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HP 3400B, User'S And Service Manual

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HP 3400B User'S And Service Manual Download Page 40

Theory of Operation 

This chapter is organized to provide descriptions of the circuitry 

contained on each schematic shown in chapter 7. A block diagram 

overview is provided followed by more detailed descriptions of the 

circuitry contained in the schematics chapter. 

• 

Block Diagram  39 

• 

Input Attenuator  4 1  

• 

Impedance Converter 

4 1  

• 

Post Attenuator  42 

• 

Wideband Amplifier  42 

• 

Chopper Op Amp 

I 

Thermocouple Pair  43 

• 

Power Supplies  44 

• 

Switch Board  45 

38 

• 

• 

• 

• 

• 

• 

• 

• 

• 

Summary of Contents for 3400B

Page 1: ... OTS LIBRARY III I I II ml llm 2400001027 S LIBRARY OT eHP 3400B RMS Voltmeter User and Service Guide ...

Page 2: ... traceable to the United supplied products or contained herein or or damage to equipment or States National Institute interfacing unauthorized incidental or consequential permanent loss of data of Standards and Technol modification or misuse damages in connection OIY formerly National operation outside ofthe with the furnishing per Bureau of Standards to environmental specifica ormanoe or use o th...

Page 3: ...es 1 mv to 300 V or decibel ranges 72 dBm to 52 dBm A dc output is provided on the rear panel which is proportional to the front panel meter reading By using this voltage to drive auxiliary equipment you can use the voltmeter as an RMS ac to dc converter Suitable for bench use or can be rack mounted using the available combining case or adapter frame accessories The HP 3400B is a form fit and func...

Page 4: ...The Front Panel at a Glance VOLTS 1 Direct raadlng meter RMS volts and dB 2 Zero adjusb nent screw 2 3 Input BNC connector 4 Range selectorswitch volts and dB ...

Page 5: ...QR 10 1 fvl Scalf n3HEWU TT r PACKARD 1 Power line lus holderassembly 2 Power line voltage setting Un l00 240V 125m T 3 DC outputjack Provides 1 Vdc output t full scale deflection output Is proportional to dellectlon souroa impedance Is 1 kO 3 ...

Page 6: ...o2MHz 2 2MHzto3MHz 3MHzto20 MHz 5 NoIe The volmeter may showazero offset wllh no voltage appnedto the InPtntannlRaJ 4 emf hclor OCtnpul ReapCOt_ Tlme OCOulpul Oulpul_ Power Wolgh1 SIze 1 mV to 300 mV ranges 10 Mn ehunted by 50 pF 1 V to300V ranges 10 MO shunted by 20pF I Rallo peak o RMS amplitude 10 1 allull scale except where IIm ad by maxtmum I and m Y __ to meterdaUectlon e g 20 1 BI haIf scaJ...

Page 7: ...en qualifW Warning For continued f e protection use specified fuse only Avertissement Pour maintenir la capacite de protection contre l incendie utilisez Ie fusible recommande seulement Warning For protection from electrical shock hazard power cord ground must not be defeated Avertissement Pour ne pas compromettre la protection contre Ie choc electrique ne pas couper le circuit de continuite de 11...

Page 8: ...adjustment procedures Theory of Operation Chapter 3 describes each functional block in the voltmeter Service Chapter 4 provides guidelines for returning your voltmeter to Hewlett Packard for servicing ie Replaceable Parts Chapter 5 contains a detailed parts list for the voltmeter Backdating Chapter 6 describes the procedures involved with back issues ofthis manual Schematics Chapter 7 provides the...

Page 9: ...rations 20 Operation Verification Procedures 21 Performance Verification Procedures 22 Adjustment Procedures 28 Test Connector Pinout 36 Chapter 3 Theory of Operation Block Diagram 39 Input Attenuator 41 Impedance Converter 41 Post Attenuator 42 Wideband Amplifier 42 Chopper Op Amp I Thermocouple Pair 43 Power Supplies 44 Switch Board 45 Chapter 4 Service Operating Checklist 49 To Replace the Powe...

