Tuning LARGE/SMALL Concentric Cursor Knobs, OBS Key | Garmin 255A

1.2.3Tuning LARGE/SMALL Concentric (Cursor) Knobs

The LARGE right and SMALL right knobs are used for tuning frequencies and data entry.

LARGE, Outer Knob				SMALL, Inner Knob

1.2.4FLIP/FLOP Key

Press and release the FLIP/FLOP key to switch between the active (left-most) and standby (right-most) frequency. Switching between Com frequencies is disabled while you are transmitting.

1.2.5C/N (Com/Nav) Key

Press the C/N key to select the Com or Nav (VLOC) radio mode.

1.2.6OBS Key

Press the OBS key to see the current OBS setting and graphic CDI. The OBS page will be disabled if the unit is installed with an external converter.

1.2.7T/F (To/From) Key

Press the T/F key to toggle between the bearing TO or radial FROM the active VOR. The T/F page also shows Distance/Speed/ Time information. The T/F key does not operate for Localizer frequencies.

1.2.8CLR (Clear) Key

Pressing the CLR key erases information, cancels entries, and resets timers.

1.2.9ENT (Enter) Key

Press the ENT key to save selected values, to confirm a prompt, or to save the Standby frequency.

190-01182-01 Rev. A

Garmin GNC 255A/255B Pilot’s Guide

1-3

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Garmin 255A manual Tuning LARGE/SMALL Concentric Cursor Knobs, FLIP/FLOP Key, 5 C/N Com/Nav Key, OBS Key, 7 T/F To/From Key

Contents

GNC 255A/255B November Limited Warranty 190-01182-01 Rev. a Iii Operation US Toll Free Canada Toll Free Product Registration and Support Record of Revisions Contents 2.1 2.22.3 Index Index-1 This page intentionally left blank Product Description Getting Started Power/Com Volume/Squelch Knob Nav Volume/ID KnobPilot Controls OBS Key Tuning LARGE/SMALL Concentric Cursor KnobsFLIP/FLOP Key 5 C/N Com/Nav Key USB Port Func Function KeyMON Monitor Key Power On Com RadioSelecting a Com Frequency Monitoring the Standby Com Channel Saving a Com ChannelAfter selecting the desired characters, press ENT After making a selection, press ENT Description Frequency Database Reverse Look-Up Com Database Look-Up Emergency Channel Stuck MicRemote Frequency Selection Control Nav Radio Selecting a Nav FrequencySaving a Nav Channel 01-36 Listening to the Nav Audio Channel 14 CDI Display OBS Mode 15 DST Data Display Distance/Speed/Time DST Display This page intentionally left blank Functions Description Functions Com Frequencies Recent Com FrequenciesTurn the Small knob to select an Entry Press the CLR key to delete this User frequency Com User Frequencies Frequencies. Press ENT Editing a Com User Frequency Com Database Frequencies Com Database Frequencies Nearest APT function. Then, press ENT Com Nearest Airports APT Turn Small Knob To Scroll Through Available Frequencies Com Nearest Area Control Center ACC Frequencies 13 Com Nearest FSS Frequencies Com Nearest Flight Service Station FSS Frequencies 14 Com Nearest Weather Frequencies Com Nearest Weather WX Frequencies Recent Nav Frequencies Nav Frequencies Press the ENT key to delete the displayed frequency Nav User Frequencies Editing a Nav User Frequency 21 Nav Database Frequencies Nav Database Frequencies Nav Nearest VOR When duplicate identifiers are found, press ENT Functions display ICS ConfigurationAdjust Intercom Turn the Small knob to display the available VORs Turn the Small knob to turn the Aux Audio On or Off Aux Audio Speaker On/Off function. Then, press ENT Intercom On/OffSpeaker On/Off Intercom On/Off function. Then, press the ENT key Com Spacing System Configuration 34 Set Display Brightness Display Brightness Database Version function. Then, press the ENT key Display ContrastDatabase Info Display Contrast function. Then, press the ENT key Load Database function. Then, press the ENT key Load Database Press the Func key to return to the main menu Software VersionSerial Number Software Version function. Then, press the ENT key Timers Setting Up the Count Down TimerTo 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 Timer 48 Count Down Timer Value Now Counting Up This page intentionally left blank Appendix Troubleshooting Calibration error Recalibrate resolver It can be enabledOr disabled via a Remote mounted If in Lock Out mode Updating the Frequency Database Messages Property with Power has been Re-apply power to the unitSwitch has been Verify glideslope deviation Been in pressed All installationsInstallations Remote com Nav radio is Contact dealer for service Not communicatingProperty with System This page intentionally left blank Index Remote frequency control 2-5 Reverse look-up 2-4 Revisions