User's Manual Part 2

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CAS / Part No. 9000000

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

34-43-20

15 Feb 2003

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4--6

Table 4--1. TT--950/951/952 T

CAS Computer Unit Interface Description (cont)

Connector Pin

Designation

Functional Description

RMP--6E 2000 FT Altitude Limit Program Pin (NO)

This pin, along with pins RMP--6F thru RMP--6J, select the “can’t climb” altitude in

2,000--foot increments up to 62,000 feet. This is the altitude the aircraft is not able to

achieve a 0.25 G vertical acceleration to a 1500 FPM climb rate for an altitude gain of 750

feet above a certain altitude under all circumstances. The “can’t climb” altitude is

selected by connecting jumper wires from altitude limit program pins to the program

common pin (RMP--6K).

RMP--6F 4000 FT Altitude Limit Program Pin (NO)

See RMP--6E.

RMP--6G 8000 FT Altitude Limit Program Pin (NO)

See RMP--6E.

RMP--6H 16000 FT Altitude Limit Program Pin (NO)

See RMP--6E.

RMP--6J 32000 FT Altitude Limit Program Pin (NO)

See RMP--6E.

RMP--6K Program Common

See RMP--6E.

RMP--7A, 7B ARINC 429 Magnetic Heading/Attitude Input: [RMP --7A (A), RMP--7B (B)]

Reserved for future use

RMP--7C, 7D ARINC 429 TA/RA Display No. 1 Output: [RMP--7C (A), RMP--7D (B)]

This is one of two ARINC 429 high speed (100 kbits/s) bus outputs that supplies data to

the TA/RA display such as a VSI/TRA or EFIS. The other output (TA/RA Display No. 2) is

at RMP--7G and --7H. The TA/RA Display No. 1 outputs are also connected to the front

(PDL) connector, which is used to supply display information to maintenance displays.

See J1--33 and J1--34.

RMP--7E TA/RA Display No. 1 Status Discrete Input (NO)

T wo display status ground/open discrete inputs (Note 1) are provided by the T

CAS

computer unit at RMP--7E (TA/RA Display No. 1) and RMP--7J (TA/RA Display No. 2). A

ground on either of these inputs is interpreted by TCAS to mean the display associated

with that input is operating normally and is capable of displaying the TA/RA information,

and that its data bus is active. An open indicates the inability of the display to present

advisories or indicates its data bus is inactive.

RMP--7F Spare Pin

RMP--7G, 7H ARINC 429 TA/RA Display No. 2 Output: [RMP--7G (A), RMP--7H (B)]

See RMP--7C and --7D.

RMP--7J TA/RA Display No. 2 Status Discrete Input (NO)

See RMP--7E.

RMP--7K Spare Pin