Airbus
Iridium
SATCOM
System
L
‐
3
Aviation
Recorders
Proprietary
165E5733
‐
01
Rev.
02
7
March
2014
Page
3
Satellite
Data
Unit
(SDU)
2.
SDU
Configuration
Module
(SCM)
The
SCM
is
housed
in
a
small
enclosure,
which
is
designed
to
be
mounted
within
24”
of
the
SDU
rear
connector.
The
SCM
and
antenna
connect
directly
to
the
SDU.
The
SDU
is
the
heart
of
the
system
and
provides
all
of
the
interfaces
to
other
aircraft
systems.
