基于时钟相位补偿的同步触发信号产生技术

Technology of Synchronous Trigger Signal Generation Based on Clock Phase Compensation

触发信号时间抖动和延时调节分辨率是同步系统的重要参数,提出一种同步触发信号产生技术,通过测量基准触发信号与系统时钟信号间的相位差,对系统时钟相位进行补偿,减小同步触发信号与基准触发信号间的时间抖动,同时利用计数器结合可编程数字延时方案,提高同步触发信号延时调节分辨率,实现了20通道的同步触发信号输出;实验结果表明,输出的同步触发信号与输入的基准触发信号的时间抖动峰值小于500 ps,延时调节分辨率达到250 ps,满足需要精密时序控制的系统对同步触发信号的要求。

The time jitter and delay resolution of the trigger signal are the keyparameters in synchronization system.The technology of synchronization trigger signal generation is proposed.The phase difference between the reference trigger signal and the system clock signal is measured to compensate the system clock phase,to reduce the time jitter of the synchronous trigger signal.also use the counter combined with programmable digita delay scheme to improve the time delay resolution of trigger signals,finally get 20 channels of synchronous trigger signal output.The experimental results show that the time jitter peak and peak value of the output synchronous trigger signal and the input reference trigger signal are less than 500 picoseconds,and the delay resolution is 250 picoseconds,which meets the requirements of the synchronous trigger signal of the system requiring precse timing control.