Owner's Manual - West Marine

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APPENDIX > LEARNING ABOUT GPS• Using WAAS: WAAS capability is enabled and the unit isreceiving WAAS corrections.• Check Beacon Wiring: The DGPS setting is enabled in theCom 1 or 2 tab of the Main Menu but no DGPS device isdetected.• No Beacon Signal: DGPS receiver is attached, but nottransmitting RTCM data to GPS.• Tuning Beacon: The receiver is tuning manually to a DGPSfrequency.• Using Differential: The unit is receiving DGPS corrections.• Scanning for Beacon: The DGPS receiver is scanning for anavailable frequency.What is WAAS?The Wide Area Augmentation System (WAAS) is an FAA-fundedproject to improve the overall integrity of the GPS signal andincrease position accuracy for users in North America.The system is made up of satellites and approximately twenty-fiveground reference stations positioned across the United States thatmonitor GPS satellite data. Two master stations, located on eithercoast, collect data from the reference stations and create a GPS datacorrection message.According to the FAA’s Web site, testing in September 2002 ofWAAS confirmed an accuracy performance of 1–2 meters horizontaland 2–3 meters vertical throughout the majority of the continentalUnited States and portions of Alaska.WAAS is just one service provider that adheres to the MOPS(Minimum Operational Performance Standard) for global SatelliteBased Augmentation Systems (SBAS). Eventually, there willbe several services of worldwide geostationary communicationsatellites and ground reference stations.All SBAS systems use the same receiver frequency; therefore, anyoperational SBAS system should be capable of providing your GPSunit with increased accuracy at any location in the world.Currently, enabling WAAS on your Garmin 276C Plus in regionsthat are not supported by ground stations may not improve accuracy,even when receiving signals from an SBAS satellite. In fact it candegrade the accuracy to less than that provided by GPS satellitesalone. For this reason, when you enable WAAS on your GarminGPS receiver, the receiver automatically uses the method thatachieves the best accuracy. To enable WAAS, refer to page 6.For more information, go to http://gps.faa.gov/Programs/WAAS/waas.htm.114 276C Plus Owner’s <strong>Manual</strong>190-00501-00_0A.indd 1141/13/2005 10:44:12 AM
LORAN TD SetupLORAN C is a radio navigation aid operated and maintained in theUnited States by the United States Coast Guard. The name LORANis an acronym for “LOng RAnge Navigation.” The LORANsystem covers the entire United States and the United StatesCoastal Confluence Zone. From the perspective of a mariner, thesystem is used for ocean and coastal navigation. It can be used as asupplemental system for harbor and harbor approach navigation, andit is used for inland navigation by recreational vehicles.LORAN TD FeatureThe LORAN TD (Time Delay) feature eases the transition fromusing LORAN to using GPS. The unit automatically convertsGPS coordinates to LORAN TDs for those who have a collectionof LORAN fixes for favorite fishing spots and other waypointsrecorded as TDs. You can display your position as a TD or enterwaypoints as TDs. The accuracy to be expected from this conversionis approximately thirty (30) meters. When the unit is placed in theLORAN TD format mode, it simulates the operation of a LORANreceiver. Position coordinates may be displayed as TDs, andall navigation functions may be used as if the unit was actuallyreceiving LORAN signals.APPENDIX > LORAN TD SETUPUsing the LORAN TD FormatWhen creating new waypoints using LORAN TD coordinates,you must set the correct LORAN chain number and secondarystations in the Setup TD field before storing the waypoint. Afterthe waypoint is stored in unit memory, it will always reference theLORAN chain number and secondary stations currently selected inthe Setup TD field. If you enter a different LORAN chain numberor change the secondary stations or offsets in the Setup TD field, theactive waypoint information will reflect those changes. Since the276C Plus does not rely on the LORAN signal for navigation, it canreference a different GRI chain and/or secondary stations and stillnavigate to the location stored in memory.Enable LORAN TD through the Location Format field in theLocation Setup tab of the Main Menu. The LORAN TD Setupwindow contains the fields to select the Loran GRI-Chain Number,Primary and Secondary Stations, and TD Offsets.276C Plus Owner’s <strong>Manual</strong> 115190-00501-00_0A.indd 1151/13/2005 10:44:12 AM
