蓝牙测试方案课件.pptVIP

蓝牙测试方案 ;蓝牙的信道分配与调制方式;蓝牙产品的测试架构;MT8852B与蓝牙测试;蓝牙射频测量规范;蓝牙测量规范 V1.2规定的RF测试项;V2.0/V2.1规范中EDR的测试项;MT8852B 支持8项 V1.2 测试项;MT8852B与 EDR测试;Testing Items in Script—Output Power;Testing Items in Script—Power Control;Testing Items in Script—Modulation Index;Testing Items in Script—Initial Carrier;Testing Items in Script—Carrier Drift;Testing Items in Script—Sensitivity (single slot); -70dBm, BER0.1%;Testing Items in Script—Max Input Power;EDR Relative Transmit Power;; for checking the frequency stability of EDR transmitter Hopping Off ωi = Initial freq error of the Packet header Limit：± 75 kHz ω0 = freq error of 50μs packet in the payload At least 200 packets be measured Error Limit：± 10 kHz The sum of ωi andω0 = ± 75 kHz ;For checking the modulation accuracy of EDR ttansmitter Hoping Off At least 200 x 50μs payload be measured for every carrier RMS DEVM(50us) should meet the following： RMS DEVM 20%, Peak DEVM 35% for 2Mbps payload RMS DEVM 13%,Peak DEVM 25% for 3Mbps payload 99% of all symbols 30% DEVM for 2Mbps payload 99% of all symbols 20% DEVM for 3Mbps payload;EDR Differential Phase Encoding;EDR BER Floor ;EDR RX Sensitivity;EDR Maximum input Level ;测试过程;关于测试模式与测试架构;MT8852B 蓝牙测试仪;BlueTest2自动测量软件;选择脚本(Script)定制测试项;执行测试;BlueTest2可产生详细的报告;HeadSet and Handfree profile emulator耳机仿真软件;对于音质要求很高的DUT可用该软件进行测试;语音可以单向或环回测试;蓝牙产品一般需要经过两个层级的测试;MT8852A/B;Thank you!