4.13 CDL

Question 1

Describe CDL

Answer 1

High-bandwidth
IP-transport system
Used to transmit data and video

Question 2

What types of video and data can be sent through CDL?

Answer 2

EO-IR
Radar
UAV video
FTP to and from

Question 3

What does ATE stand for?

Answer 3

Airborne Terminal Equipment

Question 4

What does AMA stand for?

Answer 4

Airborne modem assembly

Question 5

What does RFE stand for?

Answer 5

Radio frequency equipment

Question 6

How many RFE’s are a part of the CDL system?

Answer 6

Two

Question 7

How many directional and omnidirectional antennas are part of the CDL system?

Answer 7

Two directional

One omni

Question 8

This point-to-point data link supports line-of-sight connectivity at a range of up to ____ nm and a data rate up to ______ Mbps (Table 4-38).

Answer 8

150 NM

44.73 Mbps

Question 9

What is the function of the RFE’s?

Answer 9

Power amplifier
Receiver low-noise amplifier
Diplexer

Question 10

What is the COMSEC equipment for the CDL system?

Answer 10

AMA embedded

KGV-135A

Question 11

The ATE consists of which four components?

Answer 11

AMA
RFE
Directional antenna
Omnidirectional antenna

Question 12

What is the function of the AMA?

Answer 12

Data processing
Embedded COMSEC

Conducts data processing, multiplexing, frequency
translation, RF switching, and embedded COMSEC.
-From ‘NATIP,’ page 559

Question 13

What is the function of the RFE?

Answer 13

Power amplifier

Consists of a switchable diplexer, 70 watt microwave power module transmit power amplifier, receive link low-noise amplifier, and a command and status assembly. There are two RFE assemblies in the CDL subsystem

Question 14

Note regarding CDL components

Answer 14

CDL components are located under the deck and are not accessible during flight.

Question 15

Where is the AMA located?

Answer 15

Below deck

Near the soon chutes

Question 16

What CDL component calculates directional antenna pointing angles? How?

Answer 16

The AMA calculates directional antenna pointing angles to known target locations.

The AMA selects the active antenna based on aircraft inertial reference with respect to the remote link location information.

Question 17

Where are the RFE’s located?

Answer 17

One for each directional antenna
Adjacent to the CDL antennas
(Just aft of the weapons bay)
To minimize transmission loss

Question 18

What freq band does CDL operate in?

Answer 18

X and Ku

Question 19

Where is the CDL omni antenna located?

Answer 19

Just aft of the weapons bay

Near the SLTs

Question 20

What is the function of the am directional antenna?

Answer 20

The omnidirectional antenna is

used to broadcast information to multiple users

Question 21

In general, how does the signal flow for CDL function?

Answer 21

Signal is received at one of the three antennas
Two directional, one omni
Signal is amplified at the RFE’s
There are two RFE’s
located adjacent to each directional antenna
Signal is then sent to the AMA
Where it is encrypted/decrypted and processed

Question 22

Where can you find the CDL link TD?

Answer 22

COMM PEP

OCM

Question 23

What does OCM stand for?

Answer 23

Off-board Communications Manager

Question 24

What are the three BIT modes for CDL?

Answer 24

Power-on BIT (PBIT)
Continuous BIT (CBIT)
Initiated BIT (IBIT)

Question 25

Note regarding IBIT on CDL

Answer 25

When the CDL is in a linked state, IBIT is not available.

Question 26

What is PBIT?

Answer 26

Power-on BIT that initiates upon power up, reboot, or recycle greater than 10 milliseconds

Question 27

What is CBIT?

Answer 27

Continuous BIT

BIT that runs during operation

Question 28

What is IBIT?

Answer 28

User-initiated BIT

For fault isolation