Instruction/ maintenance manual of the product 276C Garmin
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GPSMAP ® 276C chartplotting receiver owner’ s manual.
© Copyright 2004, 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.S.A. T el. 913/397.8200 or 800/800.1020 Fax 913/397.8282 Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9DL, U.
I NTRODUCTION Thank you for choosing the Garmin ® GPSMAP ® 276C, which utilizes the proven performance of Garmin GPS and full-featured mapping to create an unsurpassed portable marine navigation chartplotter and automobile navigation device.
T able of Contents Introduction ...........................................................................i Caring for the GPSMAP 276C ................................................ iv W arning ......................................................
Sonar T ab ............................................................................... 70 Alarms T ab ............................................................................. 71 Calendar T ab ..................................................
Caring for the GPSMAP 276C The GPSMAP 276C case is constructed of high quality materials and does not require user maintenance except cleaning. Cleaning the Case Clean the unit’ s outer casing (except for the screen) using a cloth dampened with a mild detergent solution and then wipe dry .
Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious injury . When installing the GPSMAP 276C in a vehicle, place the unit securely so that it does not interfere with vehicle operating controls or obstruct the driver ’ s view of the road (see diagram).
Failure to avoid the following potentially hazardous situations may result in injury or property damage. The GPSMAP 276C is designed to provide you with route suggestions. It does not reflect road closures or road conditions, traffic congestion, weather conditions, or other factors that may affect safety or timing while driving.
G ETTING S T ARTED Unit Overview The GPSMAP 276C is an all-in-one, versatile color chartplotter and automobile navigator—perfect for land or water . This portable GPS navigator features a 256-color .
Charging the GPSMAP 276C Before using the unit, you might need to charge the battery in the GPSMAP 276C. Plug the unit into an external power source to charge. Y ou can use the unit while it is char ging. T o charge the unit’s battery: 1. Lift the rubber weather cap to expose the power connector on the back of the unit.
T urning On the GPSMAP 276C The first time you turn on your new GPSMAP 276C, the GPS receiver must collect satellite data and establish its current location. T o ensure proper initialization, the GPSMAP 276C is shipped from the factory in AutoLocate mode, which allows the receiver to “find itself” anywhere in the world.
Getting Satellite Signals After you turn on the GPSMAP 276C, the unit automatically begins searching for satellites. The GPS page appears while the unit is gathering satellite signals and acquiring a fix, which should take only a few minutes.
GPS Status Receiver status field Sky view Signal strength bars Power source indicator The progress of satellite acquisition is shown in three stages: • No signal strength bars —the receiver is looking for the satellites indicated. • White signal strength bars —the receiver has found the satellite and is collecting data.
GPS Options Press MENU twice to open the Main Menu. Use the ROCKER to highlight the GPS tab. Press MENU to open the Options menu. GPS T ab Options Menu Start/Stop Simulator —starts and stops Simulator Mode, which is helpful when learning how to use your unit.
IN and OUT Keys • Press to adjust map scale to show a larger area with less detail (zoom out) or a smaller area with more detail (zoom in). P AGE Key • Press to cycle through the main pages in sequence and exit a submenu page. • Press and hold to switch between Marine and Automotive modes.
Using the GPSMAP 276C This section explains how to enter and select information with the GPSMAP 276C. Understanding T erms The GPSMAP 276C’ s advanced keypad system is designed to allow quick, convenient selection of navigation options and data entry .
Selecting Options and Entering Data T o enter data and select options, use the ROCKER to highlight, select, or choose an item in a list or a field on the screen. Use the ENTER key and the ROCKER to select options, enter names and numbers in data fields, and activate your selections.
Entering data TIP: T o clear the entir e data field, highlight the left-most character field and pr ess left on the ROCKER again. 3. Press ENTER . Not all fields are programmable. When you are on a page with fields that are not selectable, the highlight skips over them.
Simulator Mode T o help you get to know your GPSMAP 276C, you can use the unit in Simulator Mode. Simulator Mode is helpful for practicing with the unit indoors or when no satellite signals are available. All waypoints and routes created in Simulator Mode are retained in memory for future use.
