Garmin GPSMAP 276C GPS Receiver User Manual

GPSMAP 276C
®
chartplotting receiver
owner’s manual
© Copyright 2004 Garmin Ltd. or its subsidiaries
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 (www.garmin.com) for current updates and supplemental
information concerning the use and operation of this and other Garmin products.
Garmin®, GPSMAP®, AutoLocate®, TracBack®, BlueChart®, City Select®, and MapSource® are registered trademarks of Garmin Ltd. or its subsidiaries and may not be
used without the express permission of Garmin.
December 2004
Part Number 190-00335-00 Rev. B
Printed in Taiwan
INTRODUCTION > PREFACE
INTRODUCTION
Preface
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.
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 eleven 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 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 Additional Page and Features section describes pages and
features found in the Main Menu.
To learn how to change the settings of the GPSMAP 276C, read the
Customizing Your GPSMAP 276C section.
If you have a Garmin Sounder Module connected to you GPSMAP
276C, refer to the Setting Up and Using Sonar section.
The Appendix contains specifications, optional accessories,
maintenance information, and other product information. Read the
Safety Information for information about installing and using
your GPSMAP 276C safely and responsibly.
An Index is provided at the end of the manual for reference.
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.
GPSMAP 276C Owner’s Manual
i
INTRODUCTION > TABLE OF CONTENTS
Table of Contents
Introduction...........................................................................i
Preface ...................................................................................... i
About This Manual .......................................................................... i
Care Information .................................................................... vi
Cleaning the Unit ........................................................................... vi
Storing the GPSMAP 276C ........................................................... vi
Immersing the Unit in Water ......................................................... vi
Getting Started.....................................................................1
Unit Overview .......................................................................... 1
Charging the GPSMAP 276C .................................................. 2
Information about Charge Mode .................................................... 2
Turning On the GPSMAP 276C ............................................... 3
Adjusting the Backlight and Volume .............................................. 3
Getting Satellite Signals ......................................................... 4
Viewing GPS Status with the GPS page ......................................... 4
Receiver Status ............................................................................... 5
GPS Options ................................................................................... 6
GPS Tips ......................................................................................... 6
Learning about the Keypad .................................................... 7
Using the GPSMAP 276C ........................................................ 8
Understanding Features .................................................................. 8
Selecting Options and Entering Data.............................................. 9
Using the Databases...................................................................... 10
Simulated Basic Navigation ................................................. 11
Activating Simulator Mode .......................................................... 11
ii
Entering a New Location .............................................................. 11
Simulating Navigation .................................................................. 12
Basic Operation In Marine Mode ......................................14
Marine Mode Page Sequence ............................................... 14
Navigating in Marine Mode ................................................... 15
Initiating Navigation ..................................................................... 15
Man OverBoard (MOB) ............................................................... 17
Finding an Item ...................................................................... 18
Using the Find From Feature ........................................................ 18
Recently Found Items ................................................................... 19
Viewing the Information Page ...................................................... 20
Find Menu Options ....................................................................... 20
Creating and Using Routes .................................................. 21
Creating a Route ........................................................................... 21
Navigating a Saved Route ............................................................ 22
Editing a Route ............................................................................. 23
Using the Route Tab Options ........................................................ 25
Manually Transitioning to the Next Waypoint ............................. 25
Creating and Using Waypoints ............................................ 26
Marking Your Present Position ..................................................... 26
Creating Waypoints Using the Map .............................................. 27
Creating a Waypoint by Entering Coordinates ............................. 28
Reviewing a Waypoint .................................................................. 29
Adding a Waypoint to a Route...................................................... 30
Averaging the Waypoint’s Location ............................................. 30
Projecting a Waypoint................................................................... 31
Editing a Waypoint ....................................................................... 32
GPSMAP 276C Owner’s Manual
INTRODUCTION > TABLE OF CONTENTS
Organizing Waypoints into Categories ......................................... 33
Deleting Waypoints ...................................................................... 34
Proximity Points ........................................................................... 35
Managing Your Tracks .......................................................... 37
Setting up and Saving your Tracks ............................................... 37
Saved Tracks ................................................................................. 39
Navigating a Saved Track ............................................................. 40
TracBack Tips ............................................................................... 40
Following a Marine Route ..................................................... 41
See Your Route on the Map Page ................................................. 41
View Your Heading with the Compass Page ................................ 41
View Your Path on the Highway Page .......................................... 41
See Your Progress on the Active Route Page .............................. 42
Watch Your Trip Data on the Position Data Page ......................... 42
Marine Mode Pages and Features ...................................43
Map Page................................................................................ 43
Map Orientation ............................................................................ 43
Zooming In and Out of the Map ................................................... 44
Panning the Map ........................................................................... 45
Clearing Unwanted Details from the Map .................................... 46
Measuring Distance ...................................................................... 47
Compass Page....................................................................... 48
Turning On the Compass Page ..................................................... 48
Compass Page Options ................................................................. 48
Using the Marine Timer ................................................................ 49
Highway Page ........................................................................ 50
Using the Highway Page .............................................................. 50
GPSMAP 276C Owner’s Manual
Highway Page Options ................................................................. 51
Active Route Page ................................................................. 52
Active Route Page Options........................................................... 52
Position Data Page ................................................................ 53
Position Data Page Options .......................................................... 53
DSC ......................................................................................... 54
Understanding Distress Calls........................................................ 54
Understanding Position Reports ................................................... 54
Receiving DSC Calls .................................................................... 55
DSC Call List .......................................................................... 55
DSC Log ................................................................................. 56
Receiving a Position Report or Distress Call ............................... 56
DSC Directory ........................................................................ 56
Making a Distress Call ................................................................. 57
Setting up DSC ............................................................................. 57
Basic Operation In Automotive Mode ..............................58
Automotive Mode Page Sequence....................................... 58
Navigating in Automotive Mode ........................................... 59
Initiating Navigation ..................................................................... 59
Following a Saved Route .............................................................. 61
Stopping and Resuming Navigation ............................................. 61
Editing Your Route ................................................................ 62
Entering Custom Avoids ............................................................... 62
Creating a Detour.......................................................................... 63
Adding and Editing Stops (Via Points)......................................... 63
Following an Automotive Route........................................... 64
Track your Progress with the Map Page ....................................... 64
iii
INTRODUCTION > TABLE OF CONTENTS
Watch your Trip Data.................................................................... 64
See your Next Turn with the Current Route Page ........................ 64
Automotive Mode Pages and Features ...........................65
Map Page................................................................................ 65
Current Route Page............................................................... 66
Saving the Current Route ............................................................. 66
Trip Computer Page .............................................................. 67
Trip Computer Page Options Menu .............................................. 67
Additional Pages and Features ........................................68
Setting Alarms ....................................................................... 68
Navigation (Nav) Alarms ............................................................. 68
System Alarms .............................................................................. 69
Sonar Alarms ................................................................................ 69
Using the Calendar................................................................ 70
Day View ...................................................................................... 70
Week View .................................................................................... 70
Month View .................................................................................. 70
Calendar Options .......................................................................... 70
Viewing Celestial Information .............................................. 71
Tide Tab ........................................................................................ 71
Sun & Moon Tab .......................................................................... 73
Hunt & Fish Tab ........................................................................... 74
Viewing Messages ................................................................. 75
Viewing the Temperature ...................................................... 76
Changing the Temperature Display .............................................. 76
Reset the Temperature Graph ....................................................... 76
iv
Customizing Your GPSMAP 276C ....................................77
Setting up the System........................................................... 77
Adding a Welcome Message......................................................... 77
Changing the Page Layout and Data Fields.................................. 78
Setting up the Map Page ............................................................... 78
Additional Map Data Displayed ................................................... 79
Changing the Display ................................................................... 80
Changing the Sounds .................................................................... 81
Changing the System Settings ...................................................... 82
Setting the Timers ......................................................................... 83
Changing the Time........................................................................ 83
Customizing the Units .................................................................. 84
Restoring Defaults ........................................................................ 84
Customizing the Routing and Guidance Settings .............. 85
Road Routing Settings .................................................................. 85
Guidance Settings ......................................................................... 86
Changing the Location Settings .......................................... 87
Changing the Location Format ..................................................... 87
Selecting a Different Map Datum ................................................. 87
Selecting a Different Heading Reference ..................................... 87
Changing the Data Format ................................................... 88
Advanced NMEA Output Setup ................................................... 90
Setting up and Using Sonar .............................................91
Showing Sonar on the Map Page......................................... 91
Using the Sonar Page ........................................................... 92
Adjusting the Sonar Page ............................................................. 93
GPSMAP 276C Owner’s Manual
INTRODUCTION > TABLE OF CONTENTS
Adjustment Options ................................................................ 93
Resizing the Split Screen .............................................................. 95
Using the Pointer on the Sonar Page ............................................ 95
Setting up the Sonar ............................................................. 96
Calibrating the Water Speed ......................................................... 97
Setting up the Sonar Display ........................................................ 98
Understanding Sonar ............................................................ 99
Understanding the Sonar Display ................................................. 99
Transducer Coverage .................................................................. 100
Whiteline .................................................................................... 101
Thermoclines .............................................................................. 101
Appendix ..........................................................................102
Specifications ...................................................................... 102
Physical Specifications ............................................................... 102
Power .......................................................................................... 102
Performance ................................................................................ 102
Accuracy ............................................................................... 102
Optional Accessories .......................................................... 103
Installation Information....................................................... 104
Connecting the Power/Data Cable .............................................. 104
Connecting Your GPSMAP 276C to a Computer ....................... 105
Information about USB Drivers ............................................ 105
Using xImage for Customized Waypoint Icons .......................... 106
Installing and Removing Data Cards .......................................... 106
Interfacing ................................................................................... 107
Removing the Antenna ............................................................... 107
GPSMAP 276C Owner’s Manual
Learning about GPS ............................................................ 108
Common GPS Terms .................................................................. 108
What is Differential GPS (DGPS)? ............................................ 108
Differential Field ........................................................................ 108
What is WAAS? .......................................................................... 109
LORAN TD Setup ................................................................. 110
LORAN TD Feature ................................................................... 110
Using the LORAN TD Format ................................................... 110
Map Datums and Location Formats .................................. 112
What are a Map Datum and which should I use? ....................... 112
What is a Location Format and which should I use? .................. 112
Digital Selective Calling (DSC) ........................................... 113
What is a Maritime Mobile Service Identity (MMSI) number? . 113
How are MMSI assignments obtained? ...................................... 114
Non-Federal Users in the United States ............................... 114
Federal Users in the United States ....................................... 114
Users Outside the United States ............................................ 114
Users In Canada .................................................................... 114
How can Garmin help you with DSC? ....................................... 114
Messages ............................................................................. 115
Data Field Options............................................................... 116
Safety and Product Information ......................................... 118
Index .................................................................................123
v
INTRODUCTION > CARE INFORMATION
Care Information
To resolve problems that cannot be remedied using this guide,
contact Garmin Product Support in the U.S.A. at 800/800.1020 or
Garmin Europe at 44/0870.8501241.
Cleaning the Unit
Immersing the Unit in Water
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, wipe and air dry the unit before reuse or charging.
The GPSMAP 276C is constructed of high quality materials and
does not require user maintenance other than cleaning. Clean the
unit using a cloth dampened with a mild detergent solution. Avoid
chemical cleaners and solvents that may damage plastic components.
Wipe the unit dry with a dry cloth.
Storing the GPSMAP 276C
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, is 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).
vi
GPSMAP 276C Owner’s Manual
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.
Antenna
256-Color TFT display
with backlighting
Backlit keypad for easy nighttime operation
GPSMAP 276C Owner’s Manual
Detachable antenna
collapses for storage.
Be sure the antenna
is up (as shown here)
to receive satellite
signals. Refer to
the Appendix,
page 107, for
instructions on
removing the
antenna.
Battery pack. Press tab down to
remove battery pack for replacement,
if necessary. See the “Safety
Information” on page 120 for more
information about the lithium-ion
battery pack.
External power
Serial number
connector under USB connector
weather cap under weather cap Slot for optional data card
1
GETTING STARTED > CHARGING THE GPSMAP 276C
Charging the GPSMAP 276C
Before using the unit, you may need to charge the battery in the
GPSMAP 276C. Simply plug the unit into an external power source
to charge. You can use the unit while it is charging.
To charge the unit’s battery:
1. Lift the rubber weather cap to expose the power connector
on the back of the unit. Refer to 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.
The unit begins charging as soon as external power is applied.
Placing the unit in Charge Mode, as discussed below, charges the
unit more quickly than when the unit is turned on and reduces draw
on the vessel/vehicle battery.
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
is in use.
2
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 red POWER key.
Instead of completely turning off, the unit now goes into Charge
Mode, as shown below.
Charge Mode
NOTE: While in Charge Mode, the unit draws a small amount of
current from the vessel/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.
After using the unit a lot, you may notice that the lithium-ion 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.
GPSMAP 276C Owner’s Manual
GETTING STARTED > TURNING ON THE GPSMAP 276C
Turning On the GPSMAP 276C
The first time you turn on your new GPSMAP 276C, the receiver
must collect satellite data and establish its present position. 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.
To turn on and off the GPSMAP 276C:
1. Press and hold the red POWER key. When the unit powers
on, a tone sounds and the Warning page displays.
3. To turn off the GPSMAP 276C, press and hold the red
POWER key again.
Adjusting the Backlight and Volume
You may want to 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 may want to adjust the volume
level of the speaker.
To adjust the backlight level or volume:
1. Press and quickly release the POWER key.
2. Press the Rocker key Up to increase the brightness or Down
to decrease. Press Right to raise the volume or left to lower.
3. Press ENTER or QUIT to close the Backlight/Volume
adjustment window. Press MENU to view the options menu.
Battery Time Remaining and Power Source Indicator
Warning Page
2. Read and be sure you understand the warning. If you have
external devices connected, they are listed here. Press
ENTER to continue.
GPSMAP 276C Owner’s Manual
Backlight
Adjustment Slider
Volume
Adjustment Slider
3
GETTING STARTED > GETTING SATELLITE SIGNALS
Getting Satellite Signals
Viewing GPS Status with the GPS page
It may take a few minutes to acquire satellites and display your
current location on the map. Be patient as the unit acquires satellite
data. To get signals more quickly, be sure the antenna is raised to the
up position shown in the image on page 1.
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 displayed below each bar
represent the particular satellite that is being received. Numbers
above 33 indicate WAAS satellites.
After you turn on the GPSMAP 276C, the unit automatically begins
searching for satellites. The GPS page is displayed 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 displays the status as “Acquiring Satellites.”
The GPS page 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.
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 Page
NOTE: While acquiring satellites, the Map page may display the
wrong location, such as China. This does not mean your unit has
the wrong data loaded; it simply means you need to wait a few
more minutes to acquire satellites and find your current location.
4
A power source indicator shows the unit is operating off battery
power (
), that the unit is charging (
), or that an
external power source is in use (
).
GPSMAP 276C Owner’s Manual
GETTING STARTED > GETTING SATELLITE SIGNALS
Receiver
Status
Field
Signal
Strength
Bars
Sky view
Power
Source
Indicator
GPS Page
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.
As soon as the GPSMAP 276C has collected 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 position, date
and time.
Receiver Status
The Receiver Status field displays one of the following conditions:
GPSMAP 276C Owner’s Manual
• Searching the Sky—the receiver is looking for satellites.
• AutoLocate—the receiver is looking for any satellite whose
almanac has been collected, which can take up to 5 minutes.
• Acquiring Satellites—the receiver is looking for and
collecting data from satellites visible at its last known or
initialized position, but has not acquired a fix.
• 2D GPS Location: At least three satellites have been acquired
and a two-dimensional position fix has been 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 have been
acquired and a three-dimensional fix has been 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.
5
GETTING STARTED > GETTING SATELLITE SIGNALS
GPS Options
Press MENU two times to open the Main Menu. Use the Rocker
key to highlight GPS. Press MENU to open the options menu.
GPS Tips
While the receiver is gathering information, your location on
the map may display as different from where you actually are
located. Be patient; as soon as the receiver gathers enough satellite
information, your proper location is displayed 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.
GPS Page Options Menu
Start/Stop Simulator—activates and deactivates simulator mode,
which is particularly helpful when learning how to use your unit.
The GPS receiver can lose satellite signals due to interference from
such items as buildings, tunnels, and heavy tree cover. Monitoring
the GPS status is recommended.
To learn about GPS, refer to “Learning about GPS” on page 108.
WAAS On—enables WAAS capability. Refer to page 109 of the
“Appendix” for more information about WAAS.
Track/North Up—orients the sky view display on the GPS page 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.
6
GPSMAP 276C Owner’s Manual
GETTING STARTED > LEARNING ABOUT THE KEYPAD
Learning about the Keypad
Press the IN key to adjust the map scale to show a smaller
area with more detail (zoom in).
Press the OUT key to adjust the map scale to show a larger
area with less detail (zoom out).
Press the PAGE key to cycle through the main pages
in sequence and exit a submenu page. Press and hold to
switch between Marine and Automotive Modes.
Press QUIT to cycle the unit through the main pages in
reverse sequence, revert to the previous value in a data
entry field, or cancel an unintended function.
Press ENTER to select a highlighted option. When
entering data, it allows you to initiate entry and to accept
the selected value. Press and hold for more than one
second to mark your current location as a waypoint.
Press the NAV/MOB (Navigate/Man OverBoard) key
to display the Navigation Menu. While in Marine Mode,
press and hold for more than one second to activate the
Man Overboard (MOB) function.
While in Automotive Mode, press and hold to display the
Next Turn page and announce the next turn when using the
external speaker.
Press the FIND key to quickly search for and access user
waypoints, cities, points of interest, services and other
items used for navigation.
Press and hold the POWER key for more than one second
to turn the unit on and off. Briefly press and release to
adjust the backlighting and external speaker volume.
Use the Rocker key to highlight options and to enter
data. Also use to pan the arrow on the Map page.
Press MENU to display a menu of available options for
the current page. Press MENU twice to display the Main
Menu.
GPSMAP 276C Owner’s Manual
7
GETTING STARTED > USING THE GPSMAP 276C
Using the GPSMAP 276C
This section explains how to enter and select information with the
GPSMAP 276C.
Understanding Features
The GPSMAP 276C 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 will be directed
to press a specific key or highlight a field on the screen. When you
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 activate
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 key.
On-Screen Button—similar to “field.” Use the Rocker key to
highlight a button and press ENTER to select the button.
