Imaq 3.0 Driver, How much memory do I need to run Snap.vi?

(1) When I am using ROI in the Snap.vi, the array should be in order of Left, Bottom, Right and Top to work it right, which is different from what Help says, that is, Left, Top, Right and Bottom. Which one is right?
(2) How much memory do I need to run the Snap.vi? 3.0 Driver seems to need more memory than 2.5.1 Driver did. I have 255 MB RAM on my computer, but in reality, the memory usage is used over 255 MB to capture 640*480 picture.
Could you give me a comment about this memory issue?

Hello GraceSun.
(1). The help menu is correct, the array should be Left, Top, Right, and Bottom for the ROI input.
(2). I am not sure exactly what behavior you are seeing with the memory problems in 3.0. You should be able to run an image snap no problem, the memory useage will vary, but will be much less than the RAM on your computer. Be sure that you are not running an IMAQ Create.vi inside of a loop.
Try running the example VI called HL Snap.vi, which can be found by going to Help&#187Find Examples. . . and browsing by directory structure. This VI should not be taking up too much RAM on your computer.
Hope this helps!
Regards,
Colin C.
Applications Engineering
Colin Christofferson
Community Web Marketing
Blog

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