HP-130A-Manual 电路图.pdf

HP Archive This vintage Hewlett Packard document was reproduced with permission from Agilent Technologies preserved and distributed by Please visit us on the web ! On-line curator: Tony Gerbic RadioFans.CN 收音机爱 好者资料库 OPER.TINGNDSERVICING MNU.L ).,- OSCILLOSCOPE Serial125 HEWLETTPACKARDCOMPANY 275PaveMillR_dPolo.Ita,California,U.S. RadioFans.CN 收音机爱 好者资料库 PRELIMINARYOPERATINGINSTRUCTIONS FOR I OSCILLOSCOPE Serial125 Copyright1956byHewlett-PackardCompany Theinformationcontainedinthisbooklet isintendedfortheoperationandmain- tenanceofHewlett-Packardequipmentand isnottobeusedotherwiseorreproduced withoutthewrittenconsentoftheHewlett- PackardCompany. HEWLETT-PACKARDCOMPANY 275PAGEMILLROAD,PALO1LTO,CALIFORNIA,U.S.A. -_._- l30AOOa RadioFans.CN 收音机爱 好者资料库 .:.(lBSrTliJHAl1ISUTtHHI WHENIVEAT.SENSITIVITYI ISTUItNEDfROM11111.TOMAX, ADJUSTVERTICALPOSITIOIII-_ SETTO(OIRCT-COlIPlfDIIIPJDfOR DCSICU.LS.SETTO(ITYCOUPl.ll 11l1lJT)FORAtSICIIAlS, FOCUS INTENSITY /CAL. VERNIER HeR,Z SENSITIVITY ,.,).-, ADjUSTSlEEPTIIlE/CIlBETlEEN STEPSOFISWEEPT1MEICMISElECTOR VERNIER SWEEPTIME/eM ;_.=-,-_.JSWEEPMODE TIIIGGIt-FIlEII:ItUNINPUT VERNIER VRT.SENSITIVITY INPUT SELECTTlIlE/CIlOFIIIHRUlSlEEP (:!:5)IITHIVERNltAISETrol2CAlI REMOYESHORTlIICSAltFOR-t-it(5)1 BALANCEOINPUT.5;L?r;i;.2: ADJUSTTOSTUTSIHIATDESIRED-J.00L-_,1-_ YOlTACEOFSYIICSICIlAlOR,IFlIfSSARr.-:7L=:t!:=:1,:=_ AOJBIlllESlEEP11TH_SWEEPMODEl III ADJUSTVERTICALSfIISIT1YIHBElIEE.-1Itt STEPSOFtIERilCAI:$ENS!TMTjJSElECTOR SELECTDESIREDYRTlCAlPUT;-l SENSITIVITY(t5)11THLYERHIERISElIDIleALI SUTOICALITOCllECKSEIlSITlYITY VERtiCALINPUT.-, BALANCEDIIiPurCAliBEUSED011 1-20NY/eNRAIIGES. snTOTRICCERSlEEPFROMElfHERPOslTlvE-1-;,-t ORUCUlVSLOPEOfSlitSICNAl. I , ADJUSTTODSIAIISTArlOIlARI POSITION1KENlHORlz.SENSITIVITYI ISTURNEDfROMIIINTOMAX ADJUSTHORIZONTAlPOSITION. SHTOIINT.SWEEPITOOPERATEINTERNALSWEEP. SElECTOESIRtDHORIZONTALINPUTSENSITIVm (S4lWITHIItORLZ.!lNSITIYITY1SETTOl.cALI SETTOICALITOtHEe,SfNSIlIVITY SETTOf(OIRfCHnJPlDINPUllfill DCSleNAlS;SETTOlCAPM:ITY-COOPLfD I.PUT)fOllAtSICULS. ADJUSTHORtlOHAlSEItSITIVITTmlnN STEPSOFIHoRlz,sENSITlVlTYISELECTOR (CJf+-iI-SWEEPOR5YNCHRONIZIMCINPUTS. TOSYNCSCOPE.SETlKOAIZ.SENStTlVITVITOliNT.SWEEP! BAlANCEDINPUTCANBEUSEDONl-Z0MY/GilRANGES. 11;tt-+-REIlOVfSHORTINGBARFOR BALANCEDINPUT INTENSITY VERNIER HOA1ZSENSITIVITY ., - , :, r 10 0 ADJUSTSHPTlMlCMBET,M STPSorISWEEPTlMEltMISlCTOR VERNIER SWEEPTIME/eM IFIMTRllAlSP sn11112CAl.1 IANIER SENSITIVITY 1:- S 2.I ?.OO.,;:t:;:=_I-SELECTCHARACTEROfSYNCSIGNALOSIRED. _1:!:!:!1=L=:STTOIPRE-SET!FOR8STSYNCSTABILITY ORTOlFREE-RUN!ASOSIRD. I 130ASPECIFICATIONS _SWEEPGENERATOR INTERNALSWEEP: SYNCHRONIZATION: SYNCCONTROL: 21calibratedrangesprovideSweepspeedsfrom1I-l sec/cmto5sec/cm,accuratetowithin50/. Averniercontrolprovidescontinuousadjustmentof sweepspeedbetweencalibratedrangesandextends slowestsweeptoapproximately15sec/ern. Internal,fromlinepowerorverticalinputsignalhav- ing1/2Crnormaredeflection. External,eithercapacitivelyordirectlycoupledfrom