TM 11-5840-208-30-1
(3)
Set the indicator RANGE SELECTOR switch to the 15000 M position.
(4)
Turn the MARKERS switch to ON.
(5)
Tune the echo box until a peak reading is obtained on the relative power meter.
(6)
Rotate the EXPANDED SWEEP DELAY switch until the bright band covers the area where the noise on
the B-scope starts to build up.
(7)
Set the RANGE SELECTOR switch to the 3750 M position.
(8)
Adjust the IF GAIN control for maximum ringtime display.
(9)
Using the LOWER BEAM RANGE control, place the range strobe over the point where the noise starts
to build up.
(10) Read the RANGE counter to obtain the ringtime distance.
(11) Record the ringtime distance, the relative power, and the transmitted frequency of the radar. The
minimum acceptable ring-time is 1, 200 meters.
(12) Detune the echo box.
(13) Return the RANGE SELECTOR switch to the 15000 M position.
2-6.
NORMAL STOPPING PROCEDURE
a. Turn the magnetron power variac fully counterclockwise, then press the STOP button on the control-power
supply panel to turn the transmitter off.
b.
Elevate the antenna to +175 mils.
c. To completely stop the radar set, turn the MAIN POWER switch to the OFF position. The READY indicator
lamp and MAIN POWER ON & INTLK CLOSED indicator lamp will go out.
d. To stop the power unit, hold the POWER UNIT switch in the STOP position until the engine completely stops.
The POWER UNIT indicator lamp will go out.
Note: Place AFC/MAN switch (on the control indicator in the MANUAL position.
2-7.
EMERGENCY STOPPING PROCEDURE
To stop the equipment in case of emergency, turn the MAIN POWER switch to OFF and hold the POWER UNIT
switch to STOP until the engine stops. These two actions cut off all power to the radar.
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