HP Car 3490A manuals
Car Audio and Video > Car Stereo System
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1 HEWLETT PACKARD2 HEWLE"WPACKARDCERTIFICATIOtII W A R R A ] T TAYT D A S S I S T A I T C E 3 MUtTIM ETER4 TABLEOFCONTENTS5 TABLE0F C0NTENTS(Gont'd)6 rABLEOFCONTENTS(Cont,d)7 Tableof ContentsModel34904LISTOFILLUSTBATIONS Figure Line VoltageSelection . . .2-l 4-23.WaveformsIllustrating . . . . . . . 2 - l A c q u i r e / H o l d M o d e M o d e l 3 4 9 0 A D i m e n s i o n s 4-24.SimplifiedDiagramand Installationof IsolatedBCD Output andRemoteOptions 4-25.SimplifiedDiagramof S/H CircuitB 4-26.Aebctric AbsorptionCompensation RemoteInput Connections,Option 022 4-27.Sample/HoleLogicBlock Diagram 4-28.Block Diagramof S/H Timing InterfaceBusCables a n d T r i g g e r C i r c u i t s 9. GeneralPurposeInterfaceBusConnections.. . . .2-J 4-29.Sample/HoldTriggerTiming -10.Tigger Connections,GPIB Option 030 4-30.Sample/HoldMeasurementSequence.. .. -...+28 -lI . TriggerConnectionsS/H Option 045 4-31.Sample/HoldSimplifiedDiagramand Front and RearPanel M e a s u r e m eSnet q u e n c e Connectingthe Guard AC Voltmeter High Frequency A c c u r a c y T e s t ExternalTriggerSequence(Option020) Option021 Printout AC Common-ModeRejectionTest RemoteProgramSequence(Option 022) Positionof JumperWireson Outguard DCVoltmeterlnputResistanceTest Mother BoardAssemblvA31 Timing Diagram,3490A Addressedto Listen . . 3-lI Sample/HoldResponseTest Timing Diagram,3490A Addressedto Talk ExternalReferenceInput -10.ExampleofMarked CardProgramming R e s i s t a n c e T e s t -1l.Typical Responseto a Step Locationof Adjustments I n p u t V o l t a g e S t a n d a r d 3 4 9 0 A - 1 2 .D i $ t i z i n g a R a m p -10.Locationof Sample/HoldAdjustments.......5-17 -13. UsingDelayed-SweepOscilloscopein - l l RampLinearityMeasurements 6-1.ChassisParts -14.Filter Output Measurement . . . .3-2O G 2 B i n d i n g P o sAts s e m b l y -l5. Measurementof a StepInput S w i t c h A s s e m b l y . . . . . . G 3 - 1 6 .R a t i o l n p u t C o n n e c t i o n s SwitchingInputsto A2U2 4-1. Dual-SlopeIntegration . . . . . 1 . : 7 - 3 . S a m p l e / H o l d A s s e m b l y . . . . 7 - l l 1 7 - 1 MeasurementSequence iL'l-5 DC Ana1osTroubleshootinsTree .]