Edelbrock 65913 (Ti-Tech Coated) Automobile Parts User Manual

Owner’s Manual
GPSMAP 496
®
portable aviation receiver
© 2006–2007 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street,
Olathe, Kansas 66062, USA
Tel. (913) 397.8200 or (800) 800.1020
Fax (913) 397.8282
Garmin (Europe) Ltd.
Liberty House
Hounsdown Business Park,
Southampton, Hampshire, SO40 9RB UK
Tel. +44 (0) 870.8501241 (outside the UK)
0808 2380000 (within the UK)
Fax +44 (0) 870.8501251
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®, MapSource®, and See-Thru® are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other
countries. These trademarks may not be used without the express permission of Garmin.
XM WX Weather and XM Radio are trademarks of XM Satellite Radio Inc.
November 2007
Part Number 190-00693-00 Rev. E
Printed in Taiwan
Introduction > About This Manual
Introduction
Thank you for choosing the Garmin GPSMAP® 496, an unsurpassed
portable aviation receiver that utilizes the proven performance of
Garmin GPS, full-featured built in City Navigator mapping, AOPA
Airport Directory, SafeTaxi Airport Diagrams, XM Radio, and XM
WX Weather. 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, contact your Garmin dealer immediately.
About This Manual
To get the most out of your new navigation system, read this manual
and learn the operating procedures for your unit.
Manual Conventions
This manual uses the term Warning to indicate a potentially
hazardous situation, which, if not avoided, could result in death or
serious injury.
This manual uses the term Caution to indicate a potentially
hazardous situation, which, if not avoided, may result in minor
injury or property damage. It may also be used without the symbol
to alert you to avoid unsafe practices.
GPSMAP 496 Owner’s Manual
Introduction > Table of Contents
Table of Contents
Introduction............................................................................i
About This Manual...................................................................... i
Warnings.................................................................................... v
Battery Warnings........................................................................vi
Important Information.................................................................vi
Getting Started......................................................................1
Unit Overview............................................................................. 1
Charging the GPSMAP 496....................................................... 2
Turning On the GPSMAP 496.................................................... 3
Getting Satellite Signals............................................................. 4
Learning About the Keypad........................................................ 7
Using the GPSMAP 496............................................................. 8
Simulator Mode.........................................................................11
Basic Operation In Aviation Mode....................................13
Aviation Mode Page Sequence................................................ 13
Creating a Direct To.................................................................. 14
Finding a Nearby Point............................................................. 18
Selecting an Approach............................................................. 23
Finding Points on Land............................................................. 25
Marking a Waypoint.................................................................. 26
Creating a Flight Plan (Route).................................................. 27
Following your Flight Plan........................................................ 28
ii
Aviation Mode Pages.........................................................29
Map Page................................................................................. 29
Terrain Page............................................................................. 37
Panel Page............................................................................... 40
Active Route Page.................................................................... 44
Position Data Page................................................................... 45
Flight Log.................................................................................. 46
Aircraft Information................................................................... 47
E6B Tab.................................................................................... 49
XM Audio Page......................................................................... 51
Basic Operation In Automotive Mode...............................55
Automotive Mode Page Sequence........................................... 55
Navigating in Automotive Mode................................................ 56
Finding an Item......................................................................... 58
Creating Routes....................................................................... 61
Creating Waypoints.................................................................. 63
Following an Automotive Route................................................ 66
Editing Your Route.................................................................... 67
Automotive Mode Pages and Features............................69
Map Page................................................................................. 69
Highway Page.......................................................................... 70
Current Route Page................................................................. 72
Trip Computer........................................................................... 73
Editing and Managing Routes.................................................. 74
Editing and Managing Waypoints............................................. 78
Managing Your Tracks.............................................................. 87
GPSMAP 496 Owner’s Manual
Introduction > Table of Contents
Basic Operation in Marine Mode.......................................91
Marine Mode Page Sequence.................................................. 91
Navigating in Marine Mode....................................................... 92
Marine Mode Pages and Features....................................93
Map Page................................................................................. 93
Compass Page......................................................................... 94
DSC.......................................................................................... 96
Main Menu.........................................................................101
GPS Tab................................................................................. 101
Weather Tab........................................................................... 102
XM Tab................................................................................... 102
Flights Tab.............................................................................. 103
Route Tab............................................................................... 103
Points Tab............................................................................... 104
Track Tab................................................................................ 104
Sonar Tab............................................................................... 105
Aircraft Tab............................................................................. 105
Alarms Tab............................................................................. 106
Celestial Tab........................................................................... 109
Message Tab...........................................................................113
Display Tab..............................................................................114
Sound Tab...............................................................................115
Setup Tab................................................................................116
Location Sub Tab.................................................................... 120
Using XM WX Weather.....................................................126
Viewing XM WX Weather....................................................... 126
Setting XM WX Weather Options........................................... 127
Using the Weather Tab........................................................... 130
Finding Weather Information.................................................. 133
Setting up and Using Sonar............................................135
Showing Sonar on the Map Page........................................... 135
Using the Sonar Page............................................................ 136
Setting Up the Sonar Page..................................................... 140
Understanding Sonar............................................................. 143
Viewing the Sonar Temperature Tab...................................... 146
TIS(Traffic Information Service)......................................147
TIS Limitations........................................................................ 148
TIS Symbology....................................................................... 150
Traffic Ground Track . ............................................................ 151
Traffic Warning Window......................................................... 151
Map Page............................................................................... 152
TIS Operational Procedures................................................... 153
VHF Comm........................................................................154
GPSMAP 496 Owner’s Manualiii
Introduction > Table of Contents
Appendix...........................................................................155
Specifications......................................................................... 155
Care Information ................................................................... 156
Optional Accessories.............................................................. 157
Installation Information........................................................... 158
Learning About GPS............................................................... 163
LORAN TD Setup................................................................... 165
Map Datums and Location Formats....................................... 167
Digital Selective Calling (DSC)............................................... 168
Jeppesen Database Information............................................ 170
Messages............................................................................... 171
Data Field Options.................................................................. 174
License Agreement and Warranty.......................................... 177
Index..................................................................................181
iv
GPSMAP 496 Owner’s Manual
Introduction > Warning
Warnings
Failure to avoid the following potentially hazardous situations could result in
an accident or collision resulting in death or serious injury.
• The unit is designed to provide route suggestions. It is not designed to replace the
need for driver attentiveness regarding road closures or road conditions, traffic
congestion, weather conditions, or other factors that may affect safety while
• When installing the unit in a vehicle, place the unit securely so it does not
driving.
obstruct the driver’s view of the road or interfere with vehicle operating controls,
• Use the electronic chart in the unit only to facilitate, not to replace, the use of
such as the steering wheel, foot pedals, or transmission levers. Do not place in
authorized government charts. Official government charts and notices to mariners
front of or above any airbag. (See diagram.)
and pilots (NOTAMs) contain all information needed to navigate safely.
Do not mount
Do not place
unsecured on • When navigating in an aircraft, use the GPSMAP 396 only as an aid for VFR
where driver’s
field of vision is
the vehicle
navigation. Use terrain and obstacle data only as an aid to situational awareness.
blocked.
dashboard.
• Use this unit only as a navigational aid. Do not attempt to use the unit for any
purpose requiring precise measurement of direction, distance, location, or
topography. This product should not be used to determine ground proximity for
Do not mount in front of an airbag field of deployment.
aircraft navigation.
• This TFR Overlay Display System (TDOS) is updated Monday -Friday,
• When navigating, carefully compare information displayed on the unit to all
1200-2000 UTC. COMFIRM DATA ACCURACY THROUGH ALTERNATE
available navigation sources, including information from street signs, visual
SOURCES AT OTHER TIMES. For interpretation of this TFR contact your local
sightings, and maps. For safety, always resolve any discrepancies or questions
FSS.
before continuing navigation and defer to posted road signs.
• Always operate the vehicle in a safe manner. Do not become distracted by
the unit while driving, and always be fully aware of all driving conditions.
Minimize the amount of time spent viewing the unit’s screen while driving and
use voice prompts when possible. Do not input destinations, change settings, or
access any functions requiring prolonged use of the unit’s controls while driving.
Pull over in a safe and legal manner before attempting such operations.
GPSMAP 496 Owner’s Manual
Introduction > Warning
Battery Warnings
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 provided in accordance with California’s Proposition 65. See
www.garmin.com/prop65 for more information.
• Contact your local waste disposal department to properly dispose of the unit/
battery.
• Do not leave the unit exposed to a heat source or in a high temperature location,
such as in the sun in an unattended vehicle on a hot day. To prevent damage,
remove the unit from the vehicle or store it out of direct sunlight, such as in the
glove box.
• Do not puncture or incinerate.
• When storing the unit for a limited length of time, store within the following
temperature range: -4° to 140°F (-20° to 60°C). When storing the unit for an
extended time, store within the following temperature range: 32° to 77°F (0° to
25°C).
• Do not operate the unit outside of the following temperature range: -4° to 131°F
(-20° to 55°C).
• Do not recharge the battery out of the unit or disassemble the battery.
• Keep the used battery away from children. Do not disassemble, puncture, or
damage the battery.
• Only replace with a Garmin lithium-ion battery pack. Using another battery
presents a risk of fire or explosion. To purchase a replacement battery, see your
Garmin dealer or the Garmin Web site.
Important Information
If these guidelines are not followed, the internal lithium-ion battery may experience
a shortened life span or may present a risk of damage to the GPS unit, fire, chemical
burn, electrolyte leak, and/or injury.
vi
Map Data Information: One of the goals of Garmin is to provide
customers with the most complete and accurate cartography that is available to us at
a reasonable cost. We use a combination of governmental and private data sources,
which we identify in product literature and copyright messages displayed to the
consumer. Virtually all data sources contain some inaccurate or incomplete data. In
some countries, complete and accurate map information is either not available or is
prohibitively expensive.
TFR Data: Temporary Flight Restriction (TFR) data is provided by the FAA and
may not be updated outside of normal business hours. Confirm data currency
though alternate sources and contact your local FSS for interpretation of TFR data.
The California Electronic Waste Recycling Act of 2003 requires the recycling of
certain electronics. For more information on the applicability to this product, see
www.erecycle.org.
GPSMAP 496 Owner’s Manual
Getting Started > Unit Overview
Getting Started
Unit Overview
The GPSMAP 496 is an all-in-one, versatile color aviation, automotive, and marine navigator—perfect for air, land, or water. This portable
GPS navigator features a 256-color TFT screen that is easy to read in bright sun, a built-in City Navigator basemap, AOPA Airport Directory,
SafeTaxi Airport Diagrams, Jeppesen aviation database, and auto routing to provide you with automatically generated turn-by-turn directions.
With the included GXM 30A antenna and a subscription to XM WX Satellite Weather, pilots have constant access to NEXRAD radar,
lightning, METARs, TAFs, TFRs, and more. In addition, the GPSMAP 496 offers XM Satellite Radio capabilities, featuring more than
150 digital channels of commercial free music; more than 30 channels of news, sports, talk and entertainment; and more than 20 dedicated
channels of XM Instant Traffic & Weather.
GPS antenna
256-Color TFT screen
with backlighting
Detachable GPS
antenna collapses
for storage. Be sure
the antenna is up
(as shown here) to
receive satellite
signals. Refer to
page 162, for
instructions on
removing the
antenna.
Battery pack. Press tab down to remove battery
pack for replacement, if necessary. See the
“Battery Warnings” section on page vi for more
information about the lithium-ion battery pack.
External power
connector under
weather cap
Backlit keypad for easy nighttime operation
GPSMAP 496 Owner’s Manual
USB/GXM 30/30A connector
under weather cap
Slot for optional
data card
Serial
number
Audio (Headphones/Line out)
connector under weather cap
Getting Started > Charging the GPSMAP 496
Charging the GPSMAP 496
Before using the unit, you need to charge the battery in the
GPSMAP 496. Plug the unit into a 12-Volt connector to charge. You
can use the unit while it is charging.
To charge the unit’s battery:
1. Lift the rubber weather cap to expose the power connector on
the back of the unit. Refer to the image on page 1 for connector
location.
2. Align the notches, and push the plug into the connector until fully
seated.
3. Plug the vehicle power cable into a vehicle power outlet
(cigarette lighter receptacle) if you have a vehicle power cable.
Use care when routing the power cable; be certain that it does
not interfere with vehicle operation.
The unit begins charging as soon as external power is applied.
Placing the unit in Charge Mode charges the unit more quickly than
when the unit is turned on and reduces draw on the aircraft/vehicle/
boat battery.
Information about Charge Mode
Applying external power to the GPSMAP 496 automatically turns
on the unit for full operation. If the battery is present and needs to be
charged, the external power source charges the battery while the unit
is in use.
If you do not want to use the unit, but you would like to charge the
battery, you can put the unit into Charge Mode. Connect the unit to
an external power supply. Press and hold the POWER key. Instead
of completely turning off, the unit now goes into Charge Mode, as
shown below.
Charge Mode
Note: While in Charge Mode, the unit draws a small amount
of current from the aircraft/vehicle/boat battery. To avoid
discharging the vehicle’s battery, disconnect the external power
cable from the GPSMAP 496 when not in use for several days.
After using the unit a lot, you may notice that the lithium-ion battery
in the unit is not holding a charge any more. This is common for
lithium-ion batteries. Contact Garmin or your Garmin dealer to order
a battery pack replacement if you are experiencing charging issues
with your battery.
GPSMAP 496 Owner’s Manual
Getting Started > Turning On the GPSMAP 496
Turning On the GPSMAP 496
The first time you turn on your new GPSMAP 496, the receiver
must collect satellite data and establish its present location. To
ensure proper initialization, the GPSMAP 496 is shipped from the
factory in AutoLocate mode, which allows the receiver to “find
itself” anywhere in the world. Before you turn on the unit to start
initialization, be sure that the antenna is rotated up as shown on
page 1, and it has a clear and unobstructed view of the sky to receive
satellite signals.
To turn the GPSMAP 496 on and off:
1. Press and hold the POWER key. When the unit turns on, a tone
sounds and the Warning Page appears.
3. To turn off the GPSMAP 496, press and hold the POWER key
again.
Adjusting the Backlight and Volume
The POWER key controls the 10 level backlight and volume of
the optional headphone jack or external speaker with vehicle power
cable.
To adjust the backlight level or volume:
1. Press and quickly release the POWER key.
2. Press the ROCKER up to increase the brightness or down to
decrease. Press right to raise the volume or left to lower.
3. Press ENTER or QUIT to close the Backlight/Volume adjustment
window. Press MENU to view the options menu.
Battery time remaining
and power source
indicator
Warning Page
Backlight
adjustment slider
Volume
adjustment slider
2. Read and be sure you understand the warning. Press ENTER to
continue.
GPSMAP 496 Owner’s Manual
Getting Started > Getting Satellite Signals
Getting Satellite Signals
Viewing GPS Status With the GPS Tab
It can take a few minutes to acquire satellites and show your current
location on the map. Be patient as the unit acquires satellite data.
To get signals more quickly, be sure the antenna is raised to the up
position shown in the image on page 1.
As the receiver locks onto satellites, a signal strength bar appears
for each satellite in view, with the appropriate satellite number
underneath each bar. The numbers shown below each bar represent
the particular satellite that is being received. Numbers above 33
indicate WAAS satellites.
After you turn on the GPSMAP 496, the unit automatically begins
searching for satellites. The GPS Page appears while the unit is
gathering satellite signals and acquiring a fix. This process should
take only a few minutes. While the GPSMAP 496 is getting satellite
signals, the GPS Page shows the status as “Acquiring Satellites.”
The GPS tab provides a visual reference of satellite acquisition,
receiver status, and accuracy. The sky view and signal strength bars
give an indication of what satellites are visible to the receiver and
whether they are being tracked.
The sky view shows a birds-eye view of the location of each satellite
relative to the receiver’s last known location. The outer circle
represents the horizon (north up), the inner circle represents 45º
above the horizon, and the center point represents a location directly
overhead. You can also set the sky view to a Track Up configuration,
causing the top of the sky view to align along your current track
heading.
GPS Page
Note: While acquiring satellites, the Map Page can show the
wrong location, such as China. This does not mean your unit
has the wrong data loaded. The GPS receiver needs a few more
minutes to acquire satellites and find your current location.
A power source indicator shows the unit is operating off battery
power (
), that the unit is charging (
), or that an
external power source is in use (
).
GPSMAP 496 Owner’s Manual
Getting Started > Getting Satellite Signals
Receiver
status field
Signal
strength
bars
Sky view
Power
source
indicator
GPS Page
The progress of satellite acquisition is shown in three stages:
• No signal strength bars—the receiver is looking for the
satellites indicated.
• White signal strength bars—the receiver has found the satellite
and is collecting data.
• Green signal strength bars—the receiver has collected the
necessary data from this satellite.
As soon as the GPSMAP 496 has collected the necessary data from
the best satellites in view to calculate a fix, the status field indicates
the status of the receiver. The unit then updates the location, date,
and time.
Receiver Status
The Receiver Status field shows one of the following conditions:
• Searching the Sky—the receiver is looking for satellites.
• AutoLocate—the receiver is looking for any satellite whose
almanac has been collected, which can take up to 5 minutes.
• Acquiring Satellites—the receiver is looking for and collecting
data from satellites visible at its last known or initialized
location, but has not acquired a fix.
