HP-415A-Manual-sn-2852 电路图.pdf

《HP-415A-Manual-sn-2852 电路图.pdf》由会员分享，可在线阅读，更多相关《HP-415A-Manual-sn-2852 电路图.pdf（24页珍藏版）》请在收音机爱好者资料库上搜索。

1、 HP Archive This vintage Hewlett Packard document was preserved and distributed by www. Please visit us on the web ! On-line curator: Glenn Robb This document is for FREE distribution only! RadioFans.CN 收音机爱 好者资料库 INSTRUCTIONANDOPERATINGMANUAL FOR MODEL4l5A STANDINGWAVEINDICATOR Serial2852andabove C

2、opyright1954byHewlettPackardCompany. Theinformationcontainedinthisbooklet isintendedfortheoperationandmain- tenanceofHewlett-Packardequipment andisnottobeusedotherwiseorrepro- ducedwithoutthewrittenconsentofthe HewlettPackardCompany. HewlettrPackardCompany 295PageMillRoad PaloAlto,California , Radio

3、Fans.CN 收音机爱 好者资料库 GeneralDescription TheModel415AStandingWaveIndicatorisdesignedforusewith Hewlett-Packardslottedlinesanddetectormounts. TheStandingWaveIndicatorconsistsofanamplifierandrectifiertype voltmeter.Theamplifierisfrequencyselectiveandhasanextremely lownoiselevel.Theoutputoftheamplifierism

4、easuredwithasquare- lawcalibratedvoltmeter.A60dbattenuatoradjustablein10dbsteps providesacalibratedrangeof70db.Againcontrolisprovidedfor adjustingthemetertoaconvenientlevel. Theinstrumentmaybeoperatedwitheitheracrystalorbolometer detector.Abiassupplywithintheinstrumentmakesitpossibletouse eitherahig

5、horlowcurrentbolometer. RadioFans.CN 收音机爱 好者资料库 Specincabons Frequency- 1,000cycles/sec.-!20/0 Sensitivity- .3microvoltsinputproducesfullscalemeterdeflection. NOiseLevel- Equivalentnoisereferredtoinput1sthan.04microvolts. AmplifierQ_. 205 Calibration Forusewithsquarelawdetector.MeterindicatesVSWRand

6、DB. Range 70dbinputattenuatorprovides60dbattenuationin10dbsteps. Accuracy.1dbper10dbstep. GainControl- b.200ohmsforcrystalrectifier. c.75.000ohmsforcrystalrectlfierforuseasanullindicator. Termination UG88/ UConnector oneend,otherend open RG55/U44 11 Length 1 Quantity Adjustsmetertoconvenientlevel.Ra

7、ngeapproximately30db. a.200ohmsbiasprovidedfor8.75rna.bolometeror1/100ampere instrumentfuse;or4.5rna.lowcurrentbolometer. Input- InputCable AccessoriesFurnished- MeterCable126TwoCord Rlpcord Telephoneplug oneend.otherend open -1- PowerSupplyRating Voltage Frequency Wattage OverallDimensIons CabinetM

8、odel RackModel WeIght= CabmetModel RackModel 115/230voltstlO% 50/60cycles /sec. 60watts 121/2wIdex 93/4hIghx10-1/4deep 19wIdex 83/4hIghx10-1/4deep Panelsize-19widex 83/4hIgh Depthbehmdpanel9-1/4 l7lbs.includIngaccessorIes 20lbs.includIngacceSSOries I OperatIngInstructIon Inspection Thisinstrumenthas

9、beenthoroughlytestedandmspectedbeforebeing shIppedfromthefactory.Afterthemstrumentisunpackeditshouldbe carefullycheckedfordamagereceIved.Intransit.IfanyshIppingdamage isfound,followtheprocedureouthnedInthelIClaimforDamagein ShipmentsectiononthelastpageofthISinstructIOnbook. ControlandTerminals CRYST

10、ALProvides200ohms.mputimpedanceforusewtha crystalrectifier. CRYSTALBOLOMETER75,000J.-ThISswItchisprovidedso thattheinputcircuitconstantsmaybereadIlychangedtomatchthecharac- teristicsofthecrystalorbolometerconnectedtotheinputoftheinstru ment.Theinputcharacterisobtainedateachswitchpositionasdescribed

