Marconi_2955B_Calibration_Manual 电路图.pdf

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1、T.O. 33K3-4-2957-l TECHNICAL MANUAL CALIBRATION PROCEDURE FOR RADIO COMMUNICATIONS TEST SET 2955R, 2955B (MARCONI INSTRUMENTS) This publication incorporates Interim Operational Supplement T.O. 33K3-4-2957-1 S-l dated 29 October 2001. Distribution Statement - Distribution authorized to U. S. Governme

2、nt agencies and their contractors for official use or for administrative or operational purposes only, 30 July 1996. Other requests for this document shall be referred to AFMETCAL Detachment l/MLLW, 813 Irving-Wick Dr W, Suite 4M, Heath, OH 43056-6116. Destruction Notice - For unclassified, limited

3、documents, destroy by any method that will prevent disclosure of the contents or reconstruction of the document. Published under Authority of the Secretary of the Air Force 30JANUARY2000 CHANGE 2 - 30 DECEMBER 2001 RadioFans.CN 收音机爱 好者资料库 T.O. 33K3-4-2957-l JST OF EFFECTIVE PA in the outer margins o

4、f the page. Date of issue for original and changed pages are: Original . . ._. 0 ._._. 30 January 2000 Change _._. 1 . ._.,. 30 August 2001 Change . ._. 2 ._. 30 December 2001 TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 50, CONSISTING OF THE FOLLOWING: Page * Change Page * Change Page * Change No.

5、No. No. No. No. No. Title. . 2 A . 2 1 - 17. . 0 18 - 20. . 1 21 - 39. . 0 40 . 2 41 - 45 . 0 46 Blank . 0 A-l . 0 A-2 Blank. . 0 A Change2 USAF RadioFans.CN 收音机爱 好者资料库 TO.33K3-4-2957-1 1CALIBRATIONDESCRWFION: RADIO COMMUNICATIONSTESTSET 2955R,2955B (MARCONIINSTRUMENTS) Table1. TestInstrument(TI) Pe

6、rformanceTest CharacteristicsSpecificationsMethod Frequency InternalFrequency Standard Range:10MHz Accuracy6Xi0 AgingRate:?5X108/month *2 Temperature:* ?5Xi0-,5to55C; ?5Xio-,55to70C Verifiedwith aFrequency Standard Display RFSignalGenerator Range:0.4to1000MHz Accuracy:1countLSD VerifiedwithanElectro

7、nic Counter OutputLevelRange:0.4to1000MHz Nsocket:-135to-15dBm; BNCsocket:-115to+5dBm; One-portduplex:-140to-21.5dBm; Two-portduplex:-115to-15dBm Measuredwith aPower MeterwithPowerSensor and aMicrowave MeasurementSystem SpectralPurity Accuracy:1.8dB,-127dBmat 18to28C(2dB,-127dBmat 0to50Cfor295SRonly

8、) ResidualFM SeeFootnotesattheendoftheTable. Range:0.4to1000MHz Accuracy:(0.3to3.4 kllzbandwidth), 0.4to520MHz:23Hzfor2955R, upto500MHz:13Hzfor2955B; 520to1000MHz:45Hzfor2955R, upto1000MHz:26Hzfor2955B MeasuredwithMicrowave MeasurementSystem 1 RadioFans.CN 收音机爱 好者资料库 T.O.33K3-4-2957-1 Table1.(Coin.)

9、 TestInstrument(Ti)PerformanceTest CharacteristicsSpecificationsMethod RFSignalGenerator(Coin.) SpectralPurity(Cont.) HarmonicsRange:0.4to1000MHz Accuracy: -20dBc,0.4to1.5MHz; -25dBc,1.5to250MHz; -20dBc,250to1000MHz MeasuredwithSpectrum Analyzer SubharmonicsRange:0.4to1000MHz Accuracy:Noneupto530MHz

10、; -25dBc,530to1000MHz MeasuredwithSpectrum Analyzer Spurious SignalsRange:0.4 to1000MHz Accuracy: Carrierupto88MHz: -45dBc,below110MHz; -35dBc,above110MHz; Carrierupto1000MHz(960MHzfor2955B): -60dBc MeasuredwithSpectrum Analyzer SingleSideband PhaseNoise Range:0.4to1000MHz Accuracy:(20kHzoffset) 295

