16 dB 0 16 dB 3 000V 1mV 1 5 4 0 5 4 0 5 4 0 25 dB 0 16 dB 0 16 dB 30 00V 10 mV 1 5 4 0 5 4 0 5 4 0 25 dB 0 16 dB 0 16 dB 300 0V 100 mV 1 5 4 0 5 4 0 5 4 0 25 dB 0 16 dB 0 16 dB 1000V 1V 1 5 4 1 5 4 NA NA 0 25 dB 0 25 dB Input Impedance 1 11 MQ 1 in series with 0 1 uF Volts Hertz Product 2 x 10 Common Mode Rejection gt 60 dB at 50 Hz and 60 Hz 1 kQ unbalance Common Mode Volts Hertz Product 1 x 10 dBm Reference 2 4 8 16 50 75 93 110 125 135 150 300 600 900 1000 and 12000 Overload Protection 1000V rms DC Volts percent of reading counts mV DC 300 00 mV 0 01 mV 0 025 2 0 04 2 3000 0 mV 0 1 mV 0 025 2 0 04 2 30 000V 0 025 2 0 04 2 300 00V 0 025 2 0 04 2 1000 0V 0 025 2 0 04 2 Input Impedance V DC 10 MQ mV DC 10 MQ mV DC Hi Z gt 1000 MQ Normal Mode Rejection gt 60 dB at 50 Hz or 60 Hz Common Mode Rejection gt 120 dB a dc gt 90 dB at 50 Hz and 60 Hz 1 KQ unbalance Overload Protection 1000 V rms Maximum Allowable Peak AC DC Voltage without causing a reading error 300 mV 3000 mV ranges 15V 30V range 1000V 300V 1000V ranges 1414V 867B 863 Service Manual Diode Test Manual Range 3V Resolut
36. 026 r x30 PTN51 ES ADCLK nr orc 4401 9 gt 5 ET DO GND ae z po C120 Ex P 4 7UF vec EE 6v DIC_VCC GYRATOR ON VAC U28 mn L5 19 2MH7 3 7589708 vcc SED1335FOB SEL 00 8080 MODE R92 OSC TTL TOR e hl e 600 d D lt 15 0 gt reps u21 VAC K y n y 100k U FERRITE as io UPD43256BGU B12 amp C77 C76 c74 G 7 Ex 7 6 4 E E vata 51 10 ro sija GYRATOR_OFF 2 B111 ER 0 105 Au 0 1UF D vais 52 9 AC ON SEI 25V 25V 25V 3 ac_ 100K _ 10 0M Ad 5 25 5 VA12 53 8 A R65 CER CER CER vail 54 37 a3 o u 7 AC OFF 032 V 475 vato 25 56 A4 TO 13 6 MUN2211 vag 56 5 Jas 103 133 Y1 o e e 57 4 15 19 2MEG o LCD VAE A6 ou 4 033 9 s r va 58 3 Ja7 os 6 3 3 CONNECTOR vas 59 25 as ros 3 Y MUN2211 8 30 A17 PROGRAMMED EPROM H vas D a9 to 61 zai BI waa Z San vos 198 MB us FLUKE 867 4504 a 12 U13 vas 23 A11 A14 P1 T Bis vaz a ELE A13 Bt val D 261013 PROGRAMMED EPROM A12 217 10 vao 6 mm ara Al 20 6 u20 Pl d d 67 2 Ka 3 HEURE 68 6008 x10 195 UPDA32568GU B12 S 13 LCDD3 o AS 164 Tm 14 LCDD 1 a as os 173 EL 15 LCDD 2 8 A7 o2 33z Al 16 LCDDO 33 13 4 ans o7 2115 d e or 144 AS sul ag SI 7 1225 a os 2014 amp 7 as oo pao as tor ne PI E CP 35 123 an os 22 13 z M MO rox P12 9 Pl SL H 34 10 26 a9 oa 218 32 4 A3 as Tos li 10 51 E LOAD 371 r 9 21 las os 1711 3 A2 A6 Tos u 5 38 VD lt 7 0 gt 8 3 a7 o 1510 2 al paw 31 ATO TO5 Een Er 4 ZU 16 las o L 149 an VP 1 AE 106 _17 13 P 11 40 67 Jas oo za A
37. 0K i 7 1 ei Wa ass VEE_ON IG e CR14 2 e e MC33172 PS BATS4S au C94 916 VDDDRIVE Ee 1UF SI9955DY A 5 019 e ts e j 4403 INT ves _5 2 Le i y R142 LCD V y v 100K a 3 R23 2 S CONTRAST ANY AN e Y o eii 475 22 1 Le d y F aa CONTROL TES E E ci CR17 V r120 MECCA CLIP TP x15 8356 4 RITA 6303 MMBD7000 V a ud 3 ti 3908 Z TNT_VDD MC33172 TK Ka VDDDRIVE 7 5 g VEEBRIVS TP2 R131 V VR2 TNT VSS HONU 10 0K R127 4 e REG 5 on 10 0K e eo Sei c104 52408 ther 4 MC33172 Lc34 1000PF ie T 0 2265 H i CRE aay R117 CER A yom 2 MMBD7000 iul S SE c103 100K V WV e WAKEUP TP 1000ER 53 5B e e 2av 100 C107 lor TPS ARE 40MIL PADS e e big 35V PUT CAP AT V e Pu SHIELD SCREW vP 1 POWER_DO we MUN2211 CHES ON 7 FLUKE 867 1001 JPF CER Sheet 5 of 5 Figure 6 1 A1 Main PCA cont Instrument Security Procedures Models Fluke 867 863 867B Product Name Graphical Multimeter Instrument Description High performance 5 1 2 digit multimeter Memory Description Fluke 860 Series have six devices that contain memory 1 U23 Serial EEPROM Microchip 93CL86 1k by 16 bits non volatile memory used to store meter configurations and screens and calibration constants 2 amp 3 U21 and U20 SRAM Cypress CY62256V 32k by 8 bits volatile memory used to store display data and program RAM 4 amp 5 U11 and U19 OTP one time programmble EPROM Atmel 27LV010A 128k by 8 bits used
38. 114 gt MUN2211 MUN2211 10 0K 5 V LM3578AN 0 2 H 021 t s 4 99K Y Y 1 401 i 1 05 e 05 1 BATT ELIM 15 1 MUN2211 d A r 11 gt 5 e e m R16 I d E S CR8 T 3 MMBD7000 LM2336M I 19 U 1 tu our 55 I i 1 BIA 1 I i 1 82K R113 si EN 1 35 1 R14 IQ r 2 l 2w 1 00MzG s 6 7 ais i I toe 3 20 T T I 1 i BACKLIGHT ONS H R56 C Q22 1 00MEG INT_VCC E MJD32 1 i 1 1 BATT_TYPE I 1 BATT_LVL I R55 e i 6 49K R29 AW i 51 od R69 R124 1 24 9K i 2 6 34K 3 32M R115 1 100K m 10 0K I 1 j oR i 02 1 I MUN2211 1 V i V 404 2 5 PWR RESET Se i LM40 EIE 2 5V E ii ic Loox ss i U31 NLS 1 Lior U32 gt Rr 1 MUN2211 e de AS 1 R81 e a 1 S 1 31 6K LT H Q4 oxo d R119 4 LM393DT 5 4 1 10 o _ i Q R44 esse 0 0K Q6 Creos 5 li A 97 64K 84 ly LINE Y 2 om x i V 1 Q6 DE Q9 it d 1 l MUN2211 Q10 1 1 UNES Q2 L e gt INT_VCC 013 5B M persie i esej 1 014 ll 1 i RESET l I gt 1 Yecri9 pls T iur 1 1 U o 1N5817 3 24K 20v V 12 1 R140 D H 66 5K 1 U L 1 WV CR15 i L c21 i Bere 2128 Le Zea 5 MC 2 i gt iur N5817 MC33172 10 0K i MUN2211 MMBD70001 I e i INTCVDD TRA I I l CRS 1 cain TERET A as a MMBD7000 d WV BAV74 1 e o o U C 1 1 10K T uo 1 1 or ES 017 Tee 0 911 Lens PA I 429 SRAL tL rous R35 3 3 i MUN2211 SH 6v M 10 0K RIENE R R AER E 1 2 e ANA CONTRAST m 221k 10
39. 2 9 2 13 Boost Preregulator B uet ahead o ane eaae ono edi 2 10 2 14 Battery Charger C soe RR e eee 2 10 2 15 DC DG Converter D eaae rp EUH TH 2 12 2 16 Backlight Current Sink E ss 2 12 2175 Power Switch Cutter teen EE Rassa ANANAS SC 2 12 2 18 LCD Contrast Control G iii pe sk 2 12 2 19 Power On Reset Circuit H ss 2 12 2 20 Linear Post Regulators D 2 13 2 21 Input Overload Protection ss 2 13 Contents continued 2 22 Volt Ohms Input Protection seems 2 13 2 23 External Trigger and Logic Activity Input Protection sese esse eese 2 14 2 24 Amps mA HA Input Protection sese 2 14 2 25 Input Signal Conditioning ss 2 14 2726 AC Volts kadas asin mie taa At aa a sata s d 2 14 DDT DEMO MS AR ts E i S DTS ts I a S i D ONO A eds 2 16 2 28 mV DG iisu eret eei EE 2 16 2229 MEC teen NME HN na Rok ig ka ni sabe ai ass en note 2 17 2 30 Diode R miil iest sies 2 17 2 3 iCapacitante s oe AA ROK EN 2 17 2 32 MAMA ete ehe RUE e re RUE OE OKRE OKERRERA 2 18 28332 LAMPS CES 2 18 2 34 Wavelorm Processing sun check Khon kno Shak bah anat tet atte quitas 2 19 233 i OVETVIEW 14 e A data da s E ss die 2 19 2 36 Detailed Description riada 2 19 2 37 Waveform Triggering tete REESE Re sa 2 20 2 38 OM Winrar bid 2 20 28395 Dual ET A a ee ORE EC OR E E E B E OU 2 20 2 40 Single Trigger eccrine ae ORO RR qae 221 2 41 External Trio Set tie tt tien nets ne Ee 2 21 2 42 GlitchiCaptire
40. 28 amplifies by 1 325 giving an output of a nominal 3 31 volts The circuit of U4 Q18 R89 and R39 amplifies by 2 07 giving an output of a nominal 5 175 volts The circuit of U4 Q19 R19 and R13 amplify the output of Q18 by 1 inverting to provide a nominal 5 175 volts The 475Q resistors in the base circuit of each transistor provide current limit Note The SOT 23 transistors used in this circuitry cannot handle short circuits at their outputs Momentary shorts due to probing will damage these devices Zero ohm resistors R52 R87 R62 R48 and R60 provide isolation of various circuit blocks R60 can be used to disable most of the digital circuitry if trouble is suspected in the digital hardware The other resistors allow separation of the analog loads going to the A D Converter and analog circuits Input Overload Protection 2 21 All ranges and functions of the 860 series are designed to meet or exceed IEC 1010 1 1000V CAT III protection Volt Ohms Input Protection 2 22 The Volt Ohms input VOA incorporates three separate protection circuits In each circuit a series impedance provides current limitation and a shunt voltage clamp prevents overvoltage e The High Voltage DC Path is used for DC measurements in the 30V 300V and 1000V dc ranges A 10 MQ resistor in the Z5 resistor network provides current limiting for this path Internal clamp diodes on U30 hold the low end of this resistor within a diode drop of the 5V
41. 3 Battery Eliminator Charger Optional Eliminator only Optional BP7217 Battery Pack Optional BC7210 Ext Charger Alkaline Batteries 6 AA Cells Optional Customer Supplied Yes Battery Life NiCad gt 8 hrs supplied 210 hrs optional Alkaline gt 8 hrs optional gt 8 hrs supplied NiCd Battery Pack 1 867B 863 Service Manual Resolution and Accuracy The following specifications apply within 1 year of calibration when operating in a temperature range of 18 C 64 F to 28 C 82 F AC Volts True RMS AC Coupled percent of reading counts 30 kHz 100kHz 200 kHz 100 kHz 200kHz 300 kHz 800 00 mV 0 01 mV 1 5 10 0 5 10 0 5 10 4 200 8 200 10 200 0 19 dB 0 10 dB 0 10 dB 1 39 dB 1 68 dB 1 82 dB 3 0000V 0 1 mV 1 5 10 0 5 10 0 5 10 4 200 8 200 10 200 0 19 dB 0 10 dB 0 10 dB 1 39 dB 1 68 dB 1 82 dB 30 000V 1 mV 1 5 10 0 5 10 0 5 10 4 200 8 200 10 200 0 19 dB 0 10 dB 0 10 dB 1 39 dB 1 68 dB 1 82 dB 300 00V 10 mV 1 5 10 0 5 10 0 5 10 4 200 8 200 10 200 0 19 dB 0 10 dB 0 10 dB 1 39 dB 1 68 dB 1 82 dB 1000 0V 100 mV 1 5 10 1 5 10 NA NA NA NA 0 19 dB 0 19 dB 300 mV 300V ranges gt 3 1 1000V range gt 3 1 decreasing to gt 1 41 1 as input voltage increases to 1000V peak voltage not to exceed 1414V Measurement Range 300 mV range from 10 to 100 of range 3V 1000V ranges from 5 to 100 of range For frequencies gt 1
42. 3528 CAP TA 1UF 20 20V 3216 CAP AL 220UF 20 25V SOLV PROOF CAP TA 2 2UF 20 6V 3216 CAP CER 0 1UF 10 25V X7R 0805 CAP TA 1UF 20 20V 3216 CAP TA 100UF 20 10V 7343 CAP TA 10UF 20 16V 6032 CAP CER 0 1UF 10 25V X7R 0805 CAP CER 470PF 1 50V C0G 0805 CAP TA 10UF 20 16V 6032 CAP CER 2700PF 20 50V X7R 0805 CAP CER 22PF 10 50V C0G 1206 CAP CER 0 01UF 10 50V X7R 1206 CAP POLYES 0 47UF 10 50V CAP POLYES 1UF 5 50V CAP POLYES 0 1UF 5 1000V CAP CER 0 22UF 80 20 50V Y5V 1206 CAP CER 390PF 5 50V COG 1206 CAP CER 100PF 10 6000V X5F CAP CER 68PF 5 50V C0G 0805 CAP CER 0 22UF 80 20 50V Y5V 1206 CAP POLYPR 0 033UF 10 63V CAP CER 22PF 5 50V C0G 0805 CAP CER 22PF 10 50V C0G 1206 CAP POLYPR 0 1UF 10 100V CAP TA 3 3UF 20 6V 3216 CAP CER 22PF 5 50V C0G 0805 CAP CER 3 3PF 0 25PF 50V C0G 0805 CAP SILICON 0 2PF 0 1PF 50V 0603 CAP CER 680PF 10 50V C0G 0805 CAP CER 2200PF 5 50V C0G 0805 CAP TA 10UF 20 35V 7343 CAP TA 10UF 20 6V 3216 866970 942552 942552 944686 930248 942529 942529 942529 942529 942529 942529 942529 942552 942552 929877 867572 942529 929476 867572 930149 740563 747261 697409 944590 944587 740597 887278 943667 573857 740597 721050 855101 740563 942958 942941 855101 942560 106051 493908 942524 930243 105954 Table 5 2 A1 Main PCA cont List of Replaceable Parts Parts Reference Descripti
43. 4 863 na 2 300 0 LA 210 0 LA 10 kHz 5700A 205 4 214 6 863 na 3 000A 2 90A 3 kHz 5725A 2 874 2 926 Use 2 90A 1 kHz with Fluke 5500A When using the battery eliminator the upper limit for this test is 2 0 5700A Calibrator OUTPUT SENSE VOA M ai e A o p LO ZO Lo 5 E HI mA MEA AUX UARD G CURRENT A mAlyA EXT TRIG COM vas go X os14f eps Figure 4 8 Configuration 3 mAuA DC and AC 4 867B 863 Service Manual 5700A Calibrator Rear Panel O 5725A Calibrator Rear Panel W 5725A Amplifier Front Panel CURRENT OUTPUT Figure 4 9 Configuration 4 Amps DC and AC ee Perfomance Testing and Calibration 4 Performance Tests Peak Hold Test 4 15 Rotate the GMM selector to AC Volts Y Connect the GMM and the 5700A in Configuration 6 Figure 4 3 Press to select Peak Hold Then make the test called for in Table 4 17 Peak maximum and minimum readings should be within the specified limits Table 4 17 Peak Hold Performance Test 3 VAC 2 828V peak 2 0V rms 5700A 2 39 3 27 10 0 kHz Component Test 867B Only 4 16 Use the Fluke 85 in the tests detailed in Table 4 18 to measure the expected limits at the GMM input jacks V e G and COM Rotate the GMM selector to Component Test
