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HP Car 3490A stt, lmo, .gggz, 01.oo35, 0{1.9990, 't.00125, tr s9.86, 10.0100ov, r0.05000v, ro.100OOV, 11.0oooov, 110.O0OOV, TESTRECORD, PERFOBMANCE, t.rtj:..::..::

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				PERFOBMANCE
		Model 349oA			TESTRECORD	performed
		Model 349oA			resrs	performed	by _
	. . Hewlett,-PaQkard				resrs		by _
		SerialNumber
		PARAGRAPH		DESCRIPTION	READTNG		TESTLIMITS
		$9	DC VoltmeterAccuracy
' ,		' : ; : . . ' ' ,
t ' , .		' : ; : . . ' ' ,
t ' , .	, . . :	. :	.1V	10.0100ov				Max.
	, . . :					.009995		Max.
								.010005
		.		r0.05000v				.010005
		.		r0.05000v		.049990		.050010
								.100015
			tV	ro.100OOV		0.09997		0.10003
						0.09997		0.10003
								o.50006
								1 . 00010

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10V		11.0oooov
		110.O0OOV
		r 10o.00OV
1OOOV		iloo.ooov
		i 50O.00OV
		+ IOOO.OOV
AC Voltmeter Accuracy
Range	Input	Freq.
1 V	1 V	2OHz
	1 V	1OkHz
	1 V	1fl) kHz
1 0 v	1 V	10OkHz
	5 V	2OkHz
	1 0 v	2OHz
1 0 O V	l O V	l O O H z
	tOOV	50 kHz
lmo v	1000v	10 kHz
	1000v	1O0Hz
1 V	1 V	25OkHz
1 0 v	3 V	25OkHz
Ohmmeter	Accuracy

oo.gggz 01.oo03

0{1.9990 10.0010

o10.o03

099.990 100.010

0099.97 0100.03

0500.08

0999"86 1000.14

0.99600 1.00400

0.99875 1.00125

0.99875 't.00125

oo.9965 01.oo35

(X.9925 05.0075

G).9600 10.0400

o09.965 010.035

o99,875 1@.125

0998.65 1001.35

0998.75 1001.25

0.99190 1 . OO810

02'9715 03.0285

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	Range	Input r.,	Min.	Max.
			Min.	Max.
			.@9983	.1000t7
			o99988	1.00012
			0{,.9s88	10.0012
			099.988	100.012
			tr s9.86	100o.14
			09996.3	100G'.7
	DC Common-Mode Rejection			0.00005
				0.00005
	AC Common-Mode Rejection			o0.0001
				o0.0001
	AC Normal-Mode Rejection			oo.0316
				oo.0316
	DC Voltmeter	Input Resistance
	1OV Range			oo.0010
	1O0 V Rangre		000.908	oo.0010
	1O0 V Rangre			oo0.910
				oo0.910
	AC Voltmeter	Input lmpedance
	Without Rear Terminal

