User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 4−11
15 Dec 2005
Table 4−1. TCAS 3000 Computer Unit Loading/Gradient Specifications (cont)
Connector Pin
Designation
Functional Description
RMP−13F Landing Gear Discrete Input (NO)
The TCAS computer unit monitors this discrete that indicates the landing gear position.
An open indicates the gear is retracted (gear is up) and a ground indicates the gear is
extended (gear is down).
RMP−13G Climb Inhibit No. 2 Discrete Input (NO)
See RMP−1J.
RMP−13H, 13J Radio Altimeter No. 1 Input: [RMP−13H (A), RMP−13J (B)]
This input is provided for ARINC 429 altitude inputs from an ARINC 707 digital radio
altimeter. Radio altitude data is used for computation of sensitivity level, inhibit descend
advisories, and inhibit aural annunciation when in close proximity to the ground. Also see
RMP−2H.
RMP−13K TCAS System Valid Discrete Output (NO)
This discrete output indicates the health status of the TCAS computer unit to other
avionics systems that monitor TCAS system status. This output is used in retrofit
installations where instrumentation needs to monitor TCAS status. A ground at this pin
indicates normal TCAS operation. An open indicates a TCAS fault.
RMP−14A, 14B ARINC 429 TX Coordination Bus No. 2 Output: [RMP−14A (A), RMP−14B (B)]
This differential pair output is a high speed ARINC 429 bus (100K bits/second nominal),
that transmits data from the TCAS computer unit to the No. 2 Mode S Transponder.
The labels on this bus are as follows: 273, 274, 275.
RMP−14C RA Display No. 1 Status Discrete Input (NO)
This input provides the functional status of RA Display No. 1. A ground on this pin
indicates a valid display. If this discrete is not used by the RA display, connect to aircraft
ground to prevent RA DISPLAY No. 1 fail message during self−test.
RMP−14D, 14E Selected Altitude701/720 ARINC 429 Bus Input
Reserved for future use.
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.
The labels on this bus are as follows: 013, 015, 016, 203, 271, 272, 273, 274, 275, 276,
277, 350.
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.
The labels on this bus are as follows: 013, 015, 016, 203, 271, 272, 273, 274, 275, 276,
277, 350.
RMP−14K Spare Pin