11、below: BOLOMETERProvides200ohmsinputImpedanceforusewItha bolometeror1/100ampereinstrumentfuse.Also providesbiasforthebolometerorinstrumentfuse. . . - . 0 - U1 N 00 U1 N il :s p.: il Oi o CURRENTThisjackISprovidedsothatamilliammetermaybe insertedinthebiascircuittomeasurethecurrentflOWIngthroughthe bo

12、lometerorinstrumentfuse.Atwoconductorcablewithatelephone plugononeendissuppliedwiththeinstrumentforconnectmgamilliammeter totheInstrument. 2 INPUTThIsBNCtypeconnectoristheinputtermmaloftheinstru ment.AninputcableconsistingofaUG88/Uconnectorononeendofa RG55/Ucableisprovidedforconnectingthemstrumentto

13、thecrystalor bolometer. SWR-DBThiscontrolisathreesctlOnvoltagedividerwithone divIderinthegndCIrCUItofeachoftheflrstthreeamplIfIertubes.It attenuatesthesignalin10dbstepstoamaXImumattenuationof60db. HIGHLOWThIstogglesWItch,locatedonthetopofthechassis deck,isprovidedsothatabiascurrentofeIther8.75rna.or

14、4.5rna. maybesupphedtothebolometerInuse. GAIN-Thisvariableresistorcontrolsthesignalvoltageappliedto thefourthampliflerstageandtherefore,theoutputoftheamplifier. FUSEThefuseholderIlocatedonthecontrolpanel.containsa 1 amperecartridgefuse.Toreplacethefuse,unscrewthefuseholdercap andremovetheblownfuse.I

15、nsertanewfuseofthesametypeandre placethefuseholdercap.For230voltoperationt.hisfuseshouldhave a1/2ampererating.ReplacementfusesshouldbeoftheSlo-Blo ll type asspecifledIIItheTableofReplaceablePartsinthisinstructionmanual. ONThissWItchcontrolsthepowersupphedtothelllstrumentfrom thepowerline.Theredindic

16、atorlamp,onthecontrolpanel,hghts whenthepowerswitchisturnedon. Operation Note:ThisinstrumentisshIppedfromthefactorywIththepower transformerprimanesconnectedfor115voltoperation.Ifoperation froma23qvoltpowersourceisdesIredconnectthetransformer pnmanesasshownontheschematicdIagramInthisinstruchonmanual.

17、 TheprocedureforoperatingtheInstrumentisasfollows: ConnecttheInstrumenttothepowE.rlIneandtheInputcabletothe INPUTtermInal.Allowtheinstrumenttoreachoperatingtemperature. CrystalDetector 1.ConnectthecrystalrectlfiertothInput,cable.Setthe CRYSTAL-75J000J.-,witchtotheCRYSTALpOSItion. 2.SettheSWR-DBandGA

18、INcontrolsothatareadablemeter indicationisobtained.VarytheITIodulationfrequencyto obtainapeakmeterindicatlOn.Thlsinsuresthatthemodu lationfrequencyistunedtothefrequencyofthefilterinthe Model415A. 3.AdjusttheGAINandattenuatorcontrolsforthedesued meterindicationandperformthemeasurementsasde scribedInt

19、heinstructionbookoftheslottedImeor otherequipmentInuse. 3- Bolometer 1.Connectthebolometertotheouterendoftheinputcable. Connectamllhammetertothemetercablesupphed.with theJnstrumentandmsertthl. ttl.phoneplugintheCURRENT jack.SettheHIGHLOWsVvltchforthrangec.urrent requIredbythebolometr.AvarIableresist

20、anc.L:maybe connectedinserieswIththmJl1:amnwterIfitisnecessary tocontrolthecurrentthroughthebolometer. 2.SettheCRYSTAL.75,000sWltchtobolometerandre peatsteps2and3ofthecrystaloperatlOnprocedure. NullDetector 1.ConnecttheINPUTcabletothebridgeCHCUlt.Setthe CRYSTAL75,OOO.A.switchtothe75.000ohmsposition.

