HP-200C-Manual-sn-50000 电路图.pdf

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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 J ETURTO ELCLAB lBCRP. EDlCOTT.Y. INSTRUCTIONANDOPERATINGMANUAL FOR MODEL200C AUDIOOSC

2、ILLATOR Serial50,000andAbove HEWLETT-PACKARDCOMPANY 395PAGEMILLROAD,PALOALTO,CALIFORNIA,U.S.A. RadioFans.CN 收音机爱 好者资料库 GeneralDescription TheModel200CAudioOscillatorIS ageneralpurposeoscillatorwhich usestheresistance-tunedcircuittogeneratealternatingcurrentvoltagesfrom 20to200,000cycles/sec. Thisaud

3、iooscillatorprovidesasourceofvoltageforamplifiertesting, audioresponseoftransmitters,loudspeakerresonancetests,avoltagesource forbridgemeasurementsandequipmentoperatingInthesupersonicrange. PartsSubstitution DifficultIesinprocuringsomeofthepartsusedinthisinstrumentmay causetheelectncalorphysicalvalu

4、estodevIatefromthoseshowninthISin- structionmanual.Thesesubstitutionshavebeenmadesoasnottoimpairthe performanceofthisinstrument.Wheneverreplacementofanyoftheseparts isnecessary,eitherthesubstItutevalueortheonginalvaluemaybeu.sed. . N o o () V1 o o o o c+ o . RadioFans.CN 收音机爱 好者资料库 FrequencyStabilit

5、y- o ., o o o. o Lll u o o N INSTRUCTIONS MODEL20DC AUDIOOSCILLATOR Specifications FrequencyRating- FrequencyRange-20to200,000cycles/sec. FrequencyDialCalibratIOn-20to200 Range- xl20-200cycles/sec. xlO200-2000cycles/sec. xl002000-20,000cycles/sec. xlOOO20,000-200,000cycles/sec. CalibrationAccuracy-2

6、% FrequencyResponse-1db20-150,000cycles/sec. Reference-1000cycles/sec. 10volts,1000ohmsreS1Shveload 2%or.2cycles/sec.(wh1chever1Sgreater) undernormaltemperatureconditions,including initialwarm-up. 10%powerhnevoltagevanahonschangethe frequencylessthan.2%at1000cycles/sec. PowerOutput- PowerOutput-100m

7、illiwattsmtoratedload(10voltsacrossa1000 ohmsload) Distortion-Lessthan1%ofratedoutputfrom20to100,000cycles/sec. Hum-Lessthan.1%ofratedoutput LoadImpedance-1000ohms(reslstve) ApproximateInternalImpedance-30ohmsfrom100to100,000 cycles/sec.Onesideofoutputgrounded. PowerSupplyRating- Voltage-115volts Fr

8、equency=50to60cycles/sec. Wattage-60watts -1- OverallDimensions- CabinetModel-15-1/4longx7-1/4highx10-5/8deep RackModel-19longx7highx10-3/4deep Panel-19longx7high Depthbehindpanel-9-1/4 Weight- CabinetModel-23pounds RackModel-24pounds OperatingInstructions Inspection- Thisinstrumenthasbeenthoroughly

9、testedandinspectedbeforebeing shippedandisreadyforusewhenreceived. Aftertheinstrumentisunpacked,thecoverandbottomplateshouldbe removed(seeMaintenancesection)sothattheinstrumentmaybecarefullyin- spectedfordamagereceivedintransit.Whilethecoverisoffthetubesshould becheckedtoseethattheyarefirmlyseatedin

10、theirsockets.Ifanyshipping damageisfound,followtheprocedureoutlinedintheClaimforDamagein Shipmentpageatthebackofthisinstructionbook. ControlsandTerminals- . o () Fuse-Thefuseholder,locatedontheundersideofthechassisnexttothe powercable,containsaoneamperecartridgefuse. RANGE-Thisrotaryswitchinsertsvar

