Multi-channel imaging using NI frame grabber

We have a IMAQ 1408 being controlled by LabVIEW 8.0.
We wanna setup multi-channel imaging. All the channels work individually. However, when I was trying to show two channels simultaneously, only one channel works, and I got the following error message:
Error -1074397150 occurred at IMAQ Grab Setup.vi
Possible reason(s):
NI-IMAQ: A timeout error occurred while waiting for the specified event. If waiting for an image, verify that all video data is acquired within the timeout period. If waiting for a signal, verify that the signal assertion occurs within the timeout period.
I sometimes also get another error message asking me to assign different buffer to both channels. I understand that IMAQ 1408 has only one analog to digital converter (ADC) to digitize the incoming video. It can acquire from up to four different cameras, but only from one camera at a time.
I don't mind making the frame rate half. So I'm thinking of showing one channel at a time and make the two channels work alternantly. But I need to know how to confige the channels to make this happen.
Solved!
Go to Solution.

Hi Andrew,
Thanks for the reply! I've read the page. But it doesn't tell me how to assign the buffer.
Please see attached for my code.
Here is another error I got from channel 2:
Error -1074397158 occurred at IMAQ Grab Acquire.vi:10
Possible reason(s):
NI-IMAQ: No buffers configured for session.
Thanks!
Attachments:
grab_dual channel 2.vi ‏63 KB
grab_dual channel 2.jpg ‏41 KB

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"Blue" wrote in message
news:5065000000080000006F1D0000-986697009000@quiq.com...
> Has anyone been able to use a DataTranslations Frame grabber with CVI?
> I am trying to use a DT3152 in place of NI1408 frame grabber...
>
> DT does not provide drivers for this hardware to interface to CVI or
> LabView. Has anyone had success?

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