Garmin 276C GPS Receiver User Manual

GPSMAP 276C
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© Copyright 2004 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Tel. 913/397.8200 or 800/800.1020
Fax 913/397.8282
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Tel. 44/0870.8501241
Fax 44/0870.8501251
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
Tel. 886/2.2642.9199
Fax 886/2.2642.9099
All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage
medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto a hard
drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this
manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is
strictly prohibited.
Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and supplemental
information concerning the use and operation of this and other Garmin products.
Garmin®, GPSMAP®, AutoLocate®, TracBack®, BlueChart®, and MapSource® are registered trademarks of Garmin Ltd. or its subsidiaries and may not be used without
the express permission of Garmin.
March 2004
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Part Number 190-00335-00 Rev. A
Printed in Taiwan
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Introduction
Preface
Thank you for choosing the Garmin GPSMAP 276C. The GPSMAP 276C utilizes the proven performance of Garmin GPS and full-featured mapping to create an unsurpassed portable marine navigation
chartplotter. Please take a moment now to compare the contents of this package with the packing list on
the outside of the box. If any pieces are missing, please 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 in detail. This manual is organized into the following chapters. The
Introduction chapter contains the Table of Contents.
The Getting Started chapter provides information such as an overview of unit features and how to
turn the unit on and adjust the backlight. It also contains a simulation to help you get acquainted with
your new GPSMAP 276C.
The Basic Operation chapter provides you with information about basic features such as using the
Find Menu, navigating a route, and using waypoints. There are also step-by-step directions to assist you
in these operations.
The Main Pages chapter provides detailed explanations about each page in the GPSMAP 276C and
step-by-step directions on using the pages. The Main Menu chapter provides detailed explanations
about the Main Menu and how to use it to configure your unit.
The Appendix contains information such as specifications, optional accessories, and maintenance
information. You can also find warranty, safety, and FCC information in the Appendix. An Index is
provided at the end of the manual for reference. Simply look up the topic you wish to learn about and
read the page or pages listed.
Welcome
The GPSMAP 276C uses GPS technology in order to find your
precise location. GPS stands for Global Positioning System,
a group of 24 satellites, circling the earth twice a day at an
altitude of about 12,000 miles. The satellites transmit very low
power radio signals containing position and time information,
allowing anyone with a GPS receiver to determine their location
on the Earth within 100 meters or better. For more detailed
information regarding GPS, Garmin has prepared a booklet
titled “GPS Guide for Beginners” available from our Web site at
www.garmin.com.
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Introduction
Table of Contents
Introduction..................................... i
Basic Operation ............................ 14
Preface ................................................................. i
About This Manual............................................... i
Table of Contents ................................................ ii
Finding an Item ................................................... 14
Using the Find Menu ........................................ 14
Viewing the Information Page ........................... 15
Using the Find From Feature............................. 15
Recently Found Items........................................ 16
Find Menu Options Menu................................. 16
Navigating in Marine Mode ................................ 17
Going to a Destination in Marine Mode............. 17
Go To Point................................................. 17
Navigate Route............................................ 18
Navigate Track (TracBack Navigation) ......... 19
Man OverBoard (MOB) ............................... 20
Navigating in Automotive Mode......................... 21
Going to a Destination in Automotive Mode...... 21
New Route .................................................. 21
Navigate Route............................................ 22
Navigate Track (TracBack Navigation) ......... 22
Edit Vias...................................................... 22
Using Routes ....................................................... 23
Creating a Route................................................ 23
Route Tab Options Menu .................................. 24
Active Route Page.............................................. 25
Route Review Page ............................................ 25
Route Review Options Menu ...................... 26
Following a Route ............................................. 27
Getting Started .............................. 1
Unit Overview........................................................ 1
Learning about the Keypad ................................. 2
Charging the GPSMAP 276C............................... 3
Information about the Charge Mode.................... 3
Turning On the GPSMAP 276C ........................... 4
Initializing the GPSMAP 276C ............................ 4
Adjusting the Backlight and Volume.................... 5
Using the GPSMAP 276C ....................................... 6
Understanding the Features................................. 6
Selecting Options and Entering Data ................... 7
Using Additional Map Data ................................. 8
Simulated Basic Navigation .................................. 9
Activating the Simulator Mode ............................ 9
Entering a New Location ..................................... 9
Simulating Navigation ....................................... 10
Main Pages: Marine Mode
and Automotive Mode................................. 12
Marine Mode Page Sequence ....................... 13
Automotive Mode Page Sequence................ 13
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Introduction
Using Waypoints.................................................. 28
Creating and Using Waypoints .......................... 28
Marking Your Present Position .................... 28
Creating Waypoints Graphically.................. 29
Additional Options for Creating Waypoints. 30
Waypoint Menu Options............................. 32
Reviewing and Editing Waypoints ..................... 33
Points Tab ......................................................... 35
‘User’ tab ..................................................... 35
‘Proximity’ tab ............................................. 38
Main Pages ................................... 40
Map Page............................................................. 40
Using the Map Page........................................... 40
Panning the Map with the Cursor...................... 41
Selecting Map Scales and Additional Maps ........ 43
Map Page Options Menu ................................... 44
Map Page Setup Menu....................................... 47
‘General’ tab ................................................ 48
‘Map’ tab ..................................................... 48
‘Line’ tab ..................................................... 49
‘Waypoint’ tab ............................................. 49
‘Marine’ tab ................................................. 50
‘Mrn Nav’ (Marine Navaids) tab................... 50
‘City’ tab...................................................... 50
‘Road’ tab .................................................... 51
‘Point’ tab .................................................... 51
‘Area’ tab ..................................................... 51
‘Topo’ tab .................................................... 51
Compass Page ..................................................... 52
Using the Compass Page ................................... 52
Compass Page Options Menu............................ 53
Highway Page...................................................... 54
Highway Page Overview.................................... 54
Using the Highway Page.................................... 54
Highway Page Options Menu ............................ 55
Active Route Page: Marine Mode........................ 56
Active Route Page.............................................. 56
Active Route Page Options Menu ...................... 56
Current Route Page: Automotive Mode .............. 57
Current Route Page ........................................... 57
Saving the Current Route .................................. 57
Position Data Page: Marine Mode....................... 58
Understanding the Position Data Page............... 58
Position Data Page Options Menu ..................... 58
Trip Computer Page: Automotive Mode .............. 59
Understanding the Trip Computer Page ............ 59
Trip Computer Page Options Menu................... 59
Main Menu ................................... 60
Overview ............................................................. 60
Using the Main Menu........................................ 60
GPS Tab................................................................ 61
Using the GPS Tab............................................. 61
Receiver Status ............................................ 62
Differential Field ......................................... 63
GPS Tab Options Menu..................................... 63
Route Tab............................................................. 64
Using the Route Tab .......................................... 64
Route Tab Options Menu .................................. 64
Points Tab ............................................................ 65
Points Tab Overview ......................................... 65
‘User’ tab ..................................................... 65
‘Proximity’ tab ............................................. 65
Track Tab.............................................................. 66
Track Tab Overview........................................... 66
‘Active’ tab................................................... 67
‘Saved’ tab ................................................... 69
Alarms Tab ........................................................... 70
Using the Alarms Tab ........................................ 70
‘Nav’ (Navigation) Alarms............................ 71
‘System’ Alarms ........................................... 72
‘Sonar’ Alarms ............................................. 72
Celestial Tab ........................................................ 73
Using the Celestial Tab ...................................... 73
‘Tide’ tab ..................................................... 73
‘Sun & Moon’ tab........................................ 75
‘Hunt & Fish’ tab ........................................ 76
Message Tab ........................................................ 77
Viewing the Message Tab................................... 77
Display Tab .......................................................... 78
Adjusting the Display using the Display Tab...... 78
Sound Tab ............................................................ 79
Adjusting the Unit’s Sound ................................ 79
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Introduction
Setup Tab............................................................. 80
Setup Tab Overview .......................................... 80
‘System’ tab ................................................. 80
‘Road Routing’ tab ....................................... 81
‘Guidance’ tab ............................................. 82
‘Timers’ tab.................................................. 82
‘Time’ tab .................................................... 83
‘Units’ tab.................................................... 83
‘Location’ tab............................................... 84
‘Owner’ tab.................................................. 85
‘COM 1’ and ‘COM 2’ tabs .......................... 86
Appendix ...................................... 90
Specifications ...................................................... 90
Physical Specifications....................................... 90
Performance ...................................................... 90
Power................................................................ 90
Care Information ................................................. 91
Cleaning the Unit .............................................. 91
Storing the GPSMAP 276C................................ 91
Immersing the Unit in Water............................. 91
Accessories.......................................................... 92
Standard Accessories ......................................... 92
Optional Accessories ......................................... 92
Wiring and Interfacing ........................................ 94
Connecting the Power/Data Cable ..................... 94
Interfacing......................................................... 94
Map Datums and Location Formats .................... 95
What are Map Datums
and which should I use?.............................. 95
What is a Location Format
and which should I use?.............................. 95
Map Datum List ................................................... 96
Time Offsets ....................................................... 98
Messages............................................................. 99
LORAN TD Setup ................................................ 101
LORAN TD System ......................................... 101
LORAN TD Feature......................................... 101
Using the LORAN TD Format ......................... 101
Garmin Data Cards ............................................ 103
Installing and Removing Data Cards................ 103
WAAS and DGPS................................................ 104
What is WAAS? ............................................... 104
What is Differential GPS (DGPS)?.................... 104
Data Field Options............................................. 105
Compliance, License, and Warranty Information107
FCC Compliance............................................. 107
Software License Agreement ............................ 108
Product Registration and Support.................... 108
Limited Warranty ............................................ 109
Safety Information ............................................ 110
Index........................................... 112
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Getting Started
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 along with a built-in basemap and auto routing to provide you with turn-by-turn directions.
Antenna
Antenna collapses
for storage. Be sure
the antenna is up (as
shown here) to receive
satellite signals.
Battery pack. Press tab down to remove
battery pack for replacement, if necessary.
See the “Safety Information” section in the
Appendix for more information about the
Lithium-ion battery pack.
256-Color TFT display
with backlighting
Backlit keypad for easy nighttime operation
External power
connector under
weather cap
Unit Overview
USB connector
under weather cap
Serial number
Port for optional data card
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Getting Started
Unit Overview
Learning about the Keypad
Press the IN key to adjust the map scale to show a smaller area with more detail (zoom in).
Press the OUT key to adjust the map scale to show a larger area with less detail (zoom out).
Press the PAGE key to cycle the unit through the main pages in sequence and return the display from a submenu page. Press and hold for more than one second to open the Usage Mode
window, which allows you to switch between Marine Mode and Automotive Mode.
Press the QUIT key to cycle the unit through the main pages in reverse sequence, revert to the
previous value in a data entry field, or cancel an unintended function.
Press the ENTER/MARK key to select a highlighted option. When entering data, it allows you
to initiate entry, and then to accept the selected value(s). Press and hold for more than one
second to mark a waypoint.
Press the MENU key to display a menu of available options for the current page. Press the
MENU key twice to display the Main Menu.
Press the NAV/MOB key to display the Navigation Menu window. While in Marine Mode,
press and hold for more than one second to activate the Man Overboard (MOB) function.
While in Automotive Mode, press and hold for more than one second to display the Next Turn
Page and also have the voice prompt announce the next turn.
Press the FIND key to quickly search for and access user waypoints, cities, points of interest,
services and other items used for navigation.
Press and hold the POWER key for more than one second to turn the unit on and off. Briefly
press and release to adjust the backlighting and external speaker volume.
Use the ARROW KEYPAD to select (highlight) menu options and to enter data. Also use
the ARROW KEYPAD to pan the cursor on the Map Page.
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Getting Started
Charging the GPSMAP 276C
Before using the unit, you may find that you need to charge the unit. Simply plug the unit into an
external power source to charge. You can use the unit while it is charging.
Unit Overview
To charge the unit:
1. Lift the weather cap to expose the power connector on the back of the unit. Refer to the image on
page 1 for connector location.
2. Align the notches and push the plug into the connector until fully seated.
3. Plug the 12 Volt adapter into an available AC outlet, or cigarette lighter receptacle if you have a
Cigarette Lighter Adapter. Use care when routing the adapter cable being certain that it does not
interfere with vehicle operation.
4. The unit begins charging as soon as external power is applied. You can use the unit while it is
charging. Placing the unit in Charge Mode, as discussed below, charges the unit more quickly than
when the unit is turned on and reduces draw on the vehicle/boat battery.
Welcome Page
Information about the Charge Mode
Applying external power to the GPSMAP 276C automatically starts the unit for full operation. If the
battery is present and needs to be charged, the external power source charges the unit while it is in use.
If you do not want to use the unit, but you would like to charge the battery, you can put the unit into
the Charge Mode. Connect the unit to an external power supply. Press and hold the red POWER key:
Instead of completely turning off, the unit now goes into the “Charge Mode” as shown to the right.
NOTE: While in Charge Mode, the unit does draw a small amount of current from the vehicle/
boat battery. To avoid discharging the vehicle’s battery, disconnect the external power cable
from the GPSMAP 276C unit when not in use for several days.
Charge Mode
After much use, the lithium-ion battery in the unit may seem like it is not holding a charge any
longer. This is common for lithium-ion batteries. Please contact Garmin or your Garmin Dealer to order
a Battery Pack replacement if you are experiencing charging issues.
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Getting Started
Unit Overview
Turning On the GPSMAP 276C
The first time you power up your new GPSMAP 276C, the receiver must collect satellite data and
establish its present position. To ensure proper initialization, the GPSMAP 276C is shipped from the
factory in AutoLocate mode, which allows the receiver to “find itself” anywhere in the world. Before you
turn on the unit to start initialization, be sure the antenna is rotated up as shown on page 1, and that it
has a clear and unobstructed view of the sky to receive satellite signals.
To turn On and Off the GPSMAP 276C:
1. Press and hold the red POWER key. When the unit powers on, a tone sounds and a Warning/
Information Page displays.
2
To acknowledge that you have read and understand the warning, press the ENTER/MARK key to
continue.
3. To turn off the GPSMAP 276C, press and hold the red POWER key again.
Warning Page
Signal Strength Bars
Initializing the GPSMAP 276C
As soon as you turn the GPSMAP 276C on, it begins searching for satellites in your area and should
acquire a fix within a few minutes. At the top of the screen, the unit displays the status as “Acquiring
Satellites.” While viewing the GPS Tab of the Main Menu, a signal strength bar for each satellite the unit
is trying to acquire appears at the top of the screen with the satellite numbers displayed below each bar.
The progress of satellite acquisition is shown in three stages:
• No signal strength bars – the receiver is looking for the satellites indicated.
• Hollow signal strength bars – the receiver has found the indicated satellites and is collecting data.
• Solid signal strength bars – the receiver has collected the necessary data and the satellites are
ready for use.
Once the receiver has collected information from, and is fixed on, at least three satellites, the unit is
“Ready to Navigate” and the display automatically switches to the Map Page.
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Getting Started
Adjusting the Backlight and Volume
You may want to adjust the backlight to see the display better.
Unit Overview
To adjust the backlight level:
1. Press and quickly release the POWER key.
2. Press the ARROW KEYPAD UP to increase the brightness or DOWN to decrease the brightness.
Battery time remaining and power source indicator
3. Press ENTER/MARK or QUIT to close the Backlight/Volume adjustment window.
If you are using the optional External Speaker with 12/24-Volt Adapter Cable with the GPSMAP
276C, you may want to adjust the volume level of the speaker.
To adjust the speaker volume:
1. Press and quickly release the POWER key.
2. Press the ARROW KEYPAD RIGHT to increase the volume (louder) or LEFT to decrease the volume
(softer).
Backlight
Adjustment Slider
Volume
Adjustment Slider
3. Press ENTER/MARK or QUIT to close the Backlight/Volume adjustment window.
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Getting Started
Using the GPSMAP 276C
Cursor highlighting
a Field
On-screen
buttons
Field
Understanding the Features
The GPSMAP 276C unit’s advanced keypad system is designed to allow fast, convenient selection of
navigation options and data entry. As you progress through this Owner’s Manual, you will often be directed to press a specific interface key or highlight a field on the screen. When you are directed to press
a key, you should press and quickly release the key. If the key needs to be held down for a period of time
to activate a secondary function, the instructions will tell you to do so. The position of the highlight is
controlled by the ARROW KEYPAD. When a field is selected on the screen, it is highlighted in yellow.
The following features are referred to throughout this manual.
Cursor – The highlighted area on the screen that can be moved UP/DOWN/LEFT/RIGHT with the
ARROW KEYPAD to select individual fields. Moving the cursor to a given location allows you to begin
data entry or scroll through a list. A yellow highlight indicates the location of the cursor.
Field – The location on a page where data or an option may be entered and displayed. The cursor is
placed on a field using the ARROW KEYPAD to begin data entry or selection of options.
On-Screen Button – Similar to “field.” Use the ARROW KEYPAD to highlight a button and press
ENTER/MARK to select the action that corresponds to the button.
Scroll Bar – When viewing a list of items too long to display on the screen, a scroll bar appears along
the right side of the list. The position of the scroll bar indicates which portion of the list is currently
displayed. The height of the scroll bar indicates the number of items in the list. To scroll through a list,
press UP or DOWN on the ARROW KEYPAD.
Default – A system selection format built into the unit’s memory that is followed unless you change
a setting. For example, the default setting for speed readings is nautical miles per hour (knots), but may
be changed to kilometers or miles per hour. Once a setting is changed, the new setting is retained until
another change is made or a ‘Restore Default’ menu option is selected.
Scroll Bar
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Getting Started
Selecting Options and Entering Data
You may select and activate options and enter data to customize your GPSMAP 276C to fit your
personal needs. This requires movement of the cursor, which is identified in this manual as highlighting,
selecting, or choosing an item in a list or a field on the screen. Use the ENTER/MARK key and ARROW
KEYPAD to select options, enter names and numbers in data fields, and activate your selections.
Using the GPSMAP 276C
To select and activate an option:
1. With any page displayed, press the MENU key. An Options Menu appears with a list of optional
features for that page.
2. Use the ARROW KEYPAD to move the cursor UP, DOWN, RIGHT, or LEFT on the menu to highlight
your desired selection.
3. Press ENTER/MARK to activate the feature. Another window may then appear with more options. If
so, select the desired option and press ENTER/MARK again.
To exit a menu or return to the previous setting, press the QUIT key.
The QUIT key moves backwards through your steps. When pressed repeatedly, the QUIT key returns
to the main page you started from.
Selecting an option from an Options Menu
To select and activate an on-screen button:
1. On a page with on-screen buttons, use the ARROW KEYPAD to highlight the desired on-screen
button.
2. Press ENTER/MARK.
To practice entering data, try marking a waypoint and customizing one of the waypoint properties,
such as the waypoint name.
To mark your current location as a waypoint, press and hold the ENTER/MARK key until the New
Waypoint Page appears.
On-Screen Button
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Getting Started
To enter data in a data field:
Using the GPSMAP 276C
1. Use the ARROW KEYPAD to highlight the desired data field and press ENTER/MARK to activate the
field.
2. Press UP or DOWN on the ARROW KEYPAD to select characters. Press RIGHT to move to the next
character field or press LEFT to move back to the previous character field. If there are two lines of
data, keep pressing RIGHT to drop down to the next line.
TIP: To clear the entire data field, move the cursor to the left-most character field and press
LEFT once more on the ARROW KEYPAD.
3. After entering the desired data, press ENTER/MARK to confirm the change.
4. To save the waypoint and exit the New Waypoint Page, highlight ‘OK’ and press ENTER/MARK.
Or To cancel the waypoint and exit the New Waypoint Page, highlight ‘Delete’ and press ENTER/MARK.
On the New Waypoint Page, you may also enter
data to customize the Comment, Altitude, Depth,
Temperature, or Location.
Not all fields are programmable, such as the date and time. When you are on a page with fields that
are not selectable, the cursor skips over them.
Using Additional Map Data
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.
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Getting Started
To help you get to know your GPSMAP 276C, please use the Simulator Mode. Simulator Mode is also
helpful for practicing with the unit indoors or when no satellite signals are available. All waypoint and
route planning in Simulator Mode is retained in memory for future use. The following section describes
how to use simulator mode and walks you through some basic navigation using the simulator.
Simulated Basic Navigation
Activating the Simulator Mode
NOTE: Do not attempt to navigate using Simulator Mode. When the unit is set to Simulator
Mode, the GPS receiver is turned off. Any Satellite Signal Strength Bars displayed are only
simulations and do not represent the strength of actual satellite signals.
