Fluke 8050?, Instruction Manual

Page 1: ...P N 530907 October 1979 Rev 2 7 84 8050 Digital Multimeter Instruction Manual FLU...

Page 2: ...NC or nearest Service facility givi ng full details of the difficulty and include the model number type number and serial number On receipt of this information service data or shipping instructions wi...

Page 3: ...0 OPERATING TECHNIQUES 2 3 2 22 AC DC Voltage V 2 3 2 24 AC DC Current mA 3 2 26 Resistance fl 2 7 2 28 Conductance S 1 2 7 2 30 Diode Test 2 7 2 32 Relative RELATIVE 2 7 2 36 Decibel dB 2 11 2 38 INI...

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Page 6: ...dB Voltage Operation 2 11 2 10 Circuit Loading Error 2 13 2 11 Calculating Burden Voltage Error 2 14 2 12 Transistor Beta Test Fixture 2 15 2 13 dB Circuit Gain or Loss Measurements 2 17 2 14 Waveform...

Page 7: ...8050 Digital Muitimeter vi...

Page 8: ...polarity indication and overrange indication Protection from overloads and protection from transients of up to 6 kV 10 microseconds Dual slope integration d conversion to ensure noise free measuremen...

Page 9: ...Y MAXIMUM INPUT 1000V do or peak ac continuous less than 10 seconds duration on both the 200 mV and 2V ranges DC voltages can also be measured using the dB mode with 01 dB resolution between 5 of rang...

Page 10: ...on both the 200 mV and 2V ranges not to exceed the volt hertz product of 10 RESPONSE TIME 2 seconds maximum within range REFERENCE IMPEDANCES Sixteen user selectable impedance reference levels are pro...

Page 11: ...rward t0 back resistance The 2 k range is preferred and it marker with r diode symbol on the front panel of the instrument The three non diode test ranges will notturn on silicon junctions so in circu...

Page 12: ...and 28 C to 50 C 32 F to 64 4 F and 82 4 F to 122 F Operating Temperature 0 C to 50 C 32 F to 122 F Storage Temperature without batteries 40 C to 70 C 40 F to 158 F with batteries 40 C to 50 C 40 F to...

Page 13: ...INTRODUCTION SPECIFICATIONS 8 55 in 21 72 cm 7 50 in 19 05 cm 2 52 in 6 40 cm 10 65 in 27 05 cm 9 90 in 5 15 cm Figure 1 1 8050 Dimensions...

Page 14: ...at least three inches of shock absorbing mat rial all 1c L11C GULILdllICT 2 1 Remove the 8050 from the container and place it in convenient location To facilitate operation in different locations the...

Page 15: ...ecimal point is determined by the range selected for linear measurements The maximum measurement value that can be displayed is one count less than the Figure 2 1 Controls Indicators and Connectors ra...

Page 16: ...refer to the fuse replacement procedure in this section If measuring an unknown current set the DMM on the highest range then if needed select lower range ITEM NAME FUNCTION 1 Display 41 2 digit LCD d...

Page 17: ...E INDICATION 8050 IMPROPER SWITCH SETTING 8050 DISPLAY ANNUNCIATORS HIGH VOLTAGE 40 V dc or ac rms BEING MEASURED RELATIVE FUNCTION IN USE Position of decimal point dependent on range selected NOTE Th...

Page 18: ...E D TERMI NAL S OVERLOAD DC ALL RANGES 1000V do or peak ac V V k S or 20V 200V 750 V and 750V rms continous or 10 7 V Hz d COMMON AC 2V 200 mV 750V rms for no longer than 15 seconds or 107 V Hz DC mA...

Page 19: ...OPERATION AC 0C VOLTAGE CURRENT mA 1 SELECT RANGE 2 SELECT FUNCTION 3 CONNECT TEST LEADS 4 SREAKCIRCUIT 5 PLACE 8050 m SERIES 2 6 Figure 2 4 AC DC Current Operatlon...

Page 20: ...O BE MEASURE D 2 SELECT RANGE 3 SELECT FUNCTION 4 CONNECT TEST LEADS Figure 2 5 Resistance Operation 2 32 Relative RELATIVE OPERATIO N RELATIVE voltage sufficient to cau se si licon jun ction to con d...