• 2D GPS Location—At least three satellites have been acquired
and a two-dimensional location fix has been calculated. “2D
Differential” appears when you are receiving DGPS corrections
in 2D mode and a “D” appears on the strength bar of satellites
being corrected.
• 3D GPS Location—At least four satellites have been
acquired and a three-dimensional fix has been calculated. “3D
Differential” appears when you are receiving DGPS corrections
in 3D mode and a “D” appears on the strength bar of satellites
being corrected.
• Lost Satellite Reception—the receiver is no longer tracking
enough satellites for a 2D or 3D fix.
• Receiver Not Usable—the receiver is unusable, possibly due to
interference or abnormal satellite conditions. Turn the unit off
and back on to reset.
• Simulating GPS—the receiver is in Simulator Mode.
• GPS Off—the GPS receiver is turned off.
GPSMAP 496 Owner’s Manual
Getting Started > Getting Satellite Signals
GPS Tab Options
Press MENU two times to open the Main Menu. Use the ROCKER
to highlight GPS. Press MENU to open the options menu:
GPS Tips
While the receiver is gathering information, your location on the
map can show as different from where you actually are located. Be
patient; as soon as the receiver gathers enough satellite information,
your proper location is shown on the map.
Any time you have traveled more than 600 miles with the GPS
receiver turned off, the receiver can take longer than normal to
initialize and find your location.
GPS Tab Options Menu
Start/Stop Simulator—starts and stops Simulator Mode, which is
helpful when learning how to use your unit.
The GPS receiver can lose satellite signals due to interference from
such items as buildings, tunnels, and heavy tree cover. Monitoring
the GPS status is recommended.
To learn about GPS, see page page 163.
Enable WAAS—enables WAAS capability. Refer to page 164 for
more information about WAAS.
Track/North Up Skyview—orients the sky view page on the GPS
tab to north up or track up.
New Altitude—allows you to manually enter your altitude.
New Location—allows you to enter a new location automatically
or using the map. When in Aviation Mode, you can enter the airport
identifier.
GPSMAP 496 Owner’s Manual
Getting Started > Learning about the Keypad
Learning About the Keypad
PAGE/MODE Key
IN/OUT Keys
• Press to cycle through the main pages in sequence
and return the screen from a submenu page.
•P
ress to zoom in or out on the Map Page.
• Press and hold to switch between Aviation, Marine,
and Automotive Modes.
•P
ress up, down, right or left to move through
lists, highlight fields, on-screen buttons and
icons, enter data, or move the map pointer.
QUIT Key
• Press to cycle through the main pages in reverse
sequence, revert to the previous value in a data
entry field, or cancel a function.
ROCKER Keypad
NRST/FIND Key
ENTER/MARK Key
•S
hows the nearest airports, navaids, points of
communication, and airspace boundaries in
Aviation Mode.
• Press to select a highlighted option, initiate entry,
and then confirm.
•P
ress multiple times in Aviation Mode to show
the Find Menu.
• Press and hold to mark a waypoint.
DIRECT TO Key
MENU/WX Key
•P
ress to start a Go To using airports, navaids,
recently used waypoints, or user-created
waypoints.
• Press to view the Options Menu for the current
page.
• Press twice to show the Main Menu.
• Press and hold to toggle XM WX weather on or off
on the Map Page.
POWER Key
• Press and hold to turn the unit on or off.
•P
ress and hold to show additional information
for the current destination (such as
communication frequency and runway data).
•W
hile in Automotive Mode, press and hold for
more than one second to show the Next Turn
Page and announce the next turn.
• Press and release to adjust the backlighting and
external speaker volume.
GPSMAP 496 Owner’s Manual
Getting Started > Using the GPSMAP 496
Using the GPSMAP 496
This section explains how to enter and select information with the
GPSMAP 496. To switch between Aviation, Marine, and Automotive
Modes, press and hold PAGE. Use the ROCKER to select a mode,
and press ENTER.
Understanding Terms
The GPSMAP 496 unit’s advanced keypad system is designed to
allow quick, convenient selection of navigation options and data
entry. As you progress through this owner’s manual, you are directed
to press a specific key or highlight a field on the screen. When you
are directed to press a key, you should press and quickly release the
key. If the key needs to be held down for a period of time to start a
secondary function, the instructions tell you to do so. When a field is
selected on the screen, it is highlighted in yellow. The location of the
highlight is controlled by the ROCKER.
Field—the location on a page where data or an option can be
entered and shown. Select (highlight) a field using the ROCKER to
begin entering data or selecting options.
On-Screen Button—use the ROCKER to highlight a button and
press ENTER to select the button.
Scroll Bar—when viewing a list of items too long to show on
the screen, a scroll bar appears along the right side of the list.
The location of the scroll bar indicates which portion of the list is
currently shown. To scroll through a list, press up or down on the
ROCKER.
Default—the factory setting saved in the unit’s memory. You can
change the settings as you like, but you can also revert to the factory
(default) settings when you select Restore Defaults.
The following features are referred to throughout this manual:
Highlight—move the highlighted area on the screen up, down, left,
or right with the ROCKER to select individual fields. Moving the
highlight to a given location allows you to make a selection, begin
data entry, or scroll through a list.
Field
On-screen
buttons
GPSMAP 496 Owner’s Manual
Getting Started > Using the GPSMAP 496
Selecting Options and Entering Data
To enter data and select options, you must use the ROCKER to
highlight, select, or choose an item in a list or a field on the screen.
Use the ENTER and ROCKER keys to select options, enter names
and numbers in data fields, and start your selections.
To select and start an option:
1. Press MENU on any page. An options menu appears with a list
of optional features for that page.
2. Use the ROCKER to move the highlight up, down, right, or left on
the menu to your selection.
To exit a menu or return to the previous setting:
1. Press QUIT to move backward through your steps.
2. To return to the starting page, press QUIT repeatedly.
To select and start an on-screen button:
1. On a page with on-screen buttons, use the ROCKER to highlight
the on-screen button you want.
2. Press ENTER.
On-Screen Button
Selecting an option from an options menu.
GPSMAP 496 Owner’s Manual
Getting Started > Using the GPSMAP 496
To enter data in a data field:
1. Use the ROCKER to highlight the data field you want, and press
ENTER to activate the field.
2. Press up or down on the ROCKER to select characters. Press
right to move to the next character or press left to move back
to the previous character. If there are two lines of data, keep
pressing right to drop to the next line.
3. After entering the data, press ENTER.
GPSMAP 496 Databases
Your GPSMAP 496 comes with built-in City Navigator street and
points of interest mapping, AOPA Airport Directory, Jeppesen®
database, Obstacle database, Terrain database, and Voice Guidance
database. You also should update your Jeppesen database to use the
most current data. Refer to page 170 for more information.
MapSource Detailed Maps
Optional Garmin data cards and MapSource CD-ROMs enhance the
versatility of your GPSMAP 496. With optional BlueChart g2 data,
you can access marine navaids, wrecks, obstructions, and anchorage
locations.
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.
Entering Data
Note: To clear the entire data field, highlight the left-most
character field and press left once more on the ROCKER.
For compatible MapSource products, refer to the Garmin Web site at
www.garmin.com/cartography.
Not all fields are programmable. When you are on a page with fields
that are not selectable, the highlight skips over them.
10
GPSMAP 496 Owner’s Manual
Getting Started > Simulated Basic Navigation
Simulator Mode
The GPSMAP 496 contains a Simulator Mode. Simulator Mode is
helpful for practicing with the unit indoors or when no satellite or
XM signals are available or if either antenna is not connected. All
waypoints and routes created in Simulator Mode are retained in
memory for future use. The following section describes how to use
Simulator Mode and walks you through some basic navigation using
the simulator.
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 shown are only simulations
and do not represent the strength of actual satellite signals.
Starting Simulator Mode
To start Simulator Mode using the Setup tab:
1. Press MENU twice to show the Main Menu.
2. Highlight Setup from the vertical menu.
3. Highlight the System sub tab.
4. Select Simulator from the System Mode field.
You can start Simulator Mode from the GPS tab or the Setup tab on
the Main Menu.
To start Simulator Mode using the GPS tab:
1. Press MENU twice to show the Main Menu.
2. Highlight GPS from the vertical menu.
3. Press MENU to open the GPS tab options menu.
4. Highlight Start Simulator, and press ENTER.
Setup tab
System tab
GPSMAP 496 Owner’s Manual11
Getting Started > Simulated Basic Navigation
Entering a New Location
From the GPS options menu you can enter a New Location and
New Altitude to simulate from.
To enter a New Location using the map:
1. Press MENU twice, and highlight GPS from the vertical menu.
2. Press MENU to open the options menu.
3. Highlight New Location, and press ENTER.
4. Highlight Use Map, and press ENTER.
To adjust the simulated speed, heading, and altitude from
the Panel, Pointer, or Highway Pages:
1. Press up on the ROCKER increase the speed in
10 knot/kph/mph increments. Press down on the ROCKER to
decrease the speed in the same increments.
2. Press left or right on the ROCKER to change heading.
3. Press the IN and OUT Zoom keys to increase or decrease
altitude (Aviation Mode only).
5. Use the ROCKER to move the panning arrow to the location on
the map you want, and press ENTER.
You can also select a New Location by entering an airport identifier
(code). Select Use Identifier from the GPS tab options menu. Enter
the airport code using the ROCKER. Refer to page 14 for complete
instructions about entering airport identifiers and user waypoints.
12
GPSMAP 496 Owner’s Manual
Basic Operation In Aviation Mode
Aviation Mode Page Sequence
The GPSMAP 496 offers three usage modes, Aviation Mode (default), Automotive Mode, and Marine Mode. The main pages are linked
together in a series that you can cycle through by pressing PAGE to move forward and QUIT to reverse. Each page also has an options menu
that allows you to customize each page (in all three modes) to your preferences and/or select features that specifically relate to that page. To
view the options menu for any page, press MENU.
Aviation Mode features five main pages: Map Page, Terrain Page, Panel Page, Active Route Page, Position Data Page, and an optional
XM Audio Page. The XM Audio Page must be turned on using the Main Menu (page 114). An example of each page in Aviation Mode
appears below. Each page has a specific use and is discussed later in this manual. Aviation Mode is the default mode for the GPSMAP 496.
This manual first addresses each page, such as the Map Page, as shown in Aviation Mode. The manual then describes the page as shown in
Automotive and Marine Mode.
Map Page
Terrain Page
Panel Page
Active Route Page
Position Data Page
XM Audio
(Optional)
To switch usage modes:
1. Press and hold PAGE/MODE.
2. Use the ROCKER to select either Aviation, Automotive, or Marine, and press ENTER.
GPSMAP 496 Owner’s Manual
13
Aviation
Basic Operation in Aviation Mode > Aviation Mode Page Sequence
Basic Operation in Aviation Mode > Creating a Direct To
Aviation
Creating a Direct To
In Aviation Mode, press Direct To
to select a destination. When
a Go To or route is currently in use, holding Direct To
down
briefly shows a detailed information page for the current destination.
In Marine or Automotive Mode, pressing Direct To
shows the
Navigate menu, which allows you to start navigation or edit a route.
Also, in Marine Mode, pressing Direct To
twice creates a MOB
waypoint and starts navigating to that point.
Press MENU on any tab of the Go To Page to open an options menu
for that tab. Based on the tab you selected, you can Show Details,
Select Approach, Select Route, Find Land Points, and Remove
Point.
Airport
identifier
To go to an airport or navaid:
1. Press Direct To
to show the Go To Page. Use the ROCKER
to show the Aviation tab.
2. Press up or down on the ROCKER to select the identifier, facility
name, or city field, and press ENTER.
3. Use the ROCKER to enter the word to search for. Press up and
down to change the highlighted character. Press right to move to
the next character field. As you scroll through the characters the
GPSMAP 496 shows database entries with the same characters
you have entered to that point. If more than one entry exists in
the database for the characters you have entered, a window
appears. Use ENTER and the ROCKER to select the point.
4. Press ENTER when the point is shown.
5. With the on-screen Go To button highlighted, press ENTER. The
GPSMAP 496 creates a course from your present location to the
selected destination.
Facility
name
City
Go To Page: Aviation Tab
14
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Creating a Direct To
Go To Page: Recent Tab
2. Use the ROCKER to highlight the point from the list, and press
ENTER.
From the User tab, you can also select the top waypoint name
line and then spell out the waypoint name using the ENTER and
the ROCKER keys.
3. Highlight the on-screen Go To button, and press ENTER. A
course is plotted from your present location to the selected
destination.
Viewing Details for the Destination
The Show Details option shows detailed information for your
destination waypoint or the next waypoint in a route. This feature
is handy for retrieving airport information, such as communication
frequencies and runway information. You can view details by using
the options menu or by selecting the Show Details button on the Go
To Page, and pressing ENTER.
To view the details for the selected destination:
1. Press MENU to open the options menu. Use the ROCKER to
highlight Show Details, and press Enter.
OR
Press and hold Direct To
.
OR
Use the ROCKER to highlight Show Details, and press ENTER.
A new screen appears showing sub tabs along the top of the
screen.
2. Use the ROCKER to select the tab to view the information.
GPSMAP 496 Owner’s Manual15
Aviation
To go to a recently-used or user-created waypoint:
1. Press Direct To
to show the Go To Page. Use the ROCKER
to select the Recent or User tab.
Basic Operation in Aviation Mode > Creating a Direct To
Viewing Frequency Restrictions
Aviation
The Comm tab on the Airport Details Page provides a list of
communication frequencies for that airport. Some frequencies are
noted with an asterisk (*), which indicates that the frequency has
usage restrictions. You can show the usage restriction information on
your GPSMAP 496.
Airport Tab of Details Page
3. Highlight Show Map, and press Enter to view the item on the
map. Press Quit when done. Highlight OK, and press Enter to
return to the Go To Page.
To view usage restrictions for a communication frequency:
1. With the Comm tab selected, use the ROCKER to highlight any
frequency with usage restrictions (noted with an asterisk), and
press ENTER. A Usage Restrictions Page appears describing the
restrictions for the selected frequency.
When viewing information for the Runway or Approach tabs, use
the ROCKER to highlight the runway designation or approach
name, and press ENTER. Then press up or down on the ROCKER
to scroll through available runways and approaches. Press ENTER
to select the runway or approach for which you would like to view
additional information.
Usage Restrictions Page
2. To return to the Comm Information Page, press ENTER.
16
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Viewing AOPA Airport Directory Information and SafeTaxi Diagrams
The AOPA Airport Directory contains airport statistics such as
pattern altitudes, noise abatement information, FBO phone numbers,
hours of operation, local attractions, ground transportation, lodging,
and services.
To view the AOPA Airport Directory information:
1. Select an airport using the map or the NRST/FIND key.
2. Use the ROCKER to select the AOPA tab.
3. Press up and down on the ROCKER to scroll through the AOPA
Directory listings.
Viewing SafeTaxiTM Diagrams
Garmin SafeTaxi diagrams provide detailed taxiway diagrams and
position information on more than 650 airports in the USA. Taxi
diagrams are integrated in the Map Page.
To view a SafeTaxi diagram:
1. Zoom in on an airport that has a taxi diagram available.
2. Use the ROCKER to view items on the taxi diagram.
SafeTaxi Airport Diagram
AOPA Airport Directory Tab
AOPA Service Icon Legend
GPSMAP 496 Owner’s Manual17
Aviation
Viewing AOPA Airport Directory Information
Basic Operation in Aviation Mode > Finding a Nearby Point
Aviation
Finding a Nearby Point
In Aviation Mode, press NRST/FIND to open the Nearest Pages.
These pages provide detailed information on the nearest airports,
airport weather sources, navaids, cities, and user waypoints.
In Marine and Automotive Modes, press NRST/FIND to open the
Find Menu. You can easily search waypoints, cities, exits, and tide
stations using the Find Menu.
Aviation Nearest Categories
In Aviation Mode, the Nearest Pages contain the following
information:
Airport—nearest 15; identifier, bearing, distance, length of the
longest runway, and common traffic advisory (CTAF) or tower
frequency.
Wx (Airport Weather Sources)—nearest 15; airport weather
sources including AWOS, ASOS, ATIS, and current METAR data.
VOR (VHF Omnidirectional Radio Beacons)—nearest 15;
identifier, facility type (symbol), bearing, distance, and frequency.
NDB (Non Directional Beacons)—nearest 15; identifier, facility
type (symbol), bearing, distance, and frequency.
INT (Intersection)—nearest 15; identifier, bearing, and distance.
Nearest Page: Airport Tab
While in Aviation Mode
Press MENU when the Nearest Page is open to show the Nearest
Page options menu. You can Show Arrows (or Show Bearing) and
Set Airport Criteria.
User (Waypoints)—nearest 15; name, bearing, and distance.
City—nearest 15; name, bearing, and distance.
ARTCC (Air Route Traffic Control Center)—nearest 5; bearing,
distance, and frequency.
FSS (Flight Service Station)—nearest 5; bearing, distance,
frequency, and VOR (for duplex operations).
Airspace—up to 15 (based on number of alerts provided); name,
18
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Finding a Nearby Point
Selecting a Nearby Point as Your Destination
In an emergency, you can press a few keys to have the GPSMAP 496
guide you to the closest point to land.
To select a nearby point as your destination:
1. Press Nrst.
2. Use the ROCKER to select the sub tab along the top of the page.
3. Highlight the point using the ROCKER.
4. Press Direct To
. The Go To Page opens for the selected
point.
