《电子信息专业英语》（第3版） 课件Chapter 5 Electronics Products 电子产品

活页式教材微课版电子信息专业英语行业PPT模板/hangye/

Chapter5ElectronicsProducts电子产品

教学目标5.1★电视机：掌握电视信号发射和接收、电视机组成、显像管、图像处理和声音处理、电视机控制调节。★通过电视机、GPS汽车导航定位系统、产品说明书三篇文章学习电子产品。5.2★汽车导航定位系统：掌握GPS卫星网、GPS工作原理、车载GPS接收机功能及使用。5.3★产品说明书：掌握产品说明书的封面与目录、保修、产品概述和主要功能、操作步骤、技术规格、维修保养、技术支持。

5.1

Lesson13Television

电视机NewWordsTechnicalTerms技术词汇accompanyingadj.附随的；陪伴的；televisionchannel电视频道allottedadj.分配的receivingend接收端interceptvt.拦截；截断n.拦截radiatevt.传播；辐射；发射tunern.调谐器frequencyband频带intermediatefrequency中频IF中频degreen.程度，等级；度；学位cathoderaytube阴极射线管envelopen.信封；外壳；包络electron-gun电子枪beamn.束；光束；电波fluorescentscreen荧光屏deflectvt.使偏转；使转向TechnicalTerms技术词汇deflectingcoil偏转线圈mountvt.安装；爬上；vi.爬；上升illuminatevt.照亮；阐明，说明detectorn.检测器；检波器feedvt.喂养；供给；馈送chroman.（色彩的）浓度，色度primarycolour基色sufficientadj.足够的；充分的frontpanel前面板channelselector频道选择器finetuning微调brightnessn.亮度；鲜艳contrastn.对比；对比度volumecontrol音量控制，音量调节tonecontrol音调控制，音调调节optimumadj.最适宜的；n.最佳效果saturationn.饱和；色饱和度

5.1

Lesson13Television

电视机Television(

TV

)isatelecommunicationmediumfortransmittingandreceivingmovingimageswithaccompanyingsound.ThepicturesignalisgeneratedbyaTVcameraandsoundsignalbyamicrophone.Thepicturesignalisamplitudemodulatedandsoundsignalfrequencymodulatedbeforetransmission.Inradiocommunication,eachtelevisionchannelisallotteddifferentcarrierfrequenciestoenableselectionofdesiredchannelatthereceivingend.AsimplifiedblockdiagramofablackandwhiteTVreceiverisshowninFig.5-1.ThereceivingantennainterceptsradiatedRFsignalsandthetunerselectsdesiredchannel’sfrequencybandandconvertsittothecommonIFbandoffrequencies.Thereceiveremploystwoorthreestagesofintermediatefrequency(

IF

)amplifiers.TheoutputfromthelastIFstageisdemodulatedtorecoverthevideosignal.Thissignalthatcarriespictureinformationisamplifiedandcoupledtothepicturetubewhichconvertstheelectricalsignalbackintopictureelementsofthesamedegreeofblackandwhite.Thefrequencymodulatedaudiosignalisdemodulatedafteratleastonestageofamplification.TheaudiooutputfromtheFMdetectorisgivendueamplificationbeforefeedingittotheloudspeaker.Text

5.1

Lesson13Television

电视机ThepicturetubeshowninFig.5-2isverysimilartothecathoderaytubeusedinanoscilloscope.Insidethetubeisavacuum.Theelectronbeamemittedbytheheatedcathodeattherearendofthetubeisacceleratedandfocusedbyoneormoreanodes,andstrikesthefrontofthetube,producingabrightspotonthephosphorescentscreen.Thebeamisdeflectedbyapairofdeflectingcoilsmountedontheneckofpicturetube.Theamplitudesofcurrentsinthehorizontalandverticaldeflectingcoilsaresoadjustedthattheentirescreengetsilluminated.Liquid-crystal-displaytelevisions(LCDTV)aretelevisionsetsthatuseliquid-crystaldisplaystoproduceimages.LCDtelevisionsarethinnerandlighterthancathoderaytube(CRT)ofsimilardisplaysize.Insteadoffiringelectronsataglassscreen,anLCDhasbacklightthatprovideslighttoindividualpixelsarrangedinarectangulargrid.Acolourreceiverissimilartotheblackandwhitereceiver.Themaindifferencebetweenthetwoistheneedofacolourorchromasubsystem.Thered,green,andbluethreeprimarycoloursignalsarefedaftersufficientamplificationtothecolourpicturetubetoproduceacolourpictureonitsscreen.Text

