一款简单实用的labview 处理波形平均频谱的vi，其中20 是指波形峰值在平均值20 范围内的视为有效波形-A simple and practical LabVIEW processing waveform average spectrum of VI, where 20 means the wave peak value in the average range of 20 as effective waveform

一款简单实用的labview 处理读取四通道波形的文件，源文件格式为力科示波器格式-File for a simple and practical LabVIEW read the four channel waveform, the source file format as the format of the oscilloscope