Garmin CHARTPLOTTING RECEIVER 276C User Manual

GPSMAP® 276C

chartplotting receiver

owner’s manual

Garmin International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. Tel. 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.K. Tel. 44/0870.8501241 Fax 44/0870.8501251

Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan Tel. 886/2.2642.9199 Fax 886/2.2642.9099

All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements. Visit the Garmin Web site ( information concerning the use and operation of this and other Garmin products.

Garmin®, GPSMAP®, AutoLocate®, TracBack®, BlueChart®, City Select®, MapSource®, and See-Thru® are registered trademarks of Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin.

www.garmin.com

) for current updates and supplemental

August 2005 Part Number 190-00335-00 Rev. C Printed in Taiwan

INTRODUCTION > ABOUT THIS MANUAL

INTRODUCTION

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. Take a moment to compare the contents of this package with the packing list on the outside of the box; if any pieces are missing, contact your Garmin dealer immediately.

The Basic Operation in Automotive Mode section provides you with information about navigating with the GPSMAP 276C in Automotive Mode. The Automotive Mode Pages and Features section reviews, in detail, the main pages and features in Automotive Mode, such as the Trip Data Page and creating waypoints.

The Main Menu section describes features found on the Main Menu, and information on how to change settings.

If you have a Garmin Sounder Module connected to your GPSMAP 276C, refer to the Setting Up and Using Sonar section.

About This Manual

To get the most out of your new navigation system, take time to read this manual and learn the operating procedures for your unit. This manual is organized into the following sections:

The Introduction contains the Table of Contents. The Getting Started section provides an overview of the unit, how to turn the unit on, and how to simulate navigation.

The Basic Operation in Marine Mode section provides you with information about navigating with the GPSMAP 276C in Marine Mode. The Marine Mode Pages and Features section reviews the main pages and features in Marine Mode, such as using DSC and Man OverBoard.

The Appendix contains speciﬁcations, optional accessories, maintenance information, and other product information.

An Index is provided at the end of the manual for reference.

Manual Conventions

This manual uses the term Warning to indicate a potentially hazardous situation, which, if not avoided, could result in death or serious injury.

This manual uses the term Caution to indicate a potentially hazardous situation, which, if not avoided, may result in minor injury or property damage. It may also be used without the symbol to alert you to avoid unsafe practices.

GPSMAP 276C Owner’s Manual i

INTRODUCTION > TABLE OF CONTENTS

Table of Contents

Introduction ...........................................................................i

Caring for the GPSMAP 276C ................................................ iv

Warning .................................................................................... v

Caution .................................................................................... vi

Getting Started .....................................................................1

Unit Overview .......................................................................... 1

Charging the GPSMAP 276C .................................................. 2

Turning On the GPSMAP 276C ............................................... 3

Getting Satellite Signals ......................................................... 4

Using the GPSMAP 276C ........................................................ 8

Simulator Mode ..................................................................... 11

Basic Operation In Marine Mode ......................................12

Marine Mode Page Sequence ............................................... 12

Navigating in Marine Mode ................................................... 13

Finding an Item ...................................................................... 16

Creating and Using Routes .................................................. 19

Creating and Using Waypoints ............................................ 24

Managing Your Tracks .......................................................... 35

Following a Marine Route ..................................................... 39

Marine Mode Pages and Features ...................................41

Map Page ................................................................................ 41

Compass Page ....................................................................... 47

Highway Page ........................................................................ 50

Active Route Page ................................................................. 52

Position Data Page ................................................................ 53

Basic Operation In Automotive Mode ..............................54

Automotive Mode Page Sequence ....................................... 54

Navigating in Automotive Mode ........................................... 55

Editing Your Route ................................................................ 58

Following an Automotive Route ........................................... 60

Automotive Mode Pages and Features ...........................61

Map Page ................................................................................ 61

Current Route Page ............................................................... 62

Trip Computer Page .............................................................. 63

Main Menu ..........................................................................64

GPS Tab .................................................................................. 64

Route Tab ............................................................................... 65

Points Tab .............................................................................. 65

Track Tab ................................................................................ 66

DSC Tab .................................................................................. 66

ii GPSMAP 276C Owner’s Manual

INTRODUCTION > TABLE OF CONTENTS

Sonar Tab ............................................................................... 70

Alarms Tab ............................................................................. 71

Calendar Tab .......................................................................... 73

Celestial Tab .......................................................................... 74

Message Tab .......................................................................... 78

Display Tab ............................................................................ 79

Sound Tab .............................................................................. 80

Setup Tab ............................................................................... 80

Setting Up and Using Sonar .............................................89

Showing Sonar on the Map Page ......................................... 89

Using the Sonar Page ........................................................... 90

Setting Up Sonar ................................................................... 93

Understanding Sonar ............................................................ 97

Appendix ..........................................................................101

Speciﬁcations ...................................................................... 101

Optional Accessories .......................................................... 102

Installation Information ....................................................... 103

Learning About GPS ........................................................... 107

LORAN TD Setup ................................................................. 109

Map Datums and Location Formats ...................................111

Digital Selective Calling (DSC) ........................................... 112

Messages ............................................................................. 114

Data Field Options ............................................................... 116

Software License Agreement ............................................. 118

Product Registration ........................................................... 118

Limited Warranty ................................................................. 119

FCC Compliance .................................................................. 120

Index .................................................................................121

GPSMAP 276C Owner’s Manual iii

INTRODUCTION > CARING FOR THE GPSMAP 376C

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. Avoid chemical cleaners and solvents that may damage plastic components.

Cleaning the Screen

The GPSMAP 276C screen should be cleaned using a soft, clean, lint-free cloth. Water, isopropyl alcohol, or eyeglass cleaner can be used if needed. If these are used, apply the liquid to the cloth and then gently wipe the screen with the moistened cloth.

Storage

Do not store the GPSMAP 276C where prolonged exposure to temperature extremes may occur (such as in the trunk of a car) as permanent damage may result. User information, such as waypoints and routes are retained in the unit’s memory without the need for external power. It is always a good practice to back up important user data by manually recording it or downloading it to a PC (transferring it to MapSource).

Water Immersion

The GPSMAP 276C is waterproof to IEC Standard 60529 IPX7. It can withstand immersion in 1 meter of water for 30 minutes. Prolonged submersion can cause damage to the unit. After submersion, be certain to wipe and air dry the unit before reuse or charging.

iv GPSMAP 276C Owner’s Manual

Warning

INTRODUCTION > WARNING

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).

Do not mount

where driver’s

ﬁeld of vision is

blocked.

Do not place

unsecured on

the vehicle

dash.

When navigating, carefully compare information displayed on the GPSMAP 276C to all available navigation sources, including information from street signs, visual sightings, and maps. For safety, always resolve any discrepancies or questions before continuing navigation.

The GPSMAP 276C contains a replaceable, rechargeable lithium-ion battery. The battery may present a risk of ﬁre or chemical burn if mistreated.

• Do not recharge out of the unit, disassemble, heat above 140°F (60°C), or incinerate.

• Keep used battery away from children.

• Only replace with Garmin Lithium-ion Battery Pack. Using another

Do not mount in front of an airbag

ﬁeld of deployment.

Always operate the vehicle in a safe manner. Do not become distracted by the GPSMAP 276C while driving, and always be fully aware of all driving conditions. Minimize the amount of time spent viewing the screen of the GPSMAP 276C while driving and use voice prompts when possible. Do not enter destinations, change settings, or access any functions requiring

battery may present a risk of ﬁre or explosion.

• Dispose of used battery or unit properly. Contact your local waste disposal department for information on properly disposing of lithium-ion batteries.

Use the electronic chart in the GPSMAP 276C only to facilitate, not to replace, the use of authorized government charts. Ofﬁcial government charts

and notices to mariners contain all information needed to navigate safely. prolonged use of the unit’s controls while driving. Pull over in a safe and legal manner before attempting such operations.

WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is being provided in accordance with California’s Proposition 65. If you have any questions or would like additional information, please refer to our Web site at

http://www.garmin.com/prop65.

GPSMAP 276C Owner’s Manual v

INTRODUCTION > CAUTION

Caution

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.

Use the GPSMAP 276C only as a navigational aid. Do not attempt to use the GPSMAP 276C for any purpose requiring precise measurement of direction, distance, location, or topography.

Map Data Information: One of the goals of Garmin is to provide customers with the most complete and accurate cartography that is available to us at a reasonable cost. We use a combination of governmental and private data sources, which we identify in product literature and copyright messages displayed to the consumer. Virtually all data sources contain inaccurate or incomplete data to some extent. This is particularly true outside the United States, where complete and accurate digital data is either not available or prohibitively expensive.

vi GPSMAP 276C Owner’s Manual

The Global Positioning System (GPS) is operated by the United States government, which is solely responsible for its accuracy and maintenance. The government’s system is subject to changes which could affect the accuracy and performance of all GPS equipment, including the GPSMAP 276C. Although the GPSMAP 276C is a precision navigation device, any navigation device can be misused or misinterpreted and, therefore, become unsafe.

GETTING STARTED > UNIT OVERVIEW

GETTING STARTED

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 TFT display that is easy to read in bright sun, a built-in basemap, and auto routing to provide you with automatically generated turn-by-turn directions.

GPS antenna

256-Color TFT display

with backlighting

Backlit keypad for easy nighttime operation

GPSMAP 276C Owner’s Manual 1

Detachable antenna

collapses for storage.

Be sure the antenna

is up (as shown here) to receive

satellite signals.

See the Appendix,

page 106, for

instructions on

removing the

antenna.

External power

connector under

weather cap

USB connector

under weather cap

Battery pack. Press tab down

to remove battery pack for replacement, if necessary.

Slot for optional

data card

Serial number

2 GPSMAP 276C Owner’s Manual

GETTING STARTED > CHARGING THE GPSMAP 276C

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. You can use the unit while it is charging.

If you do not want to use the unit, but you would like to charge the battery, you can put the unit into Charge Mode. Connect the unit to an external power supply. Press and hold the POWER key. Instead of completely turning off, the unit now goes into Charge Mode.

To charge the unit’s battery:

1. Lift the rubber weather cap to expose the power connector on the back of the unit. See the image on page 1 for connector location.

2. Align the notches and push the plug into the connector until fully seated.

3. Plug the 12 Volt adapter into an available AC outlet, or cigarette lighter receptacle if you have a cigarette lighter adapter. Use care when routing the cable; be certain that it does not interfere with vehicle operation.

NOTE: While in Charge Mode, the unit draws a small amount of

The unit begins charging as soon as external power is applied. Placing the unit in Charge Mode charges the unit more quickly than when the unit is turned on and reduces draw on the vessel or vehicle battery.

After using the unit a lot, you might notice that the lithium-ion

Information About Charge Mode

Applying external power to the GPSMAP 276C automatically turns on the unit for full operation. If the battery is present and needs to be charged, the external power source charges the battery while the unit

battery in the unit is not holding a charge any more. This is common for lithium-ion batteries. Contact Garmin or your Garmin dealer to order a battery pack replacement if you are experiencing charging issues with your battery.

is in use.

Charge Mode

current from the vessel or vehicle battery. To avoid discharging the vehicle’s battery, disconnect the external power cable from the GPSMAP 276C when not in use for several days.

GETTING STARTED > TURNING ON THE GPSMAP 276C

Turning 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. To 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. Before you turn on the unit to start initialization, be sure that the antenna is rotated up as shown on page 1, and it has a clear and unobstructed view of the sky to receive satellite signals.

Adjusting the Backlight and Volume

You can adjust the backlight to see the display better. If you are using the optional External Speaker with 12/24-Volt Adapter Cable with the GPSMAP 276C, you can adjust the volume level of the audio output.

To adjust the backlight level or volume:

1. Press and quickly release the POWER key.

2. Press up on the ROCKER to increase the brightness or

To turn the GPSMAP 276C on and off:

1. Press and hold the POWER key. When the unit turns on, a tone sounds and the Warning Page appears.

Warning Page

2. Read the warning, and then press ENTER to continue.

3. To turn off the GPSMAP 276C, press and hold the POWER key again.

3. Press ENTER or QUIT to close the Backlight/Volume

4. Press MENU to view the options menu.

press down to decrease. Press right to raise the volume or left to lower.

adjustment window.

Battery time remaining and power source indicator

Backlight

adjustment slider

Volume

adjustment slider

GPSMAP 276C Owner’s Manual 3

4 GPSMAP 276C Owner’s Manual

GETTING STARTED > GETTING SATELLITE SIGNALS

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. While the GPSMAP 276C is getting satellite signals, the GPS page shows the status as “Acquiring Satellites.”

It might take a few minutes to acquire satellites and display your current location on the map. To get signals more quickly, be sure the antenna is raised to the up position shown in the image on page 1.

Viewing GPS Status with the GPS Tab

The GPS tab on the Main Menu provides a visual reference of satellite acquisition, receiver status, and accuracy. The sky view and signal strength bars give an indication of what satellites are visible to the receiver and whether they are being tracked.

As the receiver locks onto satellites, a signal strength bar appears for each satellite in view, with the appropriate satellite number underneath each bar. The numbers below each bar represent the particular satellite that is being received. Numbers above 33 indicate WAAS satellites.

The sky view shows a birds-eye view of the position of each satellite relative to the receiver’s last known position. The outer circle represents the horizon (north up), the inner circle represents 45º above the horizon, and the center point represents a position directly overhead. You can also set the sky view to a Track Up conﬁguration, causing the top of the sky view to align along your current track heading. Press MENU to change the conﬁguration of the sky view.

GPS Tab

A power source indicator shows the unit is operating off

NOTE: While acquiring satellites, the Map Page may show the

wrong location, such as China. This does not mean your unit has the wrong data loaded; it means you need to wait a few more minutes to acquire satellites and ﬁnd your current location.

power ( ), that the unit is charging ( ), or that an external power source is in use ( ).

battery

GPSMAP 276C Owner’s Manual 5

GETTING STARTED > GETTING SATELLITE SIGNALS

Signal

strength bars

Sky view

GPS Status

Receiver

status ﬁeld

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.

• Green signal strength bars—the receiver has collected the

necessary data from this satellite.

When the GPSMAP 276C collects the necessary data from the best satellites in view to calculate a ﬁx, the status ﬁeld indicates the status of the receiver. The unit then updates the location, date, and time.

Receiver Status

The Receiver Status ﬁeld shows one of the following conditions:

• Searching the Sky—the receiver is looking for satellites.

• AutoLocate—the receiver is looking for any satellite whose almanac was collected, which can take up to ﬁve minutes.

• Acquiring Satellites—the receiver is looking for and collecting data from satellites visible at its last known or initialized location but has not acquired a ﬁx.

