User's Manual

Airbus Iridium SATCOM System
165E5733-00 L-3 Aviation Recorders Proprietary
Issue, Rev. 02
21 January 2014
Page 18
Figure 2-3 – Airbus Iridium SATCOM System External Interfaces
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.
Software selectable discrete inputs and outputs can be configured to support this interface (e.g.
Mic On, Chime, Chime Reset, End Call functions).
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 Airbus Iridium SATCOM System. Typical interfaced
systems include MCDUs, ACARS ATSUs, Airbus Centralized Fault Display Systems (CFDS), etc.