11、5R:-106dB/Hz,0.4to500MHz; -100 dB/Hz,500to1000MHz; 2955B:-110dBc/Hz,0.4to500MHz; -104dBc/Hz,500to1000MHz MeasuredwithaPhase NoiseCalibrationSystem ModulationGenerator AmplitudeModulationRange:1.5to400MHz DepthRange:0to99%,2OHzto2OkHz Accuracy: MeasuredwithMicrowave MeasurementSystem 7%ofsetting1digi

12、tat1kila, 0to85%AM; 10%ofsetting1digit,50Hzto5kHz, 0to70%AM; 15%ofsetting1digit,50Hzto15kllz, 0to85%AM 2 T.O.33K3-4-2957-l Table1.(Cont.) Frequency Modulation Deviation PhaseModulation Deviation Accuracy: 50Hzto5kHz,upto70% AM: 1.5Vp-pfor30%AM10%,1%AM; 50Hzto15kHz,upto85%AM: 1.5Vp-pfor30%AM15%,1%AM

13、Range0.4to1000 MHz Range:0 to25kHzdeviation,20Hz to20kHz Accuracy:7%ofrdg10Hzat1kHz; 10%ofrdg,50Hzto15kHz Range:5kHzdeviation Accuracy:1%THDat1kHzin a0.3to 3.4 kHzbandwidth Range:0 to30kHzdeviation,1Hz to50kHz Accuracy:1Vp-pfor5kHzdeviation, 10% Range:0.4 to1000MHz Range:0 to10radians, 0.3 to 3.4kHz

14、 Accuracy:8%ofrdgat1kHz; 11%ofrdgfrom0.3to 3.4kHz Range:5radians Accuracy:2%THDat1kHzin a 0.3 to 3.4kflzbandwidth TestInstrument(TI)PerformanceTest CharacteristicsSpecifications Method ModulationGenerator(Cont.) AmplitudeModulation(Cont.)Range:1.5to400MHz DistortionRange:30%AM Accuracy:2%TFID at1kHz

15、 in a 0.3 to 3.4kHzbandwidth ExternalSensitivityRange:0to99 %, 20Hzto20kHz Distortion ExternalSensitivity MeasuredwithanAudio AnalyzerandMicrowave MeasurementSystem Verified withMicrowave MeasurementSystemand SynthesizedFunction Generator MeasuredwithMicrowave MeasurementSystem MeasuredwithanAudio A

16、nalyzerandMicrowave MeasurementSystem MeasuredwithFrequency SynthesizerandMicrowave MeasurementSystem MeasuredwithMicrowave MeasurementSystem MeasuredwithanAudio Analyzer Distortion 3 T.O.33K3-4-2957-1 Table1.(Cont.) Range:50Hzto15kllz,usable10Hzto20kHz Accuracy:0.01Hz,from10to100Hz; 0.1Hzfrom100Hzt

17、o20kHz Range:50Hzto15kHz, 0.1mVto4.095Vrms (SineandSquare Wave); 0.1mVto4.095Vpeak (TriangleandSaw-tooth Wave) Accuracy.5%ofrdg1step (0.1 mVstepsfrom0.1to 409.0mV, 1mVstepfrom409 mVto4.095V) Range:50Hzto15kHz Accuracy:(2955R) 0.5%THDat1kHz; 1.0%THDfrom50Hz to15kHz Accuracy:(2955B)(excludingresidualn

18、oise) 0.3%THDat1kFlz; 0.6%THDfrom 50Hzto15kllz TestInstrument(Ti)PerformanceTest CharacteristicsSpecificationsMethod Range:0.4to1000MHz Range:0to10radians,0.3to3.4kHz Accuracy:1.0Vp-pfor5radians at12% at1kHz Range:1.5to1000MHz Accuracy:SameasInternalFrequency Standard1digit Range:1.5to1000MHz Accura

19、cy:Nsocket,?5mW(transmitter testmode selected);?20mW(one-port duplexmode) Modulation Generator(Cont.) Phase Modulation(Cont.) ExternalSensitivity RFFrequencyMeter Sensitivity AFGenerator Frequency OutputLevel Distortion(Sineonly) Measuredwith Frequency Synthesizer andMicrowave MeasurementSystem Veri

20、fiedduringInternal FrequencyStandardand Displaycalibration Verified withSignal GeneratorandPower Meterw/PowerSensor Measured with Electronic Counter Measured with Digital Multimeter MeasuredwithanAudio Analyzer 4 T.O.33K3-4-2957-1 Table1.(Co,u.) TestInstrument(Ti)PerformanceTest CharacteristicsSpeci

