Phase displays? Compared to what ref?

[whatsup]

I am using Labview 7 and I have a question about some of the new features. I am trying to input 2 channels and graph the output amplitude and phase difference. I have tried using the "new" interfaces for "spectral" and "tone" measurements but I am unable to achieve the desired results. I am trying to see the vis that make up those fancy interfaces to see how they work. Anyone know how to view them? How are the phase difference numbers generated in the tone and spectral measurements?

My program is just 2 simple inputs and I would like the signals displayed on a graph displaying amplitude and phase difference. The phase can be a graph or just a simple number indicator. So far no luck with any approach. I have checked the web site
for examples and nothing that simple.

Thanks for any and all help.

Dave

[LocalDSP]

A Phase result can be interpreted in two ways. It can be absolute or relative. For example the Frequency Response VI will return the phase difference between your two input signals as function of the frequency. In other words it is a relative measurement. The Extract tone information returns the absolute (start) phase of your detected sine tone, that can also be viewed as the phase relative the beginning of your signal.

So to measure the phase difference between the two signals run the two signals through the VI and subtract the two phase results from each others the same way you would subtract (or eventually divide) the two amplitude results.