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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
K. Cabin Communications System (CCS)
(1) The interpretation of this configuration pin is given in Table 5-17.
Table 5-17. Cabin Communications System (CCS)
TP11 Pin B
0
CCS INSTALLED
1
CCS NOT INSTALLED
(2) When wired to the zero state, this configuration indicates that SDU pins MP2J/K and
MP3A/B (CEPT--E1 input and output respectively) are connected to the CCS CTU.
(3) The SDU only logs, reports, and/or indicates inactivity on its CCS input bus when this
strap is in the zero state. The SDU assumes, for functional purposes, the presence of
the CCS from the state of this strap.
L.
Inertial Reference System (IRS)
(1) The interpretation of these configuration pins is given in Table 5-18.
TP11 Pins
C
D
0
0
PRIMARY IRS INSTALLED, SECONDARY IRS INSTALLED
0
1
PRIMARY IRS INSTALLED, SECONDARY IRS NOT INSTALLED
1
0
PRIMARY IRS NOT INSTALLED, SECONDARY IRS INSTALLED
1
1
PRIMARY IRS NOT INSTALLED, SECONDARY IRS NOT INSTALLED
(2) When individually wired to the zero state, configuration pins TP11C and TP11D
indicate, respectively, that the inputs designated for the primary and secondary IRSs
(MP6A/MP6B and MP6C/MP6D, respectively) are connected to an ARINC 429
source of IRS label 310, 311, 312, 314, 324, 325, and 361 information (although label
361, Inertial Altitude, is not required for SATCOM). The actual IRS (i.e., IRS No. 1,
IRS No. 2, or IRS No. 3) driving either SDU input is determined from the source
destination identifier (SDI) bits of the received ARINC words. The SDU only
logs/reports/indicates bus inactivity on either bus if the respective configuration pin
indicates that the bus is supposed to be connected to an ARINC 429 source. The
SDU can assume (for functional purposes) the presence of the IRS connections from
the state of these pins.
Honeywell International Inc. Do not copy without express permission of Honeywell.
MCS--4200/7200 Multi--Channel SATCOM System
Table 5-18. Inertial Reference System (IRS)
Interpretation
Interpretation
23- -20- -35
Page 5--63
15 Jul 2006
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