Scroll Bar—when viewing a list of items too long to display on
the screen, a scroll bar appears along the right side of the list.
The position of the scroll bar indicates which portion of the list is
currently displayed. To scroll through a list, press Up or Down on
the Rocker key.
Default—the factory setting saved in the unit’s memory. You can
change the settings as you like, but you can also revert to the factory
(default) settings when you select Restore Defaults.
Field
The following terms are used throughout this manual:
Highlight—move the highlighted area on the screen Up, Down,
Left, or Right with the Rocker key 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 may be
entered and displayed. Select (highlight) a field using the Rocker
key to begin entering data or selecting options.
8
Highlighted Field
On-screen buttons
GPSMAP 276C Owner’s Manual
GETTING STARTED > USING THE GPSMAP 276C
Selecting Options and Entering Data
To enter data and select options, use the Rocker key to highlight,
select, or choose an item in a list or a field on the screen. Use the
ENTER key and the Rocker key to select options, enter names and
numbers in data fields, and activate your selections.
To select and activate an option:
1. With any page displayed, press MENU. An options menu
appears with a list of optional features for that page.
2. Use the Rocker key to move the highlight Up, Down, Right,
or Left on the menu to your desired selection.
3. Press ENTER to activate the feature. Another window may
then appear with more options. If so, select the desired
option and press ENTER again.
To exit a menu or return to the previous setting:
Press QUIT. The QUIT key moves backwards through your
steps. Press QUIT repeatedly to return to the starting page.
To select and activate an on-screen button:
1. On a page with on-screen buttons, use the Rocker key to
highlight the desired on-screen button.
2. Press ENTER.
On-Screen Button
To practice entering data, try marking a waypoint and customizing
one of the waypoint properties, such as the waypoint name.
To mark your current location as a waypoint, press and hold
ENTER/MARK until the New Waypoint page appears.
Selecting an option from an options menu
GPSMAP 276C Owner’s Manual
9
GETTING STARTED > USING THE GPSMAP 276C
To enter data in a data field:
1. Use the Rocker key to highlight the desired data field and
press ENTER to activate the field.
2. Press Up or Down on the Rocker key to select characters.
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 to drop to the next line.
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.
Refer to the Garmin Web site at http://www.garmin.com/
cartography/ for compatible MapSource products.
Entering data
TIP: To clear the entire data field, highlight the left-most
character field and press Left once more on the Rocker key.
3. After entering the desired data, press ENTER.
Not all fields are programmable. When you are on a page with fields
that are not selectable, the highlight skips over them.
10
GPSMAP 276C Owner’s Manual
GETTING STARTED > SIMULATED BASIC NAVIGATION
Simulated Basic Navigation
To help you get to know your GPSMAP 276C, you can use the unit
in Simulator Mode. Simulator Mode is also 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. The following section describes how to use
simulator mode and walks you through some basic navigation using
the simulator.
Activating Simulator Mode
You can activate Simulator Mode from the Setup tab or the GPS tab
of the Main Menu.
NOTE: 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 displayed are only simulations
and do not represent the strength of actual satellite signals.
To put the unit into Simulator Mode using the GPS tab:
1. Press MENU twice to display the Main Menu.
2. Highlight GPS from the vertical menu.
3. Press MENU to open the GPS tab options menu.
4. Highlight Start Simulator and press ENTER.
Entering a New Location
From the GPS options menu you can also enter a New Location to
simulate from.
To enter a New Location using the map:
1. Press MENU twice and highlight GPS from the vertical menu.
2. Press MENU to open the options menu.
Setup tab of Main Menu
GPSMAP 276C Owner’s Manual
System tab
3. Highlight New Location and press ENTER.
4. Highlight Use Map and press ENTER.
5. Use the Rocker key to move the panning arrow to the
desired location on the map and press ENTER.
11
GETTING STARTED > SIMULATED BASIC NAVIGATION
Simulating Navigation
The main purpose of using a GPS receiver is for navigating to a
known position. To get a feel for navigating with the GPSMAP
276C, it is a good idea to practice navigation in Simulator Mode. For
this simulation we have set our location to the San Diego coast.
To find a marine destination:
1. Be sure the GPSMAP 276C is set to Simulator Mode (see
“Activating Simulator Mode” on the previous page).
2. Press the FIND key.
3. Highlight Tide Stations and press ENTER.
4. Use the Rocker key to select a nearby Tide Station and
press ENTER. For our example, we selected Point Loma.
5. With Go To highlighted on the Tide Station Information Page,
press ENTER.
To simulate navigation to the marine destination:
1. Follow the previous steps to find a destination. The GPSMAP
276C switches to the Map page. A magenta line shows the
direct route from your current location to your destination. If
desired, press IN or OUT to adjust the zoom level.
2. Press the PAGE key twice to display the Compass page.
12
3. Press Up on the Rocker key to increase the speed to 40 kt.
(which is the desired speed setting). Press the Rocker key
Right or Left to simulate steering.
4. Press QUIT to return to the Map Page. Press IN to adjust the
zoom level. Observe the movement of the position marker
(triangle) as the unit simulates navigation.
5. If desired, press PAGE or QUIT to view the simulated
navigation on the other main pages.
Simulated navigation displayed on the Map Page (Marine Mode)
GPSMAP 276C Owner’s Manual
GETTING STARTED > SIMULATED BASIC NAVIGATION
Now we will simulate navigation in the Automotive Mode. To
switch between Marine and Automotive Mode, press and hold the
PAGE key. Use the Rocker key to select Automotive and press
ENTER.
To find a land destination:
1. Be sure the GPSMAP 276C is set to Simulator Mode (see
“Activating Simulator Mode”).
2. Press the FIND key.
3. Highlight Cities and press ENTER.
4. Use the Rocker key to select a nearby city and press
ENTER. For our example, we selected National City, CA.
5. With Go To highlighted, press ENTER.
To simulate navigation to the Automotive destination:
1. Follow the previous steps to find a destination city. The
GPSMAP 276C switches to the Map page. A magenta line
shows the turn-by-turn route from your current location to
your destination.
2. The GPSMAP 276C automatically adjusts your speed to
“move” you along your route. Observe the movement of the
position marker (triangle) as the unit simulates navigation. If
desired, press IN or OUT to zoom.
3. If desired, press PAGE or QUIT to view the simulated
navigation on the other main pages.
Simulated Current Route Page (Automotive Mode)
Simulated navigation displayed on the Map Page (Automotive Mode)
When you are ready to navigate on your own, turn the Simulator off.
TIP: You can activate and deactivate the Simulator through the
Setup tab or GPS tab options menu of the Main Menu.
GPSMAP 276C Owner’s Manual
13
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.
To switch usage modes:
1. Press and hold the PAGE button.
2. Use the Rocker key 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/or select features. To view the options menu, press the MENU key.
Marine Mode features five main pages: the Map, Compass, Highway, Active Route, and Position Data pages. The following examples show
the main pages in Marine Mode with optional MapSource BlueChart detailed maps. The Marine Mode is the default mode for the GPSMAP
276C. This manual first addresses the page, such as the Map Page, as displayed in the Marine Mode. The manual then describes the page as
shown in Automotive Mode.
Map Page
14
Compass Page
Highway Page
Active Route Page
Position Data Page
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > NAVIGATING 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 the NAV key.
• Press the NAV key 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 very similar. Most of the
features discussed here also apply to Automotive Mode.
Once you are actively navigating, you will 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
Menu.
GPSMAP 276C Owner’s Manual
Navigate Menu in Marine Mode
Accessed by pressing NAV/MOB key
Press the NAV key to open the Navigate Menu:
Go To Point—allows you to select a waypoint or point of interest
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 of the Main Menu.
For information about routes, refer to page 21.
Navigate Track (TracBack)—allows you to select a saved track to
navigate. You can also activate a saved track through the Track tab
of the Main Menu. For information about tracks, refer to page 37.
MOB (Man OverBoard)—creates a Man OverBoard waypoint and
navigates to that location.
15
BASIC OPERATION IN MARINE MODE > NAVIGATING IN MARINE MODE
To go to a highlighted map item:
1. Use the Rocker key to highlight the item you would like to
navigate to on the Map page.
2. Press NAV. Go To <point name> appears in the list of
options and is 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.
To activate new route using the Find Menu:
1. Press the NAV key to open the Navigate Menu.
2. Highlight New Route (or Go To Point when in Marine Mode)
and press ENTER to open the Find Menu.
3. From the Find Menu, highlight Waypoints and press ENTER.
(You may 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 then press ENTER to display
the Waypoint page.
Navigate Menu
with Map Feature highlighted
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.
16
Waypoint Review Page
Activating a Go To using the Find Menu
5. The Waypoint page automatically opens. With the Go To
button highlighted, press ENTER to begin navigation.
GPSMAP 276C Owner’s Manual
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 key, highlight the desired category, such
as Cities, and press ENTER.
3. Press ENTER and use the Rocker key 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.
Man OverBoard (MOB)
The Man OverBoard function (MOB) lets you simultaneously mark
your present position and create a direct route back to that position
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
position.
Once an MOB has been activated, an 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 may be deleted like any other waypoint.
Finding an item using the Containing field: The unit searches for items
containing the letter combination you enter and displays them in the list.
3. Highlight the desired item from the list and press ENTER.
4. Press ENTER when the Go To button is highlighted.
For complete information about finding an item, refer to the
“Finding an Item” section.
GPSMAP 276C Owner’s Manual
17
BASIC OPERATION IN MARINE MODE > FINDING AN ITEM
Finding an Item
The Find Menu allows you 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 are displayed depending on the optional
BlueChart or MapSource data card in the unit.
Using the Find From Feature
The Find option also supports a “find from” feature that allows you
to center your search around an item that 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
will see “From Anchoring Prohibited” as the new search from point.
You may 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 location on the map:
Open the Map page. Use the Rocker key to pan the arrow
(pointer) to the desired location and press FIND.
2. The Find Menu opens, displaying “From Map Pointer.” The
list of items is sorted to display items nearest the selected
location. Using the Rocker key, highlight the desired
category from the list and press ENTER.
3. Using the Rocker key, highlight the desired 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.
1
Find Menu
Shown without additional BlueChart or MapSource maps installed
Follow the directions on page 17 to search for an item near your
current location and then route to it.
18
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > FINDING AN ITEM
To find an item from another location:
1. From any page, press the FIND key.
2. Using the Rocker key, highlight the desired category from
the list and press ENTER.
3. Press the MENU key to open the options menu.
To find an item near another item:
1. Press the FIND key.
2. From the Find Menu, highlight the item you want to Find
From. For this example, we chose Coronado, CA.
3. Press the FIND key with the item highlighted. The Find Menu
opens again with items near the previously-selected item,
Coronado, CA in this example. Search for the desired item.
Recently Found Items
The Recently Found page displays a list of the items you have
searched for or gone to recently.
To view recently found items:
Find From Options Menu
4. Highlight Near Other and press ENTER. If you are actively
following a route, you may also choose one of the other
options listed in the Find From list, as shown below.
5. Select a reference position on the map and press ENTER.
The list displays items nearest to the new map position.
1. Press the FIND key. The Find Menu opens.
2. Use the Rocker key to highlight Recently Found. Press
ENTER. The Recently Found page opens.
Press MENU to display the options menu:
Show Find History—allows you to toggle between displaying 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.
GPSMAP 276C Owner’s Manual
19
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 details about an item:
1. Highlight the desired point on the map or in the search
results list and press ENTER.
An Information page appears with details about the item in
a tabbed format. 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.
Find Menu Options
To view additional options for the Find Menu, press the FIND key
and then press MENU. The following options are displayed:
Enable Auto Arrange—automatically arranges the Find Menu.
Disable Auto Arrange and Restore Default options appear when
you select Enable Auto Arrange.
Near Other—allows you to select a new location from which to
compile the Find items lists. Using the Rocker key, move the map
arrow to the desired location and press ENTER.
Map Information—shows information about the detailed map data
stored on the data card and allows you to select which maps are
displayed on the Map page.
Additional selections are included in the options menu when you are
navigating:
Near Next—compiles the Find items lists based upon the next turn
in the route.
Map Feature Information Page
Select Save to save feature as a waypoint
2. Press PAGE or QUIT to exit the information page. You can
also highlight one of the on-screen buttons and press ENTER
to perform that operation.
20
Near Destination—compiles the Find items lists based upon the
route destination.
Near Current Route—compiles the Find items lists based upon the
active route.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
Creating and Using Routes
The GPSMAP 276C lets you create and store up to 50 reversible
routes, with up to 300 points each.
Creating a Route
Use the Route tab of the Main Menu to create routes. Routes can
be created in 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 on-screen as you create the route.
To create a route using the Find Menu:
1. Press MENU twice to display the Main Menu.
2. Use the Rocker key to highlight the Route tab.
3. Press MENU to display the Route options menu. Select New
Route and press ENTER. Or, highlight the first available
blank route slot and press ENTER.
4. The Route Review page automatically opens, displaying a
blank route. Press ENTER to find items to add to the route.
5. The Find Menu opens. Using the methods discussed in the
“Finding an Item” section beginning on page 18, 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.
Route Tab Displaying the Route List
Creating a new route on Route Review page
GPSMAP 276C Owner’s Manual
21
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
To create a route graphically:
1. Press MENU twice to display the Main Menu. Use the
Rocker key 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 key to highlight Edit on Map and
press ENTER.
4. Use the Rocker key to highlight the location you want to add
and press ENTER.
If you have 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.
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.
Navigating a Saved Route
The Navigate Route option allows you to easily select and activate a
saved route.
To navigate a saved route:
1. In Automotive Mode, press the NAV key.
2. Use the Rocker key to highlight Navigate Route and press
ENTER.
3. Highlight the desired route and press ENTER.
Select desired
route from list
Select the route you want to take
Creating a new route on the map
22
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
Editing a Route
Once you have created a route, the Route Review page allows you 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. Use the Rocker key to highlight the name of the desired
route and press ENTER.
3. With the Route Review page displayed, use the Rocker key
to highlight the route name field at the top of the page 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 key to highlight
the name of the desired route and press ENTER.
3. From the Route Review page, highlight the desired 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 may edit
any of the waypoint properties on the Waypoint page (see
the “Creating and Using Waypoints” section beginning on
page 26 for details).
Once you are back on the Route Review page, the next point in the
route is automatically highlighted. This allows you to review each
point on the route by pressing ENTER repeatedly.
Enter a new
Route name
here
Route Review Page
4. Use the Rocker key to enter the desired route name. Then
press ENTER.
GPSMAP 276C Owner’s Manual
23
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
key to select the Route tab.
2. Use the Rocker key to select the desired route and press
ENTER.
3. Use the Rocker key 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.) 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.
Route Review Page
5. In the point review page, highlight OK and press ENTER to
add the new point to the route.
24
To edit the route on the map:
1. Press MENU twice to open the Main Menu. Use the Rocker
key to select the Route tab from the vertical menu of tabs.
2. Select the desired 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 key to select a location on the route (the
route turns white when the arrow is over the route). Press
ENTER.
5. Use the Rocker key 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
desired, highlight OK, and press ENTER.
7. Repeat steps 4 through 6 until all desired points are added to
the route. Press Quit when finished.
GPSMAP 276C Owner’s Manual
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, such as ETA and ETE.
To plan your route:
1. Open the Route Review page options menu.
2. Highlight Plan Route and press ENTER.
Using the Route Tab Options
The Route tab in the Main Menu displays 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
Entering Speed and Fuel Flow for trip planning
3. Enter the desired 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 upon information for your vehicle (such as the
operator’s manual or performance specifications) and make note
of the desired units of measure (gallons or liters).
GPSMAP 276C Owner’s Manual
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 will lead you to the next point
on your route.
When you select Manual, you can transition to the next waypoint
when you want 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.
25
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 may later want to return to, 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 home.
Marking Your Present Position
The ENTER/MARK key lets you quickly capture your present
position to create a new waypoint. You must have a valid position
(2D or 3D) fix to mark your present position. You can determine the
satellite fix by looking at the GPS tab on the Main Menu.
To mark your present position:
1. Press and hold the ENTER/MARK key until the New
Waypoint page appears, then release it. A default four-digit
name and symbol are assigned for the new waypoint.
The GPSMAP 276C stores up to 3000 alphanumeric waypoints
with a user-defined icon, comment, altitude, depth, and temperature
available for each waypoint. Waypoints can be created using three
basic methods:
• ENTER/MARK—allows you to quickly mark your present
position.
• Graphically—allows you to define a new waypoint position
from the map display using the Rocker key.
• Text Entry—allows you to enter a new waypoint’s position
coordinates manually.
26
New Waypoint Page
2. To accept the waypoint with the default information, use the
Rocker key 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.
GPSMAP 276C Owner’s Manual
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 will 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 is displayed.
2. Use the Rocker key to move the arrow to the desired map
position or map feature.
3. Press and quickly release ENTER/MARK to capture the
arrow position. Pressing and holding ENTER/MARK marks
your present position, not the arrow’s location.
If you have highlighted a map feature, an information page
appears after you press ENTER. Use the Rocker key to
highlight Save and press ENTER to save the item as a
waypoint.
GPSMAP 276C Owner’s Manual
Map Feature Information Page
Select Save to save feature as a waypoint
4. The New Map Waypoint page appears. 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.
27
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 can be 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 location
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 position as the default position.
2. On the New Waypoint page, use the Rocker key to highlight
the Location field and press ENTER. Use the Rocker key
to enter the desired position coordinates and press ENTER
when finished.
28
To change the location of a waypoint, highlight the character you want to
change in the Location field. Press Up or Down on the Rocker key to change
the character. Repeat until the new location is entered.
To change any of the other information on the New Waypoint
page, highlight the appropriate field and press ENTER. After
entering your changes, highlight OK and press ENTER.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Reviewing a Waypoint
Once you have created and stored a waypoint, you can modify,
review, rename, move, or delete it at any time through the Waypoint
Review and Waypoint Edit Pages. These pages provide virtually
the same information. For practical purposes, we will refer to these
pages as the “Waypoint pages,” unless it is necessary to discuss
them individually.
To access the Waypoint Edit page:
1. Press MENU twice to view the Main Menu.
2. Use the Rocker key to highlight Points from the vertical list
of tabs, then highlight the desired waypoint from the list.
To access the Waypoint Review page:
1. Use the Rocker key to highlight the desired waypoint on the
Map page.
2. Press ENTER to display the Waypoint Review page. If the
waypoint is located on a map feature or MapSource or
BlueChart feature, the Waypoint Review page may include
additional tabs containing information about the other
features at that location.
