# Measuring Relative Phase Between A & B

Forum for discussing PicoScope version 6 (non-automotive version)

### Measuring Relative Phase Between A & B

I am measuring 2 sin waves using channels A & B.

I want to measure the Phase difference between A & B in percent if possible.
What are the best ways of doing this?

I am using PicoScope 2000 series
leepaulwilkins
Newbie

Posts: 0
Joined: Wed Jul 13, 2016 9:41 am

### Re: Measuring Relative Phase Between A & B

leepaulwilkins wrote:I am measuring 2 sin waves using channels A & B.

I want to measure the Phase difference between A & B in percent if possible.
What are the best ways of doing this?

I am using PicoScope 2000 series

There is a math channel formula posted in various places on this board that computes phase shift within the PicoScope App: acos(integral(A*B)/(sqrt(integral(A*A))*sqrt(integral(B*B))))/Pi*180
If your signals are clean that might work well.
hexamer

Posts: 62
Joined: Tue Aug 12, 2014 10:09 pm

### Re: Measuring Relative Phase Between A & B

Alternatively pull in the phase rulers from the bottom right corner, green circle, and place either end of one complete cycle. Then pull in a time ruler from bottom left, white square, and place on the other wave at the point you wish to check, the ruler legend will show the phase difference. If you select Rulers in bottom bar of the PicoScope software you can change from degrees to percent.
Martyn
Technical Support Manager
Martyn