21、ficationsMethod RFPowerMeter Range:N-typesocket 0.05to150W,1.5to1000MHz Accuracy: 10%ofrdg1digit,1.5to500MHz; 15%ofrdg1digit,500to960MHz; 20%ofrdg1digit,960to1000MHz; 1.25dB1digit,?5mW(5to50mWfor 2955B)overtheranges825to905MHz from+15to+25C VerifiedwithSignal GeneratorandPower Meter ModulationMeter

22、AmplitudeModulationRange:1.5to400MHz DepthRange:0to90%below100MHz, Oto8O%from100to400MHz, SOHztolOkHz(lOHztol5kHzfor2955R) Accuracy:5%ofrdg1digit at 1kHz;8.5%ofrdg1digit from50Hzto10kHz (1digit is1%AMdepth) Verifiedwith aSignal GeneratorandMicrowave MeasurementSystem Demodulation Distortion Range:30

23、%AM,lkHz,0.3to3.4kHz bandwidth Accuracy:2%THDat?21MHzcarrier; 5%THDat 10mW(Nsocket),or 0.1 mW(BNCsocket) VerifiedontheTIdisplay Accuracy:1%forinputsin a0.3to 3.4kHz bandwidth FrequencyModulation Range:1.5to1000MHz Deviation Range:0to25kHzdeviation,50Hzto 10kHz(10Hzto15kHzfor2955R) Accuracy:5%ofrdg1d

24、igitat1kHz; 7.5%of rdg1digitfrom 50Hzto10kHz (1digitis0.01 kllzupto2.5kHz,1%up to25 kHz) VerifiedwithaSignal Generator andMicrowave MeasurementSystem 5 TO.33K3-4-2957-1 Table1.(Cont.) TestInstrument(Ti)PerformanceTest CharacteristicsSpecificationsMethod ModulationMeter(Cont.) FrequencyModulation(Con

25、t.)Range:1.5to1000MHz Demodulation Distortion Range:5kllzdeviation Accuracy:20mW(Nsocket)or 0.2 mW(BNC socket) VerifiedontheTIdisplay Accuracy:(ina0.3to3.4kHzbandwidth) 2955R: 23Hzrmsupto500MHz, 45Hzrmsupto1000MHz; 2955B: 15Hzrmsupto500MHz; 20kHz Accuracy: 50HzHigh-PassFilter, 1% atrates?200Hz; 300H

26、zHigh-PassFilter, 1% atrates?1kHz; 3kHzLow-PassFilter, 1% atrates?1kHz; 15kflzLow-PassFilter, 20kHzLow-PassFilter, 1%atrates?lOkHz Range:10MHz Accuracy: 1.25X108 8 TO.33K3-4-2957-1 MinimumUse CalibrationSub- NounSpecificationsEquipmentItem 2.3MICROWAVE MEASUREMENT SYSTEM(Cont.) Range:(ResidualAM) Ac

27、curacy:0.01% Hewlett-Packard 8902MS Range:(ResidualFM) Accuracy:8 Hzrmsat1300MHz, decreasinglinearlywithfrequency to1HzrmsforlOOMHzandbelow TAR:3.9:1 2.4SPECTRUM ANALYZER Hewlett-Packard 8563E H-P 8566B Accuracy:1.6dB(ScaleFidelity) 2.5PHASE NOISE MEASUREMENT SYSTEM Range:100Hzto100kHzoffset Accurac

28、y:2dB Hewlett-Packard 3048MS 2.6SYNTHESIZED FUNCTION GENERATOR Range:20Hzto 20kHz, Otol.5Vp-p,OtolVrms Hewlett-Packard 3325B Accuracy:1dB 2.7SIGNAL GENERATOR Range:0.4 to1000MHz, at-30to+10dBm Hewlett-Packard 8662A Accuracy:(Amplitude) 2.5%ofsetting 2.8AUDIOANALYZERRange:20Hzto100kHz, 0.001to100%THD

