A hardware structure of a time synchronous device based on GPS is introduced, its working principle of this device is discussed, at the smae time its practical application is also introduced.
介绍了一种基于GPS的时间同步装置的硬件结构，论述了这种装置的工作原理，同时也介绍了它的实际应用。
Mode of serial port pair: synchronous clock device through the serial port read per second pair a serial output time information, serial port and RS232 interface and RS422 interface.
串行口对时方式：装置通过串行口读取同步时钟每秒一次的串行输出的时间信息对时，串行口又分为rs232接口和RS422接口方式。
This thesis selects model GN-80 GPS receiver and SCM to design the sampling device. The high accurate time service is used to synchronize the sample clock signal to realize synchronous sampling.
选用GN-80型GPS接收设备和单片微机进行电力系统状态变量同步采集终端的硬件设计，利用GPS的精确授时作为其同步时钟控制采样脉冲来实现同步采样。
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