OR
You can press Enter to show the Information Page (Details
Page).
5. Press Enter when Go To is highlighted.
To select the nearest airport as your destination:
1. Press NRST twice to show the Airport tab and highlight the
nearest airport.
2. Press ENTER to view airport information.
3. Verify the Go To button is highlighted, and press ENTER.
Viewing Details for a Nearby Point
To view details for a nearby point:
1. Press Nrst to show the nearest pages. Select the sub tab.
2. Use the ROCKER to highlight the item on the list and press
Enter. The corresponding information page appears.
Information Page for a VOR
On airport information pages, use the ROCKER to select the sub
tabs across the top of the information pages and show the airport
data.
3. Press Quit to return to the Nearest Pages. You can also
highlight any one of the on-screen buttons to perform that action,
such as Show Map or Go To.
GPSMAP 496 Owner’s Manual19
Aviation
time to entry (when applicable), and status.
Basic Operation in Aviation Mode > Finding a Nearby Point
Viewing Communication Frequencies
Aviation
The Nearest Pages list up to five nearest flight service station
(FSS) and air route traffic control center (ARTCC) points of
communication. The closest communication point is shown first,
with additional points available when selected. For duplex operation,
the corresponding VOR is listed (by identifier) and the transmit and
receive frequencies are denoted by a TX and RX respectively.
To view additional communication frequencies:
1. Press NRST to open the Nearest Pages.
2. Use the ROCKER to select the ARTCC or FSS sub tab.
3. Press the ROCKER down to highlight Center or Station (based
on which tab you are on), and press Enter.
4. Select the numbered item that you want from the list, and press
Enter to show the communication information. The lowest
numbers on the list are the closest communication points.
Viewing Airspace Alert Information
When an airspace alert appears, press NRST to automatically show
nearby airspace information in the Airspace tab. This information
includes name, time to entry (if applicable), and status. Normally,
only one or two airspace alerts occur at a time, but with sectorized
controlled airspace, such as many Class B areas, there are more.
Status information can appear as follows:
Ahead—your projected course takes you inside an airspace within
the next 10 minutes or less.
Near—you are within two nautical miles of an airspace but not
projected to enter it.
Near & Ahead—you are within two nautical miles of an airspace
and your current course takes you inside the airspace.
Inside Airspace—you are within the boundaries of the airspace.
ARTCC Tab
20
GPSMAP 496 Owner’s Manual
Viewing Additional Airspace Information
From the Nearest Pages, you can show additional airspace
information, such as floor and ceiling limits or communication
frequencies.
To view additional airspace information:
1. When an airspace alert appears, press Nrst to show the
Nearest Pages and the airspace information. If you are already
viewing the Nearest Pages, use the ROCKER to select the
Airspace tab.
2. Use the ROCKER to select the airspace alert entry on the page,
and press Enter. An information page opens to show the
controlling agency, status, and floor/ceiling limits.
3. To show a communication frequency for the airspace, select the
Frequencies button, and press Enter.
To return to the Nearest Pages, select the OK button, and press
Enter.
Note: When an airspace alert appears, press NRST to
automatically show nearest airspace information. Press NRST
a second time to quickly show the nearest airports list. Press
NRST a third time to show the Find Menu.
Nearest Pages: Airspace Tab
GPSMAP 496 Owner’s Manual
21
Aviation
Basic Operation in Aviation Mode > Finding a Nearby Point
Basic Operation in Aviation Mode > Finding a Nearby Point
Setting Airport Criteria
Aviation
From the Nearest Airport tab, an options window allows you to
filter out airports that do not meet a defined criteria. This allows you
to only show airports with a surface type and runway length you
want. You can also select the Include Private Airports and Include
Heliports check boxes to include private airports and heliports in
the Nearest Airport tab.
3. Select Set Airport Criteria, and then press Enter. A window
appears with the current settings for runway surface and
minimum runway length.
Runway Surface—allows you to set criteria for the type of surface
on the runway:
• Any—shows any runway, regardless of surface type, including
water landing facilities.
• Hard Only—shows only runways with a concrete, asphalt, or
similar sealed surface.
• Hard or Soft—shows all runways except water landing facilities.
• Water Only—shows only water landing facilities.
Minimum Runway Length—allows you to enter a specific length
for the shortest runway allowed.
To enter airport criteria:
1. Press Nrst, and open the Airport tab.
2. Press Menu to show the options menu.
22
Airport Criteria Page
4. With the runway surface field highlighted, press Enter. Select
the surface type, and press Enter.
5. Highlight the minimum runway length field, and press Enter.
6. Use the ROCKER to enter the minimum acceptable runway
length. Press Enter.
Note: Use caution when changing the nearest airport criteria.
In an emergency, a short runway is still typically preferable to an
off-field landing. If you set the runway length too low or exclude
many runway surfaces, you may not be alerted to a nearby
airport that otherwise would be listed.
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Selecting an Approach
Caution: The approaches provided in the Jeppesen database
are for monitoring purposes only. The GPSMAP 496 is not an
IFR-approved instrument and should not be used as a primary
source of navigation guidance in instrument conditions.
When you select an approach, it replaces the destination airport with
the sequence of waypoints for the selected approach. Keep in mind
that the airport must have a published approach (GPS, RNAV, VOR,
NDB, localizer, or ILS) and only the final course segment (usually
from final approach fix to missed approach point) of the published
approach is available in the GPSMAP 496.
To select an approach for the destination airport:
1. Press Direct To
to show the Go To Page. Select the
destination you want to travel to.
2. Press Menu to open the options menu. Highlight Select
Approach, and press Enter.
3. Use the ROCKER to select the approach from the window, and
press Enter. A Vectors? window appears. See the following
page for more information on vectors.
Aviation
Selecting an Approach
Note: When using a route, the selected approach for the
destination airport overrides your current route. The original
route is saved in the Route tab.
You can select an approach several ways:
• Press Direct To
and press Menu on the Go To Page, as
described in the steps to the right.
• From the Active Go To (or Active Route) Page, press Menu.
• From the Airport Details Page, select the Approach tab.
GPSMAP 496 Owner’s Manual
Selecting an Approach
4. Use the ROCKER to select Yes or No, and press Enter. The
GPSMAP 496 removes the destination airport from the Go To
and replaces it with the approach waypoints.
23
Basic Operation in Aviation Mode > Selecting an Approach
Understanding Vectors
Aviation
The Vectors? option, which appears after you select an approach,
determines how you navigate to the final approach waypoint.
If you select Yes, the GPSMAP 496 creates an extension of the final
course, beyond the final approach waypoint in the database (final
approach fix [FAF]). On the Active Route Page, a Vector to Final
symbol appears beside the first approach waypoint.
If No is selected for the Vectors? option, the GPSMAP 496 creates
a straight-line course directly to the first waypoint in the approach
(from wherever you are when you initiate the approach). This works
much like any other route with course guidance from point to point.
A turn usually required as you cross each waypoint.
Caution: Steep Turns are not allowed on an IFR (Instrument
Flight Rules) approach. Follow the approach plate or air traffic
control instructions to complete the approach without a steep
turn.
If air traffic control clears your approach to an airport, loading the
approach cancels your Direct To and initiates a route to the FAF.
Load the approach only when cleared by air traffic control.
Active Approach Page
Using vectors in the approach
The GPSMAP 496 provides no guidance to the inbound course.
The course deviation needle on the graphic HSI remains off-center
until you are established on this final approach course. The HSI
automatically slews (rotates to show the direction) to the inbound
course. The Map Page shows an extension of the final approach
course using a bold magenta line.
24
To cancel the vectors and/or approach:
1. Press Direct To
, and press Menu on the Go To Page.
OR
From the Active Go To (or Active Route) Page, press Menu.
2. Highlight Cancel Approach, and press Enter to cancel
the entire approach. If you enabled Vectors, highlight Cancel
Vectors, and press Enter to navigate directly to the FAF.
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Finding Points on Land
Finding Points on Land
To Find Land Points:
1. Press Direct To
to show the Go To Page.
2. Press Menu to open the options menu.
Go To Page Options Menu
Aviation
To take full advantage of the trip-planning capabilities of the
GPSMAP 496, you can find points on the land and then create a
turn-by-turn route (auto-route) to that point. For example, you can
find a restaurant to eat dinner at when you land.
Find Menu
4. Press Menu to select the search method. For example, if you
want to find a land point near you destination, select Near
Destination, and press Enter.
5. Highlight the find menu icon for the category, and press Enter.
6. Enter the necessary information, such as the restaurant name
and press enter. Refer to page 58 for complete information.
7. Select Save to save the location as a waypoint to use later when
creating a route. Select Show Map to show the location on the
map, or select OK to return to the search results list.
3. Highlight Find Land Points, and press Enter. The Find Menu
opens.
GPSMAP 496 Owner’s Manual
25
Basic Operation in Aviation Mode > Marking a Waypoint
Aviation
Marking a Waypoint
Waypoints are locations or landmarks you record and store in your
GPSMAP 496. Press the Enter/Mark to capture your present
location to create a new waypoint. You must have a valid 2D or 3D
satellite fix to mark your location. Press Menu twice and open the
GPS tab to view your satellite receiver status.
To mark a selected location as a waypoint:
1. Press Page to open the Map Page.
2. Use the ROCKER to move the arrow to the location you want to
save as a waypoint.
3. Quickly press and release Enter/Mark to open the
Information Page for the map item.
For more information about editing waypoints, see the “Editing and
Managing Waypoints” section beginning on page 78.
To mark your present location:
1. Press and hold Enter/Mark until the Mark Waypoint Page
appears.
2. To accept the waypoint with the default name (“Waypoint”), use
the ROCKER to highlight OK, and press Enter.
Saving the Selected Item as a Waypoint
4. To save the waypoint, use the ROCKER to highlight Save, and
press Enter.
5. To accept the waypoint with the default name, highlight OK, and
press Enter.
26
GPSMAP 496 Owner’s Manual
Basic Operation in Aviation Mode > Creating a Flight Plan (Route)
You can create a Flight Plan (or route) using the Route Page in the
Main Menu. The Route is then saved for future use. You can also
create a route using the Active Route Page for immediate use. For
more information, refer to “Creating Routes” beginning on page 61
and “Editing and Managing Routes” beginning on page 74.
Note: After you perform an update to your Jeppesen Database,
verify that all of your flight plans in your unit are still current.
If there is an obsolete Jeppesen aviation point in a saved route,
the route is locked and unusable. You need to create a new route
with current Jeppesen database points.
To create a route:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to highlight Routes, and press Enter.
3. Press Menu to show the options menu. Use the ROCKER to
highlight New Route, and press Enter, or highlight the first
blank line, and press Enter.
4. Press Menu to show the options menu. Use the ROCKER to
highlight Add Waypoint, and press Enter.
OR
Highlight the first blank line, and press Enter.
5. The Aviation Find Page (Go To Page) opens allowing you to
select an aviation point. Enter the ID, Facility name, or city.
GPSMAP 496 Owner’s Manual
6. Highlight the point in the list. Highlight OK, and press Enter.
The selected point is added to the route.
Aviation
Creating a Flight Plan (Route)
Highlight a
blank line
and press
ENTER to
continue adding
waypoints.
7. Continue steps 4 through 6 until all points are added to the route.
The route is automatically saved to the unit’s memory.
To navigate a saved route:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to highlight Routes, and press Enter.
3. Highlight the route you want to take from the list, and press
Menu.
4. Highlight Activate Route, and press Enter.
You can also create a flight plan to use at a later time. For more
information, refer to “Creating Routes” beginning on page 61 and
“Editing and Managing Routes” beginning on page 74.
27
Basic Operation in Aviation Mode > Following your Flight Plan
Aviation
Following your Flight Plan
When you have created and started your flight plan (or route), the
GPSMAP 496 guides you to the destination using a variety of tools.
Note: After you perform an update to your Jeppesen database,
verify that all of your flight plans (routes) in your unit are still
current. If there is an obsolete Jeppesen aviation point in a saved
route, the route is locked and unusable. You need to create a new
route with current Jeppesen database points.
Track Your Progress on the Map Page
On the Map Page, your current location is shown as an airplane
(when in Aviation Mode). You can see how the airplane moves
across the map; this is a graphic view of your flight. Your route is
marked with a magenta line. The airplane should be on top of the
magenta line as you move. When you are on the magenta line, you
are directly on course. For complete information about the Map
Page and the features of the Map Page, see pages 29–36.
28
Note: In Aviation (and Marine) Mode, the Go To line and
navigation guidance are fixed. The From point is the location
where the Go To was initiated. In Automotive Mode, the Go To
line on the map is constantly updated to your present location.
Terrain and Obstacle Changes
Press Page to open the Terrain Page, and watch the changes in the
terrain and the obstacles you are flying over with the Terrain Page.
Terrain and obstacles that are less than 100 feet from your aircraft
are shown in red. For complete information, see page 37.
View the HSI on the Panel Page
You can use the Panel Page to view the HSI, your bearing to the
course, and other information such as speed, altitude, and ETA. Use
the compass in the center of the page to determine if you are on the
proper course. Also, you can help keep the aircraft within the VNAV
profile when viewing the VNAV indicator. For complete information
about the Panel Page, see pages 40–43.
Alerts
As you travel, a variety of alerts appear on your current page, such
as Airspace, Terrain, Obstacle, and Descent Rate Alerts. When
an Airspace Alert pops up, press NRST to view the Airspace
Information. When a Terrain or Obstacle alert pops up, press PAGE
or NRST to open the Terrain Page. From here you can view any
terrain and obstacles that might become a problem to you. Possible
points-of-impact are shown as Xs. Adjust your altitude to avoid the
obstacles and terrain.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages
This section discusses the major pages, such as the Map and Terrain
Pages, as well as some additional aviation features, such as E6B.
Map Page
The GPSMAP 496 features a real-time moving map that can do
much more than just plot your course. The Map Page shows map
information (digital cartography) that includes airspace boundaries,
airports, navaids, lakes, rivers, coastlines, cities, and highways.
Dedicated zoom keys (In and Out) are provided for range
adjustments.
Two basic map operating modes, location mode and pan mode,
determine what cartography is shown on the Map Page. Location
mode pans the map to keep your present location in the screen area.
The location marker (icon) that shows your travel on the Map Page
is an aircraft symbol
in Aviation Mode and a triangle symbol
in Marine and Automotive modes. The GPSMAP 496 always
turns on in location mode, with the last known location centered on
the map. When you press the ROCKER, the GPSMAP 496 enters
pan mode, which moves the map to keep the white arrow (map
pointer) within the screen area.
GPSMAP 496 Owner’s Manual
In Aviation Mode, by default, four user-selectable data fields appear
in the corners of the screen that can be configured to show any one
of the several data options. You can also change the layout of the
map and data fields. See page 34 for information.
Compass Arc
Data field
Airports
Map
zoom range
Current
location
Map Page (Aviation Mode)
A navigation arc (Horizontal Situation Indicator, or HSI) appears
by default on the Map Page. The arc works like the compass on the
Panel Page, indicating the course and your deviation left or right of
this course. If the route line and magenta arrow are heading straight
up, you are heading directly to your destination.
Note: The navigation arc only shows up in Aviation Mode
when the Map Page is set to Track Up. See page 34.
29
Aviation
Aviation Mode Pages > Map Page
Aviation Mode Pages > Map Page
Map Orientation
Aviation
There are three map orientation options: North Up orients the map
like a paper map, Track Up orients the map in the direction of travel,
and Course Up orients the map in the direction of the destination.
When using Track Up or Course Up, the North arrow indicates the
orientation. To change the map orientation, press PAGE to open the
Map Page. Press Menu. Select Set up Map, and press Enter.
Refer to page 34 for information.
Selecting Map Ranges
The Map Page has 28 available range scales from 20 ft to 800 nm
(20 ft to 800 mi or 5 m to 1200 km). The map range is controlled by
the In and Out keys, with the current range shown at the bottom
right of the data window.
Note: The range value represents the distance between the
ends of the range bar (
).
To select a map zoom range (zoom in and out):
• Press the Out key to zoom out.
• Press the In key to zoom in.
Map coverage conforms to the following conditions:
• Cartography is shown when the selected zoom range is covered
by either the internal map data or other MapSource data loaded
onto a data card.
• When the selected zoom range is covered by both the internal
map data and data card map information, the cartography with
the best resolution is shown.
• When the selected zoom range exceeds the resolution of the data
in use, “overzoom” appears below the map range detail of the
built-in City Navigator map data.
Using the built-in City Navigator maps.
• When internal City Navigator map data is used, “detail map”
appears below the map range.
Using the built-in City Navigator maps.
The system has a built-in City Navigator street mapping data.
Detailed marine chart coverage is available through the use of the
BlueChart, or MapSource software.
30
GPSMAP 496 Owner’s Manual
Panning the Map
The panning arrow allows you to pan the map to show other map
areas. As you pan past the edge of the current map, the screen moves
to provide continuous map coverage.
To pan the map:
Press up, down, right, or left on the ROCKER. The panning
arrow moves the map so you can view different parts of the map.
AOPA Airport
Directory
service icons
Map feature
highlighted
Panning the Map
To re-center your location on-screen:
1. When you are finished panning the Map, press Quit.
2. The map automatically moves to show your present location, and
the unit returns to location mode.
