Can't Grab images continuously from 2 cameras @ the same time using IMAQ 1408

[Becks]

Hello i have a problem here. IMAQ 1408 doesnt not seem to be able to capture continuous images from 2 cameras @ the same time. I tried the multi-camera control.vi example it works fine but the programming is sequence form/ snapping which i feel is not that good. I would like to use the imaq acquire to get the 2 continuously images, but it seems that there is some conflict which the labview program unable to lock on to the video source but MAX is able to display both images. Is there better examples to show how to grab the 2 continuous image using the imaq acquire?

[BruceAmmons]

You can set up two cameras to continuously acquire, but there are a few rules.

The 1408 uses a multiplexer to switch between the cameras, so you can only take a picture from one camera at a time. To alternate between the cameras at high speeds, you need to synchronize the cameras, so they both start a new picture at the same time. This way, when you switch between them you don't have to resync to the video signal.

To sync the cameras, they need to have a common signal for starting each frame (VSYNC). For Sony cameras, you can use one camera to provide the signal and run it over to the other camera. For other brands, there is probably a similar method.

Once you have the cameras synchronized, you can run the LL Ring Scan example. With slight modification, this w
ill display the images in two separate windows.

Bruce