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。
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。
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.
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