-1317-14 SimplifiedDiagram,IntegratorCircuits AC ConveiterTroubleshoolingTree . . . . . i,-1511-16 SimplifiedDiagram,AC Converter OhmsConverterTroubleshootingTree . . .7-17 . . . . | . - 1 9 1 7 - 2 -8.Block Diagram,Clock and Counters Loeic TestTroubleshootingTree -10.Block Diagram,Main Logic -ll. DataOutput TroubleshootingTree A S M F l o w C h a r t o p t i o n } 2 l -ll. Block Diagram,Main LogicCircuits -12.RemoteTroubleshootingTree -12.Block Diagram,QualifierMultiplexer option 022 -13.SimplifiedDiagram,Reference -13.GPIB I/O TroubleshootingTree and RatioCircuits Option030 -14.SimplifiedDiagram,External -14.Sample/HoldGeneralTroubleshooting ReferenceCircuits Tree -15.Input BiasCompensation -15.Sample/HoldLogicTroubleshooting 4 - 1 6 .R e f e r e n c e P o l a r i t y L o g i c T r e e - 1 7 .L o c a t i o n o Af s s e m b l i e.s -19.RemoteControlTimingDiagram -18.3490A BlockDiagram ( O p t i o n - 1 9 .R e f e r e n cDee s i g r a t i o n. .s 0 2 2 ) -20.T1'picalBusSystem -20.SchematicDiagram,DC Amplifier -31.SampleiHoldCircuirPosition andSwitchingCircuits,Al, A2 -1-ll.\\'aveforms -21.SchematicDiagrant,Integratorand Illustrating T r a c k ' H o l d \ { o d e . . + 2 T r , r o D e t e c t C i r c u i t s.,.A. l LIST0F tLLUSTRAT|0NS (Cont,d) Diagram :. .... äl',i_]l 7-?7l+e;atic ?ror"raticDagram 222. l ACConverter,.S . .7_5717-Sg SchematicDiagram OhmsConveri"r X--' .7_5917_60 p;;;;; 7. schem.li;;i;;;;; ii TIST OFTABTES 8 ohil"a;;a;;;;i: . il2 - : 3-8.Abti,ty;iöör6l"rä,oic,iirl "'3-21 ACAdiG;;üffi Porariry;R;,t"ü'ä;;.;;; .....frz 9 GENERATINFORMATION11 i I;IBBBBVlo . zs*o . oo 12 (Cont'd)Table1-1.Specifications t o .oo7 .005 .0m .o07 .oo5 100v '10 13 Table1-1.Specifications(Cont,d.)r 1.00fi)v 10.q)0v 24hours(23o r 10c) r {0.01+0.0151 (23o c 30.days (0.01 + 0.015) 90 days(23oc r so c) r (O.01+ 0.015) (239 (0.02 6 months C r SoC) 1 year1230c r so cl (o.02 50oC)r t !O.OO2% ol Table1-2.GeneralInformation l-5 14 Model34904Table1-2.Generallnformation(Cont'd.) vs/n =vin+ Kl _f,r dVs/u vin = vs/H - rl dvs/H t-6 15 S E C T I OtNlINSTATI.ATIONAND I N T E R F A C E16 2 . 16INSTALLATION2-17.BenchUse 2 . 21INSTALLATION.OFOPTIONS 2-23.lsolatedData0utput0ption021(-hp-111ZlAl 2-25.fsolatedBemote0ption022(-hp11122A1 17 Model3490ASectionIl2-27.Option050andOption060 2 - 29INTERFACE.CONNECTIONS 2-30.Data0utput0ption021 2-32.RemoteGontrol0ption022 18 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 19 3 9 H ; ; 5 E E i Fä - j = ! 9 i l E F ! ! A 1 0 0 0 v , 1 0 0 0 k o L 10,000ko Figure2-6.RemoteInput Connestions,Option 20 2-34.RearInput2-36.GeneralPurposelnterfaceBusConnections 21 Table2-2.GeneralPurposeInterfaceBusConnectorsGPIBBUSCONNECTORJl2 9 9 9 9 f Figure2-9.GeneralPurposelnterfaceBusConnections 22 T R I G G E RC O N N E C T OJRlo 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 2-42.Sample/HoldConnections,0ption040/045 Option 045. Figure 2-44.Sample/Hold with BCD Remote Expand Option TRIGGERCONNECTbRJl1 :H F o o o o z z Figure2-11.TriggerConnectionsS/H Option 23 s7-30360-37s)2 . 