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HP Car 3490A manual Tot, Orurr9iorrrol98rfiilV, RnvH ornv H Or6rnrv CucxJ Rvu . Hccr, RvrrxrJNorroNnr Rfillj

Contents

Muitimeter Tt,,,,t Hewlewpackard ManualPartNo MicrofichePartNo PrintedAPRIL Tableofcontents C0NTENTSGontd RABLEOFCONTENTSCont,d Listofillustbations Diagram Äl,il ?7l+eatic ?rorr ACAdiGüffiPorariryR,tüä Frz 12ACCESSORIES.AVAITABLE 1lNTBoDucTl0N0PT0NS SPECTFtCATI0NS 14INSTBUMENT.AND Manualidentifica T I O N 35+o . os +o . o2s Lo . t Contd Specifications Oo7 .005 .0m8 1 5 0 O07 .oo5 SpecificationsCont,d 00fiv1000.0v 24hours23o 10c DVs/u SectionI Model34904 GenerallnformationContdVin = vs/H rl Dvs/H REc NTR0DtCTloN Installation INSTALLATION.OFOPTIONSBenchUse LsolatedData0utput0ption021-hp-111ZlAl Option050andOption060 29INTERFACE.CONNECTIONSData0utput0ption021 RemoteGontrol0ption022 OPTtoN021 Fc öSectionII Model34904 7N i 3i -s t** JrJü,1t REMOTEINPUTCONNECTORJ7 5 E E i F = =2H* F EI = 6 s i ä 2 qd E ? 3 5 fr i F 3 ä = ! 9 i l RearInput GeneralPurposelnterfaceBusConnectionsCablepart NO. Length 10631A 6 3 1 10631C GeneralPurposeInterfaceBusConnectors GPIBBUSCONNECTORJl29 9 f Outguard TriggerConnections,GPIB0ption030 Sample/HoldConnections,0ption040/045 D e l 3 4 9 0 a For J7 is -hp- Part No -0084 Amphenol S7-30360-37sRepackagingforshipment SectionIII Model3490A WARililG Instbumentcapabilities13FRONT.ANDREARPANELOESCRIPTION 15MAXIMUM.INPUTVOLTAGES I7 . Generaloperatinginstructions Turn-OnandWarm-UpGuarding FloatingMeasurements SELF.TESTOPERATION Acvoltagemeasurements Resistancemeasurements 60.0hmsSignalVoltageandCurrent OutputSignalsandLevelsInputConnections 62.0hmmeterSampteRateandBesponseTime InputSignalRequirements InputSignalsandLevels79.0utputSignals Data0utputlsolation GPIBBusSignals 030SRo DAC 101Talk.0nlyNoController 103GPIB.Controlof3490ARÄi+ -cg- lL L l Asciicodecharacter Binarycode Octal Code To7AddressCodes ProgramCodes A R a C T E R2 3 4 5 6 USE Ldav F D Printerand 3490A 349OAandWill acceptdata Printerwill I X E D N I 1 J GPIB0peratingExamPleOoü 0 f R \ r @üoü@f E \ SetsLREN LOWon bus 136Controlby.MarkedCardProgrammer \tD?u6,.. TlE,, . ?5VTo haltprogram,press SroP l CMD?U6 OUTPUT13,30 ..M3R7F@E 349OA PRoonnvr LrrruE,ir Or o o l 4 0 z o27 l F r 158Input.SignalLimitations 160Sample/Hold.TriggerSignalRequirements152Special.S/H0peratingGonsiderations 156Guard.ConnectioninSample/HoldMeaurements 165Initiating.Sample/HoldMeasurement O40 O20OtherOptions 040 030 