基于网络化测试系统时间同步协议确定

根据不同任务的需求，测试系统已经更多的开始关注系统之间的数据共享。IEEE提出了一种把与同步相关的时间信息封装在数据报文中的技术，使组网连接简化，从而有效地解决了测试系统实时性问题。讨论了IEEEl588精密时间同步协议的工作原理和它与传统测试系统同步方式的不同，以及在测试系统网络化的前提下，采用这一同步协议解决网络化测试系统时间不确定性的问题。

Determination of Time Synchronization Protocol of Web-based Test System

According to the mission requirements, in the context that test object has large amount of information, the test system starts to pay more and more attention to data sharing between systems. A new technology is proposed in IEEE1588. The timing information relative with synchronization is packaged in the data messages. So the problem of real-time in distributed system is solved. This paper discusses the operating principle of IEEE1588 precision time synchronization protocol and the difference of synchronization mode between web-based test system and conventional test system, and under the premise of web-based test system, we can use this protocol to solve the problem of time uncertainty in the web-based test system.