Page 10: ...odes 03400 66522 and 03400 66523 59 Replaceable Parts HP 340DB Mainframe 60 Manufacturer s Codes HP 340DB Mainframe 62 Chapter 6 Backdating 63 Chapter 7 Schematics Mechanical Disassembly 67 Component Locator Diagrams 68 Input Attenuator Impedance Converter and Power Supplies 69 Relay Drivers and Post Attenuator 70 Wideband Amplifier Chopper Op Amp and Overload Detector 71 Switch Board Schematic 72...

Page 11: ... 1 1 Quick Start 1 ...

Page 12: ... you will want to do with your voltmeter is to become acquainted with its front panel We have written the exercises in this chapter to prepare the voltmeter for use and help you get familiar with some of its front panel operations 10 i J ...

Page 13: ...e voltage waspreset at the factory to the proper value for your location Change the voltage setting ifit is not correct see page 12 A 125 rnA fuse isinstalled when the voltmeter is shipped from the factory This is the oorrect power line fuse for 100 120 220 or 240 Vac operation Connect the power cord and turn on the voltmeter The fr ont panel Power indicator will light up when you turnon the voltm...

Page 14: ...m the rear panel s m J 3 Rotate the line voltage selector until the correct voltage appears in the window 00 20 220 or 240 Vae 2 Remove the line voltage selector from the assembly 4 Replace the fuse holder assembly in the rear panel Verify that the correct line voltage appears I n thewindow 12 ...

Page 15: ...a de voltage will damage the voltmeter s input circuitry VOLTS iii HIIW OTT AD 0 RANGE ID Selectthe 300 Vrangefirst 0 11 11 and then adjustthe range until the mete reads In the uppertwo thirds of the scale NS VOU II I U 0 Zero Adjusbnent 20 03 0 10 20 Screw 01 30 3 0 00 100 00 001 300 12 ranges available Note The voltmetermayshow a zero offset with 1W voltage opplied to the input terminal Note Ift...

Page 16: ...l to the RMS input voltage 1 Vdc corresponds to a full scale meter deflection On the 3 s ranges 0 003 0 03 0 3 3 etc the full scale output is 0 9487 Vdc A plwneplug for the DC outputjack is available by orderiTllf HPpart number 1251 0067 14 ACClJIt CI rull xalt e CllESI f t C1011 I liI HOWUITT MCICAAD 2 UM OO llOV tlO 20 240 1 1 10 018 440 IQ 0 2OY4 Wo UM l00 2 OV 125mAT WARNING _ ___ I00l00 _ Em ...

Page 17: ...he voltmeter from the cabinet the combining case is recommended You can also use the combining case on the bench to mount the voltmeter with other HP System I instruments The rack adapterframe is recommended for permanent or semi permanent rack mounting applications Remove thefront and rearf eet before mounting the voUmeter in the combining case or rack adapterframe To remove the feet press down o...

Page 18: ...uick Start To rack mountthe voltmeter _ 0 _ _ I _It to 0 0 To use the combining case order part number HP 1052A and rack mount kit 5060 8741 m 0 D 0 To use the rack adapter frame order part number HP 5060 8762 16 ...

Page 19: ... 10 0 __ 2 Calibration Procedures 2 ...

Page 20: ...rocedures 28 Test Connector Pinout 36 The verification tests use the voltmeter s specifications listed in Specifications on page 4 The information in this chapter is for service trained personnel who are familiar with electronic circuitry and are aware of the hazards involved To avoid personal injury or damage to the instrument do not perform procedures in this chapter or do any servicing unless y...

Page 21: ...ation interval This will increase your confidence that the HP 3400B will remain within specification for the next calibration interval This criteria for re adjustment provides the best measure of the voltmeter s long term stability Performance data measured using this method can easily be used to extend future calibration intervals When your voltmeter is due for calibration contact your local Hewl...

Page 22: ...page 28 None Full Scale GaIn Adjuslment page 29 Fluko 5700A caJlbrator HP 3458A Multimelar Tenth Scale Galn Adjuslment _ 30 Fluke 5700A calibrator HP 3458A Multimetar Full Scale Poinlar Adjustment page 32 None 20 MHz Flatness Adjuslmant page 33 Fluke5700A calibrator HP 3458A Multimeter Input AltenuatorAdjustment page 34 Fluke 5700AcaJibrator HP 3458A Multimetar Test Considerations To ensure proper...

