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Section 6
Messages and Unit Settings
The GNC 250’s MSG key provides access to system messages and allows you to cus-
tomize your GPSCOM to your own preferences through a settings submenu. Whenever
the GNC 250 needs to alert you to a navigation, communication or system message, the
annunciator light next to the
M
key will flash. Some messages are advisory in nature
(e.g., the arrival and countdown alarms), while others may require your immediate atten-
tion (e.g., a stuck microphone message). For a complete list of GNC 250 messages,
please see Appendix D.
To view a message, press
M
. Press
M
again to return to the previous page.
The GNC 250’s settings submenu is also accessed from the MSG key.
To view the settings submenu, press and hold
M
for more than 2 seconds.
Once the settings submenu has been accessed, the following setup pages are available
by rotating
O
with the flashing cursor inactive:
• CDI scale settings • Mag. var./arrival alarm settings
• Nearest airport search • Battery saver
• Display intensity settings • Trip timer settings
• Navigation units • SUA settings
• Map datums • I/O Settings (channel 2 only)
The first available page under the settings submenu is the CDI settings page, which
allows you to define the scale of the GNC 250’s course deviation indicator.
71
APPENDIX C
Installation,
Removal &
To access the settings submenu pages, press and
hold the MSG key for two seconds. The GNC 250
will return to the last submenu viewed the next
time you access the unit settings.
To view a message, press MSG.
SECTION
6
UNIT SETTINGS
Messages &
Settings Submenus
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