流媒体平台及编码

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1、汽车专业英语Unit7DiagnosticScanToolandOscilloscope第七单元故障诊断仪和示波器7-1DiagnosticScanTool(#1)故障诊断仪KingtecDiagnosticSystem金德故障诊断仪，金德故障诊断系统Tech2=Tech2ScanTool#1diagnostictesterTECH2故障诊断仪TouchPanelTypeTester触摸屏式故障诊断仪，触摸屏式测试仪VAS5051=Vehiclediagnostic,testingandinformationsystem5051（大众公司）5051型车辆诊断、测

2、试和信息装置WhatIsHand-heldTester?TheDTCsthatarestoredintheECUcanbedisplayedonahandheldtesterbyestablishingcommunicationdirectlywiththeECU.Inaddition,thehand-heldtestercancleartheDTCsfromtheECU’smemory.Thehand-heldtesterprovidesotherfunctionssuchasdisplayingtheinformationdatabycommunicatin

3、gwiththeECUbyvarioussensors,orservingasavoltmeteroranoscilloscope.7-2Tech2ScanToolTech2故障诊断仪(#1)①softkey软键②selectkey选择键③actionkey作用键④functionkey功能键YES是，可以ENTER进入，键入EXIT退出NO不SHIFT转换PWR=power电源WhatIsDiagnosis?Theon-boarddiagnosticsystemisthevehicle’sself-diagnosisfunctionthatisprovide

4、dbytheECU(ElectronicControlUnit).Uponreceivingthesignalsfromthesensorsthatdetecttheconditionsofthevehicle,theECUtransmitssignalstotheactuatorsoptimallyforthecurrentconditions.TheECUreceivessignalsfromthesensorsintheformofvoltage.TheECUcandeterminetheconditionsofthesystembydetectingth

5、echangesinthevoltageofthesignalsthatareoutputbythesensors.Thus,theECUconstantlymonitorstheinputsignals(voltage),comparesthemtothestandardvaluesthatarestoredintheECU’smemory,anddeterminesanyabnormalconditions.Thegraphontheleftshowsthecharacteristicsofawatertemperaturesensor.Normally,t

6、hevoltageofthewatertemperaturesensorshouldvarybetween0.1Vand4.8V,ifavoltagewithinthisrangeisinput,theECUdeterminesthattheconditionisnormal.Ifitisashortcircuit(theinputvoltageislessthan0.1V)oranopencircuit(theinputvoltageismorethan4.8V),theECUdeterminesthatitisabnormal.IftheECUdetermi

7、nestheinputsignaltobeabnormal,theECUilluminatestheMIL(MalfunctionIndicatorLight)toalertthedriverandstoresaDTC(DiagnosticTroubleCode)initsmemory.7-3TouchPanelTypeTesterOperation触摸屏式故障诊断仪操作一.设定菜单SETUPMENU（#1）1、CLOCK/CALENDAR2、PRINTERBAUD3、PRINTERSELECT4、UNITCONVERSION5、BRANDSELECT6、DAT

8、ABASESELECT7