Pacific Power Source LMX Series Operation Manual page 113

The following examples illustrate the different behaviors between AUTO RMS mode ON and OFF.
6.4.18.1 AUTO RMS ON Mode:
In the example below a, 100Vrms sine wave is swapped for a half wave rectified ac
waveform. The RMS value of this non-sinusoidal waveform is 1.414x that of a sine wave so
the peak value is increased to maintain a 100Vrms output voltage with this wave shape. Not
that there is a considerable amount of DC offset present as well due to this non-symmetrical
waveform.
6.4.18.2 AUTO RMS OFF Mode:
Same waveform example but this time with AUTO RMS mode OFF results in no change to
output peak voltage but the actual RMS voltage during these four cycles is only 70.7Vrms
instead of the 100Vrms programmed setting.
Note: In UPC Compatibility mode, this mode is always enabled.
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LMX Series Power Source Operation Manual
LMX SERIES™ OPERATION MANUAL
Front Panel Operation
SECTION 6:
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