HP-526B-Manual-SN-024 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 m to N III HEWLETT-PACKARDCOMPANY 526. TIMEINTERVALUNIT UI I) Cll m RadioFans.CN 收音机爱 好者资料库 OPERATINGANDSERVICINGMANUAL MODEL5268 TIMEINTERVALUNIT SERIALSPREFIXED:024- X8 + TOOPERATETHISUNIT SETMAINFUNCTION SELECTORTOPERIOD TRIGGER TRIGGERLEVEL-VOLTS SLOPE ;. + X8 SEP. I TIllE INTERVAL rART ( STOP INT;AL INPOT ,POT I COM. / H(Wl1T,AlJ1JI1lO _.- r / PERIOD l 00038-2 CopyrightHEWLETT-PACKARDCOMPANY1958 1501 PAGE MILL ROAD,PALOALTO, CALIFORNIA,U.S.A. Printed3/61 RadioFans.CN 收音机爱 好者资料库 ) Model 526B SPECIFICATIONS (PLUGGED INTOf!524B,C,orDELECTRONICCOUNTER) ) ) RANGE: ACCURACY: REGISTRATION: rnpUTVOLTAGE: rnpUTIMPEDANCE: STARTSTOP: TRIGGERSLOPE: TRIGGERAMPLITUDE: STANDARD FREQUENCY COUNTED: READSrn: ACCESSORIES FURNISHED: ACCESSORIES AVAILABLE WEIGHT: 00038-2 IlJ.secto107seconds. lperiodofstandardfrequency counted, timebaseaccuracy. On524Counter 1voltpeakminimum,direct-coupledinput. Approximately1megohm,40 pfshunt. Independentorcommonchannels. Positiveornegativeonstartand/orstopchannels. Bothchannelscontinuouslyadjustablefrom-192 to +192 volts. 10cps;1kc,100 kc;10mcfromf!524;externallyapplied frequency. Seconds,milliseconds,ormicroseconds;decimalpointauto- maticallypositioned. f!AC-16KCableAssembly,42RG-58/Ucableterminated ononeendwithUG-88/UBNCConnector. 525A-45ATransitCase,withcarryinghandle. Net5Ibs.,Shipping8Ibs. iii SECTIONI CONTENTS GENERALDESCRIPTIONPage 1 - 1 1 - 2 Introduction DamageinTransit 1-1 I - 1 SECTIONIIOPERATINGINSTRUCTIONS 2 - 1 2 - 2 Controls SettingtheTriggerLevel-VoltsControls II - 1 II - 1 SECTIONIIICIRCUIT DESCRIPTION 3 - 1 3 - 2 General CircuitDetail 1lI- 1 1lI- 1 SECTIONIVMAINTENANCE 4 - 1 4 - 2 General AdjustingtheTriggerLevel-VoltsControls IV- 1 IV- 1 iv SECTION VREPLACEABLEPARTS 5 - 1Introduction. 5 -2TableofReplaceableParts 5 - 3OrderingInformation. V - 1 V - 1 V - 1 00038-2 ) 1-1INTRODUCTION TheModel526BTimeIntervalUnitconvertsan 524B,C,orDElectronicCounterinto anaccurate timemeasuringinstrument.Thisinstrumentmea- surespulsewidth,pulsedelay,ortimebetween nearlyanytwoelectricalevents,with aresolution of0.1microsecond.Separateinputchannelsare Sect. IPage1 SECTIONI GENERALDESCRIPTION providedsostartandstopsignalsmaybefrom unrelatedsources. 1-2DAMAGEINTRANSIT Thoroughlyinspectthisinstrumentuponreceipt. Hthereisanydamage,seeClaimforDamagein Shipmentparagraphattherearofthismanual. 2-1CONTROLS The526Bhastwo independentchannelswhichdeter- minelimitsof atimeinterval.Eachhasitsown controls.TheTRIGGERLEVEL-VOLTScontrols determinethevoltagelevelasignalmustcrossto startorstopameasurement.TRIGGERSLOPE controlsdeterminetheslopeasignalmusthave, asitcrossesthevoltagelevelsetbyTRIGGER LEVEL-VOLTScontrols,tostartorstopamea- surement.Ifstartandstopsignalscomefromthe samesource,youmayconnectSTART INPUTand STOP INPUTconnectorstogetherwith the COM-SEP switchandapplythesignaltoeither.However, youmuststilladjusteachchannelseparately. 