Points Tab in the Main Menu
3. Press ENTER to display the Waypoint Edit page.
If the waypoint is located on a map feature or MapSource or
BlueChart feature, the Waypoint Edit page will NOT display
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.
Waypoint Review Page
GPSMAP 276C Owner’s Manual
29
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 is displayed when you are not navigating. When you
are navigating to a destination, Add to Current Route is displayed.
The selected waypoint is added to the current route before the route
destination.
To add a waypoint to the end of the route:
1. Open the Waypoint 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 the desired route or select New Route and press
ENTER.
4. With OK highlighted, press ENTER to save the waypoint.
30
Averaging the Waypoint’s Location
Average Location makes the unit take several sample location
measurements for the waypoint and recalculate for a more accurate
position reading.
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.
Average Location Page
3. The Average Location window appears. Watch the fields
change as the unit calculates the average position of the
waypoint. Press ENTER to save the position.
NOTE: You must have a GPS satellite fix before you can average
a waypoint’s location.
GPSMAP 276C Owner’s Manual
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 new waypoint by projecting its location:
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
position as the default position.
2. Press MENU twice to open the Main Menu.
3. Highlight Points from the vertical list of tabs using the
Rocker key.
4. Press MENU to open the New Waypoint page options menu.
5. Highlight Project Location and press ENTER.
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 that you will project your new waypoint from
just as you would select a waypoint or point of interest. For
more information see the “Finding an Item” section.
7. To adjust the distance that the new waypoint will be 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 will be projected
from the original waypoint, highlight the Bearing field and
press ENTER. Enter the bearing and press ENTER.
8. When you have adjusted all elements of the projected
location, highlight Save and press ENTER.
9. Make any other desired changes to the new waypoint data
(such as the name or symbol), then highlight OK and press
ENTER.
Project Location Menu
Enter the desired distance, bearing, and location to project from.
GPSMAP 276C Owner’s Manual
31
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Editing a Waypoint
The User Points tab displays a master list of all waypoints currently
stored in memory. From the User list, you may review, edit, rename,
or delete individual waypoints or delete all user waypoints.
To edit the 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.
Symbol field
User Points Tab
The total number of stored and available waypoints is displayed
at the bottom of the User Points tab, with the stored waypoints
arranged in numerical/alphabetical order.
To activate a Go To from the User Points tab:
1. Press MENU twice to open the Main Menu.
2. Select Points from the Main Menu, then highlight User.
3. Highlight the desired waypoint in the list.
4. Press NAV to open the Navigate Menu. Highlight Go To
<Point Name> and press ENTER.
32
Name field
Waypoint Page
3. Use the Rocker key to select the desired symbol or enter
data and press ENTER when done.
To edit the next waypoint in the list:
1. After you have edited the waypoint on the Waypoint Edit
page (shown above), highlight Next and press ENTER.
2. The Waypoint list is displayed with the next waypoint
highlighted. Press ENTER to edit that waypoint.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Organizing Waypoints into Categories
You can organize your waypoints into categories, which can help
when managing and using 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
simply delete all the waypoints in that category by pushing a few
buttons. You can create up to 15 categories.
Now, 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 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
To 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.
3. Use the Rocker key to highlight Add and press ENTER.
Waypoint Page
3. From the list, select the category you want to assign the
waypoint to and press ENTER.
Enter the name of the category, select Save, and press ENTER
4. Use the Rocker key to enter a name for the category.
5. Highlight Save and press ENTER.
GPSMAP 276C Owner’s Manual
33
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
To delete a category:
1. With the Waypoint Categories window open, highlight the
category to delete. Press MENU.
To delete a waypoint from the User Points tab:
1. From the User Points tab, use the Rocker key to highlight
the waypoint you want to delete.
2. Press MENU, highlight Delete Waypoint, and press ENTER.
Waypoint Categories Options Menu
2. Select Delete Category and press ENTER.
3. Press ENTER again to finish deleting the category.
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 key to highlight the on-screen Delete button
and press ENTER.
NOTE: Once a waypoint is deleted 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.
34
You can delete waypoints using a variety of methods. Press MENU to open
the User Points options menu.
3. Press ENTER to confirm.
To delete waypoints by symbol or category:
1. From the User Points tab, highlight the waypoint you want to
delete and press MENU.
2. Highlight Delete by Symbol or Delete by Category and
press ENTER.
GPSMAP 276C Owner’s Manual
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.
Proximity Points
Use the Proximity Points tab to define an alarm circle around a
stored waypoint position. The alarm circle can help you avoid reefs,
rocks, or restricted waters. Up to ten waypoints may be listed with
a maximum alarm radius of 99.99 nautical miles, statute miles, or
kilometers.
To delete waypoints by distance:
1. From the User Points tab, highlight the waypoint to be
deleted and press MENU.
2. Highlight Delete By Distance and press ENTER.
3. Select Less Than or More Than and enter the desired
distance using the Rocker key.
4. If desired, 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 the desired 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.
GPSMAP 276C Owner’s Manual
Proximity Points Tab
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.
35
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 Points from the vertical list of tabs. Highlight
Proximity from the row of tabs along the top of the screen.
3. Use the Rocker key to highlight the field below Proximity
Alarm and press ENTER.
4. Select the desired On or Off setting and press ENTER.
To clear one or all proximity waypoints from the list:
1. Press MENU twice to open the Main Menu.
2. Highlight Points from the vertical list of tabs. Highlight
Proximity from the row of tabs along the top of the screen.
3. Use the Rocker key to highlight the proximity waypoint to
clear and press MENU.
To add a proximity waypoint:
1. From the Proximity Points tab, use the Rocker key to
highlight an empty line on the Proximity List and press
ENTER. The Find Menu appears.
2. Select the desired 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 18).
3. The distance field is now highlighted. Press ENTER to begin
entering the proximity radius.
4. Use the Rocker key to enter a distance value (up to 99.99
units) and press ENTER.
36
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 key to highlight OK and press ENTER to
confirm.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
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 position for each point.
Setting up and Saving your Tracks
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.
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 displays
zero percent. When the display 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.
To access the Track tab:
1. Press Menu twice to open the Main Menu.
2. Highlight Track from the vertical list of tabs.
GPSMAP 276C Owner’s Manual
Active Track Tab
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 upon the
resolution. The higher the resolution entered, the more points the
unit creates to 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 is displayed on the map.
37
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
To clear the track log:
1. Press MENU twice to display the Main Menu.
2. Highlight Track, then highlight the Active tab to the right.
3. Select the Clear button 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, then highlight the Active tab.
3. Use the Rocker key to select Save and press ENTER.
4. To save only a portion of the track, highlight No and press
ENTER when the pop-up window appears.
5. Select a beginning point and press ENTER. Select an ending
point and press ENTER.
Clearing the track log
4. Highlight OK and press ENTER. Press QUIT to exit.
To save the entire track log:
1. Press MENU twice to open the Main Menu.
2. Highlight Track, then highlight the Active tab to the right.
3. Use the Rocker key to select Save and press ENTER.
4. A window pops up asking if you want to save the entire track
log. To save the entire track, highlight Yes and press ENTER.
38
Saving a portion of the track log
6. The Track Review page automatically opens. Highlight OK
and press ENTER to save the track. Press QUIT to exit.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
Saved Tracks
The Saved tab lists all of the saved tracks in your unit.
Saved Tab
Press MENU to open the Saved tab options menu:
Review on Map—displays 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 the Rocker key right to
highlight the Saved tab.
GPSMAP 276C Owner’s Manual
3. Highlight the track you want to edit and press ENTER. The
Track Review page opens. Make changes as desired.
Track Review Page
4. Highlight the Name field and press ENTER. Use the Rocker
key to change the name and press ENTER.
5. Select a different display color when the track is displayed on
the map.
6. To display 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, refer to 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.
39
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. Once
activated, 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 key:
1. Press NAV, highlight Navigate Track, and press ENTER.
2. Highlight the track you want to navigate and press ENTER.
Selecting a Saved Track
3. Use the Rocker key to select the point you want to navigate
to (TracBack to) and press ENTER.
40
TracBack Tips
Once a TracBack has been activated, 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 track log at the point that you want to go
back to (such as a dock or campsite).
• The Record Mode option on the Active Track tab must be set
to Fill or Wrap.
• If the track log Interval option on the Active tab is set to
the Time option, the route may not navigate your exact path
(keep the interval set to Resolution for best performance).
• If the receiver is turned off or satellite coverage is lost during
your trip, TracBack draws a straight line between any point
where coverage was lost and where it resumed.
• If the changes in distance and direction of your track are too
complex, 300 waypoints may not mark your path accurately.
The receiver then uses the most significant points of your
track so there will be fewer changes in direction.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > FOLLOWING A MARINE ROUTE
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 43.
Compass Page
View Your Path on the Highway Page
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
“Compass Page” beginning on page 48.
GPSMAP 276C Owner’s Manual
Whenever a route has been activated, the Highway page provides
digital and graphic steering guidance to the destination. A compass
ribbon is displayed 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 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 “Highway Page” beginning on page 50.
41
BASIC OPERATION IN MARINE MODE > FOLLOWING A MARINE ROUTE
See Your Progress on the Active Route Page
Whenever you have activated 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 beginning
on page 52.
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 is displayed at the top of the page to show your
current heading with a red, vertical bar. To stay on course, steer
towards 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.
Position Data Page
Active Goto (Route) Page
42
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > MAP PAGE
MARINE MODE PAGES AND FEATURES
This section discusses the major pages in Marine Mode, such as
the Map and Compass pages, as well as some additional marine
features, such as DSC and the marine timer.
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
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.
Map Page
The GPSMAP 276C features a real-time moving map that can do
much more than just plot your course. The Map page displays 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 basic map operating modes, position mode and pan mode,
determine what cartography is shown on the map display. Position
mode pans the map to keep your present position in the display area.
The position marker shows your travel on the Map page. The
GPSMAP 276C always powers up in position mode, with the last
known location centered on the map. When you press the Rocker
key, the GPSMAP 276C enters pan mode, which moves the map to
keep the white arrow (map pointer) within the display area.
GPSMAP 276C Owner’s Manual
Data Fields
Current
Location
Map Scale
Map Page
Map Orientation
There are two map orientation options: North Up orients the map
like a paper map, while Track Up orients the map in the direction
of travel. When using Track Up, the North arrow indicates the
orientation. To change the map orientation, press MENU to open
the Map page. Press MENU again. Select Set Up Map and press
ENTER. Refer to page 78 for information.
43
MARINE MODE PAGES AND FEATURES > MAP PAGE
Zooming In and Out of the Map
The map display has 28 available zoom scales ranging 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 displayed
at the bottom right of the data window.
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.
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 displays cartography as long as there is
chart information available for the zoom scale you have selected.
Map coverage conforms to the following conditions:
• Cartography is displayed when the selected zoom scale is
covered by either the internal basemap or other MapSource
data loaded onto a data card.
• When the selected zoom scale is covered by both the internal
database and data card map information, the cartography with
the best resolution is displayed.
• When the selected zoom scale exceeds the resolution of the
data in use, “overzoom” appears below the map scale.
No additional data is available
• When external data (such as MapSource data) is used, “map
card” appears below the map scale.
Using detailed maps loaded on the data card
44
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > MAP PAGE
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 may not be visible on the
display screen when you pan the map.
To pan the map:
Press Up, Down, Right, or Left on the Rocker key.
The panning arrow moves the map so you can view different
parts of the map.
Panning Arrow
data window:
Shows the
distance and
bearing from
your present
location
and arrow’s
position
coordinates.
Map feature
highlighted
As you move the arrow, the distance and bearing from your present
position 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 position update as you move.
To re-center your position on the screen:
When you are finished panning the Map, press QUIT.
The map automatically moves to show your present location,
and the unit returns to position mode.
The arrow may also be used to select on-screen map items, allowing
you to review a selected item directly from the map display.
Panning the Map
GPSMAP 276C Owner’s Manual
45
MARINE MODE PAGES AND FEATURES > MAP PAGE
To view details about an on-screen point:
1. Use the Rocker key to move the arrow to the desired
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 position displayed 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 displayed 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. If desired, use the Rocker key to highlight the extra tabs and
view the information.
4. Select an on-screen button and press ENTER. 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. To quickly
declutter the map, press ENTER.
To declutter the Map page:
1. From the Map page, press MENU to open the options menu.
2. Use the Rocker key to highlight Declutter and press
ENTER.
3. Press ENTER again to return the detail to the map display.
You can also press MENU, highlight Declutter On/Declutter Off,
and press ENTER.
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GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > MAP PAGE
Measuring Distance
You can measure the distance and bearing between two map items.
To measure the bearing/distance between two points:
1. From 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
position with ENT REF below it.
3. Move the arrow to the desired 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.
GPSMAP 276C Owner’s Manual
Push pin
indicating
the beginning
point of the
measurement
End point of
measurement,
labeled “ENT
REF”
Measure Distance
4. Move the arrow to the point want to measure to. The bearing
and distance from the reference point and arrow coordinates
are displayed in the data window at the top of the display.
5. Press QUIT to finish.
47
MARINE MODE PAGES AND FEATURES > COMPASS PAGE
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
Bug Indicator
Turning On the Compass Page
The Compass page is on by default in Marine Mode but off by
default in Automotive Mode.
To show the Compass page in Automotive Mode:
Compass Arrow
Data Fields
Compass Page in Marine Mode
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 ground is indicated by an arrow in the middle of the compass
ring and a bearing “bug” on the outside of the compass ring.
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, then continue in that direction.
48
NOTE: You must be moving for the compass to accurately
update and display your heading.
1. Press MENU twice to display the Main Menu.
2. Use the Rocker key to highlight the Display tab.
3. Highlight the Compass page field and press ENTER. Select
On and press ENTER.
Compass Page Options
The options menu on the Compass page allows you 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, refer to page 116. When the Compass page is open, press
MENU to open the options menu.
Show Course Pointer—displays the Course Pointer that shows how
to get back on course.
Show Bug Indicator—displays the bearing bug indicator (the
purple tick mark on the compass ring).
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > COMPASS PAGE
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
may 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
with the GPSMAP 276C by pressing a few buttons.
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 is displayed.
2. Press MENU.
3. Use the Rocker key to highlight Set Up Page Layout and
press ENTER.
4. Highlight 2 Columns With Timer and press ENTER. The
Marine Timer is displayed in the lower right corner.
To use the Marine Timer:
1. Press the Rocker key 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 key during
the timing to quickly select a different length of time.
3. Press ENTER to stop timing.
GPSMAP 276C Owner’s Manual
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 in the Main Menu.
To set the Marine Timer:
1. Press MENU twice to open the Main Menu.
2. Press the Rocker key down to select Setup and then left to
select the Timers 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 key to enter a new time.
49
MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE
Highway Page
To hide/show the Highway page:
The Highway page is available in both Marine Mode and
Automotive Mode, though it is not displayed by default in
Automotive Mode. See the directions to the right to display the
Highway page. Press PAGE repeatedly to open the Highway page.
1. Press MENU twice to display the Main Menu.
2. Use the Rocker key 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.
Using the Highway Page
To stay on course, steer towards 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 displaying useful
navigation information. A compass ribbon is displayed 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.
50
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 displayed. You can zoom in or out to display a larger or smaller
view of the highway.
To change the highway perspective scale:
•
•
Press IN to zoom in.
Press OUT to zoom out.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE
Highway Page Options
The Highway page options menu allows you to define the data fields
and select which waypoints and track are displayed on the screen.
The data fields, located along the right side of the page, provide a
user-selectable layout of various types of useful data. The layout
may also be changed to display additional data fields.
To display and select the Highway page Options:
1.
2.
3.
4.
Press PAGE repeatedly until the Highway page is displayed.
Press MENU.
Use the Rocker key to highlight the desired option.
Press ENTER.
Highway Page Options Menu
GPSMAP 276C Owner’s Manual
The following options are available from the Highway page menu:
Set Up Page Layout—allows you to choose the number of data
fields that appear on the Highway page.
Change Data Fields—allows you to specify the type of data
displayed in each data field on the Highway page. This option
is available from any of the main pages. See page 116 of the
“Appendix” for a listing of the data fields.
Set Up Highway—displays 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.
Set Up Highway
51
MARINE MODE PAGES AND FEATURES > ACTIVE ROUTE PAGE
Active Route Page
Whenever you have activated a route in the GPSMAP 276C, the
Active Route Page shows each point (waypoint or map item) of the
active route, with the point name, Course, Distance, and several
other fields of information. The current destination point, the active
point, is marked with an arrow icon. 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 display the Active Route page.
Active Route Page Options
The following route options are available by pressing MENU:
Active Route Page Options Menu
Deactivate—stops route navigation.
Edit on Map—allows you to edit the route on the map. See page 24.
Add Waypoint—inserts a point before the highlighted waypoint or
add a point(s) to the end of the route.
Remove Waypoint—deletes the selected waypoint from the route.
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.
Change Data Fields—allows you to customize the data fields
displayed on the Active Route Page.
52
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > POSITION DATA PAGE
Position Data Page
The Position Data page displays important navigation data while
navigating a route in Marine Mode. By default, the page displays
a compass ribbon, your current latitude and longitude, the current
date and time, the location you are traveling from, and eight userselectable data fields. The compass ribbon is displayed at the top
of the page to show your current heading with a red, vertical bar.
To stay on course, steer towards the violet bar (or arrows) until it is
aligned with the red bar.
Press PAGE repeatedly to open the Position Data page.
“Appendix.” You can also select one of the following options:
Position Data Page Options Menu
Change Nearest Type—allows you to specify the type of item to be
used as the nearest item (displayed in the lower-left data field). The
choices change based upon the Usage Mode you are currently using.
Waypoint is
selected as the
Nearest Type.
Coronado, CA
is the nearest
waypoint.
Reset Trip—clears trip information, except the maximum speed and
the odometer.
Reset Max Speed—clears the maximum speed.
Position Data Page
Position Data Page Options
With the Position Data page open, press MENU to open the options
menu. You can set up the layout of the page and change the data
fields. For an explanation of the data fields, refer to page 116 in the
GPSMAP 276C Owner’s Manual
Reset Odometer—clears the running total of the distance traveled
since the odometer was last reset.
Reset All—clears all trip information including the maximum speed
and odometer.
53
MARINE MODE PAGES AND FEATURES > DSC
DSC
Understanding Distress Calls
For more information about Digital Selective Calling and Maritime
Mobile Service Identity (MMSI) numbers, refer to pages 113–114 in
the “Appendix.”
