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Flashcards in INMARSAT Deck (12)
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0
Q

How long does the test last after pressing the “test” button on the HSD-400?

A

Approximately 5 seconds

1
Q

Location & function of the HSD-400.

A
  • 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
2
Q

AMT-50 High Gain Antenna (HGA)

A

Transmits/receives to/from satellites

Two stepper motors control movement:
Motor B1= pitch
Motor B2= roll

3
Q

Location and function of the Antenna Control Unit (ACU).

A

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

4
Q

Diplexer/Low Noise Amplifier (DLNA).

A

RF interface between HSD-400 and antenna

Combines transmit and receive signals to and from the antenna

5
Q

Location and function of the Cisco 3270 Red Router.

A

Located in B3

Routes all unencrypted classified data from SBC-1 within the aircraft.

6
Q

Location and function of the KG-175D TACLANE - MICRO.

A

Located in C1

Encryption/decryption of all data transferred on the INMARSAT network.

Contains 3.6V AA battery

7
Q

Location and function of the M-168 Power Supply.

A

Located in C1

Converts 115VAC to 12VDC for KG-175D and the router CB on FECB.

8
Q

Location and function of the INMARSAT Monitoring Unit (IMU).

A

Located in D1

Used for BIT status reports of HSD-400
Contains 32GB hard rive
Can be controlled from NAVCOMM via INMARSAT control panel

9
Q

Location and function of the CNX-300 Mobile Access Router (Black Router)

A

Located in rack D1

Routes encrypted data from KG-175D to
HSD-400 for transmission over the net

10
Q

Location and function of the Avionics Busbox.

A

Located in D1

Provides ARINC 429 to HSD-400 for antenna positioning
Converts ARINC 575 data from INS-2 for AIMS auto-slew

11
Q

How long does the INMARSAT BIT last?

A

Approximately 5 seconds