44. 5K 0 4707 TP29 E eee DRO CN ADDATA lt 2 gt e e L vans U C67 PP c72 cup e R54 V 1 oo E 5 W ADDATA lt 1 gt 6800PF 5 0 01UF BE KC DC_DECOMB ST CER 25V 1UF eg ADDATA lt 0 gt VIN 1 47 print t S 3 1 00K CER 25V G I GYRATOR_OFF D1 Las R85 I R32 AD_GND S CROSSING DASHED 14 ba C27 30 9K U 1 00 PARTS CROSSING SE 6 A d 9 9 vw GOUT LINE MUST OVERLAP lur FAST_REF NW GROUND ISLAND GAP 1 c95 dn NO OTHER TRACES OR i 00K 2200PF eat Rd COMPONENTS ALLOWED 0 033UF C89 i 1 00K SE i R63 INTO ISOLATED AREA Un 100K i I I I G_PLUS l I I I I R76 I 4 75MEG 1 I I I ies dco Bae ee eI cc MP3 1 MP2 Y MP4 1 MP3 2 ura MP4 2 MP3 3 MES Sheet 3 of 5 Figure 6 1 A1 Main PCA cont 867B 863 Service Manual U12 A LM358DT F 1 DA
45. 7B 863 Service Manual os6f eps Figure 3 1 Disassembly cont 3 6 Maintenance 3 Reasssembly Reasssembly 3 6 Generally reassembly reverses the disassembly procedure Specifically do the following 1 Verify that the selector switch still points to OFF 2 Place the case top face down on a non marring surface Note At all times avoid stressing the ribbon cable 3 Grasp the board at the top and bottom so that it can be smoothly lowered into position in the case top 4 As you begin lowering the board into position make sure the battery eliminator connection detail B in Figure 3 1 slips into its slot snug against the top case wall Gently press the board into position at the top and bottom 5 6 Replace the three board securing screws Replace the case bottom Torque the six securing screws to 11 13 inch pounds in the sequence shown in Figure 3 2 3 7 Service Manual 867B 863 Figure 3 2 Reassembly 3 8 Maintenance Replacing the 440 mA Fuse Replacing the 440 mA Fuse Refer to Figure 3 3 when replacing the 440 mA fuse 3 7 Fuse Spare Fuse os7f eps Figure 3 3 Replacing the 400 mA Fuse Replacing the 11A High Energy Fuse 3 8 Follow the Disassembly instructions in this chapter Figure 3 1 Remove this fuse shown as step 9 in Figure 3 3 Check for signs of damage smoked arced areas on the circuit board Note Avoid switching 440
46. 9 4 14 Perfomance Testing and Calibration 4 Performance Tests Logic Test 867B Only 4 13 Rotate the GMM selector to LOGIC If necessary press so that TTL is selected highlighted Connect the GMM and the 5139 in Configuration 9 Figure 4 7 Then perform the test shown in Table 4 13 Table 4 13 Logic Performance Test 2 0 MHz 1 5V p p pulse PM 5139 1 9989 2 0011 50 duty cycle 0 7V dc offset 1 5V p p transitioning from 0 7V to 2 2V PHILIPS A 000 os31f eps Figure 4 7 Configuration 9 PM5139 867B 863 Service Manual 4 16 Amps Tests 4 14 ZNWarning Risk of electric shock Do not remove connections at the GMM until all DC and AC Amps tests have been performed Always place the 5700A in Standby prior to swapping Input Source connections between the 5700A and the 5725A Note that inputs to the GMM are provided from the Input Source called for in Tables 4 14 4 15 and 4 16 When 5725A is the input source must be pressed on the 5700A Rotate the GMM selector to Milliamps and Microamps WA Connect the GMM and 5700A as shown in Configuration 3 Figure 4 8 If necessary press on the GMM to select DC and to select uA 100e Complete the step 1 in Table 4 14 DC Amps Press 4 Jagain to select mA 1e then complete step 2 Next press to
47. 9 5 lt V 10 5 Volts Alkaline AA Batteries installed BATT TYPE 0 0909 V lt 4 5or V gt 11 Volts Power Supply Functional Blocks 2 11 Refer to the Schematic Diagram in Chapter 7 during the following discussion The power supply consists of the circuit blocks listed below Each block is identified with a letter A J keyed to Figure 2 2 e Input power selector A e Boost Preregulator B e NiCd battery charger and timeout C e DC DC Converter D e Backlight current sink E e Power switch wake up and power down circuitry F e LCD contrast control and temperature compensator G e Power on reset H e Linear post regulators I e 5 volt bias supply J Input Power Selector A 2 12 The input power selector automatically selects either battery eliminator power line or battery If a battery eliminator is connected to the GMM 12 volts 45 is applied through line filter FL1 to the anode of CR21 This 12 volts turns on Q13 which pulls down the gate of Q14 turning it on Current can then flow from the battery eliminator to the boost circuit B Note that CR22 is back biased If an eliminator is not connected Q13 is off Current is not allowed to flow through Q14 until Q12 is turned on Q12 is turned on when enough voltage remains on the battery to supply the bias regulator J and the power wake up circuitry is enabled When the GMM is off with no eliminator connected Q14 is off and only the bias supply dra
48. Apply 2 900 mA 1 kHz Allow for settling then press Proceed Step 34 Apply 290 00 WA 1 kHz Allow for settling then press Proceed Step 35 Apply 29 00 LA 1 kHz Allow for settling then press Proceed AC Amps Calibration 4 32 1 2 3 4 5 6 7 Place the 5700A in Standby Remove the mA pA connection and connect the 5725A to the A and COM inputs Rotate the selector to TA Amps Step 36 Apply 10 00A 1 kHz Allow for settling then press Proceed Step 37 Apply 1 0000A 1 kHz Allow for settling then press Proceed Step 38 Apply 2 9000A 1 kHz Allow for settling then press Proceed Step 39 Apply 0 2900A 1 kHz Allow for settling then press Proceed 4 27 867B 863 Service Manual Internal Constants Calibration 4 33 1 Place the 5700A in Standby 2 Rotate the selector to 7 mV DC 3 Remove the A Amps connection and connect the 5700A directly to the VA and COM inputs 4 Step 40 Apply 29 00 mV dc Allow for settling then press Proceed Press Save Cal to complete the calibration procedure Place the Calibrator in standby then remove all connections between the Calibrator and the GMM 6 Finally rotate the selector to OFF wait a few seconds then rotate the selector to any function to allow the GMM to recognize the new calibration constants Note Calibration constants are stored permanently only when you press fb Save Cal If you press s _ Abort Cal at any time prior to
49. Connect the 5700A to the VO and COM inputs on the GMM 3 Step 1 Apply 900 0 mV dc Allow for settling then press Proceed This step will take approximately 1 minute 4 Step 2 Apply 2 9000V dc Allow for settling then press Proceed Step 3 Apply 290 00 mV dc Allow for settling then press Proceed Step 4 Apply 29 000 mV dc Allow for settling then press Proceed This step is not valid for units with software below version 1 3 4 23 867B 863 Service Manual DC Volts Calibration 4 24 1 Rotate the selector knob to Y VDC 2 Step 5 Apply 1000 0V dc Allow for settling then press Proceed 3 Step 6 Apply 290 00V dc Allow for settling then press Proceed 4 Step 7 Apply 29 000V dc Allow for settling then press Proceed 5 Step 8 Apply 2 900V dc Allow for settling then press Proceed This step is not valid for units with software below version 1 3 6 Setthe 5700A to Standby DC mAUA Calibration 4 25 1 Rotate the selector to TA mAuA Move the input connection on the GMM from VO to 2 Step 9 Apply 290 00 mA de Allow for settling then press Proceed 3 Step 10 Apply 29 000 mA dc Allow for settling then press Proceed 4 Step 11 Apply 2 900 mA dc Allow for settling then press Proceed 5 Step 12 Apply 290 00 HA dc Allow for settling then press Proceed 6 Step 13 Apply 29 00 uA dc Allow for settling then press Proceed 7 Place the 5700A in Standby DC Amps Cali
50. D Converter must be scaled to provide 300 mV for all inputs The necessary DC restoration path is provided by U30 which contains the active circuitry necessary to scale the Slow A D Converter input by 0 1 1 or 10 The DC signal to be scaled appears at the input to the guard amplifier The guard amplifier drives the compensation amplifier which can be configured for gain by selecting appropriate resistor pairs in Z6 For a gain of 0 1 200 kQ and 20 kQ resistors are selected For a gain of 1 two 200 kQ resistors are selected For a gain of 10 200 kQ and 2 MQ resistors are selected For a given function and range the proper gain is thereby selected to provide identical scaling for the AC and DC paths The reconstructed AC DC input signal must be given an additional DC bias to center it in the unipolar input range of the Fast A D Converter approximately 0 4V to 1 6V dc R32 and R24 form a divider across the Fast A D Converter reference circuitry that establishes the midpoint of the Fast A D Converter input range A second divider R78 and R63 then divides the midpoint divider output by 2 to compensate for a gain of 2 in the next part of the circuit the sum amplifier C89 and circuit resistance provide filtering for the output of the second divider 2 19 867B 863 Service Manual The sum amplifier in U30 adds the reconstructed AC DC input and the midpoint bias signal from the second divider When the GMM is displaying waveforms
51. E EE nee 5 4 IN c M x MEM M 5 4 5 1 List of Replaceable Parts 5 Introduction Introduction 5 1 This chapter contains an illustrated list of replaceable parts for the 867B and 863 Graphical Multimeters Parts are listed by assembly alphabetized by reference designator Each assembly is accompanied by an illustration showing the location of each part and its reference designator The parts lists give the following information e Reference designator for example R52 e An indication if the part is subject to damage by static discharge e Description e Fluke stock number e Total quantity e Any special notes i e factory selected part Caution A symbol indicates a device that may be damaged by static discharge How To Obtain Parts 5 2 Electronic components may be ordered directly from the Fluke Corporation and its authorized representatives by using the part number under the heading Fluke Stock No In the U S order directly from the Fluke Parts Dept by calling 1 800 526 4731 Parts price information is available from the Fluke Corporation or its representatives In the event that the part ordered has been replaced by a new or improved part the replacement will be accompanied by an explanatory note and installation instructions if necessary To ensure prompt delivery of the correct part include the following information when you place an order Instrument model and serial number Part number and revision level of t