To put the unit into Simulator Mode using the Main Menu:
1. Press the MENU key twice to display the Main Menu.
2. Highlight ‘Setup’ from the vertical list of tabs.
3. On the ‘System’ tab of the Setup Tab, highlight the ‘System Mode’ field and press ENTER/MARK.
Setup Tab of Main Menu
‘System’ tab
4. Highlight ‘Simulator’ and press ENTER/MARK. Press QUIT to return to your previous display.
To put the unit into Simulator Mode using the GPS Tab:
1. Press the MENU key twice to display the Main Menu and highlight the ‘GPS’ from the vertical menu.
2. Press the MENU key to open the GPS Tab Options Menu.
3. Highlight ‘Start Simulator’ and press ENTER/MARK.
Entering a New Location
From the GPS Options Menu you can also enter a New Location to simulate from. For example, if
you are interested in using the GPSMAP 276C in your boat near San Diego but you live in Los Angeles,
you can select the San Diego coast as your New Location. Simply select ‘New Location’ from the GPS Tab
Options Menu and press ENTER/MARK. Select ‘Use Map’ and press ENTER/MARK. Then, using the
map cursor, pan to the new location and press ENTER/MARK.
When the GPSMAP 276C is in Simulator Mode,
the GPS Tab of the Main Menu displays the
satellite status as “Simulating GPS.”
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Getting Started
Simulated Basic Navigation
Simulating Navigation
The main purpose of using a GPS receiver is for navigating to a known position. To get a feel for
navigating with the GPSMAP 276C, it is a good idea to practice navigation in Simulator Mode. The following is a basic exercise for finding and navigating to a destination in Marine Mode. For this simulation
we have set our location to the San Diego coast.
To find a marine destination:
1. Be sure the GPSMAP 276C is set to Simulator Mode (see “Activating the Simulator Mode” on the
previous page).
2. Press the FIND key.
3. Highlight ‘Tide Stations’ and press ENTER/MARK.
4. Use the ARROW KEYPAD to select a nearby Tide Station and press ENTER/MARK. For our example,
we selected ‘Point Loma’.
To show simulated navigation in Marine Mode, press
UP on the ARROW KEYPAD on the Compass Page to
set a simulated speed.
5. With ‘Go To’ highlighted on the Tide Station Information Page, press ENTER/MARK.
To simulate navigation to the destination in Marine Mode:
1. Follow the steps above to find a destination tide station. The GPSMAP 276C switches to the Map
Page. A magenta line shows the direct route from your current location to your ‘Go To’ destination. If
desired, press IN or OUT to adjust the zoom level.
2. Press the PAGE key twice to display the Compass Page.
3. Press UP on the ARROW KEYPAD to increase the speed to 40 kt. (which is the desired speed setting).
4. Press QUIT to return to the Map Page. Press IN to adjust the zoom level. Observe the movement of
the position marker (triangle) as the unit simulates navigation. If desired, press PAGE or QUIT to view
the simulated navigation on the other main pages.
Simulated navigation displayed on the Map Page
(Marine Mode)
Now we will simulate navigation in the Automotive Mode. To switch between Marine and Automotive Mode, press and hold the PAGE key. Use the ARROW KEYPAD to select ‘Automotive’ and press
ENTER/MARK.
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Getting Started
To find a land destination:
1. Be sure the GPSMAP 276C is set to Simulator Mode (see “Activating the Simulator Mode”).
2. Press the FIND key.
Simulated Basic Navigation
3. Highlight ‘Cities’ and press ENTER/MARK.
4. Use the ARROW KEYPAD to select a nearby city and press ENTER/MARK. For our example, we
selected ‘National City, CA’.
5. With ‘Go To’ highlighted on the city information page, press ENTER/MARK.
To simulate navigation to the destination in Automotive Mode:
1. Follow the steps above to find a destination city. The GPSMAP 276C switches to the Map Page. A
magenta line shows the auto route from your current location to your ‘Go To’ destination. If desired,
press IN or OUT to adjust the zoom level.
2. Press QUIT to return to the Map Page. Press IN to adjust the zoom level. Observe the movement of
the position marker (triangle) as the unit simulates navigation. If desired, press PAGE or QUIT to view
the simulated navigation on the other main pages.
Simulated navigation displayed on the Map Page
(Automotive Mode)
Continue to use the Simulator to practice navigation as needed. When you are ready to navigate on
your own, don’t forget to turn the Simulator off before you start.
To turn off the Simulator:
1. Turn the unit off by pressing and holding the red POWER key.
2. Turn the unit back on by pressing and holding the red POWER key. The unit powers on in Normal
Mode.
NOTE: You can activate and deactivate the Simulator through the Setup Tab of the Main Menu
or by pressing MENU while on the GPS Tab of the Main Menu.
Simulated Current Route Page (Automotive Mode)
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Basic Operation
Main Pages Overview
Main Pages: Marine Mode and Automotive Mode
The GPSMAP 276C offers two usage modes, Marine Mode (default) and Automotive Mode, allowing you to customize settings to use the unit for both applications. The main pages are linked together
in a series that you may 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 (in both Marine
and Automotive Modes) to your preferences and/or select features that specifically relate to that page. To
view the Options Menu for any page, press the MENU key.
Marine Mode features five main pages: the Map, Compass, Highway, Active Route, and Position
Data pages. Automotive Mode features two main pages: the Map and Trip Computer pages. Optional
Highway and Compass Pages may be enabled in Automotive Mode. Two additional pages appear during
active navigation while in Automotive Mode – a Current Route Page appears if you are navigating with
turn-by-turn directions and an Active Route Page appears if you are navigating “Off Road.” See the
‘Navigation” section for more information on navigation options.
The Marine Mode is the default mode for the GPSMAP 276C. This manual first addresses the page,
such as the Map Page, as displayed in the Marine Mode. The manual then describes the page as shown
Automotive Mode.
To switch usage modes:
1. Press and hold the PAGE button.
2. Use the ARROW KEYPAD to select either ‘Automotive’ or ‘Marine’ and press ENTER/MARK.
The following examples show the main pages in Marine Mode with optional MapSource BlueChart
detailed maps.
In Automotive Mode, the main pages have a slightly different appearance. For example, some data
field defaults show data that is more appropriate for land navigation, and the Map Page and Compass
Page display turn-by-turn directions during active navigation.
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Basic Operation
Marine Mode Page Sequence
Main Pages Overview
Map Page
(Marine Mode)
Compass Page
(Marine Mode)
Highway Page
(Marine Mode)
Active Route Page
(Marine Mode)
Position Data Page
(Marine Mode)
Automotive Mode Page Sequence
Map Page
(Automotive Mode)
Optional Compass Page
(Automotive Mode)
Optional Highway Page
(Automotive Mode)
To show the Compass Page or Highway Page:
1. Press MENU twice to display the Main Menu.
Current Route Page
(Automotive Mode)
Trip Computer Page
(Automotive Mode)
NOTE: Keep in mind that in Automotive
Mode the Current Route Page only
appears during active navigation.
2. Use the ARROW KEYPAD to highlight the Display Tab.
3. Highlight the ‘Highway Page’ or ‘Compass Page’ field and press ENTER/MARK.
4. Select ‘On’ and press ENTER/MARK.
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Basic Operation
Finding an Item
Using the Find Menu
The Find Menu allows you to easily search the stored waypoints and points of interest. You can
access the Find Menu by pressing the FIND key. After you press FIND, the unit searches for items from
your current location or from another location on the map. The unit then displays the results.
The Find Menu is comprised of several default categories: Waypoints, Cities, Exits, and Tide Stations.
Additional categories are displayed depending on the optional BlueChart or MapSource data card inserted
into the unit. Your position or the map pointer must be within the map outline area to search for information from the BlueChart or MapSource data.
To find a waypoint or other item from your current location:
1. From any page, press FIND. Using the ARROW KEYPAD, highlight the desired category from the list
and press ENTER/MARK.
Find Menu
without additional BlueChart or MapSource maps installed
2. Using the ARROW KEYPAD, highlight the desired item from the list and press ENTER/MARK. 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 (Go To) the item.
To find an item from another location through the Find Menu:
1. From any page, press FIND. Using the ARROW KEYPAD, highlight the desired category from the list
and press ENTER/MARK.
2. Press MENU. Highlight ‘Near Other’ and press ENTER/MARK. If you are actively following a route,
you may also choose ‘Near Current Route’, ‘Near Next’, or ‘Near Destination’.
3. Select a reference position on the map and press ENTER/MARK. The list changes to display items
nearest to the new map position.
Naviad search result list
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Basic Operation
To find an item from another location through the Map Page:
1
From the Map Page, use the ARROW KEYPAD to pan to the desired location and press FIND.
2. Using the ARROW KEYPAD, highlight the desired category from the list and press ENTER/MARK.
Finding an Item
3. Using the ARROW KEYPAD, highlight the desired item from the list and press ENTER/MARK. 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 (Go To) the item.
Viewing the Information Page
Each item listed in the Find Menu results list has an information page. The information page displays
a variety of information about the map item.
To view details about an item:
1. With the desired item highlighted in the search results list, press ENTER/MARK.
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 notes on a
MapSource or BlueChart map, viewing a tide chart, viewing the list of maps on your data card, and
viewing the next item in the search results list.
Exit Information Page
Using the Find From Feature
The Find option also supports a “find from” feature that allows you to center your search around an
item which you have just found. For example, you search for ‘Restricted Areas’ and the search shows an
“Anchoring Prohibited” search result. If you press FIND again, you will see “From Anchoring Prohibited” as the new search from point. You may also use the Find feature to center your search from any
waypoint, route list entry, map item or tide station. Highlight the item you want to Find ‘from’, and press
the FIND key.
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Basic Operation
Finding an Item
Recently Found Page: Find History
Recently Found Items
The Recently Found page displays a list of the items you have searched for or gone to recently. Press
MENU to display the Options Menu for the ‘Recently Found Items’.
Show Find History – allows you to toggle between displaying the items you have searched for recently
(‘Find History’) and the items you have recently created a Go To for (‘Goto History’).
Remove Point – removes the point that is highlighted in the list.
Find Menu Options Menu
To view additional options for the Find Menu, press the FIND key and then press MENU. The following options are displayed:
Enable Auto Arrange – automatically arranges the Find Menu. ‘Disable Auto Arrange’ and ‘Restore
Default’ options appear when you select ‘Enable Auto Arrange’.
Near Other – allows you to select a new location from which to compile the Find items lists. Using the
ARROW KEYPAD, move the map cursor to the desired location and press ENTER/MARK.
Data Card Information – shows information about the detailed map data stored on the data card, and
allows you to select which maps are displayed or not displayed on the Map Page.
Additional selections are included in the Options Menu when you are navigating:
Near Next – compiles the Find items lists based upon the next turn in the route.
Near Destination – compiles the Find items lists based upon the route destination.
Near Current Route– compiles the Find items lists based upon the active route.
Find Menu Options
when the unit is navigating
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Basic Operation
Going to a Destination in Marine Mode
Press the NAV/MOB key in on any page to begin navigating to a destination. There are four ways
to navigate to a destination: Go To Point, Navigate Route, Navigate Track (TracBack), and MOB (Man
OverBoard) navigation. Once you are actively navigating, you will see a magenta line that always runs
from your current location to the destination on the Map page. When you are navigating in Automotive
Mode, there are more options for navigation. Please refer to the “Navigating in Automotive Mode”, which
follows this section.
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.
Navigate Track (TracBack) – allows you to select a saved track to navigate.
Stop Navigation – stops the present navigation.
MOB (Man OverBoard) – creates a Man OverBoard waypoint and navigates to that location.
Navigating in Marine Mode
Navigate Options in Marine Mode
Accessed by pressing NAV/MOB key
Go To Point
The ‘Go To’ function lets you select a destination point and quickly sets a direct course from your
present position. If you have a point highlighted on a list or on the map and press NAV/MOB, ‘Go To
<point name>’ appears in addition to ‘Go To Point’. The ‘Go To’ function can be accessed from any list of
points, the Find Menu, or graphically from the map display.
To ‘Go To’ a highlighted map item:
1. Use the ARROW KEYPAD to highlight the item you would like to navigate to on the Map Page.
2. Press NAV/MOB. ‘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. Press
ENTER/MARK.
3. Follow the magenta route created on the Map Page. You can also use the Compass Page to help you
navigate to the point.
Navigate Options
with Map Feature highlighted
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Basic Operation
To activate a ‘Go To’ from the Find Menu:
Navigating in Marine Mode
1. Press the NAV/MOB key.
2. Use the ARROW KEYPAD to highlight ‘Go To Point’ and press ENTER/MARK. The Find Menu opens.
3. From the Find Menu, highlight ‘Waypoints’ and press ENTER/MARK. (You may also choose to go to
other points, such as Cities or Tide Stations from this list. The steps vary only slightly from those listed
for the waypoint.)
4. Select a waypoint from the list then press ENTER/MARK to display the Waypoint Review Page.
5. The Waypoint Review Page automatically opens. With the ‘Go To’ button highlighted, press ENTER/
MARK to begin navigation.
Navigate Route
The ‘Navigate Route’ option allows you to easily select a route from a list.
Waypoint Review Page
Activating a Go To using the Find Menu
To navigate a route:
1. Press the NAV/MOB key.
2. Use the ARROW KEYPAD to highlight ‘Navigate Route’ and press ENTER/MARK.
3. Use the ARROW KEYPAD to highlight the desired route and press ENTER/MARK.
The Active Route Page automatically opens. With the ‘Go To’ button highlighted, press ENTER/MARK
to begin navigation.
To stop route navigation:
1. Press the NAV/MOB key.
2. Highlight ‘Stop Navigation’ and press ENTER/MARK.
For information about creating routes, refer to the “Using Routes” section later in this chapter.
Select Route
Select desired route from list
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Basic Operation
Navigate Track (TracBack Navigation)
The TracBack function allows you to retrace your path using the track log automatically stored in
the receiver’s memory, which eliminates the need to store waypoints along the way. TracBack routes are
created by reducing your track log into a route of up to 300 turns and activating an inverted route along
those points. Once activated, a TracBack route leads you back to the oldest stored track log point, so it
is a good idea to clear the existing track log before you start your current trip. You must have saved an
active track log (Saved Track) before you can navigate that route (TracBack).
For more information on setting up the Track options and saved tracks, see the “Track Tab” section.
Navigating in Marine Mode
To save the entire track log:
1. Press the MENU key twice to open the Main Menu.
2. Use the ARROW KEYPAD to highlight ‘Track’ from the vertical menu, then highlight the ‘Active’ tab to
the right.
3. Use the ARROW KEYPAD to select ‘Save’ and press ENTER/MARK.
Clearing the track log
4. A window pops up asking if you want to save the entire track log. To save the entire track, highlight
‘Yes’ and press ENTER/MARK.
To activate a TracBack using the NAV/MOB key:
1. Press the NAV/MOB key, then highlight the ‘Navigate Track’ option and press ENTER/MARK.
2. Highlight the track you wish to navigate and press ENTER/MARK.
3. Use the Arrow Keypad to select the point to which you want to navigate (TracBack to) and press
ENTER/MARK.
To stop TracBack navigation:
1. Press the NAV/MOB key.
Saving the entire track
2. Highlight ‘Stop Navigation’ and press ENTER/MARK.
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Basic Operation
Navigating in Marine Mode
Navigate Options
Accessed by pressing NAV/MOB key
Once a TracBack has been activated, the GPSMAP 276C divides the track into segments called ‘legs’.
Up to 300 temporary ‘turns’ are created to mark the most significant features of the track in order to
duplicate your exact path as closely as possible. To get the most out of the TracBack feature, remember
these tips:
• Always clear the track log at the point that you want to go back to (such as a dock or camp site).
• There must be at least two track log points stored in memory to create a TracBack route.
• The ‘Record Mode’ option on the ‘Active’ tab of the Track Tab must be set to ‘Fill’ or ‘Wrap’.
• If the track log ‘Interval’ option on the ‘Active’ tab is set to the ‘Time’ option, the route may not
Navigate your exact path (keep the interval set to ‘Resolution’ for best performance).
• If the receiver is turned off or satellite coverage is lost during your trip, the TracBack draws a
straight line between any point where coverage was lost and where it resumed.
• If the changes in distance and direction of your track are too complex, 300 waypoints may not
mark your path accurately. The receiver then assigns the 300 waypoints to the most significant
points of your track and simplifies segments with fewer changes in direction.
Man OverBoard (MOB)
The Man OverBoard function (MOB) lets you simultaneously mark your present position and create a
direct route back to that position for quick response to emergency situations.
To activate the MOB function:
1. Press and hold the NAV/MOB key, or press the NAV/MOB key twice.
2. Press ENTER/MARK to confirm and begin navigating to the MOB position.
Man OverBoard confirmation screen
Once a MOB has been activated, an ‘MOB’ waypoint with an international MOB symbol is created
and the unit begins actively navigating to that point. Use any of the Navigation Pages to guide you back
to the MOB point. The MOB waypoint is stored in the waypoint list and may be deleted like any other
waypoint.
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Basic Operation
Going to a Destination in Automotive Mode
Press the NAV/MOB key in on any page to begin navigating to a destination. Automotive Mode provides the basic options as offered while navigating in Marine Mode, as well as several other options that
are especially helpful while you are navigating in Automotive Mode.
New Route – functions the same as ‘Go To Point’ in Marine Mode navigation. 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.
Navigate Track (TracBack) – allows you to select a saved track to navigate.
Resume Navigation – restarts the present navigation.
The following options are also available when you press NAV/MOB while you are navigating a route.
Recalculate – initiates route recalculation based on your selection of ‘Faster Time’, ‘Shorter Distance’, or
‘Off Road’.
Detour – creates a detour based upon the distance you select (‘1/2 mile’, ‘1 mile’, ‘2 miles’, ‘5 miles’, or
‘15 miles’). (Only displayed when you are navigating.) Press NAV/MOB again and select ‘Cancel Detour’
to end the detour.
Edit Vias – allows you to add points to travel through before you get to your destination. These are
really helpful when looking for a gas station and planning an entire leg of a road trip.
Stop Navigation – stops the present navigation.
New Route
The ‘New Route’ option works the same as the ‘Go To’ function in Marine Mode. You can select a
destination point from the Find Menu, and the unit quickly sets a direct course from your present position. If you have a point highlighted on a list or on the map and press NAV/MOB, ‘Go To <point name>’
appears in the Navigate List.
Refer to the ‘Navigating in Marine Mode” section previously found in this manual.
Navigating in Automotive
Mode
Navigate Options in Automotive Mode
with Map Feature highlighted
Accessed by pressing NAV/MOB key
Navigate Options in Automotive Mode
while navigating in Automotive Mode
Accessed by pressing NAV/MOB key
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Basic Operation
Navigating in Automotive
Mode
Add/Edit Vias Page
Navigate Route
The ‘Navigate Route’ option allows you to easily select a route from a list. Refer to the ‘Navigating in
Marine Mode” section previously found in this manual. Also refer to the “Using Routes” section.
Navigate Track (TracBack Navigation)
The TracBack function allows you to retrace your path using the track log automatically stored in the
receiver’s memory, which eliminates the need to store waypoints along the way. Refer to the ‘Navigating
in Marine Mode” section previously found in this manual. Also refer to the “Track Tab” section for more
information on setting up the Track options and saved tracks.
Edit Vias
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. They are
really helpful when planning a long trip.
To add via points to your route:
1. While navigating your route, press the NAV/MOB key. The Navigate menu opens.
2.
Use the ARROW KEYPAD to select ‘Edit Vias’ and press ENTER/MARK.
3. From the pop-up window, highlight either ‘Use Map’ or ‘Find’ and press ENTER/MARK.
4. If you selected ‘Use Map’, use the ARROW KEYPAD to select the desired item on the map and press
ENTER/MARK.
Add/Edit Vias Page
showing a via point before the destination
If you selected ‘Find’, select an item from the Find Menu as discussed in the “Finding an Item” section
found previously in this manual. Remember you can press the MENU key while the Find Menu is
open to find an item near another location, such as the destination.
5. The new point is added to the route as displayed in the Add/Edit Vias Page. Continue steps 2 through
4 until you have added all of the vias that you want. Highlight ‘Done’ and press ENTER/MARK to
apply the new vias to the route.
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Basic Operation
Creating a Route
The Garmin GPSMAP 276C lets you create and store up to 50 reversible routes, with up to 300
waypoints each. Routes can be created in two ways. The first way is to select waypoints from the
Find Menu, allowing you to see a list of the route points as you create the route. The second way is by
selecting waypoints or map items from the Map Page, allowing you to see each route point graphically
on-screen as you create the route.
Using Routes
To create a route using the Find Menu:
1. Press the MENU key twice to display the Main Menu page.
2. Use the ARROW KEYPAD to highlight ‘Route’ from the vertical list of tabs.
3. Press the MENU key to display the Route Options Menu. Select ‘New Route’ and press ENTER/
MARK.
Or Highlight the first available blank route slot and press ENTER/MARK.
Creating a new route
4. The Route Review Page automatically opens, displaying a blank route. Press ENTER/MARK to find
items to add to the route.
5. The Find Menu opens. Using the methods discussed in the “Finding an Item” section of this manual,
select waypoints and/or points of interest to add to your route. When the item information page is
open, highlight ‘OK’ and press ENTER/MARK to add the point to the route. Repeat until you have
added all of the points to the route.
Creating a new route on Route Review Page
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Basic Operation
To create a route graphically:
Using Routes
1. Press the MENU key twice to display the Main Menu Page. Use the ARROW KEYPAD to highlight
‘Route’ from the vertical list of tabs.