signalsof1/2voltpeak-to-peakormore. Sweepctriggtredfromeitherapositive_ora nllllflJv.e-_t:lgrfQtriggeringvoltagelevelof externalsyncsignas1Sontinuouslyadjustablefrom -30to+30volts. Switchposition,Preset,automaticallyprovidesop- timumsyncstabilityformajorityofuses. -VERTICALANDHORIZONTALAMPLIFIERS - BANDWIDTH: SENSITIVITY: COMMONMODEREJECTION: (Balancedinputonly) INPUTIMPEDANCE SingleEnded: Balancedinput(onI,2.10, and2.0mv/cmrangesonly): OUTPUT: TYPE: DEFLECTIONPLATE CONNECTIONS: INTENSITYMODULATION: REPLACEABILITY: POWERREQUIREMENTS: SIZE: WEIGHT: Directcurrentto300kilocycles. 14calibratedrangesprovidesensitivitiesfrom1milli- vOlt/cmto20volts/ern,accuracy50/. Averniercon- trolprovidescontinuousadjustmentbetweencalibrated rangesandextendstheminimumsensitivitytoapproxi- mately50volts/ern. Rejectionatleast40db.Commonmodesignalmust notexceed1.5volts. 1megohmshuntedbyapproximately50I-ll-lf. Zmegohmsshuntedbyapproximately25IJ4J.f. CALIBRATOR FixedamplitudelOOO-cyclesquarewaveautomatically fedtoverticalandhorizontalamplifierinputswhen SwitchedtoCAL. CATHODERAYTUBE 5AQPmono-accelerator,flatface.availablewithPl. P7orPllscreen.3000-voltacceleratingpotential. Screwterminalsinrearaccessreceivewiresforcon- nectiontoplates. Terminalsinsiderearaccesstoreceive+20pulsefor blankingCRTtraceofnormalintensity. CRTbezelremoveswith150twistforreplacementof graticu1eorCRTfromthefrontpanel. CRTbezelprovidesfirmmountingforstandardoscil- loscopecameras. 115/230VAClO%.50/400cycles;approximately175 watts. 9-3/4widex15-1/4highx20deep. A. .-._- INTERNALSWEEP-INTERNALSYNCHRONlZAnON 9J-. 8 2 1 JUMPER . I , / (, 110 n+_+_-7 H-+-4 1.PlaceverticalsignalintoINPUT.Youcan useabalancedinputonthe1to20mv/cm rangesoftheVERTSENSITIVITYcontrol (2)byremovingthegroundjumperonthe INPUTterminal. 2.AdjustVERTSENSITIVITYfordesired VOLTS/CMdeflection. 3.InmostcasessetforACcoupling.See paragraph2-4. 4.PlaceexternalsynchronizingsignalaCross horizontalINPUT. 5.SwitchSYNCselectortoEXTACorDCas desired.Seeparagraph2-4. 6.SetSWEEPMODEtoPRESET. 7.SwitchHORIZSENSITIVITYtoSWEEP. 8.AdjustTRIGGERLEVELtoZERO. 9.AdjustTRIGGERSLOPEtotriggersweep onpositiveornegativeslopeofinputwave asdesired. 10.SelectdesiredsweepspeedwithSWEEP TIMEelMswitch. 2-2 EXTERNALHORIZONTAL INPUT 1.PlaceexternalhorizontalsignaltoINPUT. Balancedinputmaybeusedon1-20mv/cm rangesofHORIZ.SENSITIVITYcontrolby removinggroundjumperonINPUT. 2.Selectdesiredhorizontalsensitivity.This controlisahorizontalinputattenuatorwhen notintheINTSWEEPposition,andalliI. ternal-sweepcontrolsarede.energized. 3.Selectdesiredinputcoupling.Paragraph 2-4. 4.Adjusthorizontalpositionofsignal. 2-3 REMOVING CRTBEZEL LOCK RELEASE BUTTON BEZEL TheCRTbe.,;elcontainsthefilterandgrati- culeshields;ithasalsobeendesignedtoac- ceptoscilloscopecameraequipmentwithout adaptersofanykind.Tochangefiltersor cathoderaytubesthebe.,;elmustberemoved. 