oversample & upsample

oversample过采样，采样频率远大于那奎斯特频率

upsample提高采样频率，内插

 

 

 

Each channel over samples the required input signals, and uses several stages of digital filtering and decimation to reduce the over sampled data down to the required user sampling rate .

每个通道都对被测量进行超采样，多级数字滤波之后（有规律地）舍弃某些超采样点，使得最终（出现在系统数字底板上的）采样频率与用户所设定的采样频率相一致。