一种带秒准时沿的串口时间发送技术

A Serial Port Time Sending Technology with Second Punctuality Edge

介绍了一种带秒准时沿的串口时间发送的技术实现。该技术应用于时间同步装置中,装置在发送串口时间报文时,串口时间报文的帧头起始位的下降沿为携带的秒准时沿。经验证,时间同步装置的串口时间报文帧头的起始位下降沿与该装置输出的秒信号准时沿同沿输出,时差小于30 ns,其帧头起始位的下降沿可作为该帧时间报文的秒准时沿用。

This paper introduces a technical implementation of serial time sending with second punctuality edge.This technology is applied to a time synchronization device.When the device sends a serial time message,the falling edge of the starting bit of the frame header of the serial time message is the carried second on time edge.It has been verified that the falling edge of the starting bit of the frame header of the serial time message of the time synchronization device is output on the same edge as the punctual edge of the second signal output by the device,and the time difference is less than 30 ns.The falling edge of the starting bit of the frame header can be used as the frame time message.