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 vary by as much 5
nautical miles if strong local interference is
Verify that a 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.
To restart the test, switch to LX mode
and back to CLR/TST mode.