The arrow can also be used to select on-screen map items, allowing
Panning Arrow
you to review a selected item directly from the map screen.
data window:
Shows the distance
and bearing from To view details about an on-screen point:
1. Use the ROCKER to move the arrow to the waypoint or map item
your present
you want. If there are several items grouped closely together,
location, feature’s
zoom in closer for a better view.
elevation, time to
the feature, and When a waypoint or map item is selected, it is highlighted on
arrow’s location
screen with the name and location shown at the top of the
coordinates.
screen, along with the distance and bearing from your current
AOPA Service Icon Legend
As you move the arrow, the distance and bearing from your present
location to the arrow is shown in the data window, along with the
arrow’s location coordinates. When you zoom in pan mode, the
GPSMAP 496 Owner’s Manual
arrow stays centered on the screen. When the arrow is stationary,
fixed coordinates appear in the location field, and the distance and
bearing from your present location update as you move.
location, as shown in the image to the left.
2. Press Enter to view more information about the point. The
information and on-screen buttons shown vary based on the
type of item selected. In some cases, additional information tabs
appear at the top of the Information Page or Waypoint Page.
3. Use the ROCKER to highlight the extra tabs and view the
information.
4. Select an on-screen button, and press Enter.
5. Press Quit to exit the Information Page.
31
Aviation
Aviation Mode Pages > Map Page
Aviation Mode Pages > Map Page
Airspace Information
Aviation
Pan mode can also be used to retrieve information on airspaces
depicted on the map.
Highlighted
airspace area
Information box
with airspace
name, type,
and floor/ceiling
limits
Airport Information Page
Smart Airspace
Smart Airspace shows airspace at and immediately surrounding your
current altitude in bold. Airspaces at all other altitudes are de-emphasized.
Smart Airspace on the Map Page
32
Airspace Information
To retrieve airspace information from the Map Page:
1. Use the ROCKER to select an area within the airspace boundary.
The boundary line is highlighted and the airspace type and floor/
ceiling limits are shown.
2. To show additional information, press Enter.
View communication frequencies by highlighting the
on-screen Frequencies button, and pressing Enter.
3. To return the to Map Page, highlight OK, and press Enter.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > Map Page
You can remove items from the map (declutter the screen) to remove
unwanted items, such as highways. Aviation Mode has various
levels of declutter.
To quickly declutter the map, press Enter. You can also declutter
the map on the Terrain Page.
To declutter the Map Page:
1. From the Map Page, press Enter. Clear-1 appears under the
map range. The background map detail—including highways,
cities, rivers & smaller lakes—is removed from the map.
2. Press Enter again. Airspace boundary detail is removed from
the map. Clear-2 appears below the map range.
3. Press Enter again. Only the waypoints and navaids that are
part of the current Go To or route appear on the map. Clear-3
appears below the map range.
4. In Aviation Mode, press Enter again to return ALL detail to the
map.
In Marine and Automotive Modes, press Menu, highlight
Declutter On or Declutter Off, and press Enter.
GPSMAP 496 Owner’s Manual
Measuring Distance
You can measure the distance and bearing between two map items.
To measure the bearing/distance between two points:
1. From the Map Page, press Menu to open the options menu.
2. Highlight the Measure Distance option, and press Enter. An
on-screen arrow appears on the map at your present location
with ENT REF below it.
3. Move the arrow to the reference point (the starting point that you
want to measure from), and press Enter. A push-pin icon marks
the starting point on the map.
End point of
measurement,
labeled “ENT
REF”
Push pin
indicating the
beginning
point of the
measurement
Measure Distance
4. Move the arrow to the point want to measure to. The bearing and
distance from the reference point and arrow coordinates appear
in the data window at the top of the screen.
5. Press Quit to finish.
33
Aviation
Clearing Unwanted Details from the Map
Aviation Mode Pages > Map Page
Aviation
Setting the Bug Indicator
Setting Up the Map Page
To set the Bug Indicator:
1. From the Map Page, press Menu to open the options menu.
2. Use the ROCKER to highlight Set Bug Indicator and press
Enter.
3. A list of Bug Indicator options appears. By default, the bug
indicator shows Bearing (BRG) to waypoint, but can also show
the Course to Steer (CTS) or can be User Selected. The User
Selected option allows you to mark a heading reference on the
graphic HSI. This provides a visual cue of an important heading
for current or future use. You can also turn the Bug Indicator off
here.
4. Highlight the option from the list, and press Enter.
To change a map setup option:
1. From the Map Page, press Menu to open the options menu.
2. Highlight Set up Map, and press Enter.
3. Press left or right on the ROCKER to highlight the tab, then up
or down on the ROCKER to highlight to the field you want to
change, and press Enter.
You can set a bug indicator to show bearing or course to steer. You
can also enter a specific heading reference for the indicator.
You can also set the Bug Indicator on the HSI shown on the Panel
Page. Open the Panel Page and press Menu. Follow steps 2
through 4 above.
The Map Page Setup allows you to adjust the way items appear on
the Map Page.
General Tab of the Map Page Setup
4. Press up or down on the ROCKER to highlight to the setting, and
press Enter to select the new setting.
5. Press page or Quit to exit.
34
GPSMAP 496 Owner’s Manual
Changing the Page Layout and Data Fields
To customize the pages to show what you want, adjust the page
layout and data fields.
You can adjust how the following pages look on the screen: Map,
Terrain, Panel, Compass, Highway, Location Data, Trip Computer,
and optional Sonar Page. You can adjust the data fields on many of
these pages as well.
To set up the page layout:
1. Press Page to show the page you want to change.
2. Press Menu to open the options menu.
3. Highlight Set up Page Layout, and press Enter.
Changing the layout of the Map Page
To change a data field:
1. Press Page to show the page you want to change.
2. Press Menu to open the options menu.
3. Highlight Change Data Fields, and press Enter
4. Move the field highlight to the data field you want to change, and
press Enter.
5. Press up or down on the ROCKER to highlight the data you want
to show, and press Enter.
6. To return the field to the default setting, press Menu and then
Enter.
7. Press Quit to exit.
Changing a Data Field
4. Select the option you want, and press Enter. The options vary
between the three usage modes and the page you are setting up.
GPSMAP 496 Owner’s Manual
35
Aviation
Aviation Mode Pages > Map Page
Aviation Mode Pages > Map Page
Additional Map Data
Aviation
You can view the data that is currently loaded on your GPSMAP 496
unit and data card.
To review or change data card information:
1. Access the Map Page, and press Menu.
2. From the options menu, highlight Map Information, and press
Enter.
Map Family
highlighted.
Press ENTER
to view the
individual maps
in the family.
Map Card Information Page
36
3. The first page shows the Map Families that are stored on the
data card and whether they are shown on the Map Page.
To change the setting for a Map Family, highlight the box next to
the Map Family name, and press Enter to select (check mark)
or deselect (no check mark) the Show setting.
4. To view the list of maps within a Map Family, highlight the name
of the Map Family, and press Enter.
5. To view detailed information about an individual map, highlight
the Map Name, and press Enter. Highlight OK, and press
Enter to exit the map information page.
6. To select or deselect individual maps, highlight the box next to a
map, and press Enter to check or uncheck the Show box.
OR
Press Menu, and select one of the options (Show All, Hide All,
or Show Defaults), and press Enter.
7. Press Quit to exit the Map Information Page.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > Terrain Page
The Terrain Page, available only in Aviation Mode, provides an
overhead view of the terrain and obstacles beneath you. Alert
windows appear on all pages to inform you of your proximity to the
terrain and obstacles, as well as an unsafe descent rate. These alerts
depend on user-defined parameters in the Terrain setup.
Red Terrain
area: terrain
within 100 feet
of aircraft
Yellow Terrain
area: terrain
between 100
and 1000 feet of
the aircraft
Elevation
Scale
Lighted
obstacle
Terrain Page
Terrain Information
Unlighted
obstacle
The areas of the terrain shaded red are predicted to be within
100 feet below or above the aircraft. The yellow terrain areas are
between the user-defined Caution Elevation and 100 feet below the
aircraft. By default, the Caution Elevation is 1,000 feet; therefore,
the areas in yellow are between 1,000 feet and 100 feet below the
aircraft. The black areas are further than the Caution Elevation. A
projected point of impact is marked with an “X” symbol.
GPSMAP 496 Owner’s Manual
Obstacle Information
Obstacles are shown on the Terrain Page at or below the map range
of 12 nm. Obstacles are also shown on the Map Page when the map
range is set to 3 nm or below.
Standard aeronautical chart symbols are used for lighted or unlighted
obstacles taller than 200 feet Above Ground Level (AGL). Refer to
the Obstacle Icons legend below.
Lighted Obstacle 1000 ft AGL and higher.
Unlighted Obstacle 1000 ft AGL and higher.
Lighted Obstacle below 1000 ft AGL.
Unlighted Obstacle below 1000 ft AGL.
Obstacle Icons
Each obstacle is labeled with the altitude of the top of the obstacle,
or Mean Sea Level (MSL). Each obstacle also lists, in parentheses,
the actual height of the obstacle, or Above Ground Level (AGL).
Terrain and Obstacle Color Code
Red—terrain or obstacle is within 100 feet of the aircraft.
Yellow—terrain or obstacle is between the user-defined Caution
Elevation and 100 feet below the aircraft.
37
Aviation
Terrain Page
Aviation Mode Pages > Terrain Page
Alerts
Aviation
If you are on another page of the GPSMAP 496 unit, Terrain,
Obstacle, and Descent Rate Alerts show in the lower-left corner to
inform you of the situation. The alert remains on the screen until
the flight path has cleared the obstacle or terrain, or until you press
Quit.
Additional Terrain Page Options
Access the Terrain Page options menu by pressing Menu while
you are on the Terrain Page.
Terrain Page Options Menu
Obstacle Warning
Shown on the Panel Page
38
• Press Enter to quickly declutter the map, just as you would on
the Map Page. See page 33.
• To quickly disable alerts, highlight Disable Alerts and press
Enter. Repeat to enable alerts again.
• You can pan the map and zoom in and out using the same
techniques you use on the Map Page. See page 30.
• You can change the layout of the Terrain Page. Refer to
page 37. Also, refer to page 174, for information about the data
fields.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > Terrain Page
Use the Terrain Setup Page to set levels for terrain alerts as well as
obstacles in or near your flight path.
Caution Elevation
Select the Caution Elevation. If the terrain or an obstacle is within
the Caution Elevation you entered, the GPSMAP 496 provides an
alert.
Look Ahead Time
The Look Ahead Time for Terrain and Obstacle Alerts determines
the time when an alert annunciation occurs. For example, if
120 seconds is selected, the GPSMAP 496 provides an alert up to
120 seconds before you reach the terrain or obstacle.
Alert Sensitivity
The three Alert Sensitivity settings (Terrain, Obstacle, and
Descent Rate) determines what level of alerts are annunciated. The
GPSMAP 496 defaults to High sensitivity, which annunciates all
red and yellow alerts at the time set in Look Ahead Time. Medium
sensitivity annunciates all of the red and the highest priority of
yellow alerts, and Low only annunciates red alerts.
GPSMAP 496 Owner’s Manual
To set up the Terrain Page:
1. On the Terrain Page, press Menu to access the Terrain Page
options menu.
2. Select Set up Terrain, and press Enter.
Aviation
Setting Up the Terrain Page and Alerts
Terrain Setup Page
3. Make the adjustments to the Terrain Setup Use the ROCKER to
select options, and press Enter. Select an option, and press
Enter.
4. Press page or Quit to accept the changes and exit the Set up
Terrain Page.
39
Aviation Mode Pages > Panel Page
Aviation
Panel Page
The Panel Page shows GPS-derived data in a graphical format,
similar to an instrument panel. Keep in mind the differences between
this page and your mechanical instruments, as your mechanical
panel instruments use sensors that provide information different
from that derived using GPS. The Panel Page appears only when the
GPSMAP 496 is in Aviation Mode.
The Panel Page shows a graphic Horizontal Situation Indicator
(HSI) surrounded by additional indicators.
Next waypoint
and distance
to it
HSI showing
Course
Deviation
Indicator (CDI)
Ground speed
Altitude
Turn rate
indicator
Estimated
time enroute
40
Vertical speed
Panel Page
CDI scale
The graphic HSI depicts the course to the destination or the next
waypoint in a route, current ground track, off course error, and a
To/From indication. The rotating compass indicates your current
ground track at the top of the page.
The course pointer and course deviation needle indicate the course
and whether you are on the course. A bug indicator provides
information to guide you back to the course if you stray off course.
If you move off course, the Course Deviation Indicator, or needle,
indicates how far off course you are, left or right, based on its
placement along the course deviation scale. To get back on course
and center the needle, steer toward the needle.
The course deviation scale setting is adjustable for Auto, ±0.25, 1.25
or 5.0 (nautical mile, statute mile, or kilometer) full-scale deflection.
The course deviation scale appears on the lower right corner of
the HSI. The default setting is Auto, which uses three factors to
determine the distance from the center of the CDI to full left or right
limits:
• When you are within 30 nm of any airport in the active route,
Auto sets the CDI scale at 1.25.
• When you are on an approach leg or within 2 nm of the FAF or
MAP waypoints, Auto sets the scale at 0.25.
• If the previous two conditions do not exist, Auto sets to 5.0.
GPSMAP 496 Owner’s Manual
Setting Up the Panel Page
Manually Setting a Course
To set a user-defined bug heading reference:
1. When the Panel Page appears, press Menu to show the Panel
Page options menu.
2. Highlight Set Bug Indicator, and press Enter.
3. Highlight User Selected, and press Enter. A window appears
at the center of the HSI, showing the current bug indicator
setting.
4. Select the heading reference by pressing left or right on the
ROCKER. Press Enter. The bug indicator remains fixed on the
selected heading until a new bug heading is chosen.
To manually set a course to the destination waypoint:
1. With the Panel Page shown, press Menu to show the Panel
Page options menu.
2. Highlight Set OBS and Hold, and press Enter. An OBS data
field appears on the screen. Keep in mind that you must have a
destination waypoint selected.
3. Select the OBS course by pressing the ROCKER left and right.
Press Enter. The course deviation needle and course pointer
now provide steering guidance to the selected course.
To release the waypoint hold and return to automatic sequencing
of route waypoints, press Menu. Highlight Release Hold, and
press Enter.
To cancel the OBS course and reset a direct course to the
waypoint, press Direct To
, highlight Resume Route, and
press Enter to re-start the route.
You can set the bug indicator and change the CDI scale to suit your
needs.
To change the CDI scale:
1. With the Panel Page shown, press Menu to show the Panel
Page options menu.
2. Use the ROCKER to highlight Set CDI Scale, and press Enter.
A window appears at the center of the HSI, showing the scale
settings. The current setting is highlighted.
3. Use the ROCKER to select the scale, and press Enter.
GPSMAP 496 Owner’s Manual
Use the Set OBS and Hold option to manually set your course to
the destination.
41
Aviation
Aviation Mode Pages > Panel Page
Aviation Mode Pages > Panel Page
VNAV (Vertical Navigation)
The “Approaching VNAV Profile” message appears one minute
prior to the initial descent point. The descent angle locks to prevent
changes in speed from altering the profile. The VNAV feature does
not take into account any changes in groundspeed that occur during
the transition from level flight to descent or climb.
At 500 ft above the target altitude, the “Approaching Target
Altitude” message appears, the time to vertical navigation goes
blank, and the VNAV indicator disappears from the Panel Page.
42
Caution: The GPSMAP 496 is a VFR navigation tool and
should not be used to perform instrument approaches. VNAV
is only a VFR navigation aid and is not intended for instrument
approaches.
ile
of
To use the vertical navigation feature, your ground speed must be
greater than 35 knots and you must be navigating a Go To or a route.
Pr
When the VNAV profile is defined, message alerts help keep you
informed of your progress. The teal bar on the HSI on the Panel
Page shows your VNAV profile.
AV
VN
Aviation
The VNAV sub tab in the Main Menu provides settings for the
vertical navigation feature. These settings create a three-dimensional
profile that guides you from your present location and altitude to a
final (target) altitude at a specified location.
Distance to Profile
Glid
eR
atio
to T
arg
et
Target Altitude
Distance to Target
Airport
Visual representation of VNAV
Using the VNAV Feature
Use the VNAV (Vertical Navigation) feature to ensure that you are
flying at the proper altitude. The VNAV Indicator appears on the
HSI (Panel Page) as a horizontal teal bar, as shown in the image on
the next page. A message appears when you are approaching the
VNAV Profile. When the bar is in the vertical center of the HSI, you
are at the proper altitude for the VNAV Profile. Make sure VNAV
Indicator is On in the options menu. From the Panel Page, press
Menu to open the options menu. Select Capture VNAV Profile,
and press Enter to center or re-center the VNAV indicator on
the graphic HSI. You must have entered a valid vertical navigation
profile and be navigating.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > Panel Page
Panel Page Showing the VNAV Indicator
VNAV indicators also appear on the Map Page when the page layout
is set to Map With Overlay. You are at the proper altitude for the
VNAV profile when the blue bars are centered within the VNAV
indicators.
Aviation
VNAV
Indicator
The VNAV
Waypoint
automatically
changes to
your destination
after you begin
navigating to a
destination.
VNAV Setup Tab
Target Altitude—enter the altitude you want to be at when you
reach your target location. Select Above Waypoint to use field
elevation for airports in the Jeppesen database or Above MSL to
specify an exact MSL altitude target.
