Owner`s manual | Garmin 276C GPS Receiver User Manual

GPSMAP 276C
®
chartplotting receiver
owner’s manual
© Copyright 2004, 2005 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®, MapSource®, and See-Thru® are registered trademarks of Garmin Ltd. or its subsidiaries and
may not be used without the express permission of Garmin.
August 2005
Part Number 190-00335-00 Rev. C
Printed in Taiwan
INTRODUCTION > ABOUT THIS MANUAL
INTRODUCTION
Thank you for choosing the Garmin® GPSMAP® 276C, which
utilizes the proven performance of Garmin GPS and full-featured
mapping to create an unsurpassed portable marine navigation
chartplotter and automobile navigation device. Take a moment to
compare the contents of this package with the packing list on the
outside of the box; if any pieces are missing, contact your Garmin
dealer immediately.
About This Manual
To get the most out of your new navigation system, take time to read
this manual and learn the operating procedures for your unit. This
manual is organized into the following sections:
The Introduction contains the Table of Contents. The Getting
Started section provides an overview of the unit, how to turn the
unit on, and how to simulate navigation.
The Basic Operation in Marine Mode section provides you with
information about navigating with the GPSMAP 276C in Marine
Mode. The Marine Mode Pages and Features section reviews the
main pages and features in Marine Mode, such as using DSC and
Man OverBoard.
GPSMAP 276C Owner’s Manual
The Basic Operation in Automotive Mode section provides you
with information about navigating with the GPSMAP 276C in
Automotive Mode. The Automotive Mode Pages and Features
section reviews, in detail, the main pages and features in Automotive
Mode, such as the Trip Data Page and creating waypoints.
The Main Menu section describes features found on the Main
Menu, and information on how to change settings.
If you have a Garmin Sounder Module connected to your
GPSMAP 276C, refer to the Setting Up and Using Sonar section.
The Appendix contains specifications, optional accessories,
maintenance information, and other product information.
An Index is provided at the end of the manual for reference.
Manual Conventions
This manual uses the term Warning to indicate a potentially
hazardous situation, which, if not avoided, could result in death or
serious injury.
This manual uses the term Caution to indicate a potentially
hazardous situation, which, if not avoided, may result in minor
injury or property damage. It may also be used without the symbol
to alert you to avoid unsafe practices.
i
INTRODUCTION > TABLE OF CONTENTS
Table of Contents
Introduction...........................................................................i
Caring for the GPSMAP 276C ................................................ iv
Warning .................................................................................... v
Caution .................................................................................... vi
Getting Started.....................................................................1
Unit Overview .......................................................................... 1
Charging the GPSMAP 276C .................................................. 2
Turning On the GPSMAP 276C ............................................... 3
Getting Satellite Signals ......................................................... 4
Using the GPSMAP 276C ........................................................ 8
Simulator Mode ..................................................................... 11
Basic Operation In Marine Mode ......................................12
Marine Mode Page Sequence ............................................... 12
Navigating in Marine Mode ................................................... 13
Finding an Item ...................................................................... 16
Creating and Using Routes .................................................. 19
Creating and Using Waypoints ............................................ 24
Managing Your Tracks .......................................................... 35
Following a Marine Route ..................................................... 39
ii
Marine Mode Pages and Features ...................................41
Map Page................................................................................ 41
Compass Page....................................................................... 47
Highway Page ........................................................................ 50
Active Route Page ................................................................. 52
Position Data Page ................................................................ 53
Basic Operation In Automotive Mode ..............................54
Automotive Mode Page Sequence....................................... 54
Navigating in Automotive Mode ........................................... 55
Editing Your Route ................................................................ 58
Following an Automotive Route........................................... 60
Automotive Mode Pages and Features ...........................61
Map Page................................................................................ 61
Current Route Page............................................................... 62
Trip Computer Page .............................................................. 63
Main Menu ..........................................................................64
GPS Tab .................................................................................. 64
Route Tab ............................................................................... 65
Points Tab .............................................................................. 65
Track Tab ................................................................................ 66
DSC Tab .................................................................................. 66
GPSMAP 276C Owner’s Manual
INTRODUCTION > TABLE OF CONTENTS
Sonar Tab ............................................................................... 70
Alarms Tab ............................................................................. 71
Calendar Tab .......................................................................... 73
Celestial Tab .......................................................................... 74
Message Tab .......................................................................... 78
Display Tab ............................................................................ 79
Sound Tab .............................................................................. 80
Setup Tab ............................................................................... 80
Setting Up and Using Sonar .............................................89
Digital Selective Calling (DSC) ........................................... 112
Messages ............................................................................. 114
Data Field Options............................................................... 116
Software License Agreement ............................................. 118
Product Registration ........................................................... 118
Limited Warranty ................................................................. 119
FCC Compliance.................................................................. 120
Index .................................................................................121
Showing Sonar on the Map Page......................................... 89
Using the Sonar Page ........................................................... 90
Setting Up Sonar ................................................................... 93
Understanding Sonar ............................................................ 97
Appendix ..........................................................................101
Specifications ...................................................................... 101
Optional Accessories .......................................................... 102
Installation Information....................................................... 103
Learning About GPS ........................................................... 107
LORAN TD Setup ................................................................. 109
Map Datums and Location Formats ...................................111
GPSMAP 276C Owner’s Manual
iii
INTRODUCTION > CARING FOR THE GPSMAP 376C
Caring for the GPSMAP 276C
Storage
Cleaning the Case
Clean the unit’s outer casing (except for the screen) using a cloth
dampened with a mild detergent solution and then wipe dry. Avoid
chemical cleaners and solvents that may damage plastic components.
Do not store the GPSMAP 276C where prolonged exposure to
temperature extremes may occur (such as in the trunk of a car) as
permanent damage may result. User information, such as waypoints
and routes are retained in the unit’s memory without the need for
external power. It is always a good practice to back up important
user data by manually recording it or downloading it to a PC
(transferring it to MapSource).
Cleaning the Screen
Water Immersion
The GPSMAP 276C case is constructed of high quality materials
and does not require user maintenance except cleaning.
The GPSMAP 276C screen should be cleaned using a soft, clean,
lint-free cloth. Water, isopropyl alcohol, or eyeglass cleaner can be
used if needed. If these are used, apply the liquid to the cloth and
then gently wipe the screen with the moistened cloth.
iv
The GPSMAP 276C is waterproof to IEC Standard 60529 IPX7.
It can withstand immersion in 1 meter of water for 30 minutes.
Prolonged submersion can cause damage to the unit. After
submersion, be certain to wipe and air dry the unit before reuse or
charging.
GPSMAP 276C Owner’s Manual
INTRODUCTION > WARNING
Warning
Failure to avoid the following potentially hazardous situations could
result in an accident or collision resulting in death or serious injury.
When installing the GPSMAP 276C in a vehicle, place the unit securely
so that it does not interfere with vehicle operating controls or obstruct the
driver’s view of the road (see diagram).
Do not mount
where driver’s
field of vision is
blocked.
Do not place
unsecured on
the vehicle
dash.
Do not mount in front of an airbag
field of deployment.
Always operate the vehicle in a safe manner. Do not become distracted by
the GPSMAP 276C while driving, and always be fully aware of all driving
conditions. Minimize the amount of time spent viewing the screen of the
GPSMAP 276C while driving and use voice prompts when possible. Do
not enter destinations, change settings, or access any functions requiring
prolonged use of the unit’s controls while driving. Pull over in a safe and
legal manner before attempting such operations.
When navigating, carefully compare information displayed on the GPSMAP
276C to all available navigation sources, including information from
street signs, visual sightings, and maps. For safety, always resolve any
discrepancies or questions before continuing navigation.
The GPSMAP 276C contains a replaceable, rechargeable lithium-ion battery.
The battery may present a risk of fire or chemical burn if mistreated.
•
Do not recharge out of the unit, disassemble, heat above 140°F
(60°C), or incinerate.
• Keep used battery away from children.
• Only replace with Garmin Lithium-ion Battery Pack. Using another
battery may present a risk of fire or explosion.
• Dispose of used battery or unit properly. Contact your local waste
disposal department for information on properly disposing of
lithium-ion batteries.
Use the electronic chart in the GPSMAP 276C only to facilitate, not to
replace, the use of authorized government charts. Official government charts
and notices to mariners contain all information needed to navigate safely.
WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive
harm. This Notice is being provided in accordance with California’s Proposition 65. If you have any questions or would like additional information, please refer to
our Web site at http://www.garmin.com/prop65.
GPSMAP 276C Owner’s Manual
v
INTRODUCTION > CAUTION
Caution
Failure to avoid the following potentially hazardous situations may
result in injury or property damage.
The GPSMAP 276C is designed to provide you with route suggestions. It
does not reflect road closures or road conditions, traffic congestion, weather
conditions, or other factors that may affect safety or timing while driving.
Use the GPSMAP 276C only as a navigational aid. Do not attempt to use
the GPSMAP 276C for any purpose requiring precise measurement of
direction, distance, location, or topography.
The Global Positioning System (GPS) is operated by the United States
government, which is solely responsible for its accuracy and maintenance.
The government’s system is subject to changes which could affect the
accuracy and performance of all GPS equipment, including the GPSMAP
276C. Although the GPSMAP 276C is a precision navigation device, any
navigation device can be misused or misinterpreted and, therefore, become
unsafe.
Map Data Information: One of the goals of Garmin is to provide customers with the most complete and accurate cartography that is available to us at a reasonable
cost. We use a combination of governmental and private data sources, which we identify in product literature and copyright messages displayed to the consumer.
Virtually all data sources contain inaccurate or incomplete data to some extent. This is particularly true outside the United States, where complete and accurate
digital data is either not available or prohibitively expensive.
vi
GPSMAP 276C Owner’s Manual
GETTING STARTED > UNIT OVERVIEW
GETTING STARTED
Unit Overview
The GPSMAP 276C is an all-in-one, versatile color chartplotter and automobile navigator—perfect for land or water. This portable GPS
navigator features a 256-color TFT display that is easy to read in bright sun, a built-in basemap, and auto routing to provide you with
automatically generated turn-by-turn directions.
GPS antenna
256-Color TFT display
with backlighting
Backlit keypad for easy nighttime operation
GPSMAP 276C Owner’s Manual
Detachable antenna
collapses for storage.
Be sure the antenna
is up (as shown
here) to receive
satellite signals.
See the Appendix,
page 106, for
instructions on
removing the
antenna.
External power
connector under USB connector
weather cap under weather cap
Battery pack. Press tab down
to remove battery pack for
replacement, if necessary.
Slot for optional
data card
Serial number
1
GETTING STARTED > CHARGING THE GPSMAP 276C
Charging the GPSMAP 276C
Before using the unit, you might need to charge the battery in the
GPSMAP 276C. Plug the unit into an external power source to
charge. You can use the unit while it is charging.
If you do not want to use the unit, but you would like to charge the
battery, you can put the unit into Charge Mode. Connect the unit to
an external power supply. Press and hold the POWER key. Instead
of completely turning off, the unit now goes into Charge Mode.
To charge the unit’s battery:
1. Lift the rubber weather cap to expose the power connector
on the back of the unit. See the image on page 1 for
connector location.
2. Align the notches and push the plug into the connector until
fully seated.
3. Plug the 12 Volt adapter into an available AC outlet, or
cigarette lighter receptacle if you have a cigarette lighter
adapter. Use care when routing the cable; be certain that it
does not interfere with vehicle operation.
The unit begins charging as soon as external power is applied.
Placing the unit in Charge Mode charges the unit more quickly than
when the unit is turned on and reduces draw on the vessel or vehicle
battery.
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
Charge Mode
NOTE: While in Charge Mode, the unit draws a small amount of
current from the vessel or vehicle battery. To avoid discharging
the vehicle’s battery, disconnect the external power cable from
the GPSMAP 276C when not in use for several days.
After using the unit a lot, you might 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 GPS
receiver must collect satellite data and establish its current location.
To ensure proper initialization, the GPSMAP 276C is shipped from
the factory in AutoLocate mode, which allows the receiver to “find
itself” anywhere in the world. Before you turn on the unit to start
initialization, be sure that the antenna is rotated up as shown on
page 1, and it has a clear and unobstructed view of the sky to receive
satellite signals.
To turn the GPSMAP 276C on and off:
1. Press and hold the POWER key. When the unit turns on, a
tone sounds and the Warning Page appears.
Adjusting the Backlight and Volume
You can adjust the backlight to see the display better. If you are
using the optional External Speaker with 12/24-Volt Adapter Cable
with the GPSMAP 276C, you can adjust the volume level of the
audio output.
To adjust the backlight level or volume:
1. Press and quickly release the POWER key.
2. Press up on the ROCKER to increase the brightness or
press 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.
4. Press MENU to view the options menu.
Battery time remaining and power source indicator
Warning Page
2. Read the warning, and then press ENTER to continue.
3. To turn off the GPSMAP 276C, press and hold the POWER
key again.
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 Tab
It might take a few minutes to acquire satellites and display your
current location on the map. To get signals more quickly, be sure the
antenna is raised to the up position shown in the image on page 1.
As the receiver locks onto satellites, a signal strength bar appears
for each satellite in view, with the appropriate satellite number
underneath each bar. The numbers below each bar represent the
particular satellite that is being received. Numbers above 33 indicate
WAAS satellites.
After you turn on the GPSMAP 276C, the unit automatically begins
searching for satellites. The GPS page appears while the unit is
gathering satellite signals and acquiring a fix, which should take
only a few minutes. While the GPSMAP 276C is getting satellite
signals, the GPS page shows the status as “Acquiring Satellites.”
GPS Tab
NOTE: While acquiring satellites, the Map Page may show the
wrong location, such as China. This does not mean your unit has
the wrong data loaded; it means you need to wait a few more
minutes to acquire satellites and find your current location.
4
The GPS tab on the Main Menu provides a visual reference of
satellite acquisition, receiver status, and accuracy. The sky view and
signal strength bars give an indication of what satellites are visible
to the receiver and whether they are being tracked.
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.
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 Status
The progress of satellite acquisition is shown in three stages:
• No signal strength bars—the receiver is looking for the
satellites indicated.
• White signal strength bars—the receiver has found the
satellite and is collecting data.
• Green signal strength bars—the receiver has collected the
necessary data from this satellite.
When the GPSMAP 276C collects the necessary data from the best
satellites in view to calculate a fix, the status field indicates the status
of the receiver. The unit then updates the location, date, and time.
Receiver Status
The Receiver Status field shows one of the following conditions:
• Searching the Sky—the receiver is looking for satellites.
GPSMAP 276C Owner’s Manual
• AutoLocate—the receiver is looking for any satellite whose
almanac was collected, which can take up to five minutes.
• Acquiring Satellites—the receiver is looking for and
collecting data from satellites visible at its last known or
initialized location but has not acquired a fix.
• 2D GPS Location—At least three satellites were acquired
and a two-dimensional position fix was calculated. “2D
Differential” appears when you are receiving DGPS
corrections in 2D mode, and a “D” appears on the strength bar
of satellites being corrected.
• 3D GPS Location—At least four satellites were acquired
and a three-dimensional fix was calculated. “3D Differential”
appears when you are receiving DGPS corrections in 3D
mode, and a “D” appears on the strength bar of satellites being
corrected.
• Lost Satellite Reception—the receiver is no longer tracking
enough satellites for a 2D or 3D fix.
• Receiver Not Usable—the receiver is unusable, possibly due
to interference or abnormal satellite conditions. Turn the unit
off and back on to reset.
• Simulating GPS—the receiver is in Simulator Mode.
• GPS Off—the GPS receiver is turned off.
5
GETTING STARTED > GETTING SATELLITE SIGNALS
GPS Options
Press MENU twice to open the Main Menu. Use the ROCKER to
highlight the GPS tab. Press MENU to open the Options menu.
GPS Tips
While the receiver is gathering information, your location on the
map might appear different from where you actually are located.
As soon as the receiver gathers enough satellite information, your
proper location appears on the map.
Any time you have traveled more than 600 miles with the GPS
receiver turned off, the receiver may take longer than normal to
initialize and find your location.
GPS Tab Options Menu
Start/Stop Simulator—starts and stops Simulator Mode, which is
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, see “Learning about GPS” on page 107.
Enable/Disable WAAS—enables or disables WAAS capability. See
page 108 of the “Appendix” for more information about WAAS.
Track Up Skyview/North Up Skyview—orients the sky view
display on the GPS tab to North Up or Track Up.
New Altitude—allows you to manually enter your altitude.
New Location—allows you to enter a new location automatically or
using the map.
6
GPSMAP 276C Owner’s Manual
GETTING STARTED > USING THE GPSMAP 276C KEYPAD
PAGE Key
• Press to cycle through the main pages in
sequence and exit a submenu page.
• Press and hold to switch between Marine and
Automotive modes.
QUIT Key
• Press to cycle through the main pages in reverse
sequence, revert to the previous value in a data
entry field, or cancel an unintended function.
ENTER/MARK Key
• Press to select a highlighted option.
• Press and hold to mark your current location as a
waypoint.
MENU Key
• Press to open the options menu for the current
page.
• Press twice to open the Main Menu.
POWER Key
• Press and hold to turn the unit on or off.
• Press and release to adjust the backlighting and
external speaker volume.
