## Measuring Relative Phase Between A & B

Forum for discussing PicoScope version 6 (non-automotive version)
leepaulwilkins
Newbie
Posts: 0
Joined: Wed Jul 13, 2016 9:41 am

### 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 need an accurate reading.

I am using PicoScope 2000 series

hexamer
Advanced User
Posts: 0
Joined: Tue Aug 12, 2014 10:09 pm

### 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 need an accurate reading.

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.

Martyn
Site Admin
Posts: 3662
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

### 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