By—defines the target location with settings of distance Before or
After a reference waypoint (the final destination airport). To set a
target location at a reference waypoint, enter a distance of zero.
VNAV
Indicator
Map Page Showing the VNAV Indicator
Setting up VNAV
To open the VNAV tab, press Menu twice to open the Main Menu.
Select Setup from the vertical tab list. Then select VNAV from the
row of tabs along the top of the page.
GPSMAP 496 Owner’s Manual
VNAV Waypoint—allows you to select any waypoint along the
currently active route (or Go To) as your reference waypoint. The
reference waypoint defines the target location.
VNAV Profile—allows you to select the descent rate.
VNAV Messages—enables and disables VNAV alert messages.
43
Aviation Mode Pages > Active Route Page
Aviation
Active Route Page
Whenever you start a route (flight plan) or initiate a Go To while
in Aviation or Marine Mode, 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.
As you navigate a route, the list automatically updates to indicate the
active point first. The Active Route and Route Review Pages share
many of the same features and options.
Press Page repeatedly to open the Active Route Page.
Active Route Page
44
Note: If you have created a route (Flight Plan) with a Jeppesen
point that is no longer current after you perform an update to
your Jeppesen database, the route is locked. You need to create a
new route with current Jeppesen database points.
Active Route Page Options
Press Menu while on the Active Route Page to open the options
menu. You can edit the route using many of the options in the menu
such as Edit on Map (see page 77 for information), Add Waypoint,
and Invert. You can also change the data fields to suit your needs.
You can also select an approach for your landing and set your fuel
flow (or plan your route, based on your current Usage Mode):
Select Approach—(Aviation Only) allows you to select the
final course segment of a published approach, replacing the
final destination airport in a Go To or route with the sequence of
waypoints for the selected approach. The approaches provide only
the final course segment, usually from final approach fix (FAF)
to missed approach point (MAP), and are based on existing GPS,
RNAV, VOR, NDB, localizer, or ILS approach procedures. All
approach procedures are flown as a sequence of waypoints in the
route. To select an approach and add the waypoints to the route,
the final destination in the Go To or route must be an airport with a
published approach.
Set Fuel Flow (Plan Route)—allows you to enter information about
your aircraft and route.
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > Position Data Page
The Position Data Page provides a quick reference for the important
data you want to show while navigating a route in Aviation and
Marine Modes. The default page shows a compass ribbon, your
current latitude and longitude, the current date and time, the location
you are in reference to the nearest landmark, and eight userselectable data fields. The compass ribbon is shown at the top of the
page to show your current heading with a red, vertical bar. To stay
on course, steer toward the violet bar (or arrows) until it is aligned
with the red bar.
Press Page repeatedly to open the Position Data Page.
Position Data Page Options
With the Position Data Page open, press Menu to open the options
menu. You can set up the layout of the page and change the data
fields. For an explanation of the data fields, refer to page 174. You
can also select one of the following options:
Change Nearest Type—allows you to specify the type of item to
be used as the nearest item (shown in the lower-left data field). The
choices differ based on the Usage Mode you are currently using.
Choose Automatic to allow the unit to pick the appropriate type of
landmark for your present 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
Airport is selected as the Nearest Type. The Wheeler Downtown (KMKC)
airport is the nearest airport, and you are 6.3 nm S of KMKC.
GPSMAP 496 Owner’s Manual
45
Aviation
Position Data Page
Aviation Mode Pages > Flight Log
Aviation
Flight Log
The Flights tab shows a list of any recorded flights, including date,
route of flight, and flight time. The GPSMAP 496 saves up to 50
recorded flights while in Aviation Mode. Entries on this list are
automatically created for each flight.
The bottom of the Flights tab shows the time of your last flight. This
resets if you select All Unit Defaults from the System tab options
menu.
To view details for a flight:
1. Press Menu twice to open the Main Menu.
2. Highlight Flights from the vertical menu of tabs.
3. Press Menu and select Show Hours and Minutes to view the
flights in minutes and hours, if you prefer.
4. Highlight the flight, and press Enter. The flight details window
opens, shown below.
5. With OK highlighted, press Enter to return to the Flights tab.
An optional FlightBook software package is available to further
simplify your flight record keeping. For details about FlightBook,
visit the Garmin Web site at www.garmin.com/aviation.
Viewing the Flight Log
Recording begins when your speed exceeds 30 knots and you
gain 250 feet of altitude. The Route of Flight field uses the
nearest airport as the departure airport. The destination airport is
continuously updated as your flight progresses.
If you land and groundspeed drops below 30 knots, the flight entry
is saved and a new entry is recorded when you depart the airport.
A touch-and-go or brief stop of less than 10 minutes appends to the
current flight record, rather than starting a new entry.
Select any listed entry in the log to view additional information.
46
Flight Tab
Showing the flight details page
Deleting Flight Records
You can delete the highlighted flight record (Delete Flight) or delete
all flight records from the Flight Log (Delete All). To delete flights,
press Menu (with the Flights tab information shown). Use the
ROCKER to highlight a menu option, and press Enter.
GPSMAP 496 Owner’s Manual
Aircraft Information
The Aircraft tab is divided into two sub tabs: Aircraft Profile and
Weight & Balance.
To open the Aircraft tab:
1. Press Menu twice to open the Main Menu.
2. Highlight Aircraft from the vertical list of tabs.
3. Press the ROCKER right or left to highlight either the Aircraft
Profile tab or the Weight & Balance tab from the top of the
screen.
Aircraft Profile Tab
Entering Your Aircraft Profile
The Aircraft Profile tab allows you to profile cruising speed,
maximum speed, fuel flow, and map symbol. The unit can save up to
10 aircraft profiles.
GPSMAP 496 Owner’s Manual
Cruising speed and fuel flow are used as default settings when
viewing trip planning information on the Route Review Page. The
maximum speed is used to define the range for airspeed on the Panel
Page and is automatically updated if you exceed this figure.
To enter an aircraft profile:
1. From the Aircraft Profile tab, use the ROCKER to highlight New,
and press Enter.
2. Highlight the Current Aircraft field, and press Enter.
OR
Highlight the Rename button, and press Enter.
3. Use the ROCKER to enter the aircraft tail number (or other
identifying information) in the Current Aircraft field. Press
Enter when finished.
4. Use the ROCKER to enter information for the cruising and
maximum speeds for your aircraft, your aircraft’s fuel flow, and
the symbol for your aircraft.
Select a symbol for your aircraft to change the data fields on the
Panel Page and the map symbol.
To select a saved aircraft profile:
1. From the Aircraft Profile tab, use the ROCKER to highlight the
Current Aircraft field, and press Enter.
2. Use the ROCKER to select the aircraft profile, and press Enter.
47
Aviation
Aviation Mode Pages > Aircraft Information
Aviation Mode Pages > Aircraft Information
Aviation
To rename or delete a saved aircraft profile:
1. From the Aircraft Profile tab, use the ROCKER to highlight the
Current Aircraft and to select the profile you want to rename.
2. Use the ROCKER to select the on-screen Rename or Delete
button, and press Enter. If Rename is selected, use the
ROCKER and Enter keys to enter a new tail number.
Calculating the Weight & Balance
Weight & Balance may be used during your pre-flight preparations
to verify the weight and balance conditions for your aircraft. By
entering the weight and arm values on this page, the GPSMAP 496
can calculate the total weight, moment, and center of gravity (CG) to
ensure a safe flight.
Before entering the various figures, you need to determine the
empty weight of the airplane and the arm (or “station”) for each
weight entered. These figures should be determined using the pilot’s
operating handbook for your airplane, which also notes the weight
limitations and fore/aft CG limits. Compare those figures to the
values calculated by the GPSMAP 496.
To perform weight and balance calculations:
1. Press Menu twice to open the Main Menu.
2. Highlight Aircraft from the vertical list of tabs.
3. Press the ROCKER right to highlight Weight & Balance.
48
Weight & Balance Tab
4. Highlight the weight field, and press Enter.
5. Use the ROCKER to enter the weight figure. Press Enter.
6. Change the weight units. Highlight lbs, and press Enter.
OR
Select Kgs, and press Enter.
7. Highlight the corresponding arm field, and press Enter.
8. Use the ROCKER to enter the arm figure. Press Enter.
9. Repeat steps 4 through 8 until all figures are entered. The
calculated moment, weight, and CG figures appear at the bottom
of the page. Keep in mind that the “Aircraft” (empty weight/arm)
figures must be entered as a reference to calculate a valid
moment, weight, and CG.
10.To empty the aircraft, press Menu, select Empty Aircraft, and
press Enter.
Note: This information is only for flight planning purposes.
Consult your aircraft’s pilot handbook for the official weight and
balance data.
GPSMAP 496 Owner’s Manual
E6B Tab
The E6B tab in the Main Menu calculates Density Altitude, True
Airspeed, and Winds Aloft (Head Wind, Tail Wind, Wind From, and
Wind Speed), based on information you enter.
To open the E6B tab of the Main Menu:
1. Press Menu twice to open the Main Menu.
2. Highlight E6B from the vertical list of tabs.
Barometric
pressure
from the
nearest
METAR
Calculated
figure
Calculated
figures
Calculated or
user-entered
figure
E6B Tab
Indicated Altitude—required entry for density altitude/true airspeed
calculation. Enter the aircraft’s altimeter reading.
Calibrated Airspeed—required entry for density altitude/true
airspeed calculation. Enter the aircraft’s airspeed indicator.
Heading—required entry for winds aloft calculation. Use heading
from the aircraft’s heading indicator or directional gyro.
GPSMAP 496 Owner’s Manual
Baro Pressure—when the unit is receiving XM weather
information, the field automatically updates to the barometric
pressure of the nearest METAR. If XM weather information is not
available you need to enter the current barometric pressure.
Total Air Temperature—required entry for density altitude/true
airspeed calculation. Total Air Temperature (TAT) is the temperature
of the air including the heating effect caused by speed. The
temperature reading on a standard outside air temperature gauge
found on most piston aircraft is TAT.
Head Wind—(calculated figure) determined from entry of heading
and true airspeed.
Wind From—(calculated figure) determined from entry of heading
and true airspeed.
Wind Speed—(calculated figure) determined from entry of heading
and true airspeed.
True Airspeed—(calculated or user-entered figure) determined
from entry of calibrated airspeed, barometric pressure, and total
air temperature. This can also be entered directly for winds aloft
calculations.
Density Altitude—(calculated figure) determined from entry of
indicated altitude, barometric pressure and total air temperature.
49
Aviation
Aviation Mode Pages > E6B Tab
Aviation Mode Pages > E6B Tab
Aviation
To calculate true airspeed and density altitude:
1. From the E6B tab, highlight the Indicated Altitude field (at the
top of the page), and press Enter.
2. Use the ROCKER to enter the altitude shown on your altimeter.
Press Enter when finished.
3. Repeat steps 1 and 2 to enter the Calibrated Airspeed,
Baro Pressure, and Total Air Temperature. (For Calibrated
Airspeed, use the speed shown on your airspeed indicator.
Use the current altimeter setting for Baro Pressure. Total Air
Temperature is the temperature of the outside air including
the heating effect caused by speed. For most aircraft, this is
the temperature reading on a standard outside air temperature
gauge.) The calculated figures for True Airspeed and Density
Altitude are shown in the designated fields.
Barometric
pressure
from the
nearest
METAR
Calculated
figure
Calculated
figures
Calculated or
user-entered
figure
To calculate winds aloft:
1. Follow the steps in the previous procedure to determine true
airspeed.
OR
Use the ROCKER and Enter keys to manually enter a true
airspeed figure in the True Airspeed field.
2. Use the ROCKER to highlight the Heading field, and press
Enter.
3. Use the ROCKER to enter the aircraft heading shown on your
directional gyro or compass. Press Enter when finished.
The calculated figures for Head Wind, Wind From, and Wind
Speed appears.
Note: If a True North reference is currently selected as the
heading reference on your GPSMAP 496, you must enter
Heading using a True North reference to determine winds
accurately.
To restore defaults on the E6B tab:
1. Open the E6B tab on the Main Menu.
2. Press Menu to open the options menu.
3. Highlight Restore Default, and press Enter.
E6B Tab
50
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > XM Audio Page
Use the XM Audio Page to view and select XM Radio channels, add
channels to or remove channels from the Favorites category, and
turn XM audio output on or off.
Note: You MUST have a GXM 30A or GXM 30 smart
antenna connected to your GPSMAP 496 and a subscription to
XM Radio to use XM Radio features. Additionally, you must
use an optional external speaker with vehicle power cable,
third-party FM modulator, headphones, or another audio device
plugged in to hear the audio.
Category name
Channels
Channel
name
Song title
XM Audio Page
Signal
strength
indicator
The XM Audio page is available in Aviation, Marine, and
Automotive Modes, but it is not shown by default in any mode.
However, the XM tab always appears on the Main Menu, even if the
XM Audio Page is turned off.
GPSMAP 496 Owner’s Manual
The middle pane shows a list of channels in the selected category.
Each channel has a description and the artist currently playing. You
can adjust this setting to show the song title instead of the artist. The
bottom pane shows the song and artist or program name, the channel
number and name, and the strength of the XM Radio signal.
Turning on the XM Audio Page
Artist name
Channel
number
The XM Audio Page is divided into three panes. The first pane
contains a list of XM Radio categories into which XM Radio
channels are grouped (Classical, Decades, Traffic, and so on). For
a complete list of available categories and channels, visit the XM
Radio Web site at www.xmradio.com. Select All Channels to view
a list of all channels in numerical order. You can also view a list of
your favorite channels.
Aviation
XM Audio Page
The XM Audio Page is off by default.
To show the XM Audio Page:
1. Press MENU twice to show the Main Menu.
2. Use the ROCKER to highlight the Display tab.
3. Highlight the XM Audio Page field, and press ENTER.
4. Select On, and press ENTER.
Note: Audio interference can occur while using some aviation
audio panels and FM Modulators. Use of a Ground Loop Isolator
can eliminate this interference.
51
Aviation Mode Pages > XM Audio Page
XM Audio Page Options
Aviation
Use the options menu to customize the XM Audio Page. When the
XM Audio Page is open, press MENU to open the options menu.
XM Audio Page Field on the Display Tab
To select an XM Radio channel:
Press up or down on the ROCKER to scroll through the list
of channels, highlight the channel you want, and then press
ENTER. A triangle ( ) appears to the left of the channel currently
playing.
To select an XM Radio category:
Press the IN or OUT keys to change the category.
OR
Highlight the category field, and press ENTER. Use the
ROCKER to change the category.
XM Audio Page Options Menu
The following options are available on the XM Audio Page options
menu:
Add to Favorites—enables you to add channels to the Favorites
category. See page 53 for more information.
Scan—enables you to scan all channels, scan by category, or scan
favorites. Each channel is played for five seconds before advancing
to the next channel in the list. For more information see page 54.
Display Artist (Display Song) In List—enables you to select
whether to display the artist or song title in the channel list.
Mute/Enable Audio Output—enables you to toggle XM audio
output on or off.
52
GPSMAP 496 Owner’s Manual
Aviation Mode Pages > XM Audio Page
You can create a customized list of up to 30 of your XM Radio
favorites.
To add a channel to Favorites:
1. Use the ROCKER to select a channel, or use the IN and OUT
keys to select a category, and then highlight a channel.
2. Press MENU once.
3. Highlight Add To Favorites, and press ENTER. Repeat to add
additional channels.
2. Use the ROCKER to highlight Favorites.
3. Press ENTER.
Aviation
Using Favorites
Selected
channel
Favorites List
You can delete a channel from the Favorites list or delete all
channels.
Adding a channel to Favorites
To view and select Favorites with the IN and Out keys:
1. Press the IN and OUT keys to change the category to Favorites.
2. Press up or down on the ROCKER to highlight the channel you
want to select from your list of favorites, and press ENTER. A
triangle appears to the left of the newly selected channel.
To delete a channel from Favorites:
1. In the Favorites category, highlight the channel you want to
delete, and press MENU.
2. Highlight Delete Favorite to delete the selected channel from
your favorites list.
OR
Highlight Delete All Favorites to delete all channels from your
Favorites list.
3. Press ENTER.
4. Highlight OK, and press ENTER again to confirm.
To view and select Favorites with the ROCKER:
1. Highlight the category field, and press ENTER.
GPSMAP 496 Owner’s Manual
53
Aviation Mode Pages > XM Audio Page
Scanning XM Radio Channels
Aviation
From the XM Audio Page, you can scan all channels, scan channels
in a specific category, or scan channels in your Favorites.
To scan XM Radio channels:
1. On the XM Audio Page, press MENU.
2. Select Scan on the options menu, and press ENTER.
3. Select All Channels to scan all channels.
OR
Select Category to scan only channels in the selected category.
OR
Select Favorites to scan only channels in your Favorites list.
4. Press ENTER. Each channel plays for five seconds, and then
advances to the next channel.
5. Press any key to stop scanning and select the current channel.
54
Turning Audio On or Off
To turn audio on or off:
1. On the XM Audio Page, press MENU.
2. Highlight Mute Audio Output on the options menu to turn off the
audio. A music note with a red slash appears in the Song pane.
Highlight Enable Audio Output to resume audio output.