• 2D GPS Location—At least three satellites were acquired and a two-dimensional position ﬁx was calculated. “2D Differential” appears when you are receiving DGPS corrections in 2D mode, and a “D” appears on the strength bar of satellites being corrected.

• 3D GPS Location—At least four satellites were acquired and a three-dimensional ﬁx was calculated. “3D Differential” appears when you are receiving DGPS corrections in 3D mode, and a “D” appears on the strength bar of satellites being corrected.

• Lost Satellite Reception—the receiver is no longer tracking enough satellites for a 2D or 3D ﬁx.

• Receiver Not Usable—the receiver is unusable, possibly due to interference or abnormal satellite conditions. Turn the unit off and back on to reset.

• Simulating GPS—the receiver is in Simulator Mode.

• GPS Off—the GPS receiver is turned off.

GETTING STARTED > GETTING SATELLITE SIGNALS

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 Tips

While the receiver is gathering information, your location on the map might appear different from where you actually are located. As soon as the receiver gathers enough satellite information, your proper location appears on the map.

Any time you have traveled more than 600 miles with the GPS receiver turned off, the receiver may take longer than normal to initialize and ﬁnd your location.

The GPS receiver can lose satellite signals due to interference from such items as buildings, tunnels, and heavy tree cover. Monitoring

GPS Tab Options Menu

Start/Stop Simulator—starts and stops Simulator Mode, which is

the GPS status is recommended.

To learn about GPS, see

helpful when learning how to use your unit.

Enable/Disable WAAS—enables or disables WAAS capability. See page 108 of the “Appendix” for more information about WAAS.

Track Up Skyview/

North Up Skyview—orients the sky view

display on the GPS tab to North Up or Track Up.

New Altitude

—allows you to manually enter your altitude.

New Location—allows you to enter a new location automatically or using the map.

“Learning about GPS” on page 107.

6 GPSMAP 276C Owner’s Manual

GETTING STARTED > USING THE GPSMAP 276C KEYPAD

PAGE

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.

QUIT Key

• Press to cycle through the main pages in reverse sequence, revert to the previous value in a data entry ﬁeld, or cancel an unintended function.

ENTER/MARK Key

• Press to select a highlighted option.

• Press and hold to mark your current location as a waypoint.

MENU Key

• Press to open the options menu for the current page.

• Press twice to open the Main Menu.

POWER Key

• Press and hold to turn the unit on or off.

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).

ROCKER

• Press up, down, left, or right to highlight options and to enter data, or use to pan the arrow on the Map Page.

NAV/MOB Key

• Press to open the navigation menu.

• In Marine Mode, press and hold to start the MOB function.

In Automotive Mode, press and hold to show the

Next Turn page and announce the next turn when using the external speaker.

FIND Key

• Press to quickly search for and access user waypoints, cities, and other items used for navigation.

• Press and release to adjust the backlighting and external speaker volume.

GPSMAP 276C Owner’s Manual 7

8 GPSMAP 276C Owner’s Manual

GETTING STARTED > USING THE GPSMAP 276C

Using the GPSMAP 276C

This section explains how to enter and select information with the GPSMAP 276C.

Understanding Terms

The GPSMAP 276C’s advanced keypad system is designed to allow quick, convenient selection of navigation options and data entry. As you progress through this owner’s manual, you are directed to press a speciﬁc key or highlight a ﬁeld on the screen. When you

On-screen button press ENTER to select the button.

Scroll bar

screen, a scroll bar appears along the right side of the list. To scroll through a list, press up or down on the ROCKER.

Default—the factory setting saved in the unit’s memory. You can change the settings, but you can also revert to the factory (default)

settings when you select Restore Defaults. are directed to press a key, you should press and quickly release the key. If the key needs to be held down for a period of time to start a secondary function, the instructions will tell you to do so. When a ﬁeld is selected on the screen, it is highlighted in yellow. The position of the highlight is controlled by the ROCKER.

The following terms are used throughout this manual:

Highlight—move the highlighted area on the screen up, down, left, or right with the ROCKER to select individual ﬁelds. Moving the highlight to a given location allows you to make a selection, begin data entry, or scroll through a list.

Field—the location on a page where data or an option can be shown and entered. Select (highlight) a ﬁeld using the ROCKER to begin entering data or selecting options.

—use the ROCKER to highlight a button, and

—when viewing a list of items too long to appear on the

Field

Highlighted ﬁeld

On-screen buttons

GPSMAP 276C Owner’s Manual 9

GETTING STARTED > USING THE GPSMAP 276C

Selecting Options and Entering Data

To 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.

To exit a menu or return to the previous setting:

Press QUIT. The QUIT key moves backward through your

steps. Press QUIT repeatedly to return to the starting page.

To select an on-screen button:

On a page with on-screen buttons, use the ROCKER to

highlight an on-screen button, and press ENTER.

To select and activate an option:

1. From any page, press MENU. An options menu appears with a list of optional features for that page.

2. Use the ROCKER to move the highlight up, down, right, or left on the menu to the option you want.

3. Press ENTER to select the feature. Another window with more options might appear. If so, select an option, and press ENTER again.

On-screen

button

To mark your current location as a waypoint, press and hold ENTER/MARK until the New Waypoint Page opens.

To enter data in a data ﬁeld:

1. Use the ROCKER to highlight the data ﬁeld you want, and press ENTER to select the ﬁeld.

2. Press up or down on the ROCKER to select characters.

Selecting an option from an options menu

Press right to move to the next character or press left to move back to the previous character. If there are two lines of data, keep pressing right on the ROCKER to drop to the next line.

GETTING STARTED > USING THE GPSMAP 276C

Entering

data

Setup Tab Options Menu

TIP: To clear the entire data ﬁeld, highlight the left-most

character ﬁeld and press 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.

Restoring Default Settings

You can restore factory defaults for the following Main Menu tabs: Track, Alarms, Display, Sound, and Setup. For more information about the Main Menu, see the “Main Menu” section beginning on page 64.

To restore

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight a tab, and then press MENU to open the options menu.

10 GPSMAP 276C Owner’s Manual

default settings:

3. Highlight Restore Default, and press ENTER.

Using the Databases

Optional Garmin data cards and MapSource CD-ROMs enhance the versatility of your GPSMAP 276C. With optional MapSource City Select data, you can view listings of nearby restaurants, lodging, shopping centers, attractions and entertainment, and even retrieve addresses and phone numbers for any listed location.

The included USB Interface Cable or an optional PC Interface Cable (with a serial connector) is used to transfer MapSource CD-ROM data to the optional data card.

Visit the Garmin Web site at for compatible MapSource products.

http://www.garmin.com/cartography/

GPSMAP 276C Owner’s Manual 11

GETTING STARTED > SIMULATOR MODE

Simulator Mode

To 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.

WARNING: Do not attempt to navigate using Simulator Mode.

When the unit is set to Simulator Mode, the GPS receiver is turned off. Any satellite signal strength bars shown are only simulations and do not represent the strength of actual satellite signals.

Starting Simulator Mode

You can start Simulator Mode from the Setup tab or the GPS tab on the Main Menu.

To put the unit into Simulator Mode using the GPS tab:

1. Press MENU twice to open the Main Menu.

2. Highlight the GPS tab.

3. Press MENU to open the GPS tab options menu.

4. Highlight Start Simulator, and press ENTER.

Entering a New Location

Use the GPS options menu to enter a new location to simulate from.

To enter a New Location using the map:

1. Press MENU twice, and then highlight the GPS tab.

2. Press MENU to open the options menu.

3. Highlight New Location, and press ENTER.

4. Highlight Use Map, and press ENTER.

5. Use the ROCKER to move the panning arrow to the location

GPS tab

Starting Simulator Mode from the GPS tab

you want on the map, and press ENTER.

12 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN MARINE MODE > MARINE MODE PAGE SEQUENCE

BASIC OPERATION IN MARINE MODE

This section explains some of the more common operations you will perform with your GPSMAP 276C, such as navigating to a destination.

switch usage modes:

1. Press and hold the PAGE key. The Usage Mode menu appears.

2. Use the ROCKER to select either Automotive or Marine, and press ENTER.

Marine Mode Page Sequence

The GPSMAP 276C offers two usage modes, Marine Mode (default) and Automotive Mode. The main pages are linked together in a series that you can cycle through by pressing the PAGE key to move forward and the QUIT key to reverse. Each page also has an options menu that allows you to customize each page to your preferences and select features. To view the options menu, press the MENU key.

Marine Mode features ﬁve main pages: Map, Compass, Highway, Active Route, and Position Data. If you have a Garmin GSD 20 Sonar Module connected to the GPSMAP 276C, a Sonar Page is available.

The following examples show the main pages in Marine Mode with optional MapSource BlueChart detailed maps. Marine Mode is the default mode for the GPSMAP 276C. This manual ﬁrst addresses the page, such as the Map Page, as it appears in Marine Mode. The manual then describes the page as shown in Automotive Mode.

Map Page

Compass Page

Highway Page

Active Route Page

Position Data Page

Sonar Page

(Optional)

Navigating in Marine Mode

GPSMAP 276C Owner’s Manual 13

BASIC OPERATION IN MARINE MODE > NAVIGATING IN MARINE MODE

There are several ways to begin navigating to a point:

• Select a point on the map, and press NAV

• Press NAV

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.

Marine Mode and Automotive Mode are similar. Most of the features discussed here also apply to Automotive Mode.

Press NAV to open the Navigate menu, which contains the following options:

When you are actively navigating, you see a magenta line that always runs from your current location to the destination on the Map Page. You can use the Map Page, Compass Page, Highway Page, and Position Data Page to help navigate to your destination.

Initiating Navigation

There are several different ways to initiate navigation. Press the NAV key to open the Navigate menu. Using one of the navigation options, you can quickly create a route to your destination. In Marine Mode, you can initiate Man OverBoard (MOB) navigation, which places a waypoint in the location and then navigates you back to that location. You can also initiate navigation through the Find

Go To Point—

from the Find menu to navigate to.

Navigate Route—allows you to select a route to navigate. You can also activate a saved route through the Routes tab on the Main Menu. For information about routes, see page 19.

Navigate Track (TracBack)—

navigate. You can also activate a saved track through the Track tab of the Main Menu. For information about tracks, see page 35.

MOB (Man OverBoard)—creates a MOB waypoint and navigates to that location.

menu.

Navigate Menu in Marine Mode

allows you to select a waypoint or point of interest

allows you to select a saved track to

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BASIC OPERATION IN MARINE MODE > NAVIGATING IN MARINE MODE

To 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 NAV. Go To <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 To MAP Point is listed. Select Go To <point name> or Go To MAP Point, and press ENTER.

Navigate Menu

3. Follow the magenta route created on the Map Page. Follow the turn-by-turn route (auto-route) by using the Next Turns Page and Current Route Page. If you are using the external speaker, follow the voice prompts.

To start a new route using the Find Menu:

1. Press the NAV key to open the Navigate menu.

2. Highlight Go To Point, and press ENTER to open the Find menu.

3. From the Find menu, highlight Waypoints and press ENTER. (You can also choose to go to other points, such as Cities or Tide Stations from this list. The steps vary only slightly from those listed for Waypoints.)

4. Select a waypoint from the list, and press ENTER to open the Waypoint Review Page.

Waypoint Review Page

5. With the Go To button highlighted, press ENTER to begin navigation.

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BASIC OPERATION IN MARINE MODE > NAVIGATING IN MARINE MODE

To 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. Press ENTER when ﬁnished.

Finding an item using the Containing ﬁeld. The unit searches for items containing the letter combination you enter and shows them in the list.

4. Highlight the item from the list and press ENTER.

5. Press ENTER when the Go To button is highlighted.

For complete information about ﬁnding an item, see the “Finding an

Item” section.

Man OverBoard (MOB)

Use the MOB function to simultaneously mark your current location and create a direct route back to that location for quick response to emergency situations.

To activate the MOB function:

1. Press and hold the NAV/MOB key, or press the NAV/MOB key twice.

2. Press ENTER to conﬁrm and begin navigating to the MOB location.

When a MOB is activated, a MOB waypoint with an international MOB symbol is created, and the unit begins actively navigating to that point. Use any of the Navigation Pages to guide you back to the MOB point. The MOB waypoint is stored in the waypoint list and can be deleted like any other waypoint.

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BASIC OPERATION IN MARINE MODE > FINDING AN ITEM

Finding an Item

Use the Find menu to easily search the stored waypoints and points of interest. To open the Find menu, press the FIND key.

The Find menu is comprised of several default categories: Waypoints, Cities, Exits, Transportation, and Tide Stations. Additional categories appear depending on the optional BlueChart or MapSource data card in the unit.

Find Menu

Shown without additional BlueChart or

MapSource maps installed

Follow the directions on page 15 to search for an item near your current location and then route to it.

Using the Find From Feature

The Find option also supports a “ﬁnd from” feature that allows you to center your search around an item you have just found. For example, you search for Restricted Areas and the search shows an “Anchoring Prohibited” search result. If you press FIND again, you see “From Anchoring Prohibited” as the new search from point. You can also use the Find feature to center your search from any waypoint, route list entry, map item, or tide station. Highlight the item you want to ﬁnd from and press the FIND key.

To ﬁnd an item from another

1. Open the Map Page. Use the ROCKER to pan the arrow (pointer) to the location you want, and press FIND. The Find menu opens, showing “From Map Pointer.” The list of items is sorted to show items nearest the selected location.

2. Using the ROCKER, highlight a category from the list, and press ENTER.

3. Using the ROCKER, highlight an item from the list, and press ENTER. The item’s information page automatically opens, allowing you to save the item as a waypoint, show the item on the map, or automatically create a route to (Go To) the item.

location on the map:

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BASIC OPERATION IN MARINE MODE > FINDING AN ITEM

To 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. If you are actively following a route, you can also select one of the other options listed in the Find From list.

5. Select a reference location on the map, and press ENTER. The list shows items nearest to the new map location.

To ﬁnd an item near another item:

1. Press FIND. The Find menu appears

2. Highlight the item you want to Find From.

3. Press FIND. The Find menu opens again with items near the previously-selected item. Search for the item you want.

Recently Found Items

The Recently Found Page shows a list of the items you have searched for or gone to recently.

To view recently found items:

1. Press FIND. The Find menu appears.

2. Use the ROCKER to highlight Recently Found, and press ENTER. The Recently Found Page appears.

3. Press MENU to display the options menu.

Show Find History—allows you to toggle between showing the items you have searched for recently (Find History) and the items you have recently created a Go To for (Go To History).

Remove Point—removes the point that is highlighted in the list.