2. Press the MENU key to display the Route Options Menu. Select the ‘New Route’ option and press
ENTER/MARK.
Or Highlight the first blank slot in the Route List page and press ENTER/MARK.
3. On the Route Review Page, press the MENU key to open the Route Review Page Options Menu.
4. Use the ARROW KEYPAD to highlight ‘Edit on Map’ and press ENTER/MARK.
Route Review Page Options Menu
5. Use the ARROW KEYPAD to highlight the desired map item and press ENTER/MARK. If you have
selected an area of the map that is not a feature or waypoint, a new waypoint is created for that
location. Press ENTER/MARK 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. Refer to the “Using Waypoints” section of this manual for more information.
Repeat until you have added all points to the route. As you add each point to the route, the top
of the map shows the waypoint/map item name, bearing and distance from your location, and
coordinates of the cursor. The bottom of the map displays the number of available and used points. A
route line appears on the map to indicate each completed leg, and a dotted line appears to indicate
the distance and bearing from the last route waypoint to the map pointer location.
6. When finished press QUIT twice to return to the Route Review Page. Or, press MENU, highlight ‘Edit
as Text’ and press ENTER/MARK to view the Route Review Page.
Creating a new route on the map
Route Tab Options Menu
The Route Tab displays all the routes currently stored in memory, along with a descriptive name for
each route. Access the Route Tab Options Menu by pressing the MENU button on the Route Tab. For
more information, refer to the “Route Tab” section later in this manual.
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Basic Operation
Active Route Page
Whenever you have activated a route in the GPSMAP 276C, the Active Route Page shows each point
(waypoint or map item) of the active route. 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 first. Refer to the “Route Tab” section of this guide for complete information.
Using Routes
Route Review Page
Once you have created a route, the Route Review Page allows you to edit a selected route.
To open to the Route Review Page:
1. Press MENU twice and highlight ‘Route’ from the vertical list of tabs.
2. Use the ARROW KEYPAD to highlight the name of the desired route and press ENTER/MARK.
To enter a custom route name:
By default the name includes the first and last waypoints in the route.
Route List Page
1. From the Route Review Page, highlight the name field and press ENTER/MARK to begin editing.
2. Use the ARROW KEYPAD to enter up to a 15-character name and press ENTER/MARK.
To review individual route points:
1. From the Route Review Page, highlight the desired point and press ENTER/MARK.
2. On the Point Review window, you may 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/MARK. If the route point is a user waypoint, you may edit any of the waypoint properties on
the Waypoint Review Page (see the “Waypoint” section in the “Basic Operation” chapter for details).
Once you are back on the Route Review Page, the next point in the route is automatically highlighted.
This allows you to review each point on the route by pressing ENTER/MARK repeatedly.
Route Review Page
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Basic Operation
Using Routes
Route Review Options Menu
Route Review Options Menu
By pressing MENU on the Route Review Page, the following menu options are available:
Activate – begins navigation of the route.
Edit on Map – allows you to edit the route on the map.
Insert Waypoint – inserts a waypoint (or point from the Find Menu) before the highlighted waypoint or
add a point(s) onto the end of the route.
Remove Waypoint – deletes the selected waypoint from the route.
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.
Delete Route – deletes the entire route.
Change Data Fields – allows you to customize the data fields displayed on the Route Review Page.
To edit the route on the map:
1. Press MENU twice to open the Main Menu. Use the ARROW KEYPAD to select ‘Route’ from the
vertical menu of tabs.
2. Use the ARROW KEYPAD to select the desired route and press ENTER/MARK. Press MENU.
3. Highlight ‘Edit on Map’ and press ENTER/MARK.
4. Use the ARROW KEYPAD to select a location on the magenta route (the route turns bright red when
the cursor is over the route) and press ENTER/MARK.
5. Use the ARROW KEYPAD to drag the route to the new point location and press ENTER/MARK.
Editing the route on the map
6. The New Waypoint Page opens. Edit the waypoint as desired, highlight ‘OK’, and press ENTER/
MARK.
7. Repeat steps 4 through 6 until all desired points are added to the route. Press QUIT when finished.
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Basic Operation
To add points to the route using the Route Review Page and the Find Menu:
1. Press MENU twice to open the Main Menu. Use the ARROW KEYPAD to select ‘Route’.
2. Use the ARROW KEYPAD to select the desired route and press ENTER/MARK.
Using Routes
3. Use the ARROW KEYPAD to highlight the spot in the route that you want to add the new point. (The
new point is added before the highlighted route point.) Press MENU.
4. Highlight ‘Insert Waypoint’ and press ENTER/MARK.
5. The Find Menu automatically opens for you to search for and select the waypoint or point of interest
you want to add to the route.
6. In the point Review Page, press ENTER/MARK when ‘OK’ is highlighted to add the new point to the
route.
To use the Trip Planning feature:
1. Press MENU twice to open the Main Menu. Use the ARROW KEYPAD to select ‘Route’.
Route Review Page Options Menu
2. Use the ARROW KEYPAD to select the desired route and press ENTER/MARK.
3. Press MENU. Highlight ‘Plan Route’ and press ENTER/MARK.
4. Enter the desired data for Speed, Fuel Flow, Departure Time, and Departure Date. Press QUIT to
return to the Route Review Page.
NOTE: Fuel flow rates on your unit are measured in “units per hour”. System setting changes
for units of measure (statute, nautical or metric) do not affect the fuel flow measure. You
should enter fuel flow rates based upon available information for your vehicle (such as the
operator’s manual or performance specifications) and make note of the desired units of measure (such as gallons or liters).
Following a Route
Once a route has been created, it can be activated and used for navigation with the NAV/MOB key.
Refer to the previous pages for more information.
Creating a new route on the map
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Basic Operation
Using Waypoints
New Waypoint Page
Creating and Using Waypoints
The Garmin GPSMAP 276C stores up to 3000 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 key – allows you to quickly mark your present position.
• Graphically – allows you to define a new waypoint position from the map display using the ARROW KEYPAD.
• Text Entry – allows you to enter a new waypoint’s position coordinates manually.
Marking Your Present Position
The Garmin GPSMAP 276C’s ENTER/MARK key lets you quickly capture your present position to
create a new waypoint. You must have a valid position (2D or 3D) fix to mark your present position.
This can be determined by looking at the GPS Tab on the Main Menu.
To mark your present position:
1. Press and hold the ENTER/MARK key until the New Waypoint Page appears, then release it. You will
see a default four-digit name and symbol for the new waypoint.
2. To accept the waypoint with the default name and symbol, use the ARROW KEYPAD to highlight ‘OK’
and press ENTER/MARK.
To change the any information on the New Waypoint Page, highlight the appropriate field and press
ENTER/MARK. After entering and confirming your changes, highlight ‘OK’ and press ENTER/MARK.
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Basic Operation
Creating Waypoints Graphically
Waypoints may also be quickly created with the Map Page cursor, which allows you to ‘point and
shoot’ at any map position or map feature to create a new waypoint. When you move the cursor over a
map item, you will see a highlighted description of that item. The GPSMAP 276C uses the map item text
shown on the cartography as the default name and symbol for the new waypoint.
Using Waypoints
To create a new waypoint using the Map Page:
1. Press PAGE until the Map Page is displayed.
2. Use the ARROW KEYPAD to move the cursor to the desired map position or map feature.
3. Press and quickly release the ENTER/MARK key to capture the cursor position. Pressing and holding
ENTER/MARK will mark your present position, not the map cursor’s location.
If you have highlighted a map feature, an information page is displayed after you press ENTER/
MARK. Use the ARROW KEYPAD to highlight ‘Save’ and press Enter/Mark to save the item as a
waypoint.
Map Feature Information Page
Select ‘Save’ to save feature as a waypoint
4. The New Map Waypoint Page appears. To accept the waypoint with the default name and symbol,
highlight ‘OK’ and press ENTER/MARK.
To change the any information on the New Map Waypoint Page, highlight the appropriate field and
press ENTER/MARK. After entering and confirming your changes, highlight ‘OK’ and press ENTER/
MARK.
New Waypoint Page
New Waypoint Page for map feature shown above
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Basic Operation
Using Waypoints
Additional Options for Creating Waypoints
Waypoints may also be created by manually entering position coordinates through the Points Tab of
the Main Menu. This method can be useful for creating a waypoint at a specific latitude/longitude position from a chart. You can also manually change the location coordinates in the New Waypoint Page to
create a new waypoint.
To create a waypoint through the Main Menu:
1. Press MENU twice to display the Main Menu.
2. Use the ARROW KEYPAD to highlight the ‘Points’ from the vertical list of tabs and press MENU.
3. Highlight ‘Create Waypoint’ and press ENTER/MARK.
To change the any information on the New Waypoint Page, highlight the appropriate field and press
ENTER/MARK. After entering and confirming your changes, highlight ‘OK’ and press ENTER/MARK.
Points Tab Options Menu
Creating a waypoint through the Points Tab of the Main Menu
To create a new waypoint by entering location coordinates:
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 know position as the default
name and position.
2. Use the ARROW KEYPAD to highlight the ‘Location’ field and press ENTER/MARK. Use the ARROW
KEYPAD to enter the desired position coordinates and press ENTER/MARK when finished.
To change any of the other information on the New Waypoint Page, highlight the appropriate field
and press ENTER/MARK. After entering and confirming your changes, highlight ‘OK’ and press
ENTER/MARK.
To change the location of a waypoint, highlight the character
you want to change in the Location field. Press UP or DOWN
on the ARROW KEYPAD to change the character.
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Basic Operation
To create a new waypoint by projecting its location:
A waypoint may also be created by “projecting” the distance and bearing from a specific location to a
new location.
Using Waypoints
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 know position as the default
name and position.
2. Press MENU to open the New Waypoint Page Options Menu.
3. Use the ARROW KEYPAD to highlight ‘Project Location’ and press ENTER/MARK.
4. To change the location from which you are projecting the new waypoint, highlight the ‘From’ field
and press Enter/Mark. The Find Menu opens. Select the point from which you will project you new
waypoint just as you would select a waypoint or point of interest. For more information see the
“Finding an Item” section in the “Basic Operation” chapter.
To adjust the distance that the new waypoint will be projected beyond the original waypoint,
highlight the ‘Distance’ field and press ENTER/MARK. Use the ARROW KEYPAD to adjust the
distance and press ENTER/MARK.
New Waypoint Options Menu
To adjust the bearing that the new waypoint will be projected from the original waypoint, highlight
the ‘Bearing’ field and press ENTER/MARK. Use the ARROW KEYPAD to adjust the bearing and
press ENTER/MARK.
When you have adjusted all elements of the projected location, highlight ‘OK’ and press ENTER/
MARK.
5. Make any other desired changes to the new waypoint data (such as the name or symbol), then
highlight ‘OK’ and press ENTER.
Project Location Menu
Enter the desired distance, bearing, and location to project from
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Basic Operation
Using Waypoints
Waypoint Menu Options
As well as ‘Project Location’, two additional options are available by pressing MENU on the New
Waypoint and New Map Waypoint Pages: ‘Average Location’ and ‘Append To Route’. These menu options also appear on the Waypoint Edit and Waypoint Review Pages. Select ‘Average Location’ to have
the unit take several sample location measurements for the waypoint and recalculate for a more accurate
position reading. Select ‘Append to Route’ to add the new waypoint to the end of a route.
To calculate the average location:
1. Select ‘Average Location’ from the Options Menu.
2. The ‘Average Location’ screen appears. Watch as the fields change as the unit calculates the average
position of the waypoint. When you are satisfied with the average location, press ENTER/MARK.
To append a new waypoint to a route:
Average Location Page
1. Select ‘Append To Route’ from the Options Menu.
2. The ‘Select Route’ screen appears. Highlight the desired route or select ‘New Route’ and press
ENTER/MARK.
3. With ‘OK’ highlighted, press ENTER/MARK to save the waypoint.
Select Route Tab
After selecting ‘Append to Route’ from the Options
Menu, the Select Route Tab opens for you to select the
route to add this waypoint to.
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Basic Operation
Reviewing and Editing Waypoints
Once you have created and stored a waypoint, it may be modified, reviewed, renamed, moved, or
deleted at any time through the Waypoint Review and Waypoint Edit Pages.
Using Waypoints
To access the Waypoint Review Page:
1. Use the ARROW KEYPAD to highlight the desired waypoint on the Map Page.
2. Press ENTER/MARK to display the Waypoint Review Page. If the waypoint is located on a map
feature, or MapSource or BlueChart feature, the Waypoint Review Page includes additional
information tabs about the other features at that location.
To access the Waypoint Edit Page:
1. Press MENU twice to view the Main Menu.
2. Use the ARROW KEYPAD to highlight ‘Points’ from the vertical list of tabs, then highlight the desired
waypoint from the ‘User’ or ‘Proximity’ tabs.
Waypoint Review Page
3. Press ENTER/MARK to display the Waypoint Edit Page. If the waypoint is located on a map feature,
or MapSource or BlueChart feature, the Waypoint Edit page will NOT display the details of the other
map features.
From the Waypoint Review and Edit pages, you may change the name, symbol, comment, position
coordinates, or depth for the selected waypoint.
To change the waypoint name:
1. Highlight the waypoint name field and press ENTER/MARK.
2. Use the ARROW KEYPAD to enter a new name and press ENTER/MARK when done.
To change the waypoint symbol:
1. Highlight the waypoint symbol field to the left of the waypoint name and press ENTER/MARK.
Waypoint Edit Page
2. Use the ARROW KEYPAD to select the desired symbol and press ENTER/MARK when done.
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Basic Operation
To change the other waypoint elements:
Using Waypoints
1. Highlight the desired field and press ENTER/MARK.
2. Use the ARROW KEYPAD to edit/enter the data. Press ENTER/MARK when done.
On the Waypoint Review and Waypoint Edit Pages, you may also delete the selected waypoint, view
the waypoint on the map, and move the waypoint on the map.
To delete a waypoint:
1. On the Waypoint Review/Waypoint Edit Page, use the ARROW KEYPAD to highlight ‘Delete’ and
press ENTER/MARK. With ‘OK’ highlighted, press ENTER/MARK again to confirm the deletion.
To view the waypoint on the map:
1. From the Waypoint Review/Waypoint Edit Page, highlight ‘Show Map’.
Waypoint Review Page
2. Press ENTER/MARK. The waypoint is highlighted on a map with an information window at the top
that shows the waypoint name, position and distance and bearing from your current position.
On the ‘Show Map’ map display, two additional options are available by pressing MENU:
Measure Distance – allows you to measure the distance and bearing between two points on the map
(see the “Points” section of the “Main Menu” chapter for more information).
Point to on Main Map – returns to the highlighted waypoint on the Map Page (exits the Waypoint
Review/Waypoint Edit Page).
Waypoint Edit Page
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Basic Operation
Points Tab
The Points Tab of the Main Menu features two tabs, ‘User’ and ‘Proximity’, that let you manage a large
number of waypoints quickly and efficiently. The tabs also provide a continuously updated proximity
waypoint alarm function that can be used to define an alarm circle around things like submerged hazards
or shallow waters.
Using Waypoints
To access the Points Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Points’ from the vertical list of tabs using the ARROW KEYPAD.
‘User’ tab
The ‘User’ tab displays a master list of all waypoints currently stored in memory. From the ‘User’
list, you may review, edit, rename, or delete individual waypoints or delete all user waypoints. The total
number of stored and available waypoints is displayed at the bottom of the ‘User’ tab, with the stored
waypoints arranged in numerical/alphabetical order.
‘User’ tab of the Points Tab in the Main Menu
To scroll through and review the waypoint list:
1. With the ARROW KEYPAD, highlight ‘Points’ on the Main Menu, then highlight the ‘User’ tab.
2. Use the ARROW KEYPAD to scroll through the list in the desired direction.
3. Press ENTER/MARK to review the highlighted waypoint on the ‘Waypoint Edit’ page. See the
previous pages for detailed information on reviewing and editing waypoints.
To activate a ‘Go To’ from the ‘User’ tab:
1. Access the ‘User’ tab of the Points Tab.
2. Use the ARROW KEYPAD to highlight the desired waypoint and press ENTER/MARK.
3. Highlight ‘Go To’ and press ENTER/MARK.
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Basic Operation
Using Waypoints
The following options are available by pressing MENU in the ‘User’ tab:
Create Waypoint – creates a new waypoint (see the previous pages).
Delete Waypoint – deletes selected waypoint from list and any route in which it was used.
Delete By Symbol – deletes all waypoints that use the same symbol.
Delete By Distance – deletes all waypoints that are a specific distance from a specific location.
Delete All – deletes all waypoints from the unit.
NOTE: Once a waypoint is deleted from the list, it cannot be recovered from the unit. It is
advisable to backup important waypoints to a computer using the optional PC cable and interface software or write them down by hand.
User Points Options Menu
To delete a waypoint from the ‘User’ tab:
1. From the ‘User’ tab of the Points Tab, use the ARROW KEYPAD to highlight the waypoint to be
deleted.
2. Press MENU, then highlight ‘Delete Waypoint’ and press ENTER/MARK.
Or Press ENTER/MARK to open the Waypoint Edit Page. Highlight ‘Delete’, and press ENTER/MARK.
3. Press the ENTER/MARK key to confirm the deletion warning.
To delete waypoints by symbol:
1. From the ‘User’ tab, highlight the waypoint to be deleted and press MENU.
2. Highlight ‘Delete By Symbol’ and press ENTER/MARK.
3. Use the ARROW KEYPAD to highlight the symbol of the waypoint(s) to be deleted and press ENTER/
MARK.
4. Highlight ‘OK’ and press ENTER/MARK to confirm. Choose ‘Cancel’ or press QUIT to stop the
deletion.
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Basic Operation
To delete waypoints by distance:
1. From the ‘User’ tab, highlight the waypoint to be deleted and press MENU.
2. Highlight ‘Delete By Distance’ and press ENTER/MARK.
Using Waypoints
3. Select ‘Less Than’ or ‘More Than’ and enter the desired distance using the ARROW KEYPAD.
4. If desired, you can select a waypoint or point of interest as the ‘From’ location. Highlight the ‘From’
field and press ENTER/MARK. From the Find Menu, select the desired location and press ENTER/
MARK. When ‘OK’ is highlighted, press ENTER/MARK.
5. Highlight ‘Delete’ and press ENTER/MARK to delete all waypoints within the set location. Choose
‘Cancel’ or press QUIT to stop the deletion.
To delete all user waypoints:
1. Press the MENU key to select the options window.
2. Use the ARROW KEYPAD to highlight ‘Delete All’ and then press ENTER/MARK.
User Points Options Menu
3. Highlight the ‘OK’ prompt and press ENTER/MARK to confirm. Be sure you want to delete the
waypoints before you press ENTER/MARK. You cannot recover deleted waypoints.
4. You will then be asked if you would like to delete all Route Waypoints too. Highlight the ‘OK’ prompt
and press ENTER/MARK to confirm or highlight ‘Cancel’ and press ENTER/MARK to not delete Route
waypoints. Selecting ‘Cancel’ at this time will not cancel out of the waypoint deletion. It simply
retains waypoints used in routes.
NOTE: Once a waypoint is deleted from the list, it cannot be recovered from the unit. It is
advisable to backup important waypoints to a computer using the optional PC cable and interface software or write them down by hand.
Deleting waypoints based on distance
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Basic Operation
Using Waypoints
‘Proximity’ tab
The ‘Proximity’ tab of the Points Tab lets you define an alarm circle around a stored waypoint
position. The alarm circle can be used to help you avoid reefs, rocks, or restricted waters. Up to ten
waypoints may be listed with a maximum alarm radius of 99.99 nautical miles, statute miles, or kilometers.
If a proximity alarm circle overlaps with an existing alarm circle, a ‘Proximity Overlaps Another Proximity Waypoint’ message appears. Since 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.
To turn proximity alarms on or off:
‘Proximity’ tab
1. From the ‘Proximity’ tab of the Points Tab, use the ARROW KEYPAD to highlight the field below
‘Proximity Alarm’ and press ENTER/MARK.
2. Select the desired ‘ON’ or ‘OFF’ setting and press ENTER/MARK.
To add a proximity waypoint:
1. From the ‘Proximity’ tab of the Points Tab, use the ARROW KEYPAD to highlight an empty line on the
Proximity List and press ENTER/MARK. The Find screen appears.
2. Select the desired waypoint or point of interest from the Find screen. With ‘OK’ highlighted, press
ENTER/MARK to select that point. (For complete information about selecting waypoints or points of
interest from the Find screen, see “Finding an Item”.)
3. The distance field is now highlighted. Press ENTER/MARK to begin entry of the proximity radius.
4. Use the ARROW KEYPAD to enter a distance value (up to 99.99 units) and press ENTER/MARK.
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Basic Operation
The following options are available by pressing MENU on the ‘Proximity’ tab of the Points Tab:
Remove Point – removes selected waypoint from the proximity list.
Remove All – removes all waypoints from the proximity list.