Page 21: ...e reference was selected Setting the RELATIVE switch to OFF or turning the instrument off cancels the original relative reference 2 35 The relative function may be used with all measurement functions...

Page 22: ...TEST kf 1 DE ENERGIZE CI RCU IT TO BE MEASURED 2 SELECT R ange 2 range preferred 3 SELECT FUNCTION 4 CONNECT TEST LEADS HIGH LOW ti 3 ss i i 4crom Figure 2 7 Diode Test Operation OPERATION DIODE TEST...

Page 23: ...leads and take the desired measurement to be used as the relative reference While taking the relative reference measurement set the RELATIVE switch to ON This will store the value as the relative ref...

Page 24: ...the factory to tu rn on with default reference impedance of 600 The power up default reference impedance may be changed to any of t he 16 stored impedances Refer to Section 4 for information on how to...

Page 25: ...tor should appear in t he disp lay 13 Select the d B functio n then push the REF right most range switch The turn on d13 reference value nominally 600 should appear on the display for approximately th...

Page 26: ...10 to calculate the percentage of error 2 51 Current Measurement 2 52 The following paragraphs contain additional information on and measurement techniques for current measurements WARNING OPERATION...

Page 27: ...ds together firmly and set the RELATIVE switch to ON 3 Disengage the test leads and proceed with low level resistance measurements The resistance of the test leads will be subtracted from the readings...

Page 28: ...LE SWITCH SPDT WI RE TO BASE CONTACT OF TRANSISTOR SOCKET Defective transistors shorted or open Collector to emitter leakage ICES Beta from 10 to in single range 2 73 Transistor type is determined by...

Page 29: ...rms is defined as the square root of the mean of the squares of the instantaneous voltages In physical terms rms is equivalent to the do value that dissipates the same amount of heat in a resistor as...

Page 30: ...ignificantly on the next higher Figure 2 13 dB Circuit Gain or Loss Measurements OPERATIO N AC VOLTAGE CURRENT MEASUREMENT 2 3 Using the dB function on the 8050 measure th e voltage at 1 or intended r...

Page 31: ...0 1 000 0 f RECTI F I ED SI NE FULL WAVE 1 414 1 414 0 421 0 436 0 900 1 000 0 RECTI F I ED SI NE HALF WAVE 2 000 2 000 0 779 0 771 0 636 1 000 0 SQUARE 0 2 000 1 000 1 111 1 000 0 000 1 000 RECTI F I...

Page 32: ...RELATIVE functions can be used together to measure the frequency response bandwidth an ac circuit Use the following procedure to measure the bandwidth of an amplifier Connect the amplifier signal gene...

Page 33: ...lifier Bandwidth technique for measuring the bandwidth of circuit to find the Q of single tuned circuit _ Resonant Frequency Q 2 Bandwidth LOAD f fc f Bandwi dth BW 8050 O PERATION AC VOLTAGE CURRENT...

Page 34: ...3 Theory of Operation paragraphs discuss the actual d conversion in more detail 3 9 The microcomputer controls the d converter via C MOS switches Figure 3 2 shows the simplified circuits formed durin...

Page 35: ...16 The d reference scheme is different if either the k or S functions are selected When the 2 mS 200 or2 k range is selected flyingcapacitor C7 is charged during the Autozero period by the voltage dro...

Page 36: ...THEORY OF OPERATION CIRCUIT DESCRIPTION Figure 3 1 8050 Functional Block Diagram 3 3 J CL 1 2 Ln CIO j LLJ 0 z z z J _ F z _ F LL 3 D w CC F 1 06...

Page 37: ...TAGE INPUT DI V ID ER V mA REFERENCE VOLTAG E 1 V VR 1 0198 k S AZ U18D AZ A AUTOZERO C9 OFFSET VO LTAGES AN D BIAS FOR BUFFER ANDINTEGRATOR I NTEG RATE I NPUT FROM SIGNAL CONDITIONERS RANGE AND C R E...

Page 38: ...MICROCO MPUTER ACCUMU LATED COUNT 1 READ DE R J 1 OL OVERRAN GE R EAD OVERR ANGE AUTOZERO Figure 3 3 D Converter Wavetorms THEORY OF OPERATIO N CIRCUIT DESC RIPTION 3 5...