	25 Hz	0.65975
	25O kHz
		0.49211
	With Rear Terminal

	25 Hz	o.65804
	250 kHz
		o.41321

Contents

HEWLETT PACKARD HEWLE"WPACKARD CERTIFICATIOtII W A R R A ] T TAYT D A S S I S T A I T C E MUtTIM ETER TABLEOFCONTENTS TABLE0F C0NTENTS(Gont'd) rABLEOFCONTENTS(Cont,d) Tableof ContentsModel34904 LISTOFILLUSTBATIONS Figure Line VoltageSelection . . .2-l ohil"a;;a;;;;i : . il 2 - : 3-8.Abti,ty;iöör6l"rä,oic,iirl "'3-21 GENERATINFORMATION 1 . 14INSTBUMENT.AND MANUALIDENTIFICA - T I O N i I;IBBBBV lo . zs*o . oo (Cont'd) Table1-1.Specifications t o .oo7 .005 .0m .o07 .oo5 Table1-1.Specifications(Cont,d.) r 1.00fi)v 10.q)0v 24hours(23o r 10c) Model34904 Table1-2.Generallnformation(Cont'd.) vs/n =vin+ Kl _f,r dVs/u vin = vs/H - rl S E C T I OtNl INSTATI.ATIONAND I N T E R F A C E 2 . 16INSTALLATION 2-17.BenchUse 2 . 21INSTALLATION.OFOPTIONS 2-23.lsolatedData0utput0ption021(-hp-111ZlAl 2-25.fsolatedBemote0ption022(-hp11122A1 Model3490ASectionIl 2-27.Option050andOption060 2 - 29INTERFACE.CONNECTIONS 2-30.Data0utput0ption021 2-32.RemoteGontrol0ption022 T,i",,*lJ.i: f: ,1.,t;: 5 2H* F EI = 6 s i ä 2" - qd E ; ? 3 5 fr i F 3 ä E ; ? 3 5 fr i F 3 ä 3 9 H ; ; 5 E E i F ä - j = ! 9 i l E F ! ! A 1 0 0 0 v , 1 0 0 0 k o L 10,000ko 2-34.RearInput 2-36.GeneralPurposelnterfaceBusConnections Table2-2.GeneralPurposeInterfaceBusConnectors GPIBBUSCONNECTORJl2 9 9 9 9 f Figure2-9.GeneralPurposelnterfaceBusConnections T R I G G E RC O N N E C T OJRl o o o o o z Z z z z z z Figure2-10.TriggerConnections,GPIB Option 2-40.TriggerConnections,GPIB0ption030 241.Figure 2-10shows the rear panel Trigger con s7-30360-37s) 2 . 46 .REPACKAGINGFORSHIPMENT SectionIII Figure 31. Front and RearPanel S E C T I OINII O P E R A T I NI NGS T R U C T I O N S 3 . I7 . GENERALOPERATINGINSTRUCTIONS 3-18.Turn-OnandWarm-Up 3-20.Guarding 3-24.FloatingMeasurements 3-26.0verrangeMeasürements 3-28.OverloadIndication 3-30.BangeIndication 3-32.FunctionIndication 3-34.Autoranging AlR429 3-42.DCSampleRateandResponseTime Table 3-2.SampleRateand ResponseTime 3-44.Input Resistance Input resistancein the dc function is greaterthan Pilä:::",----__1_r Figure3-4.ExternalTriggerSequence(Option 020) 3-66.DATA0UTPUT(Option021) measurement function 3-77.InputSignalRequirements L *"nn 3-71.InputSignalsandLevels 3-73.Data0utputlsolation 3 - 75REMOTE.C0NTROL(0ption022) 3 - 87GENERAL.PURPOSEINTERFACEBUSI/O (0ption 3-101Talk.0nly(NoController) 3-103GPIB.Controlof3490A Table3-6.AddressCodes 'to7 r sampling with the Table3-7.ProgramCodes Hold line may be _ i - l Page Figure3-9.TimingDiagram,3490AAddressedto Talk outputted in the following format: (Example listing: NDCfXXXXXXE-Y) StatusCodeAlpha NNormal Operation OL Overload xX)c()ü EExponentIdentifier Polarity of Exponent YExponent(RangeDigit) C R CarriageReturn LF Line Feed OrPR'Nrr@[STORE To haltprogram,press sroPl 1 0 CMD"?U6 20 OUTPUT(13,30)..M3R7F@E"; L-J 3Q FORMATB 3-136Controlby.MarkedCardProgrammer c\tD"?u6",.. TlE",, . ?5V rffi'slisli r.l.i...l*jiiä='8ffifr 349OA PRoonnvr lrrruE],'ir E i r i r 3-152Special.S/H0peratingGonsiderations 