Using Waypoints
To clear one or all proximity waypoint(s) from the list:
1. Open the ‘Proximity’ tab of the Points Tab.
2. Use the ARROW KEYPAD to highlight the proximity waypoint to clear and press MENU.
3. To clear a single alarm, highlight the ‘Remove Point’ option and press ENTER/MARK.
To clear all proximity waypoints, select the ‘Remove All’ option and press ENTER/MARK.
4. Use the ARROW KEYPAD to highlight the ‘OK’ prompt and press ENTER/MARK to confirm.
‘Proximity’ tab
Deleting waypoints based on distance
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Main Pages
Map Page
Water
Navaids
Current Location
Land
Data Fields
Map Scale
Map Page (Marine Mode)
shown with optional BlueChart data
Using the Map Page
The Map Page provides a comprehensive display of electronic cartography, plotting, and navigational
data. When using the unit with optional MapSource BlueChart data (in Marine Mode), the map display
shows your location on a digital chart, complete with geographic names, map items, navaids and a host
of other chart features. In Automotive Mode, more detailed map features are available with other optional MapSource data, such as City Select. The Map Page also plots your track and displays any routes
and waypoints you create. An on-screen cursor lets you pan and scroll to other map areas, determine the
distance and bearing to a position, and perform various route and waypoint functions.
Two basic map operating modes, position mode and cursor mode, determine what cartography is
shown on the map display. Position mode pans the cartography to keep the present position marker
within the display area. The position marker is the black triangle vehicle icon that shows your travel
on the Map Page. The GPSMAP 276C always powers up in the position mode, with the last known location centered on the map display.
The GPSMAP 276C enters cursor mode when the ARROW KEYPAD is pressed. Cursor mode pans
the cartography to keep the cursor within the display area. The cursor is the white pointer arrow icon
used for panning around the Map Page. When the cursor is active, an additional data window appears at
the top of the screen to indicate the position, range, and bearing to the cursor or a selected waypoint or
map item.
Map Page (Automotive Mode)
shown with optional MapSource data
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Main Pages
Panning the Map with the Cursor
The cursor allows you to pan away from your present position and scroll to other map areas around
the world (even outside of your current detail coverage). As you pan past the edge of the current map
display, the screen actively scrolls to provide continuous map coverage (keep in mind that the vehicle
icon stays in your present location and may not be visible on the display screen when you pan the map).
Map Page
To move the cursor:
1. Press UP, DOWN, RIGHT, or LEFT on the ARROW KEYPAD.
2. Press QUIT to return the cursor to your current location.
As you move the cursor, the distance and bearing from your present position to the cursor is
displayed in the data window, along with the cursor’s position coordinates. When you zoom in cursor
mode, the cursor stays centered on the screen. When the cursor is stationary, a fixed coordinate position
appears in the position field, and the distance and bearing from your present position changes as your
vehicle moves.
Panning the Map
Map feature highlighted
To re-center your position on screen:
1. When you are finished panning the Map, press the QUIT key.
2. The unit automatically returns to position mode.
The cursor may also be used to “snap” to on-screen waypoints and map items, allowing you to review
a selected position or feature directly from the map display.
To select an on-screen waypoint or map item with the cursor:
1. Use the ARROW KEYPAD to move the cursor to the desired waypoint or map item. If there are
several items grouped closely together, zoom in closer for a better view.
2. When a waypoint or map item is selected, it is highlighted on screen with the name and position
displayed at the top of the screen, along with the distance and bearing from your current location.
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Main Pages
To view additional details about an on-screen waypoint or map item:
Map Page
1. With the desired waypoint or map item highlighted, press ENTER/MARK.
2. If the item is a waypoint, a Waypoint Review Page appears, showing details such as name, symbol,
coordinates, elevation, and depth. On-screen buttons offer options to delete the waypoint (‘Delete’),
show the waypoint on a map (‘Show Map’), or begin navigation to the waypoint (‘Go To’) from your
current location. If desired, select an on-screen button and press ENTER/MARK, or press QUIT to exit
the Waypoint Review Page.
If the item is a map feature or a feature of BlueChart or other MapSource data, an Information page
appears, showing details about the feature. On-screen buttons offer options to save the item as a
waypoint (‘Save’), show the item on a map (‘Show Map’), or begin navigation to the item (‘Go To’)
from your current location. If desired, select an on-screen button and press ENTER/MARK, or press
QUIT to exit the Information page.
Panning the Map
Map feature highlighted
In some cases, additional information tabs appear at the top of the Information page or Waypoint
Review Page. If desired, use the ARROW KEYPAD to highlight the extra tabs and view the information.
Map Feature Information Page
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Main Pages
Selecting Map Scales and Additional Maps
The map display has 28 available range scales from 20 ft. to 800 nm. (20 ft. to 800 mi or 5 m to 1200
km). The map scale is controlled by the IN and OUT keys, with the current scale displayed at the bottom right of the data window.
Map Page
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 to 20 mi, with more detailed coverage available through
the use of the optional BlueChart or MapSource data. The GPSMAP 276C displays cartography as long as
there is chart information available for the range you have selected.
Map coverage conforms to the following conditions:
• Cartography is displayed when the selected zoom range is covered by either the internal
basemap, BlueChart, or other MapSource data.
• When the selected zoom range is covered by both the internal database and BlueChart/
MapSource data, the cartography with the best resolution is displayed.
• When the selected zoom range exceeds the resolution of the data in use, an “overzoom” warning
appears below the map scale.
• When MapSource data is displayed, a “map card” label appears below the map scale.
Using Built-in Basemap
Using Map Card Data
Overzoom: No additional data available
NOTE: The scale value represents
the distance from one end of the
scale bar to the other.
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Main Pages
Map Page
Map Page Options Menu
The Options Menu on the Map Page provides access to functions and features of the Map Page, as
well as layout options for the page. The data window, located at the right side of the display, provides a
user-selectable layout of various types of useful data. Each data field may be configured to display any
one of several data options. The data window layout may also be customized to change the actual size of
the data displayed.
To display the Map Page Options Menu:
1. Press PAGE repeatedly until the Map Page is displayed.
2. Press MENU.
Map Page Options Menu (Marine Mode)
Measure Distance
The available options described below. In the sections following, some options, such as Measure Distance, also have instructions detailing how to use the option. The Options Menu varies slightly between
the Marine Mode and Automotive Mode.
Declutter On/Off – toggles between showing spot soundings and map outlines for easier viewing.
Measure Distance – allows you to measure the bearing/distance between two points on the map.
Show/Hide Heading Line – (Marine Mode only) toggles between showing or hiding the Heading Line,
which projects from the current position (triangle vehicle icon) to show your current heading.
Show/Hide Directions – (Automotive Mode only) toggles between showing or hiding the directions
field at the top of the Map Page display. Hiding the directions enables more of the map to be visible.
Set Up Map – jumps to the Map Setup Menu, allowing you to configure the map display to your preferences, including map detail, map orientation, automatic zoom, and various map items and points. For
detailed information on the Map Setup Menu, refer to the “Map Page Setup Menu” section later in this
manual.
Set Up Page Layout – allows you to choose the size of text and number of data fields.
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Main Pages
Change Data Fields – allows you to specify the type of data displayed in each data field on the page.
Refer to the Appendix for a complete list of all data fields used in the GPSMAP 276C.
Data Card Information – shows information about the detailed map data stored on the data card, and
allows you to select which maps are displayed or not displayed on the Map Page.
Map Page
To measure the Bearing/Distance between two points:
1. Highlight the ‘Measure Distance’ option and press ENTER/MARK. An on-screen pointer appears on
the map display at your present position with ‘ENT REF’ below it. A push-pin icon is placed at your
present location.
2. Move the cursor to the desired reference point (the point that you want to measure to). Notice the
bearing and distance displayed in the data window at the top of the display.
To start measuring from a different location, use the Arrow Keypad to pan to the location and press
ENTER/MARK. The push-pin icon marks the map cursor’s location. Again, move the cursor to the
point to which you want to measure. The bearing and distance from the reference point and cursor
coordinates are displayed in the data window.
Map Page Layout Options (Marine Mode)
3. Press the QUIT key to finish.
To set up the page layout:
1. Highlight ‘Set Up Page Layout’ from the Options Menu and press ENTER/MARK.
2. Select the desired option and press ENTER/MARK.
To change a data field display:
1. From the Options Menu, highlight ‘Change Numbers’ and press ENTER/MARK.
2. Move the field highlight to the data field you want to change and press ENTER/MARK.
3. Press UP or DOWN on the ARROW KEYPAD to highlight the data you want to display, and press
ENTER/MARK.
Changing a Data Field
4. Press QUIT to exit.
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Main Pages
To review/change data card information:
Map Page
1. Access the Map Page and press MENU.
2. From the Options Menu highlight ‘Data Card Information’ and press ENTER/MARK.
3. The first page shows the Map Families that are stored on the data card and whether they are set to
be shown on the Map Page. To change the setting for a Map Family, highlight the box next to the
Map Family name and press ENTER/MARK 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/
MARK.
5. To view detailed information about an individual map, highlight the Map Name and press ENTER/
MARK. Highlight ‘OK’ and press ENTER/MARK to exit
the map information page.
Data Card Information Page
6. To select/deselect individual maps for display on the
Map Page, highlight the box next to the desired map,
and press ENTER/MARK to check/uncheck the ‘Show’
box.
Or Press MENU and select one of the options (‘Show All’,
‘Hide All’, or ‘Show Defaults’), and press ENTER/MARK.
7. Press QUIT to exit the Data Card Information page.
Information page for an individual map
Map Family Information Page
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Main Pages
Map Page Setup Menu
The Map Page Setup Menu uses a “file tab” system, making it easier for you to find the various settings for configuring the map display. The following table outlines the file tab names and the settings
available in each tab:
General – Detail, Orientation, Auto Zoom, Lock to Roads, Accuracy Circle
Map – Basemap, Map Outlines, Lat/Lon Grid
Line – Heading Line, Bearing Line, Course Line, Track Log, Saved Tracks
Waypoint – Waypoints, Active Route
Marine – Services/Facilities, Spot Soundings, Tide Stations, Night Colors
Navaids – Symbol Set, Symbol Size, Light Sectors
City – Large City, Medium City, Small City, Small Town
Road – Freeway, Highway, Local Road, Local Road Name, Railroad
Point – POIs, Geo, Exit
Area – River/Lake, Park, Other, Metro
Topo – Major Contour, Inter Contour, Minor Contour, Land Cover
Map Page
Map Page Options (Marine Mode)
To change a map setup feature:
1. From the Map Page, press MENU, highlight ‘Set Up Map’ and press ENTER/MARK.
2. Press LEFT or RIGHT on the ARROW KEYPAD to highlight the desired file tab, then UP or DOWN on
the ARROW KEYPAD to highlight to the field you want to change and press ENTER/MARK.
3. Press UP or DOWN on the ARROW KEYPAD to highlight to the desired setting and press ENTER/
MARK to select the new setting.
Map Page Setup Menu
4. Press QUIT to exit.
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Main Pages
Map Page
General Tab of Map Page Setup Menu
‘General’ tab
Detail – Most, More, Normal, Less, Least: controls how much map detail is displayed. This setting only
applies to any map feature set to ‘Auto’. Those features that have a specified scale or that are turned ‘Off’
are unaffected by this setting.
AutoZoom – On/Off: when ‘On,’ the map automatically adjusts the map scale to a lower scale as you
approach your destination point.
Lock to Roads – On/Off: When ‘On,’ if the vehicle’s position is close enough to a road, the Map Page
displays the current position icon as “locked” to the road.
Accuracy Circle – On/Off: When ‘On,’ the circle represents the approximate accuracy of the unit based
on EPE, DOP, and basemap quality. Your current position is displayed within the circle.
Orientation – North Up: fixes the top of the map display to a north heading. Track Up: fixes the top of
the map display to the current track heading. Course Up: fixes the map so the direction of navigation is
always “up” and turns the navigation leg line vertical on the screen.
‘Map’ tab
Basemap – On/Off: turns the built in basemap on or off.
Map Outlines – On/Off: turns outlines of data card maps on or off.
Lat/Lon Grid – Off, Auto, 20 ft. to 800 nm/mi: sets the maximum scale at which the Lat/Lon grid appears on the screen. Some types of data are only displayed to certain zoom scales.
Grid Labels – Off, Auto, 20 ft. to 800 nm/mi: sets the maximum scale at which the grid labels appear on
the screen. Some types of data are only displayed to certain zoom scales.
Map Tab of Map Page Setup Menu
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Main Pages
‘Line’ tab
Heading Line – Off, Distance, Time: turns the Heading Line off, or configures it for distance or time.
The Heading Line projects (using time or distance) from the position marker (triangle vehicle icon) showing your current heading.
Bearing Line – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the Bearing Line appears on the screen. The Bearing Line shows the bearing from your current location to a
destination waypoint.
Course Line – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the Course Line appears
on the screen. The Course Line shows a direct navigation line from the point navigation was initiated to
a destination waypoint.
Track Log – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the track log appears on
the screen. Some types of data are only displayed to certain zoom scales.
Saved Tracks – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which saved tracks appear on
the screen. Some types of data are only displayed to certain zoom scales.
Map Page
Line Tab of Map Page Setup Menu
‘Waypoint’ tab
Waypoints, Active Route – controls the text size and zoom scale for waypoints and active routes.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the feature appears on the
screen. Some types of data are only displayed to certain zoom scales.
Waypoint Tab of Map Page Setup Menu
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Main Pages
Map Page
Marine Tab of Map Page Setup Menu
Mrn Nav Tab of Map Page Setup Menu
‘Marine’ tab
Services/Facilities, Spot Soundings, Tide Stations, Night Colors – controls the text size and zoom
scale for marine map items.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the feature appears on the
screen. Some types of data are only displayed to certain zoom scales.
‘Mrn Nav’ (Marine Navaids) tab
Symbol Set – controls which symbol set to use:
• Auto: BlueChart maps are drawn using symbols similar to the NOAA/NIMA standard. NonBlueChart maps are drawn using traditional Garmin symbols.
• Garmin: All maps are drawn using traditional Garmin symbols.
• NOAA: All maps are drawn using a symbol set similar to NOAA/NIMA.
• International: All maps are drawn using a symbol set similar to the IALA symbol set.
Symbol Size – Small, Medium, and Large: controls the size of the symbols.
Light Sectors – Off, Auto, On:
‘City’ tab
Large City, Medium City, Small City, Small Town – controls the text size and zoom scale for cities.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the cities appear on the
screen. Some types of data are only displayed to certain zoom scales.
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Main Pages
‘Road’ tab
Freeway, Highway, Local Road, Local Road Name, Railroad – controls the text size and zoom scale
for roads.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the roads appear on the
screen. Some types of data are only displayed to certain zoom scales.
‘Point’ tab
POIs, Geo, Exit – controls the text size and zoom scale for points, such as exits.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the points appear on the
screen. Some types of data are only displayed to certain zoom scales.
Map Page
Road Tab of Map Page Setup Menu
‘Area’ tab
River/Lake, Park, Other, Metro – controls the text size and zoom scale for areas such as rivers.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 mi: sets the maximum scale at which the areas appears on the screen.
Some types of data are only displayed to certain zoom scales.
‘Topo’ tab
Major Contour, Inter Contour, Minor Contour, Land Cover – controls the text size and zoom scale
for topographic contours.
Text – Off, Small, Medium, and Large: controls the screen size of the name.
Zoom – Auto, Off, 20 ft. to 800 nm/mi: sets the maximum scale at which the contours appear on the
screen. Some types of data are only displayed to certain zoom scales.
Topo Tab of Map Page Setup Menu
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Main Pages
Compass Page
Using the Compass Page
The Compass Page is standard in Marine Mode and optional in Automotive Mode. During active
navigation, the Compass Page guides you to your destination with digital data field readouts and a
graphic compass display with a bearing pointer.
To show the Compass Page in Automotive Mode:
1. While in Automotive Mode, press MENU twice to display the Main Menu.
2. Use the ARROW KEYPAD to highlight the Display Tab.
3. Highlight the Compass Page field and press ENTER/MARK. Select ‘On’ and press ENTER/MARK.
Compass Page (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 a bearing pointer
in the middle of the compass ring and a bearing “bug” on the outside of the compass ring (Note: the
bearing bug is a feature of Marine mode only). The compass ring and bearing indicators work independently to show, at a glance, the direction of your movement and the direction to your destination. For
instance, if the arrow points up, you are going directly to the waypoint. If the arrow points any direction
other than up, turn toward the arrow until it points up, then continue in that direction.
NOTE: You must be moving for the compass to accurately update and display your heading.
Compass Page (Automotive Mode)
The right side of the Compass Pages features user-selectable data fields that display helpful information during active navigation. For definitions of data field settings, refer to the Appendix.
During active navigation in Automotive Mode, the Compass Page displays navigation information at
the top of the screen, such as automatic turn-by-turn directions. Automotive Mode features larger data
fields with default settings that are more desirable for land navigation than those in Marine Mode.
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Main Pages
Compass Page Options Menu
The Options Menu on the Compass Page allows you to customize the Compass Page to your preferences in both Marine and Automotive modes. Like the Map Page, the Compass Page features userselectable data fields on the right side of the display. Each data field may be configured to display any
one of several data options, and the data window layout may be customized to change the actual size of
the data displayed.
Compass Page
To display the Compass Page Options Menu:
1. Press PAGE repeatedly until the Compass Page is displayed.
2. Press MENU.
To select a menu option:
1. Use the ARROW KEYPAD to highlight the option.
2. Press ENTER/MARK.
The options available on the Compass Page Options Menu are:
Show Course Pointer/Show Compass – (Marine Mode only) displays the Course Pointer, which shows
how far off you are from your desired course and how to get back on course. Also referred to as a CDI,
Course Deviation Indicator.
Show/Hide Bug Indicator – (Marine Mode only) toggles between showing and hiding the bearing bug
indicator (the small purple tick mark on the compass ring).
Set Up Page Layout – allows you to choose the size of text and number of data fields.
Change Data Fields – allows you to specify the type of data displayed in each data field on the page.
For a list of data field display options, refer to the Appendix.
Compass Page (Marine Mode) Options Menu
Compass Page (Marine Mode)
with Course Pointer showing
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Main Pages
Highway Page
Highway Page Overview
Whenever a ‘Go To’, ‘TracBack’ or ‘Route’ has been activated, the Highway Page provides digital and
graphic steering guidance to the destination. The right side of the Highway Page features user-selectable
data fields that display useful navigation information. A compass ribbon is displayed at the top of the
page to show your current heading as the violet bar and a red vertical bar indicates 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.
To hide/show the Highway Page:
1. Press MENU twice to display the Main Menu.
2. Use the ARROW KEYPAD to highlight the Display Tab.
Highway Page (Marine Mode)
3. Highlight the Highway Page field and press ENTER/MARK.
4. Select ‘Off’ to hide or ‘On’ to show, and press ENTER/MARK.
Using the Highway Page
As you head toward your destination, the highway perspective moves to indicate your progress to the
waypoint and which direction you should steer to stay on course. If you are navigating a route, the Highway Page shows each route waypoint in sequence connected by a black “road” with a white line down the
middle, which is your desired track line. Nearby waypoints not in the active route can also be displayed.
The highway perspective scale may also be zoomed in or out to display a larger or smaller view of the
highway. Five settings are available from 1X to 16X, with a default setting of 8X.
Highway Page (Automotive Mode)
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Main Pages
To change the highway perspective scale:
•
Press IN to zoom in.
•
Press OUT to zoom out.
Highway Page
Highway Page Options Menu
The Highway Page Options Menu allows you to define the data fields and select which waypoints and
track are displayed on screen. The data window, located at the top of the page, provides Highway Page
options allows you to define the data fields and select which waypoints and track are displayed on screen.
The data fields, located along the right side of the page, provide a user-selectable layout of various types
of useful data. Each data field may be configured to display several data options. The data window layout may also be changed to display additional data fields and change the actual size of the data displayed.
To display the Highway Page Options Menu:
1. Press PAGE repeatedly until the Highway Page is displayed.
Highway Page (Marine Mode) Options Menu
2. Press MENU.
To select a menu option:
1. Use the ARROW KEYPAD to highlight the desired option.
2. Press ENTER/MARK.
The following options are available from the Highway Page menu:
Setup Page Layout – allows you to choose the size of text and number of data fields.
Change Data Fields – allows you to specify the type of data displayed in each data field used on the
map display. This option is available from any of the main pages. See the Appendix for a listing of the
data fields.
Set Up Highway – displays an Options Menu with two tabs: Line, and Waypoint. Each tab has On/Off
settings for several options.
Set Up Highway
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Main Pages
Active Route Page:
Marine Mode
Active Route Page (Marine Mode)
Active Route Page
Whenever you have activated a route in the GPSMAP 276C, the Active Route Page shows each point
(waypoint or map item) of the active route, with the point name, Course, Distance, and several other
fields of information. The current destination point, the ‘active’ point, is marked with an arrow icon. As
you navigate a route, the list automatically updates to indicate the next ‘active’ point first. The Active
Route and Route Review Pages share many of the same features and options.