Page 39: ...verter If the AC DCswitch is in the DC position the output of the divider network is routed directly to the d converter If the k switch is 3 6 Figure 3 4 Microcomputer Simplified Block Diagram selecte...

Page 40: ...CS mA m R 17 TRUE RMS R18 CONVERTE R C6 R AN G E SWITC HES U6 U6 COM CURRENT MEASUREMENTS 0 2D OHMS VOLTAG E V tREF VH R REF 2F U18C J mh SOURCE VL 0 2 U88 f C7 2 _ VR T1 R2 Rz1 D BUFFER C7 U7A Q19 D...

Page 41: ...of two thereby accommodating waveforms with crest factors up to 3 at full scale 3 36 HYBRID TRUE RM S CONVERTER 3 37 An rms amplitude is the value of alternating voltage that results in the same powe...

Page 42: ...ilog log 71 2 antilog 2 log Vi log Vrms Vrms V ms FROM MICR OCOMPUTER GAI N CONTROL 1 10 100 ABSOLUT E VALUE CI RCUIT Figure 3 RMS Converter TO D CO NVER TER Vrms LOG CONVERT ER t2 log Vi log Vrms 2 L...

Page 43: ...be da m aged by electrostatic discharge during hand li ng This notice explains how you can minim ize the chances of destroyi ng such d evices by 1 Kn owing that there is problem 2 Learn ing the g uid...

Page 44: ...ONLY AT A STATIC FREE WORK STATION 9 ONLY ANTI STATIC TYPE SOLDER SUCKERS SHOULD BE USE D 10 O NLY GROUNDED TIP SO LD ERI NG I RONS SHOULD BE USED Anti static bags for storing S S devices or pcbs wit...

Page 45: ...to the purchaser For in warranty repair call toll free 800 426 0361 for the address ofthe nearest Fluke Technical Service Center In Alaska Hawaii Washington or Canada call 206 356 5400 toll call Ship...

Page 46: ...procedure 2 Refer to Figure 41 Turn the instrument over and remove the indicated screws 3 The LCD POWER switch and RELATIVE switch are mounted on the Display PCB Assembly Gently push on the LCD and P...

Page 47: ...ly Complete the Display PCB Access procedure Remove the two screws located on the foil side of the Display PCB Assembly F 11 0 rilraTilinji 0 0 00 0 000 00 0 e oj 3 0 0 9 Ili o n 41 6 0000 Toc C2 C1 R...

Page 48: ...ble 4 2 dB Impedance Selection Diode Type Use Fluke P N 203323 ON4448 1N914 or equ ivalent 4 4 4 23 Use the following procedure to change the ac line voltage configuration on the 8050 1 Complete the C...

Page 49: ...e POWER switch to ON and allow the 8050 to stabilize for approximately5 minutes Conduct the tests in an environment with an ambient temperature of 23 t 50 C 73 t 90 F and relative humidity of less tha...

Page 50: ...the DM M Calibrator to the 8050 as follows to the V k S input connector and LO to the COMMON input connector 4 For each step in Table 4 5 adjust the DMM Calibrator to the required 8050 voltage input...

Page 51: ...ge Ta ble 4 5 d8 Voltage Test 5 Adjust the DMM Calibrator for an output 19 000 mA at frequency of I OOHz 6 Verify that the display reads between 18 800 and 19 200 7 This concludes the Current Test Rem...

Page 52: ...ower from the DMM Calibrator before dismantling the test setup 4 46 AC Calibration 4 47 Use the following procedure to perform an AC Calibration 1 Connect the DMM Calibrator to the 8050A as follows to...

Page 53: ...MAINTENANCE CALIBRATION ADJUSTMENTS Figure 42 Calibration Adjustment Locations 49...

Page 54: ...put connector 6 Adjust the DMM Calibrator for I 0000V ac rms at 200 7 Turn on the DMM Calibrator 8 Compare the 8050 display to the DISPLAY READING columns in Table 4 11 and find which LOW and HIGH val...

Page 55: ...D FROM REAR OF 8050 1 1 1 1 1 JUMPER I NSTALLED SELECTABLE JUMPER CONFIGUR ATION FOR DC CALI BRATION VOLTAGE REFERENCE VR 1 CALI BRATION NETWORK U5 3 Connect the DMM Calibrator to the 8050 as follows...

