HP-140A-Manual-SNprefix-326 电路图.pdf

HP Archive This vintage Hewlett Packard document was preserved and distributed by Pleasevisituson the web! Scanned by on-line curator: Tony Gerbic * For FREE Distribution Only * RadioFans.CN 收音机爱 好者资料库 o If - HELETT-PACKARDCOMPANY 140A OSCILLOSCOPE - o )0 RadioFans.CN 收音机爱 好者资料库 CERTIFICATION THEHEWLETT-PACKARDCOMPANYCERTIFIES THATTHISINSTRUMENTWASTHOROUGHLY TESTEDANDINSPECTEDANDFOUNDTO MEETITSPUBLISHEDSPECIFICATIONSWHEN ITWASSHIPPEDFROMTHEFACTORY. FURTHERCERTIFIESTHATITSCALIBRATION MEASUREMENTSARETRACEABLETOTHE NATIONALBUREAUOFSTANDARDSTOTHE EXTENTALLOWEDBYTHEBUREAUSCALI- BRATIONFACILITY. RadioFans.CN 收音机爱 好者资料库 01638-1 OPERATINGANDSERVICEMANUAL MODEL140A SERIALSPREFIXED:326- OSCILLOSCOPE COPYRICiHTHEWLETT-PACKARDCOMPANY1963 1501PAGEMILLROAD,PALOALTO,CALIFORNIA,U.S.A. Prioted:JULY1963 Model140AContents TABLE OF CONTENTS Section IGENERALINFORMATION 1-1.Description. 1-5.Options. . 1-7.AssociatedEquipment 1-10.InstrumentIdentification 1-12.Cathode-RayTubeWarranty SectionPage IVPRINCIPLESOFOPERATION(Contd) 4-14.Calibrator4-2 4-18.High-VoltagePowerSupply4-3 4-24.TraceAlign4-3 MAINTENANCE. .5-1 5-1.Introduction5-1 5-3.PerformanceCheck5-1 5-6.Adjustments.5-1 5-11.AdjustmentofLow-Voltage PowerSupplies. .5-1 5-13.AdjustmentofHigh-VoltageSupply5-1 5-14.IntensityLimitAdjustment5-2 5-15.AstigmatismAdjustment5-2 5-16.GeometryAdjustment5-2 5-17.CalibratorAdjustment5-3 5-18.Troubleshooting. .5-3 5-19.Low-VoltagePowerSupplies5-3 5-26.High-VoltageSupply . . . .5-3 5-31.RepairandReplacement5-7 5-32.AirFilter. .5-7 5-34.RemovalofCathode-RayTube5-7 5-37.FanMotorRemoval5-7 5-39.RemovalofHigh-Voltage Assembly. . . . . . . . .5-8 5-41.ServicingEtchedCircuitBoards5-8 V 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-1 2-2 3-1 3-1 3-1 3-1 3-1 3-1 Page 1-1 1-1 1-1 1-1 1-2 1-2 INSTALLATION. 2-1.IncomingInspection 2-4.PowerRequirements. 2-6.230-VoltOperation. 2-8.ThreeConductorPowerCable 2-10.Cooling. . . 2-11.VentilationRequirements 2-13.AirFilter. 2-15.InstrumentMounting . . 2-16.ModularCabinet. 2-18.RackMounting 2-20.InstallationofAmberFilter. 2-22.RepackagingforShipment OPERATINGINSTRUCTIONS 3-1.Introduction. 3-3.ControlsandIndicators 3-4.FrontPanel. 3-9.RearPanel 3-12.Plug-InUnits. II ill IVPRINCIPLESOFOPERATION 4-1.General. . 4-6.Low-VoltagePowerSupply 4-1 4-1 4-1 6-1.Introduction. . 6-4.OrderingInformation 6-1 6-1 LISTOF ILLUSTRATIONS NumberTitlePageNumberTitlePage 1-1.Model140AOscilloscopewithModel5-1.ComponentLocations,TopView5-2 1400AAmplifierandModel1420A5-2.AdjustmentandComponentLocations TimeBasePlug-InUnits1-1BottomView .5-3 1-2.Cathode-RayTubeWarranty1-35-3.RemovalofHigh-VoltageDeckAssembly5-8 5-4.ComponentLocationsonHigh-Voltage Deck5-9 2-1.RackMountingProcedure2-05-5.ComponentLocationsonLow-Voltage Board5-10 3-1.Model140AControls.3-2 5-6.Low-VoltagePowerSupply(Schematic)5-11 5-7.ComponentLocationsonHigh-Voltage Board5-12 4-1.Model140ABlockDiagram4-15-8.High-VoltagePowerSupply(Schematic)5-13 4-2.RegulatedPowerSupplyBlockDiagram4-25-9.Plug-InConnectors5-14 4-3.High-VoltagePowerSupplyBlock Diagram4-36-1.CabinetParts,ExplodedView6-2 LISTOFTABLES NumberTitle 1-1.Specifications. 