B ASIC O PERA TION I N M ARINE M ODE This section explains some of the more common operations you will perform with your GPSMAP 276C, such as navigating to a destination. T o switch usage modes: 1. Press and hold the P AGE key . The Usage Mode menu appears.
Navigating in Marine Mode There are several ways to begin navigating to a point: • Select a point on the map, and press NA V . • Press NA V to activate a new route using the Find Menu or activate a saved route or track. • Press the FIND key to search for a particular item and create a route to it.
T o go to a highlighted map item: 1. Use ROCKER to highlight the item to which you want to navigate on the Map Page. 2. Press NA V . Go T o <point name> appears in the list of options and is automatically highlighted. If you selected an area of the map that is not a map feature, Go T o MAP Point is listed.
T o search for an item and route to it: 1. Press FIND to open the Find menu. 2. Using the ROCKER , highlight a category , such as Cities , and press ENTER . 3. Press ENTER and use the ROCKER to begin entering the letters contained in the item name. The list begins to sort by the items that contain the letters you are entering.
Finding an Item Use the Find menu to easily search the stored waypoints and points of interest. T o open the Find menu, press the FIND key . The Find menu is comprised of several default categories: W aypoints, Cities, Exits, T ransportation, and T ide Stations.
T o find an item from another location: 1. From any page, press FIND . 2. Using the ROCKER , highlight a category from the list, and press ENTER . 3. Press MENU to open the options menu. Find From Options Menu 4. Highlight Near Other , and press ENTER .
Viewing the Information Page Each item on the map and each item listed in the Find menu results list has an Information Page. T o view details about an item: 1. Highlight a point on the map or in the search results list, and press ENTER . An Information Page appears with details about the item in a tabbed format.
Creating and Using Routes Use the GPSMAP 276C to create and store up to 50 reversible routes, with up to 300 points each. Creating a Route Use the Route tab on the Main Menu to create routes.
T o create a route graphically: 1. Press MENU twice to open the Main Menu. Use the ROCKER to highlight the Route tab. 2. Press MENU to display the Route options menu. Select New Route , and press ENTER . 3. Highlight the first blank slot in the Route List Page and press MENU .
Editing a Route After you create a route, use the Route Review Page to edit, change the name, and review route points of a selected route. T o change the name of the route: 1. Press MENU twice to open the Main Menu. Highlight the Route tab. 2. Highlight the route you want to edit, and press ENTER .
T o add points to the route: 1. Press MENU twice to open the Main Menu. Use the ROCKER to select the Route tab. 2. Highlight a route, and press ENTER . 3. Press up or down on the ROCKER to highlight the spot in the route that you want to add the new point.
Y ou can enter information about your trip so the GPSMAP 276C can estimate information about your trip. T o plan your route: 1. Open the Route Review Page options menu. 2. Highlight Plan Route , and press ENTER . Entering Speed and Fuel Flow for trip planning 3.
Creating and Using W aypoints W aypoints are locations or landmarks you record and store in your GPS. They are locations you might want to return to later , such as checkpoints on a route or significant ground features. Y ou can add waypoints to routes and even create a Go T o directly to the selected waypoint.
Creating W aypoints Using the Map Y ou can quickly create a waypoint using the Map Page. When you pan the map and move the arrow over a map item, you see a highlighted description of that item. The GPSMAP 276C uses the map item text shown on the map as the default name and symbol for the new waypoint.
Creating a W aypoint by Entering Coordinates Y ou can manually enter location coordinates to create a waypoint. This method is useful for creating a waypoint at a specific latitude/ longitude position from a chart.
Reviewing a W aypoint After you create and store a waypoint, you can modify , review , rename, move, or delete it at any time using the W aypoint Review and W aypoint Edit Pages. These pages provide virtually the same information. T o access the Waypoint Review Page: 1.