46 .REPACKAGINGFORSHIPMENT 24 SectionIIIFigure 31. Front and RearPanel 25 S E C T I OINIIO P E R A T I NI NGS T R U C T I O N S26 3 . I7 . GENERALOPERATINGINSTRUCTIONS3-18.Turn-OnandWarm-Up 3-20.Guarding 3-24.FloatingMeasurements 27 3-26.0verrangeMeasürements3-28.OverloadIndication 3-30.BangeIndication 3-32.FunctionIndication 3-34.Autoranging 3-36.ManualTrigger 3.38.SELF.TESTOPERATION +o4.oo24 +0.20024 +.0too24 +0.09032 +to.oo24 +200.024 +4000.24 +80002.4 +6000.xxOL SelectRANGE2. Thedisplayshouldbe e.SelectRANGE 3. Differencebetween+ and - readingsshouldbe (8 counts -10.0000V. Displayshouldbe + 09.9990+ (16 counts dc standarderror).Thischecksthe+ ReferenceIfthe 3490A shoüld dmplifier zero. Return RATIO switch to INT REF positionandremoveshortfrominput g. SelectRANGE5. Displayshouldbe000.000t t5 'counts verifyingthe0.1V rangezero -10.0000V.Displayshouldbe - 1000.00I (35 counts dc standarderror). This ehecksthe dc input SelectRANGE 7. Short fl SIGNAL terminals. Dsplayshouldbe 3-40.DCVOLTAGEMEASUREMENTS 341.For optimum accuracyof measurementson the .l V range,first shorttheinput terminalswith a copper 28 AlR4293-42.DCSampleRateandResponseTime Table 3-2.SampleRateand ResponseTime 3-44.Input Resistance Input resistancein the dc function is greaterthan 3.46.ACVOLTAGEMEASUREMENTS limL measurements 3-48.ACSampleRateandResponseTime -3-49.Thesamplerate and responsetime for ac voltage measurementsareshownnTable 3-50.FrequencyBange 3-52.Input lmpedance (90pF 3-54.HarmonicDistortion presentin the Table3-3.Distortion Error o.099 3.56.RESISTANCEMEASUREMENTS 3-57.When the 3490A is making resistancemeasure cause display efn+zq has the gain accessto the adiustment 3-58.InputConnections Figure3-3.Ohmmeterlnput Connections 3-60.0hmsSignalVoltageandCurrent Table34. OhmmeterCurrent 3-62.0hmmeterSampteRateandBesponseTime 3_-63.Ohmmeter sample rates and responsetimes are shownin Table3-2 3-64.EXTERNALTRtcGER(Option020) The capability either the connector.In order to Sample Low can 29 Pilä:::",----__1_rFigure3-4.ExternalTriggerSequence(Option 020) 3-66.DATA0UTPUT(Option021) measurement function and overload output is and triggering. Figure 2-5shows the Data Output No 50-pin nection to -hp-digitalrecorders 3-68.OutputSignalsandLevels level= + level =0.3V + print 10 Output Assembly true 30 3-77.InputSignalRequirementsL *"nn 3-71.InputSignalsandLevels 3-73.Data0utputlsolation 3 - 75REMOTE.C0NTROL(0ption022) 3-79.0utputSignals 3-83.'RemoteGontrol0fTestFunction 3-85.RemoteControllsolation 31 3 - 87GENERAL.PURPOSEINTERFACEBUSI/O (0ption32 3-101Talk.0nly(NoController)3-103GPIB.Controlof3490A 33 