GPSMAP 276C Owner’s Manual
IN and OUT Keys
• Press to adjust map scale to show a larger area
with less detail (zoom out) or a smaller area with
more detail (zoom in).
ROCKER
• Press up, down, left, or right to highlight options
and to enter data, or use to pan the arrow on the
Map Page.
NAV/MOB Key
• Press to open the navigation menu.
• In Marine Mode, press and hold to start the MOB
function.
In Automotive Mode, press and hold to show the
Next Turn page and announce the next turn when
using the external speaker.
FIND Key
• Press to quickly search for and access user
waypoints, cities, and other items used for
navigation.
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 Terms
The GPSMAP 276C’s advanced keypad system is designed to allow
quick, convenient selection of navigation options and data entry.
As you progress through this owner’s manual, you are directed to
press a specific key or highlight a field on the screen. When you
are directed to press a key, you should press and quickly release the
key. If the key needs to be held down for a period of time to start
a secondary function, the instructions will tell you to do so. When
a field is selected on the screen, it is highlighted in yellow. The
position of the highlight is controlled by the ROCKER.
On-screen button—use the ROCKER to highlight a button, and
press ENTER to select the button.
Scroll bar—when viewing a list of items too long to appear on the
screen, a scroll bar appears along the right side of the list. To scroll
through a list, press up or down on the ROCKER.
Default—the factory setting saved in the unit’s memory. You can
change the settings, but you can also revert to the factory (default)
settings when you select Restore Defaults.
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 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.
Highlighted field
On-screen buttons
Field—the location on a page where data or an option can be shown
and entered. Select (highlight) a field using the ROCKER to begin
entering data or selecting options.
8
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 to highlight,
select, or choose an item in a list or a field on the screen. Use the
ENTER key and the ROCKER to select options, enter names and
numbers in data fields, and activate your selections.
To select and activate an option:
1. From any page, press MENU. An options menu appears with
a list of optional features for that page.
2. Use the ROCKER to move the highlight up, down, right, or
left on the menu to the option you want.
3. Press ENTER to select the feature. Another window with
more options might appear. If so, select an option, and press
ENTER again.
To exit a menu or return to the previous setting:
Press QUIT. The QUIT key moves backward through your
steps. Press QUIT repeatedly to return to the starting page.
To select an on-screen button:
On a page with on-screen buttons, use the ROCKER to
highlight an on-screen button, and press ENTER.
On-screen
button
To mark your current location as a waypoint, press and hold
ENTER/MARK until the New Waypoint Page opens.
To enter data in a data field:
1. Use the ROCKER to highlight the data field you want, and
press ENTER to select the field.
Selecting an option from an options menu
GPSMAP 276C Owner’s Manual
2. Press up or down on the ROCKER 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 on the ROCKER to drop to the next
line.
9
GETTING STARTED > USING THE GPSMAP 276C
Entering
data
Setup Tab Options Menu
TIP: To clear the entire data field, highlight the left-most
character field and press left on the ROCKER again.
3. Press ENTER.
Not all fields are programmable. When you are on a page with fields
that are not selectable, the highlight skips over them.
Restoring Default Settings
You can restore factory defaults for the following Main Menu tabs:
Track, Alarms, Display, Sound, and Setup. For more information
about the Main Menu, see the “Main Menu” section beginning on
page 64.
To restore default settings:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight a tab, and then press MENU to
open the options menu.
10
3. Highlight Restore Default, and press ENTER.
Using the Databases
Optional Garmin data cards and MapSource CD-ROMs enhance the
versatility of your GPSMAP 276C. With optional MapSource City
Select data, you can view listings of nearby restaurants, lodging,
shopping centers, attractions and entertainment, and even retrieve
addresses and phone numbers for any listed location.
The included USB Interface Cable or an optional PC Interface Cable
(with a serial connector) is used to transfer MapSource CD-ROM
data to the optional data card.
Visit the Garmin Web site at http://www.garmin.com/cartography/
for compatible MapSource products.
GPSMAP 276C Owner’s Manual
GETTING STARTED > SIMULATOR MODE
Simulator Mode
GPS tab
To help you get to know your GPSMAP 276C, you can use the
unit in Simulator Mode. Simulator Mode is helpful for practicing
with the unit indoors or when no satellite signals are available. All
waypoints and routes created in Simulator Mode are retained in
memory for future use.
WARNING: Do not attempt to navigate using Simulator Mode.
When the unit is set to Simulator Mode, the GPS receiver is
turned off. Any satellite signal strength bars shown are only
simulations and do not represent the strength of actual satellite
signals.
Starting Simulator Mode
You can start Simulator Mode from the Setup tab or the GPS tab on
the Main Menu.
To put the unit into Simulator Mode using the GPS tab:
1. Press MENU twice to open the Main Menu.
2. Highlight the GPS tab.
3. Press MENU to open the GPS tab options menu.
4. Highlight Start Simulator, and press ENTER.
GPSMAP 276C Owner’s Manual
Starting Simulator Mode from the GPS tab
Entering a New Location
Use the GPS options menu to enter a new location to simulate from.
To enter a New Location using the map:
1.
2.
3.
4.
Press MENU twice, and then highlight the GPS tab.
Press MENU to open the options menu.
Highlight New Location, and press ENTER.
Highlight Use Map, and press ENTER.
5. Use the ROCKER to move the panning arrow to the location
you want on the map, and press ENTER.
11
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 key. The Usage Mode menu appears.
2. Use the ROCKER to select either Automotive or Marine, and press ENTER.
Marine Mode Page Sequence
The GPSMAP 276C offers two usage modes, Marine Mode (default) and Automotive Mode. The main pages are linked together in a series
that you can cycle through by pressing the PAGE key to move forward and the QUIT key to reverse. Each page also has an options menu
that allows you to customize each page to your preferences and select features. To view the options menu, press the MENU key.
Marine Mode features five main pages: Map, Compass, Highway, Active Route, and Position Data. If you have a Garmin GSD 20 Sonar
Module connected to the GPSMAP 276C, a Sonar Page is available.
The following examples show the main pages in Marine Mode with optional MapSource BlueChart detailed maps. Marine Mode is the
default mode for the GPSMAP 276C. This manual first addresses the page, such as the Map Page, as it appears in Marine Mode. The manual
then describes the page as shown in Automotive Mode.
Map Page
12
Compass Page
Highway Page
Active Route Page
Position Data Page
Sonar Page
(Optional)
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 NAV.
• Press NAV to activate a new route using the Find Menu or
activate a saved route or track.
• Press the FIND key to search for a particular item and create
a route to it.
Marine Mode and Automotive Mode are similar. Most of the
features discussed here also apply to Automotive Mode.
When you are actively navigating, you see a magenta line that
always runs from your current location to the destination on the Map
Page. You can use the Map Page, Compass Page, Highway Page,
and Position Data Page to help navigate to your destination.
Initiating Navigation
There are several different ways to initiate navigation. Press the
NAV key to open the Navigate menu. Using one of the navigation
options, you can quickly create a route to your destination. In
Marine Mode, you can initiate Man OverBoard (MOB) navigation,
which places a waypoint in the location and then navigates you back
to that location. You can also initiate navigation through the Find
menu.
GPSMAP 276C Owner’s Manual
Navigate Menu in Marine Mode
Press NAV to open the Navigate menu, which contains the following
options:
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 on the Main
Menu. For information about routes, see page 19.
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, see page 35.
MOB (Man OverBoard)—creates a MOB waypoint and navigates
to that location.
13
BASIC OPERATION IN MARINE MODE > NAVIGATING IN MARINE MODE
To go to a highlighted map item:
1. Use ROCKER to highlight the item to which you want to
navigate on the Map Page.
2. Press NAV. Go To <point name> appears in the list of
options and is automatically highlighted. If you selected an
area of the map that is not a map feature, Go To MAP Point
is listed. Select Go To <point name> or Go To MAP Point,
and press ENTER.
To start a new route using the Find Menu:
1. Press the NAV key to open the Navigate menu.
2. Highlight Go To Point, and press ENTER to open the Find
menu.
3. From the Find menu, highlight Waypoints and press ENTER.
(You can also choose to go to other points, such as Cities or
Tide Stations from this list. The steps vary only slightly from
those listed for Waypoints.)
4. Select a waypoint from the list, and press ENTER to open the
Waypoint Review Page.
Navigate Menu
3. Follow the magenta route created on the Map Page. Follow
the turn-by-turn route (auto-route) by using the Next Turns
Page and Current Route Page. If you are using the external
speaker, follow the voice prompts.
14
Waypoint Review Page
5. 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, highlight a category, such as Cities,
and press ENTER.
3. Press ENTER and use the ROCKER to begin entering the
letters contained in the item name. The list begins to sort
by the items that contain the letters you are entering. Press
ENTER when finished.
Man OverBoard (MOB)
Use the MOB function to simultaneously mark your current location
and create a direct route back to that location for quick response to
emergency situations.
To activate the MOB function:
1. Press and hold the NAV/MOB key, or press the NAV/MOB
key twice.
2. Press ENTER to confirm and begin navigating to the MOB
location.
When a MOB is activated, a MOB waypoint with an international
MOB symbol is created, and the unit begins actively navigating to
that point. Use any of the Navigation Pages to guide you back to the
MOB point. The MOB waypoint is stored in the waypoint list and
can be deleted like any other waypoint.
Finding an item using the Containing field. The unit searches for items
containing the letter combination you enter and shows them in the list.
4. Highlight the item from the list and press ENTER.
5. Press ENTER when the Go To button is highlighted.
For complete information about finding an item, see the “Finding an
Item” section.
GPSMAP 276C Owner’s Manual
15
BASIC OPERATION IN MARINE MODE > FINDING AN ITEM
Finding an Item
Use the Find menu to easily search the stored waypoints and points
of interest. To open the Find menu, press the FIND key.
The Find menu is comprised of several default categories:
Waypoints, Cities, Exits, Transportation, and Tide Stations.
Additional categories appear depending on the optional BlueChart or
MapSource data card in the unit.
Using the Find From Feature
The Find option also supports a “find from” feature that allows
you to center your search around an item you have just found. For
example, you search for Restricted Areas and the search shows an
“Anchoring Prohibited” search result. If you press FIND again, you
see “From Anchoring Prohibited” as the new search from point.
You can also use the Find feature to center your search from any
waypoint, route list entry, map item, or tide station. Highlight the
item you want to find from and press the FIND key.
To find an item from another location on the map:
Find Menu
Shown without additional BlueChart or
MapSource maps installed
Follow the directions on page 15 to search for an item near your
current location and then route to it.
16
1. Open the Map Page. Use the ROCKER to pan the arrow
(pointer) to the location you want, and press FIND. The Find
menu opens, showing “From Map Pointer.” The list of items is
sorted to show items nearest the selected location.
2. Using the ROCKER, highlight a category from the list, and
press ENTER.
3. Using the ROCKER, highlight an item from the list, and press
ENTER. The item’s information page automatically opens,
allowing you to save the item as a waypoint, show the item
on the map, or automatically create a route to (Go To) the
item.
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 FIND.
2. Using the ROCKER, highlight a category from the list, and
press ENTER.
3. Press MENU to open the options menu.
To find an item near another item:
1. Press FIND. The Find menu appears
2. Highlight the item you want to Find From.
3. Press FIND. The Find menu opens again with items near the
previously-selected item. Search for the item you want.
Recently Found Items
The Recently Found Page shows a list of the items you have
searched for or gone to recently.
To view recently found items:
Find From Options Menu
4. Highlight Near Other, and press ENTER. If you are actively
following a route, you can also select one of the other options
listed in the Find From list.
5. Select a reference location on the map, and press ENTER.
The list shows items nearest to the new map location.
GPSMAP 276C Owner’s Manual
1. Press FIND. The Find menu appears.
2. Use the ROCKER to highlight Recently Found, and press
ENTER. The Recently Found Page appears.
3. Press MENU to display the options menu.
Show Find History—allows you to toggle between showing the
items you have searched for recently (Find History) and the items
you have recently created a Go To for (Go To History).
Remove Point—removes the point that is highlighted in the list.
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BASIC OPERATION IN MARINE MODE > FINDING AN ITEM
Viewing the Information Page
Each item on the map and each item listed in the Find menu results
list has an Information Page.
To view details about an item:
1. Highlight a point on the map or in the search results list, and
press ENTER.
An Information Page appears with details about the item in
a tabbed format. 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 FIND, and then
press MENU. The following options are available:
Enable Auto Arrange—automatically arranges the Find menu.
Disable Auto Arrange and Restore Default options appear when
you select Enable Auto Arrange.
Near Other—allows you to select a new location from which to
compile the Find items lists. Using the ROCKER, move the map
arrow to the location you want, and press ENTER.
Map Information—shows information about the detailed map data
stored on the data card and allows you to select which maps appear
on the Map Page.
Additional selections are included in the options menu when you are
navigating:
Near Next—compiles the Find items lists based on the next turn in
the route.
Map Feature Information Page
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.
18
Near Destination—compiles the Find items lists based on the route
destination.
Near Current Route—compiles the Find items lists based on the
active route.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
Creating and Using Routes
Use the GPSMAP 276C to create and store up to 50 reversible
routes, with up to 300 points each.
Creating a Route
Use the Route tab on the Main Menu to create routes. You can create
routes two ways. The first way is to select waypoints from the Find
Menu, allowing you to see a list of the route points as you create the
route. The second way is by selecting waypoints or map items from
the Map Page, allowing you to see each route point graphically onscreen as you create the route.
To create a route using the Find menu:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Route tab.
3. Press MENU to open the Route options menu. Select New
Route, and press ENTER, or highlight the first available
blank route slot, and press ENTER. The Route Review Page
automatically opens, showing a blank route.
4. Press ENTER to find items to add to the route. The Find
menu opens.
5. Using the methods discussed in the “Finding an Item” section
beginning on page 16, select a point to add to your route.
When you find an item, highlight OK and press ENTER to
add the point to the route. Repeat until you have added all of
the points to the route.
Route Tab with the Route List
Creating a new route on Route Review Page
GPSMAP 276C Owner’s Manual
19
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
To create a route graphically:
1. Press MENU twice to open the Main Menu. Use the
ROCKER to highlight the Route tab.
2. Press MENU to display the Route options menu. Select New
Route, and press ENTER.
3. Highlight the first blank slot in the Route List Page and press
MENU. Use the ROCKER to highlight Edit on Map, and
press ENTER.
4. Use the ROCKER to highlight the location you want to add,
and press ENTER.
If you selected an area of the map that is not a feature or
waypoint, a new waypoint is created for that location. Press
ENTER on the New Waypoint Page to save the location as
a waypoint and continue adding points to your route. You
can edit the properties of this waypoint as you can with any
waypoint.
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 to highlight Navigate Route, and press
ENTER.
3. Highlight a route, and press ENTER.
Select a route
from list
Creating a new route on the map
20
Select the route you want to take.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
Editing a Route
After you create a route, use the Route Review Page to edit, change
the name, and review route points of a selected route.
To change the name of the route:
1. Press MENU twice to open the Main Menu. Highlight the
Route tab.
2. Highlight the route you want to edit, and press ENTER.
3. With the Route Review Page open, highlight the route name
field at the top of the page, and press ENTER.
Enter a new
Route name
here
To review individual route points:
1. Press MENU twice to open the Main Menu. Highlight the
Route tab.
2. From the Route List Page, use the ROCKER to highlight the
name of the route, and press ENTER.
3. From the Route Review Page, highlight a point, and press
ENTER.
4. On the Point Review Page, choose Next (highlight the next
point on the route list), Show Map (show the point on a map
window), or Save (save the point as a waypoint) and press
ENTER. If the route point is a user waypoint, you can edit
any of the waypoint properties on the Waypoint Page (see
the “Creating and Using Waypoints” section beginning on
page 24 for details).
When you return to the Route Review Page, the next point in the
route is automatically highlighted. You can review each point on the
route by pressing ENTER repeatedly.
Route Review Page
4. Use the ROCKER to enter the route name, and press
ENTER.
GPSMAP 276C Owner’s Manual
21
BASIC OPERATION IN MARINE MODE > CREATING AND USING ROUTES
To add points to the route:
1. Press MENU twice to open the Main Menu. Use the
ROCKER to select the Route tab.
2. Highlight a route, and press ENTER.
3. Press up or down on the ROCKER to highlight the spot in the
route that you want to add the new point. (The new point is
added before the highlighted route point), and press MENU.
4. Highlight Insert Waypoint, and press ENTER. The Find
Menu automatically opens for you to search for and select
the point you want to add to the route.
5. On the Point Review Page, highlight OK, and press ENTER
to add the new point to the route.
Route Review Page
22
To edit the route on the map:
1. Press MENU twice to open the Main Menu. Use the
ROCKER to select the Route tab.
2. Select a route and press ENTER. Press MENU to open the
Route Review Page options menu.
3. Highlight Edit on Map, and press ENTER.
4. Use the ROCKER to select a location on the route (the route
turns white when the arrow is over the route), and press
ENTER.
5. Use the ROCKER to drag the route to the new point location,
and press ENTER.
Editing the route on the map
6. If the New Waypoint Page opens, edit the waypoint as
needed, highlight OK, and press ENTER.
7. Repeat steps 4 through 6 until all points are added to the
route. Press QUIT when finished.
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.