Audio output is off
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Automotive Mode Page Sequence
Basic Operation In Automotive Mode
To switch usage modes:
1. Press and hold Page/MODE.
2. Use the ROCKER to select either Aviation, Automotive, or Marine, and press Enter.
Automotive
Automotive Mode Page Sequence
Automotive Mode features two main pages: the Map and Trip Computer Pages. Optional Highway, Compass, and XM Audio Pages can
be enabled in Automotive Mode. Two additional pages appear during active navigation while in Automotive Mode—a Current Route Page
appears if you are navigating a turn-by-turn route, and an Active Route Page appears if you are navigating “Off Road.” See “Navigating in
Automotive Mode” beginning on the next page for more information.
Map Page
Compass Page
(Optional)
Highway Page
(Optional)
Current Route Page Trip Computer Page
XM Audio Page
(Optional)
To add the Compass, Highway, or XM Audio Pages:
1. Press Menu twice to show the Main Menu. Use the ROCKER to highlight the Display tab.
2. Highlight the Highway Page, Compass Page, or XM Audio Page fields, and press Enter. Select On, and press Enter.
GPSMAP 496 Owner’s Manual
55
Basic Operation in Automotive Mode > Navigating in Automotive Mode
Navigating in Automotive Mode
Automotive Mode and Marine Mode are similar. Most of the
features discussed here also apply to Marine Mode.
There are several ways to begin navigating to a point in Automotive
Mode:
Automotive
.
• Select a point on the map and press Direct To
to start a new route using the Find menu, or
• Press Direct To
start a saved route or track.
• Press Nrst/Find to search for a particular item and create a
route to it.
You can also start a saved route through the Routes tab on the Main
Menu. For more information, refer to page 61.
To go to a highlighted map item:
1. Use the ROCKER to highlight the item you would like to navigate
to on the Map Page.
2. Press Direct To
. Go To <point name> is added to the list
of options and automatically highlighted. If you have selected an
area of the map that is not a map feature, Go To MAP Point is
listed. Select Go To <point name> or Go To MAP Point, and
press Enter.
Navigate Options in Automotive Mode
With Map Feature highlighted while navigating a course
3. Follow the magenta route created on the Map Page. Follow the
turn-by-turn route (auto-route) by using the Next Turns Page and
Current Route Page. If you are using the external speaker, follow
the voice prompts.
56
GPSMAP 496 Owner’s Manual
To start new route using the Find Menu:
1. Press Direct To
to open the Navigate menu.
2. Highlight New Route (or Go To Point when in Marine Mode),
and press Enter to open the Find Menu.
3. From the Find Menu, highlight Waypoints, and press Enter.
(You can also choose to go to other points, such as Cities or
Services from this list. The steps vary only slightly from those
listed for Waypoints.)
4. Select a waypoint from the list, and then press Enter to show
the Waypoint Page.
To search for an item and route to it:
1. Press Nrst/Find to open the Find Menu.
2. Using the ROCKER, highlight a category, such as Cities, and
press Enter.
3. Press Enter and use the ROCKER to begin entering the letters
contained in the item name. The list begins to sort by the items
that contain the letters you are entering. Press Enter.
Finding an item using the Containing field: The unit searches for items
containing the letter combination you enter and shows them in the list.
Waypoint Page
Activating a Go To using the Find Menu
5. The Waypoint Page automatically opens. With the Go To button
highlighted, press Enter to begin navigation.
GPSMAP 496 Owner’s Manual
4. Highlight an item from the list, and press Enter.
5. Highlight the Go To button, and press Enter.
For complete information about finding an item, refer to page 58.
57
Automotive
Basic Operation in Automotive Mode > Navigating in Automotive Mode
Basic Operation in Automotive Mode > Finding an Item
Finding an Item
Using the Find From Feature
The Find Menu is comprised of several default categories such as
Waypoints, Cities, Exits, Addresses, Crossroads, Food & Drink,
Attractions Aviation Points, Transportation, and Weather Data.
To find an item from another location on the map:
1. Open the Map Page. Use the ROCKER to pan the arrow
(pointer) to the location you want, and press Nrst/Find.
The Find Menu allows you to easily search the stored waypoints and
points of interest. Press Nrst/Find to access the Find Menu.
Automotive
Find Menu
Follow the directions on the previous page to search for an item near
your current location and then route to it.
58
The Find option also supports a “find from” feature that allows you
to center your search around an item that you have just found.
Find From Map Pointer
2. The Find Menu opens showing “From Map Pointer.” The list of
items is sorted to show items nearest the selected location. Using
the ROCKER, highlight the category you want from the list, and
press Enter.
3. Using the ROCKER, highlight an item from the list, and press
Enter. The item’s information page automatically opens,
allowing you to save the item as a waypoint, show the item on
the map, or automatically create a route to (Go To) the item.
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Finding an Item
To find an item near another item:
1. Press Nrst/Find.
2. From the Find Menu, highlight the item you want to Find From.
3. Press Nrst/Find with the item highlighted. The Find Menu
opens again with items near the previously selected item. Search
for the item.
Recently Found Items
The Recently Found Page shows a list of the items you have
searched for or gone to recently.
Find From Options
4. Select a reference location on the map, and press Enter. The
list shows items near the new map location.
To view recently found items:
1. Press Nrst/Find. The Find Menu opens.
2. Use the ROCKER to highlight Recently Found. Press Enter.
The Recently Found Page opens.
3. Press Menu to show the options menu:
Show Find History—allows you to toggle between showing the
items you have searched for recently (Find History) and the items
you have recently created a Go To for (Go To History).
Remove Point—removes the point that is highlighted in the list.
GPSMAP 496 Owner’s Manual
59
Automotive
To find an item from another location:
1. From any page, press Nrst/Find.
2. Using the ROCKER, highlight the category you want from the list,
and press Enter.
3. Press Menu. Highlight Near Other, and press Enter. If you
are actively following a route, you can also choose one of the
other options listed in the Find From list, as shown below.
Basic Operation in Automotive Mode > Finding an Item
Viewing the Information Page
Find Menu Options
To view details about an item:
1. Highlight a point on the map or in the search results list, and
press Enter.
An Information Page appears with details about the item in a
tabbed format. Based on the type of item, additional options
are available for viewing the item on the map, viewing the list of
maps on your data card, and viewing the next item in the search
results list.
Enable Auto Arrange—automatically arranges the Find Menu.
Disable Auto Arrange and Restore Default options appear when
you select Enable Auto Arrange.
Each item on the map and each item listed in the Find Menu results
list has an information page.
To view additional options for the Find Menu, press Nrst/FInd,
and then press Menu.
Automotive
Near Other—allows you to select a new location from which to
compile the Find items list. Using the ROCKER, move the map
arrow to a location, and press Enter.
Map Information—shows information about the detailed map data
stored on the data card and allows you to select which maps are
shown on the Map Page.
Additional selections are included in the options menu when you are
navigating:
Near Next—compiles the Find items lists based on the next turn in
the route.
Information Page
2. Press Page or Quit to exit the information page. You can also
highlight one of the on-screen buttons, and press Enter to
perform that operation.
60
Near Destination—compiles the Find items lists based on the route
destination.
Near Current Route—compiles the Find items lists based on the
active route.
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Creating Routes
The GPSMAP 496 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.
To create a route using the Find Menu:
1. Press Menu twice to show the Main Menu.
2. Use the ROCKER to highlight Route from the vertical list
of tabs.
3. Press Menu to show the Route options menu. Select New
Route, and press Enter.
OR
Highlight the first available blank route slot and press Enter.
The Route Review Page automatically opens, showing a blank
route.
4. Press Enter to find items to add to the route.
5. The Find Page or Find Menu opens (based on which Usage
Mode you are in). Using the methods discussed in the “Finding
an Item” section beginning on page 58, select a point to add
to your route. When you find an item, highlight OK, and press
Enter to add the point to the route. Repeat until you have
added all of the points to the route.
Automotive
Creating Routes
Route Tab
Creating a New Route on Route Review Page
GPSMAP 496 Owner’s Manual
61
Basic Operation in Automotive Mode > Creating Routes
Automotive
To create a route graphically:
1. Press Menu twice to show the Main Menu. Use the ROCKER to
highlight Route from the vertical list of tabs.
2. Press Menu to show the Route options menu. Select New
Route, and press Enter.
3. Highlight the first blank slot in the Route List Page, and press
Menu. Use the ROCKER to highlight Edit on Map, and press
Enter.
4. Use the ROCKER to highlight the location, and press Enter.
Press MENU and select Append To Route.
If you select an area of the map that is not a feature or waypoint,
a new waypoint is created for that location. Press Enter on
the New Waypoint Page to save the location as a waypoint and
continue adding points to your route. You can edit the properties
of this waypoint as you can with any waypoint.
5. Repeat until you have added all points to the route.
6. When finished, press Quit twice to return to the Route Review
Page.
OR
Press Menu, highlight Edit as Text, and press Enter to view
the Route Review Page.
To follow a saved route in Automotive Mode:
1. Press Menu twice to show the Main Menu. Use the ROCKER to
highlight Route from the vertical list of tabs.
2. Highlight the route you want to start, and press Menu.
3. Highlight Activate Route, and press Enter.
4. The Active Route Page opens. Press Menu. Highlight Follow
Roads, and press Enter. The GPSMAP 496 automatically
generates a turn-by-turn route following roads.
If you want to follow roads on your route, press Menu and select
Follow Roads on the Active Route Page.
Creating a New Route on the Map
62
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Creating Waypoints
Creating Waypoints
Marking Your Present Location
The GPSMAP 496 stores up to 3,000 alphanumeric waypoints
with a user-defined icon, category, comment, altitude, depth, and
temperature available for each waypoint. Waypoints can be created
using three basic methods:
To mark your present location:
1. Press and hold Enter/Mark until the New Waypoint Page
appears, then release it. A default four-digit name and symbol are
assigned for the new waypoint.
The Enter/Mark key lets you quickly capture your present
location to create a new waypoint. You must have a valid location
(2D or 3D) fix to mark your present location. You can determine the
satellite fix by looking at the GPS tab on the Main Menu.
• Enter/Mark —allows you to quickly mark your present
location.
• Graphically—allows you to define a new waypoint location
from the map show using the ROCKER.
• Text Entry—allows you to enter a new waypoint’s location
coordinates manually.
New Waypoint Page
2. To accept the waypoint with the default information, use the
ROCKER to highlight OK, and press Enter.
3. To change any information on the New Waypoint Page, highlight
the appropriate field, and press Enter. After entering and
confirming your changes, highlight OK, and press Enter.
GPSMAP 496 Owner’s Manual
63
Automotive
Waypoints are locations or landmarks you record and store in your
GPSMAP 496. Save your current location as a waypoint by pressing
and holding Enter/Mark. You can also find waypoints using the
map or Find Menu and them store them in the unit.
Basic Operation in Automotive Mode > Creating Waypoints
Creating Waypoints From the Map
You can create a waypoint using the Map Page. When you pan the
map and move the arrow over a map item, a highlighted description
of that item appears. The GPSMAP 496 uses the map item text
shown on the map as the default name and symbol for the new
waypoint.
Automotive
To create a new waypoint using the Map Page:
1. Press page until the Map Page appears.
2. Use the ROCKER to move the arrow to the map location, or map
feature.
3. Press and quickly release Enter/Mark to capture the arrow
location. Pressing and holding Enter/Mark, marks your
present location, not the arrow’s location.
If you have highlighted a map feature, an information page
appears after you press Enter. Use the ROCKER to highlight
Save, and press Enter to save the item as a waypoint. The
New Map Waypoint Page appears.
64
Map Feature Information Page
Select Save to save the map feature as a waypoint
4. To accept the waypoint with the default information, highlight OK,
and press Enter.
To change the any information on the New Map Waypoint Page,
highlight the appropriate field, and press Enter. After entering
your changes, highlight OK, and press Enter.
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Creating Waypoints
You can manually enter location coordinates to create a waypoint.
This method is useful for creating a waypoint at a specific latitude/
longitude location from a chart. You can manually change the
location coordinates in the New Waypoint Page to create a new
waypoint or use the Create Waypoint selection in the User Points
tab options menu.
To create a new waypoint by entering location coordinates:
1. Press Enter/Mark to create a waypoint (or use your favorite
method discussed in previous sections). The new waypoint
is created with the next available waypoint number and the
receiver’s last known location as the default location.
GPSMAP 496 Owner’s Manual
To change the location of a waypoint, highlight the
character you want to change in the Location field.
Press up or down on the ROCKER to change the
character. Repeat until the new location is entered.
2. On the New Waypoint Page, use the ROCKER to highlight the
Location field, and press Enter. Use the ROCKER to enter the
location coordinates, and press Enter when finished.
3. To change any of the other information, highlight the appropriate
field, and press Enter. Use the ROCKER to enter the new
information.
4. After entering your changes, highlight OK, and press Enter.
65
Automotive
Creating a Waypoint by Entering Coordinates
Basic Operation in Automotive Mode > Following an Automotive Route
Following an Automotive Route
The GPSMAP 496 guides you to your destination using many tools,
such as the Map Page and Current Route Page.
Track Your Progress with the Map Page
Automotive
You can track the progress of your route on the Map Page. Your
route is shown with a magenta line. The next turn appears in the top
bar on the Map Page.
Current Route Page in Automotive Mode
Whenever you have started a turn-by-turn route in the GPSMAP 496
set in Automotive Mode, the Current Route Page shows each turn
of the active route, with the distance to the turn, the street name,
estimated time to arrival, and time of arrival. As you navigate a
route, the next turn appears at the top of the list.
Current Route Page
Map Page Displaying Your Route
Watch your Trip Data
Use the Trip Computer Page to view your trip data. You can track
your speed here, as well as other information related to your trip.
66
Starting and Stopping Navigation
Press Direct To
to open the Navigate menu. Highlight
Stop/Resume Navigation.
GPSMAP 496 Owner’s Manual
Basic Operation in Automotive Mode > Editing Your Route
When you are navigating a route, you can edit that route. You can
add areas and roads to avoid as well as temporary detours to your
current route. You can also add stops along your trip, called Via
Points.
While navigating, press Direct To
shown below.
to open the Navigate Menu,
Navigate Options in Automotive Mode
While navigating a course
GPSMAP 496 Owner’s Manual
Entering Custom Avoids
Custom Avoids allow you to enter specific areas and roads that
you would like to avoid in your navigation. Custom Avoids apply
to all routes, but Detours apply to only the active route. Custom
Avoids can be added while you are navigating a route or before you
navigate.
To enter a custom avoid:
1. Press Direct To
while in Automotive Mode.
OR
Open the Map Page, and press Menu.
2. Select Custom Avoid. Press Enter.
3. Press Enter when the Add Avoid button is highlighted.
4. Select Avoid Road or Avoid Area, and press Enter.
5. Use the ROCKER to move the arrow to the first point in the
avoidance area. Press Enter to select the first point.
6. Move the arrow to the end point and press Enter. During route
calculation and navigation, the GPSMAP 496 avoids the area
within the box or the selected area of the road.
7. When finished, highlight the OK button, and press Enter.
67
Automotive
Editing Your Route
Basic Operation in Automotive Mode > Editing Your Route
Creating a Detour
Automotive
If, while navigating a route, there is road construction or a closed
road, you can have your GPSMAP 496 create a detour route. While
navigating a course, press Direct To . Select Detour from the
Navigate menu. Select the distance you want, and press Enter.
The GPSMAP 496 recalculates your course based on your detour
distance. To end the detour manually, press Direct To
again and
select Cancel Detour.
Adding and Editing Stops (Via Points)
You can add Via Points—points through which you would like to
travel—to your route using the Edit Vias option. Via points are great
for adding a stop at the gas station or bank to your route and are
really helpful when planning a long trip.
To add Via Points to your route:
1. While navigating your route, press Direct To
to open the
Navigate menu.
2. Use the ROCKER to select Edit Vias, and press Enter.
3. The Add/Edit Vias window opens. Press enter with Add Via
Point highlighted.
4. From the window, highlight either Use Map or Find and press
Enter.
5. If you selected Use Map, use the ROCKER to select an item on
the map and press Enter.
If you selected Find, select an item from the Find Menu as
discussed in the “Finding an Item” beginning on page 58.
Remember you can press Menu while the Find Menu is open to
find an item near another location, such as your destination.
6. The new point is added to the route and appears in the Add/Edit
Vias Page. Continue steps 2 through 4 until you have added
all of the Via Points that you want. Highlight Done, and press
Enter to apply the new Via Points to the route.
Add/Edit Vias Page
Showing the original route without via points
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GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Map Page
Automotive Mode Pages and
Features
Map Page
Refer to pages 29–36 in the “Aviation Mode Pages” section for more
details about the Map Page.
The location marker (icon) that shows your travel on the Map Page
is a triangle symbol in Marine and Automotive modes. The
GPSMAP 496 always turns on in location mode, with the last known
location centered on the map. When you press the ROCKER, the
GPSMAP 496 enters pan mode, which moves the map to keep the
white arrow (map pointer) within the screen area.
In Automotive Mode, by default, four user-selectable data fields
appear on the right side of the screen that can be configured to show
any one of the possible data options. The top of the screen shows the
GPS status or the route leg. You can also add additional data fields to
the page or select a full screen map without data fields.
GPSMAP 496 Owner’s Manual
Current
Location
Map Page
Map Zoom
Range
Press the zoom keys (In and Out) to change the map range. Some
items on the map appear only if the map is zoomed in to a certain
level.
Press Menu to open the options menu for the Map Page.
