multiplying waveform from oscilloscope for power analysis

[day831]

Hi guys, 

I am new to labview. Currently I am using Labview 8.5 to connect with Tektronix TPS 2024B osciliscope for calculating power. I use the example code from Labview (tektronix TDS series acquire continuous waveforms.vi) to start with.  However, the problem I ran into is I could not mutiply the waveform signal from osciliscope with a test signal (sine wave) I created in Labview. The purpose is to test the P=VI by mutiplying two waveforms together.  Is there a reason for that? If so, how can I fix my program? Can you guys see anything wrong with my program in general?

Thanks for your help   

[Sam_Sharp · Accepted solution]

I suspect your problem is probably because of the dynamic signal data type - use one of the signal generation VIs to generate a sine wave form data type and you should be able to multiply them together. You might have to make sure that they have the same dimensions (e.g. length / dt / start time).

Produces: