Honeywell CAS-100 Maintenance Manual page 40

Table 1. TCAS System Components (Honeywell Supplied) (cont)
Equipment Type
TCAS Processor (cont)
TPA-100A (cont)
DIRECTIONAL ANTENNA
ANT-81A
NOTE 1.
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MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
Honeywell
Part Number
940-0300-001
940-0400-001
071-50001
Description
The TCAS processor monitors the failure status
input from external equipment and continuously
does built-in-test diagnostics. When functional
test is started from the Mode S
transponder/TCAS control unit, the TCAS
processor does extensive system functional test
diagnostics.
The front panel liquid crystal display (LCD) has
two controls to give the maintenance personnel
the ability to check the equipment.
The processor contains a front panel Personal
Computer (PC) card slot where internal signal
data can be recorded on a PC card or data from
the PC card can be loaded into the processor.
The TCAS processor receives 115 V, 360 to 800
Hz or 28 V dc primary power and 26 V ac
synchro reference power from the aircraft power
sources.
ARINC 735A assembly screw-mounted directly
to fuselage of aircraft. Contains an array of four
passive, steerable, radiating elements installed at
0° , 90° , 180° , and 270° in the relation to the
forward axis of the antenna. During Mode S and
ATCRBS Mode C interrogation message
transmissions, the directional antenna receives
1030 MHz pulses on the four cabled input from
the TCAS processor.
34-45-47
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1 Dec 2003