2-2SETTINGTHETRIGGERLEVEL- VOLTSCONTROLS TheTRIGGER LEVEL-VOLTScontrolsareapprox- imatelycalibrated,butinsomeapplicationsyou willhavetotakespecialprecautionsinorderto obtain thedesiredinterval.Ifyou use asharppulse likethatshowninFigure2-1,therewillbelittle differencewhethermeasurementbeginsatpointA B- A- Sect.nPageI SECTIONII OPERATINGINSTRUCTIONS orB.However, tomeasureintervalxofFigure 2-2,youmustbemorecareful.SetTRIGGER LEVEL-VOLTScontrolsnearzeroasapreliminary adjustment.AdjusttheSTARTandthentheSTOP controls.Watchfordefinitechangesinmeasured time.Thusyouknowthatstartandstopvoltage levelsareabovethestepandthattheindicatedtime intervalisactuallyx. Itisdesirableto examine bothstartandstopsignals on an oscilloscope beforeattemptingameasuremenl Inthisway you candeterminewhetherspurioussig- nalsexist,and you will know howcarefullyyoumust setthe TRIGGER LEVEL-VOLTScontrols. TheinputcircuitsintheTimeIntervalUnitare directcoupled.Youcansometimessimplifythe settingoftheTRIGGERLEVEL-VOLTScontrols byeliminatinganydc component of thestartand/or stopsignalswithblockingcapacitors.However, toavoiddrawinggridcurrentandresultingdcshift in the inputstages,besurethatpeakvoltages applied totheinputcircuitsdonotexceedtentimesthe multiplyingfactorof thecoarseTRIGGERLEVEL- VOLTScontrols.Eitheruseahighermultiplying factororexternallyattenuatethesignal. RO L I y-I RO Figure2-1.SimpleWaveformFigure2-2.ComplexWaveform Sect.ITPage2 TIME INTERVALMEASUREMENT o0 ooooo I.n . 00 J$I 0<. (0) IUUllltetin. 7.;:.:=: 5r-t-t- r-!no I 1.Plugin 526B.Besurecounterpowerswitch isoff whenever you changeplug-inunits. 2.Set TIME INTERVAL-PERIOD switch to TIME INTERVAL. 8.SetStartchannelTRIGGER SLOPEswitchto positiveifyou wantmeasurementtostarton positive-goingpartof signal.Set to negative ifyou wantstartpoint on negativeslope. 3.Set FUNCTION SELECTOR switch to PERIOD. 4.Connectstartandstopsignalsto START IN- PUTandSTOP INPUTconnectors. 9.AdjustStartTRIGGER LEVELcontrolstoset measurementstartpointatdesiredvoltage level. 5.SetSEP-COMswitchtoSEP. Note:Ifstartandstopsignalsarefromsame source,setSEP-COM switch toCOMand con- nect signal toeitherinput connector. 6.SetTIME UNITswitchtodesiredtimeunit (usuallytoobtainhighestpossiblecount.) 10.SetStopchannelTRIGGER SLOPEswitchto positiveifyouwantmeasurementtostopon positive-goingpartofsignal.Set to negative ifyou want stop point on negative slope. 11.Adjust Stop TRIGGER LEVELcontrolstoset measurementstoppointsatdesiredvoltage level. 7.SetDISPLAY TIMEcontrolfordesireddis- playtime. 12.Readtimeintervalin unitsselectedby TIME UNIT switch. Figure2-3 Sect.illPageI SECTIONIII CIRCUITDESCRIPTION 3-1GENERAL The526Bsendstwonegativepulses,startpulseand stoppulse,to a oo.siccounterforeachtimeinterval measurement.Thestartpulseopensasignalgate within thecounter,whichthencountsone ofitsin- ternalfrequencies until thestoppulseclosesthesig- nalgate. 