52. ERM 1 5M 1 2W 100PPM 944280 R92 R121 RES CERM 100K 1 0 1W 100PPM 0805 928866 R134 928866 R96 RES CERM 16 9K 1 0 1W 100PPM 0805 928817 R97 R147 RES CERM 10 1 0 1W 100PPM 0805 928924 R100 RES CERM 24 9K 1 0 1W 0805 928825 R101 RES CERM 1 15K 1 0 1W 100PPM 0805 928718 R103 RES WW 3 5K 5 5W 20PPM 943712 R104 RES CERM 110K 1 0 1W 100PPM 0805 930230 R108 RES CERM 1 5M 1 125W 200PPM 1206 821181 R109 RES WW 010 5 1W 100PPM 820845 R111 RES CERM 10M 1 0 1W 400PPM 080 943659 R113 RES CERM 12 1 1 5W 100PPM 2010 944033 R114 RES CERM 0 2 5 0 1W 600PPM 0805 944439 R116 RES CERM 5 62K 1 0 1W 100PPM 0805 930110 R120 RES CERM 59K 1 0 1W 100PPM 0805 930219 R122 RES CERM 221K 1 0 1W 100PPM 0805 928890 R124 RES CERM 3 32M 1 0 1W 400PPM 0805 943639 R129 RES CERM 19 6K 1 0 1W 100PPM 0805 943618 R140 RES CERM 66 5K 1 0 1W 100PPM 0805 928908 R144 RES CERM 470 5 0625W 200PPM 0603 106143 R146 RES CERM 150 1 0 1W 100PPM 0805 930086 R148 R150 RES CERM 100 1 0 1W 100PPM 0805 928937 R151 928937 R152 RES CERM 22 1 1 0 1W 100PPM 0805 928932 R153 RES CERM 22 1 1 0 1W 100PPM 0805 928932 R158 RES CERM 47 5 125W 200 ppm 1206 746263 R163 RES CERM 13K 1 0 1W 100PPM 0805 930164 R164 RES CERM 18 2K 1 0 1W 100PPM 0805 930177 R165 RES CERM 27 4K 1 0 1W 100PPM 0805 930185 R167 RES CERM 45 3K 1 0 1W 100PPM 0805 930201 R168 RES CERM 6 04K 1 0 1W 100PPM 0805 928770 R169 R
53. ES CERM 90 9K 1 0 1W 100PPM 0805 930227 R170 RES CERM 49 9K 1 0 1W 100PPM 0805 928697 5 12 List of Replaceable Parts 5 Parts Table 5 2 A1 Main PCA cont Reference Fluke Stock RES CERM 274K 1 0 1W 100PPM 0805 930193 RES CERM 7 68K 1 0 1W 100PPM 0805 930123 THERMISTOR POS 1 1K 20 25 C 867192 VARISTOR 910 10 1 0MA 876193 SWITCH ROTARY 948646 TRANSORMER SWITCHING 948658 JUMPER WIRE NONINSUL 0 200CTR 816090 IC CMOS 10 BIT DAC CUR OUT SOIC 929984 IC OP AMP DUAL LO POWER SNGL SUP SO8 928663 IC RMS DC CONVERTER WB PRECISION SO16 928911 IC OP AMP DECOMP HI SR WIDE BW SO8 930136 U6 IC OP AMP HIGH BW HIGH SLEW RATE SO8 944681 U9 IC BIFET OP AMP HIGH SR WIDE BW SO8 929992 U10 IC CMOS 8 BIT A D W SAMPLE 8 HLD SSOP 929971 U11 EPROM PROGAMMED 948955 U12 IC OP AMP DUAL LOW POWER SOIC 867932 U13 IC GRAPHIC LCD CONTROLLER 3 V 60QFP 929208 U14 IC CMOS TRIPLE 2 1 LINE ANLG MUX SOIC 929013 U15 IC VOLT REG FIXED 5V UPOWR LO DO SO8 929190 U16 18 IC CMOS TRIPLE 2 1 LINE ANLG MUX SOIC 929013 U19 EPROM PROGRAMMED 103655 U20 U21 IC CMOS SRAM 32K X 8 3 3 V 150NS SO28 930131 U22 IC COMPARATOR DUAL LOW PWR SOIC 837211 U23 IC EEPROM SER LV 1K X 16 16K BIT SO8 930144 U24 IC GATE ARRAY 12K GATES RAM 100 QFP 928671 U25 IC MCU 16 BIT A D 3 3 V DUART PQFP112 930263 U26 TRANSISTOR SI N P MOS DUAL 2W SOIC 929997 U27 IC VOLT REG ADJ SWITCHING REGULATOR 821215 U30 IC TWIN WELL RIC ASSY TESTED 946017 U31 IC V REF SHUNT 2 5 V 1 150
54. ES Re ss eae ee E E RC E ja 4 19 4 16 Component Test 867B Only sese 4 19 4 17 Rel Test Touch Hold Test sss 4 20 4 182 Glich Capture Test eae e Assa RH I ITUR a eS 4 21 4 19 External Trigger Test ee eene ie e et ae DR e 4 21 420 Calibration ees oe bad rete 4 22 4 21 Measuring the System Resistance sees sess 4 22 4 22 Starting Calibration Mode on the GMM sse 4 22 423 mV DC Calibration sas eee A sa tht atts 4 23 4 24 DC Volts Calibration iesaista st sts 4 24 4 25 DE MAYA Cal dus duo S 4 24 49265 DC Amps Galibr ti nisssskasisnasas as s at s ta onan o RE Re RE 4 24 4 27 GB AA eee Been aede 4 25 4 28 Modifying the Displayed Value sess 4 25 4 20 Ohms Calibre 4 26 4 30 AC VoltsiCalibration abba 4 27 4 315 AC mA A Calibration eee eee ever REPRE IRE D IR 4 27 4 32 AC Amps Calibration eens ace rn RR ORO Na 4 27 4 33 Internal Constants Calibration sese 4 28 4 34 Setting LCD Voltage ii nann stas cete on ate tte CERE 4 28 List of Replaceable Parts eese esee eese ee ene tn enata tns tn enses estas ta enean sin sn senes enses en ens 5 1 5 1 Introduction saist s station 5 3 5 2 How To Obtain Parts sisi 5 3 5 3 Manual Status Information essent 5 3 5 4 Newer Instruments aaa 5 3 5 5 Service Centers uten steam a a E TED is se 5 4 5 6 Parts coe ne nn nn Te AE An A A ee n A K nee 5 4 Schematic Diagrams
55. ESD Follow these two rules for handling static sensitive devices HANDLE ALL STATIC SENSITIVE COMPONENTS AT A STATIC SAFE WORK AREA Use grounded static control table mats on all repair benches and always wear a grounded wrist strap Handle boards by their nonconductive edges only Store plastic vinyl and Styrofoam objects outside the work area STORE AND TRANSPORT ALL STATIC SENSITIVE COMPONENTS AND ASSEMBLIES IN STATIC SHIELDING BAGS OR CONTAINERS Static shielding bags and containers protect components and assemblies from direct static discharge and external static fields Store components in their original packages until they are ready for use 3 3 867B 863 Service Manual Note Modern electronic components are sensitive to static voltages under 100V You can develop a charge of 2 000V by walking across a vinyl tile floor or a charge of 5 000 to 15 000V when polyester clothing moves on your body Since 30 000 to 40 000V must be generated before you will feel a shock you will not notice these lower voltage static problems that are so harmful to electronic components Protection circuits used with these components can only reduce not eliminate susceptibility to ESD You can cause degraded performance or failure by touching a sensitive assembly or by simply exposing the component to the electric field surrounding a charged object Component failure from ESD may not occur until two hours to six months after the initial damage
56. FLUKE 86 7B 863 Graphical Multimeters Service Manual PN 689312 December 1997 1997 Fluke Corporation All rights reserved Printed in U S A All product names are trademarks of their respective companies Table of Contents Chapter Title Page 1 Introduction and Specifications ses 1 1 1 1 TOUCH ON ir sazi a tat itatsi Sedas pata tetes ete reines 1 3 1 2 DI IR REO NER SE 1 3 1 3 Power Requirements ep st dus 1 3 1 4 Options Accessories and Related Equipment sese 1 4 1 5 Operating Instructions is oe erat iba 1 4 1 6 Obtaining Service ss e o eee ee ER eR E ER BE NE ER 1 4 1 7 Conventions Used in This Manual sss 1 5 1 8 Chapter Contents da ado UI OUR Ua du dd 1 5 1 9 Specifications rss re A AE ARE RE SR E 1 6 2 Theory of Operation cssccssccssscsssssssssssscsssesssssssssssssssseessssessssessssessssessessssessssessssesees 2 1 2 1 Introductions 55 oet EE 2 3 2 2 Start Up Sequence nicotene Pn ATE 2 3 2 3 Function Selection ts oasis 2 3 2 4 Power SUPPLY gais aes RE si Un 2 4 2 5 Power Supply Input Voltages essent 2 4 2 6 Power Supply Output Voltages and Currents sse 2 6 2 7 Power Supply Signals screen aa gs 2 7 2 8 Power ON OFF Requirements essent 2 8 2 9 NiCd Charging Requirements sese 2 8 2 10 Battery and Line Level Detection sss sees 2 8 2 11 Power Supply Functional Blocks sese 2 9 2 12 InputPowerSelector A e ena
57. KHZ HOLDER LED 706564 930250 929877 866970 866970 106146 697177 832683 866533 769778 944301 747378 740571 747378 747378 105954 494633 106952 912456 821116 821116 821116 821116 929745 851659 912451 929745 559708 942545 876529 943118 943121 930057 948666 836486 105962 943704 944558 867734 876995 948716 5 5 9 867B 863 Service Manual 5 10 Reference Designator MP2 P1 P3 Q1 3 Q5 Q6 Q11 13 Q32 34 Q4 Q18 Q21 Q23 Q26 Q27 Q7 9 Q15 Q10 Q14 Q16 Q17 Q20 Q19 Q22 Q24 Q25 Q28 Q30 Q31 R1 R3 R22 R32 R61 R118 R149 R2 R4 R5 R6 R17 R36 R46 R72 R94 R117 R133 R7 R162 R166 R8 R10 R13 R19 R25 R35 R39 R58 R71 R73 R102 R105 R115 R119 R127 R128 R131 R135 R136 R9 R11 R106 R132 R12 Table 5 2 A1 Main PCA cont 1 SHIELD FENCE SHIELD ANALOG RIGHT SHIELD ANALOG LEFT CONN FLAT FLEX 1MM CTR RT ANG 16 POS HEADER 1 ROW 2MM CTR 3 PIN TRANSISTOR SI NPN BIASED SC 59 TRANSISTOR SI NPN SWITCH SOT 23 TRANSISTOR SI NPN SELECT IEBO SOT 23 TRANSISTOR SI PNP 50V 0 2W SOT 23 TRANSISTOR SI P MOS 2 5W SOIC TRANSISTOR SI N MOS DUAL 2W SOIC TRANSISTOR SI NPN SMALL SIGNAL SOT 23 TRANSISTOR SI PNP 40V 0 2W SOT 23 TRANSISTOR SI BV 40V 15W D PAK TRANSISTOR SI PNP BIAS 50V 0 2W SC 59 TRANSISTOR SI NPN BIASED SC 59 TRANSITOR PHOTO W DAYLIGHT FILTER RES CERM 1K 1 0 1W 100PPM 080 RES CERM 11K 1 0 1W 100PPM 0805 RES CERM 464K
58. LL KEYPADINT sv ee WAKEUP S12 os4 eps Figure 2 3 Keypad Connections 2 25 WWWWW WWW GOES ON Aces GS Chapter 3 Maintenance Title Page Introd ction nat ets tees ES sams 3 3 Warranty Repairs and Shipping Information ssseseeseeeeseseeseseeseesesess 3 3 Static Safe Handling asa 3 3 Clean tt eei verde dab 3 4 Disassembly Rae rete ehe nete devi dok nade kk e eee ei id 3 4 ERES ao NAA o rest nee Pe PER E deae Pe Ee AE 3 7 Replacing the 440 mA use 3 9 Replacing the 11A High Energy Fuse sse 3 9 Maintenance 3 Introduction Warning Service procedures in this manual should be performed by gualified personnel only To avoid electrical shock do not service this product unless you are gualified to do so Introduction 3 1 This chapter provides handling cleaning disassembly and assembly instructions Warranty Repairs and Shipping Information 3 2 If your GMM is still under warranty see the warranty information at the front of this manual for instructions on returning the unit To contact Fluke call one of the following telephone numbers USA and Canada 1 800 44 FLUKE 1 800 443 5853 Europe 31 402 678 200 Japan 81 3 3434 0181 Singapore 65 276 6196 Anywhere in the world 1 425 356 5500 Or visit Fluke s Web site at www fluke com Static Safe Handling 3 3 The GMM contains components that are susceptible to damage from electrostatic discharge
59. M ANALOG SUPPLIES TO POWER SUPPLY COMMON GND5 QUIET ANALOG GROUND RETURN TO POWER SUPPLY COMMON DGND DIGITAL SUPPLIES GROUND RETURN TO POWER SUPPLY COMMON AND POWER SUPPLY GROUND FLUKE 867 1001 Sheet 1 of 5 MP2 Schematic Diagrams 6 MP3 UW ts R111 Le mS 5 UG o pl o S c42 R65 gt 1 CR3 8 E EM Zi 5 EH x a S ncso O 3 U24 u20 XF101 Fi XF 102 css D z oa i 4 l Tell s isis pa Do Ra m e 3 27815 18 5 Bent 23 R1570 El A zine O R ST aes Rb EI ers 025 028 Sal Dz 2 C36 v FS 8 os E C48 C46 7 4 L it o Rat QW P cas LU
60. M Set Up function Single trigger incorporates a single adjustable threshold with fixed hysteresis e External Trigger allows for an external single trigger input at the center GMM input terminal e Fixed threshold trigger applies predetermined Dual Trigger threshold voltages when the GMM is set for Glitch Capture e Component Test uses an internally generated digital trigger Dual Trigger 2 39 2 20 The trigger is enabled when the digital ASIC U24 unasserts the trigger holdoff signal on U24 75 The digital ASIC can then recognize a trigger asserted by the analog ASIC on U30 53 The internal trigger signal is derived from the input measurable at TP19 passes through a filter R1 and C109 and is routed through U30 56 to two comparators in the U30 analog ASIC The threshold levels are established by the following two pulse width modulated digital to analog converters DACs in the digital ASIC Theory of Operation 2 Waveform Triggering e The upper comparator controlled by DAC2 recognizes signals crossing the more positive of two thresholds The DAC2 output passes through filter R67 and C79 the filtered DAC2 output can be observed at TP16 e The lower comparator controlled by DACI recognizes signals crossing the more negative threshold The DACI output passes through filter R80 and C33 the filtered DACI output can be observed at TP20 Use the following procedure to check either of the DACs 1 Connect a high impedance vol