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 on the Main Menu shows all the routes currently
stored in memory, along with a descriptive name for each route.
Highlight a route and press MENU to open the options menu. From
here you can activate the route, copy it, delete it, delete all routes,
and create a new route. You can also set up the routes to manually
transition to the next waypoint.
Manually Transitioning to the Next Waypoint
Entering Speed and Fuel Flow for trip planning
3. Enter the data for Speed and Fuel Flow. You also can enter
the date and time of your departure. Press QUIT to return to
the Route Review Page.
NOTE: Fuel flow rates are measured in units per hour. System
setting changes for units of measure (statute, nautical, or
metric) do not affect the fuel flow measure. You should enter fuel
flow rates based on information for your vehicle (such as the
operator’s manual or performance specifications), and note the
units of measure (gallons or liters).
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 leads you to the next point on
your route.
When you select Manual, you can transition to the next waypoint
at any time while navigating a route. While you are navigating the
route, open the Active Route Page. Press MENU. Highlight Next
Route Waypoint, and press ENTER to have the GPSMAP 276C
start routing you to the next point in your route.
23
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Creating and Using Waypoints
Waypoints are locations or landmarks you record and store in your
GPS. They are locations you might want to return to later, such as
checkpoints on a route or significant ground features. You can add
waypoints to routes and even create a Go To directly to the selected
waypoint.
Save your current location as a waypoint by pressing and holding
ENTER/MARK. You can also find waypoints using the map or
the Find menu, and then store them in the unit before ever leaving
home.
Marking Your Present Location
Use the ENTER/MARK key to quickly capture your present
location to create a new waypoint. You must have a valid position
(2D or 3D) fix to mark your present location. You can determine the
satellite fix by looking at the GPS tab on the Main Menu.
To mark your present location:
1. Press and hold ENTER/MARK until the New Waypoint Page
appears, and then release it. A default four-digit name and
symbol are assigned for the new waypoint.
The GPSMAP 276C stores up to 3,000 alphanumeric waypoints with
a user-defined icon, comment, elevation, depth, and temperature
available for each waypoint. Waypoints can be created using three
basic methods:
• ENTER/MARK—allows you to quickly mark your present
location.
• Graphically—allows you to define a new waypoint location
from the map display using the ROCKER.
• Text Entry—allows you to enter a new waypoint’s location
coordinates manually.
24
New Waypoint Page
2. To accept the waypoint with the default information, use the
ROCKER to highlight OK, and press ENTER.
To change any information on the New Waypoint Page,
highlight the appropriate field, and press ENTER. After
entering and confirming your changes, highlight OK, and
press ENTER.
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 see a
highlighted description of that item. The GPSMAP 276C uses the
map item text shown on the map as the default name and symbol for
the new waypoint.
To create a new waypoint using the Map Page:
1. Press PAGE until the Map Page appears.
2. Use the ROCKER to move the arrow to the map location or
map feature you want.
3. Press and quickly release ENTER/MARK to capture the
arrow location. Pressing and holding ENTER/MARK marks
your current location, not the arrow’s location.
If you have highlighted a map feature, an information page
appears after you press ENTER. Highlight Save, and press
ENTER to save the map item as a waypoint. The New Map
Waypoint Page appears.
GPSMAP 276C Owner’s Manual
Map Feature Information Page
Select Save to save the feature as a waypoint.
4. To accept the waypoint with the default information, highlight
OK, and press ENTER.
To change the any information on the New Map Waypoint
Page, highlight the appropriate field, and press ENTER. After
entering your changes, highlight OK, and press ENTER.
25
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Creating a Waypoint by Entering Coordinates
You can manually enter location coordinates to create a waypoint.
This method is useful for creating a waypoint at a specific latitude/
longitude position from a chart. You can manually change the
location coordinates in the New Waypoint Page to create a new
waypoint or use the Create Waypoint selection in the User Points
tab options menu.
To create a new waypoint by entering 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 location as the default location.
2. On the New Waypoint Page, use the ROCKER to highlight
the Location field, and press ENTER.
3. Highlight the character you want to change in the Location
field.
26
Entering location coordinates..
4. Press up or down on the ROCKER to change the character.
Repeat until the new location is entered. Use the ROCKER
to enter location coordinates, and press ENTER when
finished.
To change any other information on the New Waypoint Page,
highlight the appropriate field, and press 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
After you create and store a waypoint, you can modify, review,
rename, move, or delete it at any time using the Waypoint Review
and Waypoint Edit Pages. These pages provide virtually the same
information.
To access the Waypoint Edit Page:
1. Press MENU twice to open the Main Menu.
2. Highlight the Points tab.
To access the Waypoint Review Page:
1. Use the ROCKER to highlight a waypoint on the Map Page.
2. Press ENTER to open the Waypoint Review Page. If the
waypoint is located on a map feature or MapSource or
BlueChart feature, the Waypoint Review Page might include
additional tabs containing information about the other
features at that location.
Points Tab
3. Highlight the waypoint you want on the User sub tab, and
press ENTER to open the Waypoint Edit Page.
If the waypoint is located on a map feature or MapSource or
BlueChart feature, the Waypoint Edit Page will not show the
details of the other map features.
Waypoint Review Page
GPSMAP 276C Owner’s Manual
Use either of these methods to access the Waypoint Page so you can
edit the waypoint. Press MENU when the Waypoint Page is open to
access the Waypoint options menu.
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BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Adding a Waypoint to a Route
Append to Route adds the selected waypoint to the end of a route.
This option appears when you are not navigating. When you are
navigating to a destination, Add to Current Route appears. The
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 Edit Page, and press MENU to open the
options menu.
Averaging the Waypoint’s Location
Average Location makes the unit take several sample location
measurements for the waypoint and recalculate for a more accurate
location reading.
NOTE: You must have a GPS satellite fix before you can average
a waypoint’s location.
To calculate the average location:
1. Open the Waypoint Page, and press MENU to open the
options menu.
2. Select Average Location from the menu, and press ENTER.
The Average Location window appears. Watch the fields
change as the unit calculates the average location of the
waypoint.
Waypoint Options Menu
2. Select Append To Route from the options menu. The Select
Route window appears.
3. Highlight a route or select New Route, and press ENTER.
4. Highlight OK, and press ENTER to save the waypoint.
Average Location Page
3. Press ENTER to save the location.
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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
location as the default location.
2. Press MENU twice to open the Main Menu.
3. Highlight the Points tab.
4. Press MENU to open the New Waypoint Page options menu.
5. Highlight Project Location, and press ENTER.
6. To change the location from which you are projecting the new
waypoint, highlight the From field, and press ENTER. The
Find Menu opens.
Select the point from which you will project your new
waypoint just as you would select a waypoint or point of
interest. For more information see the “Finding an Item”
section on page 16.
7. To adjust the distance that the new waypoint is projected
beyond the original waypoint, highlight the Distance field,
and press ENTER. Enter the projection distance, and press
ENTER.
To adjust the bearing that the new waypoint is projected from
the original waypoint, highlight the Bearing field, and press
ENTER. Enter the bearing, and press ENTER.
8. After you adjust all elements of the projected location,
highlight Save, and press ENTER.
9. Make any other changes to the new waypoint data (such as
the name or symbol); highlight OK, and press ENTER.
Project Location Menu
Enter the distance, bearing, and location.
GPSMAP 276C Owner’s Manual
29
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
Editing a Waypoint
The User sub tab shows a master list of all waypoints currently
stored in memory. From the User list, you can review, edit, rename,
or delete individual waypoints, or delete all user waypoints.
To edit a waypoint:
1. Open the Waypoint Review or Waypoint Edit Page.
2. Highlight the waypoint name, symbol, or another field you
want to change, and press ENTER.
Symbol field
User Sub Tab
The total number of stored and available waypoints appears at the
bottom of the User sub tab, with the stored waypoints arranged in
alphanumeric order.
To start a Go To from the User sub tab:
1. Press MENU twice to open the Main Menu.
2. Select Points from the Main Menu, and then highlight User.
3. Highlight the waypoint you want in the list.
Name field
Waypoint Page
3. Use the ROCKER to select a symbol or enter data, and
press ENTER when finished.
To edit the next waypoint in the list:
1. After you edit the waypoint on the Waypoint Edit Page
(shown above), highlight Next, and press ENTER. The
Waypoint list appears with the next waypoint highlighted.
2. Press ENTER to edit that waypoint.
4. Press NAV to open the Navigate Menu. Highlight Go To
<Point Name>, and press ENTER.
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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 to help you manage
and use your waypoints. For example, you can create a Vacation
category that stores all of the waypoints you will use for your
upcoming vacation. When the vacation is over, you can delete all the
waypoints in that category by pushing a few buttons. You can create
up to 15 categories.
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. The Waypoint
Categories window opens.
3. Highlight Add, and press ENTER.
4. Use the ROCKER to enter a name for the category.
5. Highlight Save, and press ENTER.
When you create or edit a waypoint, you can select the category
from the Category list on the Waypoint Page.
To assign a category to a waypoint:
1. Open the Waypoint Edit Page. (You can also change the
category on the New Waypoint Page.)
2. Select the Category field, and press ENTER.
Select the
category to
which you want
to assign this
waypoint.
Waypoint Page
3. From the list, select the category to which you want to assign
the waypoint, and press ENTER.
Adding a new category
GPSMAP 276C Owner’s Manual
31
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
To delete a category:
1. With the Waypoint Categories window open, highlight the
category you want to delete, and press MENU.
2. Highlight Delete Category, and press ENTER.
Waypoint Categories Options Menu
3. Press ENTER again to finish deleting the category.
Deleting Waypoints
You can delete waypoints from the waypoint list in the Points tab or
from the Waypoint pages. To delete a waypoint from the Waypoint
Page, use the ROCKER to highlight the on-screen Delete button,
and press ENTER.
NOTE: When you delete a waypoint from the list, it cannot
be recovered from the unit. Back up important waypoints to a
computer using the optional PC cable and interface software,
such as MapSource, or write them down by hand.
32
To delete a waypoint from the User Points tab:
1. On the Points tab, use the ROCKER to highlight the
waypoint you want to delete.
2. Press MENU, highlight Delete Waypoint, and press ENTER.
A confirmation message appears.
Deleting a waypoint
3. Press ENTER to confirm.
To delete waypoints by symbol or category:
1. On the User sub tab, highlight the waypoint you want to
delete, and press MENU.
2. Highlight either 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 the waypoint.
Proximity Points
Use the Proximity sub tab to define an alarm circle around a stored
waypoint location. The alarm circle can help you avoid reefs,
rocks, or restricted waters. Up to 100 waypoints can be listed with
a maximum alarm radius of 99.99 nautical miles, statute miles, or
kilometers.
To delete waypoints by distance:
1. On the Points sub tab, highlight the waypoint to delete, and
press MENU.
2. Highlight Delete By Distance, and press ENTER.
3. Select Less Than or More Than, and then use the ROCKER
to enter the distance.
4. You can select a waypoint or point of interest as the From
location. Highlight the From field and press ENTER. From
the Find menu, select a location, and press ENTER. When
OK is highlighted, press ENTER.
5. Highlight Delete, and press ENTER to delete all waypoints
within the set location. Choose Cancel or press QUIT to exit
without deleting the waypoints.
GPSMAP 276C Owner’s Manual
Proximity Sub 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.
33
BASIC OPERATION IN MARINE MODE > CREATING AND USING WAYPOINTS
To turn proximity alarms on or off:
1. Press MENU twice to open the Main Menu.
2. Highlight the Points tab, and then highlight the Proximity
sub tab.
3. Use the ROCKER to highlight the Proximity Alarm field, and
press ENTER.
4. Select On or Off, and press ENTER.
To clear one or all proximity waypoints from the list:
1. Press MENU twice to open the Main Menu.
2. Select the Points tab, and then highlight the Proximity sub
tab.
3. Use the ROCKER to highlight the proximity waypoint to clear,
and press MENU.
To add a proximity waypoint:
1. From the Proximity sub tab, use the ROCKER to highlight
an empty line on the Proximity List, and press ENTER. The
Find menu appears.
2. Select a waypoint or point of interest from the Find menu.
With OK highlighted, press ENTER to select that point. (For
complete information about selecting waypoints or points of
interest from the Find Menu, see “Finding an Item” on page
16).
3. The distance field is now highlighted. Press ENTER to begin
entering the proximity radius.
4. Use the ROCKER to enter a distance value (up to 99.99
units), and press ENTER.
34
Proximity Points Tab Options Menu
4. To clear a single alarm, highlight Remove Point, and press
ENTER. To clear all proximity waypoints, select Remove All,
and press ENTER.
5. Use the ROCKER to highlight OK, and press ENTER to
confirm.
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 location for each point.
The track log starts recording as soon as the GPSMAP 276C gets
a location fix. For the best results, clear the track log before you
start traveling because when the track log is full, new track points
overwrite the oldest track points.
The percentage of memory used by the current track log appears at
the top of the Active tab. After the track log is cleared, it shows zero
percent. When the track log reaches 100%, the most recent track
points start to overwrite the least recent track points (if Wrap is
selected for Record Mode). To avoid losing track points, save the
track log when it approaches the 99% mark.
You must first save the track log before you can use the Navigate
Track feature. The Save feature allows you to store up to 15 track
logs from certain times and dates.
To access the Track tab:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to highlight the Track tab.
Track Tab
Setting Up and Saving Your Tracks
The Track tab contains the following settings:
Record Mode—Wrap records over the oldest tracks when the track
log reaches 100%. Fill records a track log until the track log is full
(100%). When Off is selected, the unit does not record tracks.
Interval—Distance records track points after a specified distance
has been traveled. Time creates track points after a specified time
has elapsed. Resolution records track points based on the resolution.
The higher the resolution entered, the more points the unit creates to
make the track.
Value—records a track according to the Interval and Value. Enter a
specific distance, time, or resolution.
Color—select a color for the track when it appears on the map.
GPSMAP 276C Owner’s Manual
35
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
To clear the track log:
1. Press MENU twice to open the Main Menu.
2. Highlight the Track tab, and highlight the Active sub tab.
3. Highlight the Clear button, and press ENTER. A confirmation
message appears.
To save a portion of the track log:
1. Press MENU twice to open the Main Menu.
2. Highlight the Track tab, and highlight the Active sub tab.
3. Use the ROCKER to select Save, and press ENTER.
4. To save only a portion of the track, highlight No, and press
ENTER when a message appears.
5. Select a beginning point, and press ENTER.
6. Select an ending point, and press ENTER. The Track Review
Page automatically opens.
Clearing the track log
4. Highlight OK, and press ENTER.
5. Press QUIT to exit.
To save the entire track log:
1. Press MENU twice to open the Main Menu.
2. Highlight the Track tab, and then highlight the Active sub
tab.
3. Select Save, and press ENTER. A message appears asking
if you want to save the entire track.
4. To save the entire track, highlight Yes, and press ENTER.
36
Saving a portion of the track log
7. Highlight OK and press ENTER to save the track.
8. Press QUIT to exit.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
Saved Tracks
The Saved sub tab shows all of the saved tracks in your unit.
Saved Sub Tab
Press MENU to open the Saved tab options menu:
Review on Map—shows the highlighted track on the Map Page.
TracBack—navigates the track. You can either navigate the track as
it is saved, or you can navigate the track in reverse.
Delete Track—erases the highlighted track from the unit’s memory.
Delete All—erases all tracks from the unit’s memory.
To edit a track:
1. Press MENU twice to open the Main Menu.
2. Highlight the Track tab. Press right on the ROCKER to
highlight the Saved sub tab.
GPSMAP 276C Owner’s Manual
3. Highlight the track you want to edit, and press ENTER. The
Track Review Page opens. Make changes as needed.
Track Review Page
4. Highlight the Name field, and press ENTER. Use the
ROCKER to change the name, and press ENTER.
5. Select a different display color when the track appears on the
map.
6. To show this track on the map, highlight the box next to
Show on Map, and press ENTER.
7. To begin a TracBack, highlight TracBack, and press ENTER.
For more information about the TracBack feature, see the
next page.
8. To view the track on the map, highlight Map, and press
ENTER. Press QUIT to return to the Track tab.
9. Highlight OK, and press ENTER to save the track. Press
QUIT to exit.
37
BASIC OPERATION IN MARINE MODE > MANAGING YOUR TRACKS
Navigating a Saved Track
You can save your track log to use later as a TracBack, which
reduces your track log into a route with up to 300 turns. When
initiated, a TracBack route leads you back to the oldest stored track
log point. It is a good idea to clear the existing track log before you
start your current trip. Also, you must save an active track log before
you can navigate it as a TracBack.
To activate a TracBack using the NAV 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 to select the point you want to navigate to
(TracBack to), and press ENTER.
38
TracBack Tips
When a TracBack is initiated, the GPSMAP 276C divides the track
into segments called legs. Up to 300 temporary turns are created to
mark the most significant features of the track in order to duplicate
your exact path as closely as possible. To get the most out of the
TracBack feature, remember these tips:
• Always clear the 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 sub tab must be set to
Fill or Wrap.
• If the track log Interval option on the Active sub tab is set to
the Time option, the route might not navigate your exact path
(keep the interval set to Resolution for best performance).
• 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 might not mark your path accurately.
The receiver then uses the most significant points of your
track so there will be fewer changes in direction.
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 41.
