摘要
本文根据TD专网电力测试系统的无线传输解决方案对时钟系统的要求,重点对时钟同步系统进行了研究。文中运用时钟锁相环技术,对时钟锁定精度和时钟保持指标进行了研究与分析。通过实现结果表明,该时钟系统输出的时钟同步精度为200 ns的时钟信号及200 ns的时间保持指标,完全优于电力测试系统提出的指标要求,有效提高了电力测试系统的测试精确度。
According to the requirements of clock synchronization in the solution of the wireless transmission which based on TD-SCDMA power intelligent testing system network, the clock synchronization system is researched em-phatically in this paper. The precision of clock lock and the holding index of time is researched and analysed in the pa-per by using Phase-locked loops technology. AS the implementation results shows that both of the time synchronization accuracy and the time holding index is two hundreds nanosecond, which is superior to the requirement of the power testing system. It improves the testing accuracy of the power testing system efficiently.