61. OMOVE os3f eps 2 Power Supply Blocks Figure 2 2 11 867B 863 Service Manual DC DC Converter D 2 15 The DC DC converter is a conventional push pull transformer couple type The center tap of T1 is fed from the 15 from the boost preregulator Q16 drives one side or the other of the primary to ground at the rate of approximately 100 kHz determined by the oscillator U34 R10 and C22 and a divide by 2 flip flop U33 This provides a 30 volt peak peak signal on the primary of T1 Diodes CR14 and CR10 and associated components use the 50 square wave from U33 to produce non overlapping signals for the gate drives of Q16 Capacitors C24 and C57 ac couple the drive signal to prevent a stopped clock from causing burn out of Q16 The outputs of the secondary windings are rectified and filtered to provide the raw DC voltages needed by the linear post regulators 1 The output of CR12 is filtered by C21 and provides the raw compliance voltage required by the backlight current sink E Backlight Current Sink E 2 16 The backlight current sink is enabled by BACKLIGHT ONS going low which turns off 05 allowing its collector to go open Voltage is then applied to the base of Q21 R16 turns this voltage minus one base emitter drop into a current This current flows in the collector circuit of Q21 consisting of the raw voltage from C21 and the LEDs in the LCD backlight The tolerance on this current
62. R145 and C99 form a filter that is selected by the analog switch U14 3 U14 4 U14 5 and U14 9 The output of this filter is connected to the input of the Fast A D Converter The DC signal to be recombined with the AC signal can be found on TP29 Without any DC input or with the selector in AC and the GMM input shorted TP29 should read approximately 1 V the center value of the Fast A D Converter with zero input Note Test the operation of the comp amplifier by selecting the 300 mV dc range applying 300 mV dc to the input and checking TP29 for 1 3V dc The reconstructed input signal to be digitized by the Fast A D Converter can be observed on TP19 With either the selector in AC or in DC with the GMM input shorted the AC portion of the signal has a 1V bias Note When you use an oscilloscope to view the input of the Fast A D Converter U10 use a probe with a short 2 inch ground lead View the signal between U10 16 VIN and U10 20 GND Waveform Triggering 2 37 Overview 2 38 The GMM uses software and hardware triggers to control waveform display and frequency counter operation A software trigger occurs automatically if no hardware trigger has occurred for a fixed period The following types of hardware triggers are available e Dual Trigger is the default providing two adjustable thresholds Dual triggering thereby allows for adjustment of the hysteresis window e Single Trigger can also be selected via the GM
63. Theory of Operation DEN SA90 g UONSUNY 2I BEAN et 0 juaun2 A JUSIIND SWUYO SHOA 3 IECH WOO yusuodwoy Bulyoym IUOJIMS GN 10SS80014N OL ns SLNNHS A ddng Jamog 0 dn9 EM lt 4 Aiejou juano zova gt zova 9HOMS LOVA gt nova Jexe diynW 196611 euJa x3 AWAQoY 91601 ZUN OLAIQ 8 G v use OLX LOL OLN Jo ET juoneuiquos uojenuayy 196611 euloyx3 JANY 91607 WNW 8X 81 C WOU ein LEN Mna 1866111 yuo uonisinboy Lt ZHW 8 y ova jeet duo 19497 20 LIMOMS y ANDO 19661 a JossoooJgn WOl4 gt xNMOG 43MOd s y oljuog pue sneg Aginouo sioyeredwog z10vVa FLOW C V J0sseooJdn OL al eng lova y IMLIVE TT sud sz I V J0SS9901dN OL e Jajuno9 JAN AUOJ ure OLX 9 3dALLIVa 29uaJajoy uongenuenv 10SS9901g OL a sr ndul oy Aava NOtdd33 eInpon pieoq ey Aiddns Jamog HOSSF90HdOHIIN sq sz sjajuno9 Aouanbea Z 33A SBeyoA 491 SHOA Z LHOMS OIHOMS SJOA ZC weie oly feidisq WO14 0L Geel exce 911011409 491 WYNS ein pe Len an 3610 ZIL Y Le jonuooay uonenueny indu od uonoejold eoJnos gt jonucogy ouejpedeg poJnos 1991 P OHUODMS SW
64. US 944595 1 6 PS6 PWR SUP 3 6W 12V 300MA CHRGR CNV UK 942607 1 867B 863 Service Manual Table 5 1 860 Series Final Assembly cont Reference iex Fluke Stock ER 863 KEYPAD MODULE S2 867B KEYPAD MODULE TM1 86X USER MANUAL GRP E ENG FR SP DUTCH TM2 86X USER MANUAL GRP G GER ITAL SWE NORW TM3 86X USER MANUAL GRP J ENG JAPAN TM4 860 USER MANUAL 1 867B only 2 863 ONLY 3 867BE 120V only 4 867BG and 867BE 230V only 5 867BJ 100V only 948799 948641 944178 944181 944710 688192 aa aaa 6 867BEA 240V only 5 Parts List of Replaceable Parts H6 6 Places 7 ER O O S E E N S Ro r 0 D E a 53 am Z A As MP23 2 Places MP40 A1 U11 U19 H3 3 Places P2 MP13 H12 2 Places N 0 MP12 MP20 MP3 MP21 MP2 MP1 Fluke 860 T amp B os20f eps Figure 5 1 860 Series Final Assembly 5 7 867B 863 Service Manual 5 8 C1 C89 C2 C12 C61 C65 C88 C3 C90 C4 C6 C5 C11 C14 16 C18 C28 C29 C32 C33 C39 C44 C58 C64 C66 C74 83 C87 C92 C93 C101 C7 C10 C21 C91 C119 C8 C9 C13 C96 C97 C17 C22 C19 C85 C20 C23 C24 C30 C57 C25 C26 C27 C52 C54 C31 C34 C63 C35 C36 C37 C98 C38 C43 C40 C49 C51 C41 C42 C45 C47 C46 C48 C50 C53 C55 C56 C108 C59 C60 C62 Table 5 2 A1 Main PCA Reference Fluke Stock CAP TA 1UF 20 35V
65. Volts DC Coupled DC to 1 MHz Volts AC Coupled 3 Hz to 1 MHz Input Impedance Refer to the meter mode specifications Glitch Capture Glitch Trigger Level 20 of range 300 mV 300V 6 of range 1000V Minimum Glitch Time 1 us 2 1 2 11 2 13 2 31 2 33 2 34 2 35 2 36 Chapter 2 Theory of Operation Title Page Introd cti0ni 5v nn as kimm 2 3 St rt Up S gu nc et Een desees er e adesse eie edis js 2 3 Function Selection 4e et fee eere etenim 2 3 Power Supply aene rne oe 2 4 Power Supply Input Voltages esses 2 4 Power Supply Output Voltages and Currents sss 2 6 Power Supply Sugnals ne n TENSE e NS ei 2 7 Power ON OFF Requirements 2 8 NiCd Charging Requirements sese eee eee 2 8 Battery and Line Level Detection 2 8 Power Supply Functional Block 2 9 Input Power Selector A 2 9 Boost Preregulator OD 2 10 Battery Charger G tel ia ki kv dd 2 10 DC DC Converter D avr Tea ite cere denen 2 12 Backlight Current Sink E 2 12 Power Switch Circuitry E 2 12 LCD Contrast Control G ei 2 12 Power On Reset Circuit H sese 2 12 Linear Post Regulators 1 2 13 Input Overload Protection 2 13 Volt Ohms Input Protection 2 13 External Trigger and Logic Activity Input Protection 2 14 Amps mA WA Input Protection 2 14 Input Signal Conditioning
66. YO huauodwo5 EILHOMS pc OLIHOMS ova 80L un Le jexejdniniq 18114 OG SUluo SIOA CECS WO14 0L ra eq ova luvn ysnipy 10SS99014N WO14 OL jsenuon 1uBipioeg 002X OFZ 091 SIOAUQ SINPON GOT Figure 2 1 Block Diagram 867B 863 Service Manual Power Supply Output Voltages and Currents 2 6 Refer to Table 2 2 Table 2 2 Power Supply Outputs Voltage Tol V Tol Ripple mA peak to peak 5 0 50 mV rms 43 mA 224 mW 0 2V p p maximum noise ETT 1 MHz BW 3 27V 27V 007 07 2 0 50 mV me mV rms 12mA MA 40mw mW 0 02 C max 02 C max 3 27V 0 07 2 0 50 mV rms 82 mA 271 mW VAD and VCC are tied together unregulated DC used for IBL 5 2V 5 0 50 mV rms 32 mA 166 mW 0 2V p p maximum noise to 1 MHz BW 20V 115 mW TC 38 mV C center value adjusted and stored at test 4V 15 80 mA 264 mW current for backlight LED 15 IBL Current Return for IBL max 1 5V burden voltage IBL is controlled by a linear current source taken from unregulated DC Measured with an 8842A in AC rms mode Theory of Operation Power Supply Power Supply Signals 2 7 Table 2 3 Power Supply Signals BACKLIGHT_ON Control signal generated by U25 In Model 867B this signal toggles the backlight power levels BATT_LVL Monitors an attenuated 0 to 5V vers
67. as been modified 19000 0000090 Meter SA Mext i Restore Digit i A i w i value i Done os11s eps Figure 4 13 Modifying the Displayed Value 4 25 867B 863 Service Manual 4 26 Ohms Calibration Refer to Figure 4 14 for an example of the display during ohms calibration 1 2 3 4 o L 10 Verify that the 5700A is in Standby On the GMM rotate the selector to al Ohms and remove the A connection Connect the 5700A directly to the VO 9 and COM inputs on the GMM Step 17 Apply 1 9000 MQ Modify the value as necessary GMMs with version 1 1 or 1 3 software must have 2 9000 MQ 0 025 applied for this step Allow for settling then press Proceed Step 18 Apply 190 00 kQ Modify the value as necessary Allow for settling then press Proceed Step 19 Apply 19 000 kQ Modify the value as necessary Allow for settling then press 1 Proceed Step 20 Apply 1 9000 kQ Modify the value as necessary Allow for settling then press Proceed Step 21 Apply 190 00Q Modify the value as necessary Allow for settling then press Proceed The following steps adjust nS 1 R the nominal values are 100 nS and 1000 nS respectively Use Modify value to make adjustments Remember to use 1 source Lead resistance a Step 22 Apply 10 000 MQ Modify the value as necessary Allow for settling then press Proceed b Step 23 Apply 1 0000 MQ Modify the val
68. bration 4 26 1 Rotate the GMM selector to Ta Amps 2 Connect the 5700A and the 5725A as shown in Figure 4 9 3 Connect the 5725A to the A and COM inputs on the GMM 4 Step 14 Apply 10 000A dc Allow for settling then press Proceed 5 Step 15 Apply 2 9000A dc Allow for settling then press Proceed 6 Step 16 Apply 0 2900A dc Allow for settling then press Proceed 7 Set the 5700A to Standby 4 24 Perfomance Testing and Calibration 4 Ohms nS Calibration Ohms nS Calibration 4 27 Modifying the Displayed Value 4 28 You must modify the calibration constants to compensate for the measured lead resistance See Figure 4 13 Change the selected digit of the displayed nominal value by pressing Modify value or V Select the next digit by pressing Next Digit and repeating the adjustment Press Done to end the adjustment procedure For example calibration at 190 00 ohms could proceed as follows e Source 190 0732 ohms at output terminals e Leads 0 123 ohms e Altered value source value 190 0732 lead resistance 0 123 190 2962 ohms The reading will appear as nominal with an arrow pointing to the digit to be adjusted With the GMM reading 190 00 the altered value should be rounded to 190 30 Use the following key press sequence Modify value Next digit unit digit 3 Next digit Next digit Next digit 4 unit digit 1 Done The nominal value for calibration h
69. components allowing it to fully recover from both high voltage transients and steady state overloads External Trigger and Logic Activity Input Protection 2 23 The external trigger input receptacle consists of the following two signal paths each with a separate input protection circuit The DC path is used only for logic activity A 1 5 MQ resistor R91 is used for current limitation The low end of this resistor is clamped by chip diodes on U30 The AC path is used for both logic activity and external trigger signals The current limitation for this path is provided by R75 1 MQ in parallel with C36 100 pF External clamp diodes CR26 protect U30 from high voltage transients These clamp diodes hold the low end of R75 within a diode drop from the 5V supplies Zener diodes VR4 and VRS provide the return path to common from the 5V supplies during an overload Amps mA uA Input Protection 2 24 Fuses and diode clamps provide overload protection for the Amp and mA LA input circuits Both of these circuits are designed to prevent GMM damage from a 1000V unlimited energy source applied at the test leads The Amps input is protected by F1 an 11A 1000V AC DC 17000A breaking capacity fuse The mA uA input is protected by F2 a 440 mA 1000V AC DC 10000A breaking capacity fuse Prior to F2 clearing the clamp diodes CR1 and CR13 protect measurement circuitry from overcurrents Input Signal Conditioning 2 25 AC Volts 2 26
