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
RBP-1E
Reserved
RBP-1F, G
GPS #2 Time Mark Input: [RBP-1F (A), RBP-1G (B)]
These RS422 differential pair inputs are provided to receive the Time Mark signal
from an external GPS receiver in order to provide synchronization with other
aircraft systems. This signal is also used to remove the latency error from GPS
when available.
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 V dc 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
Program Pin Parity Input
RBP-2B
Program Pin Parity Input
RBP-2C
THRU
RBP-2G
Reserved for TCAS/ADS-B Pin Strobing.
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 V dc. Invalid is open.
RBP-3D, 3E
Radio Altimeter No.2 Input: [RBP-3D (A), RBP-3E (B)]
See RMP-13H. Also see RMP-2H.
Pub. No. 8600200-001, Revision 004
34-45-29
4-25
04 Nov 2014
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