3-2CIRCUITDETAIL Thepulsesaregeneratedin twoidenticalcircuits. SeeFigure3-1.AsignalappliedtotheSTART IN- PUTconnectorisattenuatedaccordingtothesetting ofthecoarseTRIGGERLEVEL-VOLTScontrol. ThefineTRIGGERLEVEL-VOLTScontroldeter- minesthevoltagelevelsrequiredatthe input of the stabilizedamplifiertoactuatetheSchmitttrigger.I Thecircuitsof the 526Baredc-coupled;thusslowly varyingvoltagesaswellasrapidlyvaryingvoltages willactuatetheSchmitttrigger.Theoutputofthe Schmitttriggerisastepfunction,negativefora negative-goingvoltageattheSTARTINPUTcon- nector,positiveforapositive-goingvoltageatthe STARTINPUTconnector.LlOlshapesthestep functionsintopulsesatoneterminalandintoin- vertedpulsesattheotherterminal.The TRIGGER SLOPEswitchselectstheterminalofLIOIwhich deliversanegativepulseforthedesiredslopeof theinput.Thestopcircuitoperationisexactly thesame. Forameasurementbetweentwopointson asingle waveform,theCOM-SEPswitchcanconnectthe two inputconnectorstogether.Thustheonewave- form,connectedtoeitherconnector,willdrive bothcircuits. +210Vm .,START-PULSE ,TOCOUNTER , I JI I 6 L.,;=.;.;.:. iY._STOP-PULSE ITOCOUNTER 1 I QI I 6 LIOI +210V t I 0- J TRIGGER LEVEL-VOLTS TRIGGERUNIT r-, ,I II ISTABILIZEDSCHMITTI t-+-tAMPLIFIERTRIGGER1-.1- 1_-l I II LJ TRIGGERUNI T r-, II 1I ISTABILIZEDSCHMITTI t-1,-tAMPLIFIERTRIGGERI-.,r- ,1 II LJ -195V -0 , I L-D0- J r-, ATTENUATOR ATTENUATOR START INPUT TRIGGER LEVEL-VOLTS t -195V IO-l-IZI Figure3-1.526BBlockDiagram 1Millmanand Taub:PulseandDigitalCircuits, McGraw-HillBookCompany,Inc.,NewYork, 1956,Sec.5-10. Change,etal:Waveforms, Radiation Laboratory Series,Volume19,McGraw-HillBook Company, Inc.,New York, 1949,Sec.5-4. Sect. IVPage0 GREEN RED PURPLE PURPLE PURPLE PURPLE II BLUE II . 910 1213141516161514131211109 1234567BB7654321 R G-62/U + I I I- f I II ORANGE PURPLE BROWN GREY PINK WHITE CONNECTORCONNECTOR AMPHENOL _13INCHES AMPHENOL -26-4100-16Pa26-4200-16S CX-292S/USM-26 YELLOW COEC AMPHENOL -26-4200-85 CONNECOR AMPHENOL -26-4100-BP BLUE PIN K PURPLE . 13INCHES -I 567BB765 I234432I - + GREEN RG-62/U - -TNNTOR CX-2927/USM-26 Figure4-1.FabricationDataforTestCables L 0 -L -232 ) 4-1GENERAL Thestartandstopchannelsofthe526Barein- dependentunitsand atroubleinonewillgenerally notaffecttheother.Youcaninterchangetrigger unitstoisolatetroublein afaultychanneltoits triggerunitorothercircuitry. Twocablesareavailablewhichenableyou totest the 526B whenitisremovedfromthe counter.Fab- ricationdataforthecablesisgiven inFigure4-1. YoucanorderthecablesfromtheHewlett-Packard Companyunderstocknumbers524B-16Q(a-con- nector)and524B-16P(16-connector). 