TM 11-5840-281-12-1
4-47.
PERFORMANCE TESTS. (CONT)
LOCAL CONTROL MONITOR TEST (CONT)
CONTROL SETTINGS
TEST PROCEDURE
INDICATION
On local control monitor,
Connect negative lead of
MONITOR meter and multi-
place SCAN MODE switch to
multimeter to GND J5304 and
meter indicate O vdc. If
NORM position. Place MONITOR
connect positive lead to
indications aro not correct,
switch to AZ-EL RLY GATE
VOLTAGE MON J5303. Manually
refer to higher category of
position. Set up multimeter
position elevation antenna
maintenance.
to measure + 50 vdc.
to top of scan (25 degrees).
Manually rotate azimuth an-
tenna counterclockwise from
- 15 degrees to + 15 degrees,
as indicated on azimuth scan
protractor, and observe meter
indications.
Same as above.
Manually position azimuth
MONITOR meter and multi-
antenna to zero degrees
meter indicate + 28 + 1 vdc.
as indicated on azimuth
If indications are incorrect,
scan protractor. Attach
refer to higher category of
clinometer to elevation
maintenance.
antenna clinometer mount,
Clinometer Installation
antenna from - 1 to 10 degrees,
as indicated on clinometer
and meter indications.
Place MONITOR switch to AZ-EL
Manually position elevation
MONITOR meter and multi-
UNBLK position. Set up multi-
antenna to the top of scan
meter indicate + 8 vdc. If
meter to read + 10 vdc.
(25 degrees). Rotate azimuth
indications are incorrect,
antenna counterclockwise to
refer to higher category of
maintenance
+ 20 degrees as indicated on.
azimuth scan protractor.
Place MONITOR switch to - 10
Connect negative lead of
MONITOR meter and multi-
AZ TILT position. Set up
multimeter to VOLTAGE MON
meter indicate - 1 + 0.5
multimeter to read - 5 vdc.
J5303 and connect positive
vdc. If indications are incor-
lead to GND J5304. On local
rect, refer to higher category
control monitor, ensure SCAN
of maintenance.
switch is in OFF position and
place MAIN POWER switch to
ON position. Use ANT SERVO
control and tilt azimuth an-
tenna to lower limit of - 1
degree.
4-146
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