Users Manual

ALL
EFFECTIVITY
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 5-47
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
(2) The ACD transmits on the ARINC 429 "Data to MCDU 1,2,3" interface, Label 274
SATCOM OCA Discrete Data Definition, at a period of 100 ms ±10 ms.
Table 5-12. SATCOM OCA Discrete Data Definition
Bit Range Field Name (Discrete Format) Valid Values/Ranges
8-1 Label 274o
274o
SDI 01b = SDU 1
10b = SDU 2
11
Network Coverage Status
0 = Network coverage Not Expected
1 = Network Coverage Expected
12
SAT OCA Command Status
0 = Not Available
1 = Available
13
SAT Manual Logoff
0 = False
1 = True
29-14 Reserved 0
31-30
SSM 00b = Normal Operation
10b = Functional Test
32 Parity
Odd
(3) If ORT configured for Aircraft Directed Dual Safety SATCOM, the ACD transmits on the
ARINC 429 "Data to MCDU 1,2,3" interface, Label 270 SDU to TCP "ACARS" Status
Word, at a period of 1 second ±100 ms.
NOTE: The content of this label is the same as the Label 270 SDU to "ACARS" MU/
CMU Status Word sent to the CMU; however, this does not imply any
synchronization with transmission of Label 270 on the CMU bus.
(4) If ORT configured for Aircraft Directed Dual Safety SATCOM, the ACD sets the bits of
Label 270 SDU to TCP "ACARS" Status Word to be identical to those of Label 270 SDU
to "ACARS" MU/CMU Status Word.
H. MCDU to SDU - ARINC 739 Receive Labels
(1) If ORT configured for the following:
(a) Aircraft Directed Dual Safety SATCOM
(2) The ACD receives on any of the ORT activated A429 MCDU receive interfaces, Label
272 SATCOM Operational Mode Command word, at a period of 1s ±100 ms.
Table 5-13. SATCOM Operational Mode Command Word (OCA to SDU)
Bit Range Field Name (Discrete Format) Valid Values/Ranges
8-1 Label
272 (octal)
10-9
SDI 01b if strapped to SDU 1
10b if strapped to SDU 2
DRAFT
3rd rvw Draft as of:
29 January, 2020