User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
and airlines. The T
3
CAS Transponder function interfaces to all commonly
used Mode S and Mode S/TCAS control panels.
The T
3
CAS Transponder function has a dedicated low-speed ARINC 429
data input for receiving the Aircraft Identification Subfield (AIS) Flight
Identification from another aircraft system (i.e., a Flight Management
System [FMS] or Onboard Maintenance System [OMS]). The flight ID
can also be received on DAPS busses (high- or low-speed) or from the
control panel on the control data bus (low-speed). The flight identification
can be the aircraft flight number or tail number.
(e) Discrete Interfaces and Configuration Interfaces
The T
3
CAS Transponder function has discrete inputs for configuration
and control of Mode S Transponder functions and interfaces, and
discrete outputs for annunciating transponder status information. The
T
3
CAS Transponder function implements the discrete inputs and outputs
defined by ARINC 718. The input/output discretes default to an open
state when power is removed.
(f) Maintenance Computer Interface
The T
3
CAS Transponder function has a maintenance computer interface
that allows maintenance and test data and histories to be obtained from
the unit while it is installed in an aircraft. The transponder interfaces with
maintenance systems for all major airframes via low-speed ARINC 429
input and output data busses.
(g) Navigation Data ARINC 429 Interface
The T
3
CAS Transponder function has ARINC 429 input bus circuitry for
extended squitter and enhanced DAPS capability. The transponder
meets ELS/EHS requirements.
Pub. No. 8600200-001, Revision 004
34-45-29
1-37
04 Nov 2014
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