21、 2.AdjustthefrequencysupphedtthebndgeLlrcuitsothat amaximumdeflectlOnISproduedonthModJ15A meter.AdjusttheGAINandttenuatorcontroltoobtam areadableindication. 3.AsthebridgeapproachsbalancethegainoftheMode1 415AshouldbemcreasdtoobtaInanaccuratenullpomt. Itshouldberememberedwhenm,lhnmeatiurementswiththe

22、Model 415AthattheinstrumentIScalIbratedforseW1thasquarelawdetector. IfthevoltageappliedtothemstrumenthasahnearrelatlOnhiporis derivedfromalineardetector,thecahbratlOnoftheModel415AWIll beincorrect. ForexampleiftheInstrumentisfedbyasquarlawdetectorand thisdetectorissupphedfromasignalgCnerator.thedbsa

23、leonthe Model415Aandonthesignalgeneratorw111checkasthevoltageisill creasedordecreased.However,IftheMode1415A15supplieddirectly fromthesignalgeneratorthreadingoftheMode1415Awillchange 5dbwhena10dbchangismadeIntheoutputoftheSIgnalgenerator. C1rcuitD(s_IlOnconnectsanexternalbolometerbetween thechaSSISa

24、ndoneendoftheinputtransformerprimaryWInding.The otherendoftheWInding18connel.tedtotheblasvoltageobtaInedfrom thevoltageacrossthecurrentregulatortubeV7Afdterandvoltage -4 . . -. . 0- -. Jl * c .J: (I! rt: r- (I! Vacuumtubevoltmetersuitableformeasurmgosclllatoroutput voltage.Hewlett-PackardModeIs-lOOA

25、.-lOOB:400C.400D,410A,or 410B. 1.TurnthepowersWItchtoON.SettheCRYSTALBOLOMETER- 75000-.switchtotheCRYSTALpositlon.SettheSWR-DB switchtothe0position.TurntheGAINcontroltonearlymaxi mum. 2.ConnecttheoscillatortotheINPUTtermmalofthemstrument. AdjusttheoSClllatortohlterfrequencyand.Ivoltoutput. Re-adjust

26、theoscillatorfrequencyformaXImumdeflectIonof theModel41.5Ameter.SettheGAINcontrolsothatthemeter pointercoincideswIththe,estdbmark. 3.DisconnectoscIllatorfromtheModel-l15A.Shortcircuitthe INPUTterminalsoftheStandmgWaveIndicator.Setthe SWRDBswitchtothe60dbposltlOn.Adjustthevanablere sistorR39formInImu

27、mmeterIndicatlOn. AdjustmentofAudioFIlterQ ThefollOWIngprocedureforadJustmgtheauc0fitertothedesired QmayalsobeusedwhenadIfferentfrequencyflersinstalledinthe instrument. AuxiliaryTestEquipmentRequired: Hewlett-PackardModel2001osc111ator. 1.TurnthepowersWltLhto0.SttheCRYSTALBOLOMETER- 75.000-.sWItchto

28、theCRYSTALpositIon.SettheSWR-DB switchtothe0posItlon.TurntheGAINcontroltomaximum. 2.ConnecttheoSClllatortothe1PUTtermmalofthemstrument. AdjusttheoSClllatortothehltrfrequencyandsettheoutput sothattheModel4l5AmeterindIcatesexactlyadb.Note theresonantfrequencyoftheliter. 3.IncreasetheoSClllatorfrequenc

29、yabout100cyclesandthenreo ducethefrequencyuntllthemeterlndicatesL 5db.Notetlie frequencyatthispoint.ContinuetolowerthefrequencyuntIl themeteragaInIndicates1.5db.otethfrequencyatthis pOInt.Subtractthefrequencyobtamedattheseand1.5dbpoint fromthefrequencyatthefust1.5dbpOInt,ThIsIStheband width.ThenQise

30、qualtotheresonantfrequencyofthefilter dividedbythebandWIdth. Example: First1.5dbpointirequency Second1.5dbpointfrequency Resonantfreqencyoffilter 7- =1025cycles/sec. i)HOcyclcs/-:;cc, -:If)OOcyles/sec. 1025 980 45cycles/sec.bandwidth Q _1000 45 -22.2 4.IftheQisnotwithinthespecifiedlimitsthenadjustR2