Adding a W aypoint to a Route Append to Route adds the selected waypoint to the end of a route. This option appears when you are not navigating. When you are navigating to a destination, Add to Current Route appears. The selected waypoint is added to the current route before the route destination.
Projecting a W aypoint Y ou can also create a new waypoint by projecting the distance and bearing from a specific location to a new location. T o create a new waypoint by projecting its location: 1. Create a waypoint using your favorite method (discussed in previous sections).
Editing a W aypoint The User sub tab shows a master list of all waypoints currently stored in memory . From the User list, you can review , edit, rename, or delete individual waypoints, or delete all user waypoints.
Organizing W aypoints into Categories Y ou can organize your waypoints into categories to help you manage and use your waypoints. For example, you can create a V acation category that stores all of the waypoints you will use for your upcoming vacation.
T o delete a category: 1. With the W aypoint Categories window open, highlight the category you want to delete, and press MENU . 2. Highlight Delete Category , and press ENTER . W aypoint Categories Options Menu 3. Press ENTER again to finish deleting the category .
3. When deleting by symbol, highlight the symbol of the waypoint you want to delete, and press ENTER . When deleting by category , select the category you want to delete from the list, and press ENTER . 4. Highlight OK , and press ENTER to confirm. Choose Cancel or press QUIT to exit without deleting the waypoint.
T o turn proximity alarms on or off: 1. Press MENU twice to open the Main Menu. 2. Highlight the Points tab, and then highlight the Proximity sub tab. 3. Use the ROCKER to highlight the Proximity Alarm field, and press ENTER . 4. Select On or Off , and press ENTER .
Managing Y our T racks The GPSMAP 276C draws an electronic breadcrumb trail or “track log” on the Map Page as you travel. The track log contains points along its path, including time, and location for each point. The track log starts recording as soon as the GPSMAP 276C gets a location fix.
T o clear the track log: 1. Press MENU twice to open the Main Menu. 2. Highlight the T rack tab, and highlight the Active sub tab. 3. Highlight the Clear button, and press ENTER . A confirmation message appears. Clearing the track log 4. Highlight OK , and press ENTER .
Saved T racks The Saved sub tab shows all of the saved tracks in your unit. Saved Sub T ab Press MENU to open the Saved tab options menu: Review on Map —shows the highlighted track on the Map Page. T racBack —navigates the track. Y ou can either navigate the track as it is saved, or you can navigate the track in reverse.
Navigating a Saved T rack Y ou can save your track log to use later as a T racBack, which reduces your track log into a route with up to 300 turns. When initiated, a T racBack route leads you back to the oldest stored track log point. It is a good idea to clear the existing track log before you start your current trip.
Following a Marine Route After you activate a route, the GPSMAP 276C automatically starts guiding you to the destination using a variety of tools and pages. See Y our Route on the Map Page Y ou can track the progress of your route on the Map Page. Y our route is shown with a magenta line.
See Y our Progress on the Active Route Page When you initiate a route in Marine Mode, the Active Route Page shows each point (waypoint or map item) of the active route, as well as the point name, course, distance, and several other fields of information.
M ARINE M ODE P AGES AND F EA TURES This section discusses the major pages in Marine Mode, such as the Map and Compass pages, and some additional marine features, including DSC and the Marine T imer . Map Page The GPSMAP 276C features a real-time moving map that can do much more than just plot your course.
4. Select an option, and press ENTER . The options vary between the three usage modes and the page you are setting up. Selecting the page layout T o change a data field display: 1. Press P AGE to open the page you want to change. 2. Press MENU to open the options menu.
Setting up the Map Page 4. Press up or down on the ROCKER to highlight a setting, and press ENTER . 5. Press P AGE or QUIT to exit. Additional Map Data Y ou can view the data currently loaded on your GPSMAP 276C unit and data card. T o review/change map information: 1.
5. T o view detailed information about an individual map, highlight the map name, and press ENTER . Highlight OK , and press ENTER to exit the Map Information page. 6. T o select or deselect individual maps for display on the Map Page, highlight the box next to the map you want, and press ENTER to check or uncheck the Show box.
