IMAQ 1394 problem

[Derrell]

I am having a problem and was wondering if anyone else has had something similar happen.  I am using the IMAQ 1394 driver for grabbing images from a firewire camera within an application written with LV 7.1.1 (running on windows XP).  I have had several occasions where the computer has either shut down or I have gotten the blue screen of death.  After restarting the computer,  I get a time out error when trying to get an image form the camera.  If I open up MAX and try to grap images from the camera I get the same time out error.  If I change the camera mode from Format 7 (which I am using) to something else and them back to Format 7, and change from color mode to B/W mode and then back to color mode, the camera starts working right again.  Any one know what is going on?

[Steffen Hoog]

Derrell,
what kind of Service Pack have you intalled  - SP2 ? Camera type and driver vision could be interesting, too.
I know, that XP SP2 has a problem with the 1394 bandwidth. You can downlaod a fix from:
http://support.microsoft.com/kb/885222/EN-US/

Regards,
Steffen

[Derrell]

Thanks for the info Steffen,

I am indeed using XP SP2, NI IMAQ v2.0.0, and a ISG LW-3-S 1394 firewire camera.  The program that is running is an executable created with labview v7.1.1

[Scott_R]

Hello,

Did the fix for SP2 that Steffen recommended help?  Have you tried uninstalling and reinstalling the NI-IMAQ for 1394 drivers?  Have you checked the documentation for your camera to be certain that it has full support for the acquisition window size and other format 7 parameters that you are trying to use?

Regards,

Scott R.

Applications Engineer

National Instruments

[Derrell]

I did install the SP2 patch but it is too soon to tell if it has solved our problem. The problem just happens occasionally and I can't reproduce it at will. I have not reinstalled the 1394 IMAQ software but I do know that our camera supports the window size and format.