I'm trying to measure inrush current by looking at the voltage of a 0.1ohm resistor in the line within the first 50uS of flipping a relay to a variable AC source. Problem is that the new AC source that I have (chroma 61605) apparently has an impedance issue which prohibits good inrush measurements. (E.g. 120VAC @ 60HZ is way different from it than from the wall when it comes to <50uS "turn on" measurements of inrush current). Any way to overcome this?