User's Manual

Table Of Contents
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
RMP-14D,
14E
FCU #2: Selected Altitude 701/720 ARINC 429 Bus Input
Optional TCAS input for ARINC 429 low-speed Selected Altitude labels 025 or 102.
The TCAS must also receive ARINC 429 label 204 Baro Corrected Altitude on the
XT coordination bus (either RMP-14F/G or RMP-14H/J) from the selected
transponder. Also, the selected transponder must be passing label 204 Corrected
Baro Altitude unchanged from the selected transponder’s active ARINC 429 air
data source. TCAS cannot differentiate between label 102 Selected Altitude and
label 102 GPS Vertical Dilution Of Precision (VDOP) so the system integrator must
insure that the correct label 102 is provided to the TCAS.
NOTE: These pins are designated for FCU #2 inputs if T
3
CAS is operating in full
configuration mode with TAWS, TCAS and internal transponder enabled. Else
these pins are Spares.
RMP-14F,
14G
ARINC 429 XT Coordination No.1 Input: [RMP-14F (A), RMP-14G (B)]
This differential pair input is a high-speed ARINC 429 bus (100k bits/second
nominal), that receives data from the No.1 Mode S Transponder.
RMP-14H,
14J
ARINC 429 XT Coordination No.2 Input: [RMP-14H (A), RMP-14J (B)]
This differential pair input is a high-speed ARINC 429 bus (100k bits/second
nominal), that receives data from the No.2 Mode S Transponder.
NOTE: These pins are designated for XT Coordination No.2 if T
3
CAS is operating
as TAWS and TCAS only with internal transponder disabled. Else these pins are
Spares.
RMP-14K
Traffic Selector #1 “Pull” Discrete.
RMP-15A,
15B
Reserved ARINC 429 Bus Output
RMP-15C,
15D
ARINC 429 Input: MMR/GPS #2 [RMP-15C (A), RMP-15D (B)]
This high-speed 429 input is used to receive GPS label input containing position,
velocity and quality information for the use of ADS-B IN applications and by the
transponder function for ADS-B Out.
RMP-15E
Thru
RMP-15H
Reserved for TAWS/RWS use.
RMP-15J,
15K
ARINC 429 TX Coordination No.1 Output: [RMP-15J (A), RMP-15K (B)]
This differential pair output is a high-speed ARINC 429 bus (100k bits/second
nominal), that transmits data from the T
3
CAS computer unit to the No.1 Mode S
Transponder. The labels on this bus are as follows: 273, 274, 275.
T
3
CAS Computer Unit Right Bottom Plug (RBP)
RBP-1A
Thru
RBP-1D
Reserved
4-24
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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