3-156Guard.ConnectioninSample/HoldMeaurements 3-158Input.SignalLimitations 3-160Sample/Hold.TriggerSignalRequirements 30v/s 3-165Initiating.Sample/HoldMeasurement 3 - t t o 3-173Using.theTrack/HoldMode I A r 3-r9 v s - v e T s - T a Vc-vs T c - T s SlopeBC- SlopeAB 3-182Using.50Hzor 60Hz PowerSource(Options 050or060) $184.RATIOlf'leasurements(0ption080) $186.ExternalBeferenceVoltages 3-188lnput.Connections 3-190Ratio.Display Page SECTIONIV T H E O ROYF O P E R A T I O N Ftgure4-2.BasicDiagramand Operation 415. Display ,1-16 (Test "overload +23. DCAmPlifier +25. OCAmplifierGain 4-27.SwitchingCircuits 4-29.BoottrapCircuit 4-35.LeakageGontrol i'Xk tt Figure4-4(b).MeasuibmentSequenceNotes 4.39.INTEGRATORCIRCUITS 440. Dual-SlopeIntegration 442. IntegratingAmplifier L44. x 20Amplifier 446. ZercDetectAmplifier 4 . 52AC.CONVEBTEB 4-54.ACAttenuators 4-56.ConverterAmplifier 4.60.OHMSCONVERTER 4-62.CurrentSource 464. 0hmmeterPowerSupply I ,oo 466. 0hmmeterReference 468. InputProtection +70. 0ISPLAYASSEMBLY(Figure 7-2?) 484. DataGounter 486. Buffers 4-88.TimingCounter Figure4-10.Block Diagram,Main LogicASM Flow Chart + 1 tl-90.AlgorithmicStateMachine 4-lr 4-105Input.PolarityStorage 4-107.TransferandZeroDetect SectionIV 4113.OvedoadStorage +il5. DCSWTTCH|NGLoGrC +II7 . REFERENCESUPPLIES ll.l 18. VoltageMea$rements 4-122.RatioMeasrements(0ption080) +128 .FBONTPANELS1VITCHING 4130.POWERSUPPLIES + t +I32 . SELF . TESTFUNCTION 4-134Logic.Test,No.l +137.10V RangeZero,TestNo.2 4139.TurnoverError,TestNo.3 4141.+ ReferenceCheck,TestNo.4 7-3r) 4150.0utguardPowerSupply It-l54.Sample/HoldTriggerCircuits +158 .DATAOUTPUTOPTION021 4-160.DataMultiplexers courPursl 4-162Data.OutputSequentialLogic 4t74.REM0TEC0NTR0t0PTtoN022 l}176.Gircuitlsolation 4-178.RemoreEnable 4180.0utguardMultiplexer +184.ProgramFlag +188.ShiftRegisters 4-192. LocaURemoteFlip-Flop 4194. DauFlag 4 . 196GENERAL.PURPOSEINTERFACEBUSI/O (0PTtoN 030) 4201.BasicTheoryofGPIBl/0 Circuits 4-202.The3490AGPIBcircuitsemploytwoseparate 4-204.GPIBSystemOperation +2r +212.SAMPLE/H0tD0PTl0Nll40or045 4-216Acquire/Hold.Mode 4:220. Waveforms shown in Figure 4-31illustrate the sine wave notations indicate the events occurring during the measurementsequence'In measurements Ja+z c r 2 4-228Sample/Hold.LogicCircuits +25 ;s,t3i5'/rp,ly,ffi Page Figurb4-30.Sample/HoldMeasurementSequence j-tE . / I; rt *ai 1 . Waveformsarenotdrawnto timeo, "o,,rn"I?[lt Page SectionV Table5-1.RecommendedTestEquipment 5-C S E C T I OVN MAINTENANCE @ \ : d o - o o o 5 . 15OHMMETER.ACCURACYTESTS 5-l6.PreferredMethod 5 . 20DC.COMMON - MODEREJECTIONTEST PERFOBMANCECHECKS PEBFORMANCECHECKS 5.22.ACCOMMON.MODEREJECTIONTEST NMR= 20los 5.26.DCVOLTMETERINPUTRESISTANCETEST r-------l o o Model3490APERFOBMANGECHECKS ö ö o rrr-rrr--r] o o o o 5-28AC.VOLTMETEHINPUTIMPEDANCETEST ' e ( o ) @ L @ ' \ - - O @ - @ o o Figure5-6.AC Voltmeter Input lmpedanceTest with the Sample/Hold performance tests. Refer to Paragraph5-9 PERFOHMANCECHECKS 536. RATI0PEBF0BMANCE(0ption 080) $38. DC/DCRatioAccuracyTests S41.AC/DCRatioAccuracyTest i ) Rlo v Ranse 4 ) it l l K o