General

The TCAS computer has analog and discrete interfaces with these components:

· Top and bottom TCAS directional antennas

· Landing gear lever switch

· Proximity Switch Electronics Unit (PSEU)

· Ground proximity warning computer (GPWC)

ILF 404, 405, 410, 414-417, 422-429, 451, 501-509, 510-517, 519,

520-527, 536, 541, 542, 551

· Weather radar

· DME/ATC/TCAS suppression coax tees

· Display electronic unit (DEU) 1 and 2

· Remote electronics unit (REU).

Program pins control the configuration of the TCAS computer.