• When the selected zoom range exceeds the resolution of the data in use, “overzoom” appears below the map scale. No additional data is available • When external data (such as MapSource data) is used, “map card” appears below the map scale.
T o view details about an on-screen point: 1. Use the ROCKER to move the arrow to a waypoint or map item. If there are several items grouped closely together , zoom in closer for a better view .
Measuring Distance Y ou can measure the distance and bearing between two map items. T o measure the bearing/distance between two points: 1. On the Map Page, press MENU to open the options menu. 2. Highlight Measure Distance , and press ENTER . An on- screen arrow appears on the map display at your present location with ENT REF below it.
If the arrow points up, you are going directly to the waypoint. If the arrow points any direction other than up, turn toward the arrow until it points up, and then continue in that direction. NOTE: Y ou must be moving for the compass to accurately update and show your heading.
Y ou must change the Compass Page layout to use the Marine T imer . T o open the Marine Timer: 1. Press P AGE repeatedly until the Compass Page appears. 2. Press MENU . 3. Use the ROCKER to highlight Set Up Page Layout and press ENTER . 4. Highlight 2 Columns With T imer , and press ENTER .
Highway Page The Highway Page is available in both Marine Mode and Automotive Mode, though it is not shown by default in Automotive Mode. Press P AGE repeatedly to open the Highway Page. Highway Page When you are navigating, the Highway Page provides digital and graphic steering guidance to the destination.
Highway Page Options Use the Highway Page options menu to define the data fields and select which waypoints and tracks appear on the screen. The data fields, located along the right side of the page, provide various types of useful data. Y ou can customize the layout to show additional data fields.
Active Route Page When you initiate a route in the GPSMAP 276C, the Active Route Page shows each point (waypoint or map item) of the active route, with the point name, Course, Distance, and several other fields of information. The current destination point, the active point, is marked with an arrow icon.
Position Data Page The Position Data Page shows important navigation data while navigating a route in Marine Mode. By default, the page shows a compass ribbon, your current latitude and longitude, the current date and time, your location in relation to a prominent nearby landmark such as a waypoint or city , and eight user -selectable data fields.
B ASIC O PERA TION I N A UTOMOTIVE M ODE This section discusses some of the more common Automotive operations you will perform with your GPSMAP 276C in Automotive Mode. Please note that many common operations, such as marking a waypoint and creating a route, are performed the same way as in Marine Mode.
Navigating in Automotive Mode When you initiate navigation in Automotive Mode, the GPSMAP 276C automatically generates a turn-by-turn route. In some instances, you may need to select the Follow Roads option to generate a turn-by-turn route.
T o create a new route: 1. Press NA V to open the Navigate menu. 2. Highlight New Route , and press ENTER . 3. From the Find menu, highlight W aypoints , and press ENTER . (Y ou can also choose to go to other points, such as Cities or Exits from this list.
Following a Saved Route Use the Navigate menu to follow a saved track or route. If you want to follow roads on your route, press MENU , and select Follow Roads on the Active Route Page. T o follow a saved route in Automotive Mode: 1. Press NA V to open the Navigate menu.
Editing Y our Route When you are navigating a route, you can edit that route. Y ou can add areas and roads to avoid as well as temporary detours to your current route. Y ou can also add stops along your trip, called V ia Points. While navigating, press NA V to open the Navigate menu.
Detour Distance 4. T o end the detour manually , press NA V again, and select Cancel Detour . Adding and Editing Stops (Via Points) Y ou can add V ia Points—points through which you would like to travel—to your route using the Edit V ias option.
Following an Automotive Route The GPSMAP 276C guides you to your destination using many tools, such as the Map Page and Current Route Page. T rack Y our Progress with the Map Page Y ou can track the progress of your route on the Map Page. Y our route is shown with a magenta line.
A UTOMOTIVE M ODE P AGES AND F EA TURES This section discusses the major pages in Automotive Mode, such as the Map Page, as well as some additional features, such as Routes and Points. For information about pages and features not discussed here, see the “Marine Mode Pages and Features” section.
