User's Manual

AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
AIRBUS IRIDIUM SATCOM SYSTEM
Refer to Figure 2. The Airbus Iridium SATCOM System interfaces to various aircraft
systems to monitor, record, and report the aircraft flight and system data. This data
includes aircraft movement and position reports, Flight Data Monitoring (FDM) data
records, engine and airframe system health and trend records and reports, and monitored
parameter tolerances and exception reports.
The Airbus Iridium SATCOM System provides a dedicated safety-services data channel
with the capability to send and receive standard ACARS messages between the aircraft’s
Air Traffic Service Unit (ATSU) and a safety-services certified terrestrial service provider.
AFIRS Antenna
(
Iridium and GPS
)
Satellite Data Unit
(SDU
)
To Aircraft Interfaces
Satellite Control
Module
(
SCM
)
RF
Data Acquisition and Power
Module
(
DAPM
)
Interconnects,
Conditioning
,
Monitoring
,
Power Supply
, Hold
-
Up
Circuitry
EEPROM
SIM Card
RF Mixer Module
(
RFMM)
GPS
Module
Iridium
Satellite Data
Modem
(
ISDM)
Voice Modem Interface
Module
(
VMIM
)
Iridium Satellite Voice
Modem (
ISVM
)
Modem Control and Interface
Module
(MCIM
)
System Control
,
Data and
Telephony Processing
, Data Storage
and Retrieval
, Communication
Control,
BIT
28
VDC Power
ARINC
573/
717
ARINC
429
Serial
Ethernet
Discrete
Audio
RF
Figure 2. Airbus Iridium SATCOM System Block Diagram
Description and Operation
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Jan. 21/14
23-28-01