Page 23: ...ar panel dc output jack This voltage is normalized to 1 Vdc and is proportional to the RMS input voltage 1 Vdc corresponds to a full scale meter deflection HP 34008 Calibrator Calibrator DC Outpul Range Output Voltage Output Frequency DMM Reading 1 V 1 V 10 Hz 1 05 V to 95 V 1 V 1 V so Hz 1 0075 V to 9925 V 1 V 1 V 1 MHz 1 0075 V to 9925 V 1 V 1 V 2 MHz l 02 V to 98 V 1 V 1 V 3 MHz 1 03 V to 97 V ...

Page 24: ...up for 30 minutes with the covers in place before attempting any performance checks RangeIFrequency Response Check This test verifies the voltmeter s frequency response on all 12 input voltage ranges The test is performed both at full scale and tenth scale input levels The signal measured for this test is a de voltage taken at the rear panel dc outputjack On the I s ranges 0 001 0 01 0 1 I etc thi...

Page 25: ...03 V 1 kHz 0 9558 V to 0 94 16 V 0 01 V 0 Q 1 V 1 kHz 1 00 75 V to O 9925V 0 03 V 0 03V 1 kHz 0 9 558 V to 0 94 16 V 0 1 V 0 1 V 1 kHz 1 00 75 V to O 9925V 0 3 V 0 3 V 1 kHz 0 9558 V to 0 94 16 V 1 V I V 10 Hz 1 05 V to 0 95 V 1 V I V 50 Hz 1 00 75 V to 0 9925 V 1 V I V 1 kHz 1 00 75 V to 0 9925 V 1 V 1 V 10 kHz 1 00 75 V to 0 9925 V 1 V 1 V 100 kHz 1 00 75 V to 0 9925 V 1 V 1 V 1 MHz 1 00 75 V to...

Page 26: ... within the limits shown in the table below 1 Continue checking the de output as you adjust the calibrator s output voltage and frequency to each of the remaining values shown in the table below HP 3400B calibrator calibrator DC Output Range Output Vo Output Frequency DMM Reading I V 0 1 V 10 Hz l 15 V to l 05 V I V 0 1 V so Hz 1 075 V to l 0925 V I V 0 1 V 1 MHz 1 075 V to l 0925 V I V 0 1 V 2 MH...

Page 27: ...ltage is normalized to 1 Vde and is proportional to the RMS input voltage 1 Vde corresponds to a full scale meter deflection HP 3 1008 Range 0 1 V Source Source DC OUtput Ou1put Voltage Output Frequency DMM Reading 0 1 V 40 MHz 0 65 V 0 0 45 V 1 HP 3400B Select the 0 1 volt range 2 Source Select a 0 1 volt ae signal at 40 MHz 3 External Multimeter Select the 10 Vde range with 5 digits of resolutio...

Page 28: ...0 V to 1 0 V 1 HP 3400B Select the 0 1 volt range 2 Calibrator Select a 0 1 volt ac signal at 1 kHz use the low frequency output on the Fluke 5700A 3 External Multimeter Select the 10 Vdc range with 5v z digits of resolution 4 Measure VBB pin 8 on the test connector and VBB pin 9 on the test connector Verify that the measured voltages are within the limits shown in the table above for a 0 1 volt o...

Page 29: ...meter deflection 11ms 3V n o v 1 _ 1 HP34006 Range 0 3V Soorce Configuration Vou1a1 5 PulseOu1put Wldth 1mSec Frequoncy 10Hz Modo Pu se 1 HP 3400B Select the 0 3 volt range DC 0u1pu1 DMM Roading 1 05 2 Source Program the source to output a pulse train with the following characteristics Vout 1 5 volta offset 750 mV pulse output width 1 mSec frequency 10 Hz mode pulse 3 External Multimeter Select th...

Page 30: ...for 30 minutes with thecovers inplace before attempting any adjustments Front Panel Meter Zero Adjustment The zero adjustment screw is located on the voltmeter s front panel If the meter pointer does not indicate zero when power has been turned offfor at least one minute adjust the screw setting as described below 1 Turn offthe voltmeter and remove any input signals from the front panel and any co...