5.1

Lesson13Television

电视机MostblackandwhitereceivershaveON-OFFswitch，channelselector，brightness,contrast,volumecontrolsontheirfrontpanel.Somereceiversalsoprovideatonecontrol.Thechannelselectorswitchisusedforselectingthedesiredchannel.Thebrightnesscontrolvariesbeamintensityofthepicturetubeandissetforoptimumaveragebrightnessofthepicture.Thecontrastcontrolisactuallygaincontrolofthevideoamplifier.Thiscanbevariedtoobtaindesiredcontrastbetweenwhiteandblackcontentsofthereproducedpicture.Thevolumeandtonecontrolsformpartoftheaudioamplifierinsoundsection,andareusedforsettingvolumeandtonalqualityofthesoundoutputfromtheloudspeaker.Incolourreceiversthereisanadditionalcontrolcalled‘colour’or‘saturation’control.Itisusedtovaryintensityoramountofcoloursinthereproducedpicture.Atelevisionremotecontrolunitiscommonlyusedforoperatingthetelevisionreceivervarioussettingswirelesslyfromashortdistance.Text

5.1

Lesson13Television

电视机Figures

7Figure5-1BlockdiagramofablackandwhiteTVreceiverFigure5-2Picturetube

5.1

Lesson13Television

电视机Ⅰ．Choosethebesttechnicaltermtocompletethefollowingstatements.ExercisesTelevisionsoundsignalisgeneratedbya().A.TVcamera

B.microphone C.TVreceiver D.FMdetectorThe()twocarrierfrequenciesaresuitablyspacedandtheirmodulationproductsradiatedthroughacommonantenna.A.transmittingandreceiving B.TVcameraandmicrophoneC.picturesignalandsoundsignal D.blackandwhiteTVreceiver()selectsdesiredchannel’sradiofrequencybandandconvertsittothecommonintermediatefrequencyband.A.receivingantenna

B.tuner C.demodulator D.coupler()strikesthefrontofthetube,producingabrightspotonthephosphorescentscreen.A.electronbeam

B.heatedcathode

C.anode D.deflectingcoil

5.1

Lesson13Television

电视机Ⅰ．Choosethebesttechnicaltermtocompletethefollowingstatements.ExercisesAfterbeingamplified,()isfedtotheloudspeaker.A.modulatedfrequencysignal B.demodulator C.audiosignal D.FMdetectorIncolourreceiverthereisanadditional()unit.Itisusedtoproduceacolourpictureonitsscreen.A.colour

B.chroma C.primarycoloursignal D.sufficientamplifierMostcolourreceivershaveON-OFFswitch，channelselector，brightness,contrast,(),volumecontrolsontheirfrontpanelunit.A.coloursaturation B.stereoeffect C.widescreen D.remotecontrol

5.1

Lesson13Television

电视机Ⅱ．TranslatethefollowingsentencesintoChinese.Exercises1．Theelectronbeamdisplaysanimageonthescreen.Theimagemayrepresentelectricalwaveforms(

oscilloscope

),pictures(

television,computermonitor

),echoesofaircraftdetectedbyradar,andsoforth.2．CathodeRayTubeislarge,deep,heavy,andrelativelyfragile.TheCRTsarelargelydisplacedbyflatplasmascreens,liquidcrystaldisplays,andothertechnologies.3．Cabletelevisionisasystemofprovidingtelevisionprogramstoconsumersviaradiofrequency(

RF

)signalsordigitalpulsestransmittedtotelevisionsthroughcoaxialcablesoropticalfibers.FMradioprogramming,high-speedInternet,andtelephonymayalsobeprovided.4．Aset-topboxisadevicethatenablesatelevisionsettoreceiveanddecodedigitaltelevision(

DTV

)broadcasts.Aset-topboxisnecessarytotelevisionviewerswhowishtousetheircurrentanalogtelevisionsetstoreceivedigitalbroadcasts.

