I am collecting power traces using the ChipWhisperer Lite and the capture software GUI. What exactly am I looking at? Is it showing me the current measurement or the power (I*V) measurement?
The second thing I am confused about, is how does the software know how to give me the current measurement or power measurement when all I give it is the voltage measurement through the “Measure” SMA connector? If I am doing this on a external target and I put a shunt resistor on the external target, does the ChipWhisperer software need to know the resistor value and the supply voltage of the target device?
Clarification on these questions would be greatly appreciated. I looked over the documentation on the Wiki, but I was not able to find the answers to my questions.