User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-2: T
3
CAS Computer Unit Interface Description
(Applicable to Part No. 9005000-11801 and -55801)
Connector
Pin
Designation
Functional Description
T
3
CAS Computer Unit Right Bottom Plug (RBP)
RBP-1A, 1B
Reserved: PCI Mezzanine Card Ethernet #1 RX (+/-)
RBP-1C, 1D
Reserved: PCI Mezzanine Card Ethernet #1 TX (+/-)
RBP-1E
Reserved: GND/OPEN Discrete Input
RBP-1F, G
Reserved: GPS Time Mark A422 Input
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
THRU
RBP-2G
TCAS/ADS-B In #3 thru TCAS/ADS-B In #9 Pin Strobing discrete inputs.
See RMP-3H, RMP-3J, RBP-3F, RBP-3G
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 (Right) Input: [RBP-3D (A), RBP-3E (B)]
See RMP-13H. Also see RMP-2H.
4-58
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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