R&S CBT 测量方法

1/222/22AgendaBluetooth测试基础知识CBT与DUT建立连接Items测量3/22Bluetooth测试基础知识见附件《Bluetooth测量基础》4/22CBT与DUT建立连接MS测试准备：用PC机通过AT命令控制MS(ADI)进入TEST模式：PC机与MS建立连接：AT读取Bluetooth地址：AT+BBDADDR?MS进入Bluetooth测试模式：AT+BDUT5/22CBT与DUT建立连接CBT与MS建立连接Inquire获取蓝牙地址Connect建立连接6/22Items测量准备设置Loss值：操作：ConnectControl→AF/RF分别设置2个Loss值，Enter确定7/22Items测量TransmittertestsPowerICFTCarrierfrequencyDriftModulationCharacteristicsSpectrummeasureReceivertestsBER/PER8/22PowerPowerspec:AveragePower0dBmPav+20dBm(Powerclass1)-6dBnPav+4dBm(Powerclass2)Pav0dBm(Powerclass3)PeakPowerPpk+23dBm9/22OutputPower操作:Menu→Power10/22PowerControlMS必须支持PowerControl查看“signallingInfo”PowerControl模式必须enabled11/22PowerControl12/22ICFT(Freq.Accuracy)操作：测试项目选择：Menu→Modulation测试模式设置：slavesig1→TestmodeType→LoopbackTests数据包选择：ConnectControl→SlavSig.→DH1Spec:+/-75KHzdifferencetonominalcarrierfrequency13/22Carrierfrequencydrift操作测试项目选择：Menu→Modulation测试模式设置：slavesig1→TestmodeType→LoopbackTests数据包选择：ConnectControl→SlavSig.DH？分别在DH1、DH3、DH5测试Spec:+/-25KHz(DH1)+/-40KHz(DH3/DH5)14/22ICFT&Carrierfrequencydrift15/22ModulationCharacteristics测试项目：Deltaf1avg&Deltaf2avgDeltaf1avg/Deltaf2avgDeltaf2maxDeltaf2max(BitsAboveTreshol)16/22ModulationCharacteristics操作：测试项目选择：Menu→Modulation测试模式设置：slavesig1→TestmodeType→LoopbackTests实体资料选择：PatternType→00001111（f1）10101010(f2)17/22ModulationCharacteristicsspec:140kHz≤△f1avg≤175kHz△f1avg/△f2avg≥0.8△f2max≥115kHzDeltaf2max(BitsAboveThreshol)≥99.9%18/22ModulationCharacteristics19/22Spectrummeasure操作：Menu→Bandwidth-20dBm频宽测量：使用2MHz的频距来量测，然后检查高于和低于该峰值两侧下降20dBm的频率点。Spec:∣FH-FL∣≤1.0MHZ20/22Spectrummeasure（-20dBm）21/22BER/PER操作：Menu→ReceiverQuality22/22