L3 Technologies AFIRS228S User Manual
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 46
165E5733-00 Rev. 03
The Mic On and Call Light functions are used in conjunction with the Extension 1 audio interface and
are discussed in Section 6.11.1.1 below.
are discussed in Section 6.11.1.1 below.
•
Discrete input no. 1 (Din 1) is dedicated as a LGCIU input.
•
Only discrete inputs Din 2 through Din 15 are software-configurable.
•
Discrete input no. 16 (Din 16) is dedicated as “aircraft on ground” (LGCIU HPP).
None
When an input is not connected to an active system (e.g. no connection, or wiring provisions
only are installed), configure the input as “None.”
only are installed), configure the input as “None.”
System Reset
The System Reset discrete input, when configured, will reset the system only after an inactive
to active transition. The system will reset only once even if the discrete input is left active. The
System Reset function is independent of the “In-Air” or “On-Ground” status of the aircraft.
to active transition. The system will reset only once even if the discrete input is left active. The
System Reset function is independent of the “In-Air” or “On-Ground” status of the aircraft.
Landing Gear Control Interface Unit 2 (LGCIU2)
A second Landing Gear Control Interface Unit input may optionally be provided to the AFIRS
system. Refer to Section 6.9.1 for the logic used when a LGCIU2 input is provided.
system. Refer to Section 6.9.1 for the logic used when a LGCIU2 input is provided.
Figure 6-6 – Discrete Input Interfaces