Current Route Page Whenever you activate a route in the GPSMAP 276C in Automotive Mode, the Active Route Page shows each turn of the active route, with the distance to the turn, the street name, and estimated time to arrival and time of arrival.
T rip Computer Page The T rip Computer Page shows important data while navigating a route in Automotive Mode. It indicates your current speed and other helpful data about your trip, such as average speed and moving time. T rip Computer Page Reset the T rip Computer before beginning a trip.
M AIN M ENU The Main Menu on the GPSMAP 276C provides access to various waypoint, system, navigation and interface management, and setup menus. The Main Menu is accessible from any page by pressing the MENU key twice. Main Menu T o select a tab from the Main Menu: 1.
Route T ab Use the Route tab create and store up to 50 reversible routes, with up to 300 points each. See the “Creating and Using Routes” section beginning on page 19 for more information about routes.
T rack T ab Use the T rack tab to specify whether or not to record a track log, define how it is recorded, or save the track log data for future use. The T rack tab is divided into two sub tabs: Active and Saved. For more information about tracks, see the “Managing Y our T racks” section beginning on page 35 .
Understanding Distress Calls W ith your GPSMAP 276C properly connected to a VHF radio with DSC output, you can receive any DSC distress call within range. An alert message appears and a tone sounds when a distress call is received. The alarm only sounds on a distress call; position reports do not sound the alarm.
DSC Call List The Ca ll L ist sh ows the 50 mos t re cen t c alls , e ven if the uni t i s le ft una tte nded . The Ca ll L ist on ly s how s th e m ost rec ent cal l f rom a ves sel . If a sec ond cal l is re ceiv ed, it rep lac es t he first ca ll in t he Call Lis t.
DSC Directory list DSC Directory entries. Press ENTER to open the entry review page. Blank entry . Press ENTER to add a DSC Directory entry . T o add a new DSC Directory entry: 1. Open the DSC Directory on the Main Menu. 2. Use the ROCKER to highlight the first blank space in the directory list, and press ENTER .
Setting Up DSC Use the Setup sub tab to turn DSC on and off. If you have more than one chartplotter and only want DSC to display on another chartplotter , turn DSC off on this unit. This Setup sub tab also allows you to simulate Distress Calls and Position Reports while the unit is in Simulator Mode (see page 1 1 ).
Alarms T ab Use the Alarms tab to define alarm settings. When an alarm goes of f, the alarm message appears on the display and the unit emits five (5) beeps. When you set an alarm to be persistent, the alarm message appears on the display and the unit beeps until you press ENTER to acknowledge the alarm.
Off Course —sets an alarm to sound when off your desired course. Select On , then enter a distance. Anchor Drag —sets an alarm to sound when you exceed a specified drift distance. Select On , and then enter a distance. System Alarms The System sub tab contains the following alarms: Clock —sets an alarm based on the unit’ s clock.
Calendar T ab Use the Calendar tab to plan trips, view sun and moon, and hunting and fishing information for the day . Calendar T ab in Day View Highlight an arrow , and press ENTER to change the date in the view . Sunrise and set times for the current location and date.
Celestial T ab The Celestial tab shows tide information, sun and moon information, and hunting and fishing information. Y ou can view this data for your current location, a location from the map, or a waypoint location. Also, you can select a different date and time, or use the current data.
T o view a tide chart for a different tide station: 1. From the Tide sub tab, highlight the At field, and press ENTER . The Find menu opens showing the tide stations. 2. Press MENU , and select Near Current Location , Near Current Route , Near Other (select another location using the map), or Near Destination .
T o view sun and moon information for a different date: 1. Use the ROCKER to highlight the Date field, and press ENTER . 2. Use the ROCKER to change the digits of the date to the date you want. Y ou can also use the IN and OUT keys to view information for another date.
Hunt & Fish Sub T ab T o view hunt and fish information for a different date: 1. Highlight the Date field, and press ENTER . 2. Use the ROCKER to change the digits of the date to the date you want. Y ou can also use the zoom IN and OUT keys to view information for another date.
