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Revealing waveform characteristics up to a digitizer's full bandwidth

Posted: 15 Jun 2011     Print Version  Bookmark and Share

Keywords:random interleaved sampling 

One way to enable a higher effective sampling rate is called random interleaved sampling or RIS (pronounced "riss"). This method creates a composite waveform by combining data from many lower-sampling-rate waveforms of the same signal, recorded out of phase with one another. RIS works only with stable repetitive waveforms that can be accurately acquired with a well-defined trigger position for each repeated acquisition.

The oversampling factor will be an integer multiple of the real-time (single-shot) sampling rate.

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