Active Route Page Options Menu
The following route options are available by pressing MENU on the Active Route Page:
Deactivate – stops route navigation.
Edit on Map – allows you to edit the route on the map.
Add Waypoint – inserts a waypoint (or point from the Find Menu) before the highlighted waypoint or
add a point(s) onto the end of the route.
Remove Waypoint – deletes the selected waypoint from the route.
Invert – reverses the order of the route.
Plan Route – allows you to enter information about your route to more accurately provide you with
arrival times.
Change Data Fields – allows you to customize the data fields displayed on the Active Route Page.
Active Route Page (Marine Mode)
Options Menu
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Main Pages
Current Route Page
Whenever you have activated a route in the GPSMAP 276C set 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.
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/MARK to view the Next Turn page for that turn. The Current Route and
Next Turn page display similar information, just in a different layout. The Next Turn page displays your
next turn on a map.
For additional details on the Active Route Page, see the “Using Routes” section of the “Basic Operation” chapter.
Saving the Current Route
You can save the current route from the Current Route Page. Press MENU to save the route. Press
ENTER/MARK when ‘Save Route’ is highlighted. Your route is automatically saved, using the starting
point and destination as the route name. Press ENTER/MARK when ‘OK’ is highlighted to complete
saving the route.
Current Route Page:
Automotive Mode
Current Route Page (Automotive Mode)
Next Turn Page (Automotive Mode)
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Main Pages
Position Data Page:
Marine Mode
Position Data Page (Marine Mode)
‘Waypoint’ is selected as the ‘Nearest Type’. The
Coronado, CA waypoint is the nearest waypoint.
Understanding the Position Data Page
The Position Data Page provides a quick reference for the important data you want to display while
navigating a route in Marine Mode. The default page displays a compass ribbon, your current latitude
and longitude, the current date and time, the location you are traveling from, and eight user-selectable
data fields. The compass ribbon is displayed at the top of the page to show your current heading along
with a red, vertical bar that indicates the bearing to your course. To stay on course, steer towards the
violet, vertical indicator (or arrows) until it lines up with the red bar in the middle.
Position Data Page Options Menu
The following options are available from the Position Data Page:
Set Up Page Layout – allows you to choose the layout and number of data fields.
Change Data Fields – allows you to specify the type of data displayed in each data field displayed. See
the Appendix for a listing of the data fields.
Change Nearest Type – allows you to specify the type of item to be used as the nearest item: Automatic,
City, or Waypoint. As shown in the image to the right, ‘Waypoint’ is selected as the ‘Nearest Type’ and the
Coronado waypoint is the nearest waypoint to the unit’s current location.
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.
Reset All – clears all trip information including the maximum speed and odometer.
Position Data Page (Marine Mode)
Options Menu
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Main Pages
Understanding the Trip Computer Page
The Trip Computer Page provides a quick reference for the important data you want to display while
navigating a route in Automotive Mode. It indicates your current speed and many helpful statistics about
your trip, such as bearing, average speed, and moving time.
Reset the Trip Computer before beginning a trip. If you make frequent stops, leave the GPSMAP
276C powered on in order to receive satellites. This allows the unit to accurately measure elapsed time
during the trip.
Trip Computer Page Options Menu
The following options are available from the Trip Computer Page. Some options are only available if
you have changed the Page Layout from the default (shown to the right).
Setup Page Layout – allows you to choose the layout and number of data fields. You can change the
layout of the Trip Computer to the Position Data Page layout while still in Automotive Mode. This will
provide more detailed information of your trip. You can also then change the data fields on the Position
Data Page to be more useful while in Automotive Mode. For more information about the Position Data
Page layout, see the previous page.
Change Nearest Type – allows you to specify the type of item to be used as the nearest item: Automatic,
Intersection, City, or Waypoint.
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.
Reset All – clears all trip information including the maximum speed and odometer.
Trip Computer Page:
Automotive Mode
Trip Computer Page (Automotive Mode)
Trip Computer Page (Automotive Mode)
Options Menu
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Main Menu
Overview
Using the Main Menu
The Main Menu provides access to various waypoint, system, navigation and interface management,
and setup menus. The Main Menu is available from any page in the system by pressing the MENU key.
To access and use Main Menu:
1. Press MENU twice. The Main Menu is divided into categories by function, such as GPS and Route.
2. Move the ARROW KEYPAD UP or DOWN to highlight the tab you want to view. The information for
the highlighted tab automatically appears. Press to the RIGHT on the ARROW KEYPAD, then move
UP or DOWN to select individual items on that page.
Page
tabs
3. Press MENU for additional menu options or ENTER to make changes to the highlighted item. Press
LEFT on the ARROW KEYPAD to get back to the menu tab list. Press QUIT to exit the Main Menu.
Main Menu: GPS Tab
The Main Menu pages, listed below, are discussed in-depth in the following pages.
GPS – shows satellite status, accuracy, DOP, and differential information.
Route – allows you to create, edit, activate, or delete routes.
Points – allows you to create, edit, or delete waypoints and proximity points.
Track – allows you to save the active track, edit saved tracks, and navigate a TracBack.
Alarms – sets up alarms for navigation (such as anchor drag), the system (such as accuracy), and the
sonar features (such as shallow water).
Celestial – displays tide information, sun and moon information, and hunting and fishing information.
Message – displays system messages, such as “Lost Satellite Reception”. You can also filter the messages
that are displayed.
Display – adjusts various aspects of the display, such as backlight timeout and intensity.
Sound – sets the volume level, voice language, attention tone, and beeper action.
Setup – provides several tabs to setup the GPSMAP 276C to suit your needs.
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Main Menu
Using the GPS Tab
The GPS Tab provides a visual reference of satellite acquisition, receiver status, and accuracy. The status information show what the receiver is doing at any given moment. The skyview and signal strength
bars give an indication of what satellites are visible to the receiver and whether they are being tracked.
The signal strength is shown on a bar graph for each satellite, with the satellite number below. 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 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(s) and is collecting data.
• Green signal strength bars: The receiver has collected the necessary data and the satellite(s) are
ready for use.
As soon as the GPSMAP 276C has collected the necessary data from the best satellites in view to
calculate a fix, the status field indicates the status. The unit then updates the position, date and time.
You can use the skyview to help determine if any satellites are being blocked, and whether you have
a current position fix (indicated by a ‘2D’, ‘2D Differential’, ‘3D’, or ‘3D Differential’ in the status field).
The skyview shows a bird’s-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 45º above the horizon, and
the center point a position directly overhead. You can also set the skyview to a ‘Track Up’ configuration,
causing the top of the skyview to align along your current track heading.
The GPS Tab also displays the current date and time near the bottom of the page. A power source
indicator shows the battery level (
), shows that the unit is charging (
), or shows that an
external power source is in use (
).
GPS Tab
Skyview
Signal Strength
Bars
Current Date
Status Field
Power Source
Indicator
Satellite
Numbers
Current Time
Main Menu: GPS Tab
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Main Menu
GPS Tab
Signal Strength
Bars
‘Differential’ Status
‘Receiver
Status’ Field
Satellite
Numbers
‘Accuracy’ Field
Main Menu: GPS Tab
Receiver Status
The Receiver Status field, located at the top field of the page, displays one of the following conditions:
• Searching the Sky: The receiver is looking for any satellites.
• AutoLocate: The receiver is looking for any satellite whose almanac has been collected. This
process 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 position, but has not collected enough data to calculate a fix.
• 2D GPS Location: At least three satellites with good geometry have been acquired and a 2
dimensional position fix (latitude and longitude) is being calculated. ‘2D Differential’ will appear
when you are receiving DGPS corrections in 2D mode and a ‘D’ will show on the strength bar of
satellites being corrected.
• 3D GPS Location: At least four satellites with good geometry have been acquired and your
position is now being calculated in latitude, longitude and altitude. ‘3D Differential’ will appear
when you are receiving DGPS corrections in 3D mode and a ‘D’ will show 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.
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Main Menu
Differential Field
Differential receiver status is indicated in the bottom left field of the page and will show one of the
following conditions:
• None: No optional beacon receiver is attached or enabled in the Comm tab (Main Menu) or
WAAS is turned Off.
• 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.
• Check Beacon Wiring: The DGPS setting is enabled in the Comm tab (Main Menu) but no DGPS
device is detected.
• No Beacon Signal: DGPS receiver is attached, but not transmitting RTCM data to GPS.
• Tuning Beacon: Receiver is tuning manual DGPS frequency.
• Using Differential: Unit is receiving DGPS corrections.
• Scanning for Beacon: DGPS receiver is scanning for available frequency.
GPS Tab Options Menu
When the GPS Tab is open, press the MENU key to open the GPS Tab Options Menu:
Start/Stop Simulator – activates and deactivates simulator mode, which is particularly helpful when
learning how to use your unit.
WAAS On – enables WAAS capability. Refer to the Appendix for more information about WAAS.
Track Up Skyview/North Up Skyview – orients the skyview display between a north up or track up
for the GPS Tab only.
New Altitude – allows you to manually enter your altitude.
New Location – allows you to enter a new location automatically or using the map.
GPS Tab
Differential Status
Main Menu: GPS Tab
GPS Tab Options Menu
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Main Menu
Route Tab
Using the Route Tab
As discussed in the “Using Routes” section of this manual, the Route Tab displays the routes you have
created in your GPSMAP 276C unit. For complete information on routes, refer to the “Using Routes”
topic that appears in the “Basic Operation” section in this manual.
To access the Route Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Route’ from the vertical menu of tabs using the ARROW KEYPAD.
Route Tab
displaying the Route List
Route Tab Options Menu
The Route Tab in the Main Menu displays all the routes currently stored in memory, along with a
descriptive name for each route. By pressing the MENU button on the Route Tab, the following menu
options appear:
Activate Route – begins navigating the route.
New Route – opens a blank Route Review Page so you can create a new route.
Copy Route – copies the highlighted route.
Delete Route – erases the highlighted route.
Delete All – erases all routes from the GPSMAP 276C.
Set Up Routes – allows you to set the route leg transition (or waypoint transition). Select from ‘Auto’
or ‘Manual’. When you select ‘Manual’, while navigating a route you can transition to the next waypoint
when you want. Simply press NAV/MOB while you are navigating the route. Highlight ‘Next Route
Waypoint’ from the Navigate Menu and press ENTER/MARK.
Route Tab Options Menu
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Main Menu
Points Tab Overview
The Points Tab of the Main Menu features two tabs, ‘User’ and ‘Proximity’, that let you manage a large
number of waypoints quickly and efficiently. For complete information about creating, editing, and
deleting waypoints, refer to the “Using Waypoints” topic that appears in the “Basic Operation” section in
this manual.
Points Tab
To access the Points Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Points’ from the vertical list of tabs using the ARROW KEYPAD.
‘User’ tab
The ‘User’ tab displays a master list of all waypoints currently stored in memory. From the User list,
you may review, edit, rename, or delete individual waypoints or delete all user waypoints. The total
number of stored and available waypoints is displayed at the bottom of the User page, with the stored
waypoints arranged in numerical/alphabetical order.
Points Tab
displaying the ‘User’ tab
‘Proximity’ tab
The ‘Proximity’ tab of the Points Tab lets you define an alarm circle around a stored waypoint
position. The alarm circle can be used to help you avoid reefs, rocks, or restricted waters. Up to ten
waypoints may be listed with a maximum alarm radius of 99.99 nautical miles, statute miles, or kilometers.
Proximity Points Tab
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Main Menu
Track Tab
Track Tab Overview
The GPSMAP 276C draws an electronic breadcrumb trail or ‘track log’ on the Map Page as you
travel. The track log contains information about points along its path, including time and position. The
GPSMAP 276C uses this information to allow you to navigate using the saved track.
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, the new track points
overwrite the oldest track points. The percentage of memory used by the current track log displays at the
top of the ‘Active’ tab. After the track log is cleared, it displays zero percent. When the display reaches
100%, the most recent track points start to overwrite the least recent track points (if ‘Wrap’ is selected for
‘Record Mode’). To avoid losing track points, save the track log when it approaches the 99% mark.
You must first save the track log before you can use the ‘Navigate Track’ feature. The Save feature allows you to store up to 15 track logs from certain times and dates.
Track Tab: ‘Active’ tab
To access the Track Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Track’ from the vertical list of tabs using the ARROW KEYPAD.
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Main Menu
‘Active’ tab
The ‘Active’ tab allows you to save and clear the track log as well as set up how the unit records
tracks.
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%). ‘Off’ does not record tracks.
Interval – ‘Distance’ creates track points after a specified distance has been traveled. ‘Time’ creates track
points after a specified time has elapsed. ‘Resolution’ creates track points based upon the resolution. The
higher the resolution entered, the more points the unit creates to make the track.
Value – creates a track according to the ‘Interval’ and ‘Value’. Enter a specific distance, time, or resolution.
Track Tab
To clear the track log:
1. Press MENU twice to display the Main Menu.
Saving a portion of the track log
2. Using the ARROW KEYPAD, highlight ‘Track’, then highlight the ‘Active’ tab to the right.
3. Use the ARROW KEYPAD to select the ‘Clear’ button and press ENTER/MARK.
4. Highlight the ‘OK’ field and press ENTER/MARK. Press QUIT to exit.
To save the entire track log:
1. Press the MENU key twice to open the Main Menu.
2. Use the ARROW KEYPAD to highlight ‘Track’, then highlight the ‘Active’ tab to the right.
3. Use the ARROW KEYPAD to select ‘Save’ and press ENTER/MARK.
4. A window pops up asking if you want to save the entire track log. To save the entire track, highlight
‘Yes’ and press ENTER/MARK.
Clearing the track log
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Main Menu
To save a portion of the track log:
Track Tab
1. Press the MENU key twice to open the Main Menu.
2. Use the ARROW KEYPAD to highlight the Track Tab, then highlight the ‘Active’ tab to the right.
3. Use the ARROW KEYPAD to select ‘Save’ and press ENTER/MARK.
4. A window pops up asking if you want to save the entire track log. To save only a portion of the track,
highlight ‘No’ and press ENTER/MARK.
5. Use the ARROW KEYPAD to select a beginning point and press ENTER/MARK. Use the ARROW
KEYPAD to select an ending point and press ENTER/MARK.
6. The Track Review Page automatically opens.
To change the name of the track, highlight the name field and press ENTER/MARK, make your
changes and press ENTER/MARK again.
To delete the track on the map, highlight ‘Delete’ and press ENTER/MARK.
Saving a portion of the track log
To begin a TracBack, highlight ‘TracBack’ and press ENTER/MARK. For more information about the
TracBack feature, refer to the “Navigating” section in the “Basic Operation” chapter of this manual.
To display the track on the map, highlight ‘Map’ and press ENTER/MARK. Press QUIT to return to
the Track Tab.
7. Highlight ‘OK’ and press ENTER/MARK to save the track. Press QUIT to exit.
Track Review Page
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Main Menu
To restore the ‘Active’ tab defaults:
1. Press the MENU key twice to open the Main Menu.
2. Use the ARROW KEYPAD to highlight the Track Tab, then highlight the ‘Active’ tab to the right.
Track Tab
3. Press MENU.
4. Press ENTER/MARK to restore the ‘Active’ tab to defaults.
‘Saved’ tab
The ‘Saved’ tab lists all of the saved tracks in your unit. Press the MENU key to open the ‘Saved’ tab
Options Menu:
Review on Map – displays the highlighted track on the map page.
TracBack – navigates the track. You can either navigate the track as it is saved, or you can navigate the
reverse of the track. For more information about the TracBack feature, refer to the “Navigating” section in
the “Basic Operation” chapter of this manual.
Delete Track – erases highlighted track from the unit’s memory.
Delete All – erases all tracks from the unit’s memory.
‘Saved’ tab
‘Saved’ tab Options Menu
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Main Menu
Alarms Tab
Using the Alarms Tab
The Alarms Tab of the Main Menu allows you to define alarm settings.
To access the Alarms Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Alarms’ from the vertical list of tabs using the ARROW KEYPAD.
To set an alarm:
1. Press MENU twice to open the Main Menu.
2. Use the ARROW KEYPAD to open the Alarms Tab.
3. Use the ARROW KEYPAD to highlight the field to the right of the alarm name you wish activate and
press ENTER/MARK.
Alarms Tab: ‘Nav’ tab
4. Change the mode to ‘On’ (Dist or Time for the ‘Arrival’ alarm) and press ENTER/MARK.
5. Highlight the next field to the right and press ENTER/MARK, then enter the desired settings and press
ENTER/MARK to finish.
When an alarm goes off, the alarm message appears on the display and the unit emits five (5) beeps.
When you select an alarm to be persistent, the alarm message appears on the display and the unit beeps
until you press ENTER/MARK to acknowledge the alarm.
To set a persistent alarm:
1. Press MENU twice to open the Main Menu.
2. Use the ARROW KEYPAD to open the Alarms Tab.
3. Use the ARROW KEYPAD to highlight the box next to the alarm you would like to make persistent
(for example, ‘Anchor Drag’).
4. Press ENTER/MARK 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/MARK.
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Main Menu
To restore alarm defaults:
1. Press MENU twice to open the Main Menu.
2. Use the ARROW KEYPAD to open the Alarms Tab.
Alarms Tab
3. Press MENU.
4. Select ‘Restore Default’ to restore the defaults of the current tab. Select ‘All Alarm Defaults’ to restore
all tabs in the Alarms Tab to the factory defaults.
‘Nav’ (Navigation) Alarms
Next Turn – sets an alarm for next turn in route. Select ‘Off’ for no ‘Next Turn’ alarm. Select ‘Dist’ to
enter a specific distance that the ‘Next Turn’ alarm will go off. For example, if you enter 1 nm, the ‘Next
Turn’ alarm will sound one nautical mile before you reach the next turn. Select ‘Time’ to enter a specific
time before the turn for the alarm to go off. For example, if you enter 00:02:00 the ‘Next Turn’ alarm
will sound two minutes before you reach the next turn. 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 ‘Off’ for no ‘Arrival’ alarm. Select ‘Dist’ to enter a specific distance that the ‘Arrival’
alarm will go off. For example, if you enter 1 nm, the ‘Arrival’ alarm will sound one nautical mile before
you reach the next turn. Select ‘Time’ to enter a specific time before the destination for the alarm to go
off. For example, if you enter 00:02:00 the ‘Arrival’ alarm will sound two minutes before you reach the
destination. Select ‘Auto’ for the unit to provide an ‘Arrival’ alarm at its discretion.
Off Course – sets an alarm to sound when you are off your desired course. Select ‘On’ to turn this alarm
on and then enter a distance.
Anchor Drag – sets an alarm to sound when you have exceeded a specified drift distance. Select ‘On’ to
turn this alarm on and then enter a distance.
Alarms Tab: ‘Nav’ tab
Alarms Tab: ‘Nav’ tab
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Main Menu
Alarms Tab
Alarms Tab: ‘System’ tab
‘System’ Alarms
Clock – sets an alarm based on the unit’s clock. Select ‘On’ and then enter a specific time that you want
the alarm to sound. The unit must be on for the clock alarm to work.
Ext. (External) Voltage – sets an alarm to sound when the external voltage drops below a specified
amount. Select ‘On’ and then enter a specific voltage.
DGPS – sets an alarm to sound when the unit loses a differential fix.
Accuracy – sets an alarm to sound when GPS accuracy falls outside of the user-set value. Select ‘On’ and
then enter a specific distance.
‘Sonar’ Alarms
Shallow Water – sets alarms to sound when you enter an area of water that is too shallow. Select ‘On’
and then enter a specific distance. You must be receiving sonar NMEA data for this function to work.
Deep Water – sets alarms to sound when you enter an area of water that is too deep. Select ‘On’ and
then enter a specific distance. You must be receiving sonar NMEA data for this function to work.
Water Temp – sets an alarm to indicate if the water temperature has exceeded or dropped below a specific temperature, or fallen outside/inside a specific temperature range. Select ‘Above’ or ‘Below’ and then
enter a specific temperature, or select ‘Inside’ or ‘Outside’ and enter a range of temperatures. You must be
receiving sonar NMEA data for this function to work.
Drift – sets an alarm to sound when you have exceeded a specified drift distance. Select ‘On’ to turn this
alarm on and then enter a distance.
Alarms Tab: ‘Sonar’ tab
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Main Menu
Using the Celestial Tab
The Celestial Tab of the Main Menu displays data for the tide, Sun & Moon information, and hunting
and fishing information. You may display this data for your current position, a position from the map, or
a waypoint location. Also, you may select a different date and time, or use the current data.
Celestial Tab
To access the Celestial Tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Celestial’ from the vertical list of tabs using the ARROW KEYPAD.
‘Tide’ tab
The ‘Tide’ tab shows a graphical chart that displays tide station information in a 24-hour span starting
at midnight station time. You can choose from different dates and over 3000 tide stations.