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
the “Compass Page” section beginning on page 47.
GPSMAP 276C Owner’s Manual
Whenever a route is initiated, the Highway Page provides digital
and graphic steering guidance to the destination. A compass ribbon
appears at the top of the page to show your current heading,
represented by the violet bar. The red vertical bar represents the
bearing to your course. To stay on course, steer towards the red
vertical indicator (or arrows) until it lines up with the violet bar
in the middle. The bottom section of the screen provides visual
guidance to the waypoint on a graphic highway display. The line
down the center of the highway represents your desired track line.
For more information, see the “Highway Page” section beginning on
page 50.
39
BASIC OPERATION IN MARINE MODE > FOLLOWING A MARINE ROUTE
See Your Progress on the Active Route Page
When you initiate a route in Marine Mode, the Active Route Page
shows each point (waypoint or map item) of the active route, as
well as the point name, course, distance, and several other fields of
information. The active point is marked with an arrow icon. As you
navigate a route, the list automatically updates to indicate the next
active point.
For more information, see the “Active Route Page” section
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 appears at the top of the page to show your current
heading with a red, vertical bar. To stay on course, steer toward the
violet bar (or arrows) until it is aligned with the red bar.
For more information, see the “Position Data Page” section
beginning on page 53.
Position Data Page
Active Goto (Route) Page
40
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, and some additional marine features,
including 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 shows map
information (digital cartography) that includes navaids, lakes, rivers,
coastlines, cities, and highways. Use the dedicated zoom keys (IN
and OUT) to adjust the Map Page scale.
Two map operating modes, position mode and pan mode, determine
what cartography is shown on the map display. Position mode
pans the map to keep your present location in the display area.
The position marker shows your travel on the Map Page. The
GPSMAP 276C always turns on in position mode, with the last
known location centered on the map. When you press the ROCKER,
the GPSMAP 276C enters pan mode, which moves the map to keep
the white arrow (map pointer) within the display area.
The system has a built-in worldwide database, with more detailed
coverage available through the use of the BlueChart or MapSource
data. The GPSMAP 276C displays cartography as long as chart
information is available for the zoom scale you selected.
GPSMAP 276C Owner’s Manual
Data fields
Current
location
Map Page
Map scale
Changing the Page Layout and Data Fields
You can adjust how the following pages appear: Map, Compass,
Highway, Position Data, Trip Computer, and optional Sonar Page.
You can also adjust the data fields on each page.
To set up the page layout:
1. Press PAGE to display the page you want to change.
2. Press MENU to open the options menu.
3. Highlight Set Up Page Layout, and press ENTER.
41
MARINE MODE PAGES AND FEATURES > MAP PAGE
4. Select an option, and press ENTER. The options vary
between the three usage modes and the page you are
setting up.
Changing a data field
Selecting the page layout
To change a data field display:
Press PAGE to open 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 to highlight the type of
data you want to show, and press ENTER.
6. Press QUIT to exit.
1.
2.
3.
4.
42
Setting Up the Map Page
Use the Set Up Map option to adjust how items appear on the Map
Page.
To change a map setup option:
1. On the Map Page, press MENU to open the options menu.
2. Highlight Set Up Map, and press ENTER.
3. Press left or right on the ROCKER to highlight a tab; press
up or down on the ROCKER to highlight to the field you want
to change, and press ENTER.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > MAP PAGE
Map Family
highlighted.
Press ENTER
to view the
individual maps
in the family.
Setting up the Map Page
4. Press up or down on the ROCKER to highlight a setting, and
press ENTER.
5. Press PAGE or QUIT to exit.
Additional Map Data
You can view the data currently loaded on your GPSMAP 276C unit
and data card.
Map Information Page
3. To change the setting for a map family, highlight the box next
to the map family name and press ENTER to select (check
mark) or deselect (no check mark) the Show setting.
4. To view the list of maps within a map family, highlight the
name of the map family, and press ENTER.
To review/change map information:
1. On the Map Page, press MENU.
2. Highlight Map Information, and press ENTER. The first
page shows the Map Families stored on the data card and
unit and whether they are shown on the Map Page.
Individual Map Information Page
Showing the individual maps that are in the selected map family
GPSMAP 276C Owner’s Manual
43
MARINE MODE PAGES AND FEATURES > MAP PAGE
5. To view detailed information about an individual map,
highlight the map name, and press ENTER. Highlight OK,
and press ENTER to exit the Map Information page.
6. To select or deselect individual maps for display on the Map
Page, highlight the box next to the map you want, and press
ENTER to check or uncheck the Show box.
Or
Press MENU, select one of the options (Show All, Hide All,
or Show Defaults), and press ENTER.
7. Press QUIT to exit the Map Information page.
Map Orientation
There are three map orientation options: North Up orients the map
like a paper map. Track Up orients the map in the direction of
travel. Course Up orients the map so the direction of navigation is
always up. When using Track Up or Course Up, the North arrow
indicates the orientation.
To change the map orientation:
1. On the Map Page, press MENU to open the options menu.
2. Select Set Up Map, and press ENTER.
3. Select the map orientation in the Orientation field on the
General tab.
44
Zooming In and Out of the Map
The map display has 28 available zoom ranges from 20 ft to 800 nm
(20 ft to 800 mi or 5 m to 1200 km). The map scale is controlled by
the IN and OUT keys, with the current scale shown at the bottom
right of the data window.
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 shows cartography as long as chart
information is available for the zoom scale you selected.
Map coverage conforms to the following conditions:
• Cartography is shown when the selected zoom range is
covered by either the internal basemap or other MapSource
data loaded onto a data card.
• When the selected zoom range is covered by both the internal
database and data card map information, the cartography with
the best resolution appears.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > MAP PAGE
• When the selected zoom range exceeds the resolution of the
data in use, “overzoom” appears below the map scale.
No additional data is available
• When external data (such as MapSource data) is used, “map
card” appears below the map scale.
Using detailed maps loaded on the data card
Panning the Map
The panning arrow allows you to pan the map to view other
map areas. As you pan past the edge of the current map display, the
screen moves to provide continuous map coverage. The position
icon stays in your present location and might not be visible on the
display screen when you pan the map.
To pan the map:
Press up, down, right, or left on the ROCKER. The panning
arrow moves the map so you can view different parts of the
map.
GPSMAP 276C Owner’s Manual
Panning Arrow
data window:
Shows the
distance and
bearing from
your present
location and
arrow’s position
coordinates.
Map feature
highlighted
Panning the Map
As you move the arrow, the distance and bearing from your present
location to the arrow appears in the data window, along with the
arrow’s position coordinates. When you zoom in pan mode, the
arrow stays centered on the screen. When the arrow is stationary,
fixed coordinates appear in the position field, and the distance and
bearing from your present location update as you move.
To re-center your position on the screen:
When you are finished panning the map, press QUIT. The
map automatically moves to show your present location, and
the unit returns to position mode.
You can also use the arrow to select on-screen map items, which
allows you to review a selected item directly from the map display.
45
MARINE MODE PAGES AND FEATURES > MAP PAGE
To view details about an on-screen point:
1. Use the ROCKER to move the arrow to a waypoint or map
item. If there are several items grouped closely together,
zoom in closer for a better view.
When a waypoint or map item is selected, it is highlighted onscreen with the name and location shown at the top of the
screen, along with the distance and bearing from your current
location, as shown in the image to the left.
2. Press ENTER to view more information about the point. The
information and on-screen buttons shown vary depending
on the type of item selected. In some cases, additional
information tabs appear at the top of the Information Page or
Waypoint Page.
3. Use the ROCKER to highlight the extra tabs and view the
information.
4. Select an on-screen button, and press ENTER.
5. Press QUIT to exit the information page.
46
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 declutter the Map Page:
1. On the Map Page, press MENU to open the options menu.
2. Highlight Declutter, and press ENTER.
3. Press ENTER again to restore the detail to the map display.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > COMPASS PAGE
Measuring Distance
You can measure the distance and bearing between two map items.
To measure the bearing/distance between two points:
1. On the Map Page, press MENU to open the options menu.
2. Highlight Measure Distance, and press ENTER. An onscreen arrow appears on the map display at your present
location with ENT REF below it.
3. Move the arrow to the reference point (the starting point that
you want to measure from), and press ENTER. A push pin
icon marks the starting point on the map display.
End point of
measurement,
labeled ENT
REF
Push pin
indicating the
beginning
point of the
measurement
Measure Distance
4. Move the arrow to the point want to measure to. The bearing
and distance from the reference point and arrow coordinates
appear in the data window at the top of the display.
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
Course to steer
indicator
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 course to steer “bug” on the outside of the compass ring. The
course to steer represents the direction to steer to get back to the
course line.
5. Press QUIT to finish.
GPSMAP 276C Owner’s Manual
47
MARINE MODE PAGES AND FEATURES > COMPASS PAGE
If the arrow points up, you are going directly to the waypoint. If the
arrow points any direction other than up, turn toward the arrow until
it points up, and then continue in that direction.
NOTE: You must be moving for the compass to accurately
update and show your heading.
Turning On the Compass Page
The Compass Page is on by default in Marine Mode but off by
default in Automotive Mode.
To show the Compass Page in Automotive Mode:
1.
2.
3.
4.
Press MENU twice to open the Main Menu.
Use the ROCKER to highlight the Display tab.
Highlight the Compass Page field, and press ENTER.
Select On, and press ENTER.
Turning on the Compass Page
48
Compass Page Options
Use the options menu on the Compass Page to customize the
Compass Page to your preferences. Like the Map Page, the Compass
Page features user-selectable data fields. For definitions of data field
options, see to page 116. When the Compass Page is open, press
MENU to open the options menu.
Show Course Pointer/Show Compass—toggles between showing
the Course Pointer, which shows how far off you are from your
course and how to get back on course, or shows the compass arrow.
The Course Pointer is also referred to as a CDI or Course Deviation
Indictor.
Show (Hide) Bug Indicator—shows the course to steer bug
indicator (the purple tick mark on the compass ring).
Using the Marine Timer
The Marine Timer, specifically designed for sail boat racing, allows
you to easily count up or down by specified time increments. As
is common in sail boat racing, there is often a 5-minute warning
countdown, followed by a 4-minute preparation countdown, and
finally a one-minute final countdown. Then during the race, mariners
might want to count up to keep track of their time. By default, all of
these different count downs and count ups can easily be performed
with the GPSMAP 276C by pressing a few buttons.
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > COMPASS PAGE
You must change the Compass Page layout to use the Marine Timer.
To open the Marine Timer:
1. Press PAGE repeatedly until the Compass Page appears.
2. Press MENU.
3. Use the ROCKER to highlight Set Up Page Layout and
press ENTER.
4. Highlight 2 Columns With Timer, and press ENTER. The
Marine Timer appears in the lower right corner.
Marine Timer on the Compass Page
As discussed previously, the timer is set to count down five minutes.
If you want to change the length of time and the behavior or the
timer, open the Timers Setup tab on the Main Menu.
NOTE: You can set the timer countdown for up to 60 minutes.
To set the Marine Timer:
To use the Marine Timer:
1. Press the ROCKER up or down to select the time you want
to count. Five (5) minutes is the default.
2. Press ENTER to start the timer. Use the ROCKER during the
timing to quickly select a different length of time.
3. Press ENTER to stop timing.
GPSMAP 276C Owner’s Manual
1. Press MENU twice to open the Main Menu.
2. Press down on the ROCKER to select the Setup tab, and
then left to select the Timers sub tab.
3. Highlight Stop next to Marine to change the timer’s behavior.
4. Highlight the time field, press ENTER, and then use the
ROCKER to enter a new time.
49
MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE
Highway Page
To hide or show the Highway Page:
The Highway Page is available in both Marine Mode and
Automotive Mode, though it is not shown by default in Automotive
Mode. Press PAGE repeatedly to open the Highway Page.
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Display tab.
3. Highlight the Highway Page field, and press ENTER.
4. Select Off to hide or On to show, and press ENTER.
Using the Highway Page
To stay on course, steer toward the violet bar (or arrows) until
it lines up with the red bar in the middle. The bottom section of
the screen provides visual guidance to the waypoint on a graphic
highway display. The line down the center of the highway represents
your desired track line.
Highway Page
When you are navigating, the Highway Page provides digital and
graphic steering guidance to the destination. The right side of the
Highway Page features user-selectable data fields showing useful
navigation information. A compass ribbon appears at the top of
the page to show your current heading. The violet bar and the red
vertical bar on the compass ribbon indicates the bearing to your
course.
As you head toward your destination, the highway perspective
moves to indicate your progress to the waypoint and which direction
you should steer to stay on course. If you are navigating a route, the
Highway Page shows each route waypoint in sequence connected
by a black “road” with a white line down the middle, which is your
desired track line. Nearby waypoints not in the active route can also
be shown. You can zoom in or out to display a larger or smaller view
of the highway.
To change the highway perspective scale:
Press IN to zoom in; press OUT to zoom out.
50
GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > HIGHWAY PAGE
Highway Page Options
Use the Highway Page options menu to define the data fields and
select which waypoints and tracks appear on the screen. The data
fields, located along the right side of the page, provide various types
of useful data. You can customize the layout to show additional data
fields.
To display and select the Highway Page Options:
1. Press PAGE repeatedly until the Highway Page appears.
2. Press MENU.
3. Use the ROCKER to highlight an option, and press ENTER.
The following options are available from the Highway Page options
menu:
Set Up Page Layout—choose the number of data fields that appear
on the Highway Page.
Change Data Fields—specify the type of data shown in each data
field on the Highway Page. This option is available from any of the
main pages. See page 116 of the “Appendix” for a listing of the data
fields.
Set Up Highway—shows an options menu with two tabs: Line and
Waypoint. Each tab has on/off settings for several options, such as
enabling the line for the Active Leg and Track Log.
Highway Page Options Menu
Set Up Highway
GPSMAP 276C Owner’s Manual
51
MARINE MODE PAGES AND FEATURES > ACTIVE ROUTE PAGE
Active Route Page
When you initiate a route in the GPSMAP 276C, the Active Route
Page shows each point (waypoint or map item) of the active route,
with the point name, Course, Distance, and several other fields
of information. The current destination point, the active point,
is marked with an arrow icon. As you navigate a route, the list
automatically updates to indicate the next active point. The Active
Route and Route Review Pages share many of the same features and
options.
Press PAGE repeatedly to open the Active Route Page.
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 22.
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
shown on the Active Route Page.
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GPSMAP 276C Owner’s Manual
MARINE MODE PAGES AND FEATURES > POSITION DATA PAGE
Position Data Page
The Position Data Page shows important navigation data while
navigating a route in Marine Mode. By default, the page shows a
compass ribbon, your current latitude and longitude, the current date
and time, your location in relation to a prominent nearby landmark
such as a waypoint or city, and eight user-selectable data fields. The
compass ribbon appears at the top of the page to show your current
heading with a red, vertical bar. To stay on course, steer toward the
violet bar (or arrows) until it is aligned with the red bar.
Press PAGE repeatedly to open the Position Data Page.
Position Data Page Options
With the Position Data page open, press MENU to open the options
menu. You can customize the layout of the page and change the
data fields. For an explanation of the data fields, see page 116 in the
“Appendix.” You can also select one of the following options:
Change Nearest Type—allows you to specify the type of item to
be used as the nearest item (shown in the lower-left data field). The
choices change based on the current Usage Mode.
Reset Trip—clears trip information, except the maximum speed and
the odometer.
Reset Max Speed—clears the maximum speed.
Reset Odometer—clears the running total of the distance traveled
since the odometer was last reset.
Your present location
is 5.6 nm west of
Coronado, CA
Reset All—clears all trip information including the maximum speed
and odometer.
Position Data Page
GPSMAP 276C Owner’s Manual
53
BASIC OPERATION IN AUTOMOTIVE MODE > AUTOMOTIVE MODE PAGE SEQUENCE
BASIC OPERATION IN AUTOMOTIVE MODE
This section discusses some of the more common Automotive operations you will perform with your GPSMAP 276C in Automotive Mode.
Please note that many common operations, such as marking a waypoint and creating a route, are performed the same way as in Marine Mode.
See the Marine Mode sections for operations and information not found in this section.
Automotive Mode Page Sequence
Automotive Mode features two main pages: Map and Trip Computer. Optional Highway and Compass Pages can be turned on in Automotive
Mode. Two additional pages appear during active navigation while in Automotive Mode—a Current Route Page appears if you are navigating
a turn-by-turn route and an Active Route Page appears if you are navigating off road. See “Navigating in Automotive Mode” on the next page
for more information.
Map Page
Compass Page
(Optional)
Highway Page
(Optional)
Current Route Page
Trip Computer Page
To switch usage modes:
1. Press and hold the PAGE key.
2. Use the ROCKER to select either Automotive or Marine, and press ENTER.
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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.
When you are actively navigating, you will see a magenta line that
always runs from your current location to your destination or to the
next turn on the Map Page. You can use the Map Page, Compass
Page, Highway Page, and Position Data Page to help navigate to
your destination.
To go to a highlighted map item:
1. Use the ROCKER to highlight the item you want 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.
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BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE
To create a new route:
1. Press NAV to open the Navigate menu.
2. Highlight New Route, and press ENTER.
3. From the Find menu, highlight Waypoints, and press
ENTER. (You can also choose to go to other points, such as
Cities or Exits from this list. The steps vary only slightly from
those listed for waypoints.)
