Matrox Electronic Systems II Grabbing Problems, Opto-isolated trigger pulse is not connected

78 Appendix A: Troubleshooting

If the above solution does not work, try the following to determine if there is an IRQ conflict.

❐Under Windows NT, go to Windows NT Diagnostics property sheet (found under Start Programs Administrative Tools (Common). Under the Resources tab, check for devices that are sharing an IRQ with your Matrox frame grabber.

❐Under Windows 98, right-click on My Computer, and select Computer from the presented menu. Go to View Resources, selecting the Interrupt request (IRQ) checkbox. Check for devices that are sharing an IRQ with your Matrox frame grabber.

❐Under Windows 2000, right-click on My Computer, and select Manage from the presented menu. Select Computer in the Computer Management dialog box. Select System Information\ Hardware Resources\ IRQ. Check for devices that are sharing an IRQ with your Matrox frame grabber.

☛Not enough memory to allocate buffer under Windows NT 4.0

This is the message that you will receive if you try to allocate a grab buffer that is greater than the amount of DMA memory specified during software installation. This problem can be addressed by increasing the amount of DMA memory on your computer. Uninstall and reinstall MIL and specify the appropriate amount of DMA memory. Alternatively, re-allocate DMA memory using the included milconfig.exe utility.

Grabbing Problems

☛Opto-isolated trigger pulse is not connected

When using the opto-isolated trigger, both OPTOTRIG- and OPTOTRIG+ signals must be connected. OPTOTRIG- is usually connected to the ground of the trigger source.