IMAQ 1394 Grab setup and Grab acquire

[haiyueli]

Hi, everyone

I am very new to Labview and have a general question on grabbing images using my CCD camera.

I set "IMAQ 1394 configure trigger.vi" before " IMAQ 1394 grab setup.vi" and then achieve the most current using " IMAQ 1394 grab acquire.vi".  The configure trigger is on Mode 0 (Low activity) and my digital trigger is a pulse train with a trigger frequency of 10Hz.

My questions is as follows:

1. How many images will the camera grab when the trigger turns to a falling edge? Just one or the camera will grab continuously?

If the camera grab continuously, which image is copied when a "IMAQ grab acquire.vi" is called?

2 Does the image grabbing process stop when the trigger turns to the rising edge?

Thanks!

[FuManWho]

Hi Haiyueli,

The NI-IMAQ for IEEE 1394 has been replaced by the IMAQdx driver. We usually recommend that you upgrade your driver. That being said, I would recommend looking at the help to determine what the mode does. To do this right click the VI and select Help. This should give you a more in-depth look at the function.

Here is a forum post which describes mode 1:
http://forums.ni.com/t5/Machine-Vision/Problem-with-IMAQ-1394-trigger-mode-1/td-p/300534