L3 Technologies AFIRS228S User Manual
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 13
165E5733-00 Rev. 03
2.2 System Architecture
The Iridium SATCOM System consists of modular avionics components that can be tailored to meet
customer needs. The core system components are the Satellite Data Unit (SDU), the SDU
Configuration Module (SCM), and the Iridium Antenna (see Figure 2-2).
customer needs. The core system components are the Satellite Data Unit (SDU), the SDU
Configuration Module (SCM), and the Iridium Antenna (see Figure 2-2).
Figure 2-2 –Iridium SATCOM System Block Diagram
2.3 External System Interfaces
•
Audio System Interface (1)
•
ARINC 429 Transmitters (6) and Receivers (16)
•
Discrete Outputs (8) and Inputs (16)
•
Iridium Antenna (1)
•
User Media Interfaces – SIM (1), CF (1)
•
Maintenance Interfaces – Ethernet (1)
•
Ethernet Ports (4)
•
Voice Modem – Iridium 9523
•
Data Modem – Iridium 9602
Figure 2-3 illustrates the interfaces that the Iridium SATCOM System provides to external aircraft
systems or to the user.
systems or to the user.