29、 Hewlett-Packard 8903B Accuracy:1dB,20Hzto20kHz; 2dB,2Oto100kHz 2.9DIGITAL MULTIMETER Range:0 to10V rms, 50Hzto15kHz Hewlett-Packard 3458A Accuracy:0.5%ofrdg Range:0to100VAC, 50Hzto 10kHz Accuracy:0.05%ofsetting Fluke 5100B Range:0.4 to4000MHz 2.10 METERCAUBRATOR 9 TO.33K3-4-2957-1 MinimumUseCalibra

30、tionSub- NounSpecificationsEquipmentItem 2.11 POWERSPLIUER 2.12 POWER METER 2.13 POWER SENSOR 2.14ATFENUATOR 2.15SYNTHESIZED SIGNAL GENERATOR 2.16 POWER AMPLIFIER Range:1.5to400MHz Accuracy:?0.15dB Range:1.5to1000MHz, -30 to +20dBm Accuracy:2%ofrdg Range:1.5to1000 MHz Accuracy:2.7%of charted value R

31、ange:10dB Accuracy:Charted Range:0to+20dBm,0.4 to 1000MHz Accuracy:(Amplitude) 2.5%ofsetting Range:(ResidualAM) Accuracy:0.25% Range:(ResidualFM) Accuracy:5Hzrms Range:2to100W,10to 400MHz Hewlett-Packard 11667A Hewlett-Packard 436A Hewlett-Packard 8482A Hewlett-Packard 8491B-010 Hewlett-Packard 8642

32、B MicrowaveProducts SSPAO24O-22/6140 2.17COUPLER SET 2.18 POWER METER 2.19 POWER DIVIDER Accuracy:N/A Range:10to400MHz Accuracy:AFPSL Certified Range:ltolOmW Accuracy:2.5%ofrdg Range:lOOHzto2OkHz Accuracy:N/A PremierMicrowave 1852A Hewlett-Packard 432B-H05 Weinschel 1506A 10 TO.33K3-4-2957-l Noun Mi

33、nimumUse Specifications Calibration Equipment Sub- Item 2.20LEVEL GENERATOR Range:20mVto250 mV at400 Hz Hewlett-Packard 3335A Opt001 Accuracy:N/A 2.21FEEDTHROUGH TERMINATION Range:501 Accuracy:0.2%ofnominal Hewlett-Packard 11048C 3PRELIMINARY OPERATIONS: 3.1Reviewandbecomefamiliarwithentireprocedure

34、beforebeginningCalibrationProcess. IiWARNINGii Unlessotherwisedesignated,andprior tobeginningtheCalibrationProcess, ensurethatalltestequipmentvoltageand/or currentoutputsaresettozero(0) orturnedoff,whereapplicable.Ensurethatallequipmentswitchesaresetto theproperpositionbeforemakingconnectionsorapply

35、ingpower. 3.2ConnecttheTI andtestequipmentto theappropriatepowersourceandsetallSTANDBYJPOWERswitchesto ON.Allowthe TI a24hourwarm-upperiod.Allowthe testequipmenttheappropriatewarm-upasdeterminedby themanufacturer. 3.3PerformTISELFTESTbeforebeginning calibration. NOTE Beforeimplementingtheselftesting

36、procedure,remove anyleadswhichare connectedto thecoaxialconnectorstopreventextraneouspick-upaffectingthe readings. NOTE IntheRFCountertoRFGeneratorpowertest,thedifferencein thesettingand readinglevelsis dueto one-portduplexoperationbeingselectedforthetest. 3.4PressTIHELPkeyforSELFTEST Menu, pressALL

37、TESTSsoftkeyto initiate selftests. 3.5TheresultsofthethirteenindividualtestsmustindicatePASSED. 3.6PressTIRETURNsoftkey toviewHELP menu. 11 T.O.33K3-4-2957-1 3.7PressTICHANGEPARAMETERSsoftkey.Set theTIto600?BALANCEDAFACCESSORYandthen setthe20dBAFATTENUATORtoNOTF1TFED.PresstheRETURNsoftkeytwicetoretu

38、rntothemain screen. 3.8CharttheAttenuatorat10,400,800,850and1000MHz. 3.9 AnnotateaLimitedCertificationLabelwithResidualFMlimitedto?0.03kHzupto500MHz (?0.02kHzfor2955B)and?0.05kHzupto1000MHz(?0.03kHzfor2955B). 4CALIBRATIONPROCESS: NOTE Unlessotherwise directed,verifytheresultsofeachtestand takecorrec

