问题：
Specs: What is Crest Factor?
答案：
Question - What is crest factor?
Answer - Crest factor is the ratio of the peak value to the RMS value. Thus, crest factor specifies the dynamic range of a true RMS instrument.
- For sinusoidal waveforms, the crest factor is 1.414.
- For a symmetrical square wave the crest factor is unity.
- The crest factor of a rectangular pulse is related to its duty cycle; as the duty cycle decreases the crest factor increases.
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