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BASIC OPERATION IN MARINE MODE > FINDING AN ITEM

Viewing the Information Page

Each item on the map and each item listed in the Find menu results list has an Information Page.

To view

1. Highlight a point on the map or in the search results list, and

An Information Page appears with details about the item in

2. Press PAGE or QUIT to exit the Information Page. You can

details about an item:

press ENTER.

a tabbed format. Depending on the type of item, additional options are available for viewing the item on the map, viewing a tide chart, viewing the list of maps on your data card, and viewing the next item in the search results list.

Map Feature Information Page

also highlight one of the on-screen buttons and press ENTER to perform that operation.

Find Menu Options

To view additional options for the Find menu, press FIND, and then press MENU. The following options are available:

Enable Auto Arrange—automatically arranges the Find menu. Disable Auto Arrange and Restore Default options appear when you select Enable Auto Arrange.

Near Other

compile the Find items lists. Using the ROCKER, move the map arrow to the location you want, and press ENTER.

Map Information—shows information about the detailed map data stored on the data card and allows you to select which maps appear on the Map Page.

Additional selections are included in the options menu when you are navigating:

Near Next

the route.

Near Destination

destination.

Near Current Route

active route.

—allows you to select a new location from which to

—compiles the Find items lists based on the next turn in

—compiles the Find items lists based on the route

—compiles the Find items lists based on the

GPSMAP 276C Owner’s Manual 19

BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES

Creating and Using Routes

Use the GPSMAP 276C to create and store up to 50 reversible routes, with up to 300 points each.

To create a route using the Find menu:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight the Route tab.

3. Press MENU to open the Route options menu. Select New

Creating a Route

Use the Route tab on the Main Menu to create routes. You can create routes two ways. The ﬁrst way is to select waypoints from the Find Menu, allowing you to see a list of the route points as you create the route. The second way is by selecting waypoints or map items from the Map Page, allowing you to see each route point graphically onscreen as you create the route.

Route Tab with the Route List

4. Press ENTER to ﬁnd items to add to the route. The Find

5. Using the methods discussed in the “Finding an Item” section

Route, and press ENTER, or highlight the ﬁrst available blank route slot, and press ENTER. The Route Review Page automatically opens, showing a blank route.

menu opens.

beginning on page 16, select a point to add to your route. When you ﬁnd an item, highlight OK and press ENTER to add the point to the route. Repeat until you have added all of the points to the route.

Creating a new route on Route Review Page

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BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES

To 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. Use the ROCKER to highlight Edit on Map, and press ENTER.

4. Use the ROCKER to highlight the location you want to add, and press ENTER.

If you selected an area of the map that is not a feature or

waypoint, a new waypoint is created for that location. Press ENTER on the New Waypoint Page to save the location as a waypoint and continue adding points to your route. You can edit the properties of this waypoint as you can with any waypoint.

Navigating a Saved Route

The Navigate Route option allows you to easily select and activate a saved route.

5. Repeat until you have added all points to the route.

6. When ﬁnished, press QUIT twice to return to the Route Review Page. Or Press MENU, highlight Edit as Text, and press ENTER to view the Route Review Page.

To navigate a saved route:

1. In Automotive Mode, press the NAV key.

2. Use the ROCKER to highlight Navigate Route, and press ENTER.

3. Highlight a route, and press ENTER.

Select a route

from list

Creating a new route on the map

Select the route you want to take.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES

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.

To 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.

3. With the Route Review Page open, highlight the route name ﬁeld at the top of the page, and press ENTER.

Enter a new Route name

here

Route Review Page

4. Use the ROCKER to enter the route name, and press ENTER.

To review individual route points:

1. Press MENU twice to open the Main Menu. Highlight the Route tab.

2. From the Route List Page, use the ROCKER to highlight the name of the route, and press ENTER.

3. From the Route Review Page, highlight a point, and press ENTER.

4. On the Point Review Page, choose Next (highlight the next point on the route list), Show Map (show the point on a map window), or Save (save the point as a waypoint) and press ENTER. If the route point is a user waypoint, you can edit any of the waypoint properties on the Waypoint Page (see the “Creating and Using Waypoints” section beginning on page 24 for details).

When you return to the Route Review Page, the next point in the route is automatically highlighted. You can review each point on the route by pressing ENTER repeatedly.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES

To 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. (The new point is added before the highlighted route point), and press MENU.

4. Highlight Insert Waypoint, and press ENTER. The Find Menu automatically opens for you to search for and select the point you want to add to the route.

5. On the Point Review Page, highlight OK, and press ENTER to add the new point to the route.

Route Review Page

To edit the route on the map:

1. Press MENU twice to open the Main Menu. Use the ROCKER to select the Route tab.

2. Select a route and press ENTER. Press MENU to open the Route Review Page options menu.

3. Highlight Edit on Map, and press ENTER.

4. Use the ROCKER to select a location on the route (the route turns white when the arrow is over the route), and press ENTER.

5. Use the ROCKER to drag the route to the new point location, and press ENTER.

Editing the route on the map

6. If the New Waypoint Page opens, edit the waypoint as needed, highlight OK, and press ENTER.

7. Repeat steps 4 through 6 until all points are added to the route. Press QUIT when ﬁnished.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES

You can enter information about your trip so the GPSMAP 276C can estimate information about your trip.

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. Enter the data for Speed and Fuel Flow. You also can enter the date and time of your departure. Press QUIT to return to the Route Review Page.

NOTE: Fuel ﬂow rates are measured in units per hour. System

setting changes for units of measure (statute, nautical, or metric) do not affect the fuel ﬂow measure. You should enter fuel ﬂow rates based on information for your vehicle (such as the operator’s manual or performance speciﬁcations), and note the units of measure (gallons or liters).

Using the Route Tab Options

The Route tab on the Main Menu shows all the routes currently stored in memory, along with a descriptive name for each route. Highlight a route and press MENU to open the options menu. From here you can activate the route, copy it, delete it, delete all routes, and create a new route. You can also set up the routes to manually transition to the next waypoint.

Manually Transitioning to the Next Waypoint

From the Route tab option menu, highlight Set Up Routes and press ENTER to set the route leg transition (or waypoint transition). Select Distance to enter a radius so that when you are within the entered distance, the GPSMAP 276C leads you to the next point on your route.

When you select Manual, you can transition to the next waypoint at any time while navigating a route. While you are navigating the route, open the Active Route Page. Press MENU. Highlight Next Route Waypoint, and press ENTER to have the GPSMAP 276C start routing you to the next point in your route.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Creating and Using Waypoints

Waypoints 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. You can add waypoints to routes and even create a Go To directly to the selected waypoint.

Save your current location as a waypoint by pressing and holding ENTER/MARK. You can also ﬁnd waypoints using the map or the Find menu, and then store them in the unit before ever leaving

Marking Your Present Location

Use the ENTER/MARK key to quickly capture your present location to create a new waypoint. You must have a valid position (2D or 3D) ﬁx to mark your present location. You can determine the satellite ﬁx by looking at the GPS tab on the Main Menu.

To mark your present location:

1. Press and hold ENTER/MARK until the New Waypoint Page appears, and then release it. A default four-digit name and symbol are assigned for the new waypoint.

home.

The GPSMAP 276C stores up to 3,000 alphanumeric waypoints with a user-deﬁned icon, comment, elevation, depth, and temperature available for each waypoint. Waypoints can be created using three basic methods:

• ENTER/MARK—allows you to quickly mark your present location.

• Graphically—allows you to deﬁne a new waypoint location from the map display using the ROCKER.

• Text Entry—allows you to enter a new waypoint’s location coordinates manually.

2. To accept the waypoint with the default information, use the ROCKER to highlight OK, and press ENTER.

To change any information on the New Waypoint Page,

highlight the appropriate ﬁeld, and press ENTER. After entering and conﬁrming your changes, highlight OK, and press ENTER.

New Waypoint Page

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Creating Waypoints Using the Map

You 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.

To create a new waypoint using the Map Page:

1. Press PAGE until the Map Page appears.

2. Use the ROCKER to move the arrow to the map location or map feature you want.

3. Press and quickly release ENTER/MARK to capture the arrow location. Pressing and holding ENTER/MARK marks your current location, not the arrow’s location.

If you have highlighted a map feature, an information page

appears after you press ENTER. Highlight Save, and press ENTER to save the map item as a waypoint. The New Map Waypoint Page appears.

4. To accept the waypoint with the default information, highlight OK, and press ENTER.

To change the any information on the New Map Waypoint

Page, highlight the appropriate ﬁeld, and press ENTER. After entering your changes, highlight OK, and press ENTER.

Map Feature Information Page

Select Save to save the feature as a waypoint.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Creating a Waypoint by Entering Coordinates

You 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. You can manually change the location coordinates in the New Waypoint Page to create a new waypoint or use the Create Waypoint selection in the User Points tab options menu.

To create a new waypoint by entering coordinates:

1. Press ENTER/MARK to create a waypoint (or use your favorite method discussed in previous sections). The new waypoint is created with the next available waypoint number and the receiver’s last know location as the default location.

2. On the New Waypoint Page, use the ROCKER to highlight the Location ﬁeld, and press ENTER.

3. Highlight the character you want to change in the Location ﬁeld.

location

4. Press up or down on the ROCKER to change the character. Repeat until the new location is entered. Use the ROCKER to enter location coordinates, and press ENTER when

ﬁnished.

To change any other information on the New Waypoint Page,

highlight the appropriate ﬁeld, and press entering your changes, highlight OK, and press ENTER.

Entering location coordinates..

ENTER. After

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Reviewing a Waypoint

After you create and store a waypoint, you can modify, review, rename, move, or delete it at any time using the Waypoint Review and Waypoint Edit Pages. These pages provide virtually the same information.

To access the Waypoint Review Page:

1. Use the ROCKER to highlight a waypoint on the Map Page.

2. Press ENTER to open the Waypoint Review Page. If the waypoint is located on a map feature or MapSource or BlueChart feature, the Waypoint Review Page might include additional tabs containing information about the other features at that location.

Waypoint Review Page

To access the Waypoint Edit Page:

1. Press MENU twice to open the Main Menu.

2. Highlight the Points tab.

Points Tab

3. Highlight the waypoint you want on the User sub tab, and press ENTER to open the Waypoint Edit Page.

If the waypoint is located on a map feature or MapSource or

BlueChart feature, the Waypoint Edit Page will not show the details of the other map features.

Use either of these methods to access the Waypoint Page so you can edit the waypoint. Press MENU when the Waypoint Page is open to access the Waypoint options menu.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Adding a Waypoint 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

Averaging the Waypoint’s Location

Average Location makes the unit take several sample location measurements for the waypoint and recalculate for a more accurate location reading.

selected waypoint is added to the current route before the route destination.

add a waypoint to the end of the route:

1. Open the Waypoint Edit Page, and press MENU to open the options menu.

Waypoint Options Menu

2. Select Append To Route from the options menu. The Select Route window appears.

3. Highlight a route or select New Route, and press ENTER.

4. Highlight OK, and press ENTER to save the waypoint.

NOTE: You must have a GPS satellite ﬁx before you can average

a waypoint’s location.

To calculate the average location:

1. Open the Waypoint Page, and press MENU to open the options menu.

2. Select Average Location from the menu, and press ENTER. The Average Location window appears. Watch the ﬁelds change as the unit calculates the average location of the waypoint.

Average Location Page

3. Press ENTER to save the location.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Projecting a Waypoint

You can also create a new waypoint by projecting the distance and bearing from a speciﬁc location to a new location.

To create a

1. Create a waypoint using your favorite method (discussed in previous sections). The new waypoint is created with the next available waypoint number and the receiver’s last known location as the default location.

2. Press MENU twice to open the Main Menu.

3. Highlight the Points tab.

4. Press MENU to open the New Waypoint Page options menu.

5. Highlight Project Location, and press ENTER.

new waypoint by projecting its location:

Project Location Menu

Enter the distance, bearing, and location.

6. To change the location from which you are projecting the new waypoint, highlight the From ﬁeld, and press ENTER. The Find Menu opens.

Select the point from which you will project your new

waypoint just as you would select a waypoint or point of interest. For more information see the “Finding an Item” section on page 16.

7. To adjust the distance that the new waypoint is projected beyond the original waypoint, highlight the Distance ﬁeld, and press ENTER. Enter the projection distance, and press ENTER.

To adjust the bearing that the new waypoint is projected from

the original waypoint, highlight the Bearing ﬁeld, and press ENTER. Enter the bearing, and press ENTER.

8. After you adjust all elements of the projected location, highlight Save, and press ENTER.

9. Make any other changes to the new waypoint data (such as the name or symbol); highlight OK, and press ENTER.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Editing a Waypoint

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.

Symbol ﬁeld

User Sub Tab

The total number of stored and available waypoints appears at the bottom of the User sub tab, with the stored waypoints arranged in alphanumeric order.

To start a Go To from the User sub tab:

1. Press MENU twice to open the Main Menu.

2. Select Points from the Main Menu, and then highlight User.

3. Highlight the waypoint you want in the list.

4. Press NAV to open the Navigate Menu. Highlight Go To

<Point Name>, and press ENTER.

To edit a waypoint:

1. Open the Waypoint Review or Waypoint Edit Page.

2. Highlight the waypoint name, symbol, or another ﬁeld you want to change, and press ENTER.

Name ﬁeld

Waypoint Page

3. Use the ROCKER to select a symbol or enter data, and press ENTER when ﬁnished.

To edit the next waypoint in the list:

1. After you edit the waypoint on the Waypoint Edit Page (shown above), highlight Next, and press ENTER. The Waypoint list appears with the next waypoint highlighted.

2. Press ENTER to edit that waypoint.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

Organizing Waypoints into Categories

You can organize your waypoints into categories to help you manage and use your waypoints. For example, you can create a Vacation category that stores all of the waypoints you will use for your upcoming vacation. When the vacation is over, you can delete all the waypoints in that category by pushing a few buttons. You can create up to 15 categories.

create a waypoint category:

1. From any of the waypoint pages or the Points tab, press MENU to open the options menu.

2. Select Edit Categories, and press ENTER. The Waypoint Categories window opens.

3. Highlight Add, and press ENTER.

Adding a new category

4. Use the ROCKER to enter a name for the category.

5. Highlight Save, and press ENTER.

When you create or edit a waypoint, you can select the category from the Category list on the Waypoint Page.

To assign a category to a waypoint:

1. Open the Waypoint Edit Page. (You can also change the category on the New Waypoint Page.)

2. Select the Category ﬁeld, and press ENTER.

Select the

category to

which you want

to assign this

waypoint.

