L3 Technologies AFIRS228S0 Manual Do Utilizador
AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
AIRBUS IRIDIUM SATCOM SYSTEM
2. SYSTEM ARCHITECTURE
The Airbus Iridium SATCOM System consists of three Line Replaceable Units (LRUs). The
core system components are the Satellite Data Unit (SDU), the SDU Configuration Module
(SCM), the Iridium Antenna, and Coaxial Antenna Cable assembly. Optional components
include Cabin Handset(s) (Wired or Cordless).
core system components are the Satellite Data Unit (SDU), the SDU Configuration Module
(SCM), the Iridium Antenna, and Coaxial Antenna Cable assembly. Optional components
include Cabin Handset(s) (Wired or Cordless).
A. SATELLITE DATA UNIT (SDU)
Refer to Figure 3. The SDU is an ARINC 600 2MCU electronic enclosure that resides
in the aircraft’s equipment rack. It contains the system intelligence and interface
circuitry for connecting to the various aircraft systems. The SDU also contains Iridium
voice and data modem(s), as well as a GPS receiver.
in the aircraft’s equipment rack. It contains the system intelligence and interface
circuitry for connecting to the various aircraft systems. The SDU also contains Iridium
voice and data modem(s), as well as a GPS receiver.
Figure 3. Satellite Data Unit (SDU) Assembly Drawing
Part Number: 228E5733-00
Description and Operation
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Jan. 21/14
23-28-01