Change IMAQ1394 speed acquisition parameter programmatically

[RobKijger]

Hi,

I am using LabWindows/CVI and Legacy NI-IMAQ IEEE1394 driver.

I want to set the Speed acquisition parameter in my program.

MAX can do that (there is a drop down list to change the speed to 100Mb/200Mb/400Mb.

How can I implement this in my program? The problem is that I cannot find which attribute to change.

For example for brightness, the attribute IMG1394_ATTR_BRIGHTNESS exists?

But for speed?

If I take a look at niimaq1394.h I see an enumeration data type, but nothing else on speed.

Any help would be appreciated! Thanks.

Regards,

Robin

[RobKijger]

So...

Anybody who did not overlook my question? 😉

[isles · Accepted solution]

Hello,

Following procedure might meet your requirement.

1) Close the camera.

2) Open "camX.iid" file and find the "CameraFile" name.

"cam0.iid" of my IMAQdx on VISTA is located

c:\users\public\Documents\National Instruments\NI-IMAQdx\Data\

3) Open the camera file and edit the parameter you want to change and save.

4) Reopen the camera.

These files are simple text file. 

[RobKijger]

Thank you for your reply. I thought it would be easier, but this could work as well.