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viii
Garmin GNC 255A/255B Pilot’s Guide
190-01182-01 Rev. A
3 Functions ..............................................................................................3-1
3.1 Functions Description ...........................................................................3-1
3.2 Com Frequencies .................................................................................3-2
3.2.1 Recent Com Frequencies ........................................................3-2
3.2.2 Com User Frequencies ...........................................................3-3
3.2.2.1 Viewing the Com User Frequency ...........................................3-3
3.2.2.2 Deleting the Com User Frequency ..........................................3-3
3.2.2.3 Editing a Com User Frequency ...............................................3-4
3.2.3 Com Database Frequencies ....................................................3-5
3.2.4 Com Nearest Airports (APT) ...................................................3-6
3.2.5 Com Nearest Area Control Center (ACC) Frequencies .............3-7
3.2.6 Com Nearest Flight Service Station (FSS) Frequencies .............3-8
3.2.7 Com Nearest Weather (WX) Frequencies ................................3-9
3.3 Nav Frequencies ................................................................................3-10
3.3.1 Recent Nav Frequencies .......................................................3-10
3.3.2 Nav User Frequencies ..........................................................3-11
3.3.2.1 Viewing the Nav User Frequency ..........................................3-11
3.3.2.2 Deleting the Nav User Frequency .........................................3-11
3.3.2.3 Editing a Nav User Frequency ..............................................3-12
3.3.3 Nav Database Frequencies ...................................................3-13
3.3.4 Nav Nearest VOR .................................................................3-14
3.4 ICS Configuration ..............................................................................3-15
3.4.1 Adjust Intercom ...................................................................3-15
3.4.2 Aux Audio ........................................................................... 3-16
3.4.3 Intercom On/Off ..................................................................3-17
3.4.4 Speaker On/Off ....................................................................3-17
3.5 System Configuration .........................................................................3-18
3.5.1 Com Spacing .......................................................................3-18
3.5.2 Display Brightness ............................................................... 3-19
3.5.3 Display Contrast .................................................................. 3-20
3.5.4 Database Info ......................................................................3-20
3.5.5 Load Database ....................................................................3-21
3.5.6 Software Version .................................................................3-22
3.5.7 Serial Number .....................................................................3-22
3.6 Timers ...............................................................................................3-23
3.6.1 Setting Up the Count Down Timer ........................................3-23
3.6.2 Setting Up the Count Up Timer ............................................3-24