You can enter a caller’s name, if it is known. The caller’s name
replaces the MMSI number as a reference once entered.
The DSC page of the Main Menu (Marine Mode only) allows you
to control and set up the Digital Selective Calling (DSC) features on
the GPSMAP 276C. Digital Selective Calling (DSC) uses marine
VHF radio and Global Positioning System (GPS) technologies to
transmit and receive location information. DSC is used by mariners
for two major operations: Distress Calls and Position Reporting.
With your GPSMAP 276C properly connected to a VHF radio with
DSC output, you may 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.
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.
DSC Page
54
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > DSC
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 shown below.
DSC Call List
The Call List displays the 50 most recent calls, even if the unit is left
unattended. The Call List only displays 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.
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 keypad to highlight the call
you want to review.
3. Press ENTER to open the DSC Entry Review page.
DSC Call List
DSC Entry Review Page
GPSMAP 276C Owner’s Manual
55
MARINE MODE PAGES AND FEATURES > DSC
DSC Log
When DSC calls are received, they are automatically stored in the
Log, with the latest call at the top. The unit may store up to 100
calls; after 100 calls are received, the oldest log file is removed
when a new call is received. Press MENU to sort the list and delete
entries.
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.
DSC
Directory
entries. Press
ENTER to
open the entry
review page.
Blank entry.
Press ENTER
to add a
Directory entry.
DSC Directory list
DSC Log
Receiving a Position Report or Distress Call
After you have received a Position Report or a Distress Call, you
can quickly navigate to the location. Highlight the desired 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.
56
To add a new Directory entry:
1. Open the DSC Directory in the Main Menu.
2. Use the Rocker key 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.
4. When finished, highlight OK and press ENTER.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > DSC
Setting up DSC
Enter the
MMSI number,
Name, and a
Comment (if
desired) in the
fields.
Highlight
OK and press
ENTER to save
the Directory
Entry.
New Directory Item Page
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 is displayed under the corresponding MMSI number.
The DSC Setup tab allows you to turn DSC On and Off. If you have
more than one chartplotter and only want DSC to display on another
chartplotter, turn DSC off on this unit.
This Setup 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.
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.
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.
GPSMAP 276C Owner’s Manual
DSC Setup
57
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.
Refer to the Marine Mode sections for operations and information not found in this section.
Automotive Mode Page Sequence
Automotive Mode features two main pages: the Map and Trip Computer pages. Optional Highway and Compass pages may be enabled 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
Optional Compass
Page (see page 48)
Optional Highway
Page (see page 50)
Current Route Page
Trip Computer Page
To switch usage modes:
1. Press and hold the PAGE button.
2. Use the Rocker key to select either Automotive or Marine and press ENTER.
58
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE
Navigating in Automotive Mode
When you initiate navigation in Automotive Mode, the GPSMAP
276C automatically generates a turn-by-turn route. In some
instances, you may need to select the Follow Roads option to
generate a turn-by-turn route.
Once you are actively navigating, you will see a magenta line that
always runs from your current location to your 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.
To go to a highlighted map item:
1. Use the Rocker key to highlight the item you would like to
navigate to on the Map page.
2. Press NAV. Go To <point name> is added to the list of
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.
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 key 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.
GPSMAP 276C Owner’s Manual
Navigate Menu
with Map Feature highlighted
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.
59
BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE
To create a new route:
1. Press the NAV key to open the Navigate Menu.
2. Highlight New Route and press ENTER.
3. From the Find Menu, highlight Waypoints and press ENTER.
(You may 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 display
the Waypoint page.
Waypoint Review Page
Activating a Go To using the Find Menu
5. The Waypoint page automatically opens. With the Go To
button highlighted, press ENTER to begin navigation.
60
To go to a destination using the Find Menu:
1. Press FIND to open the Find Menu.
2. Using the Rocker key, highlight the desired category, such
as Cities, and press ENTER.
3. Press ENTER and use the Rocker key 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.
Finding an item using the Containing field: The unit searches for items
containing the letter combination you enter and displays them in the list.
3. Highlight the desired item from the list and press ENTER.
4. Press ENTER when the Go To button is highlighted.
For complete information about finding an item, refer to the
“Finding an Item” section on page 18.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE
Following a Saved Route
The Navigate Menu also allows you to follow a saved track or route.
If you want to follow roads on your route, be sure that you press
MENU and select Follow Roads on the Active Route page.
To follow a saved route in Automotive Mode:
Press the NAV key to open the Navigate Menu.
Highlight Navigate Route and press ENTER.
Highlight the route you want to activate and press ENTER.
The Active Route page automatically opens with the route
activated. Press MENU to open the options menu.
5. Highlight Follow Roads and press ENTER to create a turnby-turn route (auto-route), which is displayed in the Current
Route page.
1.
2.
3.
4.
You can also activate a Saved Route from the Saved Route tab in the
Main Menu.
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 the NAV key.
Navigate Menu in Automotive Mode
2. Use the Rocker key to highlight Stop Navigation and press
ENTER.
To resume navigation:
1. After you have stopped navigation, press the NAV key.
2. Use the Rocker key to highlight Resume Navigation and
press ENTER.
GPSMAP 276C Owner’s Manual
61
BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE
Editing Your Route
Once 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 the NAV key to open the Navigate Menu,
shown below.
Navigate Menu in Automotive Mode
While navigating a course
62
Entering Custom Avoids
Custom Avoids allows you to enter specific areas and roads that
you would like to avoid in your navigation. Custom Avoids apply
to all routes, but Detours apply to only the active route. Custom
Avoids can be added while you are navigating a route or before you
navigate.
To enter a custom avoid:
1. Press the NAV key while navigating to a destination in
Automotive Mode. Or, open the Map page and press MENU.
2. Select Custom Avoids. 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 key to move the arrow to the first point in the
avoidance area. Press ENTER to select the first point.
6. Move the arrow to the end point and press ENTER. During
route calculation and navigation, the GPSMAP 276C will
avoid the area within the box or the selected area of the road.
7. When finished, highlight the OK button and press ENTER.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE
Creating a Detour
If, while navigating a route, there is road construction or some other
form of a detour, you can have your GPSMAP 276C create a detour
route for you.
3. The Add/Edit Vias window opens. Highlight Add Via Point
and press ENTER.
To create a Detour:
1. While navigating a course, press the NAV key.
2. Select Detour from the Navigate Menu.
3. Select the desired distance and press ENTER. The GPSMAP
276C will recalculate your course based upon your detour
distance.
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 the NAV key to open the
Navigate Menu.
2. Use the Rocker key to select Edit Vias and press ENTER.
GPSMAP 276C Owner’s Manual
Add/Edit Vias Page
Showing the original route without via points
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 key to select the
desired 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 18. Remember you can press MENU while the Find
Menu is open to find an item near another location, such as
the destination.
6. The new point is added to the route as displayed in the Add/
Edit Vias page. Continue 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.
63
BASIC OPERATION IN AUTOMOTIVE MODE > FOLLOWING AN AUTOMOTIVE ROUTE
Following an Automotive Route
Watch your Trip Data
Track your Progress with the Map Page
See your Next Turn with the Current Route Page
The GPSMAP 276C guides you to your destination using many
tools, such as the Map page and Current Route 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 displayed in the
top bar on the Map page.
Map Page Displaying Your Route
64
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.
Whenever you have activated a turn-by-turn route in the GPSMAP
276C set in Automotive Mode, the Current Route page shows each
turn of the active route. Fore more information see page 66.
Current Route Page
GPSMAP 276C Owner’s Manual
AUTOMOTIVE MODE PAGES AND FEATURES > MAP PAGE
AUTOMOTIVE MODE PAGES AND FEATURES
This section discusses the major pages in Automotive Mode, such
as the Map page, as well as some additional features, such as Routes
and Points. For information about pages and features not discussed
here, refer to the “Marine Mode Pages and Features” section.
Press the zoom keys (IN and OUT) to change the map scale. Some
items on the map are only displayed if the map is zoomed in to a
certain level.
Press ENTER to quickly declutter (remove unwanted items) from
the Map page.
Press MENU to open the options menu for the Map page.
Map Page
Refer to page 43 in Marine Mode Pages and Features section for
more details about the Map page.
In Automotive Mode, by default, four user-selectable data fields
appear on the right side of the screen that can be configured to
display any one of the possible data options. The top of the screen
displays the GPS status or the route leg. You can also add additional
data fields to the page or select a full screen map without data fields.
Show and hide the heading line from the options menu.
Use the Rocker key to measure the distance between two objects on
the map.
Change the page layout and data fields to customize the Map page.
See page 78 for instructions.
Data Fields
Current
Location
Map Scale
Map Page
GPSMAP 276C Owner’s Manual
65
AUTOMOTIVE MODE PAGES AND FEATURES > CURRENT ROUTE PAGE
Current Route Page
Whenever you have activated 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.
Next Turn Page
Saving the Current Route
Current Route Page
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
point and destination as the route name. Press ENTER when OK is
highlighted to complete saving the route.
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 display similar information, just in a different layout. The
Next Turn page displays your next turn on a map.
66
GPSMAP 276C Owner’s Manual
AUTOMOTIVE MODE PAGES AND FEATURES > TRIP COMPUTER PAGE
Trip Computer Page
The Trip Computer page displays 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
Trip Computer Page
Reset the Trip Computer before beginning a trip. If you make
frequent stops, leave the GPSMAP 276C powered on in order to
receive satellites. This allows the unit to accurately measure elapsed
time during the trip.
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 the
desired option and press ENTER.
GPSMAP 276C Owner’s Manual
Set Up Page Layout—allows you to choose the layout and number
of data fields. You can change the layout of the Trip Computer to the
Position Data Page layout while still in Automotive Mode. You can
also then change the data fields on the Position Data Page to be more
useful while in Automotive Mode.
Change Nearest Type—allows you to specify the type of item to be
used as the nearest item (displayed in the lower-left data field of the
Position Data (2 Columns) layout). The choices change based upon
the Usage Mode you are currently using.
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.
67
ADDITIONAL FEATURES > SETTING ALARMS
ADDITIONAL PAGES AND FEATURES
The Main Menu features some additional pages that will be useful
to you as you plan trips and use your GPSMAP 276C. Some of these
pages have already been discussed in-depth in previous sections.
This section only contains the additional pages and features found in
the Main Menu that have not been discussed yet.
Press the MENU key twice to open the Main Menu.
Setting Alarms
The Alarms tab of the Main Menu allows you 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.
To set an alarm:
1.
2.
3.
4.
68
Press MENU twice to open the Main Menu.
Use the Rocker key to open the Alarms tab.
Highlight the alarm name to activate and press ENTER.
Change the mode to On (or the desired mode, where
available) and press ENTER. If necessary, highlight the
next field to the right and press ENTER, enter the desired
settings, and press ENTER to finish.
Navigation Alarms Tab
To set a persistent alarm:
1. Press MENU twice to open the Main Menu.
2. Use the Rocker key to open the Alarms tab.
3. Highlight the box next to the alarm you would like to make
persistent (for example, Restricted Areas).
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.
Navigation (Nav) Alarms
Next Turn—sets an alarm to indicate the next turn in a route. Select
Dist to enter a specific distance before you reach the next turn to
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.
GPSMAP 276C Owner’s Manual
ADDITIONAL FEATURES > SETTING ALARMS
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.
Sonar Alarms
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 have exceeded a
specified drift distance. Select On and then enter a distance.
System Alarms
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
of the user-set value. Select On and then enter a specific distance.
Sonar Alarms Tab
Shallow Water/Deep Water—sets an alarm to sound when you
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
data for this function to work.
Water Temp—sets an alarm to indicate if the water temperature 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 have exceeded a specified
drift distance. Select On and then enter a specific distance.
GPSMAP 276C Owner’s Manual
Fish—sets an alarm to sound when fish are detected with sonar.
69
ADDITIONAL FEATURES > USING THE CALENDAR
Using the Calendar
The Calendar allows you to plan trips while also displaying sun and
moon and hunting and fishing information for the day.
To add a route (or point) to the calendar:
1. Press MENU twice to open the Main Menu.
2. Highlight Calendar from the vertical list of tabs. The current
day is displayed in Day View.
Highlight an arrow and press ENTER to change the date in the view.
Sunrise and set
times for the
current location
and date.
List of Points
and Routes
added to this
date.
Calendar Tab in Day View
3. Press the MENU key to display the options menu. Highlight
Add Route (or Add Point) and press ENTER.
4. From the pop-up route list (or the Find Menu if Add Point was
selected), select the route you want to add to the calendar
and press ENTER.
70
Day View
The Day View displays sunrise and sunset times for your current
date and location. A list of points and routes for the day are
displayed 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 an options menu.
Week View
The Week View 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
The Month View 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.
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
jump to the Sun & Moon Information or Hunt & Fish tab, highlight
View Sun and Moon or View Hunt and Fish and press ENTER.
GPSMAP 276C Owner’s Manual
ADDITIONAL FEATURES > VIEWING CELESTIAL INFORMATION
Viewing Celestial Information
The Celestial tab of the Main Menu displays tide information, sun
and moon information, and hunting and fishing information. You
may display this data for your current position, a position from the
map, or a waypoint location. Also, you may select a different date
and time, or use the current data.
To access the Celestial Tabs of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight Celestial from the vertical list of tabs.
3. Use the Rocker key to display the desired tab, such as Sun
& Moon.
Tide Tab
The Tide tab contains a graphical chart that displays tide station
information in a 24-hour span starting at midnight station time. You
can choose from different dates and over 3000 tide stations.
Enter the Date for which you want to Select the Tide Station for which you
view the tide information.
want to view the information.
Time
Height of tide
Smallest and
Largest tides
for the AM
hours
Tide Tab
Smallest and
Largest tides
for the PM
hours
The top of the page displays 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.
GPSMAP 276C Owner’s Manual
71
ADDITIONAL FEATURES > VIEWING CELESTIAL INFORMATION
To view a tide chart for a different tide station:
1. From the Tide 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 if desired. The list is then
updated with your search requirements.
3. Select the desired station from the list and press ENTER.
4. The Tide Station Information page opens. Highlight OK and
press ENTER.
5. The Tide tab displays again showing the tide chart for the
selected tide station.
To view the tide chart for another date:
To view a chart’s details for another time during the
day (other than current time):
1. From the Tide tab with the desired chart displayed, press
MENU and select Move Cursor.
2. Press the Rocker key 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 key to highlight the Date field. Then press
Down to activate the cursor (pan) mode.
2. Scroll the chart right to view the next day or left to view the
previous day.
1. From the Tide tab with the desired chart displayed, highlight
the On field and press ENTER.
2. ENTER the desired date with the Rocker key 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 displays 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.
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GPSMAP 276C Owner’s Manual
ADDITIONAL FEATURES > VIEWING CELESTIAL INFORMATION
Sun & Moon Tab
The Sun & Moon tab provides you with sun rise/set and moon
rise/set times. A graphic display of the moon phase is also displayed.
You may 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 tab.
To view Sun & Moon information for a different date:
1. Use the Rocker key to highlight the Date field and press
ENTER.
2. Use the Rocker key to change the digits of the date to the
desired date. 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 displays 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
desired date
and location
Moon Phase
Animation
controls for the
sky view
Location of the
Sun and Moon
in the sky view
Sun & Moon Tab
To view Sun & Moon information for a different
location:
1. Use the Rocker key 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
displays 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.
GPSMAP 276C Owner’s Manual
73
ADDITIONAL FEATURES > VIEWING CELESTIAL INFORMATION
Hunt & Fish Tab
The Hunt & Fish tab provides you with predictions of the good and
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. Highlight Celestial from the vertical list of tabs using the
Rocker key.
3. Use the Rocker key to display the Hunt & Fish tab.
To view Hunt & Fish information for a different date:
1. Highlight the Date field and press ENTER.
2. Use the Rocker key to change the digits of the date to the
desired date. 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 displays the
information for the date you entered.
To use the current date again, highlight the Date field. Press MENU,
highlight Use Current Date, and press ENTER.
To view Hunt & Fish information for a different
location:
Hunt & Fish Tab
1. Use the Rocker key to highlight the From field and
press ENTER.
2. Highlight Use Find Menu and press ENTER. The Find Menu
automatically opens.
3. Select a point and press ENTER.
4. On the information page, press ENTER. The unit displays the
Hunt & Fish information for the selected location.
To use the current location, highlight the From field. Press ENTER,
highlight Current Location, and press ENTER.
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GPSMAP 276C Owner’s Manual
ADDITIONAL FEATURES > VIEWING MESSAGES
Viewing Messages
The Message tab of the Main Menu displays a list of messages
generated by your GPSMAP 276C. Use the Rocker key to scroll
through the entire list of messages on the Log tab. Use the Log Filter
tab to display only the message types that you want to view.
To show/hide messages using the Log Filter:
1. Press MENU twice to open the Main Menu.
2. Highlight Message from the vertical list of tabs.
3. Use the Rocker key to highlight the Log Filter tab. By
default all messages are displayed.
To view the messages:
1. Press MENU twice to open the Main Menu.
2. Highlight Message from the vertical list of tabs.
Message Log Filter Tab
Message Log Tab
3. Use the Rocker key to highlight the desired message. Press
ENTER to view detailed information about that message.
GPSMAP 276C Owner’s Manual
4. Use the Rocker key to highlight the message you want to
hide and press ENTER.
5. The message name then appears in the Hide window.
Highlight the message and press ENTER to show it again.
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ADDITIONAL FEATURES > VIEWING THE TEMPERATURE
Viewing the Temperature
NOTE: You must be receiving proper sonar data from another
device, such as a Garmin GSD 20 Sounder Module, to view
temperature information.
The Temperature tab provides a visual graph of water temperature
changes over a period of time. The graph reads from right to left so
that the most recent temperature measured is displayed on the far
right side of the graph. The dotted lines within the graph indicate
intervals in the temperature scale and the duration of time.
NOTE: Select Temp for the Transducer type in the Sonar Setup.
See “Setting up the Sonar” on page 96 for more information.
Press MENU two times to open the Main Menu. Select Setup from
the vertical row of tabs on the left, then select Temperature from
the row of tabs along the top of the screen.
Changing the Temperature Display
The graph will adjust and display the temperatures changes
according to the Temperature Scale and Time Duration settings.
Temperature Scale—select the desired degree span from the list.
Select Auto to have the unit automatically determine the best range,
or select a span of 2, 4, 6, 8 or 10 degrees.