PERFORMANCECHECKSModel3490A 1000kO range 1+tll i:j,.H"'," :+ r::::f,.li:r iiF:i,l'.l"ir i ü:l-rii::r:i t-.::i; FiIlLt :l ::l il i [:r I F ü t J t J l ' : : " F Address3490Ato listen,9820Ato talk.Program34904to IO,OOOkQ range " ';'t t::i'1It wARiltr{G vu ADJUSTMENTPROCEDUBES Model3490AADJUSTMENTPROCEDURESSectionV 5-73.0ffsetAdjustment $75. DielectricAbsorptionAdjustment 5:76.A dc standard(hp- 7a0B)is requiredfor this AOJUSTMENTPROCEDURES g,lqe A t 5.79.RATIOREFERENCEADJUSTMENTS ADJUSTMENTPROCEDURES Adjust efgni (Bias. Atlj.) negative 0'0005V PERFOBMANCE TESTRECORD 10.0100ov r0.05000v ro.100OOV PERFORMANCETESTBECORD(CONT'D} Range Input 1 V 1 V r 1 V r 1.0oooov PERFORMANCETESTRECORO(CONT'D} .:. ExtRet F"ngu 11; 1 g v - 1 0 REPLACEABLEPARTS T o b l e 6 - 1 . R e p l o c e q b l eP o r t s Reference HPPartNumber otv Mfr Mfr PartNumber Code orro-nnrr$$ Reference HPPartNumber otv T q 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 ) HP Part Numbel oty HPPartNumbet atv atv Qty T o b l e6 p o r t s l C o n t ' d f - 1 .R e p l o c e o b l e HPPartNumber oty T o 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 ) otyDescription Reference HPPartNumber oty Page Page DesignationHPPartNumber Numbet oty DesignationHPPart T o 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 ) Reference HP Part Numbet otv Designation T o 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 ) Reference HPPartNumbet atv Gode Page Page HPPartNumber aty aty T o 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 ) Qtv T o 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 ) Reference HPPartNumbel oty Page HPPart HPPartNumbet oty Reference HPPartNumbet otv T o b l e 6 - 1 . R e p l o c e o b l eP or t s ( C o n t ' d ) Reference HP Part Numbel T o 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 ) HPPartNumber Reference HP Part Number HP Part Number T o 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 otvDescription Figure6-1.ChassisParts P\ \*o0 Figure6-2.BindingPostAssembly HEXNUT Figure63. Switch Assembly SECTIONVII TBOUBTESHOOTINGAND C I R C U IDT I A G R A M S 7 . 13DC.ANAL0cCtRCUtTS 7-15.AZAsemblyExchange 7-17.DCAmplifierChecks Figure7-1.SwitchingInputsto A2U2 nlii Figure7-2.SwitchingOutputsof A1U401 Amplifier adiusted 7-25.ReplacementofOCR30l 7-26. If it is necessaryto replacethe referencetransis tor alsonecessaryto replaceresistors 7.40.DISPLAYTROUBTESHOOTING Table7-5.DataOutput TroubleshootingTips 7-8 mav be a defective display'The 7-57.ExternalTriggerCircuitGheck 7 . 59SAMPLE/HOLD.SERVICING 7-60.AccestoSample/HoldGircuits 7-63.0peratingthe3490AwithSample/HoldAssem-hliesRemoved 7 . 65SAMPTE/HOLD.TROUBLESHOOTINGTREES L 03490-006(M 03490€6528 o3490-27301 220047o'4 7 . 67RATIO.TBOUBLESHOOTING 7-71.AmplifierZerc0ffset 7.75SCHEMATIC.NOTES l.l------l Denotesfront panelmarkings " 3 Denotesschematicnumberon which con 7.77.LOGICGATESYMBOLS NAND GATE + 5 Table7-6.AlphabeticalListingof 34g0A Mnemonics A r u 4 o t Alu401 r_exe nrsc 'n 'ft^ 'n^ Tt ,Ll Page i1:L;gji JIIIL s $ sEIJ - *I -uiL :irsul Figure7-5.DC AnalogTroubleshootingTree 7-r317-1 L--l I ce | -co =FÄl- LJ l'l- ll l l t f ol LfT Page , , iliii#;, ,i ;_r;;rs6tl .14,iä :*,rii'.i *iii,tif6l:..it@i6 . .ffi "-*"rti,"r , Il Figure7-6.AC ConverterTroubleshootinsTree 7-1s17-t6 ; . ä Page Page Figure7-7.OhmsConverterTroubleshootingTre€ 7-r7l7-r8 t _ iub _ s!!h "jl ä ä i l e*-ä,ii *i ru*nir+lU "TT Page [El* !