39、tive actionwheneverthetestrequirementis notmet,beforeproceedingwiththe nextstep. 4.1INTERNALFREOUENCYSTANDARDANDDISPLAY CALIBRATION: NOTE Overall TIaccuracydependsuponthecorrect settingof theinternal10MHz standard.The10MHzTimeBasecannotbecheckedfroma TIconnector, thereforea10MHzRFoutputwillbemeasure

40、dfromthe TI RFN/OUT connector. NOTE AdjustmentoftheTime BaseOscillatorisnormalduetotheAgingRateofthe crystals.This iscommontoallQuartz Oscillators.Theadjustmentactions takenduringthiscalibrationwillensurethegreatest reliabilityoftheTI by adjustingthetimebasereferencetothenominalvalueeachtimeitiscali

41、brated. 4.1.1ConnecttheFrequencyStandard10MHzREFOUTtoElectronicCounterEXTFREQSTDinput (1-10MHz)ontherearpanelof theElectronicCounter.Set theElectronicCounterINTSTD/EXTSTDswitch (rearpanel) toEXTSTD. 4.1.2Connectthe TIRFIN/OUTBNCconnectortoElectronicCounterCHANNELA inputconnector. 4.1.3SetTI MODEto R

42、x TESTfor2955RorRECEIVERTESTfor2955B,GENFREQto 10MHz,MODto OFF,RFIN/OUTconnectortoBNCandLEVELto-10dBm. NOTE Thevaluesinthefollowingsteparederived frommultiplicationoftheAging Ratetodeterminetheoffsetatoneyear.Usethesecalculatedoneyearvalues regardlessofthelengthofthecalibrationintervalforthisTI in T

43、.O.33K-i-100-1/2.The longestagingratespecificationnottoexceed1year has been usedtocalculatethelimits. 12 TO.331(3-4-2957-1 4.1.4AdjusttheElectronicCounter controlsasrequiredforastabledisplayindicationandthenpushRESET. VerifytheElectronicCounterindicationis9999 994to10000 006Hz1countofLSD. 4.1.5Setth

44、eTILEVELto minimumanddisconnectthe testsetup. 4.1.6ConnecttheFrequencyStandard1MHzREFOUTto theElectronicCounterEXTFREQSTDinputand the TIEXT.STD1MHzinput (rearpanel). 4.1.7Connectthe TIRFN/OUTBNCconnectortoElectronicCounterCHANNELA inputconnector. 4.1.8Onthe TI, pressthe RFIN/OUTSELECTtoselecttheBNCo

45、utput. 4.1.9SettheElectronicCounterresolution,asrequired, to1Hz. 4.1.10SetTIMODEtoRxTESTfor2955RorRECEIVERTESTfor2955B,GENFREQto 0.400MHz,LEVEL to -10dBm, andMODtoOFF. 4.1.11TheElectronicCountermustindicatewithinthevalueslisted intheLimitscolumnofTable2. 4.1.12Repeatsteps4.1.10and4.1.11for theremain

46、ingvalueslisted in Table2. NOTE Forfrequencies above500MHz,connecttheTIBNCconnectortothe FrequencyConverterINPUTanduse,asrequired,withtheElectronicCounter. Table2. TIFreq(MHz)Limits(Hz) 0.400399999to 400001 500.0000499999999to500000001 999.0000998 999 999to999 000001 4.1.13SettheTILEVELtominimumandd

47、isconnectthetestsetup. 4.1.14ToensurereliabilityoftheTI,thefollowingactionwillbetaken:IfTI passedtheabovesteps,performthe applicableadjustmentstepsinAppendixA,andenter NOADJUSTMENTACTIONintotheMaintenanceData CollectionSystem.IfTIfailed,performtheapplicable steps listedinAppendixA andenterappropriat

48、e ADJUSTMENTACTIONintotheMaintenanceDataCollectionSystem. 4.2RFSIGNAL GENERATORCALIBRATION: 4.2.1OUTPUTLEVELCALIBRATION: 4.2.1.1StandardizePowerMeter(2.12)andPowerSensorasrequiredfor a powermeasurementof +10dBm(10mW). 13 TO.331(3-4-2957-1 NOTE SetPowerMeter(2.12) Calibration FactorasrequiredfortheTIoutput frequencybeingverified. 4.2.1.2ConnecttheTI RFIN/OUTBNCconnectorthroughthePowerSensortothePowerMeter(2.12). 4.2.1.3Set the TIMODEto Rx