5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统NewWordsTechnicalTerms技术词汇GlobalPositioningSystem全球定位系统satellite-based星载的navigationn.航行circlev.旋转；环行；n.圆；周期orbitn.轨道；vt.绕轨道而行triangulationn.三角形测量essentiallyadv.本质上latituden.纬度longituden.经度altituden.高度pinpointvt.查明；精确找到；n.针尖globen.地球；球体；v.成球状yardn.院子；码（1码=3英尺）installvt.安装TechnicalTerms技术词汇auton.汽车（等于automobile）；自动add-onn.追加硬件设备accessoryn.配件；附件interactiveadj.交互式的；相互作用的on-boardadj.在车上的；在船上的plotvt.绘图；标绘n.情节；图destinationn.目的地，终点accountfor对…负有责任；说明…的原因congestionn.拥挤；拥塞turnv.转向；使旋转；转弯；n.转弯correctvt.改正；adj.正确的visualadj.视觉的，视力的gasstation加油站5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统TheGlobalPositioningSystem(GPS)isasatellite-basednavigationsystemmadeupofanetworkof24satellites(Fig.5-9).GPSsatellitescircletheearthtwiceadayinaverypreciseorbitandtransmitsignalinformationtoearth.GPSreceiverstakethisinformationandusetriangulationtocalculatetheuser’sexactlocation.Essentially,theGPSreceivercomparesthetimeasignalwastransmittedbyasatellitewiththetimeitwasreceived.ThetimedifferencetellstheGPSreceiverhowfarawaythesatelliteis.Now,withdistancemeasurementsfromafewmoresatellites,thereceivercandeterminetheuser’spositionanddisplayitontheunit’selectronicmap.AGPSreceivermustbelockedontothesignalofatleastthreesatellitestocalculatea2Dposition(latitudeandlongitude)andtrackmovement(Fig.5-10).Withfourormoresatellitesinview,thereceivercandeterminetheuser’s3Dposition(latitude,longitudeandaltitude).TheGlobalPositioningSystem(GPS)isaspaceagenavigationalsystemthatcanpinpointyourpositionanywhereontheglobe,usuallywithinafewyardsormeters.Thisamazingtechnologyisavailabletoeveryone,everywhere,dayandnight,andbestofall,atnocostforuseofthenavigationaldata.Text5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统BeidouNavigationSatelliteSystem（BDS）isaChinesesatellitenavigationsystemandisnotmuchdifferenttoGPS.MobiledeviceshavebeenequippedwiththeGPSandBDStechnologytoincreaseaccuracyandreliability.Vehiclenavigationsystemcanbefactory-installedonnewautosorpurchasedasanadd-onaccessory.Combiningtheuseofsignalsfromthesatelliteswithinteractiveon-boardmaps,Vehiclenavigationsystemscanplotroutesoftraveltoagivendestinationbasedonanumberofvariables(Fig.5-11).Somevehiclenavigationsystemsareinterconnectedwithsourcesoftrafficinformation,enablingthemtoautomaticallyaccountforconstructionandcongestionwhendeterminingthebestroute.Ifadrivermissesaturn,navigationsystemscanquicklycorrectfortheerrorwithanupdatedrouting.Providingvoiceorvisualinstructions,theseunitsalsocanhelpdriversfindthenearestgasstationortheirfavoriterestaurant.Text5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统Figures

Figure5-9Networkof24satellitesFigure5-11GPScarnavigationsystemFigure5-10GPSreceiversreceivesignal5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统Ⅰ．Decidewhetherthefollowingstatementistrueorfalse,andexplainyouranswers.Exercises1．The24satellitesintheGlobalPositioningSystem(

GPS

)aresynchronoussatellites,andtheyappeartobestationarytoanobserverontheearth.2．GPSsatellitessendsignalinformation,suchastime,positionofsatellite,positionofreceiver,andtrafficconditionontheearth.3．GPSreceiverstaketheinformationtransmittedfromallthe24satellitesandcalculatetheuser’sexactlocation.4．GPSreceiverscanprovidelatitudeandlongitudeinformation.5．GlobalPositioningSystemcanprovidehighaccuracy(

centimeterlevel

)navigationundergoodweatherconditions.6．GPScarnavigationsprovidesuggestedroadstoahumaninchargeofavehicleviapictureorsound.5.2 Lesson14VehicleNavigationSystem

