Uncertainy in Time-Loop for Image Capturing

[Emanuele_S]

Hi everyone,

I set up a sequence image acquisition through a old Basler camera using Labview. The frame rate is 10 Hz. It is regulated by an external signal generator, which acts as a trigger. The acquisition at 10 Hz runs smooth, how much would you estimate the uncertainty in the frame rate? Do you think that 10% of the frame rate is too much?  This means each image is taken every 0.1 seconds with an uncertainty of +/- 0.01 seconds...

Please let me know what you think about it.

ES

[crossrulz]

If you have a signal generator set up as a clock, then your camera should be capturing images within the error of your clock.  I do not see where LabVIEW would make a difference here.

[Bob_Schor]

It is much easier to give an answer if we can see exactly what you did, and how you did it.  Please post your VI (post the actual VI or an executable VI Snippet, as we need to be able to edit and test it).

Often times, the hardware (such as the camera) are your best source of timing.  You can, in fact, test it by using the High Precision timer and measuring the reproducibility of the frame rate (or time between frames).  If it turns out that it is stable, use the Camera as your "clock" and have it drive your loops.

Bob Schor