1-2.Plug-InsforModel140AOscilloscope 5-1.EquipmentRequiredforTestsand Adjustments. . . . . . . . . . . 5-2.Low-VoltageAdjustments. . . . . 5-3.CondensedAdjustmentProcedure Page 1-0 1-2 5-0 5-1 5-4 NumberTitle 5-4.TroubleshootingtheLow-Voltage Supply 5-5.TroubleshootingHigh-VoltageSupply, NoVoltage. 5-6.TroubleshootingHigh-VoltageSupply, IncorrectVoltage. 6-1.ReferenceDesignationIndex 6-2.ReplaceableParts. Page 5-5 5-7 5-8 6-3 6-10 01638-1iii SectionI Table1-1 Model 140A Table1-1.Specifications PLUG-INCOMPARTMENTS UpperCompartment,horizontalaxis: Acceptshorizontalplug-ins,Models1420to 1424or,ifdesired,amplifierplug-ins,Models 1400to1414.Plug-inoperatesdirectlyinto horizontaldeflectionplatesinModel 140A. LowerCompartment,verticalaxis: Acceptsplug-inamplifiers,Models1400to 1414or,ifdesired,horizontalplug-ins, Models1420to1424.Plug-inoperatesdirectly intoverticaldeflectionplatesinModel 140A. BEAM TINDER PressingBEAM TINDERcontrolbringstrace onscreen,regardlessofsettingofhorizontal orverticalPOSITIONcontrol. GENERAL PowerRequirements: 115or230volts10% AC,50to60cps, normallylessthan285watts(varieswith plug-inused).Willprovide140wattsof regulatedpowertoplug-ins. Combined: Dividingshieldcanberemoved;compartment acceptssinglelargeplug-inunits.Models 1415to1419. Dimensions: r-16t IOZ.6) i:r CATHODE-RAY TUBE Type: r$ffipost-accelerator,7.5-kvacceleratingpo- tential,aluminizedP31phosphorstandard; forotherphosphors,seeOPTIONS. TOP lsi 6i06.71 COL6) 140A SIDE NOTES DIMENSIONS IN INCHESAND(CENTIWlEIt$) o7NI:HTCCLUOINGFEET)ADOTOEIARACKHEIGHT w- Graticule: 10 x 10cmparallax-freeinternalgraticule, markedincentimetersquares;subdivisions of 2mmonmajorhorizontalandverticalaxes. IntensityModulation: Approximately+20voltpulsewillblanktrace ofnormalintensity;terminalsonrearpanel. CALIBRATOR Type: Line-frequencyrectangularsignal,approxi- mately0.5Ilsecrisetime. Voltage: Twooutputs:1voltand 10voltspeak-to-peak, 1%from15Cto35C,3%OCto55C. Weight: 37lbnetwithoutplug-ins Options: 02.CRTwithinternalgraticuleandP2 phosphorinstalled 07.CRTwithinternalgraticuleandP7 phosphorinstalled 11.CRTwithinternalgraticuleandP11 phosphorinstalled 1-001638-1 Model140ASectionI Paragraphs1-1to1-8 SECTIONI GENERALINFORMATION 1-5.OPTIONS. 1-6.TheModel 140Anormallyissuppliedwith a typeP31aluminizedphosphorCRT.Thefollowing options,however,areavailable: 1-7.ASSOCIATEDEQUIPMENT. 1-8.Some oftheplug-insavailablefortheModel 140AOscilloscopearelistedinTable1-2.The Model140Anormallyisusedwithanamplifier plug-ininthelowercompartmentandasweepplug- inintheuppercompartment.Theplug-ininthe lowercompartmentproducesverticaldeflection, andtheplug-inintheuppercompartmentproduces horizontaldeflection.Allrfj)Model1400-series plug-inscanbeusedwiththeModel140AOscilloscope. Plug-inmodelnumbersaregroupedaccordingto function: Models1400to1414 Models1420to1424 Plug-insnormallyused forverticaldeflection . . . . Doubleorfullsized .plug-ins Plug-insnormallyused forhorizontaldeflection P 2phosphor(generalpurpose) P7phosphor(longpersistence) P11phosphor(fastwritingrate) a. Option02. b. Option07. c. Option 11. Models1415to1419. 