Waypoint Page

3. From the list, select the category to which you want to assign the waypoint, and press ENTER.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

To delete a category:

1. With the Waypoint Categories window open, highlight the category you want to delete, and press MENU.

2. Highlight Delete Category, and press ENTER.

Waypoint Categories Options Menu

3. Press ENTER again to ﬁnish deleting the category.

To delete a waypoint from the User Points tab:

1. On the Points tab, use the ROCKER to highlight the

2. Press MENU, highlight Delete Waypoint, and press ENTER.

3. Press ENTER to conﬁrm.

Deleting Waypoints

You can delete waypoints from the waypoint list in the Points tab or from the Waypoint pages. To delete a waypoint from the Waypoint Page, use the ROCKER to highlight the on-screen Delete button, and press ENTER.

NOTE: When you delete a waypoint from the list, it cannot

be recovered from the unit. Back up important waypoints to a computer using the optional PC cable and interface software, such as MapSource, or write them down by hand.

To delete waypoints by symbol or category:

1. On the User sub tab, highlight the waypoint you want to

2. Highlight either Delete by Symbol or Delete by Category,

waypoint you want to delete.

A conﬁrmation message appears.

Deleting a waypoint

delete, and press MENU.

and press ENTER.

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

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.

Proximity Points

Use the Proximity sub tab to deﬁne an alarm circle around a stored waypoint location. The alarm circle can help you avoid reefs, rocks, or restricted waters. Up to 100 waypoints can be listed with a maximum alarm radius of 99.99 nautical miles, statute miles, or kilometers.

To delete waypoints by distance:

1. On the Points sub tab, highlight the waypoint to delete, and press MENU.

2. Highlight Delete By Distance, and press ENTER.

3. Select Less Than or More Than, and then use the ROCKER to enter the distance.

4. You can select a waypoint or point of interest as the From location. Highlight the From ﬁeld and press ENTER. From the Find menu, select a location, and press ENTER. When OK is highlighted, press ENTER.

5. Highlight Delete, and press ENTER to delete all waypoints within the set location. Choose Cancel or press QUIT to exit without deleting the waypoints.

If a proximity alarm circle overlaps an existing alarm circle, a “Proximity Overlaps Another Proximity Waypoint” message appears. Because the unit only alerts for one of the overlap points, use caution when navigating in these areas. If you enter an alarm circle overlap, you are only alerted to the closest proximity waypoint.

Proximity Sub Tab

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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS

To 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.

To add a proximity waypoint:

1. From the Proximity sub tab, use the ROCKER to highlight an empty line on the Proximity List, and press ENTER. The Find menu appears.

2. Select a waypoint or point of interest from the Find menu. With OK highlighted, press ENTER to select that point. (For complete information about selecting waypoints or points of interest from the Find Menu, see “Finding an Item” on page

16).

3. The distance ﬁeld is now highlighted. Press ENTER to begin entering the proximity radius.

4. Use the ROCKER to enter a distance value (up to 99.99 units), and press ENTER.

To clear one or all proximity waypoints from the list:

1. Press MENU twice to open the Main Menu.

2. Select the Points tab, and then highlight the Proximity sub tab.

3. Use the ROCKER to highlight the proximity waypoint to clear, and press MENU.

Proximity Points Tab Options Menu

4. To clear a single alarm, highlight Remove Point, and press ENTER. To clear all proximity waypoints, select Remove All,

and press ENTER.

5. Use the ROCKER to highlight OK, and press ENTER to conﬁrm.

Managing Your Tracks

GPSMAP 276C Owner’s Manual 35

BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS

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. For the best results, clear the track log before you start traveling because when the track log is full, new track points overwrite the oldest track points.

Track Tab

The percentage of memory used by the current track log appears at the top of the Active tab. After the track log is cleared, it shows zero percent. When the track log reaches 100%, the most recent track points start to overwrite the least recent track points (if Wrap is selected for Record Mode). To avoid losing track points, save the track log when it approaches the 99% mark.

You must ﬁrst save the track log before you can use the

Navigate

Track feature. The Save feature allows you to store up to 15 track

logs from certain times and dates.

Setting Up and Saving Your Tracks

The Track tab contains the following settings:

Record Mode—Wrap records over the oldest tracks when the track log reaches 100%. Fill records a track log until the track log is full (100%). When Off is selected, the unit does not record tracks.

Interval—Distance records track points after a speciﬁed distance has been traveled. Time creates track points after a speciﬁed time has elapsed. Resolution records track points based on the resolution. The higher the resolution entered, the more points the unit creates to

To access the Track tab:

1. Press Menu twice to open the Main Menu.

2. Use the ROCKER to highlight the Track tab.

make the track.

Value

—records a track according to the Interval and Value. Enter a

speciﬁc distance, time, or resolution.

Color—select a color for the track when it appears on the map.

36 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS

To clear the track log:

1. Press MENU twice to open the Main Menu.

2. Highlight the Track 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.

5. Press QUIT to exit.

To save the entire track log:

1. Press MENU twice to open the Main Menu.

2. Highlight the Track tab, and then highlight the Active sub tab.

3. Select Save, and press ENTER. A message appears asking if you want to save the entire track.

4. To save the entire track, highlight Yes, and press ENTER.

To save a portion of the track log:

1. Press MENU twice to open the Main Menu.

2. Highlight the Track tab, and highlight the Active sub tab.

3. Use the ROCKER to select Save, and press ENTER.

4. To save only a portion of the track, highlight No, and press ENTER when a message appears.

5. Select a beginning point, and press ENTER.

6. Select an ending point, and press ENTER. The Track Review Page automatically opens.

Saving a portion of the track log

7. Highlight OK and press ENTER to save the track.

8. Press QUIT to exit.

GPSMAP 276C Owner’s Manual 37

BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS

Saved Tracks

The Saved sub tab shows all of the saved tracks in your unit.

Saved Sub Tab

Press MENU to open the Saved tab options menu:

Review on Map—shows the highlighted track on the Map Page.

TracBack—navigates the track. You can either navigate the track as

it is saved, or you can navigate the track in reverse.

Delete Track—erases the highlighted track from the unit’s memory.

Delete All—erases all tracks from the unit’s memory.

To edit a track:

1. Press MENU twice to open the Main Menu.

2. Highlight the Track tab. Press right on the ROCKER to highlight the Saved sub tab.

3. Highlight the track you want to edit, and press Track Review Page opens. Make changes as needed.

Track Review Page

4. Highlight the Name ﬁeld, and press ENTER. Use the ROCKER to change the name, and press ENTER.

5. Select a different display color when the track appears on the map.

6. To show this track on the map, highlight the box next to Show on Map, and press ENTER.

7. To begin a TracBack, highlight TracBack, and press ENTER. For more information about the TracBack feature, see the next page.

8. To view the track on the map, highlight Map, and press ENTER. Press QUIT to return to the Track tab.

9. Highlight OK, and press ENTER to save the track. Press

QUIT to exit.

ENTER. The

38 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS

Navigating a Saved Track

You can save your track log to use later as a TracBack, which reduces your track log into a route with up to 300 turns. When initiated, a TracBack 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. Also, you must save an active track log before you can navigate it as a TracBack.

To activate a TracBack using the NAV

1. Press NAV, highlight Navigate Track, and press ENTER.

2. Highlight the track you want to navigate, and press ENTER.

key:

TracBack Tips

When a TracBack is initiated, the GPSMAP 276C divides the track into segments called legs. Up to 300 temporary turns are created to mark the most signiﬁcant features of the track in order to duplicate your exact path as closely as possible. To get the most out of the TracBack feature, remember these tips:

• Always clear the

• The

• If the track log

• If the receiver is turned off or satellite coverage is lost during

• If the changes in distance and direction of your track are too

Selecting a saved track

3. Use the ROCKER to select the point you want to navigate to (TracBack to), and press ENTER.

track log at the point that you want to go

back to (such as a dock or campsite).

Record Mode option on the Active sub tab must be set to

Fill or Wrap.

Interval option on the Active sub tab is set to

the Time option, the route might not navigate your exact path (keep the interval set to Resolution for best performance).

your trip, TracBack draws a straight line between any point where coverage was lost and where it resumed.

complex, 300 waypoints might not mark your path accurately. The receiver then uses the most signiﬁcant points of your track so there will be fewer changes in direction.

Following a Marine Route

GPSMAP 276C Owner’s Manual 39

BASIC OPERATION IN MARINE MODE > 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 Your Route on the Map Page

You can track the progress of your route on the Map Page. Your route is shown with a magenta line. For more information, see the

“Map Page” section beginning on page 41.

View Your Path on the Highway Page

Whenever a route is initiated, the Highway Page provides digital and graphic steering guidance to the destination. A compass ribbon appears at the top of the page to show your current heading, represented by the violet bar. The red vertical bar represents the bearing to your course. To stay on course, steer towards the red

Map Page

View Your Heading with the Compass Page

During active navigation, the Compass Page guides you to your destination with digital data ﬁelds and a graphic compass display with a bearing pointer. When the pointer is pointing straight up, you are heading directly to your destination. For more information, see the “Compass Page” section beginning on page 47.

vertical indicator (or arrows) until it lines up with the violet bar in the middle. The bottom section of the screen provides visual guidance to the waypoint on a graphic highway display. The line down the center of the highway represents your desired track line.

For more information, see the “Highway Page” section beginning on page 50.

Compass Page

BASIC OPERATION IN MARINE MODE > FOLLOWING A MARINE ROUTE

See Your 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. The active point is marked with an arrow icon. As you navigate a route, the list automatically updates to indicate the next active point.

For more information, see the “Active Route Page” section

Watch Your Trip Data on the Position Data Page

The Position Data Page provides a quick view of the important data you want to see while navigating a route in Marine Mode. The compass ribbon appears at the top of the page to show your current heading with a red, vertical bar. To stay on course, steer toward the violet bar (or arrows) until it is aligned with the red bar.

For more information, see the “Position Data Page” section beginning on page 53.

beginning on page 52.

Active Goto (Route) Page

Position Data Page

40 GPSMAP 276C Owner’s Manual

GPSMAP 276C Owner’s Manual 41

MARINE MODE PAGES AND FEATURES > MAP PAGE

MARINE MODE PAGES AND FEATURES

In Marine Mode, by default, four user-selectable data ﬁelds appear on the right side of the screen that can be conﬁgured to display any

This section discusses the major pages in Marine Mode, such as the Map and Compass pages, and some additional marine features,

one of the possible data options. You can also add additional data ﬁelds to the page or select a full screen map without data ﬁelds.

including DSC and the Marine Timer.

Map Page

Data ﬁelds

The GPSMAP 276C features a real-time moving map that can do much more than just plot your course. The Map Page shows map information (digital cartography) that includes navaids, lakes, rivers, coastlines, cities, and highways. Use the dedicated zoom keys (IN and OUT) to adjust the Map Page scale.

Two map operating modes, position mode and pan mode, determine

Current location

Map Page

Map scale

what cartography is shown on the map display. Position mode pans the map to keep your present location in the display area. The position marker

shows your travel on the Map Page. The GPSMAP 276C always turns on in position mode, with the last known location centered on the map. When you press the ROCKER, the GPSMAP 276C enters pan mode, which moves the map to keep the white arrow (map pointer) within the display area.

The system has a built-in worldwide database, with more detailed coverage available through the use of the BlueChart or MapSource

Changing the Page Layout and Data Fields

You can adjust how the following pages appear: Map, Compass, Highway, Position Data, Trip Computer, and optional Sonar Page. You can also adjust the data ﬁelds on each page.

To set up the

1. Press PAGE to display the page you want to change.

2. Press MENU to open the options menu.

3. Highlight Set Up Page Layout, and press ENTER.

page layout:

data. The GPSMAP 276C displays cartography as long as chart information is available for the zoom scale you selected.

42 GPSMAP 276C Owner’s Manual

MARINE MODE PAGES AND FEATURES > MAP PAGE

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

To change a data ﬁeld display:

1. Press PAGE to open the page you want to change.

2. Press MENU to open the options menu.

3. Highlight Change Data Fields, and press ENTER.

4. Highlight the data ﬁeld you want to change, and press ENTER.

5. Press up or down on the ROCKER to highlight the type of data you want to show, and press ENTER.

6. Press QUIT to exit.

Changing a data ﬁeld

Setting Up the Map Page

Use the Set Up Map option to adjust how items appear on the Map Page.

To change a map setup option:

1. On the Map Page, press MENU to open the options menu.

2. Highlight Set Up Map, and press ENTER.

3. Press left or right on the ROCKER to highlight a tab; press up or down on the ROCKER to highlight to the ﬁeld you want to change, and press ENTER.

Map Family

GPSMAP 276C Owner’s Manual 43

MARINE MODE PAGES AND FEATURES > MAP PAGE

highlighted.

Press ENTER

to view the

individual maps

in the family.

Setting up the Map Page

4. Press up or down on the ROCKER to highlight a setting, and press ENTER.

5. Press PAGE or QUIT to exit.

3. To change the setting for a map family, highlight the box next to the map family name and press ENTER to select (check mark) or deselect (no check mark) the Show setting.

Map Information Page

4. To view the list of maps within a map family, highlight the

Additional Map Data

name of the map family, and press ENTER.

You can view the data currently loaded on your GPSMAP 276C unit and data card.

To review/change

1. On the Map Page, press MENU.

2. Highlight Map Information, and press ENTER. The ﬁrst page shows the Map Families stored on the data card and unit and whether they are shown on the Map Page.

map information:

Individual Map Information Page

Showing the individual maps that are in the selected map family

MARINE MODE PAGES AND FEATURES > MAP PAGE

5. To 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. To 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. Or Press MENU, select one of the options (Show All, Hide All, or Show Defaults), and press ENTER.

7. Press QUIT to exit the Map Information page.

Map Orientation

There are three map orientation options: North Up orients the map like a paper map. Track Up orients the map in the direction of travel. Course Up orients the map so the direction of navigation is always up. When using Track Up or Course Up, the North arrow indicates the orientation.

Zooming In and Out of the Map

The map display has 28 available zoom ranges from 20 ft to 800 nm (20 ft to 800 mi or 5 m to 1200 km). The map scale is controlled by the IN and OUT keys, with the current scale shown at the bottom right of the data window.

The system has a built-in worldwide database, with more detailed coverage available through the use of the BlueChart or MapSource data. The GPSMAP 276C shows cartography as long as chart information is available for the zoom scale you selected.

Map coverage conforms to the following conditions:

To change the map orientation:

1. On the Map Page, press MENU to open the options menu.

2. Select Set Up Map, and press ENTER.

3. Select the map orientation in the Orientation ﬁeld on the General tab.

NOTE: The scale value represents the distance from one end of

the scale bar ( ) to the other.

