Garmin 255A manual Description, After making a selection, press ENT

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5.Turn the LARGE knob to select the waypoint Type.

6.Turn the SMALL knob to select the Type from the list.

Selected Wpt Type

Figure 2-4 Com User Frequency Type Selection

Frequency Type Symbol	Description

TWR	Tower
GND	Ground
ATIS	Automatic Terminal Information Service

AWS	Automated Weather Observing System
ATF	Aerodrome Traffic Frequency
ARR	Arrival

APPR	Approach
DEP	Departure
CLR	Clearance

CTAF	Common Traffic Advisory Frequency
FSS	Flight Service Station
RFS	Remote Flight Service Station

MF	Mandatory Frequency
UNI	Unicom

Blank	None

Table 2-1 - Com Frequency Type List

7. After making a selection, press ENT.

190-01182-01 Rev. A

Garmin GNC 255A/255B Pilot’s Guide

2-3

Image 19

Contents GNC 255A/255B November Limited Warranty 190-01182-01 Rev. a Iii Operation US Toll Free Canada Toll Free Product Registration and SupportRecord of Revisions Contents 2.2 2.12.3 Index Index-1 This page intentionally left blank Product Description Getting StartedNav Volume/ID Knob Power/Com Volume/Squelch KnobPilot Controls OBS Key Tuning LARGE/SMALL Concentric Cursor KnobsFLIP/FLOP Key 5 C/N Com/Nav KeyFunc Function Key USB PortMON Monitor Key Com Radio Power OnSelecting a Com Frequency Saving a Com Channel Monitoring the Standby Com ChannelAfter selecting the desired characters, press ENT After making a selection, press ENT DescriptionFrequency Database Reverse Look-Up Com Database Look-UpStuck Mic Emergency ChannelRemote Frequency Selection Control Selecting a Nav Frequency Nav RadioSaving a Nav Channel 01-36 Listening to the Nav Audio Channel14 CDI Display OBS Mode15 DST Data Display Distance/Speed/Time DST DisplayThis page intentionally left blank Functions Description FunctionsRecent Com Frequencies Com FrequenciesTurn the Small knob to select an Entry Press the CLR key to delete this User frequency Com User FrequenciesFrequencies. Press ENT Editing a Com User FrequencyCom Database Frequencies Com Database FrequenciesNearest APT function. Then, press ENT Com Nearest Airports APTTurn Small Knob To Scroll Through Available Frequencies Com Nearest Area Control Center ACC Frequencies13 Com Nearest FSS Frequencies Com Nearest Flight Service Station FSS Frequencies14 Com Nearest Weather Frequencies Com Nearest Weather WX FrequenciesRecent Nav Frequencies Nav FrequenciesPress the ENT key to delete the displayed frequency Nav User FrequenciesEditing a Nav User Frequency 21 Nav Database Frequencies Nav Database FrequenciesNav Nearest VOR When duplicate identifiers are found, press ENTFunctions display ICS ConfigurationAdjust Intercom Turn the Small knob to display the available VORsTurn the Small knob to turn the Aux Audio On or Off Aux AudioSpeaker On/Off function. Then, press ENT Intercom On/OffSpeaker On/Off Intercom On/Off function. Then, press the ENT keyCom Spacing System Configuration34 Set Display Brightness Display BrightnessDatabase Version function. Then, press the ENT key Display ContrastDatabase Info Display Contrast function. Then, press the ENT keyLoad Database function. Then, press the ENT key Load DatabasePress the Func key to return to the main menu Software VersionSerial Number Software Version function. Then, press the ENT keySetting Up the Count Down Timer TimersTo select a starting timer value Pressing ENT twice will stop the displayed Timer Setting Up the Count Up TimerViewing Timers in the Com Display Pressing CLR and then ENT will reset the displayed Timer48 Count Down Timer Value Now Counting Up This page intentionally left blank Appendix TroubleshootingCalibration error Recalibrate resolver It can be enabledOr disabled via a Remote mounted If in Lock Out modeUpdating the Frequency Database Messages Property with Power has been Re-apply power to the unitSwitch has been Verify glideslope deviationBeen in pressed All installationsInstallations Remote comNot communicating Nav radio is Contact dealer for serviceProperty with System This page intentionally left blank Index Remote frequency control 2-5 Reverse look-up 2-4 Revisions