power

[MAGNETDODI]

Hello, I want to measure instantaneous power with TDS5032B oscilloscope through GPIB communication. I know that the instantaneous power can be calculated through formula

My question is how to make that equtaion in program LabView. I've tried with trigger model while simulating some sinus signal (which has instantaneous power zero for sinus ) but it doesn't seems to work so far. Here is my picture of my program for one signal. If anyone has any idea what would be the best approach for acquiring data through that equation?

Thank you for your ideas, and suggestions. Regards, Dodi

[crossrulz]

Please keep it in one place:http://forums.ni.com/t5/LabVIEW/instantane-ous-power/td-p/2220606