To select a map scale (zoom in and out):

Press the OUT key to zoom out, press the IN key to zoom in.

• Cartography is shown when the selected zoom range is covered by either the internal basemap or other MapSource data loaded onto a data card.

• When the selected zoom range is covered by both the internal database and data card map information, the cartography with the best resolution appears.

44 GPSMAP 276C Owner’s Manual

GPSMAP 276C Owner’s Manual 45

MARINE MODE PAGES AND FEATURES > MAP PAGE

• When the selected zoom range exceeds the resolution of the data in use, “overzoom” appears below the map scale.

No additional data is available

Map feature

highlighted

• When external data (such as MapSource data) is used, “map card” appears below the map scale.

As you move the arrow, the distance and bearing from your present

Using detailed maps loaded on the data card

Panning the Map

The panning arrow allows you to pan the map to view other map areas. As you pan past the edge of the current map display, the screen moves to provide continuous map coverage. The position icon stays in your present location and might not be visible on the display screen when you pan the map.

location to the arrow appears in the data window, along with the arrow’s position coordinates. When you zoom in pan mode, the arrow stays centered on the screen. When the arrow is stationary, ﬁxed coordinates appear in the position ﬁeld, and the distance and bearing from your present location update as you move.

To re-center your position on the screen:

When you are ﬁnished panning the map, press QUIT. The

To pan the map:

Press up, down, right, or left on the ROCKER. The panning

arrow moves the map so you can view different parts of the map.

You can also use the arrow to select on-screen map items, which allows you to review a selected item directly from the map display.

Panning Arrow

data window:

Shows the

distance and

bearing from your present

location and

arrow’s position

coordinates.

Panning the Map

map automatically moves to show your present location, and the unit returns to position mode.

46 GPSMAP 276C Owner’s Manual

MARINE MODE PAGES AND FEATURES > MAP PAGE

To 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.

When a waypoint or map item is selected, it is highlighted on-

screen with the name and location shown at the top of the screen, along with the distance and bearing from your current location, as shown in the image to the left.

2. Press ENTER to view more information about the point. The information and on-screen buttons shown vary depending on the type of item selected. In some cases, additional information tabs appear at the top of the Information Page or Waypoint Page.

3. Use the ROCKER to highlight the extra tabs and view the information.

4. Select an on-screen button, and press ENTER.

5. Press QUIT to exit the information page.

Map Feature Information Page

Clearing Unwanted Details from the Map

You can remove items from the Map Page display (declutter the display) to remove unwanted items, such as highways.

declutter the Map Page:

1. On the Map Page, press MENU to open the options menu.

2. Highlight Declutter, and press ENTER.

3. Press ENTER again to restore the detail to the map display.

GPSMAP 276C Owner’s Manual 47

MARINE MODE PAGES AND FEATURES > COMPASS PAGE

Measuring Distance

You can measure the distance and bearing between two map items.

To 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 onscreen arrow appears on the map display at your present location with ENT REF below it.

3. Move the arrow to the reference point (the starting point that you want to measure from), and press ENTER. A push pin icon marks the starting point on the map display.

End point of

measurement,

Push pin

indicating the

beginning

point of the

measurement

labeled ENT

REF

Compass Page

During active navigation, the Compass Page guides you to your destination with a graphic compass display and a bearing pointer. Press PAGE repeatedly to display the Compass Page.

Rotating

compass ring

Compass arrow

The middle of the page features a rotating compass ring that shows your course over ground (track) while you are moving. Your present course over ground is indicated at the top of the compass ring. The direction of the destination (bearing) relative to the course over

Measure Distance

ground is indicated by an arrow in the middle of the compass ring and a course to steer “bug” on the outside of the compass ring. The

4. Move the arrow to the point want to measure to. The bearing and distance from the reference point and arrow coordinates appear in the data window at the top of the display.

5. Press QUIT to ﬁnish.

course to steer represents the direction to steer to get back to the course line.

Course to steer

indicator

Data ﬁelds

Compass Page in Marine Mode

MARINE MODE PAGES AND FEATURES > COMPASS PAGE

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: You must be moving for the compass to accurately

update and show your heading.

Turning On the Compass Page

The Compass Page is on by default in Marine Mode but off by default in Automotive Mode.

Compass Page Options

Use the options menu on the Compass Page to customize the Compass Page to your preferences. Like the Map Page, the Compass Page features user-selectable data ﬁelds. For deﬁnitions of data ﬁeld options, see to page 116. When the Compass Page is open, press

MENU to open the options menu.

Show Course Pointer/Show Compass—toggles between showing

the Course Pointer, which shows how far off you are from your course and how to get back on course, or shows the compass arrow. The Course Pointer is also referred to as a CDI or Course Deviation

To show the Compass Page in Automotive Mode:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight the Display tab.

3. Highlight the Compass Page ﬁeld, and press ENTER.

4. Select On, and press ENTER.

Indictor.

Show (Hide) Bug Indicator—shows the course to steer bug indicator (the purple tick mark on the compass ring).

Using the Marine Timer

The Marine Timer, speciﬁcally designed for sail boat racing, allows you to easily count up or down by speciﬁed time increments. As is common in sail boat racing, there is often a 5-minute warning countdown, followed by a 4-minute preparation countdown, and ﬁnally a one-minute ﬁnal countdown. Then during the race, mariners might want to count up to keep track of their time. By default, all of these different count downs and count ups can easily be performed

Turning on the Compass Page

with the GPSMAP 276C by pressing a few buttons.

48 GPSMAP 276C Owner’s Manual

You must change the Compass Page layout to use the Marine Timer.

To open the Marine Timer:

1. Press PAGE 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 Timer, and press ENTER. The Marine Timer appears in the lower right corner.

To use the Marine Timer:

1. Press the ROCKER up or down to select the time you want to count. Five (5) minutes is the default.

2. Press ENTER to start the timer. Use the ROCKER during the timing to quickly select a different length of time.

3. Press ENTER to stop timing.

MARINE MODE PAGES AND FEATURES > COMPASS PAGE

Marine Timer on the Compass Page

As discussed previously, the timer is set to count down ﬁve minutes. If you want to change the length of time and the behavior or the timer, open the Timers Setup tab on the Main Menu.

NOTE: You can set the timer countdown for up to 60 minutes.

To set the Marine Timer:

1. Press MENU twice to open the Main Menu.

2. Press down on the ROCKER to select the Setup tab, and then left to select the Timers sub tab.

3. Highlight Stop next to Marine to change the timer’s behavior.

4. Highlight the time ﬁeld, press ENTER, and then use the ROCKER to enter a new time.

GPSMAP 276C Owner’s Manual 49

50 GPSMAP 276C Owner’s Manual

MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE

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 PAGE repeatedly to open the Highway Page.

Using the Highway Page

To stay on course, steer toward the violet bar (or arrows) until it lines up with the red bar in the middle. The bottom section of the screen provides visual guidance to the waypoint on a graphic highway display. The line down the center of the highway represents your desired track line.

Highway Page

When you are navigating, the Highway Page provides digital and graphic steering guidance to the destination. The right side of the Highway Page features user-selectable data ﬁelds showing useful navigation information. A compass ribbon appears at the top of the page to show your current heading. The violet bar and the red vertical bar on the compass ribbon indicates the bearing to your course.

As you head toward your destination, the highway perspective moves to indicate your progress to the waypoint and which direction you should steer to stay on course. If you are navigating a route, the Highway Page shows each route waypoint in sequence connected by a black “road” with a white line down the middle, which is your desired track line. Nearby waypoints not in the active route can also be shown. You can zoom in or out to display a larger or smaller view of the highway.

To hide or show the Highway Page:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight the Display tab.

3. Highlight the Highway Page ﬁeld, and press ENTER.

4. Select Off to hide or On to show, and press ENTER.

To change the highway perspective scale:

Press IN to zoom in; press OUT to zoom out.

GPSMAP 276C Owner’s Manual 51

MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE

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

The following options are available from the Highway Page options menu:

Set Up Page Layout—choose the number of data ﬁelds that appear on the Highway Page.

of useful data. You can customize the layout to show additional data ﬁelds.

Change Data Fields—specify the type of data shown in each data ﬁeld on the Highway Page. This option is available from any of the

To display and select the Highway Page Options:

1. Press PAGE repeatedly until the Highway Page appears.

2. Press MENU.

3. Use the ROCKER to highlight an option, and press ENTER.

main pages. See page 116 of the “Appendix” for a listing of the data ﬁelds.

Set Up Highway—shows an options menu with two tabs: Line and Waypoint. Each tab has on/off settings for several options, such as enabling the line for the Active Leg and Track Log.

Highway Page Options Menu

Set Up Highway

52 GPSMAP 276C Owner’s Manual

MARINE MODE PAGES AND FEATURES > ACTIVE ROUTE PAGE

Active Route Page

When you initiate a route in the GPSMAP 276C, the Active Route

Active Route Page Options

The following route options are available by pressing MENU:

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. As you navigate a route, the list automatically updates to indicate the next active point. The Active Route and Route Review Pages share many of the same features and options.

Press PAGE repeatedly to open the Active Route Page.

Deactivate—stops route navigation.

Edit on Map—allows you to edit the route on the map. See page 22.

Add Waypoint—

add a point(s) to the end of the route.

Remove Waypoint—

Active Route Page

Invert—reverses the order of the route.

Plan Route—allows you to enter information about your route to

more accurately provide you with arrival times.

Active Route Page Options Menu

inserts a point before the highlighted waypoint or

deletes the selected waypoint from the route.

Change Data Fields—allows you to customize the data ﬁelds shown on the Active Route Page.

GPSMAP 276C Owner’s Manual 53

MARINE MODE PAGES AND FEATURES > POSITION DATA PAGE

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. The compass ribbon appears at the top of the page to show your current heading with a red, vertical bar. To stay on course, steer toward the

Position Data Page Options

With the Position Data page open, press MENU to open the options menu. You can customize the layout of the page and change the data ﬁelds. For an explanation of the data ﬁelds, see page 116 in the

“Appendix.” You can also select one of the following options:

Change Nearest Type

be used as the nearest item (shown in the lower-left data ﬁeld). The choices change based on the current Usage Mode.

violet bar (or arrows) until it is aligned with the red bar.

Reset Trip

Press PAGE repeatedly to open the Position Data Page.

the odometer.

Reset Max Speed—clears the maximum speed.

Reset Odometer—clears the running total of the distance traveled

Your present location

is 5.6 nm west of

Coronado, CA

since the odometer was last reset.

Reset All

and odometer.

Position Data Page

—allows you to specify the type of item to

—clears trip information, except the maximum speed and

—clears all trip information including the maximum speed

54 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN AUTOMOTIVE MODE > AUTOMOTIVE MODE PAGE SEQUENCE

BASIC OPERATION IN AUTOMOTIVE MODE

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. See the Marine Mode sections for operations and information not found in this section.

Automotive Mode Page Sequence

Automotive Mode features two main pages: Map and Trip Computer. Optional Highway and Compass Pages can be turned on in Automotive Mode. Two additional pages appear during active navigation while in Automotive Mode—a Current Route Page appears if you are navigating a turn-by-turn route and an Active Route Page appears if you are navigating off road. See “Navigating in Automotive Mode” on the next page for more information.

Map Page

Compass Page

(Optional)

Current Route Page

(Optional)

Trip Computer Page Highway Page

To switch usage modes:

1. Press and hold the PAGE key.

2. Use the ROCKER to select either Automotive or Marine, and press ENTER.

GPSMAP 276C Owner’s Manual 55

BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE

Navigating in Automotive Mode

When you initiate navigation in Automotive Mode, the GPSMAP

To go to a highlighted map item:

1. Use the ROCKER to highlight the item you want to navigate

276C automatically generates a turn-by-turn route. In some instances, you may need to select the Follow Roads option to

2. Press NAV. Go To <point name> is added to the list of

generate a turn-by-turn route.

When you are actively navigating, you will see a magenta line that always runs from your current location to your destination or to the next turn on the Map Page. You can use the Map Page, Compass Page, Highway Page, and Position Data Page to help navigate to your destination.

Initiating Navigation

There are several ways to begin navigating to a point:

• Select a point on the map and press the NAV key.

• Press the NAV Menu, or activate a saved route or track.

• Press the a route to it.

key to activate a new route using the Find

FIND key to search for a particular item and create

3. Follow the magenta route created on the Map Page. Follow

to on the Map Page.

options and automatically highlighted. If you have selected an area of the map that is not a map feature Go To MAP

Point is listed. Select Go To <point name> or Go To MAP Point, and press ENTER.

Navigate Menu

With Map Feature highlighted

the turn-by-turn route (auto-route) by using the Next Turns Page and Current Route Page. If you are using the external speaker, follow the voice prompts.

56 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE

To create a new route:

1. Press NAV to open the Navigate menu.

2. Highlight New Route, and press ENTER.

3. From the Find menu, highlight Waypoints, and press

ENTER. (You can also choose to go to other points, such as Cities or Exits from this list. The steps vary only slightly from

those listed for waypoints.)

4. Select a waypoint from the list, and press ENTER to open the Waypoint Review Page.

Waypoint Review Page

Activating a Go To using the Find menu

5. Highlight the Go To button, and press ENTER to begin navigation.

To go to a destination using the Find menu:

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 which contain the letters you are entering. Press ENTER when ﬁnished.

3. Highlight the item you want from the list, and press ENTER.

4. Highlight the Go To button, and press ENTER.

For complete information about ﬁnding an item, see the “Finding an

Item” section on page 16.

BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE

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.

To follow a saved route in Automotive Mode:

1. Press NAV to open the Navigate menu.

2. Highlight Navigate Route, and press ENTER.

3. Highlight the route you want to navigate, and press ENTER. The Active Route Page automatically opens with the route activated.

4. Press MENU to open the options menu.

5. Highlight Follow Roads, and press ENTER to create a turn-by-turn route (auto-route), which appears on the Current Route Page.

Stopping and Resuming Navigation

At any time when you are navigating to a point, you can stop navigation. For example, if you are on a long car trip, but you want to stop for dinner, you can stop navigation and resume after dinner.

To stop navigation:

1. While navigating to a point, press NAV.

2. Use the ROCKER to highlight Stop Navigation, and press

You can also initiate a saved route from the Route tab on the Main Menu.

To resume navigation:

1. Press NAV.

2. Use the ROCKER to highlight Resume Navigation, and

ENTER.

Navigate Menu in Automotive Mode

press ENTER.

GPSMAP 276C Owner’s Manual 57

BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE

Editing Your Route

6. Move the arrow to the end point, and press ENTER. During

When you are navigating a route, you can edit that route. You can add areas and roads to avoid as well as temporary detours to your current route. You can also add stops along your trip, called Via Points.

