IEEE-1394 Camera Trigger

[Alan@pworx]

I have an ISG IEEE-1394 camera and wish to use the external isolated trigger input. The IMAQ driver does not give the choice of which trigger input to use; isolated, or TTL. I need to use the isolated input because I am using industrial triggers that have voltage levels between 10 and 30V DC. Has anyone managed to overcome this problem?

[J.Harv]

Alan--

     Each 1394 camera has it's own attributes. The IMAQ driver simply reads the attributes from the camera and then makes the options available in Measurement and Automation Explorer.  Usually to trigger a 1394 camera you attach the trigger directly to the camera and select to have the camera trigger on or off in MAX.  If you are not able to see an option for a trigger other than TTL, I would first verify that the camera can accept a trigger with such large voltages and then you might get in contact with the camera manufacturer to see specifically how this feature of the camera is supposed to be used and how to expose this functionality.  I tried to go to the ISG website to look through their manual and get some more information but they make many different kinds of 1394 cameras. If you do post back, could you also provide more information?  It will help anyone who reads your posts. If you have any questions though feel free to let us know.

Regards,

John H
Applications Engineer
National Instruments