INMARSAT Flashcards
How long does the test last after pressing the “test” button on the HSD-400?
Approximately 5 seconds
Location & function of the HSD-400.
- Located underneath NAVCOMM console
- interfaces with the antenna system to provide a communications link with the INMARSAT Network.
- Software Config. Module contains two SIM cards…
1: channel 1
2: channel 3
AMT-50 High Gain Antenna (HGA)
Transmits/receives to/from satellites
Two stepper motors control movement:
Motor B1= pitch
Motor B2= roll
Location and function of the Antenna Control Unit (ACU).
Located in D1 above Black Router
Provides interface between HGA and HSD-400
Power and control signals to HGA and D/LNA
BIT capability over entire antenna system
Diplexer/Low Noise Amplifier (DLNA).
RF interface between HSD-400 and antenna
Combines transmit and receive signals to and from the antenna
Location and function of the Cisco 3270 Red Router.
Located in B3
Routes all unencrypted classified data from SBC-1 within the aircraft.
Location and function of the KG-175D TACLANE - MICRO.
Located in C1
Encryption/decryption of all data transferred on the INMARSAT network.
Contains 3.6V AA battery
Location and function of the M-168 Power Supply.
Located in C1
Converts 115VAC to 12VDC for KG-175D and the router CB on FECB.
Location and function of the INMARSAT Monitoring Unit (IMU).
Located in D1
Used for BIT status reports of HSD-400
Contains 32GB hard rive
Can be controlled from NAVCOMM via INMARSAT control panel
Location and function of the CNX-300 Mobile Access Router (Black Router)
Located in rack D1
Routes encrypted data from KG-175D to
HSD-400 for transmission over the net
Location and function of the Avionics Busbox.
Located in D1
Provides ARINC 429 to HSD-400 for antenna positioning
Converts ARINC 575 data from INS-2 for AIMS auto-slew
How long does the INMARSAT BIT last?
Approximately 5 seconds
