What is the PXI-7854R Digital IO Type and is it User Setable.

[BYeske]

Are the Digital Outputs on the 785x cards Line Driver, Open Collector, or Push-Pull Outputs?

Specifically the card I am working with is PXI-7854R.

Here is my basic question, but notice that the R-series cards are missing.

http://digital.ni.com/public.nsf/allkb/C8C2A19E31A38A24862570280075C406?OpenDocument

Also, does the card have the capability to select which type of DIO is implemented?

Here is a write up I found doing this via DAQmx, which I of course don't use for this card.

http://digital.ni.com/public.nsf/allkb/D9B4018C3E540CE4862570F30068C0DB?OpenDocument

[diabeticdaniel]

The type of digital output can be manipulated through your FPGA code.

For example, you can set the "Output enable" to true, then toggle the output value between true and false to make the card source and sink accordingly.

You can achieve an open drain configuration by setting the output value to false, then toggle the "Output enable" between true and false. In the true setting, it turns on the false output and sinks current. In the false setting, the output is disabled and set to a high impedance.

You can have an active-high, high impedance low configuration by setting the output value to true and toggling "Output enable" between true and false. In this setting, the true output setting will source current when output enable is true, and when output enable is false, it will be set to a high impedance.