Table3-6.AddressCodes'to7 r sampling with the 191-ul followed F2R4S1T2MlE 34 Table3-7.ProgramCodesHold line may be _ i - l Figure3-9.TimingDiagram,3490AAddressedto Talk outputted in the following format: (Example listing: NDCfXXXXXXE-Y) StatusCodeAlpha NNormal Operation OL Overload R Ratio Mode S Sample/HoldMode RS Ratio and Sample/HoldMode Function Code AC AC Volts DC DC Volts KO Kilohms T Test +PositiveInput or PositiveRatio -NegativeInput or NegativeRatio xX)c()ü Six digits, most significant digit first 36 xX)c()üEExponentIdentifier Polarity of Exponent YExponent(RangeDigit) C R CarriageReturn LF Line Feed "l "0 "0") 37 OrPR'Nrr@[STORETo haltprogram,press sroPl 1 0 CMD"?U6 20 OUTPUT(13,30)..M3R7F@E"; 38 L-J3Q FORMATB 3-136Controlby.MarkedCardProgrammer c\tD"?u6",.. TlE",, . ?5V 39 rffi'slisli r.l.i...l*jiiä='8ffifr349OA PRoonnvr lrrruE],'ir E i r i r a l r , 2 t o G 4 o 6 r : 0 6 t t o 3-139SAMPLE/H0LD.MEASUREMENTS(0ption040or045) 3-140Definition.ofSample/HoldTerms 3-l5 40 3-152Special.S/H0peratingGonsiderations3-156Guard.ConnectioninSample/HoldMeaurements 3-158Input.SignalLimitations 3-160Sample/Hold.TriggerSignalRequirements 30v/s 3000v/s 41 3-165Initiating.Sample/HoldMeasurement3 - t 42 t o3-173Using.theTrack/HoldMode 43 I A r3-r9 44 v s - v eT s - T a Vc-vs 47 SECTIONIVT H E O ROYF O P E R A T I O N48 Ftgure4-2.BasicDiagramand Operation415. Display ,1-16 (Test "overload 4-17.RangeandFunctionControl $aph4-196) +19 .DCANAL0GCIRCUITS 421. lnputAttenuator 49 +23. DCAmPlifier+25. OCAmplifierGain 4-27.SwitchingCircuits 4-29.BoottrapCircuit 4-35.LeakageGontrol 4-37.DCAmplifierAutoZero '*'{t i-----}...'otu''i , :l;s, :y;s 50 i'Xktt 51 Figure4-4(b).MeasuibmentSequenceNotes4.39.INTEGRATORCIRCUITS 440. Dual-SlopeIntegration 442. IntegratingAmplifier 52 L44. x 20Amplifier446. ZercDetectAmplifier 4 . 52AC.CONVEBTEB 4-54.ACAttenuators 4-56.ConverterAmplifier 53 4.60.OHMSCONVERTER4-62.CurrentSource 464. 0hmmeterPowerSupply 54 I ,oo466. 0hmmeterReference 468. InputProtection +70. 0ISPLAYASSEMBLY(Figure 7-2?) 471. DisplayUnits 4-79.DecimalsandAnnunciators 473. ScanGenerator 4 . 81 .L0GrCC|RCU|TS 4-82.Clock 55 484. DataGounter486. Buffers 4-88.TimingCounter 56 Figure4-10.Block Diagram,Main LogicASM Flow Chart+ 1 57 tl-90.AlgorithmicStateMachine4-lr 58 4-105Input.PolarityStorage4-107.TransferandZeroDetect 59 SectionIV4113.OvedoadStorage +il5. DCSWTTCH|NGLoGrC +II7 . REFERENCESUPPLIES ll.l 18. VoltageMea$rements ,rtl +REFsENsE 60 4-122.RatioMeasrements(0ption080)61 +128 .FBONTPANELS1VITCHING4130.POWERSUPPLIES + t 62 +I32 . SELF . TESTFUNCTION4-134Logic.Test,No.l +137.10V RangeZero,TestNo.2 4139.TurnoverError,TestNo.3 4141.