Page 56: ...VE CIRCUITS AND USE AN I NSULATED TOOL FOR ALL ADJUSTMENTS SET POWER TO OFF BEFORE REPLACI NG ANY COM PONENT OR DEVICE 4 58 The following information is provided to help isolate faults and direct the...

Page 57: ...ION 1 COMMO N 8 D Converter In tegrato r Output 2 13V 9 Fi rst AC Buffer Output 3 or CR 12 Cathode 6 V 10 Second AC Buffer Outpu t 4 5V 11 RMS Converter Output 5 10V 12 Display B ack Plane Drive 50 Hz...

Page 58: ...ion Constant overrange in DC V D Check 6 7 and 8 for proper waveforms U18 U 19 U20 Does not respond to input voltages R2 open D input Does not range properly in AC V U17 U31 U 22 07 Q8 dB VOLTAGE TEST...

Page 59: ...st of Replaceable Parts ASSEMBLY NAME DRAWING TABLE PAGE FIG URE PAGE Final Assembly 8050 0 3 5 1 5 3 5 1 5 4 Al Main PCB Assembly 5 2 5 5 5 2 5 9 Federal Supply Codes for Manufacturers 5 3 5 12 Fluke...

Page 60: ...C RIP reference designators Each assembly is accompanied by heading an illustration showing the part location and its reference designator 3 Reference Designator 5 3 PARTS ORDERI NG INFORMATION 4 Quan...

Page 61: ...325327 1 8 CONNECTOR ELASTO ERIC 453092 89536 453092 1 9 FUSE HUM ASSEMBLY 316039 89536 316039 1 7 ORDER FUSE CAP ONLYs SEE 1 11012 10 INSERT SILICONE 323139 89536 325139 2 tIP11 INSULATOR 493044 8933...

Page 62: ...LIST OF REPLACEABLE PARTS 5 4 Figure 5 1 8050 Final Assembly...

Page 63: ...CAUTION C R ITATIC ELECTRICITY BE ZEL SECTION E 000000000 Q0 tj 5 4 2 3 6 14 21 4 FRONT VI EW 11 19 SIDE VI EW 8050 4001 Figure 5 1 8050 Final Assembly cont LIST OF REPLACEABLE PARTS 5 5...

Page 64: ...LIST OF REPLACEABLE PARTS Figure 5 1 8050 Final Assembly cont S 1 J S7 i...

Page 65: ...162008 73445 C280 47 REF C32 CAP CERAMIC 1000 PF 10 500V 357806 56289 C016 13102G 1021 3 C3 3 CAP TA 10 tF 20 15 193623 56289 196D106 0015 1 REF C3 5 CAP CERAMIC 1000 PF 10 500V 357806 56289 C0168102G...

Page 66: ...1315 5 1 4W 348854 80031 CR251 4 5 15 REF R39 RES L FILA 232 1 1 8 276618 91637 Q1F552323 1 R40 RES DEP CAR 680 SX 1 4W 368779 80031 CR 10405P680E 1 R42 RES DEP CAR 27 3 1 4 441501 80031 C 1 4 5 27 1...

Page 67: ...ED 8050 4506 515999 89536 515999 1 1 U19 IC SELECTED 8050 4506 01 516005 895 6 516005 2 1 U20 IC SELECTED 8050 4506 01 516005 89536 516005 RE F U21 IC OPERATIONAL AMP 8050 4504 609883 89536 609883 1 U...

Page 68: ...LIST OF REPLAC EABLE P AR TS CA U TION SUBJECT TO DAMAGE BY STATIC E LECTRICITY PL F IT Ma F V ss PACT Rv 51 I NOT MW s V 21 RV 8050 1601 5 1 0 Figure 5 2 8050 1 Main PCB Assembly...

Page 69: ...r 1 V C Figure 5 2 8050 1 Main PCB Assembly cont LIST OF REPLACEABLE PARTS 8050 1601 5 1 1...

Page 70: ...31 Mapco 07263 Fairchild Semiconductor Div of Sessions Clock Co Div 1 Fairchild Camera 52072 Circuit Assembly Corp Morristown New Jersey Instrument Corp Costa Mesa California Mountain View California...