While navigating, press NAV to open the Navigate menu.

Entering Custom Avoids

Custom avoids allows you to enter speciﬁc areas and roads that you want to avoid in your navigation. Custom avoids apply to all routes, but detours apply to only the active route. You can add custom avoids while you are navigating a route or before you navigate.

To enter a custom avoid:

1. Press NAV while navigating to a destination in Automotive Mode. Or Open the Map Page, and press MENU.

2. Select Custom Avoids, and press ENTER.

3. Press ENTER when the Add Avoid button is highlighted.

4. Select Avoid Road or Avoid Area, and press ENTER.

5. Use the ROCKER to move the arrow to the ﬁrst point in the avoidance area. Press ENTER to select the ﬁrst point.

7. When ﬁnished, highlight the OK button, and press ENTER.

Creating a Detour

If there is road construction or some other form of a detour while navigating a route, you can have your GPSMAP 276C create a detour route for you.

To create a detour:

1. While navigating a course, press NAV.

2. Select Detour from the Navigate menu.

3. Select a distance, and press ENTER. The GPSMAP 276C

route calculation and navigation, the GPSMAP 276C avoids the area within the box or the selected area of the road.

The selected roads are avoided.

will recalculate your course based on your detour distance.

58 GPSMAP 276C Owner’s Manual

GPSMAP 276C Owner’s Manual 59

BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE

Detour Distance

Showing the original route without Via Points

4. To end the detour manually, press NAV again, and select

Cancel Detour.

Adding and Editing Stops (Via Points)

You can add Via Points—points through which you would like to travel—to your route using the Edit Vias option. Via Points are great for adding a stop at the gas station or bank to your route and are really helpful when planning a long trip.

To add Via Points to your route:

1. While navigating your route, press NAV to open the Navigate menu.

2. Use the ROCKER to select Edit Vias, and press ENTER. The Add/Edit Vias window opens.

3. Highlight Add Via Point, and press ENTER.

4. From the pop-up window, highlight either Use Map or Use Find Menu, and press ENTER.

5. If you selected Use Map, use the ROCKER to select an item on the map, and press ENTER.

If you selected Use Find Menu, select an item from the Find

menu as discussed in the “Finding an Item” beginning on page 16. Remember you can press MENU while the Find menu is open to ﬁnd an item near another location, such as the destination. The new point is added to the route as shown on the Add/Edit Vias Page.

6. Repeat steps 3 through 5 until you have added all of the Via Points that you want. Highlight Done, and press ENTER to apply the new Via Points to the route.

Add/Edit Vias Page

60 GPSMAP 276C Owner’s Manual

BASIC OPERATION IN AUTOMOTIVE MODE > FOLLOWING AN AUTOMOTIVE ROUTE

Following an Automotive Route

The GPSMAP 276C guides you to your destination using many tools, such as the Map Page and Current Route Page.

Track Your Progress with the Map Page

You can track the progress of your route on the Map Page. Your route is shown with a magenta line. The next turn is shown in the top bar on the Map Page.

Next turn

Map Page showing your route.

Watch Your Trip Data

Use the Trip Computer Page to view your trip data. You can track your speed here, as well as other information related to your trip.

See Your Next Turn With the Current Route Page

Whenever you have initiated a turn-by-turn route in the GPSMAP 276C set in Automotive Mode, the Current Route Page shows each turn of the active route.

Current Route Page

GPSMAP 276C Owner’s Manual 61

AUTOMOTIVE MODE PAGES AND FEATURES > MAP PAGE

AUTOMOTIVE MODE PAGES AND FEATURES

Press the zoom keys (IN and OUT) to change the map scale. Some items on the map appear only if the map is zoomed in to a certain

This section discusses the major pages in Automotive Mode, such as

level.

the Map Page, as well as some additional features, such as Routes and Points. For information about pages and features not discussed

• Press

here, see the “Marine Mode Pages and Features” section.

• Press

Map Page

See page 41 in the “Marine Mode Pages and Features” section for

• Show and hide the heading line from the options menu.

• Use the

more information about the Map Page.

In Automotive Mode, by default, four user-selectable data ﬁelds

• Change the page layout and data ﬁelds to customize the Map

appear on the right side of the screen that can be conﬁgured to show any one of the possible data options. The top of the screen shows the GPS status or the route leg. You can also add data ﬁelds to the page or select a full-screen map without data ﬁelds.

Data ﬁelds

Current location

Map scale

ENTER to quickly declutter (remove unwanted items)

from the Map Page.

MENU to open the options menu for the Map Page.

ROCKER to measure the distance between two

objects on the map.

Page.

Map Page

62 GPSMAP 276C Owner’s Manual

AUTOMOTIVE MODE PAGES AND FEATURES > CURRENT ROUTE PAGE

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. As you navigate a route, the turn list automatically updates to indicate the next turn at the top of the list.

Saving the Current Route

You can save the current route from the Current Route Page. Press MENU to save the route. Press ENTER when Save Route is highlighted. Your route is automatically saved, using the starting

Current Route Page

You can scroll through the entire list by moving the scroll bar up or down. Highlight any of the turns on the list and press ENTER to view the Next Turn Page for that turn. The Current Route and Next Turn Page show similar information using a different layout. The Next Turn Page shows your next turn on a map.

point and destination as the route name. Press ENTER when OK is highlighted to complete saving the route.

Next Turn Page

GPSMAP 276C Owner’s Manual 63

AUTOMOTIVE MODE PAGES AND FEATURES > TRIP COMPUTER PAGE

Trip Computer Page

The Trip 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.

Trip Computer Page Options Menu

The following options are available from the Trip Computer options menu. Some options are only available if you have changed the page layout. Press MENU to open the options menu. Highlight an option, and press ENTER.

Trip Computer Page

Reset the Trip Computer before beginning a trip. If you make frequent stops, leave the GPSMAP 276C turned on in order to receive satellites. This allows the unit to accurately measure elapsed time during the trip.

Set Up Page Layout—allows you to choose the layout and number of data ﬁelds. You can change the layout of the Trip Computer Page to the Dashboard layout while still in Automotive Mode. Then you change the data ﬁelds on the Dashboard while in Automotive Mode.

Select the Reset options to reset the maximum speed, the odometer, everything but the max speed and odometer, or reset everything in the trip computer.

Trip Computer Page Options Menu

MAIN MENU > GPS TAB

MAIN MENU

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

GPS Tab

The GPS tab provides a visual reference of satellite acquisition, receiver status, and accuracy. The sky view and signal strength bars give an indication of what satellites are visible to the receiver and whether they are being tracked. For more information about GPS, see pages 4-6.

To select a tab from the Main Menu:

1. From any page, press MENU twice to open the Main Menu.

2. Press up or down on the ROCKER to highlight the tab you want. The information for the highlighted tab automatically appears on the right. To highlight a sub tab, press left or right on the ROCKER, and then press up or down to select individual ﬁelds.

Main Menu—GPS Tab

64 GPSMAP 276C Owner’s Manual

MAIN MENU > ROUTE AND POINTS TAB

Route Tab

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.

Main Menu—Route Tab

Points Tab

The Points tab contains two sub tabs, User and Proximity, which allow you to manage a large number of waypoints quickly and efﬁciently. For more information about waypoints, see the “Creating

and Using Waypoints” section beginning on page 24.

User Sub Tab

The User sub tab shows a master list of all waypoints currently stored in memory. The total number of stored and available waypoints appears at the bottom of the User sub tab.

Proximity Sub Tab

Use the Proximity sub tab to deﬁne an alarm circle around a stored waypoint location.

Main Menu—Points Tab

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66 GPSMAP 276C Owner’s Manual

MAIN MENU > TRACK TAB AND DSC TAB

Track Tab

Use the Track 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 Track tab is divided into two sub tabs: Active and Saved. For more information about tracks, see the “Managing Your Tracks” section beginning on page 35.

Main Menu—Track Tab

DSC Tab

The DSC tab (Marine Mode only) allows you to control and set up the Digital Selective Calling (DSC) features on the GPSMAP 276C. DSC uses marine VHF radio and GPS technologies to transmit and receive location information. DSC is used by mariners for two major operations: distress calls and position reporting.

For more information about DSC and Maritime Mobile Service Identity (MMSI) numbers, see pages 127-128 in the “Appendix”.

Active Sub Tab

The Active sub tab is for the active log (the log currently being recorded.) It shows the amount of track memory used and current settings.

Saved Sub Tab

The Saved sub tab shows a list of all saved tracks in your unit.

DSC Page

GPSMAP 276C Owner’s Manual 67

MAIN MENU > DSC TAB

Understanding Distress Calls

With 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. Distress calls are broadcast to all DSC users in radio range and appear with a blue and white checkered icon on the DSC Call List and Log tabs.

You can enter a caller’s name, if it is known. The caller’s name

Each entry in the Call List and Log has a corresponding DSC Entry Review Page. This page operates similarly to the Distress Page and Position Report Page. From the DSC Entry Review, you can Delete the entry, Save it as a waypoint, or show the location on the map.

To review a call or log entry:

1. Open the Call List or Log from the DSC tab.

2. Press up or down on the ROCKER to highlight the call you

3. Press ENTER to open the DSC Entry Review Page.

replaces the MMSI number as a reference once entered.

Understanding Position Reports

The Position Report operates similarly to the distress call. This type of contact is like a phone call; no emergency alarms are set off. Position reports are not broadcast to all DSC users and appear with a gold boat icon.

Receiving DSC Calls

Each time you receive a distress call or position report, a review page opens—either a DSC Position Report Page or a Distress Call Page. Both pages contain identical ﬁelds to the DSC Entry Review Page.

want to review.

DSC Entry Review Page

68 GPSMAP 276C Owner’s Manual

MAIN MENU > DSC TAB

DSC Call List

The Call List shows the 50 most recent calls, even if the unit is left unattended. The Call List only shows the most recent call from a vessel. If a second call is received, it replaces the ﬁrst call in the Call List. Press MENU to sort the list and delete entries.

DSC Call List

DSC Log

Receiving a Position Report or Distress Call

After you receive a Position Report or a Distress Call, you can quickly navigate to the location. Highlight a call from the Call List or Log and press Direct To. The top selection in the Navigate Menu is highlighted. Press ENTER to go to the location.

DSC Log

When DSC calls are received, they are automatically stored in the Log, with the latest call at the top. The unit can store up to 100 calls; after 100 calls are received, the oldest log ﬁle is removed when a

DSC Directory

The DSC Directory acts much like a phone book and can hold up to 50 entries. Pressing MENU from this page allows you to add a New Item, Delete a highlighted entry, or Delete All entries.

new call is received. Press MENU to sort the list and delete entries.

DSC Directory

GPSMAP 276C Owner’s Manual 69

MAIN MENU > DSC TAB

entries. Press

ENTER to

open the entry

review page.

Blank entry.

Press ENTER

to add a DSC

Directory entry.

Enter the

MMSI number,

name, and a

comment (if

needed) in the

ﬁelds.

Highlight OK

and press

ENTER to save

the Directory

Entry.

DSC Directory list

To 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. Or Press MENU, highlight New Item, and press ENTER.

3. Enter the MMSI number, the name, and any comments.

After creating a New Directory Item, the name created is attached to that particular MMSI number. If you return to the Log, the new name appears under the corresponding MMSI number.

Another way to input a name is from the Entry Review Page or the DSC Distress Call or DSC Position Report pages. The Name and MMSI are sent to other Garmin GPS units: Only the MMSI numbers are sent to other non-Garmin DSC users.

New Directory Item Page

4. When ﬁnished, highlight OK, and press ENTER.

Making a Distress Call

To make a Distress Call, press the MayDay button on your VHF radio. The call transmits on an emergency channel with the MMSI number attached to the call, if you have DSC support. Any DSCequipped mariner (on sea or land) within range can receive the call.

70 GPSMAP 276C Owner’s Manual

MAIN MENU > SONAR TAB

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.

Sonar Tab

The Sonar tab contains options for the Sonar Page. See the “Setting

Up and Using Sonar” section beginning on page 89 for more

information about Sonar setup options.

This Setup sub tab also allows you to simulate Distress Calls and Position Reports while the unit is in Simulator Mode (see page 11). Simulating calls is helpful for practice before connecting to the real system. The Distress Call simulator also helps to check if alarms are working properly.

DSC Setup

Main Menu—Sonar Tab

MAIN MENU > ALARMS TAB

Alarms Tab

Use the Alarms tab to deﬁne alarm settings. When an alarm goes off, 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.

Navigation (Nav) Alarms

The Nav sub tab contains the following alarms:

Next Turn Dist to enter a speciﬁc distance before you reach the next turn to

Main Menu—Alarms tab

To set an alarm:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Alarms tab.

3. Highlight the alarm name to set, and press ENTER.

4. Change the setting to On (or the setting you want, where available), and press ENTER. If necessary, highlight the next ﬁeld to the right, and press ENTER, specify the settings you want, and press ENTER to ﬁnish.

sound the alarm. Select Time to enter a speciﬁc time before the turn for the alarm to go off. Select Auto for the unit to provide a Next Turn alarm at its discretion.

Arrival—sets an alarm to sound when you are a speciﬁed distance or time away from a destination waypoint. Select Auto for the unit to provide an Arrival alarm at its discretion.

To set a persistent alarm:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Alarms tab.

3. Highlight the box next to the alarm you want to make persistent (for example, Next Turn).

4. Press ENTER to place a check mark in the Persist box.

When an alarm goes off, it sounds until you acknowledge the

alarm message by pressing ENTER.

—sets an alarm to indicate the next turn in a route. Select

GPSMAP 276C Owner’s Manual 71

MAIN MENU > ALARMS TAB

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.

Sonar Alarms

The Sonar sub tab contains the following alarms:

Shallow Water/Deep Water

enter an area of water that is too shallow or deep. Select On and then enter a speciﬁc distance. You must be receiving sonar NMEA

System Alarms

data for this function to work.

The System sub tab contains the following alarms:

Water Temp

Clock—sets an alarm based on the unit’s clock. Select On and then

enter a speciﬁc time that you want the alarm to sound. The unit must be on for the clock alarm to work.

Ext. (External) Voltage

—sets an alarm to sound when the external voltage drops below a speciﬁed amount. Select On and then enter a speciﬁc voltage.

DGPS—sets an alarm to sound when the unit loses a differential ﬁx.

Accuracy—sets an alarm to sound when GPS accuracy falls outside

has exceeded or dropped below a speciﬁc temperature, or fallen outside/inside a speciﬁc temperature range. Select Above or Below and then enter a speciﬁc temperature, or select Inside or Outside and enter a range of temperatures. You must be receiving sonar NMEA data for this function to work.

