User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-1: T
3
CAS Computer Unit Interface Description (cont)
(Applicable to Part No. 9005000-10000, -10101, -10202, -10204, and -11203)
Connector
Pin
Designation
Functional Description
RTP-4G, 4H
ARINC 429 CFDS Input to TAWS: [RTP-4G (A), RTP-4H (B)]
This differential pair input is a low-speed ARINC 429 bus (12.5k bits/second
nominal), that receives data from an onboard maintenance computer or a central
fault display system to the TAWS function. NOTE: These pins are designated for
CFDS if T
3
CAS is operating as TAWS and TCAS only with internal transponder
disabled. Else these pins are Spares.
RTP-4J
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A7.
RTP-4K
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A8.
RTP-5A, 5B
Weather Radar/Predictive Windshear System Hazard #2: [RTP-5A (A), RTP-5B
(B)]
This high-speed input is provided for TAWS application to receive predictive
windshear information.
RTP-5C
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A9.
RTP-5D, 5E
Spare
RTP-5F
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A10.
RTP-5G, 5H
ARINC 429 CFDIU Input to Internal Transponder: [RTP-5G (A), RTP-5H (B)]
This differential pair input is a low-speed ARINC 429 bus (12.5k bits/second
nominal), that receives data from an onboard maintenance computer or a central
fault display interface unit to the internal transponder.
NOTE: These pins are designated for CFDIU inputs if T
3
CAS is operating in full
configuration mode with TAWS, TCAS and internal transponder enabled. Else
these pins are Spares.
RTP-5J
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A11.
RTP-5K
Strobed Program Pin
TAWS/XPDR #11: Max True Airspeed
Refer to sub-section 3.C. TAWS/XPDR Pin Programming
RTP-6A, 6B
FMGC #1 Own C/FMGEC #1 GEN 1 Interface: [RTP-6A (A), RTP-6B (B)]
This low-speed bus inputs all labels associated with the Flight Management
Computer to T
3
CAS.
RTP-6C
Discrete Input (Gnd/Open)
XPDR Mode S Address Bit A12.
RTP-6D
Strobed Program Pin
TAWS/XPDR #1: Aircraft Type. Refer to Table 4-19: Aircraft Type Configurations
4-4
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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