TM 11-5840-281-12-1
4-34. DESCRIPTION OF MAINTENANCE CONTROLS, INDICATORS, AND SWITCHES. (CONT)
KEY
CONTROL OR INDICATOR
DESCRIPTION
1
LOCAL/REMOTE switch
Two-position switch, when placed in RT position, allows
control of receiver and antenna scan and polarization
functions from receiver-transmitter site. When in IND
position, functions controlled from control-indicator site.
2
XMTR LOCAUREMOTE
XMTR LOCAL indicator lights when LOCAUREMOTE switch
indicators
Is in RT position. XMTR REMOTE indicator lights when
LOCAUREMOTE switch is in IND position.
3
ANT PLZN switch
Two-position switch selects either circular or linear
polarization when in local mode of operation (LOCAL/
REMOTE switch in RT position).
4
DS5301 and DS5302 ANT
DS5301 indicator lights when circular mode of polariza-
PLZN indicators
tion is selected at receiver-transmitter or control-
indicator site. DS5302 indicator lights when linear
mode of polarization is selected.
5
SCAN MODE switch
Five-position switch selects any of five modes of antenna
scan operation when in local mode of operation.
FTC switch
Three-position switch selects linear (LIN) ftc or loga-
rithmic (LOG) ftc video In OFF position, ftc video output.
circuit is disabled and video is amplified linearly.
Ftc switch is used to break up video clutter while in
local mode of operation.
7
MONITOR meter
Monitors various BITE signals as selected by MONITOR
switch in local mode of operation.
8
MONITOR switch
Twenty-four position switch selects receiver-transmitter
low-voltage power supply and antenna data to be indi-
cated on MONITOR meter, when in local mode of
operation.
9
STC switch
In ON position, reduces receiver gain for radar targets
.
at close ranges. Used during local mode of operation.
10
EL TARGET control
Adjusts monopulse operation of receiver in local mode of
operation. When rotated clockwise, targets and ground
clutter become narrower in vertical plane on elevation
display.
11
IF GAIN control
Controls receiver gain for five types of antenna scan
operation while in local mode of operation.
12
ANT SERVO switch
Four-position switch controls azimuth antenna tilt and
elevation antenna servo position when in local mode.
4-129
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