173Using.theTrack/HoldMode Typicaltimereouiredto SETTLETO1 %200 1000v Tnputvoltageat M EO F S / HT R I G G E RVoltageactually Measured 179Using.theAcquire/HoldMode V eT a Vc-vs T s 182Using.50Hz or 60Hz PowerSourceOptions 050or060 RatioMeasrementProcedure$184.RATIOlfleasurements0ption080 $186.ExternalBeferenceVoltages Model3490A +3 . Generaltheoryofoperation ßüy4I . Intboduction Display RangeandFunctionControl+19 .DCANAL0GCIRCUITS LnputAttenuator SwitchingCircuits BoottrapCircuit+23. DCAmPlifier +25. OCAmplifierGain Otui Ls, ysSectionIV Model3490A Rt-- c-++ IntegratingAmplifier IntegratorcircuitsDual-SlopeIntegration L44. x 20Amplifier ZercDetectAmplifier52AC.CONVEBTEB ACAttenuators CurrentSource HmmeterPowerSupplyOhmsconverter +70 ISPLAYASSEMBLYFigure HmmeterReferenceInputProtection DisplayUnits DataGounter BuffersTimingCounter M I N G 10. Block Diagram,Main LogicASM Flow Chart R0,0m 11. Block Diagram,Main LogicCircuits Model3490A Tl-90.AlgorithmicStateMachine TransferandZeroDetect Enaele P U T S Enable Oualifierinput To ROM105Input.PolarityStorage +il5. DCSWTTCHNGLoGrC +II7 . Referencesupplies RatioMeasrements0ption080 + I 7 + t Powersupplies+128 .FBONTPANELS1VITCHING +I32 . Self . Testfunction 134Logic.Test,No.lPolarityin Ratio Measurements G H TurnoverError,TestNo.3 +137.10V RangeZero,TestNo.2+143.0.1VRangeZero,TestNo.b 4145.x .01Atten.x, 100Gain,TestNo.6 +158 .DATAOUTPUTOPTION021 4t74.REM0TEC0NTR0t0PTtoN022 +r9 +188.ShiftRegisters LocaURemoteFlip-FlopDauFlag 198GPIB.System +2r GPIBSystemOperation 216Acquire/Hold.Mode Figwe 4-23. WaveformslllustratingAcquire/Hold Mode+212.SAMPLE/H0tD0PTl0Nll40or045 Too Sample/HoldAnalogCircuits+23 @ n z Ja+z RooCompensation TooK Flgure4-27. Sample/HoldLogic Block Diagram 228Sample/Hold.LogicCircuits+25 Lye e outpur DC Amp 512 615.0 1000v 124.4 154.OExternal Exterml Hold H HehsPage Figurb4-30. Sample/HoldMeasurementSequence Ortoroo OruY --Jl Integrator Waveformsarenot drawnto timeo, o,,rnI?ltExample of TRACK/HOLD MEA Surementseouence I-r Gort +prr2zrs.i Qrs Sre Ero-+ 3r4 Zra Orr RIOLD A1 bHOLD B r l l RecommendedTestEquipment 10kn TNTB0DUCTIoN RecommendedtesteouipmentPerformancechecks S7. Performancetests $9. Dcvoltmeteraccuracytest Performancechecks @ \ d15OHMMETER.ACCURACYTESTS L6. PreferredMethod 1OO AC Voltmeter AccuracYOhmmeterAccuracy Pebformancechecks ACCOMMON.MODEREJECTIONTESTDcvoltmeterinputresistancetest S24.ACNORMAL.MODEREJECTION Rrr-rrr--r Model3490APERFOBMANGECHECKSO o ? 