User's Manual Part 2

T
2
CAS / Part No. 9000000
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
34-43-20
15 Feb 2003
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
4--14
Table 4--1. TT--950/951/952 T
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CAS Computer Unit Interface Description (cont)
Connector Pin
Designation
Functional Description
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CAS Computer Unit Right Bottom Plug (RBP)
RBP--1A
Thru
RBP--1G
Reserved for TAWS/RWS use.
RBP--1H RA Data Word 270 Bit 18 Discrete Output
This discrete output provides RA information to the ARINC 573 flight recorder. The
output goes to the “ground” state each time its associated bit within the advisory field of
the RA output words changes from a “zero” condition to a “one” condition. The output
remains in the “ground” state for as long as the associated RA bit remains non--zero.
This output is read by the flight recorder as either a series or shunt output.
NOTE: The discrete is pulled up to +28 Vdc in the “open” state.
RBP--1J RA Data Word 270 Bit 19 Discrete Output
See RBP--1H.
RBP--1K RA Data Word 270 Bit 20 Discrete Output
See RBP--1H.
RBP--2A
Thru
RBP--2G
Reserved for TAWS/RWS use.
RBP--2H RA Data Word 270 Bit 21 Discrete Output
See RBP--1H.
RBP--2J RA Data Word 270 Bit 22 Discrete Output
See RBP--1H.
RBP--2K RA Data Word 270 Bit 23 Discrete Output
See RBP--1H.
RBP--3A, 3B Radio Altimeter No. 2 ARINC 552/Analog Input: [RBP--3A (HI), RBP--3B (LO)]
See RMP--2H and --2J.
RBP--3C Radio Altimeter No. 2 Valid Discrete Input (PO)
See RMP--2H. Valid condition is greater than +18.5 Vdc. Invalid is open.
RBP--3D, 3E Radio Altimeter No. 2 Input: [RBP --3D (A), RBP --3E (B)]
See RMP--13H. Also see RMP--2H.
RBP--3F,
RBP--3G
Reserved for TAWS/RWS use.
RBP--3H RA Data Word 270 Bit 24 Discrete Output
See RBP--1H.
RBP--3J RA Data Word 270 Bit 25 Discrete Output
See RBP--1H.