Time Duration—set how fast or slow the temperature log scrolls; a
shorter time duration means a faster temperature log scroll. Select a
duration from 1 minute to 2.5 hours.
Reset the Temperature Graph
To reset the scale range for the temperature graph, press MENU,
highlight Reset Auto Scale, and press ENTER. This is useful
when the scale spans a large range due to extreme temperature
changes. You can only reset the scale when you select Auto for the
Temperature Scale.
To restore the temperature graph to defaults, press MENU, highlight
Restore Default, and press ENTER.
Temperature Tab
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GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
CUSTOMIZING YOUR GPSMAP 276C
The Main Menu provides access to various waypoint, system,
navigation and interface management, and setup menus.
Setting up the System
To customize how your GPSMAP 276C looks and sounds, adjust
certain system settings in the Main Menu.
Adding a Welcome Message
The Welcome tab allows you to enter information, such as your
name and address, that the unit can display when it is turned on.
This feature can be helpful if your unit is ever misplaced.
To open the Welcome tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Welcome
from the row of tabs along the top of the page.
GPSMAP 276C Owner’s Manual
Welcome Tab of the Setup Tab
Enter the desired information in the fields. You do not need to enter
information in every field.
To display this information at power up, highlight the box next to
Show at Power-up. Press ENTER to place a check mark in the box.
To hide the welcome information at power-up, remove the check
mark from the box.
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CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Changing the Page Layout and Data Fields
You can adjust how the following pages look on the screen: Map,
Compass, Highway, Position Data, Trip Computer, and optional
Sonar page. You can adjust the data fields on all of those pages too.
To set up the page layout:
1.
2.
3.
4.
Press PAGE to display the page you want to change.
Press MENU to open the options menu.
Highlight Set Up Page Layout and press ENTER.
Select the desired option and press ENTER. The options
vary between the three usage modes and the page you are
setting up.
To change a data field display:
Press PAGE to display the page you want to change.
Press MENU to open the options menu.
Highlight Change Data Fields and press ENTER
Highlight the data field you want to change and press
ENTER.
5. Press Up or Down on the Rocker key to highlight the type of
data you want to display and press ENTER.
6. Press QUIT to exit.
1.
2.
3.
4.
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Changing a Data Field
Setting up the Map Page
The Map page Setup allows you to adjust the way items are
displayed on the Map page.
To change a map setup option:
1. From 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 key to highlight the desired
file tab, then Up or Down on the Rocker key to highlight to
the field you want to change and press ENTER.
4. Press Up or Down on the Rocker key to highlight the desired
setting and press ENTER.
5. Press PAGE or QUIT to exit.
GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Additional Map Data Displayed
You can view the data that is currently loaded on your GPSMAP
276C unit and data card.
To review/change map information:
1. Access the Map page and press MENU.
2. From the options menu, highlight Map Information and
press ENTER.
Individual Map Information Page
Showing the individual maps that are in the selected Map Family
Map Family
highlighted.
Press ENTER
to view the
individual maps
in the family.
Data Card Information Page
3. The first page shows the Map Families stored on the data
card and unit and whether they are shown on the Map page.
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.
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/deselect individual maps for display on the Map
page, highlight the box next to the desired map and press
ENTER to check/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.
4. To view the list of maps within a Map Family, highlight the
name of the Map Family and press ENTER.
GPSMAP 276C Owner’s Manual
79
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Changing the Display
The Display tab of the Main Menu allows you to set several features
of the display, such as what pages to display in the Main page
sequence and how long the backlight stays on.
To view the Display tab:
1. Press MENU twice to open the Main Menu.
2. Highlight Display from the vertical list of tabs.
Backlight Timeout—sets the backlight to stay on once it is turned
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—allows the unit to adjust the backlight for
optimum viewing during twilight times.
Highway Page—enables the page and places it in the Main page
sequence.
Compass Page—enables the page and places it in the Main page
sequence.
Backlight Intensity—turns the backlight up or down. Press the
Rocker key Right to increase the intensity or Left to decrease.
Display Tab
Color Mode—sets the display to Day, Night, or Auto color mode.
Select Auto to automatically switch from day to night at sunset and
change back at sunrise.
Main Menu—enables the main menu tabs to contain text and icons
(default) or text tabs only.
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GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Changing the Sounds
The Sound tab of the Main Menu allows you to customize the
sounds your GPSMAP 276C makes to suit your needs.
To view the Sound tab:
1. Press MENU twice to open the Main Menu.
2. Highlight Sound from the vertical list of tabs.
Attention Tone—turns on and off the attention tone that sounds
before the vocal prompts.
Voice Prompt—sets the vocal prompt to operate for Guidance and
Status, Route Guidance Only, or No Voice Prompts.
Voice Language—sets the language for vocal prompts.
Speaker Volume—sets the external speaker volume (when used).
Press the Rocker key Right to increase the volume or Left to
decrease.
Sound Tab
Beeper—sets the beeper to chime during keypresses and alarms
(Key and Alarm) or on Alarms Only.
GPSMAP 276C Owner’s Manual
81
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Changing the System Settings
To open the System tab, press MENU twice to open the Main Menu.
Select Setup from the vertical tab list. Then select System from the
row of tabs along the top of the page.
Usage Mode—sets the unit to the desired 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—allows you to select from various languages for
the unit’s on-screen display.
WAAS—disable and enable WAAS from this field.
External Power Off—allows you to select whether the GPSMAP
276C remains on (Stay On) or the unit turns off (Turn Off) when
external power is removed from the unit.
System Setup Tab
System Mode—sets the unit to operate in Normal mode, Battery
Saver mode, or Simulator mode (for practice ONLY).
82
External Power On—allows you to turn the GPSMAP 276C on
(Turn On) or charge the battery (Charge Battery) when external
power is applied to the unit.
GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Setting the Timers
To open the Timers tab, press MENU twice, select Setup from the
vertical tab list, and Timers from the row of tabs along the top.
Changing the Time
The Time tab allows you to set the time format and zone. You can
also set the unit to conform to Daylight Saving Time. The current
time and date are displayed at the bottom of the page.
To open the Time tab, press MENU twice, select Setup from the
vertical tab list, and Time from the row of tabs along the top.
Timers Tab of the Setup 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 to the right.
Marine—displayed on the Compass page. See page 49.
Since Midnight—the time the unit has been turned on since
midnight. This will reset if you restore All Unit Defaults from the
System tab.
GPSMAP 276C Owner’s Manual
Time Tab of the Setup Tab
Time Zone—allows you to choose a city in your correct time zone
so the GPSMAP 276C will show the correct local time. Select
Other to enter a UTC Offset.
If the incorrect date is displayed, press MENU, highlight Set Date,
and press ENTER. You will then be prompted to enter the current
year. The GPSMAP 276C will use this information when gathering
satellite data to display the correct date.
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CUSTOMIZING YOUR GPSMAP 276C > SETTING UP THE SYSTEM
Customizing the Units
The Units tab allows you to customize measurement units for the
entire system. To open the Units tab, press MENU twice to open
the Main Menu. Select Setup from the vertical tab list. Then select
Units from the row of tabs along the top of the page.
Restoring Defaults
The following tabs in the Main Menu allow you to restore their
defaults: Track, Alarms, Display, Sound, and Setup.
To restore defaults:
1. Press MENU twice to open the Main Menu.
2. Use the Rocker key to highlight the desired tab.
3. Press Menu to open the options menu.
Units Tab
Distance and Speed—select the unit to display your speed and
distance traveled.
Direction Display—select the unit to display 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 display the temperature.
Setup Tab Options Menu
4. Highlight Restore Default.
5. Press ENTER to restore the tab to the defaults.
To restore all of unit’s settings to the factory defaults at once, select
All Unit Defaults from the options menu of the Setup tab.
Elevation—select the unit to display your altitude.
Depth—select the unit to display the depth.
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GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > CUSTOMIZING THE ROUTING AND GUIDANCE SETTINGS
Customizing the Routing and Guidance
Settings
You can change the way the GPSMAP 276C generates routes in
Automotive Mode. You can also change the way the GPSMAP 276C
guides you during navigation.
Road Routing Settings
To open the Road Routing tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Road
Routing from the row of tabs along the top of the page.
Route Preference—allows the unit to calculates routes based on:
• Faster Time—routes calculated are faster to drive but may be
longer in distance.
• Shorter Distance—routes calculated are shorter in distance
but may take more time to drive.
• Off Road—creates a direct line from your current location
to your destination. This is useful when you are travelling
outside of the detailed map coverage area or where no roads
exist.
Ask Me My Preference—determines whether you will be asked to
select a Route Preference before route calculations.
Calculation Method—sets how the unit searches for the route.
Road Routing Setup Tab
GPSMAP 276C Owner’s Manual
• 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
a longer calculation time.
• Best Route—generates the most optimal route but takes the
longest time to calculate.
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CUSTOMIZING YOUR GPSMAP 276C > CUSTOMIZING THE ROUTING AND GUIDANCE SETTINGS
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
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. Refer to page 62 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 especially nice if you
want to avoid major highways, for example. Select Auto Set to use
preset values.
Guidance Settings
To open the Guidance tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Guidance
from the row of tabs along the top of the page.
86
Guidance Tab of the Setup Tab
Off-Route Recalculation—allows you to set whether the unit
prompts you when it is recalculating your route (Prompted),
or whether the unit recalculates automatically. Set whether the
unit announces the recalculation (Automatic - Announced) or
recalculates silently (Automatic - Silent). You can also turn the offroute recalculation Off.
Next Turn Pop-up—turns the Next Turn pop-up window Off, or
opens the window when you hold the NAV key (Held NAV Key
Only), opens automatically (Automatically Only), or Both.
GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > CHANGING THE LOCATION SETTINGS
Changing the Location Settings
To open the Location tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Location
from the row of tabs along the top of the page.
Refer to the “Appendix” of this guide 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
When you change the Location Format, you change the coordinate
system in which a given position reading is displayed. The default
format is latitude and longitude in degrees, minutes, and thousandths
of a minute (hddd°mm.mmm).
You should only change the position format if you are using a map
or chart that specifies a different position 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.
You should only change the datum if you are using a map or chart
that specifies a different datum.
GPSMAP 276C Owner’s Manual
The default setting is WGS 84. The unit automatically chooses the
best datum depending upon your chosen position 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 position. True
provides headings based upon 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 position and provides magnetic north heading references
based upon the variation you enter. Enter the magnetic variation of
your current position in the Magnetic Variation field if you have
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 position. You must update the magnetic variation as
your position changes. Failure to update this setting may result
in substantial differences between the information displayed on
your unit and external references, such as a magnetic compass.
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CUSTOMIZING YOUR GPSMAP 276C > CHANGING THE DATA FORMAT
Changing the Data Format
The COM 1 and COM 2 tabs allow you to control the input/output
format used when connecting your unit to external devices. To open
the COM 1 or COM 2 tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select COM 1 or
COM 2 from the row of tabs along the top of the page.
COM 1 Tab of the Setup Tab
Serial Data Format—sets the data format to one of the following:
• Garmin Data Transfer—the proprietary format used to
exchange data with a PC or another Garmin GPSMAP 276C.
Garmin Data Transfer is disabled when the USB is connected,
and the unit automatically switches to USB format. When
the USB is disconnected, the USB field changes to Transfer
Mode, as shown above.
88
• GARMIN DGPS—used to connect the GPSMAP 276C with
a Garmin DGPS beacon receiver.
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 version 3.01 data and sonar NMEA
input support for the DPT, MTW, and VHW sentences.
• Text Out—allows the unit to output simple text data that
includes, data, time, position, and velocity. The Baud can be
set to 1200, 2400, 4800, or 9600.
• RTCM In—allows Differential GPS (DGPS) input using a
standard RTCM format.
• RTCM In/NMEA Out—allows Differential GPS (DGPS)
input using a standard RTCM format and also provides
NMEA 0183 version 3.01 output.
• RTCM In/Text Out—allows Differential GPS (DGPS) input
using a standard RTCM format and also outputs simple text
data that includes, data, time, position, and velocity.
• None—provides no interfacing capabilities.
GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > CHANGING THE DATA FORMAT
If you select GARMIN DGPS or RTCM In/NMEA Out format,
you can control a differential beacon receiver directly from
your GPSMAP 276C using the COM 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 scan for a frequency:
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.
Highlight
Scan and press
ENTER.
Displays the
status of the
scan
The Status field displays 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.
• Receiving—the unit is receiving DGPS signal and ready for
operation.
• Check Wiring—the unit is not making connection with
DGPS receiver.
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 key to highlight the Beacon field and press
ENTER.
2. Highlight User and press ENTER.
3. Highlight the Frequency or Bit Rate field, press ENTER, and
enter a frequency or bit rate. Press ENTER when done.
COM 1 tab of the Setup tab with GARMIN DGPS selected
GPSMAP 276C Owner’s Manual
89
CUSTOMIZING YOUR GPSMAP 276C > CHANGING THE DATA FORMAT
When the unit is receiving a DGPS signal, the SNR (Signal to Noise
Ratio) and Distance fields show data. The SNR range is 0 dB to 30
dB, with 30 being the best. The Distance may or may not show data,
depending upon the signal being broadcast from the DGPS site.
5. Select NMEA In/NMEA Out. Press ENTER.
6. Press MENU to open the options menu. Select Advanced
NMEA Setup 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
seconds to update.
To access the Advanced NMEA Output Setup:
1.
2.
3.
4.
90
Press MENU twice to open the Main Menu.
Use the Rocker key to select Setup from the vertical tab list.
Select COM 1 or COM 2 from the row of tabs along the top.
Highlight the field below Serial Data Format. Press ENTER.
Advanced NMEA Output Setup
The Advanced NMEA Output Setup page allows you 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).
GPSMAP 276C NMEA Sentence Output (NMEA version 3.01
compliant):
• Always transmitted: GPRMC, GPGGA, GPGLL, GPBWC,
GPVTG, GPXTE, GPRMB
• Switchable sentences: GPGSA, GPGSV, GPWPL, GPRTE
• GARMIN proprietary: PGRME, PGRMZ, PGRMM
GPSMAP 276C Owner’s Manual
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
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 is displayed.
Showing Sonar on the Map Page
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 the sonar feature.
To display the Sonar page on the Map page:
1. Press and hold PAGE. Highlight Marine and press ENTER.
2. Press PAGE or QUIT to display the Map page.
3. Press MENU. Use the Rocker key to highlight Set Up Page
Layout and press ENTER.
4. Highlight Map with Sonar and press ENTER.
GPSMAP 276C Owner’s Manual
Map Page with Split Screen
To resize the Map page sonar split screen:
1. After displaying the Sonar and Map page together in the split
screen, as described in the previous steps, press MENU.
2. Highlight Size Split and press ENTER.
3. Use the Rocker key to move the vertical double-arrow Right
or Left until the screen is divided how you want it.
4. Press ENTER to complete the size split.
5. To stop resizing the screen, simply press QUIT. You can also
press MENU, highlight Stop Resizing, and press ENTER to
stop resizing the screen and retain the previous split setting.
91
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. If a
GSD 20 is not attached, the Sonar page only appears when the unit
is in Simulator Mode.
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 displayed.
The top left corner displays the Adjustment Option, the depth, and
the water temperature.
The sonar returns show as red (strongest), then oranges (strong),
yellows (medium), greens (weaker), and blues (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 sonar display may 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
may 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 is displayed at the bottom of each sonar
display.
Read the “Understanding Sonar” section beginning on page 99 for
more on information about sonar.
Sonar Page
92
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > USING THE SONAR PAGE
Adjusting the Sonar Page
The Adjustment Menu allows direct access to the settings and
features most commonly used on the Sonar page. There are ten main
adjustment options available: Range, Zoom, View, Gain, Target
Level, Whiteline, Frequency, Depth Line, Noise Reject, and Scroll.
Use the Rocker and ENTER keys to make all adjustments. The
currently selected option appears in the upper left corner.
To select an adjustment option:
Use one of the following methods to select an adjustment option:
• Press the Rocker key right or left to scroll through the
adjustment options. When the desired adjustment option is
displayed, press ENTER.
• Press MENU, highlight Adjustments, and press ENTER.
Use the Rocker key to highlight the desired adjustment and
press ENTER.
Once you have selected an adjustment option, press the Rocker key
Up or Down to change the setting.
You may also press MENU and highlight the desired shortcut setting
to quickly change to commonly used settings/values.
Press ENTER to accept the new setting (or press QUIT to cancel)
and return to the Sonar page.
GPSMAP 276C Owner’s Manual
Adjustment Options
Sonar Adjustments
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—used to quickly select a display zoom scale or to split
the display. When a scale other than No Zoom is selected, the
Adjustment Menu displays a new selection labeled View or Span.
The Zoom function is divided into six display levels:
93
SETTING UP AND USING SONAR > USING THE SONAR PAGE
• 2X Split—shows two reduced-size sonar pictures at the same
time. The right half of the display screen 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—displays 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—displays the 4X zoomed picture on the full screen.
• 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—displays 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. Deactivate the zoom function by pressing
the OUT key until the No Zoom setting appears.
View/Span—available when a Zoom scale other than No Zoom is
selected. The View or Span setting is used to change 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 displays data.
94
Gain—allows you to control the sensitivity of the unit’s receiver,
which provides flexibility in what is displayed. 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 display sonar
information. A Color Bar appears on the right side of the screen as
you adjust this setting. A higher percentage results in more strongsignaled colors displayed on the sonar display. A lower percentage
results in more weaker-signaled colors displayed on the sonar
display. This setting does not increase or decrease the unit Gain.
Whiteline—controls how the unit displays information about the
bottom type (hard or soft). With Whiteline Off, the bottom return
displays as red. Set Whiteline at Normal or 1–100% to determine
bottom hardness. See page 101 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 key to move the line on the sonar display.
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > USING THE SONAR PAGE
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.
Resizing the Split Screen
You can adjust the way the split screen is displayed. This option is
only available when a zoom scale other than No Zoom is selected.
To resize the Sonar page split screen:
1. From the Sonar page split screen, press MENU.
2. Using the Rocker key, highlight Size Split, and press
ENTER.
3. Move the horizontal double-arrow Left or Right using the
Rocker key until the desired vertical width line shows, then
press ENTER.
4. If you wish to cancel this operation, press QUIT or press
MENU, highlight Stop Resizing, and press ENTER.
