DAQ Hardware Digital I/O - Some cards only do TTL 5V and it would be nice to have level shifting (programmable or externally driven)

[johngardner58]

I use a PXIe-6363 which a wonderful device.   But it lacks level shifting at the digital I/O.

I would recommend that most DAQ multi-io devices support programmable and externally driven level-shifting for digital IOs.   Range for DAC driven level-shift (0.8 - 3.6, 5V),  and support for external input.   It would also be nice if multiple ports are present that some of them allow independent logic levels.  Default level should be 3.3V.    Port configurable pull-up, pull-down and latch-hold.

[RogerPaulsen]

I agree.  They need to have programmable I/O levels to support several digital I/O standards.  They also need to all have hardware controlable timing.