The top of the page displays the tide station being referenced, below that the date. The top of the
chart shows a 24-hour block of local time (LCL) for your position, with the reported station time (STA)
appearing at the bottom. Daytime (light bar) and nighttime (dark bar) show across the time scale, with
the time progressing from left to right (local time scales and sunrise/sunset info may not be available for
a few stations). The solid, light vertical lines represent 4-hour increments, and the light, dotted vertical
lines are 1-hour increments. A vertical line (with a block at the top or bottom displaying time) indicates
the time of day.
The tide curve shows as a shaded area, with higher tides being taller and lower tides shorter. The
horizontal line (with a block at the left displaying depth) indicates the current tide height. The Mean
Lower Low Water (MLLW) appears as a solid, horizontal line near the bottom of the chart (this line only
appears if the tide ranges to the zero value or below). The bottom of the page indicates the times with
the largest and smallest tides.
Celestial Tab of the Main Menu
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Main Menu
To view a tide chart for a different tide station:
Celestial Tab
1. From the ‘Tide’ tab, highlight the ‘At’ field and press ENTER/MARK. The Find Menu automatically
opens showing the Tide Stations.
2. Press MENU and select ‘Near Current Location’, ‘Near Current Route’, Near Other’ (select another
location using the map), or ‘Near Destination’ if desired. The list is then updated with your search
requirements.
3. Select the desired station from the list and press ENTER/MARK.
4. The Tide Station Information page opens. Highlight ‘OK’ and press ENTER/MARK.
5. The ‘Tide’ tab displays again showing the tide chart for the selected tide station.
To view the tide chart for another date:
1. From the ‘Tide’ tab with the desired chart displayed, highlight the ‘On’ field and press ENTER/MARK.
Celestial Tab: ‘Tide’ tab
2. Enter the desired date with the ARROW KEYPAD and press ENTER/MARK. You can also use the
Zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to quickly
scroll through dates.
3. Press ENTER/MARK when finished. The unit displays the chart for the date you entered or selected.
To use the current date again, highlight the ‘Date’ field. Press MENU, highlight ‘Use Current Date’,
and press ENTER/MARK.
To view a chart’s details for another time during the day (other than current time):
1. From the ‘Tide’ tab with the desired chart displayed, press MENU and select ‘Move Cursor’.
2. Press the ARROW KEYPAD RIGHT or LEFT to view the chart at another time.
3. To return to the current time, press MENU and select ‘Stop Moving Cursor’.
‘Tide’ tab Options Menu
To automatically start cursor mode to scroll the chart:
1. Use the ARROW KEYPAD to highlight the date field. Then press DOWN to activate the cursor mode.
2. Scroll the chart RIGHT to view the next day or LEFT to view the previous day.
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Main Menu
‘Sun & Moon’ tab
The ‘Sun & Moon’ tab provides you with sun rise/set and moon rise/set times. A graphic display of
the moon phase is also displayed. You may view sun and moon information for any date or location.
You can also use the play, fast forward, and stop buttons to view an animation of the ‘Sun & Moon’ tab.
Press MENU to change the orientation of the skyview on the ‘Sun & Moon’ tab to Track Up or North Up.
Celestial Tab
To display the Sun & Moon information:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Celestial’ from the vertical list of tabs using the ARROW KEYPAD.
3. Use the Arrow Keypad to display the ‘Sun & Moon’ tab.
To view Sun & Moon information for a different date:
1. Use the ARROW KEYPAD to highlight the ‘Date’ field and press ENTER/MARK.
2. Use the ARROW KEYPAD to change the digits of the date to the desired date. You can also use the
Zoom IN and OUT keys to jump to another date. Press and hold IN or OUT to quickly scroll the date.
Celestial Tab: Sun & Moon Tab
3. Press ENTER/MARK when finished. The unit displays the chart for the date you entered or selected.
To use the current date again, highlight the ‘Date’ field. Press MENU, highlight ‘Use Current Date’,
and press ENTER/MARK.
To view Sun & Moon information for a different location:
1. Use the ARROW KEYPAD to highlight the ‘From’ field and press ENTER/MARK.
2. Highlight ‘Use Find Menu’ and press ENTER/MARK. The Find Menu automatically opens.
3. Select a waypoint or point of interest and press ENTER/MARK.
4. On the waypoint/point information page, press ENTER/MARK. The unit displays the Sun & Moon
information for the location you selected.
New Location Options
To use the current location, highlight the ‘From’ field. Press ENTER/MARK, highlight ‘Current Location’, and press ENTER/MARK.
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Main Menu
Celestial Tab
‘Hunt & Fish’ tab
The ‘Hunt & Fish’ tab provides you with predictions of the good and best times to hunt and fish in a
selected location on a specific date.
To display the Hunt & Fish information:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Celestial’ from the vertical list of tabs using the ARROW KEYPAD.
3. Use the Arrow Keypad to display the ‘Hunt & Fish’ tab.
To view Hunt & Fish information for a different date:
1. Use the ARROW KEYPAD to highlight the ‘Date’ field and press ENTER/MARK.
Celestial Tab: Hunt & Fish Tab
2. Use the ARROW KEYPAD to change the digits of the date to the desired date. You can also use the
Zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to quickly
scroll through dates.
3. Press ENTER/MARK when finished. The unit displays the information for the date you entered.
To use the current date again, highlight the ‘Date’ field. Press MENU, highlight ‘Use Current Date’,
and press ENTER/MARK.
To view Hunt & Fish information for a different location:
1. Use the ARROW KEYPAD to highlight the ‘From’ field and press ENTER/MARK.
2. Highlight ‘Use Find Menu’ and press ENTER/MARK. The Find Menu automatically opens.
3. Select a waypoint or point of interest and press ENTER/MARK.
4. On the waypoint/point information page, press ENTER/MARK. The unit displays the Hunt & Fish
information for the location you selected.
New Location Options
To use the current location, highlight the ‘From’ field. Press ENTER/MARK, highlight ‘Current Location’, and press ENTER/MARK.
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Main Menu
Viewing the Message Tab
The Message Tab of the Main Menu displays a list of messages generated by your GPSMAP 276C.
Use the ARROW KEYPAD to scroll the entire list of messages on the ‘Log’ tab. You can also use the ‘Log
Filter’ tab to filter the messages to only display a certain kind of message.
Message Tab
To view the messages:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Message’ from the vertical list of tabs using the ARROW KEYPAD.
3. Use the ARROW KEYPAD to highlight the desired message. Press ENTER/MARK to view detailed
information about that message.
To show/hide messages using the Log Filter:
1. Open the Message Tab. Use the ARROW KEYPAD to highlight the ‘Log Filter’ tab. By default all
messages are displayed.
Message Tab: ‘Log’ tab
2. Use the ARROW KEYPAD to highlight the message you want to hide and press ENTER/MARK.
3. The message name then appears in the ‘Hide’ window. Highlight the message again and press
ENTER/MARK to show it again.
Message Tab: ‘Log Filter’ tab
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Main Menu
Display Tab
Main Menu: Display Tab
Adjusting the Display using the Display Tab
The Display Tab of the Main Menu allows you to set several features of the display, such as what pages
to display in the Main Page Sequence and how long the backlight stays on.
Color Mode – sets the display to a ‘Day’, ‘Night’, or ‘Auto’ display. Auto switches from day to night at
sunset and changes back at sunrise.
Main Menu – enables the main menu tabs to be displayed as text and icons (default) or text tabs only.
Backlight Timeout – sets the backlight to stay on once it is turned on, or to time out after a selected
period of time has elapsed (when using the battery. The backlight stays on regardless of this setting when
external power is used) .
Highway Page – enables the page and places it in the Main Page Sequence when ‘On’ is selected.
Compass Page – enables the page and places it in the Main Page Sequence when ‘On’ is selected.
Backlight Intensity – turns the backlight up or down. Press the ARROW KEYPAD UP to raise the
intensity or DOWN to lower.
To view the Display Tab:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Display’ from the vertical list of tabs using the ARROW KEYPAD.
To restore the display to defaults:
1. Access the Display Tab.
2. Press MENU.
3. Highlight ‘Restore Defaults’ and press ENTER/MARK.
Main Menu displayed as Text Only
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Main Menu
Adjusting the Unit’s Sound
The Sound Tab of the Main Menu allows you to customize the sounds your GPSMAP 276C makes to
suit your needs.
Beeper – sets the beeper to chime during keypresses and alarms (‘Key and Alarm’) or on ‘Alarms Only’.
Select ‘Off’ to turn the beeper off.
Attention Tone – turns the attention tone that sounds before the vocal prompts on and off.
Voice Language – sets the language for vocal prompts.
Speaker Volume – sets the speaker volume when using an external speaker. Press the ARROW KEYPAD RIGHT to raise the volume or LEFT to lower.
Sound Tab
To view the Sound Tab:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Sound’ from the vertical list of tabs using the ARROW KEYPAD.
Main Menu: Display Tab
To restore the sound to defaults:
1. Access the Sound Tab.
2. Press MENU.
3. Highlight ‘Restore Defaults’ and press ENTER/MARK.
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Main Menu
Setup Tab
Setup Tab Overview
The Setup Tab has several tabs containing different types of information for you to customize your
GPSMAP 276C. Use the ARROW KEYPAD to scroll to the RIGHT and LEFT to view all of the tabs.
To view the Setup Tab:
1. Press MENU twice to open the Main Menu.
2. Highlight ‘Setup’ from the vertical list of tabs using the ARROW KEYPAD.
3. Use the Arrow Keypad to highlight the desired tab from the top row of tabs: System, Road Routing,
Guidance, Timer, Time, Units, Location, Owner, Com 1, and Com 2.
To restore system defaults:
1. Open the Main Menu. Highlight ‘Setup’ from the vertical list of tabs. Press MENU.
Main Menu: Setup Tab
2. Highlight ‘Restore Defaults’ and press ENTER/MARK. Highlight ‘All Unit Defaults’ to restore all units
settings to the factory defaults.
To view information about your GPSMAP 276C, press MENU. Highlight ‘System Information’ and
press ENTER/MARK.
System Information
‘System’ tab
To open the ‘System’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from the
vertical tab list. Then select ‘System’ from the row of tabs along the top of the page.
System Mode – sets the unit to operate in ‘Normal’ mode (normal navigation), ‘Battery Saver’ mode, or
‘Simulator’ mode (for practice ONLY).
Usage Mode – sets the unit to ‘Marine’ 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 – allows you to select from various languages for the unit’s on-screen display.
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Main Menu
‘Road Routing’ tab
To open the ‘Road Routing’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’
from the vertical tab list. Then select ‘Road Routing’ from the row of tabs along the top of the page.
Route Preference – allows the unit to calculate a route for:
• Faster Time: Time is used as the criterion for calculating your route. Routes calculated with this
setting are faster to drive but may be longer in distance.
• Shorter Distance: Distance is used as the criterion for calculating your route. Routes calculated
with this setting are shorter in distance but may take more time to drive.
• Off Road: A direct line from your current physical location to your destination is displayed. This
is useful when you are travelling outside of detailed map coverage areas or where no roads exist.
Ask Me My Preference – determines whether you will be asked to select a ‘Route Preference’ (Faster Time,
Shorter Distance, or Off Road) before route calculations.
Calculation Method – sets how the unit searches for the perfect route.
• Quickest Calculation: Fastest results, but it might not find the best route.
• Quick Calculation: Takes a bit more time to calculate, but generates a better quality route.
• Better Route: Even better quality route, but uses a longer calculation time.
• Best Route: Most optimal route, but takes the longest time to calculate.
Calculate Routes for – sets the route calculation for the particular vehicle you are in. By specifying
which vehicle type you are driving, you optimize the route for your vehicle type because some roads have
vehicle-based restrictions. For example, a street or gate may be accessible by emergency vehicles only, or
a residential street may not allow commercial trucking traffic.
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. You can
select to avoid ‘U-Turns’, ‘Toll Roads’, ‘Highways’, and/or ‘Unpaved Roads’.
Setup Tab
‘Road Routing’ tab of the Setup Tab
‘Guidance’ tab of the Setup Tab
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Main Menu
Setup Tab
‘Guidance’ tab of the Setup Tab
‘Guidance’ tab
To open the ‘Guidance’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from
the vertical tab list. Then select ‘Guidance’ from the row of tabs along the top of the page.
Off-Route Recalculation – allows you to set whether the unit prompts you when it is recalculating
your route (‘Prompted’), or whether the unit recalculates automatically. You can also set whether the unit
announces the recalculation (‘Automatic - Announced’) or recalculates silently (‘Automatic - Silent’). You
can also turn route recalculation ‘Off’.
Next Turn Pop-up – turns the Next Turn Pop-up window ‘Off’, or opens the window when the NAV/
MOB key is held (‘Held NAV Key Only’), opens automatically (‘Automatically Only’) or ‘Both’.
‘Timers’ tab
To open the ‘Timers’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from the
vertical tab list. Then select ‘Timers’ from the row of tabs along the top of the page.
User – allows you to set the timer to ‘Count Up’ or ‘Count Down’. You can also ‘Reset’ the timer and
turn it ‘Off’. Enter a time to use when counting up or down to the right.
Since Midnight – displays the time the unit has been turned on since midnight. This will reset if you
restore ‘All Unit Defaults’ from the ‘System’ tab.
‘Timers’ tab of the Setup Tab
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Main Menu
‘Time’ tab
The ‘Time’ tab allows you to set the time format and zone. You can also set the unit to conform to
Daylight Savings. The current time and date is displayed at the bottom of the page.
To open the ‘Time’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from the
vertical tab list. Then select ‘Time’ from the row of tabs along the top of the page.
Time Format – enables 12 or 24 hour (military) time format.
Time Zone – allows you to choose your correct time zone to show correct local time. Select ‘UTC’ for
Greenwich Time or select ‘Other’ to enter a UTC Offset. The UTC Offset is how many hours you are
ahead or behind the time line. See the Appendix for a list of time offsets.
Daylight Savings – allows you to choose from ‘Auto’, ‘On’, or ‘Off’ to adjust for daylight savings.
‘Units’ tab
The ‘Units’ tab allows you to customize measurement units for the entire system. To open the ‘Units’
tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from the vertical tab list. Then
select ‘Units’ from the row of tabs along the top of the page.
Distance and Speed – sets the units to Nautical (nm, kt)’, ‘Statute (mi, mh)’, or ‘Metric (km, kh)’.
Direction Display – sets the units to use ‘Cardinal Letter’, ‘Numeric Degrees’, or ‘Mils’. Mils is a unit of
angle measurement used in military settings, in which 17.78 mils equal one degree.
Temperature – sets the units to ‘Fahrenheit (°F)’ or ‘Celsius (°C)’.
Elevation – sets the units to ‘Feet (ft)’ or ‘Meters (m)’.
Depth – sets the units to ‘Feet (ft)’, ‘Fathoms (fa)’, or ‘Meters (m)’.
Setup Tab
‘Time’ tab of the Setup Tab
‘Units’ tab of the Setup Tab
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Main Menu
Setup Tab
‘Location’ tab of the Setup Tab
‘Location’ tab
The ‘Location’ tab allows you to define settings for Location Format, Map Datum, Heading, and Magnetic Variation. To open the ‘Location’ tab, press the MENU key twice to open the Main Menu. Select
‘Setup’ from the vertical tab list. Then select ‘Location’ from the row of tabs along the top of the page.
Refer to the Appendix of this guide for more information about location formats and map datum.
Also visit the National Imagery and Mapping Agency at http://www.nima.mil, for more information on
grids and datum.
Location Format – changes the coordinate system in which a given position reading is displayed. You
should only change the position format if you are using a map or chart that specifies a different position
format or wish to use a format you are familiar with. 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/UsingaGarminGPSwithPaperLandMaps_Manual.pdf.
The default format is latitude and longitude in degrees, minutes, and thousandths of a minute
(hddd°mm.mmm’). For additional information on Loran TD setup, see the Appendix.
Map Datum – allows you to manually select the datum reference used to determine a given position.
The default setting is ‘WGS 84’. The unit automatically chooses the best datum depending upon your
chosen position format. Datums are used to describe geographic positions for surveying, mapping, and
navigation and are not actual maps built in the unit. Although over 100 datums are available (as listed in
the Appendix), you should only change the datum if you are using a map or chart that specifies a different datum.
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.
Specifying the User Grid Setup
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Main Menu
Heading – lets you select the reference used in calculating heading information. You can select from
‘Auto Mag Var’, ‘True’, ‘Grid’ and ‘User Mag Var’. ‘Auto Mag Var’ provides magnetic north heading references that are automatically determined from your current position. ‘True’ provides headings based upon
a true north reference. ‘Grid’ provides headings based on a grid north reference (and is used in conjunction with the grid position formats). ‘User Mag Var’ allows you to specify the magnetic variation at your
current position and provides magnetic north heading references based upon the variation you enter.
Enter the magnetic variation of your current position in the ‘Magnetic Variation’ field if you have selected
‘User Mag Var’ for the heading.
Setup Tab
WARNING: The unit does not automatically calculate and update the magnetic variation at
your present position if ‘User Mag Var’ is selected. You must periodically update the magnetic
variation as your position changes. Failure to update this setting may result in substantial
differences between the information displayed on your unit and external references, such as a
magnetic compass.
‘Owner’ tab
The ‘Owner’ tab allows you to enter information about yourself, such as your name and address, and
the unit can display that information when it is turned on. This can be very helpful if your GPSMAP
276C is ever misplaced.
To open the ‘Owner’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’ from the
vertical tab list. Then select ‘Owner’ from the row of tabs along the top of the page.
Enter the desired information in the fields. You do not need to enter information in every field.
To display this information at power up, highlight the box next to ‘Show at Power-up’. Press ENTER/
MARK to place a check mark in the box. To hide the owner information at power-up, remove the check
mark from the box.
‘Location’ tab of the Setup Tab
‘Owner’ tab of the Setup Tab
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Main Menu
Setup Tab
‘COM 1’ tab of the Setup Tab
‘COM 1’ and ‘COM 2’ tabs
The ‘COM 1’ and ‘COM 2’ tabs allow you to control the input/output format used when connecting
your unit to external devices, such as a NMEA device, a DGPS beacon receiver, a personal computer, or
another Garmin GPSMAP 276C. If a DGPS receiver is used, WAAS capability is automatically turned off.
To open the Com 1 or ‘COM 2’ tab, press the MENU key twice to open the Main Menu. Select ‘Setup’
from the vertical tab list. Then select ‘Com 1’ or ‘Com 2’ from the row of tabs along the top of the page.
Serial Data Format – sets the data format to one of the following:
• Garmin Data Transfer – the proprietary format used to upload/download MapSource data,
exchange waypoint, route, track, almanac, and proximity data with a PC or another Garmin
GPSMAP 276C. ‘Garmin Data Transfer’ is disabled when the USB is connected and the unit
automatically switches to USB format.
When the USB is disconnected, the ‘USB’ field changes to ‘Transfer Mode’. There are 11 Transfer
Modes to choose from.
• GARMIN DGPS – used to connect the GPSMAP 276C with a Garmin DGPS beacon receiver.
• NMEA In/NMEA Out – supports the input/output of standard NMEA 0183 version 3.01 data,
and sonar NMEA input support for the DPT, MTW and VHW sentences.
• Text Out – allows the unit to output simple text data that includes, data, time, position and
velocity. The Baud can be set to 1200, 2400, 4800, or 9600.
• RTCM In – allows Differential GPS (DGPS) input using a standard RTCM format.
• RTCM In/NMEA Out – allows Differential GPS (DGPS) input using a standard RTCM format and
also provides NMEA 0183 version 3.01 output.
• RTCM In/Text Out – allows Differential GPS (DGPS) input using a standard RTCM format and
also outputs simple text data that includes, data, time, position and velocity.
• None – provides no interfacing capabilities.
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Main Menu
If ‘GARMIN DGPS’ or ‘RTCM In/NMEA Out’ format is selected, additional fields are provided to
control a Garmin differential beacon receiver directly from your GPSMAP 276C. You may 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.
Setup Tab
To have the unit automatically scan for a frequency:
1. With the unit set to ‘GARMIN DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the ‘Beacon’ field and press ENTER/MARK.
2. Highlight ‘Scan’ and press ENTER/MARK. 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.
To restart the scan:
1. Press MENU.
2. Highlight ‘Restart Scan’ and press ENTER/MARK.
‘COM 1’ tab of the Setup Tab
To manually enter a frequency and bit rate:
1. With the unit set to ‘GARMIN DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the “Beacon” field and press ENTER/MARK.
2. Highlight ‘User’ and press ENTER/MARK.
3. Highlight the ‘Frequency’ or ‘Bit Rate’ field, press ENTER/MARK, then enter a frequency or bit rate
and press ENTER/MARK when done.
‘COM 2’ tab of the Setup Tab with GARMIN DGPS selected
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Main Menu
Setup Tab
‘COM 2’ tab of the Setup Tab with GARMIN DGPS selected
The ‘Status’ field displays one of the following:
• Tuning: Unit is attempting to tune to the specified frequency and bit rate.
• Scanning: Unit is automatically scanning through the frequencies and bit rates.
• Receiving: Unit is receiving DGPS signal and ready for operation.
