Garmin GPSMAP 96 Pilot's Manual page 88

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Elevation" field below your flight path. You can
change the Caution Elevation from the default of 1000
ft to 750 ft or 500 ft. Obstacles below your currently
selected caution elevation threshold are shown in gray
(white).
Obstacle warnings are dependent upon the user
defined parameters on the Obstacle Data Setup. The
GPSMAP 96/96C evaluates obstacles, according to
the parameters set, within a proximately one mile
on either side of your projected flight path. Obstacle
warnings appear in either red with white lettering
(black with white lettering) indicating a red (dark
gray) obstacle is in range or black with white lettering
(white with black lettering) indicating a yellow (light
gray) obstacle. The obstacle warning remains on the
screen until the flight path has cleared the obstacle or
you have pressed Enter.
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Obstacle Warning
The GPSMAP 96/96C "Look Ahead Time" for
obstacles determines the maximum time frame when
an annunciation (a pop up window with tone) occurs.
The default setting is 120 Seconds, however you have
the option in the Obstacle Data Setup for 90 or 60
Seconds.
"Obstacle Alert Sensitivity" determines what level
of alerts are annunciated. The GPSMAP 96/96C
defaults to high sensitivity, which annunciate all red
(dark gray) and yellow (light gray) obstacles at the
look ahead time set. The Obstacle Data Setup allows
you the option of high, medium, or low. Medium
sensitivity annunciates all of the red (dark gray) and
96/96C Owner's Manual