+ ReferenceCheck,TestNo.4 4-142Tlnslest.comparesthevoltageatthe+ RefFET +143.0.1VRangeZero,TestNo.b 4145.x .01Atten.x, 100Gain,TestNo.6 4147.0hmsReference,TestNo.7 +149.BCDREMOTEEXPAND0PTt0N020(Figure 63 7-3r)70 Ja+z72 ;s,t3i5'/rp,ly,ffi74 Figurb4-30.Sample/HoldMeasurementSequencej-tE . / I; rt 75 *ai1 . Waveformsarenotdrawnto timeo, "o,,rn"I?[lt 77 SectionVTable5-1.RecommendedTestEquipment 5-C 78 S E C T I OVNMAINTENANCE PEBFORMANCECHECKS 5.22.ACCOMMON.MODEREJECTIONTEST NMR= 20los 5.26.DCVOLTMETERINPUTRESISTANCETEST S24.ACNORMAL.MODEREJECTION TEST 81 r-------lo o Model3490APERFOBMANGECHECKS 82 ö öorrr-rrr--r] o o o o 5-28AC.VOLTMETEHINPUTIMPEDANCETEST $30.SAMPLE/HOLDPERFORMANCE (0ption040/045) PERFORMANCECHECKS 83 ' e( o ) @ L@ ' \ - - O @ - @ o o Figure5-6.AC Voltmeter Input lmpedanceTest with the Sample/Hold performance tests. Refer to Paragraph5-9 $32. Sample/HoldBC Mea$rement AecuracyTest Connect Guard to Input Low or damageto the instrument mav result b.Connect dc standardbetweeninput High and Low terminals Select3490A rangesand dc standardpositiveand negativeoutputs listed in Table Table5-6.Sample/HoldDC AccuracyCheck connäct StretchedPulseOutput (J7 pin l0) to External Enclode(J7 pin 28) d.Set SAMPLE/HOLD to ACQUIRE/HOLD and repeatstepc $34. Sample/HoldResponseTest l80C/l80lAll82lA) within Output from pulse f,. Conne''r -r490A ha: .1 ms/div.,Delayedsweepto I ps/div Adjust delay so that intensified trace begins approximately125ps after 84 PERFOHMANCECHECKS536. RATI0PEBF0BMANCE(0ption 080) $38. DC/DCRatioAccuracyTests S41.AC/DCRatioAccuracyTest 5-43.ExternalReferenceInputResistanceTest 5-45GPIB.0PEBATIONALCHECK(0ption030) 85 i )86 Rlo v Ranse4 ) 87 it l l K oPERFORMANCECHECKSModel3490A 1000kO range 88 1+tll89 i:j,.H"'," :+ r::::f,.li:r iiF:i,l'.l"iri ü:l-rii::r:i t-.::i; FiIlLt :l ::l il i [:r 1 +'t-:t..-:+I .-l'lF lir1 "i'..".; ili:::4 l:r,ü,"1 Hfi " l Address3490Ato listen,9820Ato talk.Program3490Ato 100kO range "''i:'rl,Ll L:t,lIt [i:::xtHl Address3490Ato talk,982OAto listen t::f'l " {'r,,,r" li I "! t::l It l; Address34904 to listen,9820Ato talk.Program3490Ato 1000kO range i':Ilhl :i,:;i'+ li 1' l":::;:I ::::l ;:t F I l. +.r".:1!t:':ii .."t|',]l-,,i:lt .i:f ijl.".,itjil::rI i i:rfi:"1',' :i g I'tj;tti:ilili':'"l ":,1:1 [: It:::; I :;l I .-l1,1t"'|::i:,..| ["iIlEl I :il.+I I 1;: r::::iI ::i i 1r"r*:+t::i ,.-tf,1Frjtl 90 I Fü t J t J l ' : : " F Address3490Ato listen,9820Ato talk.Program34904to IO,OOOkQ range " ';'t t::i'1It l-i h" i r:f,lIr " ';'i"5i 1.