Transient and waveform capture are both triggered by changes in voltage or current, and both record a time series of raw data samples. However, they are used for different purposes, and capture different types of events.
Transient capture in the Revolution is essential if impulsive, high-voltage events must be recorded and accurately measured. Although waveform capture data can indicate a possible transient problem, high-speed sampling is needed to see the true voltage peak.
On the other hand, waveform capture samples at a rate more suitable for the much more common, wide variety of disturbances found at a slower, but still sub-cycle timescale.
Insulation breakdown, ringing, notching, and other events have characteristic waveform shapes identifiable in the graph, and are better triggered with the waveform mechanisms than with the transient peak-voltage method.
Be sure to check both transient and waveform capture for important clues in each power quality investigation.
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