Page 31: ...h measurements are within the recommended limits The signal measured for this test is a dc voltage taken at the rear panel dc output jack This voltage is normalized to 1 Vdc and is proportional to the RMS input voltage 1 Vdc corresponds to a full scale meter deflection For this adjustment all measurements are made on the 0 01 volt range at 1 kHz You will make the full scale adjustments using R321 ...

Page 32: ...hin the limits shown in the table above Tenth Scale Gain Adjustm ent This procedures manually adjusts the voltmeter Cor ten th scale readings The tenth sca le adjustment and the Cul l scale adjustment described in the previous section are interdependentand you should repeat the adjustments until both measurements are within the recommended limits The signal measured Cor this test is a dc voltage t...

Page 33: ...tput on the Fluke 5700A 3 External Multimeter Select the 10 Vde range with 5 2 digits of resolution 4 Remove only the top cover from the HP 3400B it is important that you do Mt remove the side or bottom covers Adjust Ral6 until the de voltage measured at the rear panel de output jaek is within the limits shown in the table above Note Since thefull scale and tenth scale aqjustments are interdepende...

Page 34: ...u will use R330 which is located on the main circuit board to make the adjustment see below Full Scale PointerAdjustment R330 c J II II I I C c J c C c I I J 0 J R 1 HP 3400B Select the 0 1 volt range 2 Calibrator Select a 0 1 volt ac signal at I kHz use the Wideband output on the Fluke 5700A 3 Allow one minute for the meter pointer to stabilize 4 Remove only the top cover from the HP 3400B it is ...

Page 35: ...onds to a full scale meter deflection HP3400B Range I I 20MHzFlatness stm8nt C304 I II c Calibrator Calibrator Oulpu Voltage OutputFrequency DCOutpu DMMReeding 0 1 V 0 1 V 20MHz 1 0 125V to 0 9875V t HP 3400B Select the 0 1 volt range 2 Calibrator Select a 0 1 volt ac signal at 20 MHz use the Wideband output on the Fluke 5700A 3 External Multimeter Select the 10 Vdc range with 51 digits of resolut...

Page 36: ...the main circuit board see below You will make the high frequency adjustment at 3V1100 kHz using C134 on the maincircuit board see below The signal measured f or this test is a de voltsge taken at the rear panel de output jack This voltsge is normalized to 9487 Vdc and is proportional to the RMS input voltsge 9487 Vdc corresponds to a full scale meter deflection I CJ 0 0 34 I CJ CJ C D I High Freq...

Page 37: ...om the front panel It is important that you do rwt remove the left side top or bottom covers Adjust Rl23 until the voltage measured at the rear paneldc output jack is within the limits shown in the table above for 50 Hz 1 HP 3400B Se lect the 3voltrange 2 Calibrator Select a 3 volt ac signal at 100 kHz use the Wideband output on the Fluke 5700A 3 External Multimeter Select the 10 Vdc range with 51...

Page 38: ...olay Kl0l low1rue ooe tho lable on page 45 2 K201B Rolay Drive Logic for Relay K201 low true saa thelable on page 45 3 K202B Rolay Drive Logicfor Relay K202 low true ooe thelable on page 45 4 K203B Rolay Drlvo Logic for Relay K203 low true ooe the lable on page 45 5 Ramolal1 ocal Con ol Ground or Hold Low to Disable Range Selector SWitch 6 VCC 4 7 kll Serlos Resistor 7 CGND Common Ground 8 VBB 9 V...

Page 39: ... 3 Theory of Operation 3 ...

Page 40: ... in chapter 7 A block diagram overview is provided f ollowed by more detailed descriptions of the circuitry contained in the schematics chapter Block Diagram 39 Input Attenuator 4 1 Impedance Converter 4 1 Post Attenuator 42 Wideband Amplifier 42 Chopper Op Amp I Thermocouple Pair 43 Power Supplies 44 Switch Board 45 38 ...

Page 41: ...can see that the voltmeter s operational circuitry consists oftwo attenuators an impedance converter a wideband amplifier a chopper op amp a thermocouple pair and a direct reading meter o IRange I _ _ _ _ _ _ J_ 7 Thermocouple Poir I DC I r _ _ _ _ _ _ _ _ _ _ _ _ _ L HP 3400B Block Diagram I I I I I L _ _ _ _ _ _ _ _ 39 3 ...

