
Using digital storage oscilloscopes
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implementation is more efficient in terms of bandwidth than a
simple moving average type of filter. The reduction in bandwidth
will be of no significance if the wanted signal contains no
components outside the filter bandwidth. If the signal of interest is
strictly repetitive, e.g. a pure sinewave or jitter-free squarewave, it
can usefully be acquired in equivalent time mode, using random
interleaved sampling (RIS). By making the sample interval At very
short compared to the period ...