4-2ADJUSTINGTHETRIGGERLEVEL- VOLTSCONTROLS CalibrateTRIGGER LEVEL-VOLTScontrolswhen- everyoureplaceatubeorcomponentin atrigger unit.Proceedasfollows: a.Plug526B intocounter.Besurecounterpower switchisoffwheneveryouinstallorremove plug-inunits.Allowaboutfiveminuteswarmup. b.SetFUNCTIONSELECTORtoPERIOD. c.SetTIME UNITswitchto10MC. d.SetTIME INTERVAL-PERIODswitchon 526B to TIME INTERVAL. e.SetSEP.COM.switchto COM. Sect.IVPage1 SECTIONIV MAINTENANCE .f.SetbothTRIGGERSLOPEswitchestosame polarity. g.SetcoarseTRIGGERLEVEL-VOLTScontrols to Xl. h.Set fine TRIGGER LEVEL-VOLTScontrolstoO. i.Connecta 1 kcsinewave,about1 Vrms,to STARTINPUTorSTOPINPUTconnector. j.RotatestartchannelfineTRIGGERLEVEL- VOLTScontroltoward+6.Notereadingat whichmeasurementsstop. k.Returncontroltozeroandrotateittoward-6. Notereadingatwhichmeasurementsstop. 1.AdjustRll9,locatedjusttotherightofstart TRIGGER LEVEL-VOLTScontrols,untilread- ingsnoted instepsjandkarelocatedsymetrically aboutzero.ReturnTRIGGERLEVEL-VOLTScon- troltozero. m.RotatestopchannelfineTRIGGERLEVEL- VOLTScontroltoward+6.Notereadingat whichstopchannelnolongerendsthecount. n.Returncontroltozeroandrotateittoward-6. Notereadingatwhichstopchannelnolonger endscount. o.AdjustRl07,locatedjusttorightofstopTRIG- GERLEVEL-VOLTScontrols,untilreadings notedinstepsmandnarelocatedsymetrically aboutzero.- Sect.IVPage 2 0: W -f- 0:_ f-Z I 0. o f- (f) 0: W a:f- f- IZ f- 0: f- (f) - - :s: :s: LO :.c LO :.c t.D 010N t.D 10 t.Dt.DO:;!; 0LO o o o w CO I N 8- Cl . tTl N 0) ttl ,.- - -STABILIZED ., AMPLIFIER -.y,.-SCHMITTTRIGGER-. . V603 5654/6A.5W R615 90. R 613 3300 V602 5654/6A.5W C603 47 R610 200. R612 47. R609 8200 R608 8200 R611 4700 -, L603: IV601B 25963 R607 1000 C601 100 R605 47. C602 390 L.J r-L:602i I19iHI R603r:l 180.,I 1I I68uI I IV601A 25963 R602 4700 r-,I II ,L601I 12511H10., I, II LJ R604 82. -=- OUTPUT -95VDCI/(i) INPUT V603 +20VDCREO NOTES ALLRESISTORVALUES INOHMS.CAPACITY VALUESINMICRO - MICROFARAOS . 1000M MEGOHMS.GROUNO COPYRIGHT1938IYHEWLETT.PACKARD COMPANY ThisdrawingI,Intended fortheoperation and maint.nanceofHewl.ttockardequip- mentandI,nottob.uI.doth.rwl.or r.producedwithout writtenconlenofthe HewlettPackard Company. 521-511-5CHM.TIII1I.UNIT-r-ozu CI.l Cl n r+ W en CD n ,. 1-CCO.OrI =.,.l:4;lTi-R01:OKtg:gRGIrVl;0I ,II,BtoO,80OKP12.J8G(3-.J 1.:.1012-=-Jl,) .(8_._TRIGGER(26, ,0s101L101-2tolS05TRIGGER $102l-wGu(lfl.lvhVOl.1SJ:eGJL.:SLOP51041!LJ8 4 (IourPUT-.7C)- 0503,ie(!JQRb CI08210062 IRGGERLVELVOlTj,I.011JrI1. r - -7rI,.v-.IIp,ooIifJ,- (i)/:.-I/-:Ll01290OlI,.-2 -1-QlI:/C09CliOI:eElIPI02CM.TUWITH J02=.jCII.,.E8Q0COUNHR :;lJ/TI?+i-IIIT5106; ,/1 Clt4IIlltO) r:-:10/L -_J19 x 2,CYlL:-tJ.,.purTRIGGER 0;_:.NOTES_ -=cr,UNITl.AllRSISTaNCtvalUESINMSAND n5268-588INDuctaNCEvalUSINMICRDNRYS. /)()(K1000.GROUND CIl3tllZClllIIflZ.allwarER;*ITCHESVI*(OROMSI 47:NO.8CIRCUITSECONDRDMSHa- :;:;-WAft.ARtD. =R,.YnrI1lMBOLSONTHISDIAGRAM OK2!lOKCOYlI RIZ*aITRIGGERlEVELITI 120VOLTS01 L.J o o o w (Xl 1 to.:! Figure4-4.TimeIntervalUnit Model 526B s= o e- CD - t11 to.:! 0) tJ:l Model 526B 5-1INTRODUCTION Thissectioncontainsinformationfororderingre- placementpartsforthe 526BTimeIntervalUnit. 