C3I (UHF3)

Question 0

ODS port 5

Answer 0

Sends Matt and mini dama tuning commands to the antenna combiner

Question 1

ODS port 1

Answer 1

• Interfaces with DCMS and CARP
• Allows online control if the mini dama
• routes status reports between ODS, MATT, and antenna combiner

Question 2

ODS PORT 9

Answer 2

Used for MATT download and TDIMF format MATT TRACKS.

Question 3

Function of the SATCOM preamp/diplexers

Answer 3

XMIT: receives MINI DAMA signal from RF antenna switch and sends it to antenna.

RCV: receives incoming signal from antenna, amplifies it and send is to the antenna combiner.

Question 4

Is the RF antenna switch used for SATCOM transmission or reception?

Answer 4

Transmission

Question 5

The antenna combiner contains how many channels?

Answer 5

4 channels

A, B, C, D

Question 6

Which antenna combiner channel is for MINI DAMA?

Answer 6

Channel A

Question 7

Function of the antenna combiner.

Answer 7

RCV: simultaneously receives from all four antennas, combines the signal to create 5db SnR and determines best antenna for transmission
XMIT: routes antenna selection and transmission to RF antenna switch

Question 8

Which card in the antenna combiner determines the best antenna by sampling reception signals or by receiving operator entered antenna selection commands from the ODS.

Answer 8

Digital Signal Processor

DSP

Question 9

When the antenna combiner BIT is initiated the BIT indicator light does what?

Answer 9

Illuminates steady for 10 seconds then flashes for 10 seconds.

Question 10

Antenna combiner “OP INIT” pushbutton.

Answer 10

When depressed initializes combiner for normal operations.

Question 11

The antenna combiner thermal fault indicator illuminates yellow when…

Answer 11

Combiner power supply overheat condition occurs.

Question 12

If the thermal override switch on the antenna combiner is not actuated within _______ of an overheat condition, the power supply with shut down.

Answer 12

60 seconds

Question 13

What is a visual indication of a completed BIT of the antenna combiner?

Answer 13

The active antenna lights will cycle.

Question 14

The antenna combiner switch on the TACCO power control panel applies/removes power to what?

Answer 14

Antenna combiner

Preamp/diplexers

Question 15

Regarding the MINI DAMA this card allows for the encryption and decryption of TDMA/DAMA Orderwires.

Answer 15

KGV-11 TRANSEC card

Question 16

The PA overtemp indicator on the MINI DAMA power amplifier is…

Answer 16

Not used

Question 17

Function of the MINI DAMA Power Amplifier.

Answer 17

Amplifies transmission signals developed by the Modem R/T.

Output is 100 watts or 20dB

Question 18

System Critical message

Answer 18

Indicates equipment failure.

Question 19

How many systems critical messages can be stored at one time?

Answer 19

Eight

Question 20

Mode critical message.

Answer 20

Normally indicates equipment configuration change.

Question 21

What is the uplink frequency range?

Answer 21

292 - 318 MHz

Question 22

What is the downlink frequency range?

Answer 22

243 - 270 MHz

Question 23

What is TDMA

Answer 23

Time Division Multiple Access

-Method of multiplexing data streams to allow multiple users access to the same satellite channel.

Question 24

What is DAMA?

Answer 24

Demand Assigned Multiple Access - Uses TDMA to have multiple users on one channel - Allows users to give the channel during periods of inactivity - Authorized users are allowed satellite access on demand

Question 25

At what temperature will the "HIGH TEMP" indicator on the MATT illuminate?

Answer 25

160*F

Question 26

What is the difference between the MATT blocks?

Answer 26

The cryptographic cards used to decrypt incoming broadcasts.

Question 27

What is the required SNR for reliable imagery transmission?

Answer 27

52 dB

Question 28

What is the required SNR for reliable voice transmission?

Answer 28

47 dB

Question 29

What does OASIS stand for?

Answer 29

Over the horizon Airborne Sensor Information System

Question 30

Where is the UHF-3 cone of silence?

Answer 30

Extends 30 degrees on either side of the aircraft nose.

Question 31

Caution associated with the antenna combiner

Answer 31

The thermal override switch should only be used in emergencies, continued use in overtemp condition will damage to the unit.

Question 32

What two signals does MATT receive from the antenna combiner?

Answer 32

Channel B, and C/D summed

Question 33

How long does a BIT halt the signal processing inside the ate combiner?

Answer 33

15 seconds

Question 34

How long does initialization halt signal processing in the antenna combiner?

Answer 34

1 minute

Question 35

General description of the Mini-DAMA system.

Answer 35

- SATCOM system that supports exchange of secure battle group coordination data, imagery, and voice. - Works on TDMA or non-TDMA - 25k and 5k

Question 36

How many I/O ports does the Mini-DAMA MODEM have? What are they used for?

Answer 36

-8 ports -4 I/O ports are accessible -Three are configured: Port 1. KG-84A #1(imagery) Port 2. UHF-3 ANDVT(voice) Port 3. KG-84A #2(OTCIXS)

Question 37

Function of the KGV-11 TSEC

Answer 37

Encryption and decryption of TDMA order wires.

Question 38

What is the difference between 5k and 25k?

Answer 38

- Both capable of transmitting data and voice | - 25k has more time slots, bandwidth, and user capability

Question 39

MATT block 1 uses what type of cards for data decryption?

Answer 39

IBS-S: KGV-25 | IBS-I: KGV-26

Question 40

MATT block 2 uses what type of cards for data decryption?

Answer 40

IBS-S: KGV-113 | IBS-I: KGV-26

Question 41

MATT block 3 uses what type of cards for data decryption?

Answer 41

IBS-S: KGV-113 | IBS-I: KGV-26A

Question 42

How long does it take to download MATT software from the TDP?

Answer 42

10-15 minutes

Question 43

If the TDP is not installed or the and/or the ethernet lines are terminated and not jumped what systems will be lost?

Answer 43

No online control of AIMS or ALR-95

Question 44

Do both drives have to be loaded to operate the TDP?

Answer 44

No, the ODS will work without the IP drive.

Question 45

GFCP

Answer 45

Performs interface between the DCMS, MATT, CARP, AND ODS.

Question 46

CARP

Answer 46

Receives ISAR track data and GPS time and ownership updates.

Question 47

What happens when the OP INIT push button on the combiner is pressed?

Answer 47

Initializes the combiner for normal operations - internal calibration is done to compensate for various paths in side the combiner and stores results in the non volatile memory. - status message is sent to the TDP.