PFIs on E series configured for input, by default?

[jonny e]

Are the PFIs on the E series configured, by default, for input?
I work with a 6071E board and am trying to trigger analog acquisition with an external trigger on PFI0/TRIG1, but it's not working.
Of course, there could be any number of reasons for this (especially comedi software...ugh), but I wanted to make sure I don't have to explicity configure PFIs for input to use them as such.
thanks, jon

[JustinBritten]

The lines are configured for input by default. According to Appendix C of the E Series User Manual at system power-on and reset, both the PFI and DIO lines are set to high-impedance by the hardware. This means that the device circuitry is not actively driving the line either high or low.

Regards,
Justin Britten