1-1.DESCRIPTION. 1-2.Therfj)Model 140A(Figure1-1)isageneral purposeplug-inoscilloscope.Thedeflectionampli- fiersarecontainedwithintheplug-inunits,which operatedirectlyintothecathode-raytube.Thus thecharacteristicsoftheoscilloscopearedependent upontheplug-insused.Presentlyavailableplug-ins makepossiblehigh-sensitivity,wide bandwidth,and single,dual,orfour-tracemeasurements,incom- binationwithnormal,single,ordelayedsweeps. Double-sizeplug-insalsoareavailableforspecial applicationssuchastimedomainreflectometry. 1-3.TheModel 140Aprovidespowerfortheplug- ins,aswellasline-frequencysquare-wavecali- bratingvoltagesof 10voltsand1voltpeak-to-peak, whichareavailableonthefrontpaneloftheModel 140A.TheprimarypowerswitchandallCRT controlsareontheModel140Afrontpanel,andthe terminalsandswitchforZ-axismodulationareon therearpanel. 1-4.TheModel 140Ausesaninternalgraticule CRTwhicheliminatesparallaxerrorinobserving thedisplay.TheCRTisequipped with anonglare safetyfaceplate. Figure1-1.Model 140AOscilloscopewith Model 1400AAmplifier andModel 1420ATimeBasePlug-InUnits 01638-11-1 SectionI Paragraphs1-9to1-13 Table1-2.Plug-InsforModel140AOscilloscope* Model 140A <ffJModelNameDescription 1400A 1401A 1402A 1403A 1415A 1420A 1421A DifferentialAmplifier DualTraceAmplifier DualTraceAmplifier ACDifferentialAmplifier TimeDomainReflectometer TimeBase TimeBaseandDelay Generator 100/lv/cmto20v/cmsensitivity;DCto400kcbandwidth Dualtraceanddifferentialdisplay;1mv/cmto 10v/cm sensitivity;DCto450kcbandwidth Dualtraceanddifferentialdisplay;5mv/cmto10v/cm sensitivity;DCto20Mc bandwidth 10/lv/cmto0.1v/cmsensitivity;0.1cpsto400kcband- width;variablebandwidthlimits Double-sizedplug-infortimedomainreflectometry.Includes pulsegenerator,verticalsampling,andtimebasefunctions. Systemrisetimelessthan0.1 nanosecond;reflectioncoef- ficientsof .001canbeobserved. Sweeprangesfrom0.5/lsec/cmto 5sec/cm;X10magnifier expandsfastestsweepto50nsec/cm.Singlesweepandex- ternalhorizontalinput functionsprovided.Internalorex- ternaltriggeringtogreaterthan10 Mc. BothNormalandDelayingsweepsfrom0.1/lsec/cmto1 sec/cm;X5magnifierexpandsfastestsweepto20nsec/cm; internalorexternaltriggeringtogreaterthan20Mc.Delay timecontinuouslyvariablefrom0.1/lsecto10sec.Delay functions:Normalsweep; Mixed sweep;Intensified: triggeredorarmed;Delayed:triggeredorarmed. *Checklatestliteratureforadditionalnewplug-ins. 1-9.Arrangementsofplug-inscanbechosentosuit anyspecialapplication.Amplifierandsweepplug- inscanbereversedsothattheamplifierproduces horizontaldeflectionand thesweeprunsvertically. (Whenusedthiswaythebeamwillnotbeblankedon thesweepretrace.)Anamplifierplug-incanbeused ineachcompartmenttomakeX-Ymeasurements. Doublesizedplug-ins,suchastheModel1415A,are insertedintotheoscilloscopeafterremovingthe dividershieldbetweenupperandlowercompartments. 