Agilent-N9020A使用说明书

FunctionalTestsAgilentTechnologiesN9020AMXASignalAnalyzerManufacturingPartNumber:N9020-90086Supersedes:N9020-90054PrintedinUSAAugust2008©Copyright2006-2008AgilentTechnologies,Inc.2NoticeTheinformationcontainedinthisdocumentissubjecttochangewithoutnotice.AgilentTechnologiesmakesnowarrantyofanykindwithregardtothismaterial,includingbutnotlimitedto,theimpliedwarrantiesofmerchantabilityandfitnessforaparticularpurpose.AgilentTechnologiesshallnotbeliableforerrorscontainedhereinorforincidentalorconsequentialdamagesinconnectionwiththefurnishing,performance,oruseofthismaterial.WheretoFindtheLatestInformationDocumentationisupdatedperiodically.ForthelatestinformationaboutAgilentMXAsignalanalyzer,includingsoftwareupdatesandapplicationinformation,pleasevisitthefollowingInternetURLs:(DANL)Procedure...............................................................143.FrequencyReadoutAccuracyProcedure...............................................................184.SecondHarmonicDistortion(SHD)TestLimits..............................................................20Procedure...............................................................225.AmplitudeAccuracyat50MHzProcedure...............................................................25TestingPreampOption(P03,P08,P13,P26)....................................27Procedure.............................................................276.FrequencyResponse(Flatness)Procedure...............................................................317.FrequencyResponse(Flatness),PreampOnProcedure...............................................................358.ScaleFidelityProcedure...............................................................399.BBIQInputFrequencyResponse(OptionBBAonly)Procedure...............................................................434ContentsTableofContents5FunctionalTests1FunctionalTestsFunctionaltestsaretestsofvariousinstrumentparametersthatgiveahighdegreeofconfidencethattheanalyzerisoperatingcorrectly.Theyarerecommendedasacheckofanalyzeroperationforincominginspectionorafterarepair.Measurementuncertaintyanalysisisnotavailableforfunctionaltests,andtheanalyzerischeckedagainstlimitsthatarewiderthanthepublishedspecifications.Thefunctionaltestsaredesignedtotestananalyzeroperatingwithinthetemperaturerangedefinedbytheanalyzerspecificationsusingaminimumsetoftestequipment.Ifatestdoesnotpass,performanceverificationtestsmustberuntodeterminewhetheraproblemexists.6Chapter1FunctionalTestsFunctionalTestVersusPerformanceVerificationFunctionalTestsFunctionalTestVersusPerformanceVerificationFunctionaltestsuseaminimumsetoftestequipmenttocheckamuchsmallerrangeofparameters(andalimitednumberofdatapointsforeachparameter)thandoperformanceverificationtests.Functionaltestsuselimitsthatarewiderthanthepublishedspecifications;measurementuncertaintyanalysisisnotavailableforfunctionaltests.NOTEIfafunctionaltestdoesnotpass,youmustrunperformanceverificationteststodeterminewhetheraproblemexists.Performanceverificationtestsspanawiderangeofinstrumentparametersandprovidethehighestlevelofconfidencethattheinstrumentconformstopublishedspecifications.Thesetestscanbetimeconsumingandrequireextensivetestequipment.Chapter17FunctionalTestsContentsofthisDocumentFunctionalTestsContentsofthisDocumentThischapterincludesthefollowing:•“BeforePerformingaFunctionalTest”onpage8(whattodofirst).�“TestEquipment”onpage9(alistoftheequipmentrequiredforallofthetests).SubsequentchaptersdescribethefollowingFunctionalTests:�“DisplayedAverageNoiseLevel(DANL)”onpage13�“FrequencyReadoutAccuracy”onpage17�“SecondHarmonicDistortion(SHD)”onpage19�“AmplitudeAccuracyat50MHz”onpage23�“AmplitudeAccuracyat50MHz”onpage23�“FrequencyResponse(Flatness)”onpage29�“FrequencyResponse(Flatness),PreampOn”onpage33�“ScaleFidelity”onpage37�“BBIQInputFrequencyResponse(OptionBBAonly)”onpage41Eachfunctionaltestincludes:�Testlimits(pass/failcriteria)�Adescriptionofthetest�Theequipmentrequiredforthetest�Afigureshowinghowtoconnecttheequipment�Step-by-stepinstructions�Oneormoretablesinwhichtorecordthemeasurementresults8Chapter1FunctionalTestsBeforePerformingaFunctionalTestFunctionalTestsBeforePerformingaFunctionalTest1.Ensurethatyouhavethepropertestequipment.2.Switchontheunitundertest(UUT)andletitwarmup(inaccordancewithwarm-uprequirementsintheinstrumentspecifications).3.Allowsufficientwarm-uptimefortherequiredtestequipment(refertoindividualinstrumentdocumentationforwarm-upspecifications).4.Ensurethattheanalyzer’sfrequencyreferenceissettoInternal:a.PresstheInput/Output,More,FreqRefInkeys.b.IftheFreqRefInsoftkeydoesnotshowInternal,presstheFreqRefInsoftkeyandselectInter