Page 42: ...e chopper op amp U303 which modulates the voltage The resultant modulated signal is then amplified and after the amplification the signal is demodulated back to a dc voltage This voltage is the output of the chopper op amp The value of the voltage is proportional to the dc input voltage The output of the chopper op amp is applied to a filter and also to the second thermocouple ofthe thermocouple p...

Page 43: ...tant attenuation over the input frequency range 4t Impedance Converter The impedance converter uses a FET follower circuit to match the high output impedance of the input attenuator to the low input impedance of the post attenuator The FET follower circuitry has unity gain with no phase inversion between the input and output signals The ac input signal to the impedance converter is resistor capaci...

Page 44: ... driving U301 This gain stage also includes the capacitor feedback adjustment C304 to adjust the voltmeter s frequency response at 20 MHz The second stage has a gain of 14 dB to the thermocouple heater and consists ofU302 The combined gain of 50 dB amplifies the 1 mV RMS full scale input signal to 316 mV RMS applied to the thermocouple heater The nominal resistance of the heater is 90n and there i...

Page 45: ...is the ac stabilizing and summing f eedback for the thermocouple pair TC30l and is also applied to the filter The ac stabilizing f eedback using R323 R320 and C309 is used to prevent the circuitry from oscillating The output from the chopper op amp summing feedback is applied to the heating element ofthermocouple pair rC30l The dc voltage developed in the resistive portion ofTC30l is effectively s...

Page 46: ...tage regulators The voltages produced by the three voltage regulators are 27 Vdc 15 Vde and 5 Vde The 27 Vde supply is used t o power the impedance converter QI21 and QI22 The 27 Vde supply is also dropped by a 12 volt zener diode CRI12 to develop 15 Vde for U302 through overload regulator Q303 In addition the 27 Vde supply is regulated by a 15 voltzener diode CRill for U301 and U304 The dc choppe...

Page 47: ...on the main circuit board see table below The switch board connects to the main circuit board using a ribbon cable PI The switch board also provides the interface for wiring to the meter mechanism the front panel power LED and the rear panel DC Out connector Voltage Range Kl0l K201 K202and K204 K203 0 001 0 0 0 1 0 003 0 1 0 1 0 01 0 0 0 0 0 03 0 1 0 0 0 1 0 0 1 1 0 3 0 0 1 0 1 0 1 0 0 1 3 0 1 1 0...

Page 48: ... 4 4 Service ...

Page 49: ...olved for returning a failed voltmeter to Hewlett Packard for service or repair Subjects covered include the f ollowing Operating Checklist 49 To Replace the Power Line Fuse 49 Repackaging for Shipment 50 Electrostatic Discharge ESD Precautions 50 48 ...

Page 50: ...ower line fuse is good Usea 125 rnA1 250 V usefor 100 120 220 or 240 Vac operation o Verify the power line voltage setting See T oprepare the voUmeterf or use onpage 11 To Replace the Power Line Fuse The power line fuse is located within the voltmeter s fuse holder assembly on the rear panel see page 12 A 125 mAT slow blow fuse HP part number 21 10 0894 is installed when the voltmeter is shipped f...

Page 51: ...eter Use static free packaging materials to avoid additional damage to your unit HP suggests thatyou always insure shipments Electrostatic Discharge ESD Precautions Almost all electrical components can be damaged by electrostatic discharge ESD during handling Component damage can occur at electrostatic discharge voltages as low as 50 volts The f ollowing guidelines will help prevent ESD damage whe...

Page 52: ... 10 _ _ 5 Replaceable Parts 5 ...

Page 53: ...To Order Replaceable Parts You can order replaceable parts from lIP or directly from the manufacturer using the manufacturer s part number in the replaceable I parts list To order replaceable parts from HP do the following 1 Contact your nearest HP Sales Office or lIP Service Center 2 Identify parts by their HP part number shown in the replaceable parts lists 3 Provide the instrument model number ...

