现金收购/销售/CMD55手机综合测试仪,肖小姐：13728736358深圳市欣诺特电子仪器有限公司地址：深圳市宝安区龙华镇民治碧水龙庭6栋TEL：0755-29737880FAX：0755-29738815联系人：肖小姐手机：13728736358***：1635851451E-mail:xnt888@CMD55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-endserviceandproduction.Basedonthewide-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.Thetestresultsintabularformaredisplayedonthescreen.RemotecontrolTheCMDisremote-controlledviatheRS-232orIEEE/IEC-businterfaceusingSCPI-compatiblecommands.Intheremote-controlmodetheCMDisdesignedforfastspeedtoyieldhighthroughputsinproduction.EchotestTheechotestallowsveryrapidgo/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***.现金收购二手频谱分析仪,网络分析仪,无线电综合测试仪,电子负载,示波器,音频分析仪,信号发生器,美国NIGPIB卡,安捷伦GPIB卡等!)