Power Measurements

NI-DCPower can be used to measure power flowing into or out of the NI PXI-4130. Use the Measure Multiple VI to measure both current and voltage for the channel you want to make the power measurement on. Be aware that these two measurements do not occur simultaneously, and as much as 250 μs may elapse between the two measurements. If the voltage and current have the same polarity (both positive or both negative), the NI PXI-4130 is sourcing power. If they have opposite polarities (one positive and one negative), the NI PXI-4130 is sinking power.