Is it Possible to Read Digital Signal Using PCIe-1433 or PCIe-1437 Frame Grabber?

Issue Details

Currently I am using PCIe-1433 and for further expansion on the feature of our existing application, I want to acquire digital signal that will be synchronized with the image acquistion. I want to know if the PCIe-1433 has digital pins than can logged digital signal while synchronizing with the image acquisition.

From my understanding, frame grabbers do have digital I/O but they are used for triggering and not for data acquisition. I was also not able to find the IMAQ function which displays the digital input results.

My question is either PCIe-1433 or PCIe-1437 capable of doing both image and digital input acquisition or do I need to have a separate DIO module?

Solution

You can use NI frame grabber such as PCIe-1433 or PCIe-1437 to read digital input, but it will run in software timing. If your application does not require tight hardware timing you can use frame grabber to acquired digital signal.

You can use IMAQ Trigger Read2 VI to read the digital signal connected to digital input put available on the frame grabber. Refer to the following snippet on how to read digital signal connected to frame grabber trigger terminal.