28AC.VOLTMETEHINPUTIMPEDANCETEST @ \ - O @ @ o o Test OscillatorMU L T I M E T E R h p 3 4 9 O a 6 5 2 a Perfohmancechecks RATI0PEBF0BMANCE0ption 080$38. DC/DCRatioAccuracyTests + 100.000 S41.AC/DCRatioAccuracyTest ExternalReferenceInputResistanceTest45GPIB.0PEBATIONALCHECK0ption030 Ext Ref Nput Lnput Display Limits Range Voltage Lo v Ranse 1000kO range It l l K oPERFORMANCECHECKSModel3490A +tll Fä il Ir fli Fj FlIiI Ii tti 1üj Li i l R * ! i t F T Rf,lIr i5i 1.+riI i , Il It I l L1,1ti Procedures Adjustment$ 51 .ADJUSTMENTPROCEOURES Powebsupplyadjustment Model3490AAOJUSTMENTPROCEDURESSectionV Dczeroadjustments$57. Referenceadjustments Dc standardhp- 7a0Bis requiredfor these 69SAMPLE/HO.LDADJUSTMENTS $66. Ohmmeteradjustments Model3490AADJUSTMENTPROCEDURESSectionV 73.0ffsetAdjustment$75. DielectricAbsorptionAdjustment Dc standardhp- 7a0Bis requiredfor this Aojustmentprocedures RatioreferenceadjustmentsLqe Orrra Adjustmentprocedures ColTect Perfobmance Testrecord Performancetestbecordcontd 001v r 0.oo1vLO.V l O V 1 0 + 1 2 . O O O Performancetestrecorocontd 50000v Ooooov 120000vExt Ret Fngu V 1 0 00000v 10.üoo 12.0000v Intboduction OrderinginformationNON.LISTEDPARTS Proprietaryparts Otv Reference HPPartNumberDescription Mfr Mfr PartNumber Designation Code B l e 6 1 . R e p l o c e q b l eP o r t s Model B l e 6 1 . R e p l o c e o b l ep o r t s l C o n t d lRcor-@4o Leol-m4ol\ Oty ReferenceHP Part Numbel B l e 6 1 . R e p l o c e o b l eP o r l s C o n t d B l e 6 1 . R e p l o c e o b l eP o r t s C o n r d Qty B l e 6 1 . R e p l o c e o b l eP o r t s C o n t d fAI R3A AIR3@ 28480 2a4AO R t s l C o n t d f E p l o c e o b l e B l e6Aterei alnz? Model 3490Ä DesignationReference HPPartNumber OtyDescription Mfr Code Mfr PartNumberB l e 6 1 .R e p l o c e o b l eP o r t s C o n t d B l e 6 1 . R e p l o c e o b l eP q r t s l C o n t d l Oaa+-rrtt $Reeo-sg DMT4LOON B l e 6 1 . R e p l o c e o b l eP o r t s C o n t d R5ß7A5s4 Sli2 Aoaroassyrehotejuxper Oty Cr r?21CB a72l ?5r-orlo Otv Description Mfr Mfr PartNumber DesignationHPPartNumber Code28aao 2A480 B l e 6 1 . R e p l o c e o b l ep o r r s C o n r d Re*-ooar lilZroo rzaaAA Orzo-oo+o Description Mfr Mfr PartNumber Code Reference HP Part Numbet otvDesignation B l e 6 1 . R e p l o c e o b l eP o r t s C o n t d B l e 6 1 . R e p l o c e o b l eP o r r s C o n t d C8 ?2rlC5 22at DrT4LOara ModeI34904 T u 2 I l 5 uAI3CR8 O O E B R E a K D O I I N R 2 r Model SectionCaeleriaeon Ottgiitrdrei Isolatii Boardassy Cableribbon