GPSMAP 276C Owner’s Manual
Using the Pointer on the Sonar Page
You can display the pointer (arrow) to reference sonar items and
mark underwater waypoints. This makes it easier to find and use an
object such as a stump for a future fishing location. When using this
feature, the Sonar page pauses. The depth continues to update while
the display is paused, but the unit does not show any new sonar data
until the Sonar page resumes scrolling. You may see a discontinuity
from where the sonar information stops and where it starts again.
To mark an underwater waypoint:
1. From the Sonar page, press MENU, highlight Show Pointer
and press ENTER.
2. Use the Rocker key to move the cursor to the location you
want to mark. Press ENTER. The New Map Waypoint page
appears.
3. To change the name, symbol or depth, highlight the
appropriate field and press ENTER. Make your changes and
press ENTER.
4. When you are done making changes, highlight OK and press
ENTER.
5. To return to the standard Sonar page, press QUIT; or press
MENU, highlight Hide Pointer, and press ENTER.
95
SETTING UP AND USING SONAR > SETTING UP THE SONAR
Setting up the Sonar
Use the Setup tab in the Main Menu to set up the Sonar page. Press
MENU two times to open the Main Menu. Select Setup from the
vertical row of tabs on the left, then select Sonar Setup from the
row of tabs along the top of the screen.
Depth Number—select how efficient the digital depth update rate
is. Fast Sonar Update updates quicker and is recommended for
low-noise water deeper than 50 feet. Auto is best for shallow water
or high-noise areas, has a slower screen update, and is best used if
you travel a wide variety of depths.
If the unit is unable to track the bottom for any reason, the digits in
the depth window flash on and off to alert you that the unit is not
tracking the bottom.
Sonar Setup Tab of the Main Menu
Fish Symbols—select how the Sonar page displays underwater
targets and background information. If you select Off, the unit
displays all of the available information about the underwater
environment. If you select a fish symbol, the Sonar page displays
only the information related to that symbol.
Water Type—select the proper water type you are boating in. Since
sound waves travel through Fresh and Salt water at different rates, it
is necessary to select the Water Type to ensure accurate readings on
the unit.
96
Map Split Sonar Detail—select how much detail is displayed on
the Map page with the sonar displayed. Full Range shows data
using the Range setting of the Sonar page, regardless of Zoom or
Bottom Lock. Maximum Detail shows any Zoom or Bottom Lock
data from the Sonar page.
Keel Offset—enter the surface reading for the depth of a keel. This
makes it possible to measure depth from the bottom of your keel
instead of from the transducer’s location. Enter a positive number
to offset for a keel. It is also possible to enter a negative number to
compensate for a large vessel that may draw several feet of water.
The Keel Offset is reflected in the depth reading.
Transducer—select the type of transducer that you are using. If you
are using a speed-capable transducer/sensor, select Temp, Spd.
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > SETTING UP THE SONAR
Calibrating the Water Speed
If you select Temp, Spd for the Transducer option on the Sonar
Setup tab, you also need to calibrate the water speed to ensure that
the Water Speed displayed on your unit is accurate. The calibration
should take place in water having little or no current.
The unit automatically uses the GPS ground speed, if it is available,
for comparison on the calibration. If a GPS ground speed is not
available, use either your boat’s speedometer reading (not always
accurate) or a stopwatch to determine your speed over a certain
distance. To find out your speed, divide the distance by the time.
To calibrate the water speed:
1. From the Sonar Setup tab, use the Rocker key to highlight
Calibrate Water Speed and press ENTER.
2. Bring the boat to a cruising speed. Both the top ground and
uncalibrated water speeds is shown at the bottom of the
calibration window. Note your top speed, then stop the boat
and press ENTER.
GPSMAP 276C Owner’s Manual
Calibrating the Water Speed
3. By default, the top ground speed is automatically shown. If
a ground speed is not available, the top uncalibrated water
speed is used instead. If the new speed is correct, highlight
OK and press ENTER.
If you wish to manually enter a calibration, press ENTER
while the speed is highlighted, enter a new speed, and press
ENTER.
If the boat is not moving fast enough or the speed sensor is not
outputting a speed, “Boat Is Not Moving Fast Enough To Calibrate”
displays at the bottom of the screen. Check that the speed sensor
wheel is moving or safely increase boat speed. If there is a problem
with the speed sensor or if a speed senor is not installed, “Water
Speed Sensor Is Not Working” appears at the bottom of the display.
Check connections of speed sensor cables.
97
SETTING UP AND USING SONAR > SETTING UP THE SONAR
Setting up the Sonar Display
You can set up how the sonar information is displayed on the screen.
Press MENU two times to open the Main Menu. Select Setup from
the vertical row of tabs on the left, then select Sonar Display from
the row of tabs along the top of the screen.
Flasher—select On to display a graphic Flasher representation on
the far right side of the sonar display. This graphic Flasher displays
structure and bottom returns much the same as a true Flasher. You
may find this feature particularly useful when using Fish Symbols.
Temperature Graph—select On to display a temperature graph
along the bottom of the Sonar page.
Background Color—select the color for the Sonar page and the
sonar on the Map split.
Graphic Flasher
Sonar Display Setup Tab
Scale—select how and where you want the depth scale to be
displayed.
Color Bar—select On to show a gradient scale of the current Target
Level setting on the Sonar Setup tab.
98
White
Background
Color Bar
Temperature
Graph
Depth Scale
in corners
Sonar Page with the Sonar Display settings changed
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
Understanding Sonar
The transducer mounted on your vessel transmits sound waves
toward the bottom of the water in a cone-shaped pattern. When
a transmitted sound wave strikes an underwater object—such as
the bottom, a structure, or a fish—sound is reflected back to the
transducer. The transducer collects the reflected sound waves and
sends the data to the GSD 20 Sounder Module and then to the
GPSMAP 276C to be processed and displayed. The underwater data
is shown on the Sonar display in the order that it is returned; first
returned is the first on the display.
Understanding the Sonar Display
One of the first things to understand about sonar is that the
transducer sends a beam down to the bottom of the water, much like
the beam of a flashlight. The beam starts small near your vessel and
expands as it gets to the bottom. Refer to “Transducer Coverage” for
more detailed information.
The Sonar page does not display a three-dimensional representation
of the underwater environment; the display is in two-dimensions,
much like if you took a picture of an aquarium. Only the depth of
the item in the water is displayed. The Sonar display does not show
you where an item is located horizontally in the water, as shown in
the drawings below. The fish is not directly above the tree in reality,
but it may look like it is on the Sonar page.
Fish
Sonar Page
Generally speaking, if the only thing between the transducer and
the bottom is water, the first strong return comes from the bottom
directly below the transducer and sets the bottom level. Weaker
secondary returns provide the detailed data. Stronger returns display
in darker colors, with red being the strongest return.
GPSMAP 276C Owner’s Manual
1'
10'
Tree
Tree
20'
Aerial View of the Water
Sonar Display
99
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
Transducer Coverage
The area covered by the transmitted sound waves is determined
by the cone angle of the transducer and the water depth. The wide
Coverage
cone angles (40°) associated with low frequencies (50 kHz) provide Diameter
a large coverage area for finding fish within a coverage width that
is approximately 2/3 of the water depth. However, this also means
that wide cone angles produce less bottom detail and resolution. As
shown in the drawing on the near right, the 40° cone angle produces
a coverage area of approximately a 20-foot diameter circle at a 30foot depth.
The narrow cone angles (10°) associated with high frequencies (200
kHz) provide better bottom resolution and crisper detail, but cannot
show a large coverage area for finding fish. The 10° cone angle
provides a coverage width that is approximately 2/10 of the water
depth. As shown in the drawing on the far right, the 10° cone angle
produces a coverage area of approximately a 6-foot diameter circle
at a 30-foot depth.
Depth
40° Cone Angle (50 kHz)
Coverage
Diameter
Depth
10° Cone Angle (200 kHz)
Dual frequency mode combines both frequencies to get the best
coverage area and contour/depth readings.
100
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
Whiteline
The GSD 20 Sounder Module can help you determine whether the
bottom is hard or soft. When the sonar sound waves are reflected
back by the bottom, a hard bottom returns a stronger signal than a
soft bottom. A thin whiteline indicates a softer bottom, while a thick
whiteline indicates a harder bottom. Normally, a red line is used
to show the point where water meets the bottom. This line follows
the bottom contour, along with any significant objects lying on the
bottom. The unit uses the whiteline function to make the bottom
layer information easier to distinguish.
Thermoclines
A rough definition of a thermocline is a break in water where
the water temperature changes faster than the water above it.
Thermoclines are shown as the weakest colors.
One of the unique features offered by Garmin is See-Thru®
technology, which allows the GPSMAP 276C to hear both weak and
strong signals simultaneously so it can identify fish returns under
the toughest conditions, such as suspended in thermoclines or even
hiding near structures. See-Thru technology allows the GSD 20
Sounder Module to “see” through thermoclines and helps locate fish
where they live—and fish love thermoclines!
Thick
Whiteline:
Hard bottom
Whiteline On
GPSMAP 276C Owner’s Manual
Whiteline Off
Thermocline
101
APPENDIX > SPECIFICATIONS
APPENDIX
Specifications
Performance
Receiver:
Acquisition Times:
Physical Specifications
Size:
Weight:
Display:
Case:
Temp. Range:
Power
Battery:
Battery Life:
Source:
Fuse:
102
5.7” W x 3.2” H x 1.9” D
(14.5 x 8.1 x 4.8 cm)
13.6 oz (0.39 kg)
3.75” diagonal (9.5 cm) Transflective, 256-color
display with backlighting (480 x 320 pixels)
Fully gasketed, high-impact plastic alloy,
waterproof to IEC 60529 IPX7
5°F to 140°F (-15°C to 60°C)
Update Rate:
Accuracy
GPS:
DGPS (USCG):
DGPS (WAAS):
Velocity:
Dynamics:
Differential-ready 12 parallel channel receiver
Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (First Time/AutoLocate™)
1/second, continuous
15 meters (49 feet) RMS 95% typical
3–5 meters (10–16 ft), 95% typical
< 3 meters (10 ft) 95% typical with DGPS
corrections
0.1 knot RMS steady state
6 g's
Rechargeable lithium-ion
5 to 15 hours depending upon the backlight
setting
11–35 VDC
3AG - 1.5 Amp
GPSMAP 276C Owner’s Manual
APPENDIX > OPTIONAL ACCESSORIES
Optional Accessories
In addition to the standard accessories included with your GPSMAP
276C, several optional accessories are available to enhance the
operation of the GPSMAP 276C.
To obtain replacement parts and optional accessories, contact
your Garmin Dealer, Garmin Product Support in the U.S.A. at
800/800.1020, or Garmin Europe at 44/0870.8501241.
WARNING: Garmin accessories have been designed and
specifically tested for use with Garmin products. Accessories
offered by other manufacturers have not been tested or approved
for use with Garmin products. Use of such accessories could
cause damage to the GPSMAP 276C and void the warranty.
PC Interface Cable: Connects the unit to a serial port on your PC.
Power/Data Cable: Allows you to connect the unit to the electrical
system using bare wires.
Programmable Data Cards: Blank data cards available in 8 MB,
16 MB, 32 MB, 64 MB, and 128 MB sizes. Download detailed
map data from MapSource CD-ROMs to a data card, either
directly through your GPSMAP 276C using the PC USB Cable, the
optional PC Interface Cable, or with the optional USB Data Card
Programmer.
USB Data Card Programmer: Programs blank data cards at high
speed through a PC.
Auto Navigation Kit: Provides the parts and map data to use the
GPSMAP 276C in an automobile.
Carrying Case: Protects the GPSMAP 276C when not in use; has
storage space for data cards.
GA 29, GA 29F, and GA 26C Antennas: Garmin remote antennas.
Protective Cover: Snaps on the front of the unit to protect the
screen from damage.
Non-Skid Friction Mount: Portable vehicle mount, no installation
required.
Permanent and Temporary Adhesive Disks: Adhesive disks for
using the unit in a vehicle.
External Speaker with 12/24-Volt Adapter Cable: Allows the unit
to operate from the vehicle’s power system through the cigarette
lighter adapter. Provides a speaker for vocal prompts.
GPSMAP 276C Owner’s Manual
MapSource Software CD-ROMs: Offers several detailed mapping
options that are compatible with the GPSMAP 276C, including City
Select, BlueChart, Fishing Hot Spots, and Topo.
Pre-Programmed Data Cards: Data cards pre-programmed with
either Garmin BlueChart or Fishing Hot Spots map data.
103
APPENDIX > INSTALLATION INFORMATION
Installation Information
This section of the Appendix provides information on connecting the
GPSMAP 276C to auxiliary devices and removing the antenna.
Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 276C to an 11–35
VDC system and provides interface capabilities for connecting
external devices. The color code in the diagram below and to the
right indicates the appropriate harness connections. Replacement
fuse is a 3AG - 1.5 Amp fuse.
Ground
Black
Alarm
White
Voice (+)
Brown
Data In
1 Yellow
Voice (-)
Orange
Data Out 1
Blue
Data In
2 Green
Power
Red
Data Out 2
Violet
Power/Data Connector on the GPSMAP 276C Unit
Power/Data Connector on the Cable
Red: Power
Black:
Ground
(-)
(+)
11–35 VDC
RXD +
Autopilot/
NMEA Device
Blue:
Data Out 1
RXD Switch
Yellow:
Data In 1
104
Ground
Black
Alarm
White
Voice (+)
Brown
Data In
1 Yellow
Voice (-)
Orange
Data Out 1
Blue
Data In
2 Green
Power
Red
Data Out 2
Violet
Closed - On,
Open - Off
(+)
White/Brown
Orange GSD 20
Sounder
(-)
White/Blue
GPSMAP 276C Owner’s Manual
APPENDIX > INSTALLATION INFORMATION
Connecting Your GPSMAP 276C to a Computer
Your GPSMAP 276C can be connected to your computer using the
supplied USB cable to connect to a USB data port or the optional PC
Interface Cable to connect to a DB-9 serial communications port.
NOTE: Fully install the supplied MapSource program, Trip &
Waypoint Manager, on your computer before connecting the USB
cable to the computer.
USB
connector
under
weather cap
USB Data Port
Serial Communications Port
GPSMAP 276C Owner’s Manual
To connect your GPS to your computer:
1. Connect the small end of your cable to the lower connector
on the back of the GPSMAP 276C, shown in the illustration
to the left.
2. When using the supplied USB Data Cable, connect the
larger end of the cable to an available USB data port (see
illustration on the left).
When using a PC Interface Cable, connect the larger end of
the cable to a serial communications port on your computer
(see illustration on the bottom left).
Information about USB Drivers
The USB drivers should have been automatically installed when you
installed the MapSource program that came with your GPSMAP
276C. When you initially connect the GPSMAP 276C to a USB
port, your computer may prompt you to locate the destination of
the drivers for the device. You only need to install the drivers once.
After the drivers are installed, your computer will always detect your
GPSMAP 276C when it is connected. USB drivers may be updated
periodically. You can find these updates at www.garmin.com.
105
APPENDIX > INSTALLATION INFORMATION
Using xImage for Customized Waypoint Icons
xImage allows you to exchange images between your PC and your
GPSMAP 276C. You can download and save screen shots of any
screen displayed on your unit. xImage also allows you to download
customizable splash screens and waypoint symbols from compatible
GPS units, customize them (if you have an image editing program
on your PC), and send them back to your GPS unit.
You can download xImage from the Garmin Web site at http://www.
garmin.com/ximage/. Refer to the help file for complete instructions
about using xImage.
Installing and Removing Data Cards
The GPSMAP 276C uses an optional Garmin data card to display
digital charts and maps or save user data. Install the data card in the
card slot located on the bottom of the unit. Install or remove the data
card at any time, whether the unit is on or off.
You can load a variety of information on your data card, such as
BlueChart and MapSource detailed maps, and waypoint, route, and
track information saved in a MapSource program. You can also buy
pre-programmed cards to use with your GPSMAP 276C.
To install a data card:
1. Insert the card into the slot on the bottom of the unit. Be sure
the label is facing the front of the unit.
2. Firmly push the card into the unit. It is not necessary to force
the card. The handle is still exposed when it is properly
inserted.
3. If the unit is on, a confirmation tone sounds. The first time
you insert a programmed data card, the unit takes a few
seconds to read the card. Once the data card has been
properly installed and accepted, a summary screen noting
the card details appears. Press ENTER to acknowledge.
If you insert a data card and get a card format not recognized
message, try removing the card and reinserting it. If the card is still
not recognized, contact Garmin or your Garmin dealer.
To remove a data card:
1. Grasp the card handle. The handle expands for easy
removal.
2. Pull the card out of the card slot on the bottom of the unit.
3. If the unit is on, a confirmation tone sounds when the data
card has been removed.
Data cards are not waterproof, should not be exposed to moisture or
excessive static charges, and should be stored in the case supplied
with the card.
106
GPSMAP 276C Owner’s Manual
APPENDIX > INSTALLATION INFORMATION
Interfacing
The following formats are supported for connection of external
devices: GARMIN proprietary Differential GPS (DGPS), NMEA
0180, 0182, 0183 (versions 1.5, 2.0, 2.3, 3.01), ASCII Text Output,
and RTCM SC-104 input (version 2.0).
The following are the Approved Sentences for NMEA 0183,
version 3.01 output: GPRMC, GPGGA, GPGSA, GPGSV, GPGLL,
GPBOD, GPRTE, and GPWPL. The following are the Proprietary
Sentences for NMEA 0183, version 3.01 output: PGRME, PGRMZ,
and PGRMM.
To remove the antenna:
1. Remove the external power cable from the connector on the
back of the GPSMAP 276C.
2. Rotate the antenna to approximately a seven o’clock
position. The alignment notches in the casing must line up
with the notches on the antenna.
3. Pull the antenna away from the GPSMAP 276C unit.
The GPSMAP 276C also includes NMEA input with support for the
BWC, DBT, DPT, MTW, VHW, VTG, and XTE sentences.
Garmin’s proprietary communication protocol is available from the
Web site (www.garmin.com).
Removing the Antenna
You can remove the antenna to use an external antenna. After the
antenna is removed, the BNC connector is exposed and ready for use
with an external antenna. For information on connecting an external
antenna to the GPSMAP 276C, refer to the installation instructions
that came with the antenna.
GPSMAP 276C Owner’s Manual
Removing the Antenna
107
APPENDIX > LEARNING ABOUT GPS
Learning about GPS
The Global Positioning System (GPS) is a satellite-based navigation
system made up of a network of 24 satellites placed into orbit by the
United States Department of Defense.
GPS was originally intended for military applications, but in the
1980s, the government made the system available for civilian use.