Enter Custom Avoids so your routes does not include areas you
would like to avoid, such as high traffic areas.
Use the ROCKER to measure the distance between two objects on
the map.
Change the page layout and data fields to customize the Map Page.
69
Automotive
This section discusses the major pages in Automotive Mode, such
as the Map Page, as well as some additional features, such as routes
and points.
Data Fields
Automotive Mode Pages and Features > Highway Page
Highway Page
The Highway Page is only available in Marine Mode and
Automotive Mode. In Automotive Mode, the Highway Page is
not shown by default. See the directions to the right to show the
Highway Page.
To hide/show the Highway Page:
1. Press Menu twice to show the Main Menu.
2. Use the ROCKER to highlight the Display tab.
3. Highlight the Highway Page field, and press Enter.
4. Select Off to hide or On to show, and press Enter.
Automotive
Using the Highway Page
To stay on course, steer toward the violet bar (or arrows) until
it lines up with the red bar in the middle. The bottom section of
the screen provides visual guidance to the waypoint on a graphic
highway. The line down the center of the highway represents your
track line.
Highway Page
When you are navigating, the Highway Page provides digital and
graphic steering guidance to the destination. The right side of the
Highway Page features user-selectable data fields showing useful
navigation information. A compass ribbon appears at the top of
the page to show your current heading as the violet bar and a red
vertical bar indicates the bearing to your course.
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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
track line. Nearby waypoints not in the active route can also be
shown. You can zoom in or out to show a larger or smaller view of
the highway.
To change the highway perspective scale:
• Press In to zoom in.
• Press Out to zoom out.
GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Highway Page
The Highway Page options menu allows you to define the data fields
and select which waypoints and track are shown on the screen. The
data fields, located along the right side of the page, provide a userselectable layout of various types of useful data. The layout can also
be changed to show additional data fields.
To show and select the Highway Page Options:
1. Press page repeatedly until the Highway Page appears.
2. Press Menu.
3. Use the ROCKER to highlight the option.
4. Press Enter.
Highway Page Options Menu
The following options are available from the Highway Page menu:
Set up Page Layout—allows you to choose the number of data
fields.
Change Data Fields—allows you to specify the type of data shown
in each data field used on the map screen. This option is available
from any of the main pages. See page 174 for a listing of the data
fields.
Set Up Highway—shows an options menu with two tabs: Line, and
Waypoint. Each tab has On/Off settings for several options, such as
enabling the line for the Active Leg and Track Log.
Set up Highway
GPSMAP 496 Owner’s Manual71
Automotive
Highway Page Options
Automotive Mode Pages and Features > Current Route Page
Current Route Page
Automotive
Whenever you have started a route in the GPSMAP 496 in
Automotive Mode, the Current Route Page shows each turn of
the active route, with the distance to the turn, the street name, and
estimated time enroute and time of arrival. As you navigate a route,
the turn list automatically updates to indicate the next turn at the top
of the list.
Next Turn Page
Saving the Current Route
Current Route Page
You can save the current route from the Current Route Page. Press
Menu to save the route. Press Enter when Save Route is
highlighted. Your route is automatically saved, using the starting
point and destination as the route name. Highlight OK and press
Enter to complete saving the route.
You can scroll through the entire list by pressing the ROCKER up
or down. Highlight any of the turns on the list and press Enter to
view the Next Turn Page for that turn. The Current Route and Next
Turn Page screen show similar information, just in a different layout.
The Next Turn Page shows your next turn on a map.
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GPSMAP 496 Owner’s Manual
Trip Computer
Set Up Page Layout—allows you to choose the layout and number
of data fields. You can also select a graphical Dashboard, select to
show the Position Data Page layout (2 Columns), or select 4 Big
Fields as the layout of the page. You can change the Data Fields on
the 2 Columns and 4 Big Fields layout pages.
You can reset the Trip Computer before beginning a trip. If you
make frequent stops, leave the GPSMAP 496 turned on to allow the
unit to accurately measure elapsed time during the trip.
Change Nearest Type—allows you to specify the type of item to
be used as the nearest item (shown in the lower-left data field of the
Position Data (2 Columns) layout). The choices differ based on the
Usage Mode you are currently using.
The Trip Computer Page provides a quick reference for the
important data you want to show in Automotive Mode. It indicates
your current speed and many helpful statistics about your trip, such
as bearing, average speed, and moving time.
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.
Trip Computer Page
Reset All—clears all trip information including the maximum speed
and odometer.
Trip Computer Page Options
Press Menu while on the Trip Computer to show the 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.
GPSMAP 496 Owner’s Manual
73
Automotive
Automotive Mode Pages and Features > Trip Computer
Automotive Mode Pages and Features > Editing and Managing Routes
Editing and Managing Routes
The Route tab shows the routes you have created in your
GPSMAP 496 unit. For complete information on routes, see pages
61–62.
Viewing All of Your Saved Routes
Automotive
The Route tab in the Main Menu lists all of your saved routes and
routes on one easy-to-read route list.
Route Tab
To view the route list:
1. Press Menu twice to open the Main Menu.
2. Highlight Route from the vertical menu of tabs using the
ROCKER.
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Using the Route Options
The Route tab in the Main Menu shows all the routes currently
stored in memory, along with a descriptive name for each route.
Highlight a route, and press Menu to open the options menu.
From here you can start a route, copy it, delete it, delete all routes,
and create a new route. You can also set up the routes to manually
transition to the next waypoint.
Manually Transitioning to the Next Waypoint
From the Route tab Option Menu, highlight �Set up Routes, and
press Enter to set the route leg transition (or waypoint transition).
Select Distance to enter a radius so that when you are within the
entered distance, the GPSMAP 496 leads you to the next point on
your route.
When you select Manual, you can transition to the next waypoint
while navigating a route. While you are navigating the route,
open the Active Route Page. Press Menu. Highlight Next Route
Waypoint, and press Enter to have the GPSMAP 496 start
routing you to the next point in your route.
GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Editing and Managing Routes
Navigating a Saved Route
Editing a Route
To navigate a route in Automotive Mode:
1. In Automotive Mode, press Direct To
.
2. Use ROCKER to highlight Navigate Route, and press Enter.
3. Highlight a route, and press Enter. The Active Route Page
automatically opens with the route started.
To change the name of the route:
1. Press Menu twice, and highlight Route.
2. From the Route List Page, use the ROCKER to highlight the
name of the route, and press Enter.
3. From the Route Review Page, use the ROCKER to highlight the
route name field at the top of the page, and press Enter.
After you create a route, use the Route Review Page to edit, change
the name, and review route points for a selected route.
Select route
from list
Enter a new
Route name
here
Select Route
4. Press Menu to open the options menu.
5. Highlight Follow Roads, and press Enter to create a turn-byturn route (auto-route), which appears in the Current Route Page.
Route Review Page
4. Use the ROCKER to enter the route name and then press
Enter.
GPSMAP 496 Owner’s Manual75
Automotive
The Navigate Route option allows you to easily select a saved route.
For information about creating routes, see pages 61–62..
Automotive Mode Pages and Features > Editing and Managing Routes
To review individual route points:
1. Press Menu twice, and highlight Route.
2. Use the ROCKER to highlight the name of the route, and press
Enter.
3. From the Route Review Page, highlight the point, and press
Enter.
Automotive
To add points to the route:
1. Press Menu twice to open the Main Menu. Use the ROCKER to
select Route.
2. Use the ROCKER to select the route, and press Enter.
3. Use the ROCKER to highlight the spot in the route that you
want to add the new point. (The new point is added before the
highlighted route point.) Press Menu.
4. Highlight Insert Waypoint, and press Enter. The Find Menu
automatically opens for you to search for and select the point you
want to add to the route.
5. In the point review page, highlight OK, and press Enter to add
the new point to the route.
Route Review Page
4. On the point review page, choose Next (highlight the next point
on the route list), Show Map (show the point on a map window),
or Save (save the point as a waypoint), and press Enter. If the
route point is a user waypoint, you can edit any of the waypoint
properties on the Waypoint Page (see the “Editing and Managing
Waypoints” section beginning on page 78).
When you return to the Route Review Page, the next point in the
route is automatically highlighted. This allows you to review each
point on the route by pressing Enter repeatedly.
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GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Editing and Managing Routes
To set speed and fuel/plan your route:
1. Open the Route Review Page options menu.
2. Highlight Plan Route, and press Enter. (Highlight Set Speed
and Fuel in Aviation Mode.)
Entering Speed and Fuel Flow for trip planning
3. Enter the data for Speed and Fuel Flow. When in Marine and
Automotive Modes, you also can enter the date and time of you
departure. Press Quit to return to the Route Review Page.
Editing the route on the map
6. If the New Waypoint Page opens, edit the waypoint, highlight OK,
and press Enter.
7. Repeat steps 4 through 6 until all points are added to the route.
Press Quit to finish.
NOTE: Fuel flow rates are measured in “units per hour”. System
setting changes for units of measure (statute, nautical or metric)
do not affect the fuel flow measure. You should enter fuel
flow rates based on information for your vehicle (such as the
operator’s manual or performance specifications) and note the
units of measure (gallons or liters).
GPSMAP 496 Owner’s Manual77
Automotive
To edit the route on the map:
1. Press Menu twice to open the Main Menu. Use the ROCKER to
select Route from the vertical menu of tabs.
2. Select the route, and press Enter. Press Menu to open the
Route Review Page options menu.
3. Highlight Edit on Map, and press Enter.
4. Use the ROCKER to select a location on the route (the route
turns white when the arrow is over the route). Press Enter.
5. Use the ROCKER to drag the route to the new point location,
and press Enter.
Automotive Mode Pages and Features > Editing and Managing Waypoints
Editing and Managing Waypoints
Automotive
When you have created and stored a waypoint, you can modify,
review, rename, move, or delete it at any time through the Waypoint
Review and Waypoint Edit Pages. These pages provide virtually the
same information. For practical purposes, we refer to these pages
as the “Waypoint Pages,” unless it is necessary to discuss them
individually.
To access the Waypoint Review Page from the Map:
1. Use the ROCKER to highlight the waypoint on the Map Page.
2. Press Enter to show the Waypoint Review Page. If the
waypoint is located on a map feature or MapSource or BlueChart
feature, the Waypoint Review Page can include additional tabs
containing information about the other features at that location.
To access the Waypoint Edit Page:
1. Press Menu twice to open the Main Menu.
2. Use ROCKER to highlight Points from the vertical list of tabs,
and highlight the waypoint from the list.
Points Tab in the Main Menu
3. Press Enter to show the Waypoint Edit Page.
If the waypoint is located on a map feature or MapSource or
BlueChart feature, the Waypoint Edit Page does NOT show the
details of the other map features.
Use either of these methods to access the Waypoint Page so you can
edit and manage the waypoint.
Waypoint Review Page
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GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Editing and Managing Waypoints
Symbol field
Name field
To view the waypoint on the map:
1. From the Waypoint Page, highlight Show Map.
2. Press Enter. The waypoint is highlighted on a map with an
information window at the top that shows the waypoint name,
location and distance and bearing from your current location.
On the Show Map screen, 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 page 33 for more information).
Point to on Main Map—returns to the highlighted waypoint on the
Map Page and exits the Waypoint Page.
Waypoint Review Page
To change the waypoint symbol or other element:
1. Open the Waypoint Review or Waypoint Edit Page.
2. Highlight the waypoint symbol field to the left of the waypoint
name or highlight another field you want to change, and press
Enter.
3. Use the ROCKER to select the symbol or enter data, and press
Enter.
GPSMAP 496 Owner’s Manual79
Automotive
To change the waypoint name:
1. Open the Waypoint Review or Waypoint Edit Page.
2. Highlight the Name field, and press Enter.
3. Use the ROCKER to enter a new name, and press Enter when
finished.
Automotive Mode Pages and Features > Editing and Managing Waypoints
Adding a Waypoint to a Route
Averaging the Waypoint’s Location
To add a waypoint to the end of the route:
1. Open the Waypoint Page, and press Menu to open the options
menu.
To calculate the average location:
1. Open the Waypoint Page, and press Menu to open the options
menu.
2. Select Average Location from the menu, and press Enter.The
Average Location window appears.
Append to Route adds the selected waypoint to the end of a route.
This option appears when you are not navigating. When you are
navigating to a destination, Add to Current Route appears. The
selected waypoint is added to the current route before the route
destination.
Average Location makes the unit take several sample location
measurements for the waypoint and recalculate for a more accurate
location reading.
Automotive
Waypoint Options Menu
2. Select Append To Route from the options menu. The Select
Route window appears.
3. Highlight the route or select New Route, and press Enter.
4. With OK highlighted, press Enter to save the waypoint.
80
Average Location
3. Watch the fields change as the unit calculates the average
location of the waypoint. Press Enter to save the location.
Note: You must have a GPS satellite fix before you can
average a waypoint’s location.
GPSMAP 496 Owner’s Manual
Projecting a Waypoint
You can also create a new waypoint by “projecting” the distance and
bearing from a specific location to a new location.
To create a new waypoint by projecting its location:
1. Create a waypoint using your favorite method (discussed in
previous sections). The new waypoint is created with the next
available waypoint number and the receiver’s last known location
as the default location.
2. Press Menu twice to open the Main Menu.
3. Highlight Points from the vertical list of tabs using the ROCKER.
4. Press Menu to open the New Waypoint Page options menu.
5. Highlight Project Location, and press Enter.
6. To change the location from which you are projecting the new
waypoint, highlight the From field, and press Enter. The Find
Menu opens.
Select the point from which you project your new waypoint just
as you would select a waypoint or point of interest. For more
information see the “Finding an Item” section beginning on page
58.
7. To adjust the distance that the new waypoint is projected beyond
the original waypoint, highlight the Distance field and press
Enter. Enter the projection distance and press Enter.
To adjust the bearing that the new waypoint is projected from the
original waypoint, highlight the Bearing field and press Enter.
Enter the bearing, and press Enter.
8. When you have adjusted all elements of the projected location,
highlight Save, and press Enter.
9. Make any other changes to the new waypoint data (such as the
name or symbol), highlight OK, and press Enter.
Project Location Menu
Enter the distance, bearing, and location to project from.
GPSMAP 496 Owner’s Manual81
Automotive
Automotive Mode Pages and Features > Editing and Managing Waypoints
Automotive Mode Pages and Features > Editing and Managing Waypoints
Organizing Waypoints into Categories
Automotive
You can organize your waypoints into categories, which can help
when managing and using your waypoints. For example, you can
create a “Vacation” category that stores all of the waypoints you
use for your upcoming vacation. When the vacation is over, you can
delete all the waypoints in that category by pushing a few buttons.
You can create up to 15 categories.
To create a waypoint category:
1. From any of the waypoint pages or the Points tab, press Menu
to open the options menu.
2. Select Edit Categories, and press Enter.
4. Use the ROCKER to enter a name for the category.
5. Highlight Save, and press Enter.
Now, when you create or edit a waypoint, you can select the
category from the Category list on the Waypoint Page.
To delete a category:
1. With the Waypoint Categories window open, highlight the
category to delete. Press Menu.
2. Select Delete Category, and press Enter.
3. Use the ROCKER to highlight Add, and press Enter.
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GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Editing and Managing Waypoints
Select the
category to
which you want
to assign this
waypoint.
Managing Points
The Points tab features two sub tabs, User and Proximity, that
let you edit waypoints and manage a large number of waypoints
quickly and efficiently. For more information about creating, editing,
and deleting waypoints, refer to the “Creating Waypoints” section
beginning on page 63.
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.
User Points Tab
Waypoint Page
3. Select the category you want, and press Enter.
The User Points tab shows a master list of all waypoints currently
stored in memory. From the User list, you can review, edit, rename,
or delete individual waypoints or delete all user waypoints.
User Points Tab
GPSMAP 496 Owner’s Manual
83
Automotive
To assign a category to a waypoint:
1. Open the Waypoint Page. (You can also change the category on
the New Waypoint Page.)
2. Select the Category field, and press Enter.
Automotive Mode Pages and Features > Editing and Managing Waypoints
The total number of stored and available waypoint information
is available at the bottom of the User sub tab, with the stored
waypoints arranged in alphanumerical order.
Automotive
To start a Go To from the User Points tab:
1. Press menu twice to open the Main Menu.
2. Highlight Points from the vertical list of tabs, then highlight User
from the top row of tabs.
3. Use the ROCKER to highlight a waypoint.
4. Press Direct To
. Highlight Go To <Point Name>, and press
Enter.
OR
Press Enter when the waypoint is highlighted to review the
waypoint on the Waypoint Page. See the previous pages for
detailed information on reviewing and editing waypoints.
Deleting Waypoints
You can delete waypoints from the waypoint list in the Points tab or
from the Waypoint Pages. To delete a waypoint from the Waypoint
Page, use the ROCKER to highlight the on-screen Delete button
and press Enter.
84
To access the Points tab:
1. Press menu twice to open the Main Menu.
2. Highlight Points from the vertical list of tabs.
3. Press the ROCKER right or left to highlight User or Proximity to
open that sub tab.
To delete a waypoint from the User sub tab:
1. From the User sub tab, use the ROCKER to highlight the
waypoint you want to delete.
2. Press Menu, highlight Delete Waypoint, and press Enter.
3. Press Enter to confirm.
Note: When you delete a waypoint, you cannot recover it
from the unit. Back up important waypoints to a computer using
the USB cable and software, such as MapSource, or write the
coodinates down by hand.
GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Editing and Managing Waypoints
To delete waypoints by distance:
1. From the User sub tab, highlight the waypoint to be deleted, and
press Menu.
2. Highlight Delete By Distance, and press Enter.
3. Select Less Than or More Than, and Enter the distance using
the ROCKER.
4. You can select a waypoint or point of interest as the From
location. Highlight the From field, and press Enter. From the
Find Menu, select the location, and press Enter. When OK is
highlighted, press Enter.
5. Highlight Delete, and press Enter to delete all waypoints
within the set location. Choose Cancel or press Quit to stop the
deletion.
Proximity Points
The Proximity Points tab lets you define an alarm circle around a
stored waypoint location. The alarm circle can help you avoid reefs,
rocks, or restricted areas. Up to 100 waypoints can be listed with
a maximum alarm radius of 99.99 nautical miles, statute miles, or
kilometers.
Automotive
To delete waypoints by symbol or category:
1. From the User sub tab, highlight the waypoint you want to delete,
and press Menu.
2. Highlight Delete by Symbol or Delete by Category, and press
Enter.
3. When deleting by symbol, highlight the symbol of the waypoint
you want to delete, and press Enter.
When deleting by category, select the category you want to
delete from the list, and press Enter.
4. Highlight OK, and press Enter to confirm. Choose Cancel or
press Quit to exit without deleting.
Proximity Points Tab
If a proximity alarm circle overlaps an existing alarm circle, a
“Proximity Overlaps Another Proximity Waypoint” message
appears. Because the unit only alerts for one of the overlap points,
use caution when navigating in these areas. If you enter an alarm
circle overlap, you are only alerted to the closest proximity
waypoint.
GPSMAP 496 Owner’s Manual85
Automotive Mode Pages and Features > Editing and Managing Waypoints
Automotive
To turn proximity alarms on or off:
1. Press menu twice to open the Main Menu.
2. Highlight Points from the vertical list of tabs. Highlight Proximity
from the row of tabs along the top of the screen.
3. Use the ROCKER to highlight the field below Proximity Alarm,
and press Enter.
4. Select the ON or OFF setting, and press Enter.
To add a proximity waypoint:
1. From the Proximity Points tab, use the ROCKER to highlight an
empty line on the Proximity List, and press Enter. The Find
Menu appears.
2. Select the waypoint or point of interest from the Find Menu. With
OK highlighted, press Enter to select that point. (For complete
information about the Find Menu, see “Finding an Item” on page
58.) The distance field is now highlighted.
3. Press Enter to begin entry of the proximity radius.
4. Use the ROCKER to enter a distance value (up to 99.99 units),
and press Enter.
86
To clear one or all proximity waypoints from the list:
1. Open the Proximity sub tab.
2. Use the ROCKER to highlight the proximity waypoint to clear,
and press Menu.
Proximity Points Tab Options Menu
3. To clear a single alarm, highlight Remove Point, and press
Enter. To clear all proximity waypoints, select Remove All, and
press Enter.
4. Use the ROCKER to highlight OK, and press Enter.
GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Managing Your Tracks
The GPSMAP 496 draws an electronic breadcrumb trail or “track
log” on the Map Page as you travel. The track log contains points
along its path, including time, and location for each point.
Setting Up and Saving Your Tracks
The track log starts recording as soon as the GPSMAP 496 gets
a location fix. For the best results, clear the track log before you
start traveling because when the track log is full, new track points
overwrite the oldest track points.
The percentage of memory used by the current track log appears at
the top of the Active sub tab. After the track log is cleared, it shows
zero percent. When the screen reaches 100%, the most recent track
points start to overwrite the least recent track points (if Wrap is
selected for Record Mode). To avoid losing track points, save the
track log when it approaches the 99% mark.
You must first save the track log before you can use the Navigate
Track feature. The Save feature allows you to store up to 15 track
logs from certain times and dates.
To access the Track tab:
1. Press Menu twice to open the Main Menu.
2. Highlight Track from the vertical list of tabs.
Active Track Tab
Record Mode—Wrap records over the oldest tracks when the track
log reaches 100%. Fill records a track log until the track log is full
(100%). When Off is selected, the unit does not record tracks.
Interval—Distance records track points after a specified distance
has been traveled. Time creates track points after a specified time
has elapsed. Resolution records track points based on the resolution.
The higher the resolution entered, the more points the unit creates to
make the track.
Value—records a track according to the Interval and Value. Enter a
specific distance, time, or resolution.
Color—select a color for the track when it appears on the map.
GPSMAP 496 Owner’s Manual87
Automotive
Managing Your �Tracks
Automotive Mode Pages and Features > Managing Your Tracks
To clear the track log:
1. Press Menu twice to show the Main Menu.
2. Highlight Track, then highlight the Active sub tab to the right.
3. Select the Clear button, and press Enter.
Automotive
To save a portion of the track log:
1. Press Menu twice to open the Main Menu.
2. Highlight the Track tab, and highlight the Active sub tab.
3. Use the ROCKER to select Save, and press Enter.
4. To save only a portion of the track, highlight No, and press
Enter when the window appears.
5. Select a beginning point, and press Enter. Select an ending
point, and press Enter. The Track Review Page automatically
opens.
Clearing the Track Log
4. Highlight OK, and press Enter. Press Quit to exit.
To save the entire track log:
1. Press Menu twice to open the Main Menu.
2. Highlight Track, then highlight the Active sub tab to the right.
3. Use the ROCKER to select Save, and press Enter.
4. A window pops up asking if you want to save the entire track log.
To save the entire track, highlight Yes, and press Enter.
88
Saving a Portion of the Track Log
6. Highlight OK, and press Enter to save the track. Press Quit to
exit.
GPSMAP 496 Owner’s Manual
Automotive Mode Pages and Features > Managing Your Tracks
The Saved sub tab lists all of the saved tracks in your unit.
Saved Sub Tab
Press Menu to open the Saved sub tab options menu:
Review on Map—shows the highlighted track on the Map Page.
TracBack—navigates the track. You can either navigate the track as
it is saved, or you can navigate the track in reverse.
Delete Track—erases highlighted track from the unit’s memory.
Delete All—erases all tracks from the unit’s memory.
To edit a track:
1. Press Menu twice to open the Main Menu.
2. Highlight the Track tab. Press the ROCKER right to highlight the
Saved sub tab.
3. Highlight the track you want to edit, and press Enter. The Track
Review Page opens. Make changes you want.
Track Review Page
4. Highlight the Name field, and press Enter. Use the ROCKER
to change the name, and press Enter.
5. Select a different screen color when the track appears on the
map.
6. To show this track on the map, highlight the box next to Show on
Map, and press Enter.
7. To begin a TracBack, highlight TracBack, and press Enter. For
more information about the TracBack feature, refer to the next
page.
8. To view the track on the map, highlight Map, and press Enter.
Press Quit to return to the Track tab.
9. Highlight OK, and press Enter to save the track. Press Quit to
exit.
GPSMAP 496 Owner’s Manual89
Automotive
Saved Sub Tab
Automotive Mode Pages and Features > Managing Your Tracks
Navigating a Saved Track
Automotive
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 with up to 300 turns and activating
an inverted route along those points. When 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 save an active track log before you can navigate it as a TracBack.
To start a TracBack using Direct To key:
1. Press Direct To
, then highlight Navigate Track, and press
Enter.
Selecting a Saved Track
2. Highlight the saved track you want to navigate, and press
Enter.
3. Use the ROCKER to select the point you want to navigate to
(TracBack to), and press Enter.
90
TracBack Tips
When a TracBack has been started, the GPSMAP 496 divides the
track into segments called legs. Up to 300 temporary turns are
created to mark the most significant features of the track in order to
duplicate your exact path as closely as possible. To get the most out
of the TracBack feature, remember these tips:
• Always clear the track log at the point that you want to go back
to (such as a dock or campsite).
• The Record Mode option on the Active Track tab must be set to
Fill or Wrap.
• If the track log Interval option on the Active tab is set to the
Time option, the route may not navigate your exact path (keep
the interval set to Resolution for best performance).
• If the receiver is turned off or satellite coverage is lost during
your trip, 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 uses the most significant points of your track so
there are fewer changes in direction.
GPSMAP 496 Owner’s Manual
Basic Operation in Marine Mode > Marine Mode Page Sequence
Basic Operation in Marine Mode
To switch usage modes:
1. Press and hold the Page/Mode button.
2. Use the ROCKER to select either Aviation, Automotive, or Marine, and press Enter.
Marine Mode Page Sequence
Map Page
Compass Page
Highway Page
XM Audio Page
(Optional)
GPSMAP 496 Owner’s Manual
Active Route Page
Marine
Marine Mode features five main pages: the Map, Compass, Highway, Active Route, and Position Data Page, as well as an optional XM Audio
Page. If you are connected to a sonar module, such as a Garmin GSD 20 or GSD 21, an additional Sonar Page is available.
Position Data Page
Sonar Page
(Optional)
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Basic Operation in Marine Mode > Navigating in Marine Mode
Navigating in Marine Mode
Press Direct To
on any page to begin navigating to a
destination. The Go To Point, Navigate Route, and Navigate
Track options operate the same as in Automotive Mode. Refer to the
previous section for detailed instructions on those options. In Marine
Mode, you can initiate Man OverBoard (MOB) navigation, which
places a waypoint in the location and then navigates you back to that
location.
Marine
Navigate Options in Marine Mode
Accessed by pressing Direct To
When you are actively navigating, a magenta line always runs from
your current location to the destination on the Map Page. You can
use the Map Page, Compass Page, Highway Page, and Position Data
Page to help navigate to your destination.
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Man OverBoard (MOB)
The Man OverBoard function (MOB) lets you simultaneously mark
and set a course to a location for quick response to emergency
situations.
To start the MOB function:
1. In Marine Mode, press and hold Direct To
twice.
or press Direct To
Man OverBoard confirmation screen
2. Press Enter to confirm and begin navigating to the MOB
location.
When an MOB has been started, 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 can be deleted like any other waypoint.
GPSMAP 496 Owner’s Manual
Marine Mode Pages and Features > Map Page
Marine Mode Pages and Features
Map Page
Refer to pages 29–36 in the “Aviation Mode Pages” section for more
details about the Map Page.
The location marker (icon) that shows your travel on the Map Page
is a triangle symbol in Marine and Automotive modes. The
GPSMAP 496 always turns on in location mode, with the last known
location centered on the map. When you press the ROCKER, the
GPSMAP 496 enters pan mode, which moves the map to keep the
white arrow (map pointer) within the screen area.
In Marine Mode, by default, five user-selectable data fields appear
on the right side of the screen that can be configured to show any
one of the possible data options. You can also add additional data
fields to the page or select a full screen map without data fields.
GPSMAP 496 Owner’s Manual
Data fields
Current
location
Map range
Map Page
Press the zoom keys (In and Out) to change the map range. Some
items on the map only appear if the map is zoomed in to a specified
level.
• Press Enter to quickly declutter (remove unwanted items)
from the Map Page.
• Press Menu to open the options menu for the Map Page.
• Show and hide the heading line from the options menu.
• Use the ROCKER to measure the distance between two objects
on the map.
• Change the page layout and data fields to customize the Map
Page.
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Marine
Marine Mode operates in a similar fashion to Aviation Mode, while
also providing many features and operations of Automotive Mode.
Refer to the corresponding sections in the Aviation and Automotive
sections for further details.
Marine Mode Pages and Features > Compass Page
Compass Page
During active navigation, the Compass Page guides you to your
destination with data fields and a graphic compass screen with a
bearing pointer.
Rotating
compass ring
Bug indicator
Compass arrow
Data fields
Compass Page in Marine Mode
Marine
The middle of the page features a rotating compass ring that shows
your course over ground (track) while you are moving. Your present
course over ground is indicated at the top of the compass ring. The
direction of the destination (bearing) relative to the course over
ground is indicated by an arrow in the middle of the compass ring
and a course to steer “bug” on the outside of the compass ring.
The compass ring and bearing indicators work independently to
show the direction of your movement and the direction to your
destination. If the arrow points up, you are going directly to the
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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 show your heading.
The right side of the Compass Page shows user-selectable data
fields that show additional information during active navigation. For
definitions of data field settings, refer to page 174.
Compass Page Options
The options menu on the Compass Page allows you to customize
the Compass Page. Like the Map Page, the Compass Page features
user-selectable data fields on the right side of the screen. When the
Compass Page is open, press Menu to open the options menu.
Show Course Pointer/Show Compass—toggles between showing
the Course Pointer, which shows how far off you are from your
course and how to get back on course, or showing the compass
arrow. The Course Pointer is also referred to as a CDI or Course
Deviation Indicator.
Show/Hide Bug Indicator—toggles between showing and hiding
the course to steer bug indicator (the purple tick mark on the
compass ring).
GPSMAP 496 Owner’s Manual
Marine Mode Pages and Features > Compass Page
Using the Marine Timer
The Marine Timer, specifically designed for sail boat racing,
allows you to easily count up or down specified time increments.
As common in sail boat racing, there is often a 5 minute warning
countdown, followed by a 4 minute preparation countdown, and
finally a one minute final countdown. You must change the Compass
Page layout to use the Marine Timer.
To use the Marine Timer:
1. Press the ROCKER up or down to select the time you want to
count. Five (5) minutes is the default.
2. Press Enter to start the timer. Use the ROCKER during the
timing to quickly select a different length of time.
3. Press Enter to stop timing.
GPSMAP 496 Owner’s Manual
Marine Timer on the Compass Page
As discussed previously, the timer is set to count down five minutes.
If you want to change the length of time and the behavior or the
timer, open the Timers Setup tab in the Main Menu.
To set the Marine Timer:
1. Press Menu twice to open the Main Menu.
2. Press the ROCKER down to select Setup and then right to select
the Timers sub tab.
3. Highlight Stop next to Marine, and press Enter to change the
timer’s behavior. Highlight the behavior you want, and press
Enter.
4. Highlight the time field, press enter, and then use the
ROCKER to enter a new time. The maximum time is 60:00
(minutes: seconds). Press Enter when finished.
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Marine
To open the Marine Timer:
1. Press page repeatedly until the Compass Page appears.
2. Press Menu.
3. Use the ROCKER to highlight Set up Page Layout, and press
Enter.
4. Highlight 2 Columns With Timer, and press enter. The Marine
Timer appears in the lower right corner.
Marine Mode Pages and Features > DSC
DSC
The DSC Page allows you to control and set up the Digital Selective
Calling (DSC) features on the GPSMAP 496.
DSC uses marine VHF radio and GPS technologies to transmit
and receive location information. The chartplotter repeats the call
properties received from the VHF radio on the chartplotter. The
GPSMAP 496 requires input from a DSC enabled VHF radio to
show position, and to sound/show alerts from a distress call or
position report. Conversely, the VHF radio requires input from a
GPS to transmit position coordinates for a distress call or position
report. For connection information, refer to “Connecting the Power
and Data Cable” on page 158.
Marine
An emergency DSC distress call allows a vessel in trouble to
transmit a substantial amount of information in a single transmission
or call, without the need for voice communication. When any
nearby rescuer receives the DSC signal, an alarm sounds and they
immediately receive the location of the caller. The rescuer can then
choose to navigate to the caller’s location to assist, or forward the
call on to the Coast Guard. When the Coast Guard receives the call,
they can immediately access the caller’s information (such as who
they are and the type of vessel) in their database while they are in
transit to the caller’s location.
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A non-emergency DSC Position Report allows mariners to exchange
and show the positions of one another. When a DSC position is
received, the mariner can choose to create a waypoint or to show the
received location on an electronic map.
Anytime a vessel receives a DSC call, they can store and quickly
navigate to that location using a Go To. This makes DSC a time
saver, especially in an emergency situation. In order to use DSC,
users must first register their VHF radio with the FCC and receive a
Maritime Mobile Service Identity (MMSI) number.
For more information about Digital Selective Calling and Maritime
Mobile Service Identity (MMSI) numbers, refer to page 168.
DSC Page
GPSMAP 496 Owner’s Manual
Marine Mode Pages and Features > DSC
When the GPSMAP 496 receives a distress call from a connected
DSC enabled VHF radio, an alert message and notification page
appear, and an alarm tone is sounded. Distress calls are shown in the
DSC Call List, and Log with a checkered symbol.
You also have the ability to input a caller’s name, if it is known.
The caller’s name replaces the MMSI number as a reference when
entered.
Understanding Position Reports
A position report is similar to a distress call except no alarm is
sounded. Position reports are not broadcast to all DSC users and are
shown with a boat symbol.
Receiving DSC Calls
Each time you receive a distress call or position report, a
Notification page appears, and the call is placed in the DSC Call List
and Log. The Notification page contains information about the call
including: the type of call (distress or position report), the MMSI
number of the caller, a user definable name, the time and date of the
call, the bearing and distance from your current position, and
the coordinates of the caller. To see the callers location on a map,
select the Show Map button. To create a waypoint at the caller's
location, select the Create Wpt button. To close the Notification
page, press the QUIT key.
When a Distress Call or Position Report is placed in the Call List
and Log, the information on the Notification page is retained.
To review a DSC call or log entry, highlight the entry and
press ENTER. The DSC Entry Review page is identical to the
Notification page with one exception, the entry can be deleted.
To review a call or log entry:
1. Open the Call List or Log from the DSC tab
2. Press