Hi,
Have you tested the power supply of the camera? Have you tried another PCI-slot? Another cable?
Make sure that the camera is connected to the board and it is powered (this is the most common problem). Tricky variations on this problem include defective power supplies, systems that power-up when the application is run, defective cables, and cables connected to the wrong channel or input.
Make sure you are attempting to acquire using the correct interface file (e.g. img0.iid), the correct channel, and the correct camera file for you camera type (ie, RS170/CCIR/NTSC/PAL, etc.). Your camera specifications should indicate which signal type it outputs. Make sure the camera file has not been modified by right-clicking on the channel and selecting New>> {RS170/CCIR, etc.}. This will bring up a dialog prompting you to choose a name for your new camera file. Choose a different name, then try the acquisition again. Your new file will have been initialize to the correct default settings for your camera type.
The PCI/PXI-1407 and 1411 boards have a Lock Speed parameter which you can adjust to a faster setting to enable the board to lock onto a poor VCR signal.
Occasionally with very weak signals (due to long cable runs or noisy environments), you might need to force the board to use a higher gain. This can be done by reducing the white reference level and/or increasing the black reference level (where applicable) in the channel Properties window.
If none of these help, try to make sure that the camera is supplying a "good" video signal. Some older cameras might put out a nonstandard number of lines, which will cause difficulty for the locking circuitry on the board. Try acquiring with another board in another computer if possible, or try acquiring from another camera with the same board. You might also want to run the diagnostics from MAX to test several components of the board
Maybe the board needs to be repaired?
Regards.
JV