一种眼图仪本底噪声的测量方法

A method for measuring the noise floor of eye diagram analyzer

柱状图分析法用于时间抖动参数测量,也可用于数字电路故障诊断。本文提出一种利用柱状图分析功能测量眼图仪本底噪声的方法,首先介绍眼图仪的柱状图分析法,接着设计实验,分析不同带宽、速率滤波器、终端负载对测量结果的影响,最后对眼图仪本底噪声测量结果的不确定度进行分析。实验结果表明,柱状图分析法测量眼图仪本底噪声的一致性、重复性较好。

The histogram analytical method was used for timing jitter measurement and fault diagnosis for digital circuits.The histogram analytical method for measuring the noise floorof eye diagram analyzer has been introduced and established,experiments have been designed to verify how the bandwidth filter,data rate filter and terminal load influence the test result.The uncertainty of the test result has been discussed and analyzed.The experimental result shows that the histogram analytical method for measuring the noise floor of eye diagram analyzer have good consistency and repeatability.