TM 11-6660-266-13
Table 2-2. RDF Unit/CDU Operating Controls and Indicators
Index
Function
Nomenclature
No.
Display Unit
1
Displays operating screens and BIT test results.
ANT
Key is active only when the RDF Unit is in AUTO TRACK
2
CCW
OFF mode. Depressing the key actuates the azimuth servo
system to rotate the RDF antenna counterclockwise
(decrease azimuth angle) at the selected slew rate. Motion
continues as long as the key is depressed.
ANT
Key is active only when the RDF Unit is in AUTO TRACK
3
OFF mode. Depressing the key actuates the azimuth servo
CW
system to rotate the RDF antenna clockwise (increase
azimuth angle) at the selected slew rate. Motion continues
as long as the key is depressed.
Key alternately selects automatic or manual control of
4
AUTO
antenna movement.
TRACK
ON/OFF
Enables the antenna position indexing mode. After
5
SET
depressing the key, azimuth and elevation angle values
AZIM
corresponding to the actual antenna pointing positions are
ELEV
entered using the numeric keys. Indexing is normally done
with the antenna positioned at 0.0 elevation and pointing to
magnetic North or to a known hearing in azimuth.
Keys are used to enter numeric values of azimuth and
6
Numeric Keys
elevation position angle data and to select the type of BIT
test to be performed.
When in the antenna position indexing mode, depressing the
7
ENTER
------
key enters the current displayed values of azimuth and
elevation as reference values for the current pointing position
FLIGHT
of the antenna. During other operations, depressing this key
resets the flight reference time to zero.
Provides for direct connection of the CDU to the RDF Unit.
8
Input/Output Connector
2-7
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