電子信息工程專業(yè)英語教程（第5版） 課件 Lesson 28 Signal Sources

Lesson28SignalSources《電子信息工程專業(yè)英語教程（第5版）》Unit10ElectronicInstruments&MeasurementsLesson28SignalSourcesBackgroundsTexttour

LanguageinuseVocabularyStructureReading/writingtechniques2024/5/292《電子信息工程專業(yè)英語教程（第5版）》TerminologyOscilloscope

示波器Logicanalyzer

邏輯分析儀Multiplexer

多路復(fù)用器Stimulussignal

激勵(lì)信號(hào)Backgrounds2024/5/293《電子信息工程專業(yè)英語教程（第5版）》TerminologyDesignspecification

設(shè)計(jì)規(guī)格Fullrange

滿量程Troubleshooting

發(fā)現(xiàn)并修理故障DMM:DigitalMultimeter

數(shù)字多用表UUT:UnitUnderTest

被測設(shè)備Backgrounds2024/5/294《電子信息工程專業(yè)英語教程（第5版）》TerminologyAWG:ArbitraryWaveformGenerator

任意波形發(fā)生器AFG:ArbitraryFunctionGenerator

任意函數(shù)發(fā)生器DG:DataGenerator

數(shù)據(jù)發(fā)生器Verticalresolution:

垂直分辨率

Backgrounds2024/5/295《電子信息工程專業(yè)英語教程（第5版）》TexttourOutlineTheCompleteMeasurementSystemWhatisaSignalSource?TypesofDigitalSignalSourcesSignalGenerationTechniquesBasicSignalSourceApplicationsSignalSourceHardwareArchitecture:TheArbitraryWaveformGenerator2024/5/296《電子信息工程專業(yè)英語教程（第5版）》TheCompleteMeasurementSystemAnacquisitioninstrumentanoscilloscopealogicanalyserAstimulusinstrumentThesignalsource,orsignalgenerator,isthestimulussourcethatpairswithanacquisitioninstrumenttocreatethetwoelementsofacompletemeasurementsolution.2024/5/297《電子信息工程專業(yè)英語教程（第5版）》WhatisaSignalSource?Asignalsourceisnothinglessthanthecornerstoneofalmostanyinstrumentationsetupusedinhardwaredesign,debug,orevaluationprojects.Itisakeyengineeringtool.Itisanessentialtroubleshootingaidforthetechnician.Itisasurrogateforanautomotiveignitionpulse,aheartpacemaker,oraguidedmissile’sgyrooutput.SecondonlytotheubiquitousDMM,signalsourcesareperhapsthemostuniversalclassofelectronictestinstruments.2024/5/298《電子信息工程專業(yè)英語教程（第5版）》TypesofDigitalSignalSourcesAWG:AWGcanproduceanywaveformyoucanimagine.Youcanuseavarietyofmethods-frommathematicalformulaeto“drawing”thewaveform-tocreatetheneededoutput.2024/5/299《電子信息工程專業(yè)英語教程（第5版）》TypesofDigitalSignalSourcesAFG:Typicallythisinstrumentoffersfewerwaveformvariations,butwithexcellentstabilityandfastresponsetofrequencychanges.IftheUUTrequirestheclassic“sineandsquare”waveformsandtheabilitytoswitchalmostinstantlybetweentwofrequencies,theAFGistherighttool.AnadditionalvirtueistheAFG’lowcost,whichmakesitveryattractiveforapplicationsthatdonotrequireanAWG’sversatility.2024/5/2910《電子信息工程專業(yè)英語教程（第5版）》TypesofDigitalSignalSourcesDG:Thisthirdtypeofsignalsourcemeetsthespecialstimulusneedsofdigitaldevicesthatrequirelong,continuousstreamsofbinarydata,withspecificinformationcontentandtimingcharacteristics.2024/5/2911《電子信息工程專業(yè)英語教程（第5版）》SignalGenerationTechniquesSimulation:“Building”aneventorsequenceofevents,basedonaspecificwaveformdefinition(oftenfromasimulatororalibraryofwaveforms)Replication:CapturinganexistingsignalonanoscilloscopeandsendingittothesignalsourceforreproductionSubstitution:Creatingand/ormodifyingadefinedsignaltosubstituteforasignalfromunavailablecircuitry2024/5/2912《電子信息工程專業(yè)英語教程（第5版）》SignalGenerationTechniquesSignalsourcescanusestandard,user-created,orcapturedwaveforms,addingimpairmentswherenecessaryforspecialtestapplications2024/5/2913《電子信息工程專業(yè)英語教程（第5版）》BasicSignalSourceApplications

