I saw a question regarding the output current capability of the 9403 32-channel DIO but here's a different version of the question.
What device is being used to drive the outputs?
The user manual indicates output voltages for two output current conditions (100uA & 2mA) and a maximum sourcing current capability for the entire module, but does a poor job of accurately describing current limits. I'm driving a solid state relay that will operate reliably with 3mA of LED current, the number of outputs is limited to less than eight, and I can sink current through the SSR LED rather than source it.
So if the output driver device (or capability) is better defined I could determine the output voltage at 3mA and see if it will work for my application.
Thanks
Chris