4.13 CDL Flashcards
Describe CDL
High-bandwidth
IP-transport system
Used to transmit data and video
What types of video and data can be sent through CDL?
EO-IR
Radar
UAV video
FTP to and from
What does ATE stand for?
Airborne Terminal Equipment
What does AMA stand for?
Airborne modem assembly
What does RFE stand for?
Radio frequency equipment
How many RFE’s are a part of the CDL system?
Two
How many directional and omnidirectional antennas are part of the CDL system?
Two directional
One omni
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).
150 NM
44.73 Mbps
What is the function of the RFE’s?
Power amplifier
Receiver low-noise amplifier
Diplexer
What is the COMSEC equipment for the CDL system?
AMA embedded
KGV-135A
The ATE consists of which four components?
AMA
RFE
Directional antenna
Omnidirectional antenna
What is the function of the AMA?
Data processing
Embedded COMSEC
Conducts data processing, multiplexing, frequency
translation, RF switching, and embedded COMSEC.
-From ‘NATIP,’ page 559
What is the function of the RFE?
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
Note regarding CDL components
CDL components are located under the deck and are not accessible during flight.
Where is the AMA located?
Below deck
Near the soon chutes
What CDL component calculates directional antenna pointing angles? How?
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.
Where are the RFE’s located?
One for each directional antenna
Adjacent to the CDL antennas
(Just aft of the weapons bay)
To minimize transmission loss
What freq band does CDL operate in?
X and Ku
Where is the CDL omni antenna located?
Just aft of the weapons bay
Near the SLTs
What is the function of the am directional antenna?
The omnidirectional antenna is
used to broadcast information to multiple users
In general, how does the signal flow for CDL function?
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
Where can you find the CDL link TD?
COMM PEP
OCM
What does OCM stand for?
Off-board Communications Manager
What are the three BIT modes for CDL?
Power-on BIT (PBIT) Continuous BIT (CBIT) Initiated BIT (IBIT)
Note regarding IBIT on CDL
When the CDL is in a linked state, IBIT is not available.
What is PBIT?
Power-on BIT that initiates upon power up, reboot, or recycle greater than 10 milliseconds
What is CBIT?
Continuous BIT
BIT that runs during operation
What is IBIT?
User-initiated BIT
For fault isolation