A22API Heiioi B l e 6 l . R e p l o c e o b l eP o r t s l C o n t d 600400 A27RI B l e 6 1 . R e p l o c e o b l eP o r t s l C o n t d A2ARIRfxd Cotp IOK OHX IOI L1Y OBD Z9cl 2 e c t 429C4 29C5 OHn 1trÄ 1/4W I I P 22K otr lot I P l2K OHI lotA3IU3 A32RI Reference HPPartNumbet oty Description Designation Mfr Code 2211 2211 CB A34YIA39RA 2A4AO 2S4AO T20/o Reference HP Part NumbelB l e 6 1 . R e p l o c e o b l eP or t s C o n t d B l e 6 1 . R e p l o c e q b l eP o r t s C o n t d EIlrDtrs PosT assYIcxssIs assY 284r0 2a+ao 2A480 28480 2g4AO 284aO HPPartNumber Description Mfr Mfr PartNumberReference Xo1 Reference HP Part Number Designation OtvDescriptionMfr Code Mfr Part Number B l e 6 l . R e p l o c e o b l eP o r t s l C o n t d l SectionVI MP37 MP23MP7 Designator L M P l a MP1B M P l C MP1D MP2 MP3 MP4 MP5 MP6 318x32 29500043 Pbeliminarytroubleshooting ACCESSF0RSERVtCtNGTroubleshootingtrees Powersupplychecks TableT-2. PowerSupplyJumperWires 13DC.ANAL0cCtRCUtTSAZAsemblyExchange DCAmplifierChecks DCAmplifierSwitchingGircuits NliiA N D 0 V L E V E L S O C C U R a T I G G E R S C O P E a T a 1 T P K , + S L O P E 3I .INTEGRATOR Troubleshooting 33AC. Convebtertroubleshooting37OHMS. Convertebtroubleshooting 21A. -to-C0NVERSt0ND CtBCUtTCHECKS Displaytroubteshooting Logictboubleshootingsuggestions 65SAMPTE/HOLD.TROUBLESHOOTINGTREES ExternalTriggerCircuitGheck59SAMPLE/HOLD.SERVICING Accesto Sample/HoldGircuits 22000139 03490-006M03490€6528 O3490-27301 AmplifierZerc0ffset 75SCHEMATIC.NOTESRATIO.TBOUBLESHOOTING Logicgatesymbols + 5Truth Table Truth Table SectionVII Model3490A AlphabeticalListingof 34g0A Mnemonics U 4 o tAlu401 Rexe Nrsc Tl-l = lIaFeV-pF Guspb b lPage I1Lgji I1glil Rtl7-r2Iai ott *nn !drp6 ltnt. rync,+.1@ + Input @ @@ Ll?Qxl c207c2or3ttr . n ? 1 t 6 1 l 7 + T i + ? UiL T EQ208 YES Q2O5 t1 swith 3 6 m s i 4AITPK. + Ratio INT R317-1 O2or0205 0208 +.JL RaGLfT Q9e See Notes 299A ?rSlI 14,iäFfi 1s17-t6 Ov1--t==- -l6omsLOomsF R7vl l Tlrtlt Wath AnDr Rd 15 ot Altrt. JFuldbo+5V Lm r . tt Llo Tlrtlt Wath AnDr R7l7-r8 Troubl .. hoor A7Ot ?CRIOüa ll #lsriieo,e*l Eff#riIub s!!h I l DisplayTroubleshootingTree T9lt L i l t l T l=LJ. L--l ITa --- it Ru*rffifc TEvO 1 o NVWPage O24 oo24 @24 oo24 9032 oo24 t.o24 n 4 n2.4 Lirlt?lt..it \- toresh@rArur5 aIut1 J3t,1 Lop Initiare 6 mre smples Displaysholdread+ 10.oo24 + 60O0.xxOL Tl=l S l . lLDr s €@CI6@@e#ffi + 5 n-s l r S + Otuu U.T,J,l,,t-t Ttj ,o+ i O 5 4 s F +5 ms-l 10. Logic Clock TroubleshootingTree 2317-1 THttttffi L sl \f -Jt +1 l$E B?tr+1HHHLE r r r r r r r l +ft$b!too L- l l---,.l Us-l UrlLlt 5 a Jtr2cr \ÄÄ Llj. -zooms*#ll-+l.l-r+- zoomsl Pulses 1-t.i1 Ea . fTi1i 2s17-26 = b3mtl I. J? FfiAt7A2 Gig Tlu2, a t1u3,Arl NOI€S =rF Th.