2-4 Toremovebezel: 1.Depresslockreleasebutton,andtwistbezel counterclockwiseabout15degrees. 2.Pullbezelstraightfrompanelasshown. .-.,.- ALIGNINGSCOPETRACEWITH GRATICULE 2-5 VERTICAL AMPLIFIER I HORIZONTAL AMPLIFIER +88VOLT REGULATED POWERSUPPLY +600AND-150VOLT REGULATEDPOWER SUPPLIES,TRANSFORMER ANDALLRECTIFIERS (BELOW) DEFLECTIONPLATE TERMINALBOARD +300AND +135VOLT REGULATED POWERSUPPLIES REGULATEDR-F HIGHVOLTAGE POWERSUPPLY (INSIDE) SWEEPGENERATOR, SYNCCIRCUITAND CALIBRATOR (BELOW) 4-0 SECTIONIV MAINTENANCE 4-1INTRODUCTORY Thissectio1containsinstructionsforadjustingandservicingthe BOAOSCilloscope.TheBOAisconstructedsothateachofthe majorcircuitsectionsisphysicallylocatedonasingleetched circuitboard_exceptforportionsofthepowersupplieswhich utilizethreeseparatechassis.Thematerialinthissectionis dividedasthecircuitsections,eachsectionhasacompletesetof adjustmentinstructions_andattherearofthemanual_asche- maticandavoltage-resistancediagram.Thematerialinthis sectionisasfollows: 4-2RemovingtheCabinet 4-3Connectingfor230-VoltPowerLines 4-4ServicingEtchedCircuits 4-5TubeReplacementChart 4-6IsolatingTroublestoMajorSections 4-7AdjustingtheLow-VoltagePowerSupplies 4-8AdjustingtheRFHigh-VoltagePowerSupply 4-9ReplacingandAdjustingtheCRT 4-10CheckingtheCalibrator 4.11AdjustingtheVerticalAmplifier 4.12AdjustingtheHorizontalAmplifier 4.13AdjustingthePresetSensitivityoftheSweep Generator 4-14AdjustingtheSweepGenerator 4.2REMOVINGTHECABINET The130Achassisandpanelareremovedfromthecabinetbyre- movingthetworetainerscrewsontherearofthecabinetand slidingthechassisforwardoutofthecabinet. 4-1 SERVICINGPRINTEDCIRCUITBOARDS CAUTION-, WhenservicingprintedcircuitsDONOTpushorpull wiresinsuchawayastoraisetheprintedwiringfroTIl theboard. Whensolderingleads,use50wattironorSTIlaller. Applyheatsparinglytotheleadsontheparttobere- placed,nottotheprintedwiringontheboard. Beforeinstallingnewparts,cleanholestoreceive newpartwithoutforcing.Havenewleadstinnedand ifnecessaryfluxedtoreceivesolderquicklywitha TIliniTIluTIlofheatandwithoutresidue. CDAPPLY HEATSPARINGLYTOLEADOFPARTTOBEREPLACED. REMOVEPARTFROMCARDASIRONHEATSTHELEAD. CD USINGA SMALLAWL,CAREFULLYCLEAN INSIDEOFHOLELEFTBYOLDPART. I.,tta!(la!IIII141 CDBENDCLEANLEADSONNEWPART ANDCAREFULLYINSERTTHROUGH HOLESONBOARD. CDHOLDPARTAGAINSTBOARD ANDSOLDERLEADS. DiagraTIlshowinghowtoreplacepartsTIlounted onprintedcircuitboards 4-3CONNECTINGFOR230-VOLTPOWERLINES TheBOAisnormallyshippedfromthefactorywiththedualpri- marywindingsofthepowertransformerconnectedinparallelfor useonll5-volta-clines.Thewindingscaneasilybereconnected inseriesforuseon230-voltpowerifdesired.Toreconnectthe primarywindingsofT2foruseon230voltsdisconnectthejumpers whichjointerminalsAltoA3andA2toA4.Connectajumper betweenterminalsA 2andA3.Replacethe2-ampslow-blowfuse witha1-1/4-ampslow-blowfuseandtheBOAcannowbeoperated from230-voltlineswithnochangeinoperation. 