31、2(See Fig.(.)slightlyandrepeatsteps2and3.Repeatthemeasure- mentsandadjustmentuntiltheQissatisfactory. -8 . . - . J - 111 oj: cr. i . . TroubleShooting Thefollowmginformationisdesignedtobeofassistanceintroubleshootingadefectiveinstrument. Symptoms InstrumentNOT operating,pilot lightNOTon. I -.0 I Ins

32、trumentNOT operating,pilot ON. PossibleCause Linefuseblowndue todefectivefuse, powerlinesurge,or overloadinpower supplysectionofthe instrument. Defectivetube. ShortcirCUltin capacitorsCIA,CIB, CIC,orthecoupling capacitorC3.C6, C9.Cll.C16,C18. TestProcedure Replacefuse,ifthisfuseblowsremove V4,andaga

33、inreplacethefuse.Ifthis fuseblowsitisanindicationof: 1.Shortcircuitinwiringassociated withpowertransformerTl. 2.Shortcircuitinfilamentwiring. 3.Defectivepowertransformer. IffusedoesnotblowwhenV 4isre moved,itindicates: 1.DefectiverectifiertubeV4. 2.ShortcirCUltindirectcurrent wiring. 3.Defectivefilt

34、ercapacitor. ChecktherectIfiertubeV 4first. Remedies 1.Locateandclear shortcircuit. 2.Locateandclear shortcircuit. 3.Replacepower transformer. 1.ReplacetubeV4. 2.Locate-andclear shortcircuit. 3.Locateandre- placedefective capacItor. Replacedefective tube.See TubeReplacement intheMaintenance Section.

35、 Replacedefective capacitor. jO-lotH (P/ICo/O 5/71/ Jr?I/t/S5: CID 27 iL l R43 47K 3M V5 eve R42 R54 6BO R41 15K C21B 20 iLl PLUGIN FILTER R40.412 R25 VVv OOhi CII22KCI622K1 CI8 -lV3A6V3B- 50F;:;N7550fesN7; I f-, - 4 R2eR28 R29 820470K820 1442 RS3 22K C7B 10 11 ($ OCTAL OCTAL I*R34., II IC12CI2 A1 I

36、7-45I 1R33I ICI3CI I1 L.!._I RI2 ,.240 R23 C9 220K V2B tesL7 RI6 220K RI5 5600cle ? R47R48V2A .leSL7 2C 265KI265K C23 .01 11 TI S2 oIFUSEI S2 ,IA PII .SEETRA -=IDETAIL , 0J CSSIS J34 0 C25 R9 )I) I;2f:I RII 22.LFJNlESSOTER.ISENOTE K.:10012CI-;VS:GC O-ES :JO(T,j$:-=:;c,O:.;.GEMEASjJ:EEIIJT 5VOL7S,5C

37、-60CC:.EPO,.ERSP0i.v EASl.EOBEiWEEr-.71-1f:IC:7EDPOINTS ANeCASSISNTHAfOlTYETEROF20,000 OHMVOL-SENSli.TY. *ELECTRICALvALUE:DJlJS-ECATTHEFt.:T:;ql. .ERAGE.1LUES,O.t.P:R-AVBEC1ITTED :2.4I +2.7I IR49 c21 .LCIB I IC550 R420 9 I J2IIL=I iLl B20TiLl RIO B20 = LrC!3175000.nI A 8 . IBOLOMETERI RI f 750 750 A

38、 0 R37 R2 6750 S3B ,0 lO.V l-lGI.j,;S4 20 R3B R7 R55 10K 01SWR-OBI 67S0 220S3:,S3e.S!CAREGANGED SCHEMATICDIAGRAM SERIAL2852 OFMODEL415A 8ABOVE 00 f1-, r:., 1.J_ R1/22K RI55600 RIO820 R4820 Rt5600 RUK C6 .01F CO 50L,.lF MOUNTEDON REAROFBOARD RBi C3 .01L,.lF oo . Jl . . - . 0- - Jl en (l) 1 . Il .-. 0

