I would like to use the PXI-2532 as a 2x256 matrix. There exists many terminal blocks for various other configurations, but I don't see one for a 2x256 arrangement. Is there a terminal block for this 2x256 arrangement? How would I go about to use it like that?
The PXI-2532 is pinned out at its front connector as 16 banks of 2x16 matrices. While NI does not make a 2x256 interface for this module, it would be possible to obtain that configuration if you designed a custom interface. This has been done by at least one other person that I am aware of. The NI-SWITCH driver has native support for the 16 2x16 topology and you can use this to operate your module as a 2x256.
If you decide to pursue this direction, please let us know if there are things that we can do to provide additional assistance for your custom interface (mating part numbers, connector locations, caveats, etc).