Page 54: ...55 0180 4135 2 Cspacltor Fxd 33 uF t 10 10 V 56289 1730338X9010X 5 A10315 0180 4138 4 Cspacltor Fxd 10 uF t 10 20 V 56289 1730106X9020W A1C201 0160 4791 1 Cspacitor Fxd 10 pF t 10 100 V 04222 SA102Al00JAAH A1C202 C205 0160 5896 5 Cspacitor Fxd 1 pF t25 100 V 28480 0160 5896 A1C206 0160 4804 1 Cspacltor Fxd 56 pF t5 100 V 04222 SA102A56OJAAH A1C207 C208 0160 4800 2 Cspacltor Fxd 120 pF t 5 100 V 04...

Page 55: ...SWltching 50 V200 mA 4 nS AICR306 cR307 1901 0518 2 Diodo Schottky Smail Signal AI HS10l HS103 1205 0355 3 Heat SinkSingleTO 220 C8se A1Jl 1250 1842 1 Connector RF BNC Rept PC W Stdfs son A1J2 J3 1251 8823 2 Connector Post TypoO I Spog 14 Con1act A1J4 1252 4488 1 Connector Post TypoO I56 Spog 8 con1act A1Kl0l 0490 1774 1 Relay 1C 5 Vdc Coil 3A 250 Vac A1K201 K204 0490 1638 4 Relay 2C 5 Vclc Coil l...

Page 56: ...3355 Al R131 0757 0462 1 Resistor 75K 1 125W IF TC O loo 24546 CT4 11 TQ 7502 F 5 A1R132 0698 3488 1 Resistor 442 1 125W IF TC O loo 24546 CT4 11 TQ 422R F Al R133 0698 3150 1 Resistor 2 37K 1 125W IF TC O loo 24546 CT4 11 TQ 2371 F A1R135 0698 4486 1 Resistor 24 9K 1 125W IF TC O loo 24546 CT4 11 TQ 2492 F A1RI34 0757 0280 5 Resistor 1 K 1 125W IF TC O loo 24546 CT4 1I TQ lOOI F A1 RI36 0757 0277...

Page 57: ...5WTFTC otl00 A1R323 0698 8827 Resis1Dr 1M 1 125W TF TC otl00 A1R324 0698 3447 Resis1Dr422 1 125WTF TC otl00 A1R325 0698 4529 1 Resls1Dr 226K 1 125WTFTC otl00 A1R326 0698 4516 1 Resls1Dr 113K 1 125WTFTC otl00 A1R327 0757 0427 1 Resis1Dr 1 5K 1 125W TF TC otloo A1R328 0757 0420 Resis1Dr 750 1 125W TF TC otl00 A1R329 0698 3700 1 Resis1Dr 715 1 125W TF TC otl00 A1R330 2100 3349 1 Resis1Dr Trim 100 10 ...

Page 58: ...hield Therrnoc oople 03400 0061 I I Shield Rasis1Dr 03400 00610 I Shield Input 03400 04105 Shield RFI eo r 0853 0003 ThermocouplePairSOV 0 to 55 leg C 1826 0393 2 IC V Regulalor I 4 Pos I 2137V 3 Pln 1826 0527 I IC V Regulatot I 4 Neg I 2137V 3 PIn 1826 0393 IC V Regulalor I 4 Pos I 2137V 3 PIn 1820 5423 3 IC GaI8 CMOSiAC NAND QUAD 2 lnpul 1826 1859 2 IC OP Amp High Slew Rate 14 Pln 1826 1562 I IC...

Page 59: ...1 3100 3504 1 SWiIcI RotarySPI2T NS 87 nt r Spcg 28480 3100 3504 A2SH8 03400 01218 1 SWitch Mounting Brackal 28480 03400 01218 A2TP9 812 6113 1 Coble As 1y 22 AWG HAnd 300 mm Ig 11 28480 812 6113 A2TPIO 812 6114 1 CIIbIe As 1y 22 AWG l Cond 300 mm Ig blk 28480 812 6114 A2TPll 812 6115 1 CIIbIe As 1y 22 AWG l Cond 150 mm Ig blue 28480 812 6115 A2TP12 812 61 16 1 CIIbIe As 1y 22 AWG l Cond 150mm Ig ...

Page 60: ...234 18736 Vol onics Corp Hanover NJ U S A 07936 North America Philips Corp New York NY U S A 10017 Coming Glass Wor1al Coming NY U S A 14830 National Semloon ctor Corp Sanla Clara CA U S A 95052 27264 Molex Inc Lisle IL U S A 60532 28480 Hewlett PackardCompany Corpo 1a Palo Alto CA U S A 94304 32997 Bourns Networks Inc Riverside CA U S A 92507 46384 Penn Engineering and Manufacturing Corp DoylaslD...

