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3-18
Garmin GNC 255A/255B Pilot’s Guide
190-01182-01 Rev. A
3.5 System Configuration
The System Configuration function will show the Software Version, Database
Info, and Serial Number as well as, allowing you to set values for the Com
spacing, Display Brightness, and Display Contrast, and use the Load Database
feature to update databases.
3.5.1 Com Spacing
Com spacing may be selected between 8.33 kHz and 25 kHz to allow for
regional requirements.
NOTE: When switching from 8.33 kHz to 25 kHz mode, any 8.33 kHz-
specific user frequencies will be deleted from the user frequency list. This
only affects the user frequencies within the 8.33 kHz spectrum.
1. Press FUNC to access the Functions. Turn the LARGE knob
to select the SYS Function. Turn the SMALL knob to view the
Com spacing function. Then, press the ENT key.
Press ENT to Accept
the Selected Value
Turn the SMALL Knob to
Select the Channel Spacing
Press CLR to Return to
the Previous Value
Figure 3-33 Com Spacing Display
2. Turn the SMALL knob to set the Com spacing and then press
the ENT key.