汽车导航定位系统Ⅱ．TranslatethefollowingsentencesintoChinese.Exercises1．The24GPSsatellitesareorbitingtheearthabout12,000milesaboveus.Thesesatellitesaretravelingatspeedsofroughly7,000milesanhour.2．GPSsatellitesignalscanpassthroughclouds,glassandplasticbutcannotgothroughmostsolidobjectssuchasbuildingsandmountains.3．Radiowavesareelectromagneticenergy,whichmeanstheytravelatthespeedoflight(

300,000kmpersecondinavacuum

).Thereceivercanfigureouthowfarthesignalhastraveledbytiminghowlongittookthesignaltoarrive.4．DifferentialGPS(

DGPS

)helpscorrectsomeerrors.ThestationwithaknownlocationbroadcastsaradiosignaltoallDGPS-equippedreceiversinthearea,providingsignalcorrectioninformationforthatarea.

5.3

Lesson15ProductManual

产品说明书NewWordsTechnicalTerms技术词汇instructionn.用法说明；指令manualn.手册，指南；adj.手工的DCPowerSupply直流电源tableofcontents目录warrantyn.担保；保证；授权maintenancen.维护，维修；保持limitedadj.有限的befreefrom免受，免于；不受…影响的defectn.缺点，缺陷；不足之处workmanshipn.手艺，工艺shipmentn.出货；装货；装载的货物optionn.选择权；选项deemvt.认为，视作；相信defectiveadj.有缺陷的；不完美的covervt.包括；涉及n.盖子；封面abusen.滥用；虐待；vt.滥用improperadj.不正确的，不适当的TechnicalTerms技术词汇regulatevt.调节；控制；校准constantvoltage恒定电压constantcurrent恒定电流paneln.仪表板indicatorn.指示器lightn.光，灯adj.轻的vi.点亮coarseadj.粗糙的adjustmentn.调整，调节fineadj.好的；细小的n.罚款terminaln.终点；末端；adj.末端的polarityn.两极；极性chassisn.机架；底盘，底架rearadv.在后面；向后holdern.支架；固定器cordn.绳索；vt.用绳子捆绑linevoltage线路电压masteradj.主要的；n.主人

5.3

Lesson15ProductManual

产品说明书NewWordsTechnicalTerms技术词汇slaveadj.从属的；n.奴隶outletn.出口；电源插座clockwiseadv.顺时针方向地adj.顺时针方向的postn.柱；标杆；岗位；vt.布置；张贴overloadvt.超载，超过负荷；n.超载TechnicalTerms技术词汇dimensionn.尺寸；vt.标出尺寸maintenancen.维护，维修shockn.震惊；休克；vt.使受电击blown.吹；弄坏；打击；vi.风吹toll-freeadj.不用付电话费的5.3 Lesson15ProductManual

产品说明书ProductManualforthePASCODCPowerSupply.TableofContents

Section

PageWarranty1Introduction2Operation3EquipmentSpecifications4Maintenance6TechnicalSupport7LimitedWarranty

PASCOwarrantstheproducttobefreefromdefectsinmaterialsandworkmanshipforaperiodofoneyearfromthedateofshipmenttothecustomer.PASCOwillrepairorreplace,atitsoption,anypartoftheproductwhichisdeemedtobedefectiveinmaterialorworkmanship.Thewarrantydoesnotcoverdamagetotheproductcausedbyabuseorimproperuse.Text5.3 Lesson15ProductManual

产品说明书IntroductionThePASCOscientificModelSF-9584ADCPowerSupplyprovidesaregulatedDCoutput.TheDCoutputcanbedeliveredintwomodes:constantvoltagemodeandconstantcurrentmode.FrontPanelCVindicator lightswhenthepowerturnonandconstantvoltageoperation[6].CCindicator lightswhenthisunitinconstantcurrentoperation.Voltagecoarse forthecoarseadjustmentoftheoutputvoltage.Voltagefine forthefineadjustmentoftheoutputvoltage.Currentcoarse forthecoarseadjustmentoftheoutputcurrent.Currentfine forthefineadjustmentoftheoutputcurrent.‘+’terminal positivepolarity(