Message T ab The Message tab shows a list of messages generated by the GPSMAP 276C. Use the ROCKER to scroll through the entire list of messages on the Log sub tab. Use the Log Filter sub tab to show only the message types that you want to view . Main Menu—Message T ab T o view messages: 1.
Display T ab Use the Display tab on the Main Menu to set display features, such as which pages to show in the main page sequence and how long the backlight stays on. T o access the Display tab: 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to highlight the Display tab.
Sound T ab Use the Sound tab to customize the sounds made by the unit. T o access the Sound tab: 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to highlight the Sound tab. Main Menu—Sound T ab Beeper —sets the beeper to chime during keypresses and alarms ( Key and Alarm ) or on Alarms Only .
Usage Mode —sets the unit to operate in Marine (default) or Automotive Mode. Speed Filter —allows the unit to average speed readings. Choose from Off , Auto (automatically controls filtering), or On (allows you to enter a value in seconds). T ext Language —sets the unit’ s on-screen language.
Calculation Method —sets how the unit searches for the route. • Quickest Calculation —calculates the route the quickest, but it might not produce the best route. • Quick Calculation —takes a bit more time to calculate but generates a better quality route.
Timers Sub T ab Use the T imers sub tab to set timers and view information about how long the unit has been on. T o access the Timers sub tab 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to select the Setup tab, and then select the Timers sub tab.
Units Sub T ab Use the Units sub tab to customize measurement units. T o access the Units sub tab 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to select the Setup tab, and then select the Units sub tab. Units Sub T ab Distance and Speed— select the unit to show your speed and distance traveled.
The default setting is WGS 84. The unit automatically selects the best datum depending on your chosen location format. W ARNING: Selecting the wr ong map datum can result in substantial position err ors. When in doubt, use the default WGS 84 datum for best overall performance.
3. T o show the welcome message when you turn on your GPSMAP 276C, highlight the Show at Power-up check box, and press ENTER to select it. T o hide the welcome information at start-up, clear the check mark.
• T ext Out —allows the unit to output simple text data that includes, data, time, location, and velocity . The Baud can be set to 1200, 2400, 4800, or 9600.
When the unit is receiving a DGPS signal, the Signal to Noise Ratio) (SNR) and Distance fields show data. The SNR range is 0 dB to 30 dB, with 30 being the best. The Distance field may or may not show data, depending on the signal being broadcast from the DGPS site.
S ETTING U P AND U SING S ONAR This section covers the additional sonar options for the GPSMAP 276C when used in conjunction with a GSD 20 Sounder Module. Read the GSD 20 Sounder Module Installation Instructions to properly install the sounder module.
Using the Sonar Page When combined with a GSD 20 Sounder Module, your GPSMAP 276C becomes a powerful fishfinder/flasher with the Sonar Page. If a GSD 20 is attached, but the unit does not detect a transducer , a “Sonar T urned Off” message appears across the Sonar Page.
T o select an adjustment option: Use one of the following methods to select an adjustment option: • Press the ROCKER right or left to scroll through the adjustment options. When the adjustment option you want appears, press ENTER . • Press MENU , highlight Adjustments , and press ENTER .
• Btm (Bottom) Split —shows two reduced pictures, the right at the original depth scale and the left showing sonar returns from the bottom up. All target depths read as a distance from the bottom. • Btm (Bottom) Lock —shows returns from the bottom up on the full screen.
Using the Pointer on the Sonar Page Y ou can show the pointer (arrow) to reference sonar items and mark underwater waypoints. This makes it easier to find and use an object such as a stump for a future fishing location. When using this feature, the Sonar Page pauses.
Depth Number —select how efficient the digital depth update rate is. Fast Update updates quicker and is recommended for low-noise water deeper than 50 feet. Auto is best for shallow water or high- noise areas, has a slower screen update, and is best used if you travel a wide variety of depths.
