Alain,
The TNT4882C ASIC (used in the PCI-GPIB board) will automatically be unaddressed to talk on MLA and unaddressed to listen on MTA. Therefore, you device should be T6 and L4 (assuming you do not suport secondary addresses). The TNT4882C uses tri-state drivers during normal operation, so it is E2.
For any future questions relating to the NI-Device beta, please contact me directly. My email address is below.
Thanks,
Eric Singer
eric.singer@ni.com