Garmin 255A User Manual

GNC 255A/255BPilot’s Guide

viiiGarmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3 Functions ...

ix190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.6.3 Viewing Timers in the Com Display ...3-244 Appendix

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1-1190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide1 GETTING STARTED1.1 Product DescriptionCombining a powerful VHF communications transceiver

1-2Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A1.2 Pilot ControlsThe GNC 255 controls have been designed to simplify operation of the system

1-3190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide1.2.3 Tuning LARGE/SMALL Concentric (Cursor) Knobs The LARGE right and SMALL right knobs a

1-4Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A1.2.10 FUNC (Function) Key The FUNC (Function) key accesses function categories for the fo

2-1190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide2 BASIC OPERATION2.1 Power On Turn the GNC 255 on by either turning the Power/Com Volume/S

2-2Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A2.2.2 Monitoring the Standby Com ChannelThe Frequency Monitoring function allows you to moni

2-3190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide 5. Turn the LARGE knob to select the waypoint Type. 6. Turn the SMALL knob to select

© 2012 Garmin Ltd. or its subsidiaries. All rights reserved. This manual reflects the operation of System Software version 2.00, or later. Some differ

2-4Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A2.2.4 Com Database Look-Up 1. Press the CURSOR knob from the Com display to activate the d

2-5190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide2.2.6 Emergency Channel 1. Press and hold the FLIP/FLOP key or the Com Remote Transfer (

2-6Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A2.3 Nav Radio2.3.1 Selecting a Nav FrequencyThe selection of Nav frequencies is the same as

2-7190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide 5. Turn the LARGE knob to select the waypoint Type. 6. Turn the SMALL knob to select

2-8Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A2.4 OBS ModeIf your system is configured with an external CDI/HSI, the OBS radial of your remo

2-9190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide2.5 Distance/Speed/Time (DST) DisplayWhen the GNC 255 has received data from an external dev

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3-1190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3 FUNCTIONSThe Functions section allows provides information about Com Frequencies, Nav Frequ

3-2Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A 1. Press the FUNC key to access the Functions. 2. Turn the LARGE knob to select t

3-3190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.2.2 Com User FrequenciesFifteen Com User Frequencies can be saved with an assigned waypoint

i190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideLIMITED WARRANTYAll Garmin avionics products are warranted to be free from defects in materials

3-4Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A 2. Press the ENT key to confirm deletion of the displayed frequency. 3.2.2.3 Editing a

3-5190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.2.3 Com Database FrequenciesThe GNC 255 contains a large database of Com frequencies that m

3-6Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.2.4 Com Nearest Airports (APT)The GNC 255 will report the 25 nearest Airports (APT), when i

3-7190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.2.5 Com Nearest Area Control Center (ACC) FrequenciesThe GNC 255, when interfaced with an a

3-8Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.2.6 Com Nearest Flight Service Station (FSS) FrequenciesThe GNC 255, when interfaced with a

3-9190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.2.7 Com Nearest Weather (WX) FrequenciesThe GNC 255, when interfaced with an appropriate GP

3-10Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.3 Nav FrequenciesThe Nav Frequencies category in the Functions section contains remotely a

3-11190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.3.2 Nav User FrequenciesUp to 15 Nav User Frequencies can be saved with an assigned waypoi

3-12Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.3.2.3 Editing a Nav User Frequency 1. Press FUNC. Turn the LARGE knob to reach the Nav f

3-13190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.3.3 Nav Database FrequenciesThe GNC 255 contains a large database of Nav frequencies that

iiGarmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A WARNING: For safety reasons, GNC 255 operational procedures must be learned on the ground.

3-14Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. ADuplicate Identifiers 1. When duplicate identifiers are found, press ENT. Duplicate Ident

3-15190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide 2. Turn the SMALL knob to display the available VORs. 3. Press the ENT key to accep

3-16Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.4.2 Aux AudioThe Aux function allows you to turn Aux Audio On/Off and set the volume valu

3-17190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.4.3 Intercom On/OffThe Intercom On/Off function toggles intercom on and off. The intercom

3-18Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.5 System ConfigurationThe System Configuration function will show the Software Version, Dat

3-19190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.5.2 Display BrightnessAs it arrives from the factory, the GNC 255 automatically adjusts it

3-20Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.5.3 Display ContrastThe Display Contrast has a range from -50 (Low Display Contrast) and

3-21190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.5.5 Load DatabaseThe GNC 255 has a USB connector to allow for easily updating the system

3-22Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A 5. Wait until the updating process is complete and then remove the memory device and cabl

3-23190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide3.6 TimersThe GNC 255 has both Count Up and Count Down timers, which may operate simultaneou

iii190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide NOTE: Canadian installations: In accordance with Canadian Radio Specifications Standard 102

3-24Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A3.6.2 Setting Up the Count Up Timer 1. Press FUNC to access the Functions. Turn the LARG

3-25190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideWhen the Count Down Timer reaches 0:00, it will continue counting as a Count Up value. The C

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4-1190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s Guide4 APPENDIX4.1 TroubleshootingIf efforts to resolve the problem fail, contact your dealer or t

4-2Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. AProblem Possible Cause ActionGNC 255 does not power on No power to the GNC 255Check power con

4-3190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideProblem Possible Cause ActionDisplay shows “Incorrect Calibration Checksum” at start-upCorru

4-4Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. A4.3 MessagesWhen a Message has been issued by the unit, the Message will be shown on the disp

4-5190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideMessage Description ActionCOOLING FAN - The cooling fan has failed. The GTN cooling fan is p

4-6Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. AMessage Description ActionREMOTE KEY STUCK - Com remote transfer key is stuck. The remote co

4-7190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideMessage Description ActionREMOTE KEY STUCK - Nav remote transfer key is stuck. The remote na

ivGarmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. ANOTE: This device complies with Part 15 of the FCC limits for Class B digital devices. This e

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Index-1190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideINDEXAAppendix 4-1BBasic operation 2-1Brightness 3-19CCautions ii, 2-6Clear 1-3Com d

Index-2Garmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. ARRecent com frequencies 3-2Recent nav frequencies 3-10Record of Revisions viRegistrati

© 2012 GARMIN CorporationGARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. Tel. 913/397.8200 or 800/800.1020 Fax 913/39

v190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideProduct Registration and SupportHelp us better support you by completing your online registrati

viGarmin GNC 255A/255B Pilot’s Guide190-01182-01 Rev. ARecord of RevisionsPart Number Revision Date Description190-01182-01 A 11/19/12 Initial releas

vii190-01182-01 Rev. AGarmin GNC 255A/255B Pilot’s GuideContentsProduct Registration and Support ..............