1-10.INSTRUMENTIDENTIFICATION. 1-11.TheModel140Acarriesaneightdigitserial number(000-00000).Whentheserial-prefixednum- beronthetitlepageofthemanualisthesameas 1-2 thefirstthreedigitsoftheinstrumentserialnumber, themanualappliesdirectlytotheinstrument;when thesenumbersdiffer,changesheetssuppliedwith themanualwillspecifychangesrequiredtomake thismanualapplydirectlytotheinstrument. 1-12.CATHODE-RAYTUBEWARRANTY. 1-13.Thecathode-raytubesuppliedwiththeModel 140Aisguaranteedagainstelectricalfailureforone yearfromthedateofsalebytheHewlett-Packard Company.Thecathode-raytubewarrantyisillus- tratedinFigure1-2.Awarrantysheetforyouruse isincludedintheappendixofthismanual. 01638-1 Model140ASectionI Figure1-2 NAME: COMPANY:_ ADDRESS: CATHODElAYTUIEWAIIANTY FROM: CITWAIIANTYCLAIM DATE:_ The cathoderaytubesuppliedInyourHewleU-PackudOscllloscopeandreplacementcathode raytubespurchased(rom,areguaranteedagainstelectrical(allure(oroneyear(romthe dateo(salebytheHewlett-PackardCompany. Brokentubesortubeswith.burnedphosphorare not includedInthisguarantee. YourlocalHewlett-Packardrepresentativemaintainsastocko(replacementtubesand will be glad toprocessyourwarrantyclaim(oryou.Pleaseconsulthim. Whenevera tubeisreturned(orawarrantyclaim,thereversesideo(thissheetmustbe Cilled out in (ull andreturnedwith the tube. Follow shippinginstructionscare(ullytoInsuresalear- rival,sincenocreditcanbe allowed onbrokentubes. SHIPPING INSTRUCTIONS 1)Carefullywrapthe tubeIn1/4thickcottonbattingorothersoCt paddingmaterial. 2)Wrapthe above in heavykraltpaper. 3)PackIn arigidcontainerwhichtsatleast4 Incheslargerthan the tubeIneachdimension. 4)rroundthe tube withatleast(ourIncheso(packedexcelsloror similarshockabsorbingmaterial.Becertainthatthe packingis tightallaroundthe tube. 5)Tubesreturned(romoutsidethecontinentalUnitedStatesshould be packed In a wooden box. 6)ShipprepaldpreCerablybyAIRFREIGHTorRAILWAY EXPRESS. Wedo notrecommendparcelpostorairparcelpostshipment. Persontocontact(orfurtherInformation: NAME: TITLE: COMPANY:_ ADDRESS: ToprocessyourclaimquicklypleaseentertheInformationtndicatedbelow: 1)INSTRUMENTMODELSERIAL_ 2)TUBE TYPESERlAL_ 3) ORIGINAL TUBEREPLACEMENTTUBE_ 4) YOUR PURCHASE ORDERNO._ 5) DATE PURCHASED_ 6) PURCHASED FROM_ 7)COMPLAINT:(Pleasedescribenatureo(trouble)_ 8) OPERATING CONDITIONS:(Pleasedescribeconditionspriorto andattimeo(ailure_ SIGNATURE Figure1-2.Cathode-RayTubeWarranty HEWLETT-PACKARDCO.PAGEMILLROAD.PALOALTO.CALIF.U.S.A. 01638-11-3 SectionII Figure2-1 INSTRUCTIONS I.REMOVE TILT STAND, FEET, AND TRIMSTRIP. 2. ATTACHFILLERSTRIP AND FLANGES KEEPINGLARGE NOTCHONFLANGES TOINSTRUMENTBOTTOM. FILLERSTRIP Figure2-1.RackMountingProcedure 2-0 140A-B-2 Model140A 01638-1 Model140A SECTIONII INSTALLATION SectionIT Paragraphs2-1to2-21 2-1.INCOMINGINSPECTION. 