GPS works in any weather conditions, anywhere in the world, 24
hours a day. There are no subscription fees or setup charges to use
GPS. For more information refer to the Garmin Web site at www.
garmin.com and also read the GPS Guide for Beginners, which can
be found on the Web site at http://www.garmin.com/aboutGPS/
manual.html.
Common GPS Terms
Initialization—the first time a GPS receiver orients itself to its
current location and collects data. After the receiver is initialized, it
remembers its location and acquires a position more quickly.
Position—an exact, unique location based on geographic
coordinates (Latitude and Longitude).
Route—A group of waypoints entered into the GPS receiver in the
sequence you desire to navigate them.
108
Waypoint—a location you store in your GPS. It may be a
checkpoint on a route or a significant ground feature, such as your
campsite or favorite fishing spot.
What is Differential GPS (DGPS)?
The United States and Canadian governments (among others) have
set up Differential GPS (DGPS) stations to transmit correction
signals. They are operational in coastal areas and on many navigable
river systems.
The DGPS system is available for use without a fee, but you do need
additional equipment to receive DGPS signals; a beacon receiver
compatible with the RTCM format sentences supported by your
Garmin GPS is needed to use DGPS.
Refer to the United States Coast Guard’s Web site (http://www.
navcen.uscg.gov/) for locations and status of the differential stations.
Differential Field
Differential receiver status is indicated in the bottom left field of the
GPS page and will show one of the following conditions:
• None: No optional beacon receiver is attached or enabled in
the Com 1 or 2 tab of the Main Menu or WAAS is turned Off.
• Searching for WAAS: WAAS is enabled and the receiver is
searching for WAAS signal.
GPSMAP 276C Owner’s Manual
APPENDIX > LEARNING ABOUT GPS
• Using WAAS: WAAS capability is enabled and the unit is
receiving WAAS corrections.
• Check Beacon Wiring: The DGPS setting is enabled in the
Com 1 or 2 tab of the Main Menu but no DGPS device is
detected.
• No Beacon Signal: DGPS receiver is attached, but not
transmitting RTCM data to GPS.
• Tuning Beacon: The receiver is tuning manually to a DGPS
frequency.
• Using Differential: The unit is receiving DGPS corrections.
• Scanning for Beacon: The DGPS receiver is scanning for an
available frequency.
What is WAAS?
The Wide Area Augmentation System (WAAS) is an FAA-funded
project to improve the overall integrity of the GPS signal and
increase position accuracy for users in North America.
The system is made up of satellites and approximately twenty-five
ground reference stations positioned across the United States that
monitor GPS satellite data. Two master stations, located on either
coast, collect data from the reference stations and create a GPS data
correction message.
GPSMAP 276C Owner’s Manual
According to the FAA’s Web site, testing in September 2002 of
WAAS confirmed an accuracy performance of 1–2 meters horizontal
and 2–3 meters vertical throughout the majority of the continental
United States and portions of Alaska.
WAAS is just one service provider that adheres to the MOPS
(Minimum Operational Performance Standard) for global Satellite
Based Augmentation Systems (SBAS). Eventually, there will
be several services of worldwide geostationary communication
satellites and ground reference stations.
All SBAS systems use the same receiver frequency; therefore, any
operational SBAS system should be capable of providing your GPS
unit with increased accuracy at any location in the world.
Currently, enabling WAAS on your Garmin GPSMAP 276C in
regions that are not supported by ground stations may not improve
accuracy, even when receiving signals from an SBAS satellite. In
fact it can degrade the accuracy to less than that provided by GPS
satellites alone. For this reason, when you enable WAAS on your
Garmin GPS receiver, the receiver automatically uses the method
that achieves the best accuracy. To enable WAAS, refer to page 6.
For more information, go to http://gps.faa.gov/Programs/WAAS/
waas.htm.
109
APPENDIX > LORAN TD SETUP
LORAN TD Setup
LORAN C is a radio navigation aid operated and maintained in the
United States by the United States Coast Guard. The name LORAN
is an acronym for “LOng RAnge Navigation.” The LORAN
system covers the entire United States and the United States
Coastal Confluence Zone. From the perspective of a mariner, the
system is used for ocean and coastal navigation. It can be used as a
supplemental system for harbor and harbor approach navigation, and
it is used for inland navigation by recreational vehicles.
LORAN TD Feature
The LORAN TD (Time Delay) feature eases the transition from
using LORAN to using GPS. The GPSMAP unit automatically
converts GPS coordinates to LORAN TDs for those who have a
collection of LORAN fixes for favorite fishing spots and other
waypoints recorded as TDs. You can display your position as a TD
or enter waypoints as TDs. The accuracy to be expected from this
conversion is approximately thirty (30) meters. When the unit is
placed in the LORAN TD format mode, it simulates the operation of
a LORAN receiver. Position coordinates may be displayed as TDs,
and all navigation functions may be used as if the unit was actually
receiving LORAN signals.
110
Using the LORAN TD Format
When creating new waypoints using LORAN TD coordinates, you
must set the correct LORAN chain number and secondary stations in
the Setup TD field before storing the waypoint. After the waypoint
is stored in unit memory, it will always reference the LORAN chain
number and secondary stations currently selected in the Setup TD
field. If you enter a different LORAN chain number or change
the secondary stations or offsets in the Setup TD field, the active
waypoint information will reflect those changes. Since the GPSMAP
276C does not rely on the LORAN signal for navigation, it can
reference a different GRI chain and/or secondary stations and still
navigate to the location stored in memory.
The LORAN Position Format field is located under the Units tab in
the Main Menu. The LORAN TD Setup window contains the fields
to select the Loran GRI-Chain Number, Primary and Secondary
Stations, and TD Offsets.
GPSMAP 276C Owner’s Manual
APPENDIX > LORAN TD SETUP
To set up Loran TD from the Main Menu:
1. Press MENU twice to display the Main Menu.
2. Use the Rocker key to highlight Setup on the vertical tab list.
Then select Location from the row of horizontal tabs.
2. Using the Rocker key, highlight the Location Format field
and press ENTER.
LORAN TD Setup
6. When done, highlight the Save button and press ENTER.
Location Tab of the Setup Tab
3. Highlight Loran TD press ENTER.
4. Highlight the Setup button located on the right side of the
Location Format field and press ENTER. The Loran TD
Setup window appears.
5. To change the settings of any of the five fields, highlight
the field, press ENTER, enter the desired setting using the
Rocker key, then press ENTER.
GPSMAP 276C Owner’s Manual
If the active GRI Chain, secondary stations, or offsets have been
changed since the waypoint was created, the waypoint will now
reference the active GRI chain and secondary stations and adjust the
TD coordinates accordingly. Remember that the GPS is not relying
on the LORAN signal for navigation and actually converts the
TD coordinate to a useful latitude and longitude coordinate before
storing the waypoint to memory or using it for navigation. Because
of this, the unit can navigate to a TD coordinate anywhere in the
world.
You must know your GRI chain number and secondary stations
to create a LORAN TD position. For more information, read our
LORAN TD Position Format Handbook, available at the Garmin
Web site, at www.garmin.com/support/userManual.html.
111
APPENDIX > MAP DATUMS AND LOCATION FORMATS
Map Datums and Location Formats
What is a Location Format and which should I
use?
Your current location can be viewed on the GPS in the form of
coordinates. Since different maps and charts use different location
formats, Garmin GPS units allow you to choose the correct
coordinate system for the type of map you are using. The most
common format is latitude and longitude, which is utilized by all
Garmin units.
Map Datums are based on a mathematical model of the Earth.
What are a Map Datum and which should I use?
A datum is a mathematical model of the Earth that approximates
the shape of the Earth and enables calculations to be carried out in a
consistent and accurate manner. The datum is physically represented
by a framework of ground monuments whose positions have been
accurately measured and calculated on this reference surface. Lines
of latitude and longitude on a map or chart are referenced to a
specific map datum. Every chart has a map datum reference, and you
can set the GPSMAP 276C to match most of those commonly used.
You may choose to change the location format to use with other
coordinate systems in Location field of the Location Setup tab.
UTM/UPS (Universal Transverse Mercator/Universal Polar
Stereographic) are easy-to-use metric grids that are found on most
USGS topographic quadrangle maps. You can also select one of
several other grids, including a user-definable grid (for the advanced
user).
For more information about using paper maps with your Garmin
unit, refer to Using a Garmin GPS with Paper Land Maps, available
for download at http://www.garmin.com/manuals/UsingaGarminGP
SwithPaperLandMaps_Manual.pdf.
If you are navigating and comparing the GPS coordinates to a map,
chart, or other reference, set the map datum in the GPS unit to the
same datum as the map to ensure the most accurate navigation.
112
GPSMAP 276C Owner’s Manual
APPENDIX > DIGITAL SELECTIVE CALLING (DSC)
Digital Selective Calling (DSC)
Digital Selective Calling (DSC) uses marine VHF radio and Global
Positioning System (GPS) technologies to transmit and receive
location information. DSC is used by mariners to assist them in two
major areas: Distress Calls and Position Reporting.
A non-emergency DSC Position Report allows mariners to exchange
and display their positions. When you receive a DSC position,
you can create a waypoint or to show the received position on an
electronic map.
An emergency DSC Distress Call allows a vessel in trouble
to transmit a substantial amount of information in a single
transmission, or “call,” without the need for voice communication.
When any nearby rescuer receives the DSC signal, an alarm sounds,
and they immediately receive the position of the caller.
use DSC, users must first register their VHF radio with the FCC and
receive a Maritime Mobile Service Identity (MMSI) number.
What is a Maritime Mobile Service Identity (MMSI)
number?
Maritime Mobile Service Identity (MMSI) basically allows a VHF
radio to act like a phone. The 9-digit MMSI number acts like a
phone number when used in a Position Report and as a unique
identifier to the Coast Guard when used in an emergency Distress
Call. To obtain a Maritime Mobile Service Identity (MMSI) number,
users must register their VHF radio with the FCC (Form 605).
Garmin does not supply this number!
For more information regarding MMSI numbers, visit http://www.
navcen.uscg.gov/marcomms/gmdss/mmsi.htm.
The rescuer may then choose to navigate (Go To) the caller’s
position to assist or forward the call on to the Coast Guard. When
the Coast Guard receives the call, they can immediately access the
caller’s information (such as who they are and the type of vessel) in
their database while they are in transit to the caller’s position.
Any time a vessel receives a DSC call, they can store that location
and quickly navigate to that position using a Go To. This makes
DSC a time-saver, especially in an emergency situation. In order to
GPSMAP 276C Owner’s Manual
113
APPENDIX > DIGITAL SELECTIVE CALLING (DSC)
How are MMSI assignments obtained?
Non-commercial users, such as recreational users, who remain
in United States waters and only carry VHF, EPIRB (Emergency
Position Indicating Radio Beacons), and Radar are not required to
have a FCC ship station license. The FCC and Coast Guard have
authorized some second and third party vendors to assign MMSI
numbers. This service is limited to registering recreational vessels
only. To receive information on how to obtain a recreational MMSI
number, contact http://www.uscg.mil/rescue21/links/mmsi.htm or
http://wireless.fcc.gov/marine/.
Non-Federal Users in the United States
Commercial users, or those who travel outside the United States or
Canada, must apply for a ship station license or an amendment to a
ship station license. To find out if you require a Ship Station license,
contact http://wireless.fcc.gov/marine/fctsht14.html. If your vessel
requires licensing by the FCC, you will obtain a MMSI during the
application/licensing process when you file FCC Forms 159 and
605.
Federal Users in the United States
Federal users can obtain MMSI assignments from their agency
radio spectrum management office. These procedures are currently
under review by the National Telecommunications and Information
Administration (NTIA).
114
Users Outside the United States
Users can obtain an MMSI assignment from their telecommunications
authority or ship registry, often by obtaining or amending their ship
station license.
Users In Canada
Industry Canada is responsible for assigning MMSI numbers to
commercial and recreational vessels. Information is available at the
following Web site: http://apollo.ic.gc.ca/english/mmsi.html.
How can Garmin help you with DSC?
To receive Distress Calls or Position Reports, you must have a DSCequipped chartplotter as well as a VHF radio with DSC support.
During normal, non-emergency Position Report communication,
Channel 70 (156.525 MHz) has been set aside as the VHF/DSC
digital call channel.
For a Distress Call, press the MayDay button on the VHF radio.
The call transmits on an emergency channel with the MMSI number
attached to the call, if the receiver has DSC support. Any DSCequipped mariner (on sea or land) within range can receive the call.
When the GPSMAP 276C is connected to a VHF with DSC support,
the GPS unit displays a Call List, Log, and a Directory. Basic wiring
is required for the Garmin unit and VHF radio to send and receive
NMEA data from each other.
GPSMAP 276C Owner’s Manual
APPENDIX > MESSAGES
Messages
Approaching Turn: You are nearing a turn in a route.
Arriving at Destination: You are nearing your destination.
Batteries Low: The battery needs to be recharged.
Can’t Unlock Maps: No applicable unlock code for one or more maps was
found. All MapSource maps are not accessible.
Database Error: Internal problem with the unit. Contact your dealer or Garmin
Product Support to have the unit repaired.
Deep Water: The water is deeper than the amount set in the Deep Water Alarm.
Dragging Anchor: The distance set in the Anchor Drag Alarm is exceeded.
Lost Satellite Reception: The unit is unable to receive satellite signals.
Memory Full: Unit memory is full, no further data can be saved.
Near Proximity Point: You have reached the distance set for a proximity
waypoint.
No Diff GPS Location: RTCM is selected but the unit is not receiving DGPS
data.
None Found: No data matched the search criteria.
No Tide Stations for that Area: No tide stations within 100 miles of the area.
Route Memory Full: No additional routes can be saved.
Route Truncated: Uploaded route from another device has more than 50
waypoints.
Route Waypoint Memory Full: No additional route waypoints can be saved.
Shallow Water: The water is shallower than the amount set in the Shallow
Water Alarm.
Track Already Exists: A saved track with the same name already exists.
Track Log Full: The track log is full and track recording has been turned off.
In order to record more track points, you will need to clear the track log and
turn track recording on.
Track Memory Full: No more track data can be stored. Delete the old track
data to store the new data.
Track Truncated: A complete uploaded track will not fit in memory. The
oldest track log points have been deleted.
Transfer Complete: Data transfer has been completed.
Waypoint Already Exists: A waypoint with the same name already exists.
Waypoint Memory Full: The unit has stored the maximum number of
waypoints.
Off Course: You are off course by the distance set in the Off Course Alarm.
Proximity Memory Full: No additional proximity waypoints can be saved.
Proximity Radius Overlaps: The radius of two proximity waypoints overlap.
Route Already Exists: You have entered a route name that already exists.
GPSMAP 276C Owner’s Manual
115
APPENDIX > DATA FIELD OPTIONS
Data Field Options
The following list provides a brief description of each data field
option. Some of these options are supported only by devices
interfaced to your GPSMAP 276C.
Accuracy: The current accuracy of your GPS determined location.
Battery Timer: The time remaining on the battery before it is fully discharged.
Bearing: The compass direction from your current location to a destination.
Course: The desired path of travel from your starting location to a destination.
ETE (Next): Estimated Time Enroute. The estimated time required to reach the
next point on your route.
Elevation: The altitude (height) above or below mean sea level (MSL).
GPS Status: The current status of the GPS receiver, such as “3D GPS.”
Location (Lat/Lon): Your current location as latitude/longitude coordinates.
Location (Selected): Your current location described in the selected units of
measure (other than lat/lon).
Max Speed: The maximum speed the unit has moved since last reset.
Mov Avg Spd: See Trip Avg. Speed (Moving) on the next page.
Course to Steer: The recommended direction to steer in order to reduce crosstrack error and return to the course line. Displayed as Steer.
Move Timer: See Trip Timer (Moving) on the next page.
Cross Track: The distance you are off a desired course in either direction, left
or right.
Next Course: The remaining distance of the route.
Next Turn: The remaining distance to the next waypoint on the route.
Depth: (Marine Only) The depth of water from sonar NMEA input.
Next Wpt: See Waypoint (Next) on the next page.
Dest Wpt: See Waypoint (Destination) on the next page.
Odometer: The total distance traveled since the Odometer was reset.
Distance (Destination): The entire distance, from beginning to end, of a route.
Pointer: The arrow indicating the direction to travel to the next point on a
route.
Distance (Next): The distance to the next point on a route.
ETA (Destination): Estimated Time of Arrival. The estimated time you will
reach your destination.
ETA (Next): Estimated Time of Arrival. The estimated time you will reach the
next point on your route.
ETE (Destination): Estimated Time Enroute. The estimated time required to
reach your destination.
116
Power: The power indicator icon: Battery, External Power, or Charging.
Speed: Your current vehicle speed can be measured in miles per hour,
kilometers per hour, or knots.
Steer: See Course to Steer on the previous page.
Sunrise: The time at which the sun rises on this day.
Sunset: The time at which the sun sets on this day.
GPSMAP 276C Owner’s Manual
APPENDIX > DATA FIELD OPTIONS
Time: The current time and date. It can be displayed in 12-hour or 24-hour
format in local time or universal (UTC) time.
Water Temperature: (Marine Only) The temperature of water at a measured
depth using measurement devices interfaced to the unit.
Time to VNAV: See Est. Time to VNAV on the previous page.
Waypoint (Destination): The last point on a route, your destination. Displayed
as Dest Wpt.
Track: The direction of movement relative to a ground position. Also referred
to as ground track.
Waypoint (Next): The next waypoint in your route. Displayed as Next Wpt.
Trip Avg. Speed (Moving): The average speed while moving since the last
reset of the Trip Computer. Displayed as Mov Avg Spd.
Trip Avg. Speed (Total): The total average speed traveled since the last reset of
the Trip Computer. Displayed as Ttl Avg Spd.
Trip Odometer: The total distance traveled since the Trip Computer was reset.
Trip Timer (Moving): The length of time your vehicle has been in motion,
since the Trip Computer was reset. Displayed as Move Timer.
Trip Timer (Total): The total time the unit has been tracking since the Trip
Computer was reset.
Ttl Avg Spd: See Trip Avg. Speed (Total).
Turn: The direction of, and distance to, the next turn on an active route.
User Timer: The timer you set in the Main Menu.
Velocity Made Good: The rate of closure on a destination based upon your
current speed and course of travel. Displayed as VMG.
Vertical Speed: The rate of climb or descent.
Voltage: The direct current voltage level of an external power source.
