TM 11-5840-217-34-1
3-3. OVERALL SYSTEMS CHECKS
Refer
Check
to
Correct results
page
number
Action to be taken
1.
Set the ON-OFF switch S1801
a. Power supply pilot light will come on.
to ON.
b. Line voltage meter M1001 will read red
line.
c. All cabinet blower motors will operate.
2.
Turn the ELEVATION hand-
a. The ELEVATION WARNING light will
wheel to its clockwise (cw)
come on when the antenna approaches
and counterclockwise (ccw)
its upper or lower limit and will go out
limits.
when the antenna is moved away from
the limit.
b
The ELEVATION counter will indicate
the antenna elevation.
c.
The RANGE counter will move when the
ELEVATION handwheel is moved from
its cw to ccw limits.
3.
Turn the AZIMUTH handwheel
a. The AZIMUTH WARNING light will come
to its cw and ccw limits.
on when the antenna reaches an azimuth
limit and will go out when the antenna is
moved away from the limit.
b. The AZIMUTH counter will move cw or
ccw, depending on the direction in which
the AZIMUTH handwheel is turned.
c. The plotting board arm will move through
3, 200 mils (only if arm is engaged).
4.
Turn the RANGE handwheel
a. The RANGE counter will move from the
from its ccw limit to its cw
minimum range to the maximum range.
limit.
b. The X and Y counters will move.
5.
Make the following coordinates
a. The X counter will indicate the easting
checks: Set the AZIMUTH
coordinate of the radar site.
counter to 0, the ELEVATION
b. The Y counter will indicate the northing
counter to 0, and the RANGE
coordinate of the radar site plus 5, 000
counter to 5000.
meters.
a. The X counter will indicate the easting
Set the AZIMUTH counter to
coordinate of the radar site plus 5, 000
1, 600 mils, the ELEVATION
meters.
counter to 0, and the RANGE
b. The Y counter will indicate the northing
counter to 5000.
coordinate of the radar site.
6.
Press the RADIATE switch
a. The RADIATE light will come on and
to the ON position and
stay on.
release the switch.
b. Sweep will be present on the A-scope.
c. Range gate and video will be present on
the A-scope sweep.
(Note: For intermediate video or no
video, refer to page 34. )
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