• Check Wiring: Unit is not making connection with DGPS receiver.
When the unit is receiving a DGPS signal, the ‘SNR’ (Signal to Noise Ratio) and ‘Distance’ fields will
show data. The SNR range is 0dB to 30dB, with 30 being the best. The Distance may or may not show
data, depending upon the signal being broadcast from the DGPS site.
The DGPS beacon transmitters are operated by the U.S. 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/.
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Main Menu
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 can be customized to shorten
the update time from the unit. If too many NMEA sentences are activated, the unit may take longer than
two seconds to update.
The GPSMAP 276C NMEA data transmission can be customized to keep the output rate at two
seconds. If the unit is set up to output all of the available NMEA sentences, the output rate may exceed
two seconds.
Setup Tab
To access the Advanced NMEA Output Setup:
1. Press the MENU key twice to open the Main Menu.
2. Use the ARROW KEYPAD to select ‘Setup’ from the vertical tab list.
3. Use the ARROW KEYPAD to select ‘Com 1’ or ‘Com 2’ from the row of tabs along the top of the
page.
‘COM 1’ tab of the Setup Tab
4. Use the ARROW KEYPAD to highlight the field below ‘Serial Data Format’. Press ENTER/MARK.
5. Use the ARROW KEYPAD to select ‘NMEA In/NMEA Out’. Press ENTER/MARK.
6. Press MENU. Select ‘Advanced NMEA Setup’ and press ENTER/MARK.
The ‘Advanced NMEA Output Setup’ page allows you to turn on/off the GPS status (GSA. GSV),
Waypoint/Route (WPL, RTE), the GARMIN Proprietary sentences, and Waypoint IDs. You can also
change the precision of the Lat/Lon minutes.
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
‘COM 2’ tab of the Setup Tab with GARMIN DGPS selected
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Appendix
Specifications
Physical Specifications
Size:
5.7” W x 3.2” H x 1.9” D
(14.5 x 8.1 x 4.8 cm)
Weight: 13.6 ozs (.39 kg)
Display: 3.75” diagonal (9.5 cm)
Transflective, 256-color display with
backlighting (480 x 320 pixels)
Case:
Fully-gasketed, high-impact plastic
alloy, waterproof to IEC
60529 IPX7
Temp. Range: 5°F to 140°F (-15°C to 60°C)
Performance
Battery Life:
Receiver:
Acquisition Times:
Update Rate:
GPS Accuracy:
DGPS (USCG) Accuracy:
DGPS (WAAS) Accuracy:
Velocity Accuracy:
Dynamics:
5 to 15 hours depending upon the backlight setting
Differential-ready 12 parallel channel receiver
Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (First Time/AutoLocate™)
1/second, continuous
*< 15 meters (49 feet) RMS 95% typical
3-5 meters (10-16 ft), 95% typical
3 meters (10 ft) 95% typical with DGPS corrections
0.1 knot RMS steady state
6g's
* Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective Availability Program.
Power
Battery:
Source:
Fuse:
Rechargeable Lithium ion
11–35V DC
3AG - 1.5 Amp
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Appendix
Cleaning the Unit
The GPSMAP 276C is constructed of high quality materials and does not require user maintenance
other than cleaning. Clean the unit using a cloth dampened with a mild detergent solution and then
wipe dry. Avoid chemical cleaners and solvents that may damage plastic components.
Care Information
Storing the GPSMAP 276C
Do not store the GPSMAP 276C where prolonged exposure to temperature extremes may occur (such
as in the trunk of a car) as permanent damage may result. User information, such as waypoints and
routes 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).
Immersing the Unit in Water
The GPSMAP 276C is waterproof to IEC Standard 60529 IPX7. It can withstand immersion in 1
meter of water for 30 minutes. Prolonged submersion can cause damage to the unit. After submersion,
be certain to wipe and air dry the unit before reuse or charging.
To resolve problems that cannot be remedied using this guide, contact Garmin Product Support in the
U.S.A. at 800/800.1020 or Garmin Europe at 44/1794.519944.
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Appendix
Accessories
Standard Accessories
The following standard accessories are included with your GPSMAP 276C:
Owner’ Manual
Quick Reference Guide
Marine Mount
PC USB Cable
AC Power Cable
Bare Wire Power/Data Cable
Trip & Waypoint Manager CD-ROM
Optional Accessories
In addition to the standard accessories included with your GPSMAP 276C, the optional accessories
listed on the next page are designed to enhance the operation of the GPSMAP 276C.
To obtain replacement parts and optional accessories, contact your Garmin Dealer, Garmin Customer
Support in the U.S.A. at 800-800-1020, or Garmin Europe at 44-1794-519944.
WARNING: Garmin accessories have been designed and specifically tested for use with
Garmin products. Accessories offered for sale 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.
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Appendix
Auto Navigation Kit – Provides the necessary parts 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 GPSMAP 276C to operate from the
vehicle’s power system through the cigarette lighter adapter. Provides a speaker for vocal prompts.
PC Interface Cable – Connects your GPSMAP 276C to a serial port on your computer.
Cigarette Lighter Adapter – Allows you to connect the GPSMAP 276C to a vehicle’s electrical system.
Programmable Data Cards – Blank data cards available in 8 MB, 16 MB, 32 MB, 64 MB, and 128
MB sizes. Download street-level map detail, points of interest, business addresses and phone numbers,
marine data, topographical information and more 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; with storage 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, Fishing Hot Spots and Topo.
Pre-Programmed Data Cards – Data cards pre-programmed with either Garmin BlueChart or Fishing
Hot Spots map data.
Accessories
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Appendix
Wiring and Interfacing
Ground
Black
Voice (-)
Orange
Data Out 1
Blue
Alarm
White
Data In 2
Green
Voice (+)
Brown
Power
Red
Data In 1
Yellow
Data Out 2
Violet
Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 276C to an 11–35-Volt DC system and provides interface
capabilities for connecting external devices. The color code in the diagram below indicates the appropriate harness connections. Replacement fuse is a 3AG - 1.5 Amp fuse.
Red: Power
Black: Ground
RXD +
Autopilot/
NMEA Device
Yellow: Data In 1
Ground
Black
Data In 2
Green
Alarm
White
Power
Red
Voice (+)
Brown
Data Out 2
Violet
Data In 1
Yellow
Power/Data Cable Connector
RXD -
Brown
Unit Power/Data Connector
Voice (-)
Orange
(+)
11–35V DC
Blue: Data Out 1
Data Out 1
Blue
(-)
GBR 23
Beacon
Blue Receiver
(+)
(-)
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 PSLIB.
The GPSMAP 276C also includes NMEA input with support for the BWC, DBT, DPT, MTW, VHW,
and XTE sentences.
Garmin’s proprietary communication protocol is available from the Web site (www.garmin.com).
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Appendix
What are Map Datums and which should I use?
A datum is a mathematical model of the Earth which 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 (such as trig. stations) 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 the GPSMAP
276C can be set to match most of those commonly used.
If you are navigating and comparing the GPS coordinates to a map, chart, or other reference, the map
datum in the GPS unit should be set to the same datum as the map or chart to ensure the most accurate
navigation.
What is a Location Format and which should I use?
Your current location can be viewed on the GPS in the form of coordinates. Since different maps and
charts use different location formats, Garmin GPS units allow you to choose the correct coordinate system
for the type of map you are using. The most common format is latitude and longitude, which is utilized
by all Garmin units. You may choose to change the location format to use with other coordinate systems
in Location Preferences. UTM/UPS (Universal Transverse Mercator/Universal Polar Stereographic) are
easy-to-use metric grids that are found on most USGS topographic quadrangle maps. Several other grids,
including a user-definable grid (for the advanced user), may also be selected.
Map Datums and Location
Formats
Map Datums are based on a mathematical model of the Earth.
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Appendix
Map Datum List
Adindan
Adindan- Ethiopia, Mali, Senegal, Sudan
Afgooye
Afgooye- Somalia
AIN EL ABD ‘70
AIN EL ANBD 1970- Bahrain Island, Saudi
Arabia
Anna 1 Ast ‘65
Anna 1 Astro ‘65- Cocos I.
ARC 1950
ARC 1950- Botswana, Lesotho, Malawi,
Swaziland, Zaire, Zambia
ARC 1960
Kenya, Tanzania
Ascnsn Isld ‘58
Ascension Island ‘58- Ascension Island
Astro Dos 71/4
Astro Dos 71/4- St. Helena
Astro B4 Sorol
Chua Astro
Chua Astro- Paraguay
L.C. 5 Astro
Cayman Brac Island
Corrego Alegr
Corrego Alegre- Brazil
Liberia 1964
Liberia 1964- Liberia
Croatia
Croatia
Luzon Mindanao
Luzon- Mindanao Island
Djakarta
Djakarta (Batavia)- Sumatra Island (Indonesia)
Luzon Philippine Luzon- Philippines (excluding Mindanao Isl.)
Dos 1968
Dos 1968- Gizo Island (New Georgia Islands)
Mahe 1971
Dutch
Dutch
Marco Astro
Marco Astro- Salvage Isl.
Easter Isld 67
Easter Island 1967
Massawa
Massawa- Eritrea (Ethiopia)
European 1950
European 1950- Austria, Belgium, Denmark,
Finland, France, Germany, Gibraltar, Greece, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland
Merchich
Merchich- Morocco
Mahe 1971- Mahe Island
Midway Ast ‘61
Midway Astro ‘61- Midway
Minna
Minna- Nigeria
European 1979- Austria, Finland, Netherlands,
Norway, Spain, Sweden, Switzerland
NAD27 Alaska
North American 1927- Alaska
NAD27 Bahamas
North American 1927- Bahamas
Finland Hayfrd
Finland Hayford- Finland
NAD27 Canada
North American 1927- Canada and Newfoundland
Sorol Atoll- Tern Island
Gandajika Base
Gandajika Base- Republic of Maldives
NAD27 Canal Zn North American 1927- Canal Zone
Astro Bcn “E”
Astro Beacon “E”- Iwo Jima
GDA
Geocentric Datum of Australia
NAD27 Caribbn
Astr Stn ‘52
Astronomic Stn ‘52- Marcus Island
Geod Datm ‘49
Geodetic Datum ‘49- New Zealand
Aus Geod ‘66
Australian Geod ‘66- Australia, Tasmania Island
Guam 1963
Guam 1963- Guam Island
North American 1927- Caribbean (Barbados, Caicos
Islands, Cuba, Dominican Repuplic, Grand Cayman,
Jamaica, Leeward and Turks Islands)
Australian Geod ‘84- Australia, Tasmania Island
Gux 1 Astro
Guadalcanal Island
NAD27 Central
Aus Geod ‘84
Austria
Austria
Hjorsey 1955
Hjorsey 1955- Iceland
North American 1927- Central America (Belize,
Costa Rica, El Salvador, Guatemala, Honduras,
Nicaragua)
Bellevue (IGN)
Efate and Erromango Islands
Hong Kong ‘63
Hong Kong
NAD27 CONUS
North American 1927- Mean Value (CONUS)
Bermuda 1957
Bermuda 1957- Bermuda Islands
Hu-Tzu-Shan
Taiwan
NAD27 Cuba
North American 1927- Cuba
Bogota Observ
Bogata Obsrvatry- Colombia
Indian Bngldsh
Indian- Bangladesh, India, Nepal
NAD27 Grnland
North American 1927- Greenland (Hayes Peninsula)
Campo Inchspe
Campo Inchauspe- Argentina
Indian Thailand
Indian- Thailand, Vietnam
NAD27 Mexico
North American 1927- Mexico
Canton Ast ‘66
Canton Astro 1966- Phoenix Islands
Indonesia 74
Indonesia 1974- Indonesia
NAD27 San Sal
North American 1927- San Salvador Island
Cape
Cape- South Africa
Ireland 1965
Ireland 1965- Ireland
NAD83
Cape Canavrl
Cape Canaveral- Florida, Bahama Islands
ISTS 073 Astro
ISTS 073 ASTRO ‘69- Diego Garcia
North American 1983- Alaska, Canada, Central
America, CONUS, Mexico
Carthage
Carthage- Tunisia
Johnston Island
Johnston Island NAD27 Central
Naparima BWI
Naparima BWI- Trinidad and Tobago
CH-1903
CH 1903- Switzerland
Kandawala
Kandawala- Sri Lanka
Nhrwn Masirah
Nahrwn- Masirah Island (Oman)
Chatham 1971
Chatham 1971- Chatham Island (New Zealand)
Kergueln Islnd
Kerguelen Island
Nhrwn Saudi A
Nahrwn- Saudi Arabia
Kertau 1948
West Malaysia, Singapore
Nhrwn United A
Nahrwn- United Arab Emirates
European 1979
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Appendix
Obsrvtorio ‘66
Observatorio 1966- Corvo and Flores Islands
(Azores)
Timbalai 1948
Old Egyptian
Old Egyptian- Egypt
Tokyo
Tokyo- Japan, Korea, Okinawa
Old Hawaiian
Old Hawaiian- Mean Value
Tristan Ast ‘68
Tristan Astro 1968- Tristan da Cunha
Oman
Oman- Oman
Viti Levu 1916
Viti Levu 1916- Viti Levu/Fiji Islands
Ord Srvy GB
Old Survey Great Britain- England, Isle of Man,
Scotland, Shetland Isl., Wales
Wake-Eniwetok
Wake-Eniwetok- Marshall
WGS 72
World Geodetic System 72
Pico De Las Nv
Canary Islands
WGS 84
World Geodetic System 84
Potsdam
Potsdam-Germany
Zanderij
Zanderij- Surinam (excluding San Salvador Island)
Prov S Am ‘56
Prov So Amricn ‘56- Bolivia, Chile,Colombia,
Ecuador, Guyana, Peru, Venezuela
User
User-defined custom datum
Prov S Chln ‘63
So. Chilean ‘63- S. Chile
Ptcairn Ast ‘67
Pitcairn Astro ‘67- Pitcairn
Puerto Rico
Puerto Rico & Virgin Isl.
Qatar National
Qatar National- Qatar South Greenland
Qornoq
Qornoq- South Greenland
Reunion
Reunion- Mascarene Island
Rome 1940
Rome 1940- Sardinia Isl.
RT 90
Sweden
Santo (Dos)
Santo (Dos)- Espirito Santo
Sao Braz
Sao Braz- Sao Miguel, Santa Maria Islands
Sapper Hill ‘43
Sapper Hill 1943- East Falkland Island
Schwarzeck
Schwarzeck- Namibia
SE Base
Southeast Base- Porto Santo and Madiera Islands
South Asia
South Asia- Singapore
Sth Amrcn ‘69
S. American ‘69- Argentina, Bolivia, Brazil, Chile,
Colombia, Ecuador, Guyana, Paraguay, Peru,
Venezuela, Trin/Tobago
SW Base
Southwest Base- Faial, Graciosa, Pico, Sao Jorge and
Terceira
Taiwan
Taiwan
Timbalai 1948- Brunei and E. Malaysia (Sarawak
and Sabah)
Map Datum List
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Appendix
Time Offsets
The chart below gives an approximate UTC (Universal Time Coordinate) time offset for the various
longitudinal zones. Check with local charts for more detailed information. If you are in daylight savings
time, add one hour to the offset.
Longitudinal Zone
W180.0º to W172.5º
W172.5º to W157.5º
Offset
-12
-11
W157.5º to W142.5º
W142.5º to W127.5º
W127.5º to W112.5º
W112.5º to W097.5º
W097.5º to W082.5º
W082.5º to W067.5º
W067.5º to W052.5º
W052.5º to W037.5º
W037.5º to W022.5º
W022.5º to W007.5º
W007.5º to E007.5º
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
Longitudinal Zone
E007.5º to E022.5º
E022.5º to E037.5º
E037.5º to E052.5º
E052.5º to E067.5º
E067.5º to E082.5º
E082.5º to E097.5º
E097.5º to E112.5º
E112.5º to E127.5º
E127.5º to E142.5º
E142.5º to E157.5º
E157.5º to E172.5º
E172.5º to E180.0º
Offset
1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
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Appendix
Approaching Turn: You are nearing a turn in a route.
Arriving at Destination: You are nearing your destination.
Batteries Low: The unit has less than 10 minutes of battery left.
Cannot display all found, use city or postal code: The unit found too many items to display. Narrow
the search using the city or postal code.
Cant Unlock Maps: No applicable unlock code for one or more maps was found. All MapSource map
are not accessible.
Database Error: Internal problem with the unit. Contact your dealer or Garmin Customer Service to
have the unit repaired.
Deep Water: The water is deeper than the amount set in the Deep Water Alarm.
Dragging Anchor: The distance set in the Anchor Alarm is exceeded.
Lost Satellite Reception: The unit is unable to continue receiving satellite signals.
Memory Full: Unit memory is full, no further data can be saved.
Near Proximity Point: You have reached the distance set for a proximity waypoint.
No Diff GPS Location: RTCM is selected but the unit is not receiving DGPS data.
None Found: No data matched the search criteria.
No Tide Stations for that Area: No tide stations within 100 miles of the area.
Off Course: You are off course 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 Memory Full: No additional routes can be saved.
Messages
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Appendix
Messages
Route Truncated: Uploaded route from another device has more than 50 waypoints.
Route Waypoint Memory Full: No additional route waypoints can be saved.
Shallow Water: The water is shallower than the amount set in the Shallow Water Alarm.
Track Already Exists: A saved track with the same name already exists.
Track Log Full: Indicates the track log is full and track recording has been turned off. In order to record
more track points, you will need to clear the track log and turn track recording on. This will only be
displayed when ‘Record Mode’ is set to ‘Off’.
Track Memory Full: No more track data can be stored without deleting old data.
Track Truncated: A complete uploaded track will not fit in memory. The oldest track log points have
been deleted.
Transfer Complete: Data transfer has been completed.
Waypoint Already Exists: A waypoint with the same name already exists.
Waypoint Memory Full: The unit has stored the maximum number of waypoints.
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Appendix
LORAN TD System
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 U.S. Coastal Confluence Zone. From the perspective of a mariner, the
system is used for ocean and coastal navigation. It can be used as a supplemental system for harbor and
harbor approach navigation, and it is used for inland navigation by recreational vehicles.
LORAN TD Feature
The LORAN TD (Time Delay) feature eases the transition from using LORAN to using GPS. The
GPSMAP unit automatically converts GPS coordinates to LORAN TDs for those who have a collection
of LORAN fixes for favorite fishing spots and other waypoints recorded as TDs. You can display your
position as a TD or enter waypoints as TDs. The accuracy to be expected from this conversion is approximately thirty (30) meters. When the unit is placed in the LORAN TD format mode, it simulates the
operation of a LORAN receiver. Position coordinates may be displayed as TDs, and all navigation functions may be used as if the unit was actually receiving LORAN signals.
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, change the secondary
stations or offsets in the Setup TD field, the active waypoint information will reflect those changes. Since
the GPSMAP 276C does not rely on the LORAN signal for navigation, it can reference a different GRI
chain and/or secondary stations and still navigate to the location stored in memory.
The LORAN Position Format field is located under the ‘Units’ tab in the Main Menu. The ‘LORAN
TD Setup’ window contains the fields to select the Loran GRI-Chain Number, Primary and Secondary
Stations, and TD Offsets.
LORAN TD Setup
‘Location’ tab of the Setup Tab
LORAN TD Setup
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Appendix
To set up Loran TD from the Main Menu:
LORAN TD Setup
1. Press the MENU key twice to display the Main Menu.
2. Use the ARROW KEYPAD to highlight Setup’ on the vertical tab list. Then select ‘Location’ from the
row of tabs along the top of the page.
2. Using the ARROW KEYPAD, highlight the ‘Location Format’ field and press ENTER/MARK.
3. Highlight ‘Loran TD’, press ENTER/MARK.
4. Highlight the Setup Button located on the right side of the ‘Location Format’ field and press ENTER/
MARK.
5. To change the settings of any of the five fields, highlight the field, press ENTER/MARK select/enter
the desired setting, then press ENTER/MARK.
6. When done, highlight the ‘Save’ button and press ENTER/MARK.
‘Location’ tab of the Setup Tab
If the active GRI Chain, secondary stations, or offsets have been changed since the waypoint was
created, the waypoint will now reference the active GRI-chain and secondary stations and adjust the
TD coordinates accordingly. Remember that the GPS is not relying on the LORAN signal for navigation
and actually converts the TD coordinate to a useful LAT/LON 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, secondary stations to create a LORAN TD position. For
more information please read our LORAN TD Position Format Handbook, available at the Garmin Web
site, at www.garmin.com/support/userManual.html.
LORAN TD Setup
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Appendix
Installing and Removing Data Cards
The GPSMAP 276C uses an optional Garmin data cards to display digital charts and maps on-screen
or save user data. Install the data card in the card slots located on the bottom of the unit. Install or
remove the data card at any time, whether the unit is on or off.
Garmin Data Cards
To install a data card:
1. Insert the card with the label facing the front of the unit into the slot.
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 will take 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/MARK 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 for assistance.
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.
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.
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Appendix
WAAS and DGPS
What is WAAS?