VerificationAnalyzingDigitalModulation WirelessequipmentdesignersdevelopingnewtransmitterandreceiverhardwaremustsimulatebasebandI&Qsignals–withandwithoutimpairments–toverifyconformancewithemergingandproprietarywirelessstandards.Somehigh-performancearbitrarywaveformgeneratorscanprovidetheneededlow-distortion,high-resolutionsignalsatratesupto12.5gigabitpersecond(12.5Gbps),withtwoindependentchannels,oneforthe“I”phaseandoneforthe“Q”phase.2024/5/2914《電子信息工程專業(yè)英語教程（第5版）》BasicSignalSourceApplications

characterizationTestingD/AandA/DConverters Newly-developeddigital-to-analogconverters(DAC)andanalog-to-digitalconverters(ADC)mustbeexhaustivelytestedtodeterminetheirlimitsoflinearity,monotonicity,anddistortion.Astate-of-the-artAWGcangeneratesimultaneous,in-phase

analoganddigitalsignalstodrivesuchdevicesatspeedsupto12.5Gbps.2024/5/2915《電子信息工程專業(yè)英語教程（第5版）》BasicSignalSourceApplications

stress/margintestStressingCommunicationReceivers Engineersworkingwithserialdatastreamarchitectures(commonlyusedindigitalcommunicationsbusesanddiskdriveamplifiers)needtostresstheirdeviceswithimpairments,particularlyjitterandtimingviolations.Advancedsignalsourcessavetheengineeruntoldhoursofcalculationbyprovidingefficientbuilt-injittereditingandgenerationtools.Theseinstrumentscanshiftcriticalsignaledgesaslittleas20ps.

2024/5/2916《電子信息工程專業(yè)英語教程（第5版）》SignalSourceHardwareArchitecture

TheArbitraryWaveformGeneratorFundamentally,anAWGisasophisticated“playback”systemthatdeliverswaveformsbasedonstoreddigitaldataDigitalsamplingAsimplifiedblockdiagramofanAWG2024/5/2917《電子信息工程專業(yè)英語教程（第5版）》SignalSourceHardwareArchitecture

TheArbitraryWaveformGeneratorAWGsusestoreddigitalsamplestoconstructawaveform.2024/5/2918《電子信息工程專業(yè)英語教程（第5版）》SignalSourceHardwareArchitecture

TheArbitraryWaveformGeneratorAWGblockdiagram(simplified)2024/5/2919《電子信息工程專業(yè)英語教程（第5版）》VocabularyAcquisitionstimulusmarginevaluationancillarybriefStructureReading/writingtechniquesLanguageinuse2024/5/2920《電子信息工程專業(yè)英語教程（第5版）》Vocabulary2024/5/2921《電子信息工程專業(yè)英語教程（第5版）》AcquisitionindictionaryTheactofacquiring.

獲得，取得Somethingacquired,especiallyanadditiontoanestablishedcategoryorgroup.

獲得物Theprocessoflocatingasatellite,guidedmissile,ormovingtargetsothatitstrackororbitcanbedetermined.

搜索，探測2024/5/2922《電子信息工程專業(yè)英語教程（第5版）》AcquisitionintextAnacquisition

instrument–usuallyanoscilloscopeorlogicanalyser–isprobablythefirstthingthatcomestomindwhenyouthinkaboutmakingelectronicmeasurements.

當(dāng)進(jìn)行電子測量時(shí)，人們首先想到的很可能是一件采集儀器——通常是示波器或邏輯分析儀。

2024/5/2923《電子信息工程專業(yè)英語教程（第5版）》Acquisitioninuse

aircrafttargetacquisition空中目標(biāo)的搜索high-speeddataacquisition高速數(shù)據(jù)采集languageacquisition語言習(xí)得techniqueacquisition技術(shù)引進(jìn)2024/5/2924《電子信息工程專業(yè)英語教程（第5版）》StimulusindictionarySomethingcausingorregardedascausingaresponse.

刺激因素Anagent,anaction,oraconditionthatelicitsoracceleratesaphysiologicalorpsychologicalactivityorresponse.

