BASIC MEASUREMENT
29
Crest Factor Table
Background
Crest factor is the ratio of the peak signal amplitude to the
RMS value of the signal. It determines the accuracy of AC
measurement.
If the crest factor is less than 3.0, voltage measurement will
not result in error due to dynamic range limitations at full
scale.
If the crest factor is more than 3.0, it usually indicates an
abnormal waveform as seen from the below table.
Waveform Shape Crest factor
Square wave
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