L3 Technologies AFIRS228S Manuale Utente
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 27
165E5733-00 Rev. 03
3.5.9 Microphone Input
Quantity
1
Format
Standard DO-214 Microphone Input
Dynamic Range
20 mV to 1.5 V RMS
Input Impedance
150 Ω ± 20%
Mic. Bias (No Load)
16 ± 0.5 V
Mic. Bias Ripple
<1 mV RMS in the 300 – 3400 Hz band
Sidetone
Provided by System to Interphone Output
Sidetone Level
Software Configurable
Audio Band Pass
300 – 3400 Hz
3.5.10 Iridium / GPS Antenna
Coaxial Cable Insertion
Loss (Max.)
Loss (Max.)
3 dB @ 1626.5 MHz
3.6 Maintenance Front Panel Ethernet Port (J2)
The Iridium SATCOM System SDU provides an RJ-45 Maintenance Port connector on the front panel,
which provides for Ethernet connection to Ground Service Equipment (GSE) e.g. a laptop or Personal
Computer with a standard web browser.
which provides for Ethernet connection to Ground Service Equipment (GSE) e.g. a laptop or Personal
Computer with a standard web browser.
3.7 SDU Configuration Module (SCM)
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.
all of the interfaces to other aircraft systems.
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