The Wide Area Augmentation System (WAAS) is an F.A.A. funded project to improve the overall
integrity of the GPS signal. It is a space-based system that broadcasts integrity information and correction data as determined by ground reference stations (see below). Current tests have shown the actual
accuracy to be on the order of 2–3 meters. For more information, go to http://gps.faa.gov/Programs/WAAS/
waas.htm.
NOTE: If you are using the GPSMAP 276C outside of the U.S.A., it is recommended that you
turn off WAAS for the most accurate location fix.
What is Differential GPS (DGPS)?
The U.S. 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.
Please refer to the U.S. Coast Guard’s web site: http://www.navcen.uscg.gov/ for locations and the status
of the differential sites. Using DGPS requires additional equipment.
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Appendix
Accuracy— Estimated position accuracy in feet or meters.
Data Field Options
Battery Timer— The estimated time left on the battery (before it will need to be recharged.
Bearing—The direction from your current location to a destination.
Course—The direction from your starting location to a destination.
Course to Steer— The recommended direction to steer in order to reduce cross-track error and return to the course line.
Cross Track— The distance you are off a desired course in either direction, left or right.
Depth—(Marine Only) The distance from the surface of the water to the bottom.
Distance (Destination)— The ‘great circle’ distance from current location to a Go To destination, or the final waypoint in a route.
Distance (Next)— The ‘great circle’ distance from current location to a Go To destination, or the next waypoint in a route.
ETA (Destination)— Estimated Time of Arrival. The estimated time you will reach a Go To destination, or the final waypoint in a route.
ETA (Next)— Estimate Time of Arrival. The estimated time you will reach a Go To destination, or the next waypoint in a route.
ETE (Destination)— Estimated Time Enroute. The estimated time required to reach a Go To destination, or the final waypoint in a route.
ETE (Next)— Estimated Time Enroute. The estimated time required to reach a Go To destination, or the next waypoint in a route.
Elevation—(Marine and Automotive Only) The altitude (height) above or below sea level.
Location (Lat/Lon)—Your current Latitude and Longitude in hdddº mm.mmm’ and WGS 84. (Trip computer only)
Location (Selected)—You current GPS location displayed in the format you selected in for the ‘POSITION FORMAT’ field in the Set Units Page. (Trip
computer only)
Max Speed—The maximum speed the unit has moved.
Next Course— The remaining distance of the route.
Next Turn—The remaining distance to the next waypoint on the route.
Pointer—(Marine and Automotive Only) Display a direction pointer.
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Appendix
Data Field Options
Power—(Marine and Automotive Only) Display the power indicator icon: Battery, External Power, or Charging.
Speed—Display rate of travel in miles/kilometers/nautical miles per hour.
Sunrise—The time at which the sun rises on this day.
Sunset—The time at which the sun sets on this day.
Time—The time for the selected time zone.
Track— The direction of movement relative to a ground position. Also referred to as ‘ground track’.
Trip Avg Speed (Moving)— Average speed of unit when moving since last reset.
Trip Avg Speed (Total)— Average speed of unit for both moving and stopped speeds since last reset.
Trip Odometer—A running tally of distance travelled since last reset.
Trip Timer (Moving)— Time the unit has been moving since last reset of the trip timers.
Trip Timer (Total)— Total time the unit has been in operation since last reset of the trip timers.
Turn—The angle difference (in degrees) between the bearing to your destination and your current line of travel. ‘L’ means turn Left. ‘R’ means turn Right.
User Timer— Display the user timer set in the Main Menu.
Velocity Made Good—The speed at which you are closing on a destination along a desired course.
Voltage— Direct current voltage level of an external power source.
Water Speed—(Marine Only) Speed while traveling on water.
Water Temperature—(Marine Only) Temperature of the water.
Waypoint (Destination)— The final waypoint in the route, or the destination waypoint.
Waypoint (Next)— The next waypoint in the route.
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Appendix
FCC Compliance
The GPSMAP 276C complies with Part 15 of the FCC interference limits for Class B digital devices
FOR HOME OR OFFICE USE. These limits are designed to provide more reasonable protection against
harmful interference in a residential installation, and are more stringent than “outdoor” requirements.
Operation of this device is subject to the following conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received, including interference that may
cause undesired operation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
The GPSMAP 276C does not contain any user-serviceable parts. Repairs should only be made by
an authorized Garmin service center. Unauthorized repairs or modifications could result in permanent
damage to the equipment, and void your warranty and your authority to operate this device under Part
15 regulations.
Compliance, License, and
Warranty Information
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Appendix
Software License Agreement
Compliance, License, and
Warranty Information
Serial Number
Use this area to record the serial number in case it is lost, stolen,
or needs service. Be sure to keep your original sales receipt in a
safe place or attach a photocopy inside the manual. The 8-digit
number is located on the back of the unit under the wrist strap
Serial Number:
NOTE: If you have previously registered a Garmin product
purchase, we invite you to re-register using our NEW online system. Many services provided by our new product
registration system are now being automated and re-registering
your purchase ensures you the best possible support from
Garmin.
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 in 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.
Product Registration and Support
Help us better support you by completing your online registration today! Have the serial number of
your GPSMAP 276C handy and connect to the Garmin Web site (www.garmin.com). Look for the Product Registration link on the home page. Also, be sure to record your serial number in the space provided
to the left.
If you have any questions, Garmin’s Product Support department may be reached Monday through
Friday, 8:00 AM to 5:00 PM Central Standard Time, by phone at 1-800-800-1020, or by e-mail at
sales@garmin.com.
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Appendix
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.
Compliance, License, and
Warranty Information
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.
To obtain warranty service, call your local Garmin authorized dealer. Or call Garmin Customer Service at one
of the numbers listed to the left 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 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.
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.
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Appendix
Safety Information
WARNING: The GPSMAP 276C contains a lithium ion
rechargeable battery. The battery used in this device may
present a risk of fire or chemical burn if mistreated. Do not
recharge out of the unit, disassemble, heat above 140°F (60°C),
or incinerate.
WARNING: If original battery must be removed for
replacement, dispose of used battery properly. Contact your
local waste disposal department for information on proper
disposal of lithium-ion batteries. Keep used battery away from
children. Do not disassemble and do not dispose of in fire.
WARNING: Only replace with Garmin Lithium-Ion Battery
Pack (Garmin Part Number 010-10517-00). Use of another
battery may present a risk of fire or explosion.
CAUTION: Use the GPSMAP 276C at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’s Manual – and thoroughly practice operation using
Simulator Mode prior to actual use. When in actual use, carefully compare indications from the GPSMAP
276C to all available navigation sources, including information from other NAVAIDs, visual sightings,
charts, etc. For safety, always resolve any discrepancies before continuing navigation.
CAUTION: IT IS THE USER’S RESPONSIBILITY TO USE THIS PRODUCT PRUDENTLY. THIS
PRODUCT IS INTENDED TO BE USED ONLY AS A NAVIGATIONAL AID AND MUST NOT BE USED
FOR ANY PURPOSE REQUIRING PRECISE MEASUREMENT OF DIRECTION, DISTANCE, LOCATION
OR TOPOGRAPHY. THIS PRODUCT SHOULD NOT BE USED TO DETERMINE GROUND PROXIMITY FOR AIRCRAFT NAVIGATION.
CAUTION: The electronic chart is an aid to navigation and is designed to facilitate the use of authorized government charts, not replace them. Only official government charts and notices to mariners
contain all information needed for save navigation – and, as always, the user is responsible for their
prudent use.
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 as required in product literature and copyright
messages displayed to the consumer. Virtually all data sources contain inaccurate or incomplete data to
some degree. This is particularly true outside the United States, where complete and accurate digital data
is either not available or prohibitively expensive.
WARNING: The Global Positioning System (GPS) is operated by the United States government,
which is solely responsible for its accuracy and maintenance. The system is subject to changes which
could affect the accuracy and performance of all GPS equipment. Although the Garmin GPSMAP 276C
is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted, and
therefore become unsafe.
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Appendix
Because the Garmin GPSMAP 276C can be used for vehicular navigation, important safety considerations must be followed. Please read and observe the following instructions.
WARNING: For use in vehicles, it is the sole responsibility of the owner/operator of a vehicle with
the GPSMAP 276C installed to place and secure the device so it will not interfere with the vehicle operating controls and safety devices, obstruct the driver’s view of driving conditions, or cause or personal
injury in the event of an accident.
Do not mount the unit over airbag panels or in the field of airbag deployment. Airbags expand with a
rapid force that can propel objects in their path towards the vehicle driver or passengers causing possible
injury. Refer to airbag safety precautions contained in the vehicle owner’s manual.
Do not mount the unit in a place where the driver or passengers are likely to impact it in a collision.
The mounting hardware provided by Garmin is not warranted against collision damage or the consequences thereof.
Do Not Mount Where Driver’s
Field of Vision is Blocked
Do Not Mount in Front of
Airbag Panels
Safety Information
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.
Do Not Place Unsecured
on the Vehicle Dash
Do Not Mount in Front of an
Airbag Field of Deployment
WARNING: When used in vehicles, it is the sole responsibility of the driver of the vehicle to operate the vehicle in a safe manner, maintain full surveillance of all driving conditions at all times, and
not become distracted by the unit to the exclusion of safe driving practices. It is unsafe to operate the
controls of the unit while you are driving. Failure by the driver of a vehicle equipped with a GPSMAP
276C installed to pay full attention to operation of the vehicle and road conditions while the vehicle is in
motion could result in an accident with property damage and personal injury.
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Index
Symbols
24-hour format 83
2D 61, 62
3D 61, 62
A
Accessories 92, 93
Accuracy
Alarm 72
Circle 48
Acquiring Satellites 62
Activate 64
Go To 18
Route 26
Simulator 9
Active Route Page 25, 56
Options Menu 56
Active Track Tab 20, 67
Add Points to Route 21
Add Waypoint 56
Advanced NMEA Output Setup 89
Alarms
Proximity 38
Alarms Tab 70, 71, 72
Navigation Alarms 70, 71
Sonar Alarms 72
System Alarms 72
Anchor Drag 71
Antenna 1
Append Route 32
Arrival
Alarm 71
ARROW KEYPAD 2
Ask Me My Preference 81
Attention Tone 79
AutoLocate 62
Automotive Mode 2, 10, 11, 12, 13, 21,
22, 40, 44, 52, 54, 57, 59, 80
AutoZoom 48
Auto Arrange 16
Average Location 32
Avoidance Button 81
B
Backlight 5
Intensity 78
Timeout 78
Backlit 1
Basemap 48
Battery
Level 61
Pack 1
Saver Mode 80
Beacon Receiver 86
Bearing 105
Bearing Line 49
Beeper 79
BlueChart 14, 15
Bug Indicator 53
C
Cable 94
Calculate Routes for 81
Calculation Method 81
Cardinal Letter 83
Cards 103
Care Information 91
Cartography 40
Categories 14
Celestial Tab 73, 74, 75, 76
Hunt & Fish Tab 76
Sun & Moon Tab 75
Tide Tab 73, 74
Chain Number 101
Charge 61
Charge Mode 3
Check Beacon Wiring 63
Cities 14
Cleaning 91
Clear
Track 68
Track Log 67
Clock 72
Color Mode 78
Compass Page 13, 52, 53, 78
Options Menu 53
Computer
Trip 105
Com 1 and 2 Tabs 86, 87, 88, 89
Connecting the Power/Data Cable 94
Correction Signals 104
Count Down or Up 82
Course 105
Course Line 49
Course Pointer 53
Course Up 48
Create
Route 23, 24
Waypoint 31, 36
Waypoints 28, 29, 30
Current Route Page 57
Cursor 6
Mode 40
D
Data Card 103
Information 16, 45, 46
Port 1
Data Fields 26, 45, 105
Active Route Page 56
Compass 53
Highway 55
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Index
Map Page 45
Position Data Page 58
Daylight Savings 83
Deactivate 56
Declutter 44
Deep Water 72
Defaults 6
Active Track tab 69
Alarms 71
All Unit Settings 80
Display Tab 78
Settings 80
Sound Tab 79
Delete
Proximity Point 39
Route 26
Track 68
Track Log 67
Waypoint 34, 36
Depth 83
Detour 21
DGPS 104
Alarm 72
Beacon 86, 87
Differential Field 63
Differential GPS 104
Directions 44
Direction Display 83
Display 1
Display Tab 78
Distance and Speed 83
Drift 72
E
Edit
Route 25, 26, 27
Waypoint 33, 34
Waypoints 33
Edit on Map 56
Route 26
Edit Vias 21
Elevation 83, 105
ENTER/MARK Key 2
Entering Data 7, 8
Erase
Track 68
Track Log 67
Exits 14
External Power Source 61
External Speaker 5, 79
External Voltage
Alarm 72
F
Faster Time 81
FCC Compliance 107
Features 6
Field 6
Find 14
From 15
From a Different Location 14, 15
From Current Location 14
History 16
Key 2
Menu 14, 15, 16, 18
Find Current Location 4
Fishing 76
Following a Route 27
Fuel flow rates 27
G
Garmin Data Cards 103
Garmin Data Transfer 86
GARMIN DGPS 86, 87
Going to a Destination 17, 21
Go To 14, 18, 35
History 16
Point 17
Go To Point 21
GPS Off 62
GPS Tab 61, 62, 63
GRI Chain 102
Guidance Tab 82
H
Heading 85
Heading Line 44, 49
Highways
Avoid 81
Highway Page 54, 55, 78
Data Fields 55
Page Layout 55
Setup 55
Hunting 76
Hunt & Fish Tab 76
I
Icons 78
Information Page 15, 42
Initialize 4
Insert Waypoint 26
Interfacing 94
Interval 20, 67
Invert 56
Route 26
IN Key 2
Item Details 15
K
Keypad 2
L
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Index
Language 79, 80
Lat/Lon 105
Latitude 105
LCL 73
Legs
Track 20
Light Sectors 50
Limited Warranty 109
Lithium-ion 1, 3
Location 63, 105
Location Coordinates 30
Location Format 84
Location Formats 95
Location Tab 84
Lock to Roads 48
Log Filter 77
Longitude 105
Longitudinal Zone 98
LORAN TD Setup 101, 102
Lost Satellite Reception 62
M
Magnetic Variation 85
Main Menu 60
Alarms Tab 70, 71
Celestial Tab 73, 74, 75, 76
Display Tab 78
GPS Tab 61, 62, 63
Message Tab 77
Points Tab 65
Route Tab 64
Setup Tab 80, 81, 82, 83, 84, 85,
86, 87, 88
Sound Tab 79
Track Tab 66, 67, 68, 69
Main Pages 12–13
Man OverBoard 17, 20
MapSource 14, 15
Map Card 43
Map Data Information 110
Map Datum 84, 95
Map Datum List 96, 97
Map Page 40, 41, 42, 43, 44, 45, 46,
47, 48, 49, 50, 51
Options Menu 44
Setup Menu 47
Map Page Setup 47
Area Tab 51
City Tab 50
General Tab 48
Line Tab 49
Map Tab 48
Marine Tab 50
Mar Nav Tab 50
Point Tab 51
Road Tab 51
Topo Tab 51
Waypoint Tab 49
Map Scales 43
Marine Mode 2, 10, 12, 13, 17, 18, 19,
20, 21, 22, 40, 44, 45, 47, 52, 53,
54, 55, 56, 58, 80
Marking a Waypoint 7
Mark Position 28
Max Speed 105
Mean Lower Low Water 73
Measure Distance 34, 44, 45
MENU Key 2
Messages 99, 100
Message Tab 77
Mils 83
MOB 17, 20
Moonrise 75
Moonset 75
Moon Phase 75
Move around the Map 41
N
NAV/MOB 2, 18, 19, 20
Navaids 50
Navigate
Route 17, 18, 21, 22
To Point 17
Track 17, 19, 21, 22
Navigate Route 21
Navigating 17, 18, 19, 20
Automotive Mode 21, 22
Navigation 17, 18, 19, 20
Navigation Alarms 71
Nearest Type 58, 59
Near Current Route 14, 16
Near Destination 14, 16
Near Next 14, 16
Near Other 14, 16
New Altitude 63
New Location 9, 63
New Route 21
New Waypoint 30, 31
Next Distance 105
Next Turn
Alarm 71
Next Turn Pop-up 82
NMEA 86, 89, 94
NMEA In/NMEA Out 86
North Up 48, 63
No Beacon Signal 63
Numeric Degrees 83
O
Off-Route Recalculation 82
Offset 98
Off Course 71
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Index
Off Road 81
On-Screen Button 6
Options 7
Orientation 48
OUT Key 2
Overview 1
Overzoom 43
Owner Information 85
P
PAGE Key 2
Page Layout 44, 45
Compass 53
Highway 55
Position Data Page 58
Trip Computer 59
Page Sequence 13
Pan the Map 41
Persistent Alarm 70
Plan Route 26, 27, 56
Points of Interest 14
Points Tab 35, 65
Position Data Page 58
Data Fields 58
Page Layout 58
Position Format 105
Position Mode 40
Power 4, 94
Connector 1, 61
Key 2
Preferences
Location 95
Product Support 108
Project Location 31, 32
Proximity 38, 39
Alarms 38
Points Tab 38, 65
Waypoint 38
Q
QUIT Key 2
R
Ready to Navigate 4
Recalculate 21
Receiver Not Usable 62
Receiver Status 62
Receive Satellite Signals 4
Recently Found 16
Record Mode 20, 67
Reference Position 14
Registration 108
Remove Waypoint 26, 56
Reset Timer 82
Reset Trip 58, 59
Review
Waypoint 33
Waypoint List 35
Road 54
Road Routing Tab 81
Route 23, 24, 25, 26, 27
Append 32
Data Fields 26
Delete 26
Edit 25, 26, 27
Leg Transition 64
Options Menu 24, 64
Page 64
Plan 26, 27
Preference 81
Review 25
Review Options Menu 26
RTCM In 86
RTCM In/NMEA Out 86, 87
RTCM In/Text Out 86
S
Satellite Acquisition 4, 61
Saved Track 49
Tab 69
Save Present Location 28
Save Track Log 67, 68
Saving the Current Route 57
Scanning for Beacon 63
Scan for a Frequency 87
Scroll Bar 6
Searching for WAAS 63
Searching the Sky 62
Search History 16
Secondary Stations 101, 102
Selecting Options 7
Select Item on Map 41
Sentences 89, 94
Serial Data Format 86
Serial Number 1
Setup Tab 80, 81, 82, 83, 84, 85, 86,
87, 88, 89
Com 1 and 2 Tabs 86
Guidance Tab 82
Location Tab 84
Owner Tab 85
Road Routing Tab 81
System Tab 80
Timers Tab 82
Time Tab 83
Units Tab 83
Set an Alarm 70
Set Units 105
Set Up
Map 44
Routes 64
Shallow Water 72
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Index
Shorter Distance 81
Show Map 34
Signal Strength 61
Bars 4
Simulate 9, 10, 11, 63, 80
GPS 62
Navigation 10, 11
Software Version 80
Sonar Alarms 72
Sound 79
Sound Tab 79
Speaker 79
Volume 5
Specifications 90
Speed 106
Speed Filter 80
STA 73
Stop Navigation 17, 18, 56
Stop Time 106
Storage 91
Sunrise 106
Sunset 106
Sun & Moon Tab 75
Support 108
Switch Modes 12
System Alarms 72
System Information 80
System Tab 80
T
Temperature 83
Text Language 80
Text Out 86
Tide Chart 74
Tide Station 14, 74
Information 73
Tide Tab 73
Time 106
Timers Tab 82
Time Delay 101
Time Format 83
Time Offsets 98
Time Tab 83
Time Zone 83
Toll Roads 81
TracBack 17, 19, 20, 21, 22, 69
Track Legs 20
Track Log 20, 49, 66, 67
Track Review Page 68
Track Tab 66, 67, 68, 69
Track Up 48, 63
Trip Computer Page 59
Page Layout 59
Trip Odometer 106
Trip Planning 27
Tuning Beacon 63
Turn 106
Turn On and Off 4
U
U-Turns 81
Units Tab 83
Unit ID 80
Unpaved Roads 81
Usage Mode 12, 80
USB 1, 86
User Points Tab 35, 65
Using Differential 63
Using WAAS 63
UTC 98
UTM/UPS 95
V
Value 67
Velocity Made Good 106
Vias 21
View Details 42
Voice Language 79
Volume 5, 79
Warranty 109
Waterproof 91
Water Temp 72
Waypoint 14, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39
Create 28, 29, 30, 31
Delete 34, 36
Edit 33, 34
Information Page 15
Marking 7
Menu Options 32
Name 33
Proximity 38
Symbol 33
Transition 64
Waypoint Menu Options
Menu Options 32
Welcome Page 3
Wiring 94
Z
Zoom 43
W
WAAS 63
Wide Area Augmentation System
104
Warning Page 4
116
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For the latest free software updates (excluding map data) throughout the life of your
Garmin products, visit the Garmin Web site at www.garmin.com.
© Copyright 2004 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
www.garmin.com
Part Number 190-00335-00 Rev. A
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