Page 61: ...0 0322 8 Screw 6 32THO 375 ln Lg HD HOW40 2190 0054 1 Washer lock InU T 112 In 505 ln IO HOW41 HOW48 2420 0002 8 Nut 6 32 Thd 109 1n Thk 312 AIF HOW50 2940 0256 1 Nut Hex Ob Cham 112 28 Thd 095 In Thk J2 1251 0205 1 Connoctor Telephone Jack Phone 2 Ckt lEOl 1990 1027 1 LED Lamp lBl6 034 84301 1 L abe Front Panel lBl7 034 84302 1 L abe R ar Panel MP7 1490 0031 1 TiltStand2 235 ln W4 438 ln OA lg SS...

Page 62: ...e DrawarlFuse Power On Push Rod SWitch Power On Push Rod Screw 6 32 Thd 25 In Lg HI Screw 6 32Thd 312 ln Lg HI Instrument Cover Top Power Transformer Tublng HS 25 IN D I25 In Rcvd Tublng HS 145 IN O l ln Rcvd Power Cord U S Jumper Assy 22 AWG I Cond 300 mm rad Washer Flat7116 ln 5 1n 10 75 ln OO Washer Flat Mtic 5 16 In 375 ln 10 Mfr Code Mfr Part Number 2 480 5041 0564 2 480 034 O 2 S 2 480 03400...

Page 63: ...trles Inc Housloo TJ U S A 17474 Tranex Inc Sunnyvale CA U S A 28480 Howlett Packard Company Corporala Palo _ CA U S A 73734 F aI Saow Producls Co Chicago IL U S A 78189 Illinois Tool Wor1 lnc Shakoprool Elgin IL U S A 76381 3M Company Sl Paul MN U S A 82389 SWltchcraft Inc Chicago IL U S A 86928 Seastrom Manufacturing Co Glendale CA U S A 06328 Schurter Inc Polaluma CA U S A 62 ZIp Code 171 1 1 9...

Page 64: ... 6 Backdating 6 ...

Page 65: ...ontains inf ormalUJn necessary to adnpt this manual to instruments rwt dire tly covered by the current content At thisprinting however the manual does apply to all instruments 1 h ref ore rw inf ormation is incUuled in this chapter 64 I ...

Page 66: ... 7 Schematics 7 ...

Page 67: ...sassembly 67 Component Locator Diagrams 68 Input Attenuator Impedance Converter and Power Supplies 69 Relay Drivers and Post Attenuator 70 Wideband Amplifier Chopper Op Amp and Overload Detector 71 Switch Board Schematic 72 66 ...

Page 68: ... o g 0 0 O I I g OO C 000 oumDa o lBllIJa ollBlJI a HI DOl g ill g of OOlo oOl lH a 0 aO 002 Y oD ll Jo ocm a oDm a o lID a 0 Ji Ja o gElEg 1 I i i UJJI C 0 0I gs 1 1 10 o 0 0I mllJ 00nm r a 0om J 00om J0 0 IL JI Oom JO a 1326 oO o o oCii iIla i 5 a gEIEIg o o o o all a o o ta J ta cJ b ocJ g g ml IC202 IC20l IC2O 088 01 0 o 000000000000000000000000000 0 RIgp 0 0 mEl a o 0 2Q 0 0 oumDa r 1 0 al6 0...

Page 69: ...C N z N a u r 0 0 e 5 is c 1 I __ __ _ _____1__ ...

