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MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
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Table 1. TCAS System Components (Honeywell Supplied)
(cont)
Equipment
Honeywell
Part Number
Description
TCAS Processor (cont)
TPA-100A (cont)
940-0300-001
940-0400-001
The TCAS processor receives own-aircraft data
from on-board aircraft equipment on these inputs:
magnetic heading, and pitch and roll attitude on an
attitude heading reference system (AHRS) 429 bus
or X, Y, Z synchro inputs; radio altitude from 429
digital or analog radio altimeters; discrete inputs
from the aircraft switches and straps; discrete
advisory inhibit inputs from ground proximity and
wind shear warning systems; discrete input from an
advisory cancel switch.
The TCAS processor outputs a suppression pulse
to on-board L-band rf equipment and receives
suppression pulses from the same L-band
equipment.
Voice audio advisory outputs are provided to a
cockpit speaker and headphones, and discrete
advisory alert outputs are provided to optional tone
generators and lamps. Straps are available to
select loudness for the speaker and headphones.
The TCAS processor input/output (I/O) is equipped
to communicate with a centralized fault display
system (CFDS) or maintenance computer through a
bi-directional ARINC 429 data link and gives
airborne test equipment (ATE) equipment test
points. ARINC 429 data can be supplied to a digital
flight recorder and an ARINC 573 output port is
available for a nondigital flight recording.