Water Speed: (Marine Only) The data acquired from measurement devices
interfaced to the unit is used to calculate your current speed over water.
GPSMAP 276C Owner’s Manual
117
APPENDIX > SAFETY AND PRODUCT INFORMATION
Safety and Product Information
Product Registration
Software License Agreement
Use this area to record the serial number (8-digit number located
on the back of the box) in case your GPSMAP 276C is lost, stolen,
or needs service. Keep your original sales receipt in a safe place or
attach a photocopy inside the manual.
Garmin grants you a limited license to use the software embedded in this
device (the “Software”) in binary executable form in the normal operation of
the product. Title, ownership rights, and intellectual property rights in and to
the Software remain with Garmin.
Serial Number: ___ ___ ___ ___ ___ ___ ___ ___
This section of the Appendix contains information about your
license agreement and warranty, as well as compliance information.
Read the Safety Information to learn how to properly and safely
operate the GPSMAP 276C.
BY USING THE GPSMAP 276C, YOU AGREE TO BE BOUND BY THE
TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE
AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY.
You acknowledge that the Software is the property of Garmin and is protected
under the United States of America copyright laws and international copyright
treaties. You further acknowledge that the structure, organization, and code
of the Software are valuable trade secrets of Garmin and that the Software in
source code form remains a valuable trade secret of Garmin. You agree not
to decompile, disassemble, modify, reverse assemble, reverse engineer, or
reduce to human readable form the Software or any part thereof or create any
derivative works based on the Software. You agree not to export or re-export
the Software to any country in violation of the export control laws of the
United States of America.
118
Help us better support you by completing our online registration
today! Have the serial number of your GPSMAP 276C handy and
connect to our Web site (www.garmin.com). Look for the Product
Registration link on our Home page.
Contact Garmin
If you should encounter any difficulty while using your GPS unit,
or if you have any questions, in the U.S.A. contact Garmin Product
Support by phone: 913/397.8200 or 800/800.1020, Monday–Friday,
8 AM–5 PM Central Time; or by e-mail at sales@garmin.com. In
Europe, contact Garmin (Europe) Ltd. at 44/0870.8501241.
GPSMAP 276C Owner’s Manual
APPENDIX > SAFETY AND PRODUCT INFORMATION
Limited Warranty
This Garmin product is warranted to be free from defects in materials or
workmanship for one year from the date of purchase. Within this period,
Garmin will at its sole option repair or replace any components that fail in
normal use. Such repairs or replacement will be made at no charge to the
customer for parts or labor, provided that the customer shall be responsible for
any transportation cost. This warranty does not cover failures due to abuse,
misuse, accident, or unauthorized alteration or repairs.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS
OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISING
UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY
VARY FROM STATE TO STATE.
IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL,
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER
RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS
PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not
allow the exclusion of incidental or consequential damages, so the above
limitations may not apply to you.
Garmin retains the exclusive right to repair or replace the unit or software or
offer a full refund of the purchase price at its sole discretion. SUCH REMEDY
SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH
OF WARRANTY.
GPSMAP 276C Owner’s Manual
Products sold through online auctions are not eligible for rebates or other
special offers from Garmin. Online auction confirmations are not accepted
for warranty verification. To obtain warranty service, an original or copy of
the sales receipt from the original retailer is required. Garmin will not replace
missing components from any package purchased through an online auction.
To obtain warranty service, contact your local Garmin authorized dealer or
call Garmin Product Support for shipping instructions and an RMA tracking
number. The unit should be securely packed with the tracking number clearly
written on the outside of the package. The unit should then be sent, freight
charges prepaid, to any Garmin warranty service station. A copy of the original
sales receipt is required as the proof of purchase for warranty repairs.
Garmin International, Inc.
1200 E 151st Street, Olathe, Kansas 66062 U.S.A.
Tel. 913/397.8200
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
The Garmin GPSMAP 276C has no user-serviceable parts. Should you ever
encounter a problem with your unit, take it to an authorized Garmin dealer for
repairs.
The GPSMAP 276C is fastened shut with screws. Any attempt to open the case
to change or modify the unit in any way will void your warranty and may result
in permanent damage to the equipment.
119
APPENDIX > SAFETY AND PRODUCT INFORMATION
FCC Compliance
The GPSMAP 276C complies with Part 15 of the FCC interference limits
for Class B digital devices FOR HOME OR OFFICE USE. These limits are
designed to provide more reasonable protection against harmful interference in
a residential installation, and are more stringent than “outdoor” requirements.
Operation of this device is subject to the following conditions: (1) This
device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired
operation.
This equipment generates, uses, and can radiate radio frequency energy and
may cause harmful interference to radio communications if not installed and
used in accordance with the instructions. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
The GPSMAP 276C does not contain any user-serviceable parts. Repairs
should only be made by an authorized Garmin service center. Unauthorized
repairs or modifications could result in permanent damage to the equipment
and void your warranty and your authority to operate this device under Part 15
regulations.
120
Safety Information
WARNING: The GPSMAP 276C contains a lithium-ion
rechargeable battery. The battery used in this device 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.
WARNING: If original battery must be removed for replacement,
dispose of used battery properly. Contact your local waste disposal
department for information on proper disposal of lithium-ion
batteries. Keep used battery away from children. Do not disassemble
and do not dispose of in fire.
WARNING: Only replace with Garmin Lithium-Ion Battery Pack
(Garmin Part Number 010-10517-00). Use of another battery may
present a risk of fire or explosion.
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, refer to our Web site
at http://www.garmin.com/prop65.
GPSMAP 276C Owner’s Manual
APPENDIX > SAFETY AND PRODUCT INFORMATION
CAUTION: Use the GPSMAP 276C at your own risk. To reduce
the risk of unsafe operation, carefully review and understand all
aspects of this Owner’s Manual—and thoroughly practice operation
using Simulator Mode prior to actual use. When in actual use,
carefully compare indications from the GPSMAP 276C to all
available navigation sources, including information from other
NAVAIDs, visual sightings, charts, etc. For safety, always resolve
any discrepancies before continuing navigation.
CAUTION: IT IS THE USER’S RESPONSIBILITY TO USE
THIS PRODUCT PRUDENTLY. THIS PRODUCT IS INTENDED
TO BE USED ONLY AS A NAVIGATIONAL AID AND MUST
NOT BE USED FOR ANY PURPOSE REQUIRING PRECISE
MEASUREMENT OF DIRECTION, DISTANCE, LOCATION,
OR TOPOGRAPHY. THIS PRODUCT SHOULD NOT BE USED
TO DETERMINE GROUND PROXIMITY FOR AIRCRAFT
NAVIGATION.
WARNING: The Global Positioning System (GPS) is operated by
the United States government, which is solely responsible for its
accuracy and maintenance. The system is subject to changes which
could affect the accuracy and performance of all GPS equipment.
Although the Garmin GPSMAP 276C is a precision electronic
NAVigation AID (NAVAID), any NAVAID can be misused or
misinterpreted, and therefore become unsafe.
MAP DATA INFORMATION: One of the goals of Garmin
is to provide customers with the most complete and accurate
cartography available, at a reasonable cost. We use a combination
of governmental and private data sources, which we identify as
required in product literature and copyright messages displayed.
Virtually all data sources contain inaccurate or incomplete data to
some degree. This is particularly true outside the United States,
where complete and accurate digital data is either not available or
prohibitively expensive.
CAUTION: The electronic chart is an aid to navigation and is
designed to facilitate the use of authorized government charts,
not replace them. Only official government charts and notices to
mariners contain all information needed for save navigation—and,
as always, the user is responsible for their prudent use.
GPSMAP 276C Owner’s Manual
121
APPENDIX > SAFETY AND PRODUCT INFORMATION
Because the Garmin GPSMAP 276C can be used for vehicular
navigation, important safety considerations must be followed. Read
and observe the following instructions.
WARNING: For use in vehicles, it is the sole responsibility of the
owner/operator of a vehicle to place and secure the GPSMAP 276C
so it will not interfere with the vehicle operating controls and safety
devices, obstruct the driver’s view of driving conditions, or cause or
personal injury in the event of an accident.
Do not mount the unit over airbag panels or in the field of airbag
deployment. Airbags expand with a rapid force that can propel
objects in their path towards the driver or passengers, causing
possible injury. Refer to airbag safety precautions in the vehicle
owner’s manual.
Do not mount the unit in a place where the driver or passengers are
likely to impact it in a collision. The mounting hardware provided
by Garmin is not warranted against collision damage or the
consequences thereof.
122
Do Not Mount
Where Driver’s
Field of Vision is
Blocked
Do Not Place
Unsecured on the
Vehicle Dash
Do Not Mount in Front of an Airbag Field of Deployment
WARNING: When used in vehicles, it is the sole responsibility
of the driver of the vehicle to operate the vehicle in a safe manner,
maintain full surveillance of all driving conditions at all times,
and not become distracted by the unit to the exclusion of safe
driving practices. It is unsafe to operate the controls of the unit
while you are driving. The driver of a vehicle equipped with a
GPSMAP 276C must pay full attention to operation of the vehicle
and road conditions while the vehicle is in motion. Failure to pay
full attention could result in an accident with property damage and
personal injury.
GPSMAP 276C Owner’s Manual
INDEX
INDEX
A
Accessories 103
Accuracy Alarm 69
Acquiring Satellites 5
Activate
go to 16
route 24
simulator 11
Active Route Page 42, 52, 58
options menu 52
Active Track Tab 37, 40
AC Outlet 2
Add to Route 21, 24, 26, 30, 63
Advanced NMEA Output Setup 90
Alarms 68, 81
anchor drag 69
arrival 69
DSC 54, 57
navigation 68
next turn 68
off course 69
persistent 68
proximity 36
sonar 69
system 69
Alerts. See Alarms
Anchor Drag 69
GPSMAP 276C Owner’s Manual
Antenna 1, 3, 107
Append to Route 30
Arrival Alarm 69
Arrow Key 7
Ask Me My Preference 85
Assign Category 33
Attention Tone 81
AutoLocate 3, 5
Auto Arrange 20
Average Location 30
Avoidance Button 86
Avoids 62, 86
B
Backlight 3, 80
Basic Operation 14, 58
Battery
level 4
pack 1, 2
saver mode 82
Beeper 81
BlueChart 106
Bug Indicator 48
C
Cable 104
Calculation Method 85
Calendar 70
Calibrate Water Speed 97
Cards, Data 106
Care Information vi
Carpool Lanes 86
Categories
Find Menu 18
Waypoint 33, 34
CDI. See Course Deviation Indicator
Celestial Tab 71
hunt & fish tab 74
sun & moon tab 73
tide tab 71
Chain Number 110
Charging 2, 4
Check Beacon Wiring 109
Cigarette Lighter Adapter 2
Cities 18
Cleaning vi
Clear
Track Log 38
Clock Alarm 69
Color Mode 80
Compass Page 48, 49, 80
options menu 48
COM 1 and COM 2 Tabs 88
Connecting the Power Cable 2, 104
Contact Garmin 118
Count Down or Up 83
Course Pointer 48
Create
category 33
route 21, 22
waypoints 26, 27
Current Route Page 64
Custom Avoids 62, 86
D
Data Card 44, 106
information 20, 79
slot 1
Data Fields
changing 78
options 116
Date 83
Daylight Saving Time 83
Day View 70
DB-9 105
Deactivate 52
Declutter 46
Deep Water 69
Defaults 8, 84
Delete
category 34
DSC Call 55
DSC directory item 56
route 25
track log 38
waypoint 34, 35
Depth 84
Detailed Maps 44
Detour 63
DGPS 88, 89, 108
123
INDEX
alarm 69
Differential 108, 109
Digital Selective Calling. See DSC
Direction Display 84
Display Tab 80
Distance and Speed 84
Distress Calls 54, 55, 56, 57, 113, 114
Drift 69
DSC 54–57, 113–114
E
Edit
route 23, 24
waypoints 32
Editing a Waypoint 32
Emergency 113
Entering Data 9, 10
ENTER Key 7
Erase Track Log 38
Exits 18
External Power Source 4
External Voltage
alarm 69
F
Faster Time 85
FCC 113, 114, 120
Features 8
Field 8
Find 18
124
from 18
from a different location 18, 19
key 7
menu 16, 20
Finding an Item 18–20
Find Current Location 3
Find Menu 18
Fishing 74
Fish Symbols 96
Flasher 98
Following an Automotive Route 64
Fuel Flow 25
G
Getting Started 1
Going to a Destination 15
Go To 32
distress call 56
history 19
point 15
position report 56
GPS
learning about 108
off/on 5
page 6
GRI Chain 111
GSD 20 91
GSD 20 Sounder Module 91
Guidance Tab 86
H
Heading 87
Highways
avoid 86
Highway Page 80
page layout 51
setup 51
Hunt & Fish Tab 74
I
Icons 80
Identifier 113
Information Page 20, 46
Initialize 3, 108
Interval 40
Invert 52
IN Key 7
Item Details 20
K
Keypad 7
L
Language 81, 82
Legs, Track 40
Limited Warranty 119
Lithium-ion Battery 1, 2, 120
Local Time 83
Location 6, 28
Location Format 87, 112
Log Filter 75
Longitude 116
LORAN TD Setup 110
Lost Satellite Reception 5
M
Magnetic Variation 87
Main Menu
alarms tab 68
celestial tab 71
display tab 80
GPS tab 4
message tab 75
sound tab 81
Man OverBoard 15, 17
MapSource 106
Map Card 44
Map Data Information 121
Map Datum 112
Map Orientation 43
Map Page 43
declutter 46
setup 78
Marine Timer 49
Maritime Mobile Service Identity.
See MMSI
Marking a Waypoint 9, 26, 27, 28, 31
underwater 95
MayDay 57, 114
Measuring Distance 47
GPSMAP 276C Owner’s Manual
INDEX
MENU Key 7
Messages 116
Message Tab 75
Military Time 83
Mils 84
MMSI 54, 113, 114
MOB 15, 17
MOB Key 7
Modes 14, 58, 82
Month View 70
Moon Information 73
Move around the Map 45
N
NAV/MOB 17
Navigate
route 15, 22
track 15, 17, 40
Navigation Alarms 68
NAV Key 7
Near
current route 19, 20
destination 19, 20
next 19, 20
other 19, 20
New
altitude 6
location 6, 11
waypoint 28, 31
Next Turn 86
GPSMAP 276C Owner’s Manual
alarm 68
NMEA 88, 89, 90, 107
North Up 6, 43
No Beacon Signal 109
O
“Off Route Recalculating” Announcement 86
Off Course 69
Off Road 85
On-Screen Button 8
Options Menu
opening 9
using 9
OUT Key 7
Overzoom 44
P
PAGE Key 7
Page Layout 78
highway 51
trip computer 67
Page Sequence 14
Panning the Map 43, 45
PC Interface Cable 105
Persistent Alarm 68
Plan Route 25, 52
Plan Trips 70
Point 70
Points of Interest 18
Position 108
Position Mode 43
Position Report 54–57, 113–114
Power 2, 3, 104
connector 1, 4
key 7
outlet 2
Practice Mode. See Simulator Mode
Project Waypoint Location 31
Proximity 36
alarms 36
points tab 35
waypoint 36
Q
QUIT Key 7
R
Recalculating 86
Receiver Not Usable 5
Receiver Status 5
Receive Satellite Signals 3
Receiving a DSC Call 56
Record Tracks 37, 40
Reference Position 19
Registration 118
Reset Timer 83
Reset Trip Data 53, 67
Review Route 23
Road Routing Tab 85
Rocker Key 7
Route 24, 70, 108
add points 24, 30
create 21–25
edit 24–25
leg transition 25
options menu 25
preference 85
RTCM 88, 89
S
Safety Information 120
Sail Boat Racing Timer 49
Satellite Acquisition 5
Save Present Location 26
Save this Route 66
Saving the Current Route 66
Saving Tracks 38, 39, 40
Scanning for Beacon 109
Scan for a Frequency 89
Scroll Bar 8
Searching for WAAS 108
Searching the Sky 5
Search History 19
Selecting Options 9
Serial Communications Port 105
Serial Data Format 88
Serial Number 1, 118
Setup Tab
guidance tab 86
125
INDEX
road routing tab 85
system tab 82
timers tab 83
time tab 83
units tab 84
welcome tab 77
Set an Alarm 68
Set Date 83
Set Fuel Flow 25
Set Speed 25
Shallow Water 69
Shorter Distance 85
Signal Strength 5
Simulate 6, 11, 12, 82
GPS 5
navigation 12, 13
Sonar 91, 92–95
adjusting 93–95
alarms 69
on the map page 91
setting up 96, 98
understanding 99
Sound Tab 81
Speaker 81
Specifications 102
Speed Filter 82
Split Screen, Sonar 95
Stop Navigation 52
Storage vi
Sun & Moon Tab 73
126
Switch Modes 14, 58
System Alarms 69
System Tab 82
T
Temperature 76, 84
Text Language 82
Thermoclines 101
Tide
chart 72
information 71
station 18, 72
tab 71
Time
delay 110
format 83
offsets 112
tab 83
zone 83
Timer 49
Timers Tab 83
Toll Roads 86
TracBack 15, 40
Track
legs 40
log 37, 38, 40
review page 38, 39
tab 37
TracBack 39, 40
Track Up 6, 43
Transducer 96, 100
Trip Computer Page 53, 67
page layout 67
Trip Planning 25, 70
Tuning Beacon 109
Turn-by-Turn Route 16, 59, 61, 64
Turn Off Recalculation Announcement 86
Turn Unit On and Off 3
U
U-Turns 86
Underwater Waypoints 95
Units Tab 84
Unpaved Roads 86
Usage Mode 14, 82
USB 88
connector 1, 105
data cable 105
User Points Tab 32
UTC 83
UTM/UPS 112
Warning Page 3
Waterproof vi
Water Speed 97
Water Temp 69
Waypoint 18, 26, 108
categories 33
create 26–36
edit 32
information page 20
name 32
proximity 36
symbol 32
transition to next 25
Week View 70
Whiteline 94, 101
Wide Area Augmentation System.
See WAAS
Z
Zoom 44
V
VHF 54, 113
View Details 46
Voice Language 81
Volume 3, 81
W
WAAS 6, 82, 104, 108, 109
GPSMAP 276C Owner’s Manual
For the latest free software updates (excluding map data) throughout the life of your
Garmin products, visit the Garmin Web site at www.garmin.com.
© Copyright 2004 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
www.garmin.com
Part Number 190-00335-00 Rev. B