Garmin GNC 250 - Manual (Page 22)

UNIT
SETTINGS
CDI S ETTINGS — allows you to set the CDI scale to 0.3, 1.0 or 5.0 nm scale
or an automatic scale. The default setting is 5.0 nm.
M AG V AR /A RVL A LARM — allows you to select between true, auto or user-defined
magnetic variation options and set an arrival alarm for
waypoint arrival at a specified distance from a destination
waypoint. The default setting for magnetic variation is
‘auto’.
N EAREST A PT S EARCH — allows you to define the runway length and surface type
used in determining which nearest airports are displayed.
The default settings are ‘0 ft/mt’ for length and ‘any’ for
runway surface.
B ATTERY S AVER — allows you to specify a timeout interval for the GNC 250
display. The default setting is 30 seconds.
D ISPLAY I NTENSITY — allows you to manually adjust the brightness of the dis-
play. The default setting is for automatic brightness.
T RIP T IMER — provides a running clock on Nav Menu 2 that may be set
to run when power is on or when ground speed exceeds a
user-defined minimum.
U NITS OF M EASURE — allows you to select units of measure for various naviga-
tion and planning displays.
S PECIAL U SE A IRSPACE — allows you to turn specific controlled/restricted airspace
message alerts on or off. Turning message alerts off will
not prevent SUA information from being displayed on the
nearest SUA page.
M AP D ATUM — allows you to select or define the map datum used. The
default datum is WGS
‘84.
I/O C HANNEL 2— allows you to select input and output interface settings
and baud rate for channel 2. The default settings are ‘off’.
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