11、iousrangeresIstorsinthefre- quencydeterminingcircuitoftheoscillator.Thepositionofthisswitchindicates themultiplyingfactorforthefrequencydialcal1bration. ofthe line. ACPower-Thistoggleswitch,whichislocatedinthelowerleftcorner controlpanel,controlsthepowersuppliedtotheinstrumentfromthepower Whentheswi

12、tchisintheonpositiontheredindicatorwillglow. o o o . o FrequencyDial-Thefrequencydialiscalibrateddirectlyincyclesper second-.iorthe.lowestfrequencyrange. AMPL.-Thisvariableresistorcontrolstheamplitudeoftheoscillator voltageadmittedtotheamplifierandthereforetheoutputvoltageoftheinstru- ment.Thiscontr

13、oliscalibratedfrom0to100inarbitraryunits. -2- o ., o o o. o L() u (3 o N PowerCable-Thepowercableconsistsofthreeconductors.Twoof theseconductorscarrypowertotheinstrumentwhilethethirdconductor(green wire)isconnectedtotheinstrumentchassis.Thethirdwireprojectsfromthe cableneartheplugendofthecableandmay

14、beconnectedtoagroundwhenItis desirabletohaveagroundedchassIs. Operation- PlugthepowercableoftheModel200Cintoanommal115volts,50/60 cyclespowersourceandturnontheACpowerswitch.Theinstrumentwillbegin tooperateassoonasthetubeshaveheated,butformaXImumaccuracyawarm- upperiodofabout30minutesISnecessary. Set

15、thefrequencydialandRANGEsWItchsothattheirindIcations,when multipliedtogether,equalsthedeSiredfrequency.Forexample,1.fitISdeSIred toselectanoutputfrequencyof800cyclespersecond,setthefrequencydialto 80andtheRANGEsWItchtoxlO. Connecttheoscillatoroutputbindingpoststotheequipmentbeingdriven andadjusttheA

16、MPL.controlforthedeSiredoutputvoltage. AlthoughtheratedloadfortheModel200Cis1000ohms(resIstive), higherorlowerImpedanceloadsmaybeusedwithoutdamagetotheInstrument. Ahigherimpedanceloadwillresultinlesspoweroutputandalowerimpedance loadwillincreasethepercentageofdIstortIonIntheoutputvoltage. Astheoutpu

17、tvoltageoftheaudIoOSCIllatorISreducedthepercentageof humvoltagewillincrease.AtthelowerlevelsthishumvoltagebecomesqUIte large,relativetothesinewaveoutputvoltage.ThISundesirableconditioncan beremediedbyoperatingtheaudlOoSClllatoratorsl.lghtlybelowratedoutput andinsertingasuitableattenuatorbetweentheoS

18、ClllatorandtheeqUIpmentbeing drivenbytheoscillator;ThevoltagedIVIdercirCUItshownbelowissatisfactory formostapplications. EQUIPMENT MODEL200C 900ohms -0BEING 1 OSCILLATOR vV TESTED S100ohms oj . Pl . ,1 o o o o . o, INSTRUCTIONSFORRECTIFIERTUBEREPLACEMENT TheseinstructionsapplytoanyHewlett-Packardins

19、trumentinwhicha 5V4tubeismountedinthepowerrectifiertubesocket.Whenitisnecessaryto replacetherectifiertube,a5Y3GTtubemaybeusedasareplacementifthe followinginstructionsarefollowed. INSTRUMENTSWITHDCVOLTAGEREGULATORCIRCUIT- The5V4tubemaybereplacedbya5Y3GTtubewithoutanycircuitchanges Afterthe5Y3GTtubeha

20、sbeeninstalled,theregulatedvoltageshouldbemeas- uredtoseeifitagreeswiththevoltageshownontheschematicwiringdiagram intheinstructionbook.Iftheregulatedvoltageisincorrect,itmaybecorrected byfollowingtheinstructionsintheinstructionbook. INSTRUMENTSWITHOUTDCVOLTAGEREGULATORCIRCUIT- The5V4tubemaybereplace