Drift—sets an alarm to sound when you exceeded a speciﬁed drift distance. Select On and then enter a speciﬁc distance.

Fish—sets an alarm to sound when ﬁsh are detected with sonar.

of the user-set value. Select On and then enter a speciﬁc distance.

—sets an alarm to sound when you

—sets an alarm to indicate if the water temperature

72 GPSMAP 276C Owner’s Manual

GPSMAP 276C Owner’s Manual 73

MAIN MENU > CALENDAR TAB

Calendar Tab

Use the Calendar tab to plan trips, view sun and moon, and hunting and ﬁshing information for the day.

Highlight an arrow, and press ENTER to change the date in the view.

3. Press

4. From the pop-up route list (or the Find menu if Add Point

MENU to open the options menu. Highlight Add Route

(or Add Point), and press ENTER.

was selected), select the route you want to add to the calendar, and press ENTER.

Day View Sub Tab

The Day View sub tab shows sunrise and sunset times for your current date and location. A list of points and routes for the day appear in a list, as shown to the left. You can select a different date by highlighting an arrow and pressing ENTER. Press MENU to display the options menu.

List of points

and routes

added to this

date.

Sunrise and set

times for the

current location

and date.

Week View Sub Tab

Calendar Tab in Day View

Calendar Options

The options menu is available in all three calendar views. Press MENU on any of the calendar views to open the options menu. To view the Sun & Moon Information or Hunt & Fish sub tab, highlight View Sun and Moon or View Hunt and Fish, and press ENTER.

To add a

1. Press MENU twice to open the Main Menu.

2. Highlight the Calendar tab. The current day appears on the

route (or point) to the calendar:

Day View sub tab.

The Week View sub tab provides many of the same elements as Day view, but the entire week is visible. Days with points or routes added to them are shown highlighted in green. Icons for the points and routes assigned to the date are shown along the bottom of the screen.

Month View Sub Tab

The Month View sub tab provides many of the same elements as Day view, but the entire month is visible. Days with points or routes added to them are shown highlighted in green. Icons for the points and routes assigned to the date are shown along the bottom of the screen.

74 GPSMAP 276C Owner’s Manual

MAIN MENU > CELESTIAL TAB

Celestial Tab

The Celestial tab shows tide information, sun and moon information, and hunting and ﬁshing information. You 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.

Main Menu—Celestial Tab

To access the Celestial tab:

1. Press MENU twice to open the Main Menu.

2. Highlight the Celestial tab.

3. Use the ROCKER to view the sub tab you want, such as

Sun & Moon.

Tide Sub Tab

The Tide sub tab contains a graphical chart that shows tide station information in a 24-hour span starting at midnight station time. You can choose from different dates and more than 3,000 tide stations.

Enter the date for which you want to

view the tide information.

Height of tide

Smallest and

largest tides

for the AM

hours

The top of the page shows the tide station and date being referenced. The chart shows a 24-hour block of time, with the time progressing from left to right. The solid vertical lines represent 4-hour increments; the dotted vertical lines represent 1-hour increments.

The tide curve appears as a shaded area; higher tides are taller and lower tides are shorter. The bottom of the page indicates the times with the highest and lowest tides.

Select the tide station for which you

want to view the information.

Time

Smallest and

largest tides

for the PM

hours

Tide Sub Tab

MAIN MENU > CELESTIAL TAB

To 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. The list is updated with your search requirements.

3. Select a tide station from the list, and press ENTER. The Tide Station Information Page appears.

4. Highlight OK, and press ENTER. The Tide tab appears again showing the tide chart for the selected tide station.

To view the tide chart for another date:

1. From the Tide sub tab with a chart open, highlight the On ﬁeld, and press ENTER.

2. ENTER the date with the ROCKER, and press ENTER. You can also use the zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to scroll quickly through dates.

3. Press ENTER when ﬁnished. The unit shows the chart for the date you entered or selected.

To use the current date again, highlight the Date ﬁeld. Press MENU, highlight Use Current Date, and press ENTER.

To view a chart’s details for another time during the day (other than current time):

1. From the Tide sub tab with the chart you want to view, press MENU, and then select Move Cursor.

2. Press the ROCKER right or left to view the chart at another time.

3. To return to the current time, press MENU, and select Stop

Moving Cursor.

To automatically start cursor mode to scroll the chart:

1. Use the ROCKER to highlight the Date ﬁeld. Then press down to start the pointer (pan) mode.

2. Scroll the chart right to view the next day or left to view the previous day.

Sun & Moon Sub Tab

The Sun & Moon sub tab provides you with sunrise/sunset and moon rise/set times. A graphic display of the moon phase also appears. You can view Sun & Moon information for any date or location. You can also use the play, fast forward, and stop buttons to view an animation of the Sun & Moon sub tab.

GPSMAP 276C Owner’s Manual 75

76 GPSMAP 276C Owner’s Manual

MAIN MENU > CELESTIAL TAB

To 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. You can also use the IN and OUT keys to view information for another date. Press and hold IN or OUT to scroll quickly through dates.

3. Press ENTER when ﬁnished. The unit shows the sun and moon information for the date you entered or selected.

To use the current date again, highlight the Date ﬁeld. Press MENU, highlight Use Current Date, and press ENTER.

Select the

date and

location

Animation

controls for the

sky view

Sun & Moon Sub Tab

Moon phase

Location of the

sun and moon

in the sky view

To view sun and moon information for a different location:

1. Use the ROCKER to highlight the From ﬁeld, and press ENTER.

2. Highlight Use Find Menu, and press ENTER. The Find menu automatically opens.

3. Select a waypoint or point of interest, and press ENTER.

4. On the waypoint information page, press ENTER. The unit shows the sun and moon information for the location you selected.

To use the current location, highlight the From ﬁeld. Press ENTER, highlight Current Location, and press ENTER again.

Hunt & Fish Sub Tab

The Hunt & Fish sub tab provides you with predictions of the best times to hunt and ﬁsh in a selected location on a speciﬁc date.

To display the Hunt & Fish information:

1. Press MENU twice to open the Main Menu.

2. Press up or down on the ROCKER to highlight the Celestial tab.

3. Use the ROCKER to select the Hunt & Fish sub tab.

Hunt & Fish Sub Tab

GPSMAP 276C Owner’s Manual 77

MAIN MENU > CELESTIAL TAB

To view hunt and ﬁsh information for a different location:

1. Use the ROCKER to highlight the From ﬁeld, and press ENTER.

2. Highlight Use Find Menu, and press ENTER. The Find menu opens.

3. Select a point, and press ENTER.

4. On the information page, press ENTER. The unit shows Hunt & Fish information for the selected location.

To 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. You can also use the zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to scroll quickly through dates.

3. Press ENTER when ﬁnished. The unit shows the information for the date you entered.

To use the current location:

1. Highlight the From ﬁeld, and press ENTER.

2. Highlight Current Location, and press ENTER.

To use the current date again, highlight the Date ﬁeld. Press MENU, highlight Use Current Date, and press ENTER.

78 GPSMAP 276C Owner’s Manual

MAIN MENU > MESSAGE TAB

Message Tab

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

To show or hide messages using the log ﬁlter:

1. Press MENU twice to open the Main Menu.

2. Highlight the Message tab.

3. Press right on the ROCKER to highlight the Log Filter sub

only the message types that you want to view.

Main Menu—Message Tab

4. Use the ROCKER to highlight the message type you want to

To view messages:

1. Press MENU twice to open the Main Menu.

2. Highlight the Message tab.

3. Use the ROCKER to highlight a message, and press ENTER to view detailed information about the message.

5. Highlight the message, and press ENTER to show it again.

tab. All messages appear by default.

Message Log Filter Tab

hide, and press ENTER. The message name appears in the Hide window.

GPSMAP 276C Owner’s Manual 79

MAIN MENU > DISPLAY TAB

Display Tab

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.

To access the Display tab:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight the Display tab.

The Display tab contains the following options:

Color Mode

Select Auto to automatically switch from day to night at sunset and change back at sunrise.

Main Menu—indicates whether the Main Menu tabs to contain text and icons (default) or text tabs only.

Backlight Timeout

on, or to time out after a selected period of time has elapsed when using the battery. The backlight stays on regardless of this setting when external power is used.

Twilight Adjustment

optimum viewing during twilight times.

Highway Page—indicates whether the Highway Page appears in the

Main Menu—Display Tab

main page sequence.

Compass Page—indicates whether the Compass Page appears in the main page sequence.

Backlight Intensity—turns the backlight up or down. Press right on the ROCKER to increase the intensity or left to decrease.

—sets the display to Day, Night, or Auto color mode.

—sets the backlight to stay on when it is turned

—allows the unit to adjust the backlight for

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MAIN MENU > SOUND TAB AND SETUP TAB

Sound Tab

Use the Sound tab to customize the sounds made by the unit.

To access the

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to highlight the Sound tab.

Beeper—sets the beeper to chime during keypresses and alarms (Key and Alarm) or on Alarms Only.

Attention Tone—turns on and off the attention tone that sounds before the vocal prompts.

Voice Prompt Status, Route Guidance Only, or No Voice Prompts.

Voice

Language—sets the language for vocal prompts.

Sound tab:

Main Menu—Sound Tab

—sets the vocal prompt to operate for Guidance and

Setup Tab

To customize how your GPSMAP 276C looks, use the System tab to adjust certain system settings.

System Sub Tab

Use the System sub tab to control settings for system mode, speed ﬁlter, language, and external power.

To access the System sub tab:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab.

3. Press right on the ROCKER to select System sub tab.

Main Menu—System Setup Tab

System Mode—sets the unit to operate in Normal mode, Battery Saver mode, or Simulator mode (for practice ONLY).

Speaker Volume

—sets the external speaker or headphone volume.

Usage Mode—sets the unit to operate in Marine (default) or

GPSMAP 276C Owner’s Manual 81

MAIN MENU > SETUP TAB

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).

Text

Language—sets the unit’s on-screen language.

WAAS—allows you to enable or disable WAAS.

External Power Off—indicates whether the GPSMAP 276C

remains on (Stay On) or the unit turns off (Turn Off) when external power is removed from the unit.

External Power On—indicates whether to turn on the GPSMAP 276C (Turn On) or charge the battery (Charge Battery) when external power is applied to the unit.

The Road Routing sub tab contains the following options:

Route Preference

• Faster Time—routes calculated are faster to drive but might be longer in distance.

• Shorter Distance—routes calculated are shorter in distance

Road Routing Sub Tab

—allows the unit to calculates routes based on:

but might take more time to drive.

Road Routing Sub Tab

Use the Road Routing sub tab to select road routing settings.

To access the Road Routing sub tab

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab.

3. Select the Road Routing sub tab.

• Off Road—creates a direct line from your current location to your destination. This is useful when traveling outside of the detailed map coverage area or where no roads exist.

Ask My Preference

—determines whether you are asked to select a

Route Preference before route calculations.

MAIN MENU > SETUP TAB

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.

• Better Route—generates an even better quality route but uses

Guidance Sub Tab

Use the Guidance sub tab to set guidance information.

To access the Guidance sub tab

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab, and then select the Guidance sub tab.

a longer calculation time.

• Best Route—generates the most optimal route but takes the longest time to calculate.

Calculate Routes for—sets route calculation for the particular vehicle you are operating to optimize the route for your vehicle type, as some roads have vehicle-based restrictions.

Avoid

—allows you to avoid certain road types and maneuvers on

Guidance Sub Tab

your route. The unit uses these road types only if alternative routes take you too far out of your way or if no other road is available.

Custom Avoids—allows you to enter speciﬁc areas and roads that you would like to avoid in your navigation. See page 58 for information on creating custom avoids.

Custom Road Prefs

—allows you to avoid or use Major, Medium, and Minor roads using a slider scale. This is useful if you want to avoid major highways, for example. Select Auto Set to use preset values.

82 GPSMAP 276C Owner’s Manual

Off-Route Recalculation—allows you to set whether the unit prompts you when it is recalculating your route (Prompted), or recalculates automatically. Set whether the unit announces the recalculation (Automatic - Announced) or recalculates silently (Automatic - Silent). You can turn the off-route recalculation Off.

Next Turn Pop-up—turns the Next Turn pop-up window

Off, or

opens the window when you press NAV (Held NAV Key Only), opens automatically (Automatically Only), or Both.

GPSMAP 276C Owner’s Manual 83

MAIN MENU > SETUP TAB

Timers Sub Tab

Use the Timers sub tab to set timers and view information about how long the unit has been on.

Time Sub Tab

Use the Time sub tab to set the time format and zone, and set the unit to conform to Daylight Saving Time. The current time and date appear in the Current Time and Date ﬁeld.

To 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.

Timers Sub Tab

User—allows you to set the timer to Count Up or Count Down. You can also Reset the timer and turn it Off. Enter a time to use when counting up or down.

Marine—appears on the Compass Page in Marine Mode. See page 48.

Since Midnight—shows the time the unit was turned on since midnight. To reset, select All Unit Defaults on the System sub tab.

To access the Time sub tab

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab, and then select the Time sub tab.

Time Sub Tab

Time Zone—choose the time zone for your city so the GPSMAP 276C shows the correct local time. Select Other to enter a UTC Offset.

If the wrong date appears, press MENU, highlight Set Date, and press ENTER. You are prompted to enter the current year. The GPSMAP 276C uses this information when gathering satellite data to show the correct date.

MAIN MENU > SETUP TAB

Units Sub Tab

Use the Units sub tab to customize measurement units.

To 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.

Location Sub Tab

Use the Location sub tab to change location setting information.

To access the Location sub tab

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab, and then select the Location sub tab.

See the “Appendix” for more information about location formats and map datums. Also visit the National Imagery and Mapping Agency at http://www.nima.mil for more information on grids and datums.

Changing the Location Format

Units Sub Tab

Distance and Speed—select the unit to show your speed and distance traveled.

Direction Display

—select the unit to show your direction. Mils is a unit of angle measurement used in military settings, in which 17.78 mils equal one degree.

Temperature

—select the unit to show the temperature.

Elevation—select the unit to show your altitude.

Depth—select the unit to show the depth.

84 GPSMAP 276C Owner’s Manual

When you change the Location Format, you change the coordinate system in which a given location reading appears. The default format is latitude and longitude in degrees, minutes, and thousandths of a minute (hddd°mm.mmm). Only change the location format if you are using a map or chart that speciﬁes a different location format or want to use a format you are familiar with.

Selecting a Different Map Datum

Datums are used to describe geographic positions for surveying, mapping, and navigation and are not actual maps built in the unit. Only change the datum if you are using a map or chart that speciﬁes a different datum.

