BendixKing KXP 756 - Manual (Page 42)

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fade faster on low sensitivity. The
marker audio may now be turned off
to obtain the exact time of center
passage from the light only, since the
imminence of station passage has
already been indicated. This
suggestion is especially appropriate if
the pilot is involved in radio
communication with approach control
or tower at that moment.
The Test Function of the KMR
675 performs a functional check of the
panel mounted marker lamps as well
as the tone amplifiers, lamp circuitry
and audio circuitry of the remote
receiver. To initiate the test function,
place the sensitivity/test switch in the
test position. All marker lamps should
be illuminated and an 800Hz audio
tone should be present. Placing the
sensitivity/test switch in either Hi or Lo
sensitivity should end the test function.
If the sensitivity/ test switch remains in
test position for longer than two or
three seconds, the test function will
automatically end.
The automatic dimming feature of the
KMR 675 senses the amount of
ambient light in the aircraft and adjusts
the brightness of the marker panel
lamps. In high ambient light
conditions (direct sunlight) the marker
panel lamps will be much brighter than
in low ambient light conditions.