4. Select a waypoint from the list, and press ENTER to open the
Waypoint Review Page.
Waypoint Review Page
Activating a Go To using the Find menu
5. Highlight the Go To button, and press ENTER to begin
navigation.
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To go to a destination using the Find menu:
1. Press FIND to open the Find menu.
2. Using the ROCKER, highlight a category, such as Cities,
and press ENTER.
3. Press ENTER, and use the ROCKER to begin entering the
letters contained in the item name. The list begins to sort by
the items which contain the letters you are entering. Press
ENTER when finished.
3. Highlight the item you want from the list, and press ENTER.
4. Highlight the Go To button, and press ENTER.
For complete information about finding an item, see the “Finding an
Item” section on page 16.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN AUTOMOTIVE MODE > NAVIGATING IN AUTOMOTIVE MODE
Following a Saved Route
Use the Navigate menu to follow a saved track or route. If you want
to follow roads on your route, press MENU, and select Follow
Roads on the Active Route Page.
To follow a saved route in Automotive Mode:
1. Press NAV to open the Navigate menu.
2. Highlight Navigate Route, and press ENTER.
3. Highlight the route you want to navigate, and press ENTER.
The Active Route Page automatically opens with the route
activated.
4. Press MENU to open the options menu.
5. Highlight Follow Roads, and press ENTER to create a
turn-by-turn route (auto-route), which appears on the Current
Route Page.
You can also initiate a saved route from the Route tab on 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 NAV.
2. Use the ROCKER to highlight Stop Navigation, and press
ENTER.
Navigate Menu in Automotive Mode
To resume navigation:
1. Press NAV.
2. Use the ROCKER to highlight Resume Navigation, and
press ENTER.
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BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE
Editing Your Route
When you are navigating a route, you can edit that route. You can
add areas and roads to avoid as well as temporary detours to your
current route. You can also add stops along your trip, called Via
Points.
6. Move the arrow to the end point, and press ENTER. During
route calculation and navigation, the GPSMAP 276C avoids
the area within the box or the selected area of the road.
While navigating, press NAV to open the Navigate menu.
Entering Custom Avoids
Custom avoids allows you to enter specific areas and roads that you
want to avoid in your navigation. Custom avoids apply to all routes,
but detours apply to only the active route. You can add custom
avoids while you are navigating a route or before you navigate.
To enter a custom avoid:
1. Press NAV while navigating to a destination in Automotive
Mode.
Or
Open the Map Page, and press MENU.
2. Select Custom Avoids, and press ENTER.
3. Press ENTER when the Add Avoid button is highlighted.
4. Select Avoid Road or Avoid Area, and press ENTER.
5. Use the ROCKER to move the arrow to the first point in the
avoidance area. Press ENTER to select the first point.
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The selected roads are avoided.
7. When finished, highlight the OK button, and press ENTER.
Creating a Detour
If there is road construction or some other form of a detour while
navigating a route, you can have your GPSMAP 276C create a
detour route for you.
To create a detour:
1. While navigating a course, press NAV.
2. Select Detour from the Navigate menu.
3. Select a distance, and press ENTER. The GPSMAP 276C
will recalculate your course based on your detour distance.
GPSMAP 276C Owner’s Manual
BASIC OPERATION IN AUTOMOTIVE MODE > EDITING YOUR ROUTE
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 NAV to open the Navigate
menu.
2. Use the ROCKER to select Edit Vias, and press ENTER.
The Add/Edit Vias window opens.
3. Highlight Add Via Point, and press ENTER.
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 to select an item
on the map, and press ENTER.
If you selected Use Find Menu, select an item from the Find
menu as discussed in the “Finding an Item” beginning on
page 16. Remember you can press MENU while the Find
menu is open to find an item near another location, such
as the destination. The new point is added to the route as
shown on the Add/Edit Vias Page.
6. Repeat steps 3 through 5 until you have added all of the Via
Points that you want. Highlight Done, and press ENTER to
apply the new Via Points to the route.
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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 shown in the
top bar on the Map Page.
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 initiated a turn-by-turn route in the GPSMAP
276C set in Automotive Mode, the Current Route Page shows each
turn of the active route.
Next turn
Current Route Page
Map Page showing your route.
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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, see the “Marine Mode Pages and Features” section.
Map Page
See page 41 in the “Marine Mode Pages and Features” section for
more information 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 show
any one of the possible data options. The top of the screen shows the
GPS status or the route leg. You can also add data fields to the page
or select a full-screen map without data fields.
Press the zoom keys (IN and OUT) to change the map scale. Some
items on the map appear only if the map is zoomed in to a certain
level.
• Press ENTER to quickly declutter (remove unwanted items)
from the Map Page.
• Press MENU to open the options menu for the Map Page.
• Show and hide the heading line from the options menu.
• Use the ROCKER to measure the distance between two
objects on the map.
• Change the page layout and data fields to customize the Map
Page.
Data fields
Current
location
Map scale
Map Page
GPSMAP 276C Owner’s Manual
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AUTOMOTIVE MODE PAGES AND FEATURES > CURRENT ROUTE PAGE
Current Route Page
Whenever you activate a route in the GPSMAP 276C in Automotive
Mode, the Active Route Page shows each turn of the active route,
with the distance to the turn, the street name, and estimated time
to arrival and time of arrival. As you navigate a route, the turn list
automatically updates to indicate the next turn at the top of the list.
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 show similar information using a different layout. The
Next Turn Page shows your next turn on a map.
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GPSMAP 276C Owner’s Manual
AUTOMOTIVE MODE PAGES AND FEATURES > TRIP COMPUTER PAGE
Trip Computer Page
The Trip Computer Page shows important data while navigating a
route in Automotive Mode. It indicates your current speed and other
helpful data about your trip, such as average speed and moving time.
Trip Computer Page
Reset the Trip Computer before beginning a trip. If you make
frequent stops, leave the GPSMAP 276C turned on in order to
receive satellites. This allows the unit to accurately measure elapsed
time during the trip.
Trip Computer Page Options Menu
The following options are available from the Trip Computer options
menu. Some options are only available if you have changed the page
layout. Press MENU to open the options menu. Highlight an option,
and press ENTER.
Trip Computer Page Options Menu
Set Up Page Layout—allows you to choose the layout and number
of data fields. You can change the layout of the Trip Computer Page
to the Dashboard layout while still in Automotive Mode. Then you
change the data fields on the Dashboard while in Automotive Mode.
Select the Reset options to reset the maximum speed, the odometer,
everything but the max speed and odometer, or reset everything in
the trip computer.
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MAIN MENU > GPS TAB
MAIN MENU
The Main Menu on the GPSMAP 276C provides access to various
waypoint, system, navigation and interface management, and setup
menus. The Main Menu is accessible from any page by pressing the
MENU key twice.
Main Menu
GPS Tab
The GPS tab provides a visual reference of satellite acquisition,
receiver status, and accuracy. The sky view and signal strength bars
give an indication of what satellites are visible to the receiver and
whether they are being tracked. For more information about GPS,
see pages 4-6.
Main Menu—GPS Tab
To select a tab from the Main Menu:
1. From any page, press MENU twice to open the Main Menu.
2. Press up or down on the ROCKER to highlight the tab you
want. The information for the highlighted tab automatically
appears on the right. To highlight a sub tab, press left or
right on the ROCKER, and then press up or down to select
individual fields.
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GPSMAP 276C Owner’s Manual
MAIN MENU > ROUTE AND POINTS TAB
Route Tab
Use the Route tab create and store up to 50 reversible routes, with
up to 300 points each. See the “Creating and Using Routes” section
beginning on page 19 for more information about routes.
Points Tab
The Points tab contains two sub tabs, User and Proximity, which
allow you to manage a large number of waypoints quickly and
efficiently. For more information about waypoints, see the “Creating
and Using Waypoints” section beginning on page 24.
Main Menu—Route Tab
Main Menu—Points Tab
User Sub Tab
The User sub tab shows a master list of all waypoints currently
stored in memory. The total number of stored and available
waypoints appears at the bottom of the User sub tab.
Proximity Sub Tab
Use the Proximity sub tab to define an alarm circle around a stored
waypoint location.
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65
MAIN MENU > TRACK TAB AND DSC TAB
Track Tab
Use the Track tab to specify whether or not to record a track log,
define how it is recorded, or save the track log data for future use.
The Track tab is divided into two sub tabs: Active and Saved. For
more information about tracks, see the “Managing Your Tracks”
section beginning on page 35.
DSC Tab
The DSC tab (Marine Mode only) allows you to control and set up
the Digital Selective Calling (DSC) features on the GPSMAP 276C.
DSC uses marine VHF radio and GPS technologies to transmit and
receive location information. DSC is used by mariners for two major
operations: distress calls and position reporting.
For more information about DSC and Maritime Mobile Service
Identity (MMSI) numbers, see pages 127-128 in the “Appendix”.
Main Menu—Track Tab
Active Sub Tab
The Active sub tab is for the active log (the log currently being
recorded.) It shows the amount of track memory used and current
settings.
DSC Page
Saved Sub Tab
The Saved sub tab shows a list of all saved tracks in your unit.
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GPSMAP 276C Owner’s Manual
MAIN MENU > DSC TAB
Understanding Distress Calls
With your GPSMAP 276C properly connected to a VHF radio with
DSC output, you can receive any DSC distress call within range.
An alert message appears and a tone sounds when a distress call is
received. The alarm only sounds on a distress call; position reports
do not sound the alarm. Distress calls are broadcast to all DSC users
in radio range and appear with a blue and white checkered icon on
the DSC Call List and Log tabs.
You can enter a caller’s name, if it is known. The caller’s name
replaces the MMSI number as a reference once entered.
Each entry in the Call List and Log has a corresponding DSC Entry
Review Page. This page operates similarly to the Distress Page and
Position Report Page. From the DSC Entry Review, you can Delete
the entry, Save it as a waypoint, or show the location on the map.
To review a call or log entry:
1. Open the Call List or Log from the DSC tab.
2. Press up or down on the ROCKER to highlight the call you
want to review.
3. Press ENTER to open the DSC Entry Review Page.
Understanding Position Reports
The Position Report operates similarly to the distress call. This type
of contact is like a phone call; no emergency alarms are set off.
Position reports are not broadcast to all DSC users and appear with a
gold boat icon.
Receiving DSC Calls
Each time you receive a distress call or position report, a review
page opens—either a DSC Position Report Page or a Distress Call
Page. Both pages contain identical fields to the DSC Entry Review
Page.
GPSMAP 276C Owner’s Manual
DSC Entry Review Page
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MAIN MENU > DSC TAB
DSC Call List
The Call List shows the 50 most recent calls, even if the unit is left
unattended. The Call List only shows the most recent call from a
vessel. If a second call is received, it replaces the first call in the Call
List. Press MENU to sort the list and delete entries.
DSC Log
Receiving a Position Report or Distress Call
DSC Call List
DSC Log
When DSC calls are received, they are automatically stored in the
Log, with the latest call at the top. The unit can store up to 100 calls;
after 100 calls are received, the oldest log file is removed when a
new call is received. Press MENU to sort the list and delete entries.
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After you receive a Position Report or a Distress Call, you can
quickly navigate to the location. Highlight a call from the Call List
or Log and press Direct To. The top selection in the Navigate Menu
is highlighted. Press ENTER to go to the location.
DSC 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.
GPSMAP 276C Owner’s Manual
MAIN MENU > DSC TAB
DSC Directory
entries. Press
ENTER to
open the entry
review page.
Blank entry.
Press ENTER
to add a DSC
Directory entry.
DSC Directory list
To add a new DSC Directory entry:
1. Open the DSC Directory on the Main Menu.
2. Use the ROCKER to highlight the first blank space in the
directory list, and press ENTER.
Or
Press MENU, highlight New Item, and press ENTER.
3. Enter the MMSI number, the name, and any comments.
4. When finished, highlight OK, and press ENTER.
Enter the
MMSI number,
name, and a
comment (if
needed) 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 appears under the corresponding MMSI number.
Another way to input a name is from the Entry Review Page or the
DSC Distress Call or DSC Position Report pages. The Name and
MMSI are sent to other Garmin GPS units: Only the MMSI numbers
are sent to other non-Garmin DSC users.
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
69
MAIN MENU > SONAR TAB
Setting Up DSC
Use the Setup sub tab to turn DSC on and off. If you have more
than one chartplotter and only want DSC to display on another
chartplotter, turn DSC off on this unit.
Sonar Tab
The Sonar tab contains options for the Sonar Page. See the “Setting
Up and Using Sonar” section beginning on page 89 for more
information about Sonar setup options.
This Setup sub tab also allows you to simulate Distress Calls and
Position Reports while the unit is in Simulator Mode (see page 11).
Simulating calls is helpful for practice before connecting to the real
system. The Distress Call simulator also helps to check if alarms are
working properly.
Main Menu—Sonar Tab
DSC Setup
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GPSMAP 276C Owner’s Manual
MAIN MENU > ALARMS TAB
Alarms Tab
To set a persistent alarm:
Use the Alarms tab to define alarm settings. When an alarm goes off,
the alarm message appears on the display and the unit emits five (5)
beeps. When you set an alarm to be persistent, the alarm message
appears on the display and the unit beeps until you press ENTER to
acknowledge the alarm.
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Alarms tab.
3. Highlight the box next to the alarm you want to make
persistent (for example, Next Turn).
4. Press ENTER to place a check mark in the Persist box.
When an alarm goes off, it sounds until you acknowledge the
alarm message by pressing ENTER.
Navigation (Nav) Alarms
The Nav sub tab contains the following alarms:
Main Menu—Alarms tab
To set an alarm:
1.
2.
3.
4.
Press MENU twice to open the Main Menu.
Use the ROCKER to select the Alarms tab.
Highlight the alarm name to set, and press ENTER.
Change the setting to On (or the setting you want, where
available), and press ENTER. If necessary, highlight the next
field to the right, and press ENTER, specify the settings you
want, and press ENTER to finish.
GPSMAP 276C Owner’s Manual
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.
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.
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MAIN MENU > ALARMS TAB
Off Course—sets an alarm to sound when off your desired course.
Select On, then enter a distance.
Sonar Alarms
Anchor Drag—sets an alarm to sound when you exceed a specified
drift distance. Select On, and then enter a distance.
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.
System Alarms
The System sub tab contains the following 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.
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The Sonar sub tab contains the following alarms:
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 exceeded a specified drift
distance. Select On and then enter a specific distance.
Fish—sets an alarm to sound when fish are detected with sonar.
GPSMAP 276C Owner’s Manual
MAIN MENU > CALENDAR TAB
Calendar Tab
Use the Calendar tab to plan trips, view sun and moon, and hunting
and fishing information for the day.
Highlight an arrow, and press ENTER to change the date in the view.
3. Press MENU to open 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.
Day View Sub Tab
Sunrise and set
times for the
current location
and date.
List of points
and routes
added to this
date.
Calendar Tab in Day View
Calendar Options
The options menu is available in all three calendar views. Press
MENU on any of the calendar views to open the options menu. To
view the Sun & Moon Information or Hunt & Fish sub tab, highlight
View Sun and Moon or View Hunt and Fish, and press ENTER.
To add a route (or point) to the calendar:
1. Press MENU twice to open the Main Menu.
2. Highlight the Calendar tab. The current day appears on the
Day View sub tab.
GPSMAP 276C Owner’s Manual
The Day View sub tab shows sunrise and sunset times for your
current date and location. A list of points and routes for the day
appear in a list, as shown to the left. You can select a different date
by highlighting an arrow and pressing ENTER. Press MENU to
display the options menu.
Week View Sub Tab
The Week View sub tab provides many of the same elements as Day
view, but the entire week is visible. Days with points or routes added
to them are shown highlighted in green. Icons for the points and
routes assigned to the date are shown along the bottom of the screen.
Month View Sub Tab
The Month View sub tab provides many of the same elements as
Day view, but the entire month is visible. Days with points or routes
added to them are shown highlighted in green. Icons for the points
and routes assigned to the date are shown along the bottom of the
screen.
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MAIN MENU > CELESTIAL TAB
Celestial Tab
The Celestial tab shows tide information, sun and moon information,
and hunting and fishing information. You can view this data for your
current location, a location from the map, or a waypoint location.
Also, you can select a different date and time, or use the current
data.
Tide Sub Tab
The Tide sub tab contains a graphical chart that shows tide station
information in a 24-hour span starting at midnight station time. You
can choose from different dates and more than 3,000 tide stations.
Enter the date for which you want to
view the tide information.
Select the tide station for which you
want to view the information.
Time
Height of tide
Main Menu—Celestial Tab
To access the Celestial tab:
1. Press MENU twice to open the Main Menu.
2. Highlight the Celestial tab.
3. Use the ROCKER to view the sub tab you want, such as
Sun & Moon.
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Smallest and
largest tides
for the AM
hours
Tide Sub Tab
Smallest and
largest tides
for the PM
hours
The top of the page shows the tide station and date being referenced.
The chart shows a 24-hour block of time, with the time progressing
from left to right. The solid vertical lines represent 4-hour
increments; the dotted vertical lines represent 1-hour increments.
The tide curve appears as a shaded area; higher tides are taller and
lower tides are shorter. The bottom of the page indicates the times
with the highest and lowest tides.