-l+ 5vr-r 1o.4ßF Figare7-12.RemoteTroubleshootingTree,Option022 2717-28 RtN*16t12+s-Yml +o.cF Start 9 0 D- 3 3 8 Hffi3 338r 13. GPIBI/O TroubleshootingTree,Option030 2917-30 Cauil oN . l Öl--.le Hp Porl No O Rev . BPort No V . C D a A27KI Shoulo 8€ CLOSED.SET SAMCorrecn CABLESCORRECTLYGO. to SET S/H Sayitch to TFACK/HOLDMain CIRC-IIT8OAFO. Shouloae T3t17-32 Oft-.*l9 0 D 3 4 3 HOLD. M€ASURE Voltage AT I,l Hp Fort No -66527 Rev.BPort No . O349O Rev . C To A2 X E 8Ap-crtot awrcH To rRcx Eogeof .AIPLIHOU TRIGGCR!GIore Sigial G€S High Tote Ffi.f-L JüJRävnG.iir 3 f r a 73317-34 3490-0 Hp Pott No.O349O EXT REF TPC P U TLOW P U T TPC LOWHigh TPC A13CR6 G H LOW G H LOW H I G H L O W TPC+ l 0 16. Ratio TroubleshootingTree A12 A17 A22 A11 3 or A36 A34 A35 A30 A33A31 Rearof Instrument € d I11Ral 111 +++F+r@a Jj,i @ @.6r#Jälslt*tJl=l Rö*et e J l + ö Üä,ierispgglg*@ WEE @D@@@@@ ++++++++f++Evvvvvvvvvvvv EfEU 18 a Block Diagram 737 FP?fä WüE,Ä,liREFEBETTCEDESIöTATIOtIS CoKno LelQg Lli-@@@@@@@Ilgt,,a ,,r.i.li Q l A R D OverloadprotectionHovpoverloaoprotectionh Bootstrap P L I F I E R T6aztRuorerzV AA A M P L I F I E R ? z e 1 2 z \+lFeedbackattenuator $E? Z r z l391740 Zl-----l 9i czo1 @$Y@ Y 6ö Ff$$**H++?o70 f IRrr5- l .FrrBll- l Pt lP r f Lp/0 Al I MArNcrRcurrassEMBLYo34so 6650r +ov +rov FRoM Sv---*-l---5vSueeLv +rzV ----d-tr-E +tzv +5V +5v TZV TZV ---b C203 o.33 T7v- t7v CR202 1411742Zero Detect Faq h-,,dn Tf,rlXPf*trt*r+9e . E Rblhb-l- --,1 Ffie Ott,tItu ?-rv F E R E N Cpeo L a R I T YL O G I C +REFERENCESUPPLYV E R T I N G P L I F I E R Figr 7431744 U3o! ----tF E R E N Cpeo L a R I T YL O C I C V E R T I N G ß?i-,- *$1,sE1iV Rrr NililjiLlt ri.ä-i.i Ffi ?ääijO * 9sö $ 3 1 6 t Powerfrom -5v---dä-!-- IP*333O*. n i!g!?ifiJjscaNBH \------lJ 7451Siorra Timingcounter P .L.iU.B Ll 11 I3g.iStir lT- Il Äiiiirr lir,il..1 Ilir ! o @ @, = T-T I3Bl,J-r Rua --I xmaNne--r LHur R N O N C L E a R R C U I T 3bEi,?