TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(a)
Range switches (radar control panel) -
Select range of 50 miles or greater.
(b)
Lighting sensor system (LSS) mode
selector switch (radar control panel) -
CLR/TST. Verify that all lightning rate
symbols are erased from display.
NOTE
After 3 or 4 seconds, simulated lightning test pulses
are sent to the display.
(c)
Verify that a rate symbol is display at 25
nautical miles, at 45 degrees to right of
center. This symbol will take approxi-
mately 5 to 7 seconds to build up.
NOTE
This time will be extended to approximately 15
seconds if TST is selected immediately from OFF,
due to lightning processor initialization.
The symbol’s range may very bay as much 5
nautical miles if strong local interference is present.
(d)
Verify
that
magenta
lightning
alert
symbol
is
displayed
at
maximum
selected range, at 45 degrees right of
center. This must remain on display for
3 to 7 seconds.
(e)
To restart the test, switch to LX mode
and back to CLR/TST mode.
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