The software you are looking for is WinVIEWS (made for the Allied Signal unit I think) The cable connection is serial (RS-232). Cable uses only the XMIT, RCV and GND lines. Pinout may vary slightly within manufacturers.
Enhanced GPWS pins on J2 Rear:
A6 - RCV
A5 - XMIT
A4 - GND
Front pins:
P3 - RCV
P4 - XMIT
P1 - GND
Cheers!