70. converter TP21 is provided at a gain of 4 The output to the Average converter U30 the Fast A D Converter U10 and the frequency comparators U30 is provided at a gain of 1 Starting with the conditioned ac signal the average converter produces a dc voltage equal to the average value of the full wave rectified ac signal multiplied by 1 111 The average converter uses an op amp in U30 the analog processor in an inverting configuration Direct output from U8 provides the converter input and is routed through dc blocking capacitor C8 and the 20 kQ resistor of Z3 to U30 97 which is a virtual ground The 22 2 kQ resistors of Z3 provide the feedback The 22 2 kQ resistor connected to U30 95 provides feedback for the positive portion of the signal and the 22 2 kQ resistor at U30 94 provides feedback for the negative portion The dc voltage the differential across U30 94 and U30 95 is routed to the active filter and the Slow A D Converter in U30 See Table 2 5 All VAC ranges use the 300 mV Slow A D Converter ranges Table 2 5 Average Converter part of U30 Range Stage 1 Stage 2 RC Net Stage 3 Converter DC Total Gain Gain Gain Gain Gain Gain Divider Gain 300 0 1 10 1 1 1 111 1 1 111 mV The rms converter U3 provides a dc voltage equal to the rms value of the conditioned ac signal Input to the rms converter is from TP21 through dc blocking capacitors C69 and C68 Output of the rms converter goes through a de divider gain of 0 25 cr
71. e 4 3 Before proceeding to the next test place the 5700A in Standby Table 4 3 DC Volts Performance Test Model 867B Model 863 GMM Lower Upper Lower Upper 5353 Limit Limit Limit Limit 30 000V 000V 29 29 000V 5700A 28 28994 29 29000 28 28986 29 29014 ES 300 00V 290 00V 5700A 290 09 289 91 290 14 289 86 1000 0V 1000 0V 5700A 999 5 1000 4 999 4 1000 6 In 6 5700A Calibrator FREEZE Display f _H2_ SAVE MODE PRINT max OUTPUT SENSE VOA TOUCH IKE UP n eee A m in EXTTRIGCOM VO os13f eps Figure 4 2 Configuration 2 DC Volts Perfomance Testing and Calibration 4 Performance Tests Diode Test 4 7 Rotate the GMM selector to Diode Test 32 Connect the GMM and 5700A in Configuration 2 Figure 4 2 selected Then perform the three steps called for in Table 4 4 Before proceeding to the next test place the 5700A in Standby Table 4 4 Diode Test Performance Test 2 5000V 5700A 2 4986 2 5015 867B 863 Service Manual AC Volts Test 4 8 Rotate the GMM selector to AC Volts V Connect the GMM and 5700A in Configuration 6 Figure 4 3 Make sure that rms is selected in the display above s then perform the 12 steps called for in Table 4 5 Next press on the GMM to select Average and perform the four steps called for in Table 4 6 Before p
72. e VU input through R31 RTI and R103 This gives a nominal output impedance of 11 1 kQ This oscillator allows frequencies from 2 Hz to 18 75 kHz Component Test uses the 8 bit Fast A D Converter U10 to make the current and voltage readings The voltage sense path is kelvin connected to the volt ohm input through R99 and R20 The voltage signal is then routed through U30 and divided by 10 at U30 87 A 1V dc bias is added to the signal at TP29 With the gyrator AC and peak circuits turned off U14 10 and U14 11 asserted high U14 9 asserted low the signal is routed through U9 to TP19 and into U10 16 The current readings are obtained through a virtual ground connection between common and the measurement ground GND3 Any current that flows through a device under test flows into the I V amp on U30 creating a voltage proportional to the current For a short circuit between VA and COM the voltage at TP28 is 309 mV rms 12 This voltage is routed through U30 87 Like the voltage measurement a 1 V dc bias is added to the signal at TP29 the gyrator AC and peak circuits are turned off and the signal is routed through U9 to TP19 and U10 16 The current and voltage readings are taken on separate cycles of the oscillator stimulus The switching between voltage and current takes place entirely in U30 The two component test modes are described as follows e In normal mode a lissajous is taken every four cycles for high frequencies the li
73. eated by the 4 95 kQ and 1 65 kQ resistors of Z3 The output from this divider is used for 2 15 867B 863 Service Manual 2 16 precharging the Slow A D Converter through U30 67 the analog processor The output also goes to an RC filter R30 and C26 and then on to the Slow A D Converter at U30 66 TP17 See Table 2 6 Table 2 6 RMS Converter U3 Rance Stage RC Net Stage 3 Converter DC g 1 Gain Gain Gain Gain Divider Gain Dan EE on Ew sm 3 o 25 pom For sm x e fe oo Table 2 7 Test Point Voltages Full scale input 30000 counts 10000 counts for 1000V range Range AC TP25 AC TP23 AC TP21 DC TP17 DC Avg VAC U30 75 300mv mV somv mV 300 mV 1200 mV 300mv mV 300 mV Fw pom La mon xem xem DC Volts 2 27 DC Volts measurements are connected at the VO V and COM inputs VO connects directly to the 10 MQ resistor of Z5 which is connected in series with the 101 01 kQ U30 17 10 01 kQ U30 13 or 1 000 kQ U30 12 resistor These total series resistances divide down the input voltage by 0 01 0 001 or 0 0001 for the 30V 300V or 1000V ranges respectively Switches in U30 select the resistor and pass the conditioned signal on to the combination circuit and the active filter The input signal is returned through selector contacts S1 4 and S1 7 through R109 and back to the COM input All VDC ranges use the 300 mV Slow A D Converter range mV DC 2 28 Millivolt DC measu
74. eries A pca is a printed circuit board and its attached parts A pin or connection on a component is specified by the component reference designator a dash and a pin number For example component U30 pin 92 would be U30 92 Chapter Contents 1 8 The chapters in this manual document service for the GMM as follows Chapter 1 Introduction and Specifications describes the Service Manual explains special terminology and conventions and provides complete GMM specifications Chapter 2 Theory of Operation describes the GMM s circuitry in terms of functional blocks with a description of each block s role in overall operation A detailed circuit description is then given for each block Chapter 3 General Maintenance provides information on general maintenance handling precautions and disassembly instructions Instructions covering warranty repairs and shipping the instrument to a service center are also contained in this chapter Chapter 4 Performance Testing and Calibration contains information on required test equipment performance test procedures and calibration of the GMM Chapter 5 List of Replaceable Parts describes parts used in the GMM along with ordering information Chapter 6 Schematic Diagrams contains a full set of schematic diagrams and component locators 1 1 5 867B 863 Service Manual Specifications 1 9 General Display LCD Dot Matrix 240 X 200 pixels Fluke 867B Transmissive Backli
75. esses 4 24 4 26 DC Amps Calibration rre tete er t red 4 24 4 27 Ohms nS Calibration ss 4 25 4 28 Modifying the Displayed Value s nnsssoneneoeensseesseseesseseeessesese 4 25 4 29 Ohms Calibration ss 4 26 4 30 AC Volts Calibration sssss 4 27 4 31 AC MANA Calibrations rennene i ai i 4 27 4 32 AC Amps Calibration ss 4 27 4 33 Internal Constants Calibration sseoseeeeseeseseoseosseeseeseessessessssseessese 4 28 4 34 Setting LED Voltage nee pere dis 4 28 Perfomance Testing and Calibration 4 Introduction Warning Service procedures should be performed by gualified service personnel only To avoid electrical shock do not perform any servicing unless you are qualified to do so Introduction 4 1 This chapter contains performance testing procedures that can be used to verify GMM operation within customer specifications A separate set of calibration procedures is also included use these procedures for closed case calibration of the GMM Equipment connections for performance testing and calibration are shown at the end of this chapter The appropriate connection configuration is referenced in each procedure Required Test Equipment 4 2 Equipment required for performance testing P calibration C is listed in Table 4 1 The 5700A is used to calibrate dc volts ac volts dc ac mA H A and Ohms The 5725A driven by the 5700A is used to calibrate dc and ac amps ZNWarning
76. for program memory 6 U24 gate array NEC UPD65654GF contains 512 by 8 bits RAM used for signal processing Memory Cleaning Instructions The user controlled storage operation other than calibration constants is the storage of Min Max Average meter configurations and screens Min Max and Average is cleared when the function switched is changed The meter configurations and screens are cleared through a process outlined in the manual To clear the screens Push the SAVE PRINT button Push the SAVE SCREEN blue button 1 select the screen to clear using the up and down arrows blue buttons 1 and 2 push the CLEAR button blue button 4 repeat until all three screens positions are blank To clear the meter configurations Push the SAVE PRINT button push the SAVE CONFIG button blue button 4 select the configuration using the up and down arrows blue buttons 1 and 2 push the CLEAR button repeat until all seven positions are blank 860 Series SOMV 1 of 1 3 14 2007
77. he pca printed circuit assembly containing the part Reference designator Fluke stock number Description as given under the Description heading Quantity Manual Status Information 5 3 The Manual Status Information table that precedes the parts list defines the assembly revision levels that are documented in the manual Revision levels are printed on the component side of each pca Newer Instruments 5 4 Changes and improvements made to the instrument are identified by incrementing the revision letter marked on the affected pca These changes are documented on a Manual Supplement sheet which when applicable is included with the manual 5 3 867B 863 Service Manual Service Centers 5 5 A list of service centers is located on the Fluke website www fluke com or you can reach Fluke at USA and Canada 1 800 44 FLUKE 1 800 443 5853 Europe 31 402 678 200 Japan 81 3 3434 0181 Singapore 65 276 6196 Anywhere in the world 1 425 356 5500 Parts 5 6 Note Zi This instrument may contain a Nickel Cadmium battery Do not mix with the solid waste stream Spent batteries should be disposed of by a qualified recycler or hazardous materials handler Contact your authorized Fluke service center for recycling information Manual Status Information Ref or Option number Assembly name Fluke Part Number Part Number Revision Level Level 863 Main PCA 103629 867B Main PCA 616570 List of Replaceable Parts 5
78. ion 0 0001V Accuracy 0 05 of reading 2 digits Open Circuit Voltage 3 1V Diode Test Auto Accuracy 20 Current Ranges Ranges for True True RMS RMS AC Current and DC Current Ranges for Average g g Maximum Measurement Range Responding AC Burden Fuse Range to Full d Scale Current Voltage Protection 1000V 3000 0 uA 5 100 3000 uA 0 3V 440 mA O 1000V 30 000 mA 5 100 30 00 mA 0 03V 440 mA O 1000V 1000V 3 0000A 5 100 3 000A 0 1V 11A 1000V 10 000A 5 100 10 00A 0 3V 11A 1000V 1 DC ranges available on the Fluke 867B only DC Current Accuracy percent of reading counts 0 1 15 0 1 2 0 1 2 1 Ranges available on the Fluke 867B only 2 Fluke 863 30 mA DC range accuracy 0 1 15 AC Current Accuracy percent of reading counts True RMS AC Current Accuracy Average AC counts 300 uA 0 01 uA 1 10 4 0 75 10 4 2 20 4 2 40 4 3000 uA 1 10 4 0 75 10 4 2 20 4 2 40 4 1 10 4 0 7596 10 4 2 20 4 2 40 4 0 75 10 4 0 75 10 4 1 Ranges available on the Fluke 867B only 2 Replace counts with Average AC counts for Average Responding AC measurements In 300 uA range floor count increases to 20 with battery eliminator Introduction and Specifications Specifications Conductance percent of reading counts oltage 300 00 nS 0 01 nS 0 5 20 3 2V Overload Protec
79. ion of the raw battery voltage This signal is monitored by the U25 microprocessor A D Converter The attenuation factor is 0 0909 1 with an output impedance of approximately 91 kQ BATT_TYPE Monitors an attenuation level of the battery charging voltage The attenuation ratio is 0 0901 1 with an output impedance of approximately 91 kQ If the measured voltage is greater than 11 volts the battery is assumed to be an alkaline cell Voltages 10 5 volts and below indicate that a Fluke BP7217 battery pack has been installed BATT_ELIM This is a contact on the battery eliminator input receptacle It is pulled to LINE with 5 kQ and tied to GND4 through 475Q forming a 10 51 1 divider If open voltage gt 1 0V a line powered battery eliminator has been installed If closed shorted to ground the battery eliminator is not plugged in or is not powered CONTRAST PWM signal from U25 The frequency is set at U25_SYSCLK CLOCK_DIVIDER x COUNTER LIMIT yielding 4 8 MHz 4 x 4096 equaling 293 Hz The PWM signal has 12 bit resolution which can vary the duty cycle from 0 to 100 IBL Current source generated by power supply used to run the LCD backlight Current source is controlled by the BACKLIGHT_ON control signal Typical current level is 80 mA This is the sourcing node derived from unregulated DC typically 6 0V 5 8V minimum Current return for IBL with approximately 1V burden POWER_DOWN Powers down the GMM Signal is generated by U25 This
80. least 16 hours to prevent continuous overcharging of the battery This circuit is reset each time a battery eliminator is plugged in via U34 R141 R140 and C91 A full charge of approximately 170 mA can only be provided to the battery if O1 Q2 and Q6 are turned on Q3 is off and O11 is off These states correspond to the GMM being connected to line but turned off and U32 not being timed out U32 is inhibited from advancing by CRS when power is on VR prevents 02 from turning on until the battery voltage rises above about 5 8 volts This prevents excessive power dissipation in Q22 with a dead battery or shorted cells Note The Fluke battery pack BP7217 uses an extra wire to allow charging current to flow If individual batteries are installed no connection is made and no charging current can flow 2 10 2 Theory of Operation Power Supply Functional Blocks sale S Da Ae BHS LV YO 1nd SAYA TWOP SRI Sel GO AN dl aro VOJIN OMINOO SE di SS spsive ETS i S 7 s Deg Ta e 2 Wn Fa ES S ssn tl m sep aupuzon le um EZO DAN Jaen umd DES ECH TAT Live Save E EN NO IH IDIOVA EOM so MNIS NINO ALH
81. lt 23 0 gt D lt 15 0 gt A9 107 1814 32 5 8 las aio 708 EU p lt 15 0 gt PI IBL i na A11 V A2 A12 c x 22 24 A13 R147 H FGM L SYSTEM ROM ala 2146 AO VPP v S A lt 23 0 gt D lt 15 Y c113 t LCD CONTROLLER EM 150 c TP11 6 E 5 VEE 10UF 6v x 22 4 SYSTEM ROM d SYSTEM RAK FLUKE 867 1001 Sheet 4 of 5 TESTPOINTS ARE 40 MIL SQUARE Figure 6 1 A1 Main PCA cont Schematic Diagrams a c90 P jui 10U F 220UF 3 35V 91 25V Mess cx ee g a RT U A i ST9430DY 20 V I vpn i s se VE wl BACKLIGHT T CR22 1 1 1 iy 1 Sek mer CURRENT SINK I A or Con d 1 80 MA i ui POK 1 sc yy get I 1 R106 T S 3 24K IBL giz _912 R73 y 4 U27 R
82. mA and 11A fuses The 440 mA fuse is accessible through the battery compartment and does not require GMM disassembly The IIA fuse resides on the opposite side of the GMM circuit and does require disassembly for access 3 9 Chapter 4 Perfomance Testing and Calibration Title Page 4 L troduction tick Gave tee o en et nee 4 3 4 2 Required Test Equipment sse sees eee ee 4 3 4 3 Alternative Test Equipment Fluke 5500A sss 4 3 4 4 gt Performance Tests eee eren bebo s dies 4 4 4 5 MVDC K ten LE ln ule prse tee 4 4 4 6 DC Xolts Testi te rh A pee Pere LE S AREE 4 6 4 7 Diode Test inm tite ec e e EINE 4 7 4 8 AC Volts Testi tee S Het NEN OR bees 4 8 4 9 Ohms and Conductance Tests 4 10 4 10 Capacitance Test uns aco e rete ER Ee ies tn 4 11 4 11 Frequency Test eee eee ree ese eene eria 4 12 4 12 Duty Cycle Lest nat dete uae ets ate duis bees 4 14 4 13 Logic Test 867B Only ss 4 15 4 14 AMPS SMS 4 16 4 15 Peak Hold a ST te ter teer et re e etna 4 19 4 16 Component Test 867B Only ss 4 19 4 17 Rel Test Touch Hold Tests sante menant 4 20 4 18 Glitch Capture Test noe a 4 2 4 19 External Trigger Test etai eret eere e eene 4 2 4 20 Calibration zubereitet ade beet 4 22 4 21 Measuring the System Resistance eee 4 22 4 22 Starting Calibration Mode on the GMM 4 22 4 23 KEREN EE 4 23 4 24 DC Volts Calibration ss 4 24 4 25 DC mAuA Calibration
83. ngle Shot 2 43 Single shot enables the user to capture a single event Either the single level or dual level trigger circuits can be used There are no circuit differences external to U30 Frequency Trigger 2 44 The trigger circuitry also provides transitions so that the digital ASIC can measure frequency The dual threshold trigger circuitry is normally used to provide transitions for frequency measurement the thresholds set for triggering also become the thresholds used for frequency measurement If the single threshold trigger has been selected the thresholds used for frequency measurement are fixed and are not related to the threshold used for triggering the waveform acquisition fixed levels applied to the dual level trigger circuitry establish the trigger thresholds for frequency measurement only Logic Activity Trigger 2 45 Transitions generated by the dual threshold trigger circuit are used by the digital ASIC to measure logic signal frequency DACI and DAC2 fix the trigger threshold voltages based on the type of logic TTL 3 V CMOS or 5V CMOS you select Peak Hold 2 46 The GMM displays the maximum and minimum readings acquired by the Fast A D Converter U10 when Peak Hold is activated While Peak Hold is active waveform displays are not available and measurements are limited to a band width of 1 MHz The Peak Hold filter R144 and C99 is switched into the signal path by analog switch U14 3 U14 4 U14 5 and U14 9 Au
84. oltage across the known resistor 867B 863 Service Manual mA uA 232 Milliamp and microamp measurements are connected at the mA pA and COM inputs For the 300 mA and 30 mA ranges input current flows through L9 F2 K1 4 K1 5 K1 6 R42 and R109 to COM The voltage developed across R42 and R109 is sensed through R151 by U16 For 3000 uA and 300 uA ranges input current flows through L9 F2 R49 R42 and R109 to COM The voltage developed across R49 R42 and R109 is sensed through R151 and R148 by U16 For DC current mA and uA voltage is sensed through R82 to U30 9 U30 routes this voltage to the active filter and the Slow A D Converter For AC current mA and uA the voltage is sensed though another switch of U16 and routed to the AC path Amps 2 33 Amps measurements are connected at the A and COM inputs The current flows through F1 and R109 to COM The voltage is sensed first though R42 then as described above for mA LA measurements Table 2 9 Amps Measurement Paths RS NNNM ETT 300 mA R42 R109 300 mV 2 18 Theory of Operation 2 Waveform Processing Waveform Processing 2 34 Overview 2 35 An input signal takes AC and DC paths With AC voltage or AC current functions the signal is sent directly to the Fast A D Converter for digitizing With DC voltage or DC current functions signals from the AC path and the DC path are recombined to form an AC DC signal This combined signal is then applied to the
85. omo mm E Hiri 8 9 6 10 11 fa 3 m 70 DI P 3 K 80 6 FERRITE ie ded 79 RANGE e e add D3 P1_3 BUE 78 SOFTKEYS a ela alo of a D4 P1_4 77 SOFTKEY 14 14 14 aye e a R164 DEE wins n5 P1_5 76 SOFTKEYS Kle kleklexkle La 18 2K e ZEZZZZ E D6 P1_6 75 SOFTKEY2 m n e MS Sei Se n FERRER E D7 P1_7 74 SOFTKEY1 i ss 7 D8 641P 73 DISPLAY SS Sne 1 JJ ae e L n9 H8 510 ER MIN MAX HIE n10 MICROPROCESSOR 71 FREEZE Ru R165 PTN78 TS D11 70 TOUCEHOLD 27 4K e PTN77 T6 TEIG n12 u25 1e BACK WAKE PTN76 18 TA noLDOFF D13 P5_3 FTOR3 68 CAL e 8 PTN75 Fa FR HZ D14 67 CONTRAST o PTN74 EE Q R67 R80 E Verona SS BELAY RELAY ds PINTS DACDATA lt 9 0 gt 200K 200K P5_0 FTOA1 65 X R167 e di DAC2 DAC1 AQ 45 3K PIN71 eo St TP10 TP8 vec vpn PTN70 A2 PA_7 FTCT2 63 LCD RST e 9 PINGS c79 Ac33 A3 PA_6 erro _62 DIC_RST Be Lj u PTN68 0 1UF 0 1UF AL o P4_5 FTCT1 61 RIC_RST u24 PTN67 CER CER AS E Sante A al P4_4 FTT1 _60 DIS_OFF R169 d DIC PTN66 25V 25V ne sadaa PEE L pala mo 32 BEEPER FREQ TETE a 90 9K DIGITAL CIRCUITRY PINGS A7 7 BEBRBE Z o PA_2 TMRT a MUN2111 1 PTN64 e sese Sesagcan fe JE n mer AVETE o les BEES EE Fe I PTN62 5 ADDATA lt 7 0 gt EPR sii te eee le I l SCH tat TT rer Crest Caen STS A92 mes dad yoo a L El RII L ranen E 2 bock 74K 7 T BACKLIGHT OR y PINSB VEE ON PTN57 POWER Down Y NON VOLATILE hd PTN56 AAA ERA BON ge MONZA R118 Si CS 33C116 vec 025 M p E2CS its ecl R 30 51 Glen JE R61 e
86. on Tot Qty Notes Designator C68 C69 C70 C73 C71 C94 C110 C72 C84 C95 C99 C100 C102 C103 107 C109 C111 C112 C114 116 C113 C117 C118 C120 C121 CR1 CR2 7 CR11 CR15 17 CR26 CR9 CR10 CR12 CR24 CR13 CR14 CR18 22 CR23 CR25 F1 F2 J1 K1 L1 L2 L5 L6 L3 L4 L7 L8 L9 LS1 MP1 CAP POLYPR 6800PF 5 50V CAP TA 68UF 10 10V 7343 CAP TA 100UF 20 10V 7343 CAP TA 1UF 20 35V 3528 CAP CER 0 01UF 10 50V X7R 0805 CAP AL 10UF 20 16V NP SOLV PROOF CAP POLYES 2200PF 10 50V CAP CER 150PF 5 50V C0G 0805 CAP CER 180PF 10 50V C0G 1206 CAP CER 270PF 1 50V C0G 0805 CAP CER 1000PF 10 50V C0G 1206 CAP CER 100PF 10 50V C0G 1206 CAP CER 1000PF 10 50V C0G 1206 CAP TA 10UF 20 6V 3216 CAP CER 47PF 5 50V C0G 0805 CAP TA 4 7UF 20 10V DIODE RECT BRIDGE BV 50V IO 1A DIODE SI BV 100 10 100MA DUAL SOT 23 DIODE SI BV 100 10 100MA DUAL SOT 23 DIODE SI SCHOTTKY DUAL 30V SOT 23 DIODE SI DUAL BV 50V 10 100MA SOT 23 DIODE SI 100 PIV 1 AMP SURFACE MOUNT DIODE SI SCHOTTKY DUAL 30V SOT 23 DIODE SI 20 PIV 1 0 AMP LED INFRA RED T1 950 NM DIODE SI SCHOTTKY 30V 200MA SOT 23 FUSE 406X1 5 11A 1000V FAST FUSE 406X1 375 0 440A 1000V FAST FILTER EMI 0 5MHZ TO 1GHZ 50 INPUT RECEPTACLE ASSEMBLY RELAY ARMATURE 2 FORM C 5VDC LATCH INDUCTOR 330UH 10 0 400ADC FERRITE CHIP 600 OHM 100 MHZ 1206 FERRITE CHIP 70 OHM 100 MHZ 1206 FERRITE CHIP 95 OHMS 100 MHZ 3612 AF TRANSD PIEZO 20MM 2
