I am trying to continuously switch images on the VI, but it freezes when I try to access an oscilloscope through its instrument driver.

I am drawing 2 different colored rectangles contiuously on the screen using a while loop. I try to get information from an oscilloscope while this is switching, but the loop stops while the instrument driver aquires the measurement. The oscilliscope value depends on the switching of the rectangles, so I need them to occur simultaneously.

First you should have the two operations in different loops so one doe snot stop and wait for the other.
This should get you closer to what you are asking if you are not doing this already.
Next, look at the code you are using to get at the scope. If it opens/reads/closes, you can sped things up by opening once, repeatedly reading and only close at the end.
If you have covered all of the above, then provide more info (i.e. post code) So we can be of further assistance.
FWI There was a version of VISA that code "Lock-up the CPU" when doing reads. Are using VISA and do you have the latest version?
Ben
Ben Rayner
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I am trying to continuously switch images on the VI, but it freezes when I try to access an oscilloscope through its instrument driver.

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