Page 71: ...852 Introniea Chile Ltd New Delhi India 110 017 El tronicas S A 301 770 1578 Casilla 16228 Tel 819118 Avda Franklin D Roosevelt 105 NJ aramus Santiago 9 Chile Israel Lima 1 Peru Fluke Technical Center...

Page 72: ...ing Kit 600 3 80T Touch Hold Probe 00 4 80T 150C Temperature Probe C 600 5 80T 150 F Temperature Probe F 600 5 80i 600 Current Transformer 600 5 80J 10 Current Shunt 600 5 80 6 High Voltage Probe 600...

Page 73: ...sories Figure 600 1 Model 8205 Carrying Case Accessories 600 5 RUGGEDIZED CARRYING CASE C86 600 6 The M odel C86 Ruggedized Carrying Case shown in Figure 600 2 is molded polyethylene carrying case des...

Page 74: ...n Figure 600 3 and secure them to the mounting panel using the nuts provided 4 Insert the front of the case through the opening on the back side of the mounting panel 5 Install the handle mounting scr...

Page 75: ...into t he handle mounting bosses Don t overtighten t hese screws 9 S lide the instruments through the mounting panel and into their cases I nstall and tighten the retaining screw at the rear of both...

Page 76: ...suring potentially dangerous voltages 600 31 RF Probe 83RF 600 32 The 83RF converts the 8050 into high frequency 100 kHz to 100 MHz ac voltmeter over 600 4 voltage range o f0 25V to 30V rms The DC out...

Page 77: ...ACCESSORIES PROBE ACCESSORIES TOUCH HOLD PROBE 8133 TEST LEAD SETS T EMPERATURE PROBES HIGH FREQUENCY PROBES 80 40 CURRENT MEASUREMENT DEVICES HIGH VOLTAGE PROBES Figure 600 5 Probe Accessories 600 5...

Page 78: ...Withstand Voltage 5 kV MaxImum Conductor Size 2 inch diameter 80J 10 CURRENT SHUNT Shunt 10 amps at 100 mV Accuracy 18 C to 28 C DC TO 10 KHZ 0 25 10 KHZ 100 KHZ R ising to 1 dB at 100 kHz typical Tem...

Page 79: ...E 0 SV 0 5 dB BELOW 0 5V 1 0 dB Frequency Response Relative to 1 MHz 100 kHz to 100 MHz 5 dB 100 MHz to200MHz 1 0dB 200 MHz to 500 MHz 3 0 dB Referred to high and low inputs at probe tip Extended Freq...

Page 80: ...42V do or 30V ac Aperture Size 3 4 inch 19 mm diameter Size Overall 9 4 1 2 1 7 16 230 mm 115 37 mm Weight 14 ounces 0 4 kg with batteries Power Four AA cells Battery Life Alkaline 20 hours continuou...

Page 81: ...easurements before recharging set the POWER switch to the OFF position for couple of minutes then set the POWER switch back to the ON position If the BT annunciator does not appear immediately you hav...

Page 82: ...rocedure given in Section 4 of this manual 2 F3 is located immediately in front of the power receptac le For 100V and 120V instruments replace F3 with 1 16 250V type MDL fuse b For 240V instruments re...

Page 83: ...426759 6 7 DECAL CSA 525527 89536 525327 1 CDHhECTOR ELASTOMERIC 453092 89536 453092 1 9 FUSE HOLDER ASSEMBLY 316039 89536 516039 1 TO ORDER FUSE HOLDER CAP ONLY SEE 12 FOR EUROPEAN USAGE USE 537076...

Page 84: ...OPTIONS RE CHARGEABLE BATTERY 01 OPTION 601 4 Figure 601 1 80 01 Final Assembly...

Page 85: ...Bezel Section 3 6 SIDE VIEW 4 M P4 MP8 MP5 FR ONT VIEW Figure 01 1 805 01 Final Assembly cont OPTIO NS RECHARGEABLE BATTERY 01 OPTION 1 2 80SOA 4011 601 5...

