Airbus Iridium SATCOM System
165E5733-00
L-3 Aviation Recorders Proprietary
Issue, Rev. 02
21 January 2014
Page
34
3.9 ARINC 429 Receiver Activity Status
Defines the criteria the Airbus Iridium SATCOM System uses for determining whether a receiver port
is active. A bus is generally declared active when 4 consecutive words at the specified rate are
received, and declared inactive when 4 consecutive samples fail.
Table 3-7 – ARINC 429 Receiver Port Monitoring
Receiver
Activity Label
Min. Update Rate
ATSU / FWC
270
1 Hz
ARINC 739A MCDU
270 / 377
1 Hz
Airbus CFDS
125 / 260
1 Hz
3.10 ARINC 429 Transmitter Protocols
Table 3-8 – ARINC 429 Transmitter Protocols SDU – ATSU/FWC
3.10.1 From SDU to ATSU / FWC
Destination:
ATSU / FWC
Speed:
High (Configurable)
Label Parameter
Format
Transmit
Rate
Update Rate
172
SDU Identifier
BCD
1 s
–
270
SDU Status Word and Monitoring
Boolean
word
1 s
-
304 ATSU
SAL
HYB
ARINC 618
Block Uplink
BOP (GFI=Eh)
ISO 5
N/A
-
ARINC 618
Block
Downlink
BOP (GFI=Eh)
ISO 5
N/A
-
Содержание SCM L-3
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