Red

).‘GND’terminal earthandchassisground(

Green

).‘－’terminal negativepolarity(

Green

).Digitalmeter indicatestheoutputvoltage(

Digitaltype

).Analogmeter indicatestheoutputvoltage(

Analogtype

).A/Vselect selectsthemeterindicatesoftheoutputvoltageorcurrent.Powercontrol on/offswitchHI/LOcontrol currentindicatesHI/LOrangeselects.Text5.3 Lesson15ProductManual

产品说明书RearPanelFuseholderPowercordACselects Withswitch,selectsthelinevoltageattherightpositionof120Vor240Vandattheleftpositionoftherange100Vor220V.ACselects Selectsthelinevoltageisinthe100V-120Vrange(

leftposition

) orisinthe220V-240Vrange(

rightposition

).Master-Slave SelectsforMaster(

internalcontrol

)orSlave(

externalremotecontrol

)operation.Input-Output Input/OutputconnectorOperatingInstructions

A．Plugpowercordintothepoweroutlet.B．SetthepowerON/OFFswitchto‘ON’position.Theswitchwilllighttoshowthatthepowersupplyison.C．ConstantVoltageMode:TurntheDCCURRENTADJUSTknobfullyclockwise[.ThenadjusttheDCVOLTAGEADJUSTknobtoobtainthedesiredoutputvoltage,asindicatedonthemeter.Theoutputcurrentisdisplayedonthecurrentmeter.D．ConstantCurrentMode:TurntheDCVOLTAGEADJUSTknobfullyclockwise.AdjusttheDCCURRENTADJUSTknobtoobtainthedesiredoutputcurrent,asindicatedonthemeter.Theoutputvoltageisdisplayedonthevoltagemeter.Text5.3 Lesson15ProductManual

产品说明书E．Connecttheexternalloadtotheoutputposts.Makesureboth‘+’and‘-’terminalsareconnectedcorrectly.

MainSpecificationsOutputs:regulatedforbothconstant-voltageandconstant-currentoperation.Bothcurrentandvoltagecontinuouslyvariableovertherange0-24VDCand0-10amperesmaximum.LineRegulation:Lessthan1%changeinDCoutputvoltageorcurrentforfullrangechangeinlinevoltage. LoadRegulations: Betterthan1%no-loadtofull-loadontheDCoutputvoltageorcurrent.RippleandNoise: Lessthan2mVpponDCoutput.PowerInput: AC100,120,220,240V±10%,50/60Hz OverloadandreversepolarityprotectedDimensions: Size:29×13×15cm,Weight:5.5kg.MaintenanceWarning:Thefollowinginstructionsareforusebyqualifiedpersonnelonly.Toavoidelectricalshock,donotperformanyservicingotherthancontainedintheoperatinginstructionsunlessyouarequalifiedtodoso.FuseReplacement:Ifthefuseblows,theCVorCCindicatorswillnotlightandthepowersupplywillnotoperate.Thefuseshouldnotnormallyopenunlessaproblemhasdevelopedintheunit.Trytodetermineandcorrectthecauseoftheblownfuse,thenreplaceonlywithafuseofthecorrectratingandtype.Text5.3 Lesson15ProductManual

产品说明书

TechnicalSupportToReachPASCOFortechnicalsupport,callusat1-800-772-8700(toll-freewithintheU.S.)or(916)786-3800fax:(916)786-3292e-mail:techsupp@PASCO.comweb:Text5.3 Lesson15ProductManual

产品说明书Figures

FrontPanel

RearPanel

5.3 Lesson15ProductManual

产品说明书Ⅰ．Choosethebesttechnicaltermtocompletethefollowingstatements.Exercises1．TheDCPowerSupplyProductManualincludesintroduction,panelcontrolsandindicators,(),mainspecifications,maintenance,warrantyandtechnicalSupport.A．tableofcontents B．safetysummary C．operatinginstructions D．replaceableparts2．TheDCPowerSupplyProductwarrantymaylastaperiodofoneyearfromthedateof().Anypartoftheproductwhichisdeemedtobedefectiveinmaterialorworkmanshipwillberepairedorreplaced.A．purchasing

B．shipping C．receiving

D．using3．PASCOscientificPowerSupplyprovides()output.A．constantDCvoltage B．cons