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1、毕业设计(论文)外文资料翻译系别：电子信息系专业：通信工程班级：B090310姓名：王海涛学号：B09031018外文出处：annulreviews附件：1.原文；2.译文2013年06月SignalgeneratorSignalgeneratorisreferstoproducetheparametersofelectrictestingsignalequipment.Accordingtothesignalwaveform,thefunctioncanbedividedintosinesignal(waveform)signal,puls
2、esignalandrandomsignalgeneratorandsoonfourcategories.Signalgeneratoralsocalledsourceoroscillator,inproductionpracticeandscienceandtechnologyhasbeenwidelyusedinthefield.Variouswaveformcurvecanberepresentedwithtrigonometricfunctionequation.Canproducevariouswaveform,suchastria
3、nglewave,sawtoothwave,rectanglewave(includingsquarewave),sinewaveofthecircuitiscalledafunctionsignalgenerator.Alsoknownasthesignalgenerator,whichisusedtoproducespecificparametersrequiredforthecircuitbeingmeasuredelectrictestingsignal.Intesting,research,oradjusttheelectronic
4、circuitsanddevices,measurementcircuitofsomeelectricparameters,suchasmeasuringthefrequencyresponse,noisecoefficient,forvoltmeter,etc,arerequiredtoconformtotheconditionssetbythetechnologyofelectricalsignals,tosimulateausedintheactualworkofexcitationsignalofthedeviceundertest.
5、Whentherequirementofsystemsteadystatecharacteristicsofthemeasurement,needtousesinesignalsourceofknownamplitudeandfrequency.Whenthetransientcharacteristicsofthetestingsystem,andtousefronttime,pulsewidthandrepetitionperiodknownrectangularpulsesource.Andtheparametersofthesigna
6、lsourceoutputsignal,suchasfrequency,waveform,theoutputvoltage,orpower,canundercertain?WorkingprincipleofthesignalgeneratorSignalgeneratorisusedtoproducefrequencyof20hz~200KHZsinesignal(lowfrequency).Besideshasthevoltageoutput,andpoweroutput.Sotheusageisverywide,canbeusedfor
7、testingorrepairavarietyofelectronicinstrumentsandequipmentinthefrequencycharacteristicofthelowfrequencyamplifier,gain,passband,alsocanbeusedforoutermodulationsignalofhighfrequencysignalgenerator.Inaddition,electronicvoltmeterincalibration,itcanprovideacvoltagesignal.Low-fre
8、quencysignalgenerator:theprincipleofthesystemincludingthemainvibrationlevel,themai