GPSMAP 276C Owner’s Manual 85

MAIN MENU > SETUP TAB

The default setting is WGS 84. The unit automatically selects the best datum depending on your chosen location format.

WARNING: Selecting the wrong map datum can result in

substantial position errors. When in doubt, use the default WGS 84 datum for best overall performance.

Selecting a Different Heading Reference

You can select from Auto Mag Var, True, Grid, and User Mag Var. Auto Mag Var provides magnetic north heading references that are

automatically determined from your current location. True provides headings based on a true north reference. Grid provides headings based on a grid north reference (and is used in conjunction with the grid position formats). User Mag Var allows you to specify the magnetic variation at your current location and provides magnetic north heading references based on the variation you enter. Enter the magnetic variation of your current location in the Magnetic Variation ﬁeld if you selected User Mag Var for the heading.

WARNING: If User Mag Var is selected, the unit does not

automatically calculate and update the magnetic variation at your present location. You must update the magnetic variation as your location changes. Failure to update this setting can result in substantial differences between the information shown on your unit and external references, such as a magnetic compass.

Welcome Sub Tab

Use the Welcome sub tab to enter information, such as your name and address, or a welcome message that appears when the unit is turned on. This feature is helpful if your unit is ever misplaced.

To access the Welcome sub tab:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select Setup tab, and then select the

Welcome sub tab.

Welcome Sub Tab

To add a welcome message:

1. Press up or down on the ROCKER to highlight one of the Welcome Message ﬁelds, and press ENTER.

2. Use the ROCKER to enter information in the ﬁelds. You do not need to enter information in every ﬁeld. When ﬁnished, press ENTER again.

86 GPSMAP 276C Owner’s Manual

MAIN MENU > SETUP TAB

3. To 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. To hide the welcome information at start-up, clear the check mark.

Serial Data Format—sets the data format to one of the following:

• Garmin Data Transfer—provides the proprietary format used to exchange data with a computer or another Garmin GPSMAP 276C. Garmin Data Transfer is disabled when the

Com 1 and Com 2 Sub Tabs

Use the Com 1 and Com 2 sub tabs to change the data format and control the input/output format used when connecting your unit to external devices.

To access the Com 1 and Com 2 sub tabs:

1. Press MENU twice to open the Main Menu.

2. Use the ROCKER to select the Setup tab.

3. Press right on the ROCKER to select the Com 1 or Com 2 sub tab.

USB is connected, and the unit automatically switches to USB format. When the USB is disconnected, the USB ﬁeld changes to Transfer Mode.

• GARMIN DGPS—connects the GPSMAP 276C with a Garmin DGPS beacon receiver.

• Garmin Remote Sonar—connects the GPSMAP 276C with a GSD Sounder Module and transducer.

• NMEA In/NMEA Out—supports the input/output of standard NMEA 0183 version 3.01 data and sonar NMEA input support for the DBT, DSE,DPT, MTW, and VHW sentences.

• RTCM In—allows DGPS input using a standard RTCM format.

• RTCM In/NMEA Out—allows DGPS input using a standard RTCM format and also provides NMEA 0183 version 3.01 output.

Com 1 Sub Tab

• RTCM In/Text Out—allows Differential GPS (DGPS) input using a standard RTCM format and also outputs simple text data that includes, data, time, location, and velocity.

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MAIN MENU > SETUP TAB

• Text 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.

• None—provides no interfacing capabilities.

If you select GARMIN DGPS or RTCM In/NMEA Out format, you can control a differential beacon receiver directly from your

• Receiving—the unit is receiving DGPS signal and ready for operation.

• Check Wiring—the unit is not making connection with DGPS receiver.

Status of the

scan

GPSMAP 276C using the COM 1 sub tab. You can have the unit automatically scan for the DGPS beacon signal, or you can enter the beacon frequency and bit rate on the unit, and the information will be used to tune the beacon receiver. If you use a DGPS receiver, WAAS capability is automatically turned off.

To have the unit automatically

1. Set the unit to GARMIN DGPS or RTCM In/NMEA Out.

2. Highlight the Beacon ﬁeld, and press ENTER.

3. Highlight Scan, and press ENTER. The numbers in the Frequency ﬁeld change as the unit scans from 284 kHz to 325 kHz, 200 bit rate, then 100, at 6-second intervals.

scan for a frequency:

The Status ﬁeld shows one of the following:

• Tuning—the unit is attempting to tune to the speciﬁed

frequency and bit rate.

• Scanning—the unit is automatically scanning through the

frequencies and bit rates.

COM 1 sub tab with GARMIN DGPS selected

To restart the scan:

1. Press MENU.

2. Highlight Restart Scan, and press ENTER.

To manually enter a frequency and bit rate:

1. With the unit set to GARMIN DGPS or RTCM In/NMEA Out, use the ROCKER to highlight the Beacon ﬁeld, and press ENTER.

2. Highlight User, and press ENTER.

3. Highlight the Frequency or Bit Rate ﬁeld, and press ENTER

4. Enter a frequency or bit rate. Press ENTER when ﬁnished.

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MAIN MENU > SETUP TAB

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

3. Highlight the

4. Select NMEA In/NMEA Out, and press ENTER.

5. Press MENU to open the options menu. Select Advanced

data, depending on the signal being broadcast from the DGPS site.

NMEA Setup, and press ENTER.

Serial Data Format ﬁeld, and press ENTER.

The DGPS beacon transmitters are operated by the United States Coast Guard (or similar government agency in other countries), which is responsible for their accuracy and maintenance. For DGPS transmitter problems or to ﬁnd the most updated list of frequencies and coverage areas, contact your local USCG or see their Web site at

http://www.navcen.uscg.mil/.

Advanced NMEA Output Setup

If you are going to interface the GPSMAP 276C with another piece of equipment (such as a radar or autopilot), the unit needs to be set to output NMEA data. The NMEA data transmission can be customized to keep the output rate at two seconds. If too many NMEA sentences are activated, the unit may take longer than two

Use the Advanced NMEA Output Setup Page to set the output rate, change the precision of the Lat/Lon minutes, set Waypoint IDs to names or numbers, and turn on and off the GPS status, the GARMIN Proprietary sentences, and Waypoint/Route (WPL, RTE).

seconds to update. You can also set the Output Rate to Fast to output a minimum number of NMEA sentences at one-second intervals.

GPSMAP 276C NMEA Sentence Output (NMEA version 3.01 compliant):

To access the Advanced NMEA Output Setup:

1. Press MENU twice to open the Main Menu, and then select the Setup tab.

2. Select the COM 1 or COM 2 sub tab.

• Always transmitted: GPRMC, GPGGA, GPGLL, GPBWC, GPVTG, GPXTE, GPRMB

• Switchable sentences: GPGSA, GPGSV, GPWPL, GPRTE

• GARMIN proprietary: PGRME, PGRMZ, PGRMM

Advanced NMEA Output Setup

SETTING UP AND USING SONAR > SHOWING SONAR ON THE MAP PAGE

SETTING UP AND USING SONAR

This section covers the additional sonar options for the GPSMAP

4. Press

5. Highlight Map With Sonar, and press ENTER.

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. When you turn on your GPSMAP 276C, the Sounder Module automatically turns on.

NOTE: You MUST have a GSD 20 installed and connected to

your GPSMAP 276C to use the sonar features.

The Sonar Page is added to the end of the page sequence when you are in Marine Mode. To view the Sonar Page, press PAGE or QUIT repeatedly until it appears.

To resize the Map Page sonar split screen:

Showing Sonar on the Map Page

1. After displaying the Sonar and Map pages together in the

You can change the layout of the Map Page to display a split screen to show the sonar on the Map Page. You must be in Marine Mode to use sonar.

To display the Sonar Page on the Map Page:

1. Press and hold PAGE.

2. Highlight Marine, and press ENTER.

3. Press PAGE or QUIT to open the Map Page.

2. Highlight Size Split, and press ENTER.

3. Use the ROCKER to move the vertical double-arrow right or

4. To stop resizing the screen, press QUIT. You can also press

MENU. Use the ROCKER to highlight Set Up Page

Layout, and press ENTER.

Map Page with Split Screen

split screen as described in the previous steps, press MENU.

left, and press ENTER.

MENU, highlight Stop Resizing, and press ENTER to stop resizing the screen and retain the previous split setting.

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SETTING UP AND USING SONAR > USING THE SONAR PAGE

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 Turned Off” message appears across the Sonar Page. The Sonar Page appears only if a GSD 20 has ever been attached or when the unit is in Simulator Mode.

The sonar returns show as red (strongest), then orange (strong), yellow (medium), green (weaker), and blue (weakest). The Fish Symbols option allows you to view the actual sonar data, a ﬁsh symbol or a combination of both. When the unit is set to Dual, the appearance of the ﬁsh symbols changes. Fish symbols from the center of the beam (200 kHz) are solid (or narrow arches), but the returns from the edges of the beam (50 kHz) are hollow (or wide arches).

The middle of the page contains a right-to-left moving sonar image of the water beneath your boat. Items appear as they pass under your transducer. Those items on the right side of the screen are closer to you than those on the left. Along the right side of the screen is an adjustable scale that reﬂects the depth of the area being shown. The top left corner shows the adjustment option, the depth, and the water temperature.

The sonar display can also be set to show a split screen view of a zoomed portion of the sonar, bottom lock (display scaled from the bottom up), or a combination of these options. For example, you can choose to show dual frequency at a 2X zoom (Dual 2X) on one half and normal range dual frequency (Dual) on the other half. The current display mode appears at the bottom of each sonar display.

Read the “Understanding Sonar” section beginning on page 97 for more on information about sonar.

Adjusting the Sonar Page

Use the Adjustment menu to access the settings and features most commonly used on the Sonar Page. Ten main adjustment options are available: Range, Zoom, View, Gain, Target Level, Whiteline, Frequency, Depth Line, Noise Reject, and Scroll. Use the ROCKER

Sonar Page

90 GPSMAP 276C Owner’s Manual

and ENTER keys to make all adjustments. The currently selected option appears in the upper-left corner.

SETTING UP AND USING SONAR > USING THE SONAR PAGE

To 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. Use the ROCKER to highlight the adjustment, and press ENTER.

After you select an adjustment option, press the ROCKER up or down to change the setting.

You can also press

MENU and highlight a shortcut setting to

quickly change to commonly used settings and values.

Press ENTER to accept the new setting (or press QUIT to cancel) and return to the Sonar Page.

Adjustment Options

Scroll—adjusts the rate that the sonar display scrolls from right to left. If you are sitting still or the sonar display is moving too fast, slow the scroll rate or pause the scrolling.

Range—sets the display depth range used for viewing. The unit can be set to automatically track the bottom or set to a user-speciﬁed depth range.

Zoom—allows you to quickly select a display zoom scale or to split the display. When a scale other than

No Zoom is selected, the Adjustment Menu shows a new selection labeled View or Span. The Zoom function is divided into six display levels:

• 2X Split—shows two reduced-size sonar pictures at the same time. The right half of the display shows the complete sonar picture at its original scale. The left half shows a portion of the original picture at 1/2 depth scale.

• 2X Zoom—shows the 2X zoomed picture on the full screen.

• 4X Split—shows two reduced pictures, the right at the original depth scale and the left at 1/4 the original depth scale.

• 4X Zoom—shows the 4X zoomed picture on the full screen.

Sonar Adjustments

GPSMAP 276C Owner’s Manual 91

SETTING UP AND USING SONAR > USING THE SONAR PAGE

• 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.

TIP: Quickly zoom in and out of the Sonar display by pressing

the IN and OUT keys. Turn off the zoom function by pressing the OUT key until the No Zoom setting appears.

View/Span—changes the viewing range of a zoomed display. If the display is 2X or 4X split, only the zoomed portion on the left side of the display is affected by the change. If the display is Bottom Split or Bottom Lock, Span adjusts how far off the bottom the unit shows data. This option is available when a Zoom scale other than No

Zoom is selected.

Gain—allows you to control the sensitivity of the unit’s receiver,

which provides ﬂexibility in what appears. To see more detail, increase the receiver sensitivity by selecting a higher gain. If there is too much detail or if the screen is cluttered, select a lower gain.

Target Level

—adjusts which colors are used to show sonar

strong-signaled colors shown on the sonar display. A lower percentage results in more weaker-signaled colors shown on the sonar display. This setting does not increase or decrease the unit Gain.

Whiteline—controls how the unit shows information about the bottom type (hard or soft). With Whiteline Off, the bottom return shows as red. Set Whiteline at Normal or 1–100% to determine bottom hardness. See page 100 for more information.

Frequency—allows you to choose a transducer frequency. Frequency refers to the “pitch” of the sound that the transducer sends and receives.

Depth Line—adds a horizontal depth line across the display that is used to measure the depth of underwater objects. The depth of the line appears in a box on the right side of the line. Press Up or Down on the ROCKER to move the line on the sonar display.

Noise Reject—helps ﬁlter unwanted noise from the sonar display. The Noise Reject can be turned Off, set to Normal (automatically adjusts for optimum viewing) or to a ﬁxed 1–100% setting. When setting the Noise Reject, remember that a higher noise rejection setting is less likely to show ﬁsh or structures.

information. A Color Bar appears on the right side of the screen as you adjust this setting. A higher percentage results in more

92 GPSMAP 276C Owner’s Manual

Garmin CHARTPLOTTING RECEIVER 276C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

INTRODUCTION

Caring for the GPSMAP 276C

Warning

Caution

GETTING STARTED

Unit Overview

Charging the GPSMAP 276C

Turning On the GPSMAP 276C

Getting Satellite Signals

Using the GPSMAP 276C

Simulator Mode

BASIC OPERATION IN MARINE MODE

Marine Mode Page Sequence

Navigating in Marine Mode

Finding an Item

Creating and Using Routes

Creating and Using Waypoints

Managing Your Tracks

Following a Marine Route

MARINE MODE PAGES AND FEATURES

Map Page

Compass Page

Highway Page

Active Route Page

Position Data Page

BASIC OPERATION IN AUTOMOTIVE MODE

Automotive Mode Page Sequence

Navigating in Automotive Mode

Editing Your Route

Following an Automotive Route

AUTOMOTIVE MODE PAGES AND FEATURES

Map Page

Current Route Page

Trip Computer Page

Main Menu

GPS Tab

Route Tab

Points Tab

Track Tab

DSC Tab

Sonar Tab

Alarms Tab

Calendar Tab

Celestial Tab

Message Tab

Display Tab

Sound Tab

Setup Tab

SETTING UP AND USING SONAR

Showing Sonar on the Map Page

Using the Sonar Page