phase shift - Electronic Circuits Projects Diagrams Free

mayeewa · 27th September 2008, 07:06 AM

Dual-beam mode and x-y mode are 2 methods to measure the phase difference of 2 sine waves with the same frequency.

which one gives high level of precision and accuracy?? can you give a detailed explanation??

Thank you for help.

MrAl · 27th September 2008, 10:40 AM

Hi there,

The mode that is the best is the one that allows the greatest screen distance
between the reference phase and the input phase.
Since the x y mode is limited to phases that are relatively large and it is
also very hard to judge small angles on screen, and the dual beam can spread
the phase difference out along the screen x axis even for small phase angles,
I'd go with the dual beam method.

Think about it this way:
How would you measure a phase angle of 0.1 degrees using the x y method?
How would you measure same with a dual beam?

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27th September 2008, 07:06 AM	(permalink)
mayeewa	phase shift Dual-beam mode and x-y mode are 2 methods to measure the phase difference of 2 sine waves with the same frequency. which one gives high level of precision and accuracy?? can you give a detailed explanation?? Thank you for help.

27th September 2008, 10:40 AM	(permalink)
MrAl	Hi there, The mode that is the best is the one that allows the greatest screen distance between the reference phase and the input phase. Since the x y mode is limited to phases that are relatively large and it is also very hard to judge small angles on screen, and the dual beam can spread the phase difference out along the screen x axis even for small phase angles, I'd go with the dual beam method. Think about it this way: How would you measure a phase angle of 0.1 degrees using the x y method? How would you measure same with a dual beam? Last edited by MrAl; 27th September 2008 at 10:41 AM.