PPA5xx/15xx user manual
9-14
9.7 Input compensation
This compensation option subtracts the power absorbed by
the voltage input.
When measuring low power with the voltage input wired
after the current input the Power measurement would
include the power absorbed by the voltage attenuator.
For example, at 230V a 1MΩ voltage attenuator would
absorb a power of 0.0529W (230²/1M). Enabling Input
compensation subtracts this power and the corresponding
currents from the measured values.