销售/出租二手CMD55综合测试仪游***13528839036CMD55产品特点：·是测量G***及G***1800移动电话的紧缩式单元·通过RS232，IEC/IEEE远控·前面板有多功能连接器·话音编码器/***器可被集成·可选择安培表和伏特表·高敏感度二级RF输入·可改进为G***、G***1800及G***1900测试CharacteristicsTheCMD52isacompactunitfortestingG***900mobiles.TheCMD55isfurthermorecapableoftestingG***1800(formerlynamedPCNorDCS1800)andG***1900(formerlynamedPCSorDCS1900)mobilephones.Bothmodelsaref***ourablypricedandcombine***alldimensi***withhighmeasurementaccuracyandspeed.Thetestersrangeofcapabilitiesincludesallsignalling,generatorandmeasurementfuncti***requiredforverifyingthecorrectoperationoftheDUT(DeviceUnderTest).Thankstoitsfastgo/nogotestsandaccurateanalysisusingoptionalextensi***,CMD52andCMD55areequallywellsuitedforR&D,productionandhigh-endserviceandsedonthewide-rangeknow-howofRohde&Schwarzindigitalradiocommunicationtesting,whichnotleastwasobtainedindevelopingtype-approvaltestsystemssuchastheG***900andG***1800systemsimulators,bothCMDmodelsaretop-gradetestersforpresentandfuturemeasurementapplicati***.TestcapabilitiesTotestmobilephones,theCMDsimulatesaG***900,1800or1900basestation.OneofthetwoRFsynthesizers***ailableforthispurposedeliversacontinuousBCCHsignalwhiletheotheroneprovidesall8timeslotsforTCHsignals.Themajortestfuncti***are:MobilesynchronizationLocationupdateIncomingcallsetupOutgoingcallsetupMobilepowerlevelcontrolHandover(channelchange,timeslotchange)PeakpowermeasurementHighdynamicrangeburstanalyzer(optionCMD-B4andCMD-B42)SpectrumduetoSwitchingmeasurement(optionCMD-B4andCMD–B43)SpectrumduetoModulationmeasurement(optionCMD-B4andCMD–B43TimingAdvancemeasurementSACCHmeasurement(egRxLev,RxQual,powerlevel)EchotestCallclearingbymobilephoneCallclearingbyCMDDCcurrent/voltagemeasurementsPhaseandfrequencyerrormeasurement(optionCMD-B4)Measurementofpowerrampingasafunctionoftime(optionCMD-B4)Bit-errorrate(BER)andFastBERmeasurement(optionCMD-B4)OperationOperationoftheCMDisextremelyuser-friendlyandrequiresnodetailedG***/PCNknowledge.Thehigh-contrast,backlitLCDprovidedwithsoftkeysonbothsidesallowsconvenientcallupoftestroutinesundermenucontrol.Variousnetwork-specificparametersarepresetandpermitdirecttestingwithoutanyoperatorcontrol.Inaddition,itisofcoursepossibletomodifyallparametersindividuallyintheconfigurationmenus.AutotestTheautotestfunctionenablescompletemeasurementroutinestobestartedatakeystrokewithoutanyfurtherinterventionbytheoperatorbeingrequired.ThetestresultsintabularformaredisplayedonthemotecontrolTheCMDisremote-controlledviatheRS-232orIEEE/IEC-businterfaceusingSCPI-compatiblecommands.Intheremote-controlmodetheCMDisdesignedforfastspeedtoyieldhighthroughputsinhotestTheechotestallowsveryrapidgo/nogoanalysiscoveringallessentialpartsofthemobile.Wo***spokenintothemicrophoneofthemobilearesenttotheCMD,storedinbuffermemoryandsentbacktothephone.InthiswayitispossibletocheckthewholesignalpathfromthemicrophoneviatheRFtran***ittersection,RFreceiversection,modulator,demodulator,signallingsection,speechcoder/decoder,analogaudiocomponentsthroughtotheloudspeaker.TestinghandheldsInadditiontothenormalRFinput/output,theCMDhasahigh-sensitivityinputandahigh-leveloutputwhichenabletestsonmodulesoronhandheldswithbuilt-inantennabyusingcouplersliketheCMD-Z10.ModuletestingFaultlocalizationinmobiletelephonesrequiresvariousmeasurementfuncti***thatcanalsobeusedwithoutsignallingsothatdefectiveunitscanbetesteddowntomodularlevel.ThebasicmodelofCMDalreadyprovidessomeofthesefuncti***,egsignalgenerationwithorwithoutmodulationorpowermeasurements,otherfuncti***being***ailableasoptionalextensi***.)