Phase Relationship between voltage and Current

[SonobondRay]

I am using LabView 7 Express, and I'm bringing in a two voltage signals (one represents voltage and the other current). I would like view the phase relationship between the two, but I am not sure how because I am still learning the software. So what I really looking for is how far out of phase is the current compared to the voltage. please help me.

[Alberto]

Hi,
use the following vi:

\LabView 7\examples\DAQ\SCXI\_SCXI.LLB\Graph and Calculate Phase Difference (SubVI).vi

It calculates the phase difference in radians of two input signal of the same frequency.

Good luck,

Alberto

[SonobondRay]

Alberto,

Thank you for your help, but I need a little more help. I tried to wire a Waveform Graph to the Phase Difference terminal on the Graph and Calculate Phase Difference (SubVI).vi. It seems as though the vi. is only collecting one point of data for output through the phase difference terminal. I need to be able to plot the phase difference between the two signals throughout the entire sampling time.

Please Help