Page 86: ...OPTIONS RECHARGEABLE BATTERY 01 OPTION CAUTION SUBJECT TO DAMAGE BY STATIC ELECTRICITY 601 6 Figure 601 1 8050 01 Final Assembly cont...

Page 87: ...73445 C280r REF C32 CAP CERAMIC 1000 PF 10 500V 357806 56289 C0168102G 102 3 3 CAP TA 10 LF 20 13V 193623 56289 196D106 0015 1 REF 4 CAP EL ECT 47 I F 10 75 16V 436006 89536 436006 1 C35 CAP CERAMIC...

Page 88: ...R23 RES 00 CAR 100 SX 114W 348771 80031 CR251 4 W100 2 R24 RES C0rF 4 7 5 114 220046 01121 84755 4 R25 RES DEP CAR 12 5 1 4 442178 80031 CR251 4 5 2 1 R26 RES DEP CAR 9 1 5 1 4 441303 80031 C 25 4 5...

Page 89: ...4 SEGMENT 453225 02735 4054 REF U120 IC C MOS LIQUID CRYSTA L DSPLY DRIVERS 507376 02735 CD4056 4 1 U130 IC C MOS LIQU ID CRYSTAL OSPLY DRIVERS 507376 02735 40568 REF U140 IC C f1OS LIQUID CRYSTAL DSP...

Page 90: ...OPTIONS RECHARGEABLE BATTERY 01 OPTION 601 10 Figure 601 2 1 Main PCB Assembly 8050 01...

Page 91: ...OPTIONS RECHARGEABLE BATTERY 01 OPTION Figure 01 2 1 Main PCB Assembly 8050 01 cont 601 1 1 601 12...

Page 92: ...BLE OF CONTENTS Section 7 Schematic Diagrams FIGURE 7 1 TITLE Mnemonics PAGE 7 2 7 2 Main PC B Assembly Line Supply 7 3 7 3 1 Main PCB Assembly Schematic 7 4 7 4 Main PCB Assembly Battery Option 01 7...

Page 93: ...nction i nputs to microcomputer Fc Fd HOLD 52 sec maximum period immed iately following HV High Voltage comes on when the instrument measures 40V or greater INT Integrate LCD Liqu id Crystal Display L...

Page 94: ...CAUTION SUBJECT TO DAMAGE BY STATIC ELECTRICITY Is r R2 9 L _ 3 v Nor ow...

Page 95: ...FOR SCHEMATIC DIAGRAM SEE FIGURE 7 3 SCHEMATIC DIAGRAMS 8050 1601 Figure 7 2 1 Main PCB Assembly Line Supply 7 3...

Page 96: ...C d 5 S C L G CO MMOU CAUTION SUBJECT To DA M AGE BY STATIC ELECT RICITY z 11 20 J J 6 Jl JI F J J I JI 8 J 3 J 2 J f JI AC U27 230 r 44 F3 ED 9 2 12 FOR LI NE VERSION COMPONl1 FOR 01 BATTER Y OPTION...

Page 97: ...t6 4 56 5 00 T 9 6 2 U26 JJ 4 27 7 r JHS SBA R25 26 2 k G c LVA LI NE SUPPLY 73 5 4 POWER VR2 5 6 2 C21 2 d8 HV REL R22 U24 Jts s vor s F d 6 1 470 OW ENT LOCATIONS S EE F IG URE 5 2 OR 7 2 LOCATIONS...

Page 98: ...CAUTION SUBJECT TO DAMAGE BY STATIC ELECTRICITY RI R8 2209 2W...

Page 99: ...33 2S 20 R7 6 2 ANALOG SENS E GRO UN D ANA LOG SIGNAL GROUN D POWER SUPPLY DIGITAL GROUN D L 9VAC 00 U32 6 2 5 1 C41 6 5F C38 4711 _5 R31 SWITCH V I EWE D FR OM Q14 6 16 6 U3 20 SCHEMATIC DIAGRAMS 56F...

Page 100: ...CAUTION SUBJE CT TO DAMAGE BY STATIC E LE CTRICITY c 01t 5 EliC c 2 AM...

Page 101: ...SCHEMATIC DIAGRAMS FOR SCHEMATIC DIAG RAM SEE FIGURE 7 3 re 7 4 1 Main PCB Assembly Battery Option 01 8050 1611...