What kind of power meter is this? Power quality meter? Can it accurately read power if the mod output is pulse width modulated? I haven't used power meters but have used spectrum analyzers, I would expect that to show you the frequency of the mod pulses which different mods use different frequencies from what I've read. I've often wondered if the display Watt reading is accurate, and that all depends on the accuracy of the voltage sensor and resistance measurement of the coil (assuming the mod adjusts voltage based on the resistance reading to get the power level you select). Also would expect the power to decrease as the coil heats up increasing resistance unless the mod reads the resistance on a relatively fast frequency interval. Let us know what you find! It would be nice to see the actual voltage pulse waveform on a scope as you change power...
