To set the minimum runway length and runway surface:
1. Press and hold
M
and use
O
to display the ‘Nearest apt search’ page.
2. Press
C
twice and use
K
and
O
to enter the minimum runway length upon which
your aircraft can land (up to 9999 units). Press
E
to accept the distance.
3. Rotate
K
to display the surface selection you desire. Choices include:
• any surface
• hard only surface
• soft/hard surface
• water only surface
4. Use
O
to select ‘ok?’ and press
E
to confirm.
The GNC 250XL’s
battery saver feature
can be programmed to automatically
turn off the backlighting when using the optional remote battery pack. This will
increase the remote battery life in the event of power failure. During this time, the
GNC 250XL will continue to navigate and track satellites, but will not backlight the
display until a key is pressed or a knob is turned.
To set the display timeout:
1. Press and hold
M
and rotate
O
to display the ‘Battery saver’ page.
2. Press
C
twice to activate the cursor.
3. Rotate
K
until the desired value is displayed (0, 30, 60 or 90 seconds). Entering 0 will
leave the display on at all times. Press
C
to finish.
The GNC 250XL features automatic contrast and backlighting control to adjust
the display for optimum viewing in any condition. This is done using a photocell at
the top left corner of the display bezel. It is important that this photocell not be cov-
ered to ensure proper display adjustment. You may also select manual control of the
display contrast and backlighting to tailor the GNC 250XL to your needs.
80
Display timeout settings. As shown, the display
backlight will turn off after 30 seconds to conserve
power in the optional battery pack.
SECTION
6
UNIT SETTINGS
Nearest Airport Search
Battery Saver
250xl manual 2 7/17/98 1:33 PM Page 80