+r::i " L f i i , ; ' ; 'I:'l; 5-l3 91 wARiltr{G92 vu95 g,lqeA t 5.79.RATIOREFERENCEADJUSTMENTS 96 ADJUSTMENTPROCEDURESAdjust efgni (Bias. Atlj.) negative 0'0005V h. Repeatstepsa through g until all readingsare REF termi nals. Set INT REF, FUNCTIONto -to Higfr,+ to Low'Note 1mV/hr, to INPUTterminals 3490Areading Connectdc standardto EXT REF terminalsand setstandard to negative n.ReduceEXT REF voltageto l/10 the voltage INPUT equalto the readingin stepn. @olarityshouldbe - for both readings.) p.Repeatstepsj through o until all readingsare correct q.Connectmercurybatteryto IMUT terminals,- to HIGH,+ to LOW set s.Set RATIO switch to EXT REF lOV. Adjust Al3Rl4 (10V Adj) for displayof AlAlR3lT C Refl to obtain this condition. Record bothreadings(afteradjustment) v.Set RATIO switch to EXT REF l0V. Apply 10.0000V to EXT REF terminals. Readingswill alternate+ and w.AdjustA13Rl9 (Offset301) for positivedisplay" equalto (positivereading,stepu) + (positivereading,stepv) s-59 NOTE 97 PERFOBMANCETESTRECORD 10.0100ov r0.05000v ro.100OOV stt 11.0oooov 110.O0OOV lmo .gggz 0{1.9990 't.00125 01.oo35 t.rtj:..::..:: tr s9.86 98 PERFORMANCETESTBECORD(CONT'D}Range Input 1 V 1 V r 1 V r 1.0oooov 1 0 v r 1 0 v I 10.oo00v 100v r 100v r 50.oo00v 1000v 1000v r 1 V r o.10000v r l.ff)OooV ! 10.oo(nv r 10.oo00v 1 50.ooo0v 1 100.ooov r loo_ooov I 50o.ooov r 10fi).00v r0.001v r 0.oo1v 1 0 V lO.V l O V 1 0 l o . O 0 0 0 0 1.OO000v . ü ) O 0 0 1.0qn0 1.OO000V . 0 0 0 0 O 5.0OO0OV + 1 O . O 0 + 1 2 . O O O 10.o018 99 PERFORMANCETESTRECORO(CONT'D}.:. ExtRet F"ngu 11; 1 g v - 1 0 t.ooooov t 0 10.ü)oo 10.o@o 100 REPLACEABLEPARTS130 P\ \*o0Figure6-2.BindingPostAssembly HEXNUT Figure63. Switch Assembly 131 SECTIONVIITBOUBTESHOOTINGAND C I R C U IDT I A G R A M S132 7 . 13DC.ANAL0cCtRCUtTS7-15.AZAsemblyExchange 7-17.DCAmplifierChecks 133 Figure7-1.SwitchingInputsto A2U2nlii Figure7-2.SwitchingOutputsof A1U401 Amplifier adiusted a.'Set 3490A FUNCTION to TEST, RANGE to 2, SAMPLE RATE to FAST b.Connecta clip leadacrossA2C3 c.Adjust AlR522 for a display of +.000010 to 'l-22.DCAmplifierSwitchingGircuits "OFF ..ON t-3 134 7-25.ReplacementofOCR30l7-26. If it is necessaryto replacethe referencetransis tor alsonecessaryto replaceresistors and:t5 which are eCR30l 7-21A. -to-C0NVERSt0NDCtBCUtTCHECKS 7. 3I .INTEGRATOR TROUBLESHOOTING -uoriuge 9Jt:qq.i" at a higher+ 17y ,upprv e209 CONVEBTER 7 - 37OHMS. CONVERTEBTROUBLESHOOTING 135 7.40.DISPLAYTROUBTESHOOTINGTable7-5.DataOutput TroubleshootingTips 7-8 mav be a defective display'The nuäerical display most easily a known goodunit Accessto the gained securingthe guardshield 742 . LOGICTBOUBLESHOOTINGSUGGESTIONS 743.Severalmicrocircuits in the logic section may be checked device "Q "D '745 7 . 