87. ower Requirements 4 4 1 3 Options Accessories and Related Equipment 1 4 Operating Instructonmg osi aeri eni aE e E o a 1 4 Obtaining RTE ione ele rr eet gde ee be ee EAE 1 4 Conventions Used in This Manual 1 5 Chapter Contents iden eee urnes te dirt se des 1 5 en Geer 1 6 Introduction and Specifications Introduction Introduction 1 1 This manual includes the following information Specifications Chapter 1 Theory of Operation Chapter 2 General Maintenance Chapter 3 Performance Testing and Calibration procedures Chapter 4 List of Replaceable Parts Chapter 5 Schematic Diagrams and component locators Chapter 6 The information in this manual is applicable to both the 867B and 863 models unless otherwise indicated Description 1 2 The Fluke 867B and 863 Graphical Multimeters GMMs provide full digital multimeter DMM capabilities along with graphical waveform displays and trend plotting Model 867B also provides component testing and logic activity testing Power Requirements 1 3 The GMM can be powered with the Battery Eliminator or with 6 AA ANSI NEDA L40 alkaline cells New alkaline batteries provide a minimum of 6 hours of continuous operation You can also use the NiCd battery pack Depending on battery condition a fully charged NiCd battery pack provides 8 hours typical or less of continuous operation Internal charging is available on Model 867B 1 1 3 867B 863 Ser
88. rements are connected at the VA and COM inputs The input signal goes through input protection resistors R99 and R20 and into U30 21 U30 routes the signal on to the combination circuit and the active filter For normal low impedance mode the 10 MQ resistor of Z5 is connected between the VO input and Ground 1 at U30 23 Ground 1 is connected to L8 and through R109 to COM For high impedance HiZ mode the 10 MQ resistor of Z5 is not connected to ground The 300 mV range uses the 300 mV Slow A D Converter range The 3000 mV range uses the 3V Slow A D Converter range Theory of Operation 2 Input Signal Conditioning Ohms 2 29 Ohms measurements are connected at the VO V and COM inputs A ratiometric measurement method is used the same current is sourced through the unknown resistor and a reference resistor The Slow A D Converter first integrates the voltage across the unknown resistor then deintegrates using the voltage across the reference resistor The source voltage of either 1 3V or 3V from U30 is applied to one of the range resistors in Z5 1 00 MQ 101 01 KQ 10 01 KQ or 1 00 kQ and the 10 MQ resistor of Z5 Current flows through the appropriate range resistor to S1 7 and S1 8 then through the protection resistors RT1 and R103 to VA For the 10 MQ resistor the current path is from U30 19 through the 10 MQ resistor to VO V The 30 MQ range uses the same range resistor as the 3 MQ range The 300 nS and 3000 nS ranges u
89. roceeding to the next test place the 5700A in Standby Table 4 5 AC Volts RMS Performance Test s wow somme sron fous Luss mew ss sron sens La s mew MEET TEE som La Use 10 00V 100 kHz with the Fluke 5500A Use 290V 20 kHz with the Fluke 5500A Table 4 6 AC Volts Average Performance Test 300 0 mV 290 00 mV 50 kHz 5700A 283 8 296 2 1000V 1000 00V 1 kHz 5700A 1019 Perfomance Testing and Calibration 4 Performance Tests L 5700A Calibrator DISPLAY MODE OUTPUT SENSE WAKE UP gt E ell CURRENT MA JA EXTTRIGCOM VQ os17f eps Figure 4 3 Configuration 6 AC Volts 867B 863 Service Manual Ohms and Conductance Tests 4 9 Rotate the GMM selector to Ohms Gin Connect the GMM and the 5700A in Configuration 5 Figure 4 4 Then perform the test steps in Table 4 7 for ohms and Table 4 8 for conductance Before proceeding to the next test place the 5700A in Standby Table 4 7 Ohms Performance Test see me it TOTO it Upper soon oom semer om fo Lane Taan sme rero EC Table 4 8 Conductance Performance Test 300 00 nS 10 00 MQ 5700A 99 30 100 70 3000 0 nS 1 0000 MQ 5700A 993 0 1007 0 Perfomance Testing and Calibration 4 Performance Tests E 6 5700A Calibrator FREEZE
90. se the same range resistors as the 3 MQ and 300 KQ ranges however the Slow A D Converter first integrates with the voltage across the reference resistor then deintegrates with the voltage across the unknown Table 2 8 Ohms Ratiometric Measurements Range Source V from U30 To 10 MQ U30 19 and Range Slow A D Converter Resistor Range Diode Test 2 30 Diode Tests are connected at the VO and COM inputs Auto Diode and Component Test use a similar measurement method An AC current at 3V is sourced from U1 through U30 12 The current goes through the 1 00 kQ resistor of Z5 through S1 7 and S1 8 through RT1 and R103 and out VO F The voltage is sensed back through the component test path an and into the Fast A D Converter The voltage is sensed through R99 and R20 S1 5 and S1 6 and U30 21 U30 routes the signal to the Slow A D Converter 3 V range used Software reads the Fast A D Converter U10 decides the polarity of the diode and displays the forward voltage Manual diode applies the 3V ohms source voltage from U30 across a 1 kQ resistor of Z5 and out VU Manual diode then uses the Slow A D Converter to measure the voltage at VO Capacitance 2 31 Capacitance and ohms measurements use a common circuit configuration As the capacitor is being charged the Slow A D Converter integrates the voltage across the known resistor When the integrating cycle stops the charging stops The Slow A D Converter deintegration uses the v
91. signal shuts the GMM off completely Pulled down to GND with 20 kQ PWR_RESET Signal generated by the power supply when the VCC power supply drops below 3 0 volts The reset lasts 100 milliseconds minimum If the selector is left in the OFF position or the GMM is powered down the PWR RESET signal restarts the 100 ms time out period This signal is pulled up to VCC by 10 KQ VEE_ON Control signal generated by U25 Turns the VEE power supply on and off Pulled down to ground by 100 KQ WAKEUP This signal is generated by both the rotary selector switch and the WAKEUP button Upon going LOW followed by a return to HIGH the GMM powers up In the OFF position this feature is overridden by the OFF switch 2 867B 863 Service Manual Power ON OFF Requirements 2 8 The GMM is turned off when the selector is rotated to OFF If the selector is immediately rotated beyond OFF the GMM does not turn off If the selector remains in OFF for 125 ms GMM software recognizes a valid OFF signal If the selector remains in the OFF position for more than 250 ms and an OFF signal is not generated a hardware timeout occurs and the GMM powers off The signal PWR_RESET goes true LOW immediately when a software OFF signal or hardware timeout is generated This action forces a complete restart sequence with PWR RESET remaining low for at least 100 ms After a software OFF signal has occurred turn the GMM on by rotating the selector to any function or
92. ssajous requires more cycles due to settling and processing time On the first cycle U30 is configured for voltage and the front end is allowed to settle On the next cycle the voltage scan data is acquired and stored in U24 During the third cycle the voltage data is read by the microprocessor U25 U30 is configured for current readings and the front end is again allowed to settle The fourth cycle is used for collection of the current data by U24 e In Touch Hold an additional two cycles are required to complete an open leads check 2 23 867B 863 Service Manual 2 24 Digital Circuitry 2 49 The H8 microprocessor U25 provides the core of the digital circuitry The processor fetches instructions from two 128k x8 ROMs U11 and U19 in 16 bit words A single 32k x8 RAM U20 provides system Read Write memory A serial 16k bit EEPROM U23 provides nonvolatile data storage setup information calibration constants and saved waveforms The keypad interfaces directly to the microprocessor through P2 pressing a key generates an interrupt The microprocessor determines which key is pressed by setting the interrupt pin as an output port and reading the port pins connected to the keypad The digital gate array U24 performs the following functions e Decodes addresses to select the device being addressed e Generates clock signals A 19 2 MHz oscillator is divided down to 9 6 MHz for the microprocessor 4 8 MHz for the Fast
93. t Fluke 863 Reflective Temperature Operating 0 C to 50 C See Figure 1 1 Storage 20 C to 60 C Batteries Removed Charging 0 to 45 C Temperature Coefficient 0 1 X Accuracy per C 0 C to 18 C and 28 C to 59 C Relative Humidity 0 to 90 non condensing Altitude Operating Non operating 6 562 ft 2 000 meters 40 000 ft 12 200 meters Input Impedance 10 MQ Shock and Vibration per MIL T 28800 class 3 sinusoidal non operating Dimensions 5 4 x 9 7 x 2 7 in 137 x 246 x 68 mm Weight 3 Ibs 1 35 kg Battery Operating Time backlight off or low Alkaline 8 hours typical NiCd 863 10 hours typical 867B 8 hours typical Battery Recharge Time 16 hours minimum from full discharge Drip Proof Case per IEC 529 IP 52 Drip Proof Safety Designed to meet IEC 1010 1 Category III UL3111 CSA C22 2 1010 1 92 CE and TUV requirements Certification C Electromagnetic Interference RF Emissions EN 50081 1 Commercial Limits VFG 243 1991 FCC Part 15 Class B RF Susceptibility EN 50082 1 Industrial Limits Introduction and Specifications Specifications 100 90 80 70 60 RH 50 40 30 20 10 0 20 to 20 Tan 60 80 100 120 140 4 32 A Temperature F SNA _ 20 0 030 40 50 60 Temperature C LL Storage 20 c 60 C lt o o Essen Normal Operation 0 C 50 C os1f eps Figure 1 1 Temperature and Humidity Power Fluke 867B Fluke 86
94. teries or a battery eliminator The GMM automatically detects power by source NiCd battery pack AA alkaline batteries or battery eliminator Diodes provide reverse polarity protection for the batteries The NiCd battery pack recharges in a minimum of 16 hours when the GMM is not operating or at a trickle rate while the GMM is operating Only cells in the Fluke BP7217 battery pack can be charged internally Internal charging is not available with Model 863 Caution Do not attempt to place other batteries in the BP7217 battery pack damage to the batteries could result A low battery indicator EY comes on when battery voltage drops below a preset voltage level This level is the same for all types of batteries remaining battery life can vary from minutes to hours depending on battery type ambient temperature and battery history A low battery power down can also occur No automatic power down occurs when the GMM is powered by the battery eliminator Refer to Chapter 1 for battery and battery eliminator specifications Power Supply Input Voltages 2 5 Refer to Table 2 1 Table 2 1 Power Supply Inputs fling 12 12 85 volts volts NiCd Battery Pack Fluke BP7217 6 10 volts 867B 2 8 hrs 863 10 hrs typical Alkaline Alkaline 6 AA AA 5540 volts 5 10 volts gt 8hrstypicat 8 hrs gt 8hrstypicat 2 Power Supply ve SO YOHOUNY DIG eat Jusuoduo9 os2f eps 2 5