GPSMAP 276C Owner’s Manual
MAIN MENU > CELESTIAL TAB
To view a tide chart for a different tide station:
1. From the Tide sub tab, highlight the At field, and press
ENTER. The Find menu opens showing the tide stations.
2. Press MENU, and select Near Current Location, Near
Current Route, Near Other (select another location using
the map), or Near Destination. The list is updated with your
search requirements.
3. Select a tide station from the list, and press ENTER. The
Tide Station Information Page appears.
4. Highlight OK, and press ENTER. The Tide tab appears again
showing the tide chart for the selected tide station.
To view the tide chart for another date:
1. From the Tide sub tab with a chart open, highlight the On
field, and press ENTER.
2. ENTER the date with the ROCKER, and press ENTER. You
can also use the zoom IN and OUT keys to view information
for another date. Press and hold IN or OUT to scroll quickly
through dates.
3. Press ENTER when finished. The unit shows the chart for the
date you entered or selected.
To view a chart’s details for another time during the
day (other than current time):
1. From the Tide sub tab with the chart you want to view, press
MENU, and then select Move Cursor.
2. Press the ROCKER right or left to view the chart at another
time.
3. To return to the current time, press MENU, and select Stop
Moving Cursor.
To automatically start cursor mode to scroll the chart:
1. Use the ROCKER to highlight the Date field. Then press
down to start the pointer (pan) mode.
2. Scroll the chart right to view the next day or left to view the
previous day.
Sun & Moon Sub Tab
The Sun & Moon sub tab provides you with sunrise/sunset and
moon rise/set times. A graphic display of the moon phase also
appears. You can view Sun & Moon information for any date or
location. You can also use the play, fast forward, and stop buttons to
view an animation of the Sun & Moon sub tab.
To use the current date again, highlight the Date field. Press MENU,
highlight Use Current Date, and press ENTER.
GPSMAP 276C Owner’s Manual
75
MAIN MENU > CELESTIAL TAB
To view sun and moon information for a different date:
1. Use the ROCKER to highlight the Date field, and press
ENTER.
2. Use the ROCKER to change the digits of the date to the date
you want. You can also use the IN and OUT keys to view
information for another date. Press and hold IN or OUT to
scroll quickly through dates.
3. Press ENTER when finished. The unit shows the sun and
moon information for the date you entered or selected.
To use the current date again, highlight the Date field. Press MENU,
highlight Use Current Date, and press ENTER.
Select the
date and
location
Moon phase
Animation
controls for the
sky view
Location of the
sun and moon
in the sky view
1. Use the ROCKER to highlight the From field, and press
ENTER.
2. Highlight Use Find Menu, and press ENTER. The Find menu
automatically opens.
3. Select a waypoint or point of interest, and press ENTER.
4. On the waypoint information page, press ENTER. The unit
shows the sun and moon information for the location you
selected.
To use the current location, highlight the From field. Press ENTER,
highlight Current Location, and press ENTER again.
Hunt & Fish Sub Tab
Sun & Moon Sub Tab
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To view sun and moon information for a different
location:
The Hunt & Fish sub tab provides you with predictions of the best
times to hunt and fish in a selected location on a specific date.
To display the Hunt & Fish information:
1. Press MENU twice to open the Main Menu.
2. Press up or down on the ROCKER to highlight the Celestial
tab.
3. Use the ROCKER to select the Hunt & Fish sub tab.
GPSMAP 276C Owner’s Manual
MAIN MENU > CELESTIAL TAB
To view hunt and fish information for a different
location:
Hunt & Fish Sub Tab
To view hunt and fish information for a different date:
1. Highlight the Date field, and press ENTER.
2. Use the ROCKER to change the digits of the date to the date
you want. You can also use the zoom IN and OUT keys to
view information for another date. Press and hold IN or OUT
to scroll quickly through dates.
3. Press ENTER when finished. The unit shows the information
for the date you entered.
1. Use the ROCKER to highlight the From field, and
press ENTER.
2. Highlight Use Find Menu, and press ENTER. The Find menu
opens.
3. Select a point, and press ENTER.
4. On the information page, press ENTER. The unit shows
Hunt & Fish information for the selected location.
To use the current location:
1. Highlight the From field, and press ENTER.
2. Highlight Current Location, and press ENTER.
To use the current date again, highlight the Date field. Press MENU,
highlight Use Current Date, and press ENTER.
GPSMAP 276C Owner’s Manual
77
MAIN MENU > MESSAGE TAB
Message Tab
The Message tab shows a list of messages generated by the
GPSMAP 276C. Use the ROCKER to scroll through the entire list
of messages on the Log sub tab. Use the Log Filter sub tab to show
only the message types that you want to view.
Main Menu—Message Tab
To view messages:
1. Press MENU twice to open the Main Menu.
2. Highlight the Message tab.
3. Use the ROCKER to highlight a message, and press ENTER
to view detailed information about the message.
78
To show or hide messages using the log filter:
1. Press MENU twice to open the Main Menu.
2. Highlight the Message tab.
3. Press right on the ROCKER to highlight the Log Filter sub
tab. All messages appear by default.
Message Log Filter Tab
4. Use the ROCKER to highlight the message type you want to
hide, and press ENTER. The message name appears in the
Hide window.
5. Highlight the message, and press ENTER to show it again.
GPSMAP 276C Owner’s Manual
MAIN MENU > DISPLAY TAB
Display Tab
The Display tab contains the following options:
Use the Display tab on the Main Menu to set display features, such
as which pages to show in the main page sequence and how long the
backlight stays on.
To access the Display tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Display tab.
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—indicates whether the Main Menu tabs to contain text
and icons (default) or text tabs only.
Backlight Timeout—sets the backlight to stay on when 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.
Main Menu—Display Tab
Highway Page—indicates whether the Highway Page appears in the
main page sequence.
Compass Page—indicates whether the Compass Page appears in the
main page sequence.
Backlight Intensity—turns the backlight up or down. Press right on
the ROCKER to increase the intensity or left to decrease.
GPSMAP 276C Owner’s Manual
79
MAIN MENU > SOUND TAB AND SETUP TAB
Sound Tab
Use the Sound tab to customize the sounds made by the unit.
To access the Sound tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Sound tab.
Setup Tab
To customize how your GPSMAP 276C looks, use the System tab to
adjust certain system settings.
System Sub Tab
Use the System sub tab to control settings for system mode, speed
filter, language, and external power.
To access the System sub tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab.
3. Press right on the ROCKER to select System sub tab.
Main Menu—Sound Tab
Beeper—sets the beeper to chime during keypresses and alarms
(Key and Alarm) or on Alarms Only.
Attention Tone—turns on and off the attention tone that sounds
before the vocal prompts.
Voice Prompt—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.
Main Menu—System Setup Tab
System Mode—sets the unit to operate in Normal mode, Battery
Saver mode, or Simulator mode (for practice ONLY).
Speaker Volume—sets the external speaker or headphone volume.
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GPSMAP 276C Owner’s Manual
MAIN MENU > SETUP TAB
Usage Mode—sets the unit to operate in Marine (default) or
Automotive Mode.
Speed Filter—allows the unit to average speed readings. Choose
from Off, Auto (automatically controls filtering), or On (allows you
to enter a value in seconds).
Text Language—sets the unit’s on-screen language.
WAAS—allows you to enable or disable WAAS.
External Power Off—indicates whether the GPSMAP 276C
remains on (Stay On) or the unit turns off (Turn Off) when external
power is removed from the unit.
External Power On—indicates whether to turn on the GPSMAP
276C (Turn On) or charge the battery (Charge Battery) when
external power is applied to the unit.
Road Routing Sub Tab
Use the Road Routing sub tab to select road routing settings.
To access the Road Routing sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab.
3. Select the Road Routing sub tab.
GPSMAP 276C Owner’s Manual
Road Routing Sub Tab
The Road Routing sub tab contains the following options:
Route Preference—allows the unit to calculates routes based on:
• Faster Time—routes calculated are faster to drive but might
be longer in distance.
• Shorter Distance—routes calculated are shorter in distance
but might take more time to drive.
• Off Road—creates a direct line from your current location to
your destination. This is useful when traveling outside of the
detailed map coverage area or where no roads exist.
Ask My Preference—determines whether you are asked to select a
Route Preference before route calculations.
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MAIN MENU > SETUP TAB
Calculation Method—sets how the unit searches for the route.
• Quickest Calculation—calculates the route the quickest, but
it might not produce the best route.
• Quick Calculation—takes a bit more time to calculate but
generates a better quality route.
• Better Route—generates an even better quality route but uses
a longer calculation time.
• Best Route—generates the most optimal route but takes the
longest time to calculate.
Calculate Routes for—sets route calculation for the particular
vehicle you are operating to optimize the route for your vehicle type,
as some roads have vehicle-based restrictions.
Avoid—allows you to avoid certain road types and maneuvers on
your route. The unit uses these road types only if alternative routes
take you too far out of your way or if no other road is available.
Custom Avoids—allows you to enter specific areas and roads
that you would like to avoid in your navigation. See page 58 for
information on creating custom avoids.
Custom Road Prefs—allows you to avoid or use Major, Medium,
and Minor roads using a slider scale. This is useful if you want to
avoid major highways, for example. Select Auto Set to use preset
values.
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Guidance Sub Tab
Use the Guidance sub tab to set guidance information.
To access the Guidance sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab, and then select
the Guidance sub tab.
Guidance Sub Tab
Off-Route Recalculation—allows you to set whether the unit
prompts you when it is recalculating your route (Prompted), or
recalculates automatically. Set whether the unit announces the
recalculation (Automatic - Announced) or recalculates silently
(Automatic - Silent). You can turn the off-route recalculation Off.
Next Turn Pop-up—turns the Next Turn pop-up window Off, or
opens the window when you press NAV (Held NAV Key Only),
opens automatically (Automatically Only), or Both.
GPSMAP 276C Owner’s Manual
MAIN MENU > SETUP TAB
Timers Sub Tab
Use the Timers sub tab to set timers and view information about how
long the unit has been on.
To access the Timers sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab, and then select
the Timers sub tab.
Timers Sub Tab
Time Sub Tab
Use the Time sub tab to set the time format and zone, and set the
unit to conform to Daylight Saving Time. The current time and date
appear in the Current Time and Date field.
To access the Time sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab, and then select
the Time sub tab.
Time Sub Tab
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.
Time Zone—choose the time zone for your city so the
GPSMAP 276C shows the correct local time. Select Other to
enter a UTC Offset.
Marine—appears on the Compass Page in Marine Mode. See
page 48.
If the wrong date appears, press MENU, highlight Set Date, and
press ENTER. You are prompted to enter the current year. The
GPSMAP 276C uses this information when gathering satellite data
to show the correct date.
Since Midnight—shows the time the unit was turned on since
midnight. To reset, select All Unit Defaults on the System sub tab.
GPSMAP 276C Owner’s Manual
83
MAIN MENU > SETUP TAB
Units Sub Tab
Use the Units sub tab to customize measurement units.
To access the Units sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab, and then select
the Units sub tab.
Location Sub Tab
Use the Location sub tab to change location setting information.
To access the Location sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab, and then select
the Location sub tab.
See the “Appendix” for more information about location formats
and map datums. Also visit the National Imagery and Mapping
Agency at http://www.nima.mil for more information on grids and
datums.
Changing the Location Format
Units Sub Tab
Distance and Speed—select the unit to show your speed and
distance traveled.
Direction Display—select the unit to show your direction. Mils is a
unit of angle measurement used in military settings, in which 17.78
mils equal one degree.
Temperature—select the unit to show the temperature.
Elevation—select the unit to show your altitude.
Depth—select the unit to show the depth.
84
When you change the Location Format, you change the coordinate
system in which a given location reading appears. The default
format is latitude and longitude in degrees, minutes, and thousandths
of a minute (hddd°mm.mmm). Only change the location format if
you are using a map or chart that specifies a different location format
or want to use a format you are familiar with.
Selecting a Different Map Datum
Datums are used to describe geographic positions for surveying,
mapping, and navigation and are not actual maps built in the unit.
Only change the datum if you are using a map or chart that specifies
a different datum.
GPSMAP 276C Owner’s Manual
MAIN MENU > SETUP TAB
The default setting is WGS 84. The unit automatically selects the
best datum depending on your chosen location format.
WARNING: Selecting the wrong map datum can result in
substantial position errors. When in doubt, use the default WGS
84 datum for best overall performance.
Selecting a Different Heading Reference
You can select from Auto Mag Var, True, Grid, and User Mag Var.
Auto Mag Var provides magnetic north heading references that are
automatically determined from your current location. True provides
headings based on a true north reference. Grid provides headings
based on a grid north reference (and is used in conjunction with
the grid position formats). User Mag Var allows you to specify the
magnetic variation at your current location and provides magnetic
north heading references based on the variation you enter. Enter
the magnetic variation of your current location in the Magnetic
Variation field if you selected User Mag Var for the heading.
WARNING: If User Mag Var is selected, the unit does not
automatically calculate and update the magnetic variation at
your present location. You must update the magnetic variation as
your location changes. Failure to update this setting can result
in substantial differences between the information shown on your
unit and external references, such as a magnetic compass.
GPSMAP 276C Owner’s Manual
Welcome Sub Tab
Use the Welcome sub tab to enter information, such as your name
and address, or a welcome message that appears when the unit is
turned on. This feature is helpful if your unit is ever misplaced.
To access the Welcome sub tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select Setup tab, and then select the
Welcome sub tab.
Welcome Sub Tab
To add a welcome message:
1. Press up or down on the ROCKER to highlight one of the
Welcome Message fields, and press ENTER.
2. Use the ROCKER to enter information in the fields. You do
not need to enter information in every field. When finished,
press ENTER again.
85
MAIN MENU > SETUP TAB
3. To show the welcome message when you turn on your
GPSMAP 276C, highlight the Show at Power-up check
box, and press ENTER to select it. To hide the welcome
information at start-up, clear the check mark.
Com 1 and Com 2 Sub Tabs
Use the Com 1 and Com 2 sub tabs to change the data format and
control the input/output format used when connecting your unit to
external devices.
To access the Com 1 and Com 2 sub tabs:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab.
3. Press right on the ROCKER to select the Com 1 or Com 2
sub tab.
Com 1 Sub Tab
86
Serial Data Format—sets the data format to one of the following:
• Garmin Data Transfer—provides the proprietary format
used to exchange data with a computer or another Garmin
GPSMAP 276C. Garmin Data Transfer is disabled when the
USB is connected, and the unit automatically switches to USB
format. When the USB is disconnected, the USB field changes
to Transfer Mode.
• GARMIN DGPS—connects the GPSMAP 276C with a
Garmin DGPS beacon receiver.
• Garmin Remote Sonar—connects the GPSMAP 276C with
a GSD Sounder Module and transducer.
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 version 3.01 data and sonar NMEA
input support for the DBT, DSE,DPT, MTW, and VHW
sentences.
• RTCM In—allows DGPS input using a standard RTCM
format.
• RTCM In/NMEA Out—allows DGPS input using a standard
RTCM format and also provides NMEA 0183 version 3.01
output.
• RTCM In/Text Out—allows Differential GPS (DGPS) input
using a standard RTCM format and also outputs simple text
data that includes, data, time, location, and velocity.
GPSMAP 276C Owner’s Manual
MAIN MENU > SETUP TAB
• Text Out—allows the unit to output simple text data that
includes, data, time, location, and velocity. The Baud can be
set to 1200, 2400, 4800, or 9600.
• None—provides no interfacing capabilities.
If you select GARMIN DGPS or RTCM In/NMEA Out format,
you can control a differential beacon receiver directly from your
GPSMAP 276C using the COM 1 sub tab. You can have the unit
automatically scan for the DGPS beacon signal, or you can enter the
beacon frequency and bit rate on the unit, and the information will
be used to tune the beacon receiver. If you use a DGPS receiver,
WAAS capability is automatically turned off.
To have the unit automatically 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.
The Status field shows one of the following:
• Tuning—the unit is attempting to tune to the specified
frequency and bit rate.
• Scanning—the unit is automatically scanning through the
frequencies and bit rates.
GPSMAP 276C Owner’s Manual
• Receiving—the unit is receiving DGPS signal and ready for
operation.
• Check Wiring—the unit is not making connection with
DGPS receiver.
Status of the
scan
COM 1 sub tab with GARMIN DGPS selected
To restart the scan:
1. Press MENU.
2. Highlight Restart Scan, and press ENTER.
To manually enter a frequency and bit rate:
1. With the unit set to GARMIN DGPS or RTCM In/NMEA Out,
use the ROCKER to highlight the Beacon field, and press
ENTER.
2. Highlight User, and press ENTER.
3. Highlight the Frequency or Bit Rate field, and press ENTER
4. Enter a frequency or bit rate. Press ENTER when finished.
87
MAIN MENU > SETUP TAB
When the unit is receiving a DGPS signal, the Signal to Noise Ratio)
(SNR) and Distance fields show data. The SNR range is 0 dB to 30
dB, with 30 being the best. The Distance field may or may not show
data, depending on the signal being broadcast from the DGPS site.