48DATA.OUTPUTTROUBTESHOOTING (0ption021) 7 . 50REMOTE.CONTROLTROUBLESHOOTING (0ption022) 7-52cPlB.TROUBLESH00TtNc(0ption030) 7-53.GeneralGhecks 7-55.TroubleshootingMethod 0349G60613 46532, -66533,-66534and-66536),and which are indi 136 7-57.ExternalTriggerCircuitGheck7 . 59SAMPLE/HOLD.SERVICING 7-60.AccestoSample/HoldGircuits 7-63.0peratingthe3490AwithSample/HoldAssem-hliesRemoved 7 . 65SAMPTE/HOLD.TROUBLESHOOTINGTREES 137 L03490-006(M 03490€6528 o3490-27301 220047o'4 Figure7-3.Sample/HoldAssembly 138 7 . 67RATIO.TBOUBLESHOOTING7-71.AmplifierZerc0ffset 7.75SCHEMATIC.NOTES l.l------l Denotesfront panelmarkings " 3 Denotesschematicnumberon which con p. A Referto manualbackdating,SectionVIII 139 7.77.LOGICGATESYMBOLSNAND GATE + 5 140 Table7-6.AlphabeticalListingof 34g0A MnemonicsA r u 4 o t Alu401 r_exe nrsc Y19 r-r'vs Yl6 r-roc ilr.are u401 xMre u21 xrvrrC u2t lore lorn u4o1 r-orurn ssB 1-5nc r,!r usnc ulo r_spr usse lrcr uto Hrcz srca Hrca2 Hrrs u16 lroru -t=,: r t- ) iaF{eV-pF 141 'nTt l = l" , ' r l - l t - l .TT - l 'ft Tl-l 143 i1:L;gji144 JIIIL169 r@++@+f*****io171 ;.,,\AA&172 *#ll178 .::LfLr197 .;;rlsmc@P??q lil'iil+s ;;liüi s g pnE 198 eeagtl * ll199 *EfEU202 ööF$?f-looooooo203 - - - VT - - - - - -V1204 -T6az205 ' A i l206 'Y$Eyt) Figure7-20.SchematicDiagram,DC Amplifier and SwitchingCircuits,Al , y'^2 207 $rs*$roffiaCI -A208 t l209 ,A?fli ffi211 ott,"t{'itu - ^ ^ - ^ ^ ü l l l?-rv ( F 8\4 €-----r V^ ffieV pt 212 /^"'i;;213 -l lI u3o! ->---t l : l " L - r l - l 214 'nl ' l "r1 :;.:.;ä:,?ääij'O( * 9sö$ r',u ;'l nil;;;'ilji 217 "i t+*truuiit218 l.-i3Bl,"J-rl-rua--' I xma I nne--r LHur 219 i 3bEi,?#'^220 BrE**#'^221 5'8l8'd',tshäl 3Yä1.^.dPFigure7-24. SchematicDiagram,Main Logic, Al 222 il ;J; 3 C ; E : r E i i + { +{ i + pp* @@@@@@@@@@@@ 223 i'a;|"*;,,ilJ**io**l.Io,l,, [**6'ffi-l 225 '';,,,:t232 Y, +Figwe 7-27.SchematicDiagram,Display,A3 7-s3l7-s4 233 = EMA|N CTRCUTTASSEMELY*"-r.t tE(03490-oro- 6650t)-u*oi t tffiJ--*orie-r*E oG 'ä;glYr 234 {-#'-d.ir'l235 , lo4-f\1, IlFigure7-28.SchematicDiagram,Function,Range,and Sample Rate Switches.A5 t ll l : ? ? l l l FHI tjfi R41_l---c25 lul ,F rc?zI i t'l =sÄl-[--l t-i-] i l + + | l u 6 D 236 ***re4***ll,lu-R,B-----lTtl--R4a-n l-t-=""+t . - - '- -t-t -i* l l " l t ? Y t | I-I-: l-sJ tt t l k rilf [A6T* .*""; ;r*.*' *;-..u V. <---l ,T V, ^cK+ 237 <---r240 ''i-i6L_lULJi*co",c'ifl3?;5fö ,,J.[li,iBlflt {v:rx) ,vnorlrr,rn: Hvr.cNn.Norr no*J 241 .mJ247 * Jl ' " 1 'l l , r [ u ; - - - l u r l l u e l ? i ; e E c r ' A :..i ,::,1t_ ,,3-l l-ur-l A I 5 A hp eortNo.0349o-665t5 . A t 'l---lr l l l T J l J J l
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