39、0 41K 3M RB2 10 20 ) / R46Z2K R460K 00 Figure4.Model415AResistorBoardDetail Model415A11/16/54SerialZ85Zandabove . oo Figure5.Model415AResistorBoardDetail RB4 cle .25J,lF MOUNTED ONREAROF BOARD CI12 5000 C9 5000 +1 R21 I +1R172200 +-iRS33H- iIIR16220KIIii iIIR3I iIIR25 .,1- r,.- -t-t.J.t- r-_1It_L ._

40、IL.J MOUNTEDOM REAROF8OMO CI9 50J,lF o o o iIIIR48 iii-IR47265K R83 oo TABLEOFREPLACEABLEPARTS Circuit-hp-Mfr.*T:orReplaceablePartsTable. TABLEOFREPLACEABLEPARTS . Circuit Ref. R9 RIO Rll R12 R13 R14 R15 R16 R17 R18 R19,R20 R21 R22 R23 R24 R25 R26 Description Resistor:fixed,composition, 5,600ohms,10

41、0/0,1 W Resistor:fixed,composltion, 820ohms,100/0,1/2W Resistor:hxed,compositlon, 22,000ohms,100/0,1 W Resistor:hxed,composition, 750ohms,PartofInputAtten #41A-34 Resistor:hxed,composition, 6750ohms,PartofInputAtten. #41A-34 Resistor.fixed,composition, 67,500ohms,PartofInputAHen. 1;41A-34 Resistor:f

42、ixed,composition, 5,600ohms,100/0,1 W Resistor:fixed,composition, 220,000ohms,100/0,W Resistor:fixed,composition, 2,200ohms,100/0,1/2W Resistor:variable,composition, 500,000ohms,lineartaper Thesecircultreferencesnotassigned Resistor.fixed,composition, 1megohm,100/0,1/2W Resistor:variable,composition

43、, 2,000ohms, Resistor:fixed,composition, 220,000ohms,IO%,1/2W Resistor:fixed,composition, 220,000ohms,10%,1/2W Resistor:fixed,composltion, 5,600ohms,100/0,I W Resistor:hxed,composition, 820ohms,10%,1/2W -hp- StockNo. 24-5600 23-820 24-22K 24-5600 23-220K 23-2200 210-59 23-1M 210-14 23-220K 23-220K 2

44、4-5600 23-820 Mfr.*_-:-_-.JL.-.-.JL-I *SeeLtstofManufacturersCodeLettf,r.,.RepliiceablePartsTable.II TABLEOFREPLACEABLEPARTS r-,-.-,-.,-, Circuit Ref.De:lrlption -hp- StockNo. Mfr.*fixed,composItion, 22000ohms,I10%,1 W ResIstorflXpOSItion, 150ohms,i10%.1/2W ResistorfIxed,compOSItion 150ohms+10%,1/2W

45、 ResistorPartofAudIoFl1ter Electricalvalueadju:Jtedatfactory ReSIstor:PartofAudIOFIlter ElectrIcalvalueadjustedatfactory ReSIstor:PartofAudIoFIlter Elect!icalvd.lueadjustedatfactory Rslstor.fixed.ompositlon 820ohms4-10%,1 W ElectrlealvalueadJustedatfactory ReSIstorfi.xpd,composition 311900ohms,:!10%

46、1W Electricalvalueadjustedatfactory ReHstorflxed,c.omposition, lOD000ohms.r10%2W Resl!;torvarlabltwirwound, 50ohms,hrHd.rtaptr ReSIstor:fixed,wlrewound, 800ohms.-+10%.10W Reslstor:itxed,wirewound, 15,000ohms. Resisror:flxed,LompositIon 3megohms.i5%.1/2W Resistor.fixed.cOn1pOSltlOn 47,000ohm1=-.-10%,1 W 2422K 23-470K 23-820 24-22K 23150 23150 24-820 243900 25-10K 2102 2625 233M5 24-47K B GB2231 B EB-1741 B EB8211 B GB2231 B EB1511 B EB1511 B GB8211 B GB3921 B HB1031 HP S Type1-3/4E B EB3055 B GB4731 -.L-.L.-.-/0,cJlu.Ja.Juurac$ 275PAGEMILLROADPALO ALTO.CALIF. U.S.A. CABLlHWPACX