摘要
提出了使用正弦波激励评价触发延迟线性度和触发抖动的新方法,通过一个波形在有触发延迟和无触发延迟时,采集序列间的相位差对应的时间差来最终判定触发延迟结果。用该方法实现的触发延迟线性度测量方法,将触发延迟直接溯源到激励信号的频率量上,无需额外的精密延时器等装置,减少了测量环节,并且可以实现任意延迟的精确测量。以不同频率、不同触发延迟、不同采集速率下的实验结果的对比给出了触发延迟线性校准的结论性意见,同时验证了所述方法的有效性和切实可行性。
In this paper, the evaluation method for both linearity and jitter of trigger delay of waveforrn recorders are presented. By using the sampling series phase difference between the trigger delay and no trigger delay, one can obtain both the trigger delay and trigger jitter results, and the linearity of trigger delay. This method can take the trigger delay tracing to the frequency of sinusoidal without any other time delayer and realizing any trigger delay measurement. By experiment, different sampling rates, and different triggering frequencies in trigger delay measurement are compared in detailed. The feasibility and validity are proved.
出处
《计测技术》
2009年第5期4-7,共4页
Metrology & Measurement Technology
关键词
触发延迟线性
触发抖动
校准
评价
数字存储示波器
计量学
linearity of trigger delay
trigger jitter
calibration
evaluation
digital storage oscilloscope
metrology