2-2.MECHANICALINSPECTION.Uponreceipt of the Model140A,checkthecontentsofthecarton andinspecttheinstrumentforanyobviousdamage receivedinshipment.IfdamageiseVident, file a claimwiththecarrier.Refertothewarrantysheet attherearofthismanualforadditionalinformation. Keepthepackingmaterialuntilanoperationalcheck hasbeencompleted. 2-3.OPERATIONAL CHECK.RefertoSectionV (Paragraph5-3)foraperformancechecktoverify thatoperationiswithinpublishedspecifications.This checkrequires.thateitherasinglelargeplug-inor twosmallplug-insbeinstalled. 2-4.POWER REQUIREMENTS. 2-5.TheModel140Arequiresapowersourceof 115or230volts10%,singlephase,50to60cps, whichcandeliverapproximately300watts. CAUTION Besuretosetthe115-230voltswitchfor thelinevoltagetobeused.Thepower suppliesmaybedamagedifthisswitchis settothewrongposition. 2-6.230-VOLT OPERATION. 2-7.Iftheinstrumentistobeoperatedfroma 230- voltsource,settheswitchontherearoftheinstru- mentto230.Thelinefuse,locatedbehindtherear panel,isaccessiblebyremovingthebottomcover, andshouldbereplacedwith a2-ampslow-blowfuse (supplied).(A4-ampslow-blowfuseisusedwith 115-voltoperation.) 2-8.THREE CONDUCTOR POWER CABLE. 2-9.Toprotectoperatingpersonnel,theNational ElectricalMa.facturersAssociation(NEMA)re- commendsthattheinstrumentpanelandcabinetbe grounded.Thisinstrumentisequipped with athree- conductorpowercablewhich, when pluggedintoan appropriatereceptacle,groundstheinstrument.The offsetpinonthepowercablethree-prongconnector isthegroundpin.Topreservetheprotectionfeature whenoperatingtheinstrumentfromatwo-contact outlet,useathree-prongtotwo-prongadapterand connectthegreenpigtailtoground. 2-10.COOLING. 2-11. VENTILATION REQUIREMENTS. 2-12.TheModel140Ausesaforced-aircooling systemtomaintainreasonableoperatingtemperatures withinthecabinet.Theairintakeandfilterare locatedon therearoftheinstrument.Wheninstalling 01638-1 theModel140A,choosealocationthatprovidesat leastthreeinchesofclearancearoundrearandsides ofinstrument. 2-13. AIRFILTER. 2-14.Thefiltershouldbecleanedperiodicallyto ensurepropercooling.Aftercleaning,theair filter,locatedontherearoftheinstrument,should becoatedwith afilteradhesivesuchasFilterCoat No. 3fromResearchProductsCo.RefertoPara- graph5-32forcleaningprocedures. 2-15.INSTRUMENTMOUNTING. 2-16. MODULAR CABINET. 2-17.TheModel 140Aisshippedfromthefactory asabenchinstrumentwiththetiltstand,feet,and plastictriminplace.Thetop andbottomcabinet coverscanberemoved,givingcompleteaccessibility toallcomponentsandadjustments.Sufficientspace shouldbeallowedaroundthecabinetforadequate circulationair. 2-18. RACK MOUNTING. 2-19.Preparethecabinetforrackmountingas illustratedinFigure2-1.Allnecessaryhardware isintheshippingcartonwiththeinstrument.After preparation,lifttheinstrumentintoplace,and securemountingflangestorackwithappropriate screws.Allowadequateventilationfortheinstru- mentintherack. 2-20.INSTALLATIONOF AMBER FILTER. 2-21. Anamberfilter(r:ffffiStock No. 120A-83A)is suppliedwithoscilloscopeswhich have a CRT with typeP7phosphor.Thisfilterimprovesthevisibility ofdisplayssuchassingle-shotorverylowfrequency phenomena.Thefilterimprovesthelongpersistency characteristicsofthetr