21、dbya5Y3GTtubeprovidingtheresistor,in serieswiththeDCoutputoftherectifier,isremoved.Thisresistordoesnot appearintheschematicwiringdiagramintheinstructionbook.Thefollowing instrumentsusea500ohmsseriesresistor:Models200C,200D,202D,2l0A, 300BCD,andthe400A. . rT. .3-. illrn00 CII 20pl R36R37 500010KOUTPU

22、T OSC.VOlTAGE18-22V ATIO =V2IIV3fpV4 6F6l6J76V6 +185I C59R4. ,5pl1./115K +16 R298 25K R22R23R27R33R34R35 ,.1,loo -C6IR251lit6IIIR31R32 200025K10K47KlOOK C7 250 R21 lOOK R20 47K C4 RI6 RI2 RI5 RII RI4 R9 RI3 RISR2SR3SR4 -RI7 3000 R5 $R6$R7R8 oTUNING CAPACITOR RI8r C2-4 SECTION 1000 525/SECT. VI 6J7 S

23、Ir I IRANGEI: OI l. III /lJ C3 25 = FI-IA fE.:-1 oS2 CI2B 10pl R38 10K CAPACITYINllllFUNLESS OTHERWISENOTED K -1000OHMS MIMEGOHM e.ELECTRICALVALUE AOJUSTEDAT THEFACTORY. AVERAGE VALUE SHOWN. PARTMAYBEOMITTED. 0(SCRE-wDRivERADJJ -4:CHASSIS 01PANEL CONTROL! +S75 NOTES: CONOITIONSOFOCVOLTAGEMEASUREMENT

24、 1.1I5V,50-60CYClEPOWER SUPPLY 2.MEASUREMENT TAKENBETWEENTHE INDICATED POINTS ANDCHASSISWITHAVOLTMETEROF122 MEGOHMSINPUTRESISTANCE 3,SETR29ATZEROANDSIATXIO R39 10K CI3 40/, -+410 u-8H CI4 4pl +425 060 CI2A 20pl 71 RI+R5 - R12+R16-8.50M R2+R6-R11R15-850K R3+R7_RIO+RI4=-84.6k R4+R8=8e18K R9+RI3=8.38K

25、00rn0 = SCHEMATICDIAGRAMOFMODEL200CAUDIOOSCILLATOR SERIAL50000TO .-:,.c:t_.,j_I# ModelZOOCTopView CoverRemoved Model200eBottomView BottomPlateRemoved TABLEOFREPLACEABLEPARTS o ., o o o . (Tj . Il) U) o o N Circuit Ref. Cl C2 C3 C4 C5 C6 C7 C8 C9 CI0 Cll C12ab C13 C14 RI-R16 R17 Description CapacItor

26、:variable,air,100IJ,lJ,f Capacitor:variable,air,530IJ,lJ,f persect. CapacItor:variable,air,25IJ,lJ,f Capacitor:FactoryAdjustment Capacitor:fixed,paper, , 5IJ,f,600vdcw Capacitor:fixed,mica, 20001J,IJ.f,500vdcw Capacitor:fixed,mica, 250IJ,lJ,f,500vdcw Capacitor:fixed,paper, 4,41J,f,600vdcw Capacitor:

27、fixed,paper, . 1IJ,f,600vdcw Capacitor:fixed,electrolytic, 10IJ,f,450vdcw CapacItor:fixed,electrolytic, 20IJ,f,450vdcw Capacitor:fixed,electrolytic, 10,10,10IJ,f,450vdcw Capacitor:fixed,electrolytic, 40IJ,f,450vdcw Capacitor:fixed,paper, 4IJ,f,800vdcw PartofRangeSwitchAssembly Resistor:fixed,wirewound, 3000ohms,10%,lW -hp- StockNo. 12-11 12-5 12-9 16-5 14-13 14-250 17-44 16-1 18-10 18-20 18-31 18-40 17-3 26-3000 Mfr.*.uda,.d.5/.!luuracy 395PAGEMILLROADPALOALTO.CALIF. /,