User Manual
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014 L-3 Aviation Recorders Proprietary Page 14
165E5733-00 Rev. 03
Figure 2-3 –Iridium SATCOM System External Interfaces NEED EFB GRAPHIC
• Audio System Interface (1)
This interface consists of a Microphone Input to the SDU and an Interphone Output from the SDU
to connect to a standard (DO-214) Audio Integrating System (e.g. Audio Panel) in the aircraft.
• ARINC 429 Transmitters (6) and Receivers (16)
These interfaces can be software-configured to connect to various aircraft systems to support both
the display and control functions of the Iridium SATCOM System. Typical interfaced systems
include MCDUs, ACARS ATSUs, etc.
• Maintenance Front Panel Ethernet Port J2 (1)
An RJ45 jack on the front panel provides Maintenance Port access using an Ethernet connection.
• Rear Ethernet Ports (4)
These interfaces can be used to connect to several different systems. Typical interfaced
systems include EFB, etc.One of these ports can also be used to provide a remote maintenance
port interface (e.g. in the flight compartment).
Formatted: No underline, Font color: Auto