95. tion 1000V rms Capacitance percent of reading counts 10000 pF 1 9 20 1000 uF 100 pF 1 9 2 10 00 uF 0 01 uF 1 9 2 100 0 uF 0 1 uF 1 9 2 1000 uF 1 9 2 10000 F 100 uF 10 900 Overload Protection 1000V rms 1 10 000 pF range last digit reads zero 2 10 000 uF range last two digits read zero 3 Using REL to zero internal offset Continuity Beeper Values Resistance percent of reading counts Range Resolution Accuracy Maximum Open Circuit Current Voltage 1 867B 863 Service Manual Frequency AC Sensitivity AC Volts AC Current Frequency Sine Wave Frequency Ranges Sine Wave Level Level 2 Hz 500 kHz 5 Hz 30 kHz 300 LA 300 mA 20 of range 500 kHz 1 MHz 100 mV rms 5 Hz 2 kHz 300 mA Use single trigger mode for inputs above 1 MHz Accuracy percent of reading counts 1000 00 Hz 0 01 Hz 0 05 2 10 0000 kHz 0 05 1 100 000 kHz 0 05 1 1 00000 MHz 0 05 1 2 0000 MHz 100 Hz 0 05 1 Duty Cycle Range 0 1 to 99 9 Accuracy 5 2 divided by the pulse width in microseconds 2 counts 1 ms 1000 microseconds Period Ranges 999 99 us 9 999 ms 99 99 ms and 999 ms Accuracy 0 05 of reading 2 counts Pulse Width Ranges 999 99 us 9 999 ms 99 99 ms and 999 ms Accuracy 5 2 divided by the pulse width in microseconds 2 counts 1 ms 1000 microseconds Logic Fluke 867B Only Trigger Levels Logic Famil
96. tmeter to one of the two test points mentioned above 2 Vary the trigger level associated with the DAC you are monitoring and look for a corresponding change in DAC level In order for the trigger output to be set high a signal must cross both thresholds therefore the hysteresis of the dual threshold trigger is adjustable Trigger slope can be adjusted by pressing 1 Single Trigger 2 40 The single trigger circuit uses a single level comparator with built in hysteresis The single trigger circuit and the dual trigger comparator use the same internal input signal TP19 The Ul DAC generates the required single threshold voltage for the comparator this voltage can range from 3 2V to 3 2V This range is derived from the DAC output current converted to a 3 2V to OV signal by the DAC amplifier U30 C35 and associated feedback resistor U1 and level shifted by a CT amplifier U30 R84 R58 and R129 Check the Single Trigger circuitry with the following procedure Rotate the selector to Component Test Check for a 3 2V peak to peak sine wave between VAF and COM Rotate the selector to Set Up Rotate the selector to AC Volts Monitor U30 4 and adjust the single trigger threshold level press and The voltage on U30 4 should change as the trigger level is adjusted Trigger slope can be selected by pressing 1 1 2 3 4 Select Single Trigger on the Set Up screen 5 6 External Trigger 2 41 The external trigger input
97. to Diode 2 47 In the Auto Diode the GMM displays the voltage drop across a diode and shows a picture indicating polarity encountered The Fast A D Converter records data that describes the waveform of the voltage across the diodes under test A waveform is not displayed to the user A software algorithm determines the polarity of the diodes The AC signal sourced to the input terminal is generated in the same manner as the AC signal used for the Component Test function Theory of Operation Component Test Test the auto diode circuit by placing a diode across the input terminals and viewing the input waveform to the Fast A D Converter TP19 A rectified waveform indicates that the analog circuit is working properly Component Test 2 48 Component Test graphs the current vs voltage relationship encountered when the test probes are placed across an unknown component All power in the circuit under test must be off to make this test Component Test uses the low impedance source path with a 3 2 volt frequency selectable sine wave oscillator to provide the voltage stimulus This stimulus signal is generated digitally on U24 and converted to an analog signal using a 10 bit current output DAC U1 Two op amps on U30 convert the current output of the DAC into a 6 4 volt peak to peak sine wave voltage at U30 4 U30 also provides a single pole low pass filter at 82 kHz to remove glitches on the DAC output The Component Test source is routed to th
98. ue as necessary Allow for settling then press Proceed DL 103 Me Step 15 Move the rotary switch to 0 Use input jacks o and Com Apply 2 3888 Ma Press Proceed when ready Meter SU Ze Modify K Re Abort Froceedivalue Last Cal os10s eps Figure 4 14 Ohms Calibration 4 29 Perfomance Testing and Calibration 4 Ohms nS Calibration AC Volts Calibration 4 30 1 Sam g M Rotate the selector knob to v VAC Remove the ohms connection and connect the 5700A to the VA and COM inputs on the GMM Step 24 Apply 1000 0V 1 kHz Allow for settling then press Proceed Step 25 Apply 100 00V 1 kHz Allow for settling then press 1 Proceed Step 26 Apply 290 00V 1 kHz Allow for settling then press 1__ Proceed Step 27 Apply 29 000V 1 kHz Allow for settling then press 1 Proceed Step 28 Apply 2 9000V 1 kHz Allow for settling then press Proceed Step 29 Apply 290 00 mV 1 kHz Allow for settling then press Proceed Step 30 Apply 29 00 mV 1 kHz Allow for settling then press Proceed Set the 5700A to Standby AC MALA Calibration 4 31 1 SOON UA g a Rotate the selector knob to Ta MANA Remove the ac connection and connect the 5700A to the mA pA and COM inputs on the GMM Step 31 Apply 290 00 mA 1 kHz Allow for settling then press Proceed Step 32 Apply 29 000 mA 1 kHz Allow for settling then press Proceed Step 33
99. vice Manual Table 1 1 Power Sources Battery Eliminator Operation Alkaline Battery Operation 6 AA ANSI NEDA L40 NiCd Battery Pack Operation with internal charging NiCd Battery Pack Operation with external charging Options Accessories and Related Equipment 1 4 Accessories supplied with Fluke 867B and 863 GMMs are listed in Table 1 2 Table 1 2 Accessories Included with Each GMM Battery Eliminator Operating Instructions 1 5 Operating instructions for the Fluke 867B and 863 Graphical Multimeters can be found in the Users Manual For ordering information see How to Obtain Parts in Chapter 5 Obtaining Service 1 6 A GMM under warranty will be promptly repaired or replaced at Fluke s option and returned at no charge See the registration card for warranty terms If the warranty has expired the GMM will be repaired and returned for a fixed fee Contact the nearest Service Center for information and prices A list of U S and International Service Centers is available on the World Wide Web at www fluke com Refer to Chapter 3 for a list of Fluke telephone numbers Introduction and Specifications Conventions Used in This Manual Conventions Used in This Manual 1 7 The following conventions are used in this manual GMM refers to all Graphical Multimeter models in the 860 Series 863 and 867B are specifically mentioned where a description does not apply to all models in the 860 S
100. ws current The maximum off state current draw is 100 LA CR21 and CR22 perform the power selection process 2 9 867B 863 Service Manual Boost Preregulator B 2 13 The boost preregulator outputs 15 volts from an input of 12 volts from the battery eliminator or 5 5 to 10 volts from the battery U27 provides this boost in conjunction with L1 CR20 and C3 If U27 is not functioning the voltage at the positive of C3 is approximately 0 4 volts below the voltage on C90 R114 provides peak current limiting to prevent rapid burnout of the boost circuit in the event of an overload Since R114 requires a functional U27 it does not provide complete protection R12 and R73 set the output voltage while the other discrete components provide timing and compensation for the regulator The output of this stage is delivered to the NiCd battery charger C and to the DC DC converter D R125 allows the charger and boost circuit to be tested independently of the rest of the GMM R125 is especially useful if a large load causes 15 volts at the cathode of CR20 Battery Charger C 2 14 The battery charger consists of the following two sections e 22 and its associated components provide a linear current source of either 170 mA or 40 mA to charge the NiCd battery Transistors Q1 Q2 Q3 Q6 and Q11 provide logic control of the charger state e The other part of the circuit is U32 and its associated components which provide a timeout of at
101. y 3V CMOS 1 7V 5V CMOS 2 8V 1 Frequency measurements will trigger on the logic family high levels All measurements are made using the Logic Ext Trig input jack 2 For frequency gt 1 MHz use full logic level Frequency Measurements 1000 00 Hz 0 01 Hz 2 0000 MHz 100 Hz 10 0000 MHz 100 Hz Accuracy 0 05 2 0 05 1 0 05 1 0 05 1 0 05 1 0 05 1 Introduction and Specifications Specifications 1 867B 863 Service Manual Component Test 7200 pF to 0 72 uF 18 75 kHz 77 pF to 7700 pF Peak Hold Captures peak minimums and maximums of signals 210 us Accuracy 5 of reading 30 counts MIN MAX AVG Accuracy add 8 counts to the number of counts in the accuracy table of the selected function View Mode Specifications Horizontal Specifications Sample Rate 4 8 Megasamples per second Sample per Division 20 per horizontal division Samples Captured 512 in Single Shot and Glitch Capture 256 all other modes Update Rate 4 times per second Time Base Modes Single Shot and Recurrent Ranges From 4 2 us per division to 5 seconds per division Trigger Types Internal and External Coupling AC DC and Glitch Capture External Trigger Impedance 1 MQ in parallel with lt 75 pF External Trigger Input Logic External Trigger Terminal External Trigger Level 5V adjustable in 10 steps Amplitude Specifications Amplitude Resolution 8 bits Frequency Response 3 dB
102. y press to select uA 100e Perform step 1 in Table 4 11 Press 4 Jagain to select mA 1e then perform step 2 Table 4 11 Frequency mApA Performance Test 1 1000 Hz 10 00 Hz 60 uA sine applied to 5700A 9 98 10 03 863 na mA uA input 300 uA range 2 10 kHz 10 000 kHz 3 mA sine applied to 5700A 9 994 10 006 863 na mA uA input 3000 uA range 4 12 Perfomance Testing and Calibration 4 Performance Tests Rel i Peak dB i Hold Average Po H H DISPLAY MODE Lom C PM 5139 function generator 0 1 mt 10MHz PHILIPS ZA IMA Nu oo A m i EXTTRIG COM VO M os18f eps Figure 4 5 Configuration 7 PM5139 867B 863 Service Manual Duty Cycle Test Rotate the GMM selector to AC Volts Check that Full Auto is selected in the display above 5 Select Hz and Duty Cycle Connect the GMM and the PM5139 in Configuration 10 Figure 4 6 and perform the test shown in Table 4 12 4 12 Table 4 12 Duty Cycle Performance Test AUTO 50 00 10 kHz 0 2V p p PM 5139 49 8 50 2 square PHILIPS os33f eps Figure 4 6 Configuration 10 PM513
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