Page 70: ...ey 0 CQIlZ 51 11 October 1 992 03400 66522 1fY _Ill I IS B T 1CI I IMPEDENCE CONVERTER l CL I I 1 I w Dill r _m Ill W 1 1 m r r w L t t ll l i l 1 I Y f uw tlUI _D OIL IS tIIlll t 1 el 5 am IS I I I 15V nv 1 _ 2V 1 1 CtW ISV 6 2 ClHI 6 1 VI Io D il IIT m i 0 rn II PQl R I OIlU I S Tft P II I c J E lj1l0 T POI 11JS lINn 1 L11 I kVUiIN VClII 5 l UION E ljIlC I L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

Page 71: ...Tt t 1 n 1 I TN I I Ciil 1ilZ1 VV lii Relay Drivers and Post Attenuator 70 10 11 KIOI 2 Kl0 4 02 lo 1 g 201 SEI 0 ha r I October 1 992 ha r 03400 66522 I I R lIlY DE t RGllEO voc rs itO K21 001 0 0 0 0 I 11 0 0 0 0 0 I 1 00 0 0 300 0 0 I 000 I 0 3 000 I I 10 000 I 0 30 000 I I 100 000 I 0 3 O 000 I 0 han I 1 RELAY t RGllED 1 202 I K20 0 0 0 0 I I 0 0 0 0 I I K20 I I 0 0 I 0 I I 0 0 I 0 han r 0 ru ...

Page 72: ...SVfo2 1f rr T 1GI D I L _ _ _ _ _ _ _ _ _ _ _ October 1 992 03400 66522 II OVERLOAD OETECTOR n 1 18 o _ I 1 01 w I r I I t l R1Gl I HOPPER OP AMP I CI 1i 111 O D 1 t o f i r1 m c ___ D I r 1 _ Wl rtlr lCl I i V on Il w L 1 llll IS _ r ISV 1 J IIlII L 0 111 11 rrP T R 1M J I W I 0 J2 I DC lur l o DC WI 1 1 n 011 LP FILTER DC OUT AMP WIDEBAND AMPLIFIER THERMOCOUPLE CH9pPER OP AMP and OVERLOAD DETECT...

Page 73: ...K 1 5 0mm BLUE 1 5 0mm BROWN I I I T P I 3 LED CABLE RED TP I 4 LED CABLE BLACK Switch Board Schematic 72 TPI O lPI2 TPI4 K l 0l K2 0 1 K202 K204 K203 S COM 2 2 2 2 2 2 2 2 2 2 2 2 2 2 MOUNT I NG BRACKET FOR 5 1 2 2 2 2 2 2 SHI SHLD4t2 I I I I 1 2 I 1 4 I I I I I I I I I I I I I I I I I I I I 1 October 1 992 03400 66523 S I I C I SW COM 2 4 1 5 y 6 m N 7 m 0 B 9 1 0 I I 12 SWITCH BOARD SCHEMATIC 4...

Page 74: ...ecautions 50 equipment required calibration 20 F factory setting linevoltage 1 1 f eature overview 1 f eet removing 15 flatness adjustment 33 Fluke 5700A Calibrator 20 front panel labels 2 pictorial overview 2 full scale gain adjustment 29 full scale output de output jack 14 full scale test frequency response 23 fuse factory configuration 1 1 fuse holder location 2 12 part number 49 replacing 49 f...

Page 75: ...nge frequency response test 22 range selection 13 range swikh 2 13 rear panel overview 3 rear panel labels 3 output jack 3 14 pictorial overview 3 relay drivers 45 replaceable parts lists 51 ordering 52 response time 4 ribbon cable custom 36 S schematic diagrams 14 65 screw zero adjustment 2 13 28 source impedance output jack 4 14 specifications 4 static electricity 18 50 switch board description ...

Page 76: ...UL 1244 EMC CISPR 1 1 1990IEN5501 1 1991 Group 1 Class A IEC 801 2 1991IEN50082 1 1992 4 kV CD 8 kV AD IEC 801 3 19841EN50082 1 1992 3 VIm IEC 801 4 19881EN50082 1 1992 1 kV J October 1992 In the United States Hewlett Packard Company P O Box 301 815 14th Street S W Loveland Colorado 80539 U S A In Europe Hewlett Packard GmbH Department ZQ I Standards Europe Herrenberger Stalle 130 D 7030 BOblingen...

Page 77: ... Chapter 2 Calibration Procedures 17 Chapter 3 Theory of Operation 37 Chapter 4 Service 47 Chapter 5 Replaceable Parts 51 Chapter 6 Backdating 63 Chapter 7 Schematics 65 Index 73 hm i K Hewlett Packard Company Printed in U S A Edition 1 October 1992 E1092 II III I I1II1 I II III IIII I I III III I III II I II Ii 03400 90014 ...

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