#W.' ü::iliiff f*tEv: ru*rffifc 00 l,; Page Page f-l f-_l Figure7-9.Lo Figure7-9.Logic TestTroubleshootingTree 'ä-'äfu _,;ljl otuu' U.T:'"",'J"',l,:,t-:t ';1;: t'tj ,o." 1 Figure7-10.Logic Clock TroubleshootingTree 7-2317-)1 *8o5Tr ts -r r@++@+f*****io us-l I- u,-l l.'l l'- l 'l---,.l l-ll't A l o U 1 . U t l ;.,,\AA& *#ll :,i ::i ;;i,:i ti'1::i.'::":: i- , ea . f :'J.'l Figure7-11.Data Output TroubleshootingTree,Option 7-2s17-26 i-------g-----+* +t* I i!-u;it Page - 1 =r^F t'"'h."'-l .::LfLr -ilLJ_LT Page Hffi3 Figure7-13.GPIBI/O TroubleshootingTree,Option030 (6äl * ü ü * * ä TTTTTT hp Porl No. 0349O Rev. B f-------t [ - o nf-l-üi .F;t Figure7-14.Sample/HoldGeneralTroubleshootingTree 't3t17-32 il---"i,l H [ l - ] 1 , , 'I A 2 Port No. O349O-66528 Rev. C ;,t:r.1i l,ffi.f-L 'JüJ F Figure7-15.Sample/HoldLogicTroubleshootingTree Page Page Page Page Figure7-16.Ratio TroubleshootingTree 't-35 A33 AS2 A31 Rearof Instrument Figure7-17.Locationof Assemblies r€ d .;;rl smc@P??q lil'iil+s ;;liüi s g pnE eeagtl * ll .i-J -::ff-"@. oooooo sf@ *EfEU Page --<eL @6'@@@@ggfggg;s@-- rzvd ööF$?f-looooooo - - - VT - - - - - -V1 -T6az ruorerzV AA 2--J ' A i l 'Y ,zl-----_l: l o z r z l $E yt) $rs*$roffiaCI -A t l ,A?fli ffi Zero glw ott,"t {'itu - ^ ^ - ^ ^ ü l l l?-rv ( F /^"'i;; -l l I u3o! ->---t l : l " L - r l - l 'n l ' l "r1 :;.:.;ä:,?ääij'O( * 9sö$ r',u l-r.o*." n i!g!"?if'iJjscaNBH POWERFROM -5v---dä-!-- -" IP*33|]3 7 1 3 1 6 t L --\------lJ sior'ra Figure7-23.SchematicDiagram,Clock and Counters "i t+*truuiit l.-i3Bl,"J-r l-rua--' I xma I nne--r LHur i 3bEi,?#'^ röüärrrr-l BrE**#'^ 5'8 l8'd',tshäl 3Yä1.^.dP Figure7-24. SchematicDiagram,Main Logic, Al il ;J ; 3 C ; E : r E i i + { +{ i + pp* @@@@@@@@@@@@ @@@@@@@*späsw: i'a;|"*;,,ilJ**io**l.Io,l ,. lffioi o ( - -- - ) ,, [**6'ffi-l { . ( - - - :- - - - ) . F [--soue.e,."oloieftil-l :( - - - ' - - - - ) '-l [-soupr-Ezro-r-oirfr Figure7-25.SchematicDiagram,DC SwitchingLogic, A 1 v @ '';,,,:t l . : 3::,i .. ..'.. ,',..oR Figure7-26. SchematicDiagram,PowerSupplies,Al, A8 7-5117-s2 |--*-l 8 roaru4oreil i=i33'SfTH[r-+: r - A Tl-: u4,uro T..,-"J - l Y, + Figwe 7-27.SchematicDiagram,Display,A3 7-s3l7-s4 = E MA|N CTRCUTTASSEMELY*"-r.t tE(03490-oro- 6650t)-u*oi t tffiJ--*orie-r*E oG 'ä;glYr {-#'-d.ir'l , l o4-f\1, Il Figure7-28.SchematicDiagram,Function,Range,and Sample Rate Switches.A5 t ll l : ? ? l l l ***re4***l t 3 l l,lu -R,B-----lTtl--R4a-n l-t-=""+t <---r oot Figwe 7-29.SchematicDiagram,AC Converter,A6 1-s7l7-s ''i-i6L_lULJi *co",c'ifl3?;5fö ,,J.[li,iBlflt {v:rx) ,vnorlrr,rn: .mJ -4.rF :tr'-Ei Page r--r I t . l U l , U A22Al Z'"'+.gntl,"*LS ' l " l .;;i '. ';,1 ,-'i wro Figure7-31.SchematicDagram, External Trigger Circuits,A8,A22, A29, A37 * J l ' " 1 'l l , r [ u ; - - - l