4-4SERVICINGETCHEDCIRCUITS Figure4-2illustrateshowtoreplaceelectricalpartsonetched circuits. Whenservicingetchedcircuits,DONOTpushorpullwiresin suchawayastoraisethewiringfromtheboard. Whensolderingleadsontheetchedboard,usea50wattironor smaller.Applyheatsparinglytotheleadsontheparttobere- placed,nottothewiringontheboard. Beforeinstallingnewparts,cleanholetoreceivenewpartwith- outforcing.Havenewleadstinnedandifnecessaryfluxedtore- ceivesolderquicklywithaminimumofheatandwithoutresidue. 4-5TUBEREPLACEMENTCHART ThefollowingchartlistsallthetubesintheBOAwiththeirfunc- tionsandadjustmentsrequiredwhenreplacingtubes.Theheaters ofsomeofthetubesinthel30Aareoperatedinseriesfroma regulatedd-cvoltageobtainedfromtheLow-VoltagePowerSupply. ThisseriesheaterstringisshowninonepieceontheLow-Volt- agePowerSupplyschematicdiagram;theactualconnections througheachcircuitareshownindividuallyontheschematicof thecircuit.Whenreplacingtubesduringtroubleshooting,ifone oftheseriestubesispulled,itwillturnoffallothertubesinthe string. 4-2 DESIGNATION VI V2 V3 V4 V5 V6 V7 V8 V9 VIO VIi VI2 V13 Vl4 VI5 Vl6 Vl7 VI8 Vl9 V20 V21 V22 V23 V24 V25-V26 V27 V28-V29 V30 V31 V3Z V33 V34 SR2 TUBE TYPE 12AU7 6211 12AT7 6BQ7 12AU7 6211 12AT7 6BQ7 6BQ7A 12AT7 6BQ7A 6BC7 6AW8 12AX7 12AU7 6BQ7 6AQ5 lX2B lXlB 6BQ7A 5AQP 12B4 6BH6 6BW4 12B4 6AW8 12B4 6BH6 6X4 IZB4 6BH6 5651 212-122 TUBEREPLACEMENTCHART FUNCTION VERT.AMPL. PhaseInverterAmplifier DifferentialAmplifier DifferentiaiAmplifier DifferentialAmplifier HORIZ.AMPL. PhaseInverterAmplifier DifferentialAmplifier DilferentialAmplifier D,fferentialAmplifier SWEEPGENERATOR TriggerAmplifier TriggerGenerator SweepStart-StopTrigger a.DiodeClamp b.IntegratorSwitch c.IntegratorSwitch a.IntegratorCathodeFollower b.FeedbackIntegrator a.RetriggeringHoldOff b.RetriggeringBiasControl a.GateOutCathodeFollower b.Clamp CalibratorMultivibrator HIGHVOLTAGEPOWERSUPPLY Oscillator HighVoltageRectifier HighVoltageRectifier ControlTube CRT bOO-voltSeriesRegulator 600-voltControlTube 300-voltRectifier 300-voltSeriesRegulators a.300-voltControlTube b.I35-voltCathodeFollower +88-voltSeriesRegulators +8a-voltControltube -150-voltRectifier -150.voltSeriesRegulator -150-voltControlTube ReferenceTube +88-voltRectifier 4-3 CHECKOR ADJUSTMENTSNECESSARY AdjustBalGainandC23(para.4.11) AdjustBalGainandC23(para.4-11) AdjustGain,C23andC21(para.4-11) AdjustGain,C23andC21(para.4-11) AdjustBal,GainandC59(para.4-12) AdjustBal,GainandC59(para.4-12) AdjustGain,R96,C49, C53,C55, C57,C59(para.4-12) AdjustGain.R96,C49.C53,C55, C57,C59(para.4-12) Noadjustmentrequired Noadjustmentrequired AdjustPreset,SweepLength (paras.4.13and4-14) Noadjustmentrequired CheckSweepCalib.