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Why do camera settings get reset on grab?

In my LabWindows app I can change my camera settings with serial commands, and verify that the new settings are correct. However, when I run a grab they revert to the settings in the .icd file. Why is this? I have a Dalsa Pirahna HS-40 40 MHz camera and a PCIe-1427 board. In my LabWindows program, I open an interface and a session. I can then send and receive serial commands to the camera, to change parameters such as the current test pattern or frame rate. When I send a serial command to query the camera, it returns the new settings. If I then acquire images using the "imaqSetupGrab" and "imaqGrab" commands, however, I find that the camera reverts to the various settings in the .icd file.
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Hi,

 

Please take a look at this document:

 

http://digital.ni.com/public.nsf/allkb/026C703CF6A9BB308625711D0003FC2C?OpenDocument

 

I think this is why you are seeing the mentioned behavior.

 

Regards,

 

Greg H. 

Applications Engineer
National Instruments
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