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3-15190-01182-01 Rev. A
Garmin GNC 255A/255B Pilot’s Guide
2. Turn the SMALL knob to display the available VORs.
3. Press the ENT key to accept the displayed VOR and set it as
the Standby frequency. Or, press the CLR key to return to the
Functions display.
3.4 ICS Configuration
The Internal Communications System (ICS) Configuration allows you to
adjust the intercom, set the Nav/Aux volume, turn the Intercom On/Off, and
turn the intercom speaker On/Off.
3.4.1 Adjust Intercom
The Adjust Intercom function allows you to set values for the Intercom
squelch and volume. The Intercom On/Off function must be set to On to make
the Adjust Intercom function available.
1. Press FUNC to access the Functions. Turn the LARGE knob
to select the ICS Function. Turn the SMALL knob to view the
Adjust Intercom function. Then, press the ENT key.
Figure 3-27 Select the Adjust Intercom Function
2. Turn the SMALL knob to set the ICS Squelch value. Then, press
the ENT key.
Turn Small Knob To Adjust Intercom Squelch
Press the ENT Key to Save
the Displayed Value
Press the CLR Key To Revert
to the Previous Value
Turn LARGE And Then
SMALL Knob To Adjust
Intercom Volume
Figure 3-28 Adjust the Intercom Values
3. Turn the LARGE knob to select the ICS Squelch or Volume.
Turn the SMALL knob to set the value. Then, press the ENT
key to save the selected values.