Sequoia / Tahoe Series User Manual California Instruments
M447352-01 REV-A 225
Figure 5-231. Cress Factor Measurements
WATT HOUR Displays the energy, kWh, consumed by the load, and the true
power in kW. The Start and Stop function determines the interval
during which energy is calculated. The Clear function resets the
accumulated energy value.
Figure 5-232. Watt Hour Measurements
CURRENT THD Displays the total distortion of the output current. The distortion
calculation is based on the harmonic currents, H2 through H50,
relative to the total RMS value of the current. Another common
definition of THD calculates the harmonics relative to the value of
the fundamental current H1. There might be a difference in
results depending on the harmonic content. The method is
selectable over the digital interface with the SCPI command,
MEAS:THD:MODE <value>, with the value being either RMS
(relative to total RMS) or FUND (relative to fundamental).
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