Calibrating the W ater Speed 3. If the new speed is correct, highlight OK , and press ENTER . If you want to manually enter a calibration, press ENTER while the speed is highlighted, enter a new speed, and press ENTER again.
Flasher —select On to display a graphic Flasher representation on the far right side of the sonar display . This graphic Flasher shows structure and bottom returns much the same as a true Flasher . Y ou might find this feature useful when using Fish Symbols.
Changing the T emperature Display The graph will adjust and show the temperatures changes according to the T emperature Scale and T ime Duration settings. T emperature Scale —select a degree span from the list. Select Auto to have the unit automatically determine the best range, or select a span of 2, 4, 6, 8, or 10 degrees.
Generally speaking, if the only thing between the transducer and the bottom is water , the first strong return comes from the bottom directly below the transducer and sets the bottom level. W eaker secondary returns provide the detailed data. Stronger returns display in darker colors, with red being the strongest return.
The narrow cone angles (10°) associated with high frequencies (200 kHz) provide better bottom resolution and crisper detail, but cannot show a large coverage area for finding fish. The 10° cone angle provides a coverage width that is approximately 2/10 of the water depth.
Whiteline The GSD 20 Sounder Module can help you determine whether the bottom is hard or soft. When the sonar sound waves are reflected back by the bottom, a hard bottom returns a stronger signal than a soft bottom. A thin whiteline indicates a softer bottom, while a thick whiteline indicates a harder bottom.
A PPENDIX Specifications Physical Specifications Size: 5.7" W x 3.2" H x 1.9" D (14.5 x 8.1 x 4.8 cm) W eight: 13.6 oz (0.39 kg) Display: 3.75" diagonal (9.5 cm) T ransflective, 256-color display with backlighting (480 x 320 pixels) Case: Fully gasketed, high-impact plastic alloy , waterproof to IEC 60529 IPX7 T emp.
Optional Accessories In addition to the standard accessories included with your GPSMAP 276C, several optional accessories are available to enhance the operation of the GPSMAP 276C. T o obtain replacement parts and optional accessories, contact your Garmin Dealer , Garmin Product Support in the U.
Installation Information This section of the Appendix provides information on connecting the GPSMAP 276C to auxiliary devices and removing the antenna. Connecting the Power/Data Cable The power/data cable connects the GPSMAP 276C to an 11–35 VDC system and provides interface capabilities for connecting external devices.
Connecting Y our GPSMAP 276C to a Computer Y ou can connect your GPSMAP 276C to your computer using the supplied USB cable to connect to a USB data port or the optional PC Interface cable to connect to a DB-9 serial communications port.
Using xImage for Customized W aypoint Icons Use xImage to exchange images between your PC and your GPSMAP 276C. Y ou can download and save screenshots of any screen shown on your unit.
Interfacing The following formats are supported for connection of external devices: GARMIN proprietary Differential GPS (DGPS), NMEA 0180, 0182, 0183 (versions 1.5, 2.0, 2.3, 3.01), ASCII T ext Output, and R TCM SC-104 input (version 2.0). The following are the Approved Sentences for NMEA 0183, version 3.
Learning About GPS The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the United States Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use.
• Check Beacon W iring —the DGPS setting is enabled in the Interface sub tab on the Main Menu—Setup tab but no DGPS device is detected. • No Beacon Signal —DGPS receiver is attached, but not transmitting R TCM data to GPS. • T uning Beacon —the receiver is tuning manually to a DGPS frequency .
LORAN TD Setup LORAN C is a radio navigation aid operated and maintained in the United States by the United States Coast Guard. The name LORAN is an acronym for “LOng RAnge Navigation.” The LORAN system covers the entire United States and the United States Coastal Confluence Zone.
T o set up Loran TD from the Main Menu: 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to highlight the Setup tab, and then highlight the Location sub tab. 3. Using the ROCKER , highlight the Location Format field and press ENTER . Location Sub T ab 4.
Map Datums and Location Formats Map Datums are based on a mathematical model of the Earth. What Are a Map Datums? A datum is a mathematical model of the Earth that approximates the shape of the Earth and enables calculations to be carried out in a consistent and accurate manner .