5-2TABLEOF REPLACEABLE PARTS Table5-1listsreplaceablepartsinalpha-numerical orderoftheirreferencedesignators.Attheend of thetablearelistedmiscellaneousitemssuchasknobs whichhavenoassignedreferencedesignators. Detailedinformationon apartusedmorethan once intheinstrumentislistedoppositethefirstreference designatorapplyingtotheparttoappearinthetable. Otherreferencedesignatorsapplying tothesame partreferencetheinitialdesignator.Thedetailed informationincludesthefollowing: a.Fulldescriptionofthepart. b.Manufacturerof thepartin afive-digitcode-see listofmanufacturersin appendix. c.Totalquantityusedintheinstrument(TQ column). d.Recommendedsparequantityforcompletemainten- anceduringoneyearofisolatedservice(RScol.). Sect.VPageI SECTIONV REPLACEABLEPARTS 5-3ORDERINGINFORMATION Toorderareplacementpart,addressorderorin- quiryeithertoyourauthorizedHewlett-Packardsales officeorto CUSTOMER SERVICE Hewlett-PackardCompany 395PageMillRoad PaloAlto,California or,inwesternEurope,to Hewlett-PackardS. A. Rue du VieuxBillardNo.I Geneva,Switzerland Specifythefollowinginformationon apart: a.Model andserialnumberoftheinstrument.Be suretoincludethethree-digitserialprefix. b.!Jf;stocknumber. c.Circuitreferencedesignator. d.Description. Toorderapartnotlistedintable5-1.give acomplete descriptionofthepartincludingitsfunction andlo- cationinthecircuit. Table5-1.ReplaceableParts(Sheet 1 of5) Ckt Ref.DescriptionMfr*Stock No.TQ*RS* MODEL 526B TIME INTERVALUNIT C1thruNotassigned C100 C101Capacitor:fixed,mica,764330140-000221 10 pf10%,500 vdcw C102Capacitor:fixed,mica,764330140-000441 15 pf10%,500 vdcw C103Capacitor:fixed,mica,008530140-000521 27 pf10%,500 vdcw C104SameasC102 C105Capacitor:fixed,mica,764330140-003231 47 pf10%,500 vdcw * Seeintroductiontothissection 00038-2 Sect.VPage2 Table5-1.ReplaceableParts(Sheet 2 of5) Model 526B CktRef.Description MfrStock No.TQRS C106Capacitor:fixed,mica,764330140-0006 21 82 pf 10%, 500 vdcw C107Capacitor:fixed,mica,764330140-003411 22pf5%,300 vdcw C108Capacitor:fixed,ceramic,011210150-001211 .01IJ.f20%, 1000 vdcw C109SameasC102 CllOSameasC103 Cll1SameasC106 C1l2SameasC105 C1l3SameasC102 C114SameasC101 C1l5,116Capacitor:fixed,mica,008530140-002121 39 pf 10%, 500 vdcw C1l7thruNotassigned C600 C601Capacitor:fixed,mica,008530140-005411 100pf10%, 500 vdcw C602Capacitor:fixed,mica,764330140-003011 390pf10%, 500 vdcw C603SameasC105 C604Capacitor:fixed,ceramic,960950150-000911 10pfO.5pf,500 vdcw J1thruNotassigned J100 J101,102Connector,female:BNC917371250-004721 LlthruNotassigned L100 L10l,102Transformer,discriminator284809130-000521 L103Coil:19IJ.h28480524B-60B21 L104thruNotassigned L600 L601Inductor:25IJ.h,wound on 10Kresistor28480524B-60A11 L602SameasL103 Seeintroductiontothissection 00038-2 Model526B Table5-1.ReplaceableParts(Sheet 3 of5) Sect. VPage3 Ckt Ref.Description Mfrf;JStocko.TQRS L603Inductor:16 Jlh, wound on 1 megohm28480 524B-60M11 resistor L604Inductor:10. 5Jlh,wound on 1megohm 28480524B-6OG11 resistor PlthruN