刺激物2024/5/2925《電子信息工程專業(yè)英語教程（第5版）》StimulusintextThetoolsetfordigitaldesigncharacterizationdiffersfromitscounterpartinanalog/mixedsignaldesign,butbothmustincludestimulusinstrumentsandacquisitioninstruments.Thesignalsource,orsignalgenerator,isthestimulussourcethatpairswithanacquisitioninstrumenttocreatethetwoelementsofacompletemeasurementsolution.用于數(shù)字設(shè)計(jì)特性評(píng)價(jià)的測量儀器和用于模擬/混合信號(hào)設(shè)計(jì)的測量儀器是不一樣的，但兩者一定都包含激勵(lì)信號(hào)產(chǎn)生儀器和信號(hào)采集儀器。信號(hào)源（或信號(hào)發(fā)生器）和采集儀器是構(gòu)成一個(gè)完整測量解決方案的兩大基本組成部分。2024/5/2926《電子信息工程專業(yè)英語教程（第5版）》Stimulusinuse

underthestimulusofthishopeLightisastimulustogrowthinplants.2024/5/2927《電子信息工程專業(yè)英語教程（第5版）》MarginindictionaryAnedgeandtheareaimmediatelyadjacenttoit;aborder.

邊緣，邊界Theblankspaceborderingthewrittenorprintedareaonapage.

空白Alimitinaconditionorprocess,beyondorbelowwhichsomethingisnolongerpossibleoracceptable:

極限themarginofrealityhascrossedthemarginofcivilizedbehavior.2024/5/2928《電子信息工程專業(yè)英語教程（第5版）》MarginindictionaryAnamountallowedbeyondwhatisneeded:

余地Ameasure,quantity,ordegreeofdifference:

差數(shù)Theminimumreturnthatanenterprisemayearnandstillpayforitself.

邊際收益Theborderofaleaf.

樹葉的邊緣2024/5/2929《電子信息工程專業(yè)英語教程（第5版）》MarginindictionaryIntelegraphy,ameasureoftheabilityofthereceivingapparatustocopywithtimingerrorsinthereceivedsignal.Inprinting,thespacesurroundingthetypearea,comprisinghead,tail,backandforedge.2024/5/2930《電子信息工程專業(yè)英語教程（第5版）》MarginintextTociteanotherexample,engineersmustcharacterizetheiremergingdesignstoensurethatthenewhardwaremeetsdesignspecificationsacrossthefullrangeofoperationandbeyond.Thisisknownasmargin

orlimittesting.

舉另外一個(gè)例子。為了確保新硬件在整個(gè)操作范圍及該范圍之外滿足性能設(shè)計(jì)要求，工程師們必須對即將完成的設(shè)計(jì)進(jìn)行特性評(píng)價(jià)。這就是所謂的“邊緣測試或極限測試”。

2024/5/2931《電子信息工程專業(yè)英語教程（第5版）》Margininuse

byacomfortablemargin

以較大的多數(shù)byanarrowmargin

以微弱多數(shù)bya...margin

以...之差2024/5/2932《電子信息工程專業(yè)英語教程（第5版）》Margininuse

bindingmargin裝訂邊continentalmargin大陸邊緣currentmargin工作電流范圍,電流容限designmargin設(shè)計(jì)余量errormargin誤差容限2024/5/2933《電子信息工程專業(yè)英語教程（第5版）》Margininuse

lowlevelnoisemargin低電平噪聲容限magnitudemargin幅值裕度noisemargin噪聲容限,噪聲安全系數(shù)nominalmargin標(biāo)稱容限peakmargin峰值容限2024/5/2934《電子信息工程專業(yè)英語教程（第5版）》EvaluationindictionaryAprocesstodeterminewhetherornotanitemofhardwareorsoftwarecanperformaparticularrequiredfunctionortodeterminewhichoftwoormoreitemscanperformthefunctionbest.

評(píng)價(jià)；鑒定Aprocesstoreduceanexpressiontoitssimplestformorasinglevalue.

計(jì)算，求值2024/5/2935《電子信息工程專業(yè)英語教程（第5版）》EvaluationintextAsignalsourceisnothinglessthanthecornerstoneofalmostanyinstrumentation

setupusedinhardwaredesign,debug,orevaluation

projects

信號(hào)源是用于硬件設(shè)計(jì)、調(diào)試、評(píng)價(jià)工程中的幾乎任何一種測量配置的基礎(chǔ)。

2024/5/2936《電子信息工程專業(yè)英語教程（第5版）》Evaluationinuse

accomplishmentevaluation學(xué)業(yè)成績評(píng)定hazardevaluation危害評(píng)價(jià)lossevaluation損耗估算evaluationofdeterminants行列式的求值2024/5/2937《電子信息工程專業(yè)英語教程（第5版）》AncillaryindictionarySubordinate:

從屬的Auxiliary;helping:

輔助的；補(bǔ)充的Something,suchasaworkbook,thatissubordinatetosomethingelse,