Digital Selective Calling (DSC) DSC uses marine VHF radio GPS technologies to transmit and receive location information. DSC is used by mariners to assist them in two major areas: Distress Calls and Position Reporting. A non-emergency DSC Position Report allows mariners to exchange and display their positions.
How Are MMSI Assignments Obtained? Non-commercial users, such as recreational users, who remain in United States waters and only carry VHF , EPIRB (Emergency Position Indicating Radio Beacons), and Radar are not required to have a FCC ship station license.
Messages Accuracy Alarm —the GPS accuracy has fallen outside of user-set value. Alarm Clock —The alarm clock has sounded. Antenna Shorted to Ground —the external GPS antenna has an electrical connection problem. Contact Garmin Product Support. Approaching T urn —you are nearing a turn in a route.
No Roads Near Starting Point —the start location for the road route you tried to calculate is not near any roads. Select a different start location. No DGPS Position —no differential connection data is available, or not enough data is available to calculate a DGPS position.
Data Field Options The following list provides a brief description of each data field option. Some of these options are supported only by devices interfaced to your GPSMAP 276C. Accuracy —the current accuracy of your GPS determined location. Battery T imer —the time remaining on the battery before it is fully discharged.
Speed —your current vehicle speed can be measured in miles per hour , kilometers per hour , or knots. Steer —see Course to Steer . Sunrise —the time at which the sun rises on this day . Sunset —the time at which the sun sets on this day . Time —the current time and date.
Software License Agreement BY USING THE GPSMAP 276C, YOU AGREE T O BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTW ARE LICENSE AGREEMENT . PLEASE READ THIS AGREEMENT CAREFULL Y .
Limited W arranty This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. W ithin this period, Garmin will at its sole option repair or replace any components that fail in normal use.
FCC Compliance The GPSMAP 276C complies with Part 15 of the FCC interference limits for Class B digital devices FOR HOME OR OFFICE USE. These limits are designed to provide more reasonable protection against harmful interference in a residential installation, and are more stringent than “outdoor” requirements.
I NDEX A Accessories 102 Accuracy Alarm 72 Acquiring Satellites 5 Active Route Page 40, 52, 54 Active T rack T ab 35, 38 AC Outlet 2 Add to Route 19, 22, 24, 28, 59 Advanced NMEA Output Setup 88 Alarms 80 DSC 67, 70 navigation 71 persistent 71 proximity 34 sonar 72 system 72 Alarms T ab 71–72 Alerts.
Distance and Speed 84 Distress Calls 66, 67–70, 1 12, 1 13 Drift 72 DSC 66–70, 1 12 E Edit route 21, 22, 58 waypoints 30 Editing a W aypoint 30 Emergency 1 12 Entering Data 9 Erase T rack Log 36 E.
Marking a W aypoint 9, 24–26, 29 underwater 93 MayDay 69, 1 13 Measuring Distance 47 Messages 1 14, 1 16 Message T ab 78 Mils 84 MMSI 66, 1 12, 1 13 MOB 13, 15 Modes 12, 54 Month V iew 73 Moon Infor.
T ime sub tab 83 Units sub tab 84 W elcome sub tab 85 Set an Alarm 71 Set Date 83 Set Fuel Flow 23 Set Speed 23 Shallow W ater Alarm 72 Shorter Distance 81 Signal Strength 5 Simulator Mode 1 1 new loc.
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For the latest fr ee software updates (excluding map data) throughout the life of your Garmin products , visit the Garmin W eb site at www .garmin.com. © Copyright 2004, 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.
An important point after buying a device Garmin 276C (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Garmin 276C yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Garmin 276C - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Garmin 276C you will learn all the available features of the product, as well as information on its operation. The information that you get Garmin 276C will certainly help you make a decision on the purchase.
If you already are a holder of Garmin 276C, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Garmin 276C.
However, one of the most important roles played by the user manual is to help in solving problems with Garmin 276C. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Garmin 276C along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
