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Removing phase shift between 2 signals

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Removing phase shift between 2 signals

Postby J2D2 » Fri Sep 27, 2013 8:33 am

Hello,

I am trying to find a way to compare two signals that are pi/4 shifted due to the hardware of the system. In order to compare it, I wan to remove the phase shift of these two signals. And this is the problem. I have an oscilloscope of series 2204 and under math channels, I am really surprised that complex numbers are not available to create a phase shift function, which seems really strange. So is that right and is there any another possibility to remove a phase shift?

Best regards and thank you for your support !
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Re: Removing phase shift between 2 signals

Postby Martyn » Wed Oct 09, 2013 7:22 am

Unfortunately that can't be done in software at the present time, it may get added in the future if there is sufficient demand for it.

As a work around you could create a reference waveform for one of the channels, and display this instead of the actual channel. Reference waveforms can be moved in the time axis.

You may also be interested to know that the new beta software 6.8.3 has phase markers, with associated rulers, which may be of interest and help to show the phase relationship between the signals.
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Re: Removing phase shift between 2 signals

Postby mivsek » Tue Apr 01, 2014 5:54 pm

Possibility to add a phase shift between A and B into expressions would be very helpful for many calculations, like capacitance and inductance, for instance.
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Re: Removing phase shift between 2 signals

Postby Martyn » Wed Apr 02, 2014 8:39 am

The closest we can currently get would be to add a Maths channel which Advances/Delays the signal
Code: Select all
Advance/Delay. Add [t] after a channel name to advance it by t seconds. For example, A[0.001] is equal to Channel A advanced by 1 millisecond, and A[–0.001] is equal to Channel A delayed by 1 millisecond.
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