3. Highlight the Serial Data Format field, and press ENTER.
4. Select NMEA In/NMEA Out, and press ENTER.
5. 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. You can also set the Output Rate to Fast to output
a minimum number of NMEA sentences at one-second intervals.
To access the Advanced NMEA Output Setup:
1. Press MENU twice to open the Main Menu, and then select
the Setup tab.
2. Select the COM 1 or COM 2 sub tab.
88
Advanced NMEA Output Setup
Use the Advanced NMEA Output Setup Page to set the output rate,
change the precision of the Lat/Lon minutes, set Waypoint IDs to
names or numbers, and turn on and off the GPS status, the GARMIN
Proprietary sentences, and Waypoint/Route (WPL, RTE).
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.
4. Press MENU. Use the ROCKER to highlight Set Up Page
Layout, and press ENTER.
5. Highlight Map With Sonar, and press ENTER.
NOTE: You MUST have a GSD 20 installed and connected to
your GPSMAP 276C to use the sonar features.
The Sonar Page is added to the end of the page sequence when you
are in Marine Mode. To view the Sonar Page, press PAGE or QUIT
repeatedly until it appears.
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 sonar.
To display the Sonar Page on the Map Page:
1. Press and hold PAGE.
2. Highlight Marine, and press ENTER.
3. Press PAGE or QUIT to open the Map Page.
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 pages together in the
split screen as described in the previous steps, press MENU.
2. Highlight Size Split, and press ENTER.
3. Use the ROCKER to move the vertical double-arrow right or
left, and press ENTER.
4. To stop resizing the screen, press QUIT. You can also press
MENU, highlight Stop Resizing, and press ENTER to stop
resizing the screen and retain the previous split setting.
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SETTING UP AND USING SONAR > USING THE SONAR PAGE
Using the Sonar Page
When combined with a GSD 20 Sounder Module, your GPSMAP
276C becomes a powerful fishfinder/flasher with the Sonar Page.
If a GSD 20 is attached, but the unit does not detect a transducer,
a “Sonar Turned Off” message appears across the Sonar Page. The
Sonar Page appears only if a GSD 20 has ever been attached or
when the unit is in Simulator Mode.
The middle of the page contains a right-to-left moving sonar image
of the water beneath your boat. Items appear as they pass under your
transducer. Those items on the right side of the screen are closer to
you than those on the left. Along the right side of the screen is an
adjustable scale that reflects the depth of the area being shown. The
top left corner shows the adjustment option, the depth, and the water
temperature.
The sonar returns show as red (strongest), then orange (strong),
yellow (medium), green (weaker), and blue (weakest). The Fish
Symbols option allows you to view the actual sonar data, a fish
symbol or a combination of both. When the unit is set to Dual, the
appearance of the fish symbols changes. Fish symbols from the
center of the beam (200 kHz) are solid (or narrow arches), but the
returns from the edges of the beam (50 kHz) are hollow (or wide
arches).
The sonar display can also be set to show a split screen view of a
zoomed portion of the sonar, bottom lock (display scaled from the
bottom up), or a combination of these options. For example, you
can choose to show dual frequency at a 2X zoom (Dual 2X) on one
half and normal range dual frequency (Dual) on the other half. The
current display mode appears at the bottom of each sonar display.
Read the “Understanding Sonar” section beginning on page 97 for
more on information about sonar.
Adjusting the Sonar Page
Sonar Page
90
Use the Adjustment menu to access the settings and features most
commonly used on the Sonar Page. Ten main adjustment options
are available: Range, Zoom, View, Gain, Target Level, Whiteline,
Frequency, Depth Line, Noise Reject, and Scroll. Use the ROCKER
and ENTER keys to make all adjustments. The currently selected
option appears in the upper-left corner.
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > USING THE SONAR PAGE
To select an adjustment option:
Use one of the following methods to select an adjustment option:
• Press the ROCKER right or left to scroll through the
adjustment options. When the adjustment option you want
appears, press ENTER.
• Press MENU, highlight Adjustments, and press ENTER.
Use the ROCKER to highlight the adjustment, and press
ENTER.
After you select an adjustment option, press the ROCKER up or
down to change the setting.
You can also press MENU and highlight a shortcut setting to
quickly change to commonly used settings and values.
Press ENTER to accept the new setting (or press QUIT to cancel)
and return to the Sonar Page.
Adjustment Options
Scroll—adjusts the rate that the sonar display scrolls from right to
left. If you are sitting still or the sonar display is moving too fast,
slow the scroll rate or pause the scrolling.
Range—sets the display depth range used for viewing. The unit can
be set to automatically track the bottom or set to a user-specified
depth range.
Zoom—allows you to quickly select a display zoom scale or to
split the display. When a scale other than No Zoom is selected, the
Adjustment Menu shows a new selection labeled View or Span. The
Zoom function is divided into six display levels:
• 2X Split—shows two reduced-size sonar pictures at the same
time. The right half of the display shows the complete sonar
picture at its original scale. The left half shows a portion of
the original picture at 1/2 depth scale.
• 2X Zoom—shows the 2X zoomed picture on the full screen.
• 4X Split—shows two reduced pictures, the right at the
original depth scale and the left at 1/4 the original depth scale.
• 4X Zoom—shows the 4X zoomed picture on the full screen.
Sonar Adjustments
GPSMAP 276C Owner’s Manual
91
SETTING UP AND USING SONAR > USING THE SONAR PAGE
• Btm (Bottom) Split—shows two reduced pictures, the right
at the original depth scale and the left showing sonar returns
from the bottom up. All target depths read as a distance from
the bottom.
• Btm (Bottom) Lock—shows returns from the bottom up on
the full screen.
TIP: Quickly zoom in and out of the Sonar display by pressing
the IN and OUT keys. Turn off the zoom function by pressing the
OUT key until the No Zoom setting appears.
View/Span—changes the viewing range of a zoomed display. If the
display is 2X or 4X split, only the zoomed portion on the left side of
the display is affected by the change. If the display is Bottom Split
or Bottom Lock, Span adjusts how far off the bottom the unit shows
data. This option is available when a Zoom scale other than No
Zoom is selected.
Gain—allows you to control the sensitivity of the unit’s receiver,
which provides flexibility in what appears. To see more detail,
increase the receiver sensitivity by selecting a higher gain. If there is
too much detail or if the screen is cluttered, select a lower gain.
Target Level—adjusts which colors are used to show sonar
information. A Color Bar appears on the right side of the screen
as you adjust this setting. A higher percentage results in more
92
strong-signaled colors shown on the sonar display. A lower
percentage results in more weaker-signaled colors shown on the
sonar display. This setting does not increase or decrease the unit
Gain.
Whiteline—controls how the unit shows information about the
bottom type (hard or soft). With Whiteline Off, the bottom return
shows as red. Set Whiteline at Normal or 1–100% to determine
bottom hardness. See page 100 for more information.
Frequency—allows you to choose a transducer frequency.
Frequency refers to the “pitch” of the sound that the transducer
sends and receives.
Depth Line—adds a horizontal depth line across the display that is
used to measure the depth of underwater objects. The depth of the
line appears in a box on the right side of the line. Press Up or Down
on the ROCKER to move the line on the sonar display.
Noise Reject—helps filter unwanted noise from the sonar display.
The Noise Reject can be turned Off, set to Normal (automatically
adjusts for optimum viewing) or to a fixed 1–100% setting. When
setting the Noise Reject, remember that a higher noise rejection
setting is less likely to show fish or structures.
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > SETTING UP SONAR
Using the Pointer on the Sonar Page
You can show the pointer (arrow) to reference sonar items and
mark underwater waypoints. This makes it easier to find and use
an object such as a stump for a future fishing location. When using
this feature, the Sonar Page pauses. 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 might see a
discontinuity from where the sonar information stops and where it
starts again.
Setting Up Sonar
Use the Sonar tab on the Main Menu to set up the Sonar Page.
To access the Sonar Tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Sonar tab.
To mark an underwater waypoint:
1. From the Sonar Page, press MENU, highlight Show Pointer,
and press ENTER.
2. Use the ROCKER to move the pointer to the location you
want to mark, and 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.
GPSMAP 276C Owner’s Manual
Main Menu—Sonar Tab
Fish Symbols—select how the Sonar Page shows underwater
targets and background information. Select Off to display all of the
available information about the underwater environment. Select a
fish symbol to show only the information related to that symbol.
Water Type—select the proper water type you are boating in.
Because 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.
93
SETTING UP AND USING SONAR > SETTING UP SONAR
Depth Number—select how efficient the digital depth update rate
is. Fast Update updates quicker and is recommended for low-noise
water deeper than 50 feet. Auto is best for shallow water or highnoise areas, has a slower screen update, and is best used if you travel
a wide variety of depths.
Calibrating the Water Speed
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.
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.
Map Split Sonar Detail—select how much detail appears on the
Map Page with the sonar shown. 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 can draw several feet of water.
The Keel Offset is reflected in the depth reading.
If you select Temp, Spd for the Transducer option on the Setup sub
tab, you also need to calibrate the water speed to ensure the Water
Speed shown on your unit is accurate. The calibration should take
place in water having little or no current.
To calibrate the water speed:
1. On the Setup sub tab, use the ROCKER to highlight the
Calibrate Water Speed button, and press ENTER.
2. Bring the boat to a cruising speed. Both the top ground
and uncalibrated water speeds are shown at the bottom of
the calibration window. Note your top speed, stop the boat,
and press ENTER. By default, the top ground speed is
automatically shown. If a ground speed is not available, the
top uncalibrated water speed is used instead.
Transducer—select the type of transducer that you are using. If you
are using a speed-capable transducer/sensor, select Temp, Spd.
94
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > SETTING UP SONAR
Setting Up the Sonar Display
You can set up how the sonar information appears on-screen using
the Display sub tab.
To access the Display sub tab:
Calibrating the Water Speed
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Sonar tab.
3. Press right on the ROCKER to highlight the Display sub tab.
3. If the new speed is correct, highlight OK, and press ENTER.
If you want to manually enter a calibration, press ENTER
while the speed is highlighted, enter a new speed, and press
ENTER again.
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”
appears 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 screen.
Check connections of speed sensor cables.
GPSMAP 276C Owner’s Manual
Display Sub Tab
Scale—select how and where you want the depth scale to appear.
Color Bar—select On to show a gradient scale of the current Target
Level setting on the Setup sub tab.
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SETTING UP AND USING SONAR > SETTING UP SONAR
Flasher—select On to display a graphic Flasher representation on
the far right side of the sonar display. This graphic Flasher shows
structure and bottom returns much the same as a true Flasher. You
might find this feature 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
White
background
Color Bar
Temperature
graph
Depth scale
in corners
Viewing the Temperature
Use the Temperature sub tab to view a graph of water temperature
changes over a period of time. The graph reads from right to left
so that the most recent temperature measured appears 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. To view
temperature information, you must select Temp as the Transducer
type on the Setup sub tab.
NOTE: You must be receiving proper sonar data from another
device, such as a Garmin GSD 20 Sounder Module, to view
temperature information.
To access the Temperature sub tab:
1. Press MENU twice to open the Main Menu.
2. Highlight the Sonar tab, and then use ROCKER to select the
Temperature sub tab.
Sonar Page with the Sonar Display settings changed
Temperature Sub Tab
96
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
Changing the Temperature Display
The graph will adjust and show the temperatures changes according
to the Temperature Scale and Time Duration settings.
Temperature Scale—select a degree span from the list. Select Auto
to have the unit automatically determine the best range, or select a
span of 2, 4, 6, 8, or 10 degrees.
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.
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.
Resetting 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 reset the scale only when you select Auto for the
Temperature Scale.
To restore the temperature graph to defaults, press MENU, highlight
Restore Default, and press ENTER.
GPSMAP 276C Owner’s Manual
Sonar Page
97
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
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.
Fish
1'
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. See “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 appears. 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 might look like it is on the Sonar Page.
98
10'
Tree
Tree
20'
Aerial View of the Water
Sonar Display
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
cone angles (40°) associated with low frequencies (50 kHz) provide
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.
GPSMAP 276C Owner’s Manual
SETTING UP AND USING SONAR > UNDERSTANDING SONAR
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.
Coverage
Diameter
Depth
Coverage
Diameter
Depth
Dual frequency mode combines both frequencies to get the best
coverage area and contour/depth readings.
40° Cone Angle (50 kHz)
GPSMAP 276C Owner’s Manual
10° Cone Angle (200 kHz)
99
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
100
Whiteline Off
Thermocline
GPSMAP 276C Owner’s Manual
APPENDIX > SPECIFICATIONS
APPENDIX
Specifications
Physical Specifications
Size:
Weight:
Display:
Case:
Temp. Range:
Power
Battery:
Battery Life:
Source:
Fuse:
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)
Performance
Receiver:
Differential-ready 12 parallel channel receiver
Acquisition Times: Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (First Time/AutoLocate™)
Update Rate:
1/second, continuous
Accuracy
GPS:
DGPS (USCG):
DGPS (WAAS):
Velocity:
Dynamics:
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 on the backlight setting.
11–35 VDC
3AG - 1.5 Amp
GPSMAP 276C Owner’s Manual
101
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.
Auto Navigation Kit: Provides the parts and map data to use the
GPSMAP 276C in an automobile.
GA 29, GA 29F, and GA 26C Antennas: Garmin remote antennas.
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.
102
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, 128 MB, and 256 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.
Carrying Case: Protects the GPSMAP 276C when not in use; has
storage space for data cards.
Protective Cover: Snaps on the front of the unit to protect the
screen from damage.
MapSource Software CD-ROMs: Offers several detailed mapping
options that are compatible with the GPSMAP 276C, including
City Select, BlueChart, Recreational Lakes with Fishing Hot Spots,
Minnesota Lake Master, and Topo.
Pre-Programmed Data Cards: Data cards preprogrammed with
either Garmin BlueChart or Fishing Hot Spots map data.
GPSMAP 276C Owner’s Manual
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
Data Out 1
Blue
Data In
2 Green
Power
Red
Data Out 2
Violet
Ground
Black
Alarm
White
Voice (+)
Brown
Data In
1 Yellow
Voice (-)
Orange
Power/Data Connector on the Cable
(−)
(+)
11−35 VDC
Data Out 2
(Violet)
(RXD)
Data In 2
(Green)
(TXD)
Autopilot/
NMEA
Device
Data Out 1
(White/Blue)
(Blue)
(+)
GSD 20
Sounder
Data In 1
(Yellow)
GPSMAP 276C Owner’s Manual
(White/Blue)
(−)
(Orange)
Closed = ON
Open = OFF
switch
103
APPENDIX > INSTALLATION INFORMATION
Connecting Your GPSMAP 276C to a Computer
You can connect your GPSMAP 276C to your computer using the
supplied USB cable to connect to a USB data port or the optional PC
Interface cable to connect to a DB-9 serial communications port.
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 on Your PC
Serial Communications Port
104
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 the
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 might 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 might be updated
periodically. You can find these updates at www.garmin.com.
GPSMAP 276C Owner’s Manual
APPENDIX > INSTALLATION INFORMATION
Using xImage for Customized Waypoint Icons
Use xImage to exchange images between your PC and your
GPSMAP 276C. You can download and save screenshots of any
screen shown 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 computer), and send them back to your GPS unit.
You can download xImage from the Garmin Web site at http://www.
garmin.com/ximage/. See 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. 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.
GPSMAP 276C Owner’s Manual
105
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 GPS 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, DSC, DSE, MTW, VHW, VTG, and XTE
sentences.
Garmin’s proprietary communication protocol is available from the
Web site (www.garmin.com).
Removing the GPS Antenna
You can remove the GPS 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.
106
Removing the GPS Antenna
GPSMAP 276C Owner’s Manual
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 see the Garmin Web site and read the
GPS Guide for Beginners, which is 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 want to navigate them.
Waypoint—a location you store in your GPS. It might be a
checkpoint on a route or a significant ground feature, such as your
campsite or favorite fishing spot.
GPSMAP 276C Owner’s Manual
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 tab and will show one of the following conditions:
• None—no optional beacon receiver is attached or enabled in
the Interface sub tab on the Main Menu—Setup tab or WAAS
is disabled.
• Searching for WAAS—WAAS is enabled and the receiver is
searching for WAAS signal.
• Using WAAS—WAAS capability is enabled and the unit is
receiving WAAS corrections.
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APPENDIX > LEARNING ABOUT GPS
• Check Beacon Wiring—the DGPS setting is enabled in the
Interface sub tab on the Main Menu—Setup tab but no DGPS
device is detected.
• No Beacon Signal—DGPS receiver is attached, but not
transmitting 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 25 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.
108
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, see page 6.
For more information, go to http://gps.faa.gov/Programs/WAAS/
waas.htm.
GPSMAP 276C Owner’s Manual
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 location 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 might be shown as TDs,
and all navigation functions may be used as if the unit was actually
receiving LORAN signals.
GPSMAP 276C Owner’s Manual
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. Because the
GPSMAP 276C does not rely on the LORAN signal for navigation,
it can reference a different GRI chain or secondary stations and still
navigate to the location stored in memory.
The LORAN Location Format field is located on the System
Tab—Location sub tab on 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.
109
APPENDIX > LORAN TD SETUP
To set up Loran TD from the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Setup tab, and then
highlight the Location sub tab.
3. Using the ROCKER, highlight the Location Format field and
press ENTER.
