PPA5xx/15xx user manual
11-2
where n is the number of samples for an integral number
of complete cycles of the input waveform.
Note that the mean value will not give the same
measurement as rms. The form factor indicates the ratio of
mean to rms:
form factor = rms / mean
For an undistorted sinewave, the form factor is given by:
sine wave form factor = π / 2√2
= 1.11072
There is also an option to normalise the rectified mean
measurement (factor = pi / 2root2 = 1.11072) as form
factor is always computed from the absolute value (before
normalisation).
Both Voltage and Current positive and negative peak are
available, filtered and unfiltered.
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