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INTRODUCTION > TABLE OF CONTENTSTab
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INTRODUCTION > TABLE OF CONTENTSUsi
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INTRODUCTION > TABLE OF CONTENTSApp
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GETTING STARTED > CHARGING THE 276C
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GETTING STARTED > GETTING SATELLITE
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Learning about the KeypadPress the
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GETTING STARTED > USING THE 276C PL
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Simulated Basic NavigationTo help y
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BASIC OPERATION > FINDING AN ITEMUs
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BASIC OPERATION > CREATING AND USIN
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BASIC OPERATION > MANAGING YOUR TRA
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BASIC OPERATION > MANAGING YOUR TRA
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BASIC OPERATION IN THE SEA MODES >
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SEA MODES PAGES AND FEATURES > MAP
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SEA MODES PAGES AND FEATURES > MAP
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SEA MODES PAGES AND FEATURES > COMP
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SEA MODES PAGES AND FEATURES > HIGH
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SEA MODES PAGES AND FEATURES > ACTI
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SEA MODES PAGES AND FEATURES > TIDE
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SEA MODES PAGES AND FEATURES > ENTE
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SEA MODES PAGES AND FEATURES > VIEW
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SEA MODES PAGES AND FEATURES > USIN
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SEA MODES PAGES AND FEATURES > USIN
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BASIC OPERATION IN THE LAND MODES >
Page 72 and 73: BASIC OPERATION IN THE LAND MODES >
Page 74 and 75: BASIC OPERATION IN THE LAND MODES >
Page 76 and 77: PAGES AND FEATURES OF THE LAND MODE
Page 78 and 79: PAGES AND FEATURES OF THE LAND MODE
Page 80 and 81: ADDITIONAL FEATURES > SETTING ALARM
Page 82 and 83: ADDITIONAL FEATURES > USING THE CAL
Page 84 and 85: ADDITIONAL FEATURES > VIEWING CELES
Page 86 and 87: ADDITIONAL FEATURES > VIEWING THE T
Page 88 and 89: CUSTOMIZING YOUR 276C PLUS > SETTIN
Page 96 and 97: CUSTOMIZING YOUR 276C PLUS > CUSTOM
Page 98 and 99: CUSTOMIZING YOUR 276C PLUS > CHANGI
Page 100 and 101: CUSTOMIZING YOUR 276C PLUS > CHANGI
Page 102 and 103: SETTING UP AND USING SONAR > USING
Page 108 and 109: SETTING UP AND USING SONAR > SETTIN
Page 110 and 111: SETTING UP AND USING SONAR > SETTIN
Page 112 and 113: SETTING UP AND USING SONAR > UNDERS
Page 114 and 115: APPENDIX > SPECIFICATIONSSpecificat
Page 116 and 117: APPENDIX > OPTIONAL ACCESSORIESOpti
Page 118 and 119: APPENDIX > INSTALLATION INFORMATION
Page 120 and 121: APPENDIX > INSTALLATION INFORMATION
Page 124 and 125: APPENDIX > LORAN TD SETUPTo set up
Page 126 and 127: APPENDIX > DIGITAL SELECTIVE CALLIN
Page 128 and 129: APPENDIX > DATA FIELD OPTIONSData F
Page 130 and 131: APPENDIX > MESSAGESMessagesApproach
Page 132 and 133: APPENDIX > SAFETY AND PRODUCT INFOR
Page 134 and 135: APPENDIX > SAFETY AND PRODUCT INFOR
Page 136 and 137: INDEXDigital Selective Calling. See
Page 138 and 139: INDEXSerial Number 1, 123Setup TabC
Page 140: For the latest free software update
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