LORAN TD Setup
Location Sub Tab
4. Highlight Loran TD, and press ENTER.
5. Highlight the Setup button located on the right side of the
Location Format field, and press ENTER. The Loran TD
Setup window appears.
6. To change the settings of any of the five fields, highlight the
field, press ENTER, select a setting using the ROCKER, and
press ENTER again.
7. When finished, highlight the Save button, and press ENTER.
110
If the active GRI Chain, secondary stations, or offsets were 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.
GPSMAP 276C Owner’s Manual
APPENDIX > MAP DATUMS AND LOCATION FORMATS
Map Datums and Location Formats
Map Datums are based on a mathematical model of the Earth.
What Are a Map Datums?
A datum is a mathematical model of the Earth that approximates
the shape of the Earth and enables calculations to be carried out in a
consistent and accurate manner. 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.
What is a Location Format?
Your current location can be viewed on the GPS in the form of
coordinates. Because 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 used by all
Garmin units.
You can choose to change the location format to use with other
coordinate systems in Location field of the Setup tab—Location
sub 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/UsingaGarminGPSwit
hPaperLandMaps_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.
GPSMAP 276C Owner’s Manual
111
APPENDIX > DIGITAL SELECTIVE CALLING (DSC)
Digital Selective Calling (DSC)
DSC uses marine VHF radio GPS technologies to transmit and
receive location information. DSC is used by mariners to assist them
in two major areas: Distress Calls and Position Reporting.
A non-emergency DSC Position Report allows mariners to exchange
and display their positions. 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.
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 location.
112
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
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?
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 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.
GPSMAP 276C Owner’s Manual
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).
GPSMAP 276C Owner’s Manual
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.
113
APPENDIX > MESSAGES
Messages
Distress Call—a DSC distress call was received. Take appropriate action.
Accuracy Alarm—the GPS accuracy has fallen outside of user-set value.
Dragging Anchor—the distance set in the Anchor Drag Alarm was exceeded.
Alarm Clock—The alarm clock has sounded.
Drift Alarm—the water depth has changed by the amount entered in the Drift
Alarm setup.
Antenna Shorted to Ground—the external GPS antenna has an electrical
connection problem. Contact Garmin Product Support.
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.
Basemap Failed Unit Needs Repair—there is an internal problem with your
unit. Contact Garmin Product Support to have the unit serviced.
Boat Is Not Moving Fast Enough to Calibrate—the boat is not moving fast
enough for the speed wheel to provide a valid speed.
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.
Detail Maps Don’t Support Routing—maps that are loaded on the data card
do not support automatic route calculation.
114
Fish Alarm—a fish was detected. The unit shows an icon and beeps (if
enabled). This alarm does not display a message banner.
Lost Satellite Reception—the unit is unable to receive satellite signals.
Memory Full—unit memory is full, no further data can be saved.
Memory (RAM) Failed Unit Needs Repair—there is an internal problem
with your unit. Contact Garmin Product Support to have the unit serviced.
Memory (ROM) Failed Unit Needs Repair—there is an internal problem
with your unit. Contact Garmin Product Support to have the unit serviced.
Near Proximity Point—you have reached the distance set for a proximity
waypoint.
NMEA Depth is Below Transducer—no keel offset value has been received
from the external sonar device.
No Diff GPS Location—RTCM is selected but the unit is not receiving DGPS
data.
No Roads Near Destination—the destination for the road route you tried to
calculate is not near any roads. Select a different destination.
GPSMAP 276C Owner’s Manual
APPENDIX > MESSAGES
No Roads Near Starting Point—the start location for the road route you tried
to calculate is not near any roads. Select a different start location.
No DGPS Position—no differential connection data is available, or not enough
data is available to calculate a DGPS position.
No Tide Stations for that Area—no tide stations within 100 miles of the area.
None Found—no data matched the search criteria.
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.
Route Calculation Error—no route can be calculated.
Route Memory Full—no additional routes can be saved.
Route Truncated—uploaded route from another device has more than 300
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.
Sonar Failed Unit Needs Repair—there is an internal problem with the unit.
Contact Garmin Product Support to have the unit serviced.
Sunrise, Switching to Day Mode—the unit is switching to Day Mode.
GPSMAP 276C Owner’s Manual
Sunset, Switching to Night Mode—the unit is switching to Night Mode
Track Already Exists—a saved track with the same name already exists.
Track Log Full—the track log is full and track recording was turned off.
To record more track points, you 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.
Transducer Disconnected, Sonar Turned Off—the unit has no transducer
attached, has a bad cable/transducer, or has a disconnected transducer cable.
Transfer Complete—data transfer was completed.
USB Connected—the USB cable was recently plugged in.
User Timer Expired—the Timer Alarm value has counted down to zero.
Water Speed Sensor is Not Working—the speed sensor is not detected. Check
the connections.
Water Temperature Alarm—sonar has reported a temperature above, below,
inside, or outside the specified value(s).
Waypoint Already Exists—a waypoint with the same name already exists.
Waypoint Memory Full—the unit has stored the maximum number of
waypoints.
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.
Course to Steer—the recommended direction to steer in order to reduce crosstrack error and return to the course line. Shown as Steer.
Cross Track—the distance you are off a desired course in either direction, left
or right.
Depth (Marine Only)—the depth of water from sonar NMEA input.
Dest Wpt—see Waypoint (Destination).
Distance (Destination)—the entire distance of a route, from beginning to end.
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.
116
ETE (Destination)—Estimated Time Enroute. The estimated time required to
reach your 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).
Move Timer—see Trip Timer (Moving)
Next Course—the course your route will take you on after you reach the next
waypoint.
Next Turn—the direction of the next turn on an active route.
Next Wpt—see Waypoint (Next).
Odometer—the total distance traveled since the odometer was reset.
Pointer—the arrow indicating the direction to travel to the next point on a
route.
Power—the power indicator icon: Battery, External Power, or Charging.
GPSMAP 276C Owner’s Manual
APPENDIX > DATA FIELD OPTIONS
Speed—your current vehicle speed can be measured in miles per hour,
kilometers per hour, or knots.
Steer—see Course to Steer.
Sunrise—the time at which the sun rises on this day.
Sunset—the time at which the sun sets on this day.
Ttl Avg Spd—see Trip Avg. Speed (Total).
Turn—the distance between Bearing (BRG) and Track (TRG). L indicates you
should turn left. R indicates you should turn right. The degrees indicates the
difference angle and the number of degrees you should turn.
User Timer—the timer you set on the Main Menu.
Time—the current time and date. It can be shown in 12-hour or 24-hour format
in local time or universal (UTC) time.
Velocity Made Good—the rate of closure on a destination based on your
current speed and course of travel. Appears as VMG.
Track—the direction of movement relative to a ground position. Also referred
to as ground track.
Voltage—the direct current voltage level of an external power source.
Trip Avg. Speed (Moving)—the average speed while moving since the last
reset of the trip computer. Appears as Mov Avg Spd.
Water Speed (Marine Only)—the data acquired from measurement devices
interfaced to the unit is used to calculate your current speed over water.
Trip Avg. Speed (Total)—the total average speed traveled since the last reset
of the trip computer. Appears as Ttl Avg Spd.
Water Temperature (Marine Only)—the temperature of water at a measured
depth using measurement devices interfaced to the unit.
Trip Odometer—the total distance traveled since the trip computer was reset.
Waypoint (Destination)—the last point on a route, your destination. Appears
as Dest Wpt.
Trip Timer (Moving)—the length of time your vehicle has been in motion,
since the trip computer was reset. Appears as Move Timer.
Vertical Speed—the rate of climb or descent.
Waypoint (Next)—the next waypoint in your route. Appears as Next Wpt.
Trip Timer (Total)—the total time the unit has been tracking since the trip
computer was reset.
GPSMAP 276C Owner’s Manual
117
APPENDIX > SOFTWARE LICENSE AGREEMENT AND PRODUCT REGISTRATION
Software License Agreement
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.
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.
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
Product Registration
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.
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.
Serial Number: ___ ___ ___ ___ ___ ___ ___ ___
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 > LIMITED WARRANTY
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 > FCC COMPLIANCE
FCC Compliance
• 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 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.
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.
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.
120
GPSMAP 276C Owner’s Manual
INDEX
INDEX
A
Accessories 102
Accuracy Alarm 72
Acquiring Satellites 5
Active Route Page 40, 52, 54
Active Track Tab 35, 38
AC Outlet 2
Add to Route 19, 22, 24, 28, 59
Advanced NMEA Output Setup 88
Alarms 80
DSC 67, 70
navigation 71
persistent 71
proximity 34
sonar 72
system 72
Alarms Tab 71–72
Alerts. See Alarms
Anchor Drag Alarm 72
Antenna 1, 3, 106
Append to Route 28
Arrival Alarm 71
Ask My Preference 81
Assign Category 31
Attention Tone 80
AutoLocate 3, 5
GPSMAP 276C Owner’s Manual
Automotive Mode 54
following a saved route 57
navigating 55
pages 61–63
Auto Arrange 18
Average Location 28
Avoidance Button 82
Avoids 58, 82
B
Backlight 3, 79
Basic Operation 12, 54
Battery
level 4
pack 1, 2
saver mode 80
Beeper 80
BlueChart 105
Bug Indicator 48
C
Cable 103
Calculation Method 82
Calendar Tab 73
Calibrate Water Speed 94
Categories
Find Menu 16
Waypoint 31, 32
Caution vi
CDI. See Course Deviation Indicator
Celestial Tab 74
Hunt & Fish sub tab 76
Sun & Moon sub tab 75
Tide sub tab 74
Chain Number 109
Charging 2, 4
Check Beacon Wiring 108
Cigarette Lighter Adapter 2
Cleaning iv
Clear
Track Log 36
Clock Alarm 72
Color Mode 79
Compass Page 47, 49, 79
marine timer 48
options menu 48
showing/hiding 48
Connecting the Power Cable 2, 103
Contact Garmin 118
Count Down or Up 83
Course Pointer 48
Create
category 31
route 19, 20
waypoints 24, 25
Current Route Page 60
Custom Avoids 58, 82
D
Data Card 45, 105
information 18, 43
slot 1
Data Fields
changing 41, 42
options 116
Date 83
Daylight Saving Time 83
Day View 73
DB-9 104
Deactivate 52
Declutter 46
Deep Water Alarm 72
Defaults 8, 10
Delete
category 32
DSC Call 67
DSC directory item 68
route 23
track log 36
waypoint 32, 33
Depth 84
Detailed Maps 45
Detour 58
DGPS 86, 87, 107
alarm 72
Digital Selective Calling. See DSC
Direction Display 84
Display Tab 79
121
INDEX
Distance and Speed 84
Distress Calls 66, 67–70, 112, 113
Drift 72
DSC 66–70, 112
E
Edit
route 21, 22, 58
waypoints 30
Editing a Waypoint 30
Emergency 112
Entering Data 9
Erase Track Log 36
External Power Source 4
External Voltage Alarm 72
F
Faster Time 81
FCC 112, 113, 120
Field 8
Find 16
from 16
from a different location 16, 17
menu 14, 18
Finding an Item 16–18
Find Current Location 3
Find Menu 16
Fish Symbols 93
Flasher 96
122
Following an Automotive Route 60
Fuel Flow 23
G
Getting Started 1
Going to a Destination 13
Go To 30
distress call 68
history 17
point 13
position report 68
GPS
learning about 107
off/on 5
options 6
tips 6
GPS Tab 64
GRI Chain 110
GSD 20 89
H
Heading 85
Highway Page 50, 79
hiding/showing 50
options menu 51
page layout 51
setup 51
Hunt & Fish Sub Tab 76
I
Icons 79
Identifier 112
Information Page 18, 46
Initialize 3, 107
Installation 103
Interval 38
Invert 52
Item Details 18
L
Language 80, 81
Legs, Track 38
Limited Warranty 119
Lithium-ion Battery 2
Local Time 83
Location 6, 26
Location Format 84, 111
Log Filter 78
Longitude 116
LORAN TD Setup 109
Lost Satellite Reception 5
M
Magnetic Variation 85
Main Menu 64–88
Alarms tab 71
Calendar tab 73
Celestial tab 74
Display tab 79
DSC tab 66
GPS tab 4, 64
Message tab 78
Points tab 65
Route tab 65
Setup tab 80
Sonar tab 70
Sound tab 80
Track tab 66
Manual Conventions i
Man OverBoard. See MOB
MapSource 105
Map Card 45
Map Datum 111
Map Orientation 44
Map Page 41, 61
declutter 46
setup 42
Marine Mode
navigating 13
pages 41–45
Marine Pages 41–53
Active Route 52
Compass 47
Highway 50
Map 41
Position Data 53
Marine Timer 48
Maritime Mobile Service Identity.
See MMSI
GPSMAP 276C Owner’s Manual
INDEX
Marking a Waypoint 9, 24–26, 29
underwater 93
MayDay 69, 113
Measuring Distance 47
Messages 114, 116
Message Tab 78
Mils 84
MMSI 66, 112, 113
MOB 13, 15
Modes 12, 54
Month View 73
Moon Information 75
Off Course Alarm 72
Off Road 81
Off Route Recalculation 82
On-Screen Button 8
Options Menu
opening 9
using 9
Overzoom 45
N
P
NAV/MOB 15
Navigate
route 13, 20
track 13, 15, 38
Navigation
resuming 57
stopping 57
Navigation Alarms 71
Near
current route 17, 18
destination 17, 18
next 17, 18
other 17, 18
Next Turn 82
NMEA 86, 87, 88, 106
GPSMAP 276C Owner’s Manual
North Up 6, 44
No Beacon Signal 108
O
Page Layout 41
highway 51
trip computer 63
Page Sequence 12
Panning the Map 41, 45
PC Interface Cable 104
Persistent Alarm 71
Plan Route 23, 52
Plan Trips 73
Point 73
Points of Interest 16
Points Tab 65
Position 107
Position Data Page 53
Position Mode 41
Position Report 67–70, 112–113
Power 2, 3, 103
connector 1, 4
outlet 2
Practice Mode. See Simulator Mode
Project Waypoint Location 29
Proximity 34
alarms 34
points tab 33
waypoint 34
R
Recalculating 82
Receiver Not Usable 5
Receiver Status 5
Receive Satellite Signals 3
Receiving a DSC Call 68
Record Tracks 35, 38
Reference Position 17
Registration 118
Reset Timer 83
Reset Trip Data 53, 63
Review Route 21
Road Routing Tab 81
Route 22, 73, 107
add points 22, 28
create 19–23
edit 21–23
leg transition 23
marine 39
options menu 23
preference 81
Route Tab 65
RTCM 86, 87
S
Sail Boat Racing Timer 48
Satellite Acquisition 5
Satellite Signals 4
Save Present Location 24
Save this Route 62
Saving the Current Route 62
Saving Tracks 36, 37, 38
Scanning for Beacon 108
Scan for a Frequency 87
Scroll Bar 8
Searching for WAAS 107
Searching the Sky 5
Search History 17
Selecting Options 9
Serial Communications Port 104
Serial Data Format 86
Serial Number 1, 118
Setup Tab 80
Guidance sub tab 82
Location sub tab 84
Road Routing sub tab 81
System sub tab 80
Timers sub tab 83
123
INDEX
Time sub tab 83
Units sub tab 84
Welcome sub tab 85
Set an Alarm 71
Set Date 83
Set Fuel Flow 23
Set Speed 23
Shallow Water Alarm 72
Shorter Distance 81
Signal Strength 5
Simulator Mode 11
new location 11
starting 11
Software License Agreement 118
Sonar 89, 90–92
adjusting 90–92
alarms 72
on the map page 89
setting up 93, 95
understanding 97
Sonar Tab 70
Sound Tab 80
Speaker 80
Specifications 101
Speed Filter 81
Stop Navigation 52
Sun & Moon Sub Tab 75
Switch Modes 12, 54
System Alarms 72
124
T
Temperature 84, 96
Text Language 81
Thermoclines 100
Tide
chart 75
information 74
station 75
sub tab 74
Time
delay 109
format 83
offsets 111
zone 83
Timer 48
TracBack 13, 38
Track
legs 38
log 35, 36, 38
review page 36, 37
tab 35
TracBack 37, 38
Track Tab 66
Track Up 6, 44
Transducer 94, 98
Trip Computer Page 53, 63
options menu 63
page layout 63
Trip Planning 23, 73
Tuning Beacon 108
Turn-by-Turn Route 14, 55, 57, 60
Turn Off Recalculation 82
Turn Unit On and Off 3
U
Underwater Waypoints 93
Unit Overview 1
Usage Mode 12, 81
USB 86
connector 1, 104
data cable 104
drivers 104
User Points Tab 30
UTC 83
UTM/UPS 111
V
VHF 66, 112
Via Points 59
View Details 46
Voice Language 80
Volume 3, 80
Waypoint 24, 107
categories 31
create 24–34
edit 30
information page 18
name 30
projecting 29
proximity 34
reviewing 27
symbol 30
transition to next 23
Week View 73
Welcome Message 85
Whiteline 92, 100
Wide Area Augmentation System.
See WAAS
X
xImage 105
Z
Zoom 44
W
WAAS 81, 103, 107, 108
Warning v
Warning Page 3
Water Immersion iv
Water Speed 94
calibrating 94
Water Temp 72
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, 2005 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. C
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