# Röüärrrr-l FRoMU6iIä ?5SilijL o Otonrä Tansferenableh F R O MU 9 2 L8d,tshäl 3Yä1..dPA N S F E RA N D Z E R O D E T E C T P U T L a RIT Y Storage Pp* @@@@@@@@@@@@ Il JE i i + + i + @@@@@@@*späsw IlJ**io**l.Io,l 6ffi-lLffioi Fää-.trto-*tot Soue.e,.oloieftil-l Soupr-Ezro-r-oirfr74917-50 Fs-rLErHoLDpi6il-l + q r \ 9 t r l = lHp PortNo O \ R l 220V Toov T20v 240V Rr,rorHERIg t31,.9uIGgARo Ouiro RegulatorTOAa Grppry Optrorr Assr Ozot 5117-s2 + l 7 v Regulator+3OV Regulator 3OV Regulator BCD Hp Port No.O349O-66503REV . B Enable Roaru4oreil=i33SfTHr-+ Polaritydisplay Polaritydisplay Enable U4,uroA N N E R a T O R Scan Decoder Figwe 7-27. SchematicDiagram,Display, A3 Io*FS3l7-s4 Ra FE FA FB R C U I TS I D E = EComponentside S l r q r l Q N a e r , *I .l ,*l ,i , ,ElllRANGEIH**iLRor..RArEcH,rrr., tfl*l R*.,j# Ss -s6 LFaN6E-l s4LFUNcroNl Test =sÄl---l + + 6 DLl l L-sJ +tzv ---fre- +rzv r l +5v --+r5- +5v A6T* .* r*.* *-..uV, cK+ Oot AttenuatorConverteramplifier + r 7 Figwe 7-29. SchematicDiagram,AC Converter,A6 S7l7-sFilter Nc corvepreR ourPUT1 UeacpalpueHuoll3as Drluod O6t9O-20999Ofqlrod 06t90-O999-l Ei-tr Ifl3?5fö*co,cFlt Bl,,J.li,i Vrx Norlrr,rn CNn.Norr vH GttornrvsnHounor Rsnxo Arn8rg Crlerueqcs Surq6 Urur8erq RelJouoJrV 0vLl6s LN3UUnC l3unosU3t3NltHO33N3U3J3U Ssoucv 39N lmdNt A22Al ? ? T42242 1M1 ASSEMBLY 3äYäiäT?lTl-?.1..i Fff.ItTrsGooo +l--.rRxrnrr +l8oyJl,flylo SAMPLE/ Hold Triggercircuit Tl,,t1 7411142 Wro+f-!-l-tr-ourcuaRo Ro ooroorrr coNNEcroRJ6 Ro *.or. ,*r* coNNEcroRJ7 L J J l ÄlllUr-l 5 a ÄX?,3,.o LEoR Eon Fil!TäläfQ U E N T I ALO G I C Freque Logtc Clock Frequencydoublerdelay Data Multiplexers+-n Outguard # , . , J 9 \ I C E N I a N ri fr. FDAraFLAG 2eI I G a N E +5vr---1i1+4W S H I F TR E G I S T E R S Guaro + 4 l Oi---qoZfu*-rrot 74317-64 Oo-1 Al2 Hp porttJo,03490-66512 At77 a + s LO REMoTEnruruurrcraronLOCAL/ Remote FLIP- Flop LOCAL/REMOTE = r RHs tl su31sr93u Lockdelay AJtlilo-*il1.iI91 .-Ct FlIto*.- -7u u5 \ .,- I \ Onr9nvu0 rdtIlnn-u3x3 Rns+NBId Ouvngmo l,ssv Z r Hp Port No To A2 C D E F H J K L F8fi8 14,0o*%ÄäuJJiiL8 PRbou%u T8 iäB?i R c * o lI l r g S If U8 is BAD.OUTPUTWAVEFORMS46.4 K Will 8E Loadeddown ?? l9Li9i.-.? 747l7-68Rt\u ? * t o RrreenrroR €l-----19 U l HPorf No . O349O Rev . C Ori Iäo*,j.,lj!,jTABu?,.ffiIi O 1 Bs-u M P L E /H O L D T R I G G E R CI RC U I T SA L I F I E R M U L T I P L E X E R Hmtb 74917-70 ?.46,f?6Tr%r,i Jil CRsOEo o r a o r B orc o r o o t M SDo To S/H Logic I N E Dislay COPYRIGHTt973 by Hewlett PackaroLOCAL/REMOTE $ Ection Aage Clocks 5 Lines Ouoorn REcErw 36.BlockDiagram,3490AGPIBVOCircuits 7117-72 FC Company L24-----r3-l Or5 Hp Port N o . O 3 4 9 O 6 6 5 3 4 R e v .AHp Porr N 0 3 4 9 0 6 6 5 3 6 Rev a N D Tot Orurr9iorrrol98rfiilVRnvH ornv H Or6rnrv CucxJ Rvu . 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