脉冲信号源脉宽参数的测量不确定度分析

Measurement Uncertainty of Pulse Width of Pulse Generator

对脉冲信号源脉宽指标进行了不确定度的分析和评定。分析了脉冲信号源脉宽测量时的主要误差来源,包括计数器测量重复性、触发定时误差、时基误差、放大器滞后误差、分辨力误差等;结合这些影响因素,评估了脉宽测量的合成标准不确定度和扩展不确定度。

In this paper, the uncertainty of evaluation results of pulse width of pulse generator is described. The main error sources of pulse width measurement, including counter＇s repeatability, trigger level timing error, time base error, the amplifier hysteresis error, LSD displayed error, etc. are analyzed. According to these effect factors, the combined standard uncertainty and expanded uncertainty of pulse width measurement are evaluated.