(para.4-14) AdjustPreset(para.4-13) Noadjustmentrequired Noadjustmentrequired-Check Symmetry Noadjustmentrequired Noadjustmentrequired Noadjustmentrequired ReadjustHighVoltage(para.4-8) AdjustgainofVERT.andHORIZ. amplifiers(para.4-11and4-12) Noadjustmentrequired Noadjustnoentrequired Noadjustmentrequired Noadjustmentrequired NoadjustmentreqUired AdjustL.V.Supplyifnecessary (para.4.7) Adjust.L.V.Supplyifnecessary (para.4-7) AdjustL.V.Supplyifnecessary (para.4-7) AdjustL.V.Supplyifnecessary (para.4-7) AdjustL.V.SupplyifneCeSsary (para.4-7) AdjustL.V.Supplyifnecessary (para.4-7) AdjustL.V.Supplyifnecessary (para.4.7) 4-6ISOLATINGTROUBLETOMAJORSECTIONS Inanycaseoftroubleshooting.attemptoperationofthevarious sectionsoftheoscilloscopeanddeterminewhichmajorsection containsthecircuitfailure.Proceedinthefollowingmanner. a.ChecktheLow-VoltagePowerSupplyvoltagesasdescribed inparagraph4-7. b.ChecktheHigh-VoltagePowerSupplyvoltagesasdescrib- edinparagraph4-8.TurnbothVERT.SENSITIVITYand theHORIZ.SENSITIVITYinputselectorstooff.andcenter thepositioncontrolstoobtainaspot.Notetheactionof theintensityandfocuscontrols.Ifthespotdoesnotappear, measurethedeflectionplatevoltages. c.ChecktheVerticalAmplifierbyswitchingtoCAL,andnote theresultantdeflectionwhichshouldbeexactly6centi- meters. d.ChecktheHorizontalAmplifierinthesamemannerasthe VerticalAmplifier. e.ChecktheSweepGenerator.WiththeSWEEPMODEcon- trol.attemptfree-running;thensettostopthefree-run- ning. Whenadefectivesectionisfound.seethatallthetubesare lighted;checkbyreplacementorwithatubechecker;thenmeas- urevoltages.RefertotheVoltageResistanceDiagramsandthe TubeReplacementChartforassistancewithchangingtubesand measuringvoltagesandresistancesineachcircuit. Thetwosidesofthedirect-coupled,push-pullcircuitsarenorm- allybalancedandcausethespottobestationaryinthecenterof thescopescreen.Afaultineithersideusuallyunbalancesthe circuitandcausesthespottomoveoffthescreen.Tobringthe spotback.shorttogetherthecontrolgrids(ortheplates)ofthe twosidesofonestagestartingatthelaststage.Thiseliminates signalsofalltypes,d-cunbalance.jitter,etc.whichoriginate priortotheshortedpoints.Ifshortingthetw0halvesofastage togetherdoesnotbringthespotonthescreenandholditmotion- less,asubsequentcircuitisfaulty.Bycontinuingthisprocess throughtheamplifiertroublecanbeisolatedtoasmallcircuit area. 4-7ADJUSTINGTHELOW-VOLTAGEPOWERSUPPLIES Thecomplete.low-voltagepowersupplyprovidesfive.separate- ly-regulatedoutputvoltages:-150vdc.+88vdc,+135vdc.+300 vdcand+600vdc.Thelow-voltagesupplieshaveonlyone 4-4 R268 LOWVOLTAGEADJ.-_-l.-L R210 ASTIGMATISM-1 6,3VACFORCRT-+-+-I C137 (COMMONTERM.) GROUND C37A MEASURE+300VOLTS C137C MEASURE+88VOLTS C137B MEASURE+135VOLTS C140 (COMMONTERM.) MEASURE -150VOLTS CI38 MEASUREOUTPUT FROMSR2 CI34 MEASUREOUTPUT- FROMV24 C131 MEASUREOUTPUTJ FROMSRI C133 MEASURE+600VOLTS-iI:-.LJ,.fI ONPOS, TERM. +300VOLTSONNEG.TERM. C140A MEASUREOUTPUT FROMV31 C140B GROUND FIGURE403POWERSUPPLYMEASUREMENTPOINTS adjustmentwhichsetsthe+88-voltfilamentsupply.Thereare noseparateadjustmentsforthe-150-volt,+135-volt,+300-volt and+600-voltregulatedsupplies.Alltheremainingvoltagesde- penduponcorrectadjustmentofthe+88-voltsupplyandalso uponhavingthecorrectoutputvoltagefromthe-ISO-voltsupply. Allregulatedvoltagescanbeconvenientlymeasuredontherear, left-handcornerofthe130A,seeFig.4-3.Toadjustthe+88- v