How can I measure the phase difference of two input signal?

[Dae-han Choi]

Hello,

I'm trying to measure the phase difference of two input sine waves with the
same frequency.
Is there anybody how I can do this with labview?

Thanks,

Dae-han

[Mark_Ireton]

There is a vi in Analyze->Waveform Measurements->Extract Single Tone Information that will return the phase of a signal. You would need to run this on each waveform then subtract one phase from the other.

[Mark_Ireton]

I should have also mentioned that some oscilloscopes can make this measurement directly.

[Dmitry Strekalov]

This is my case! I have TDS3034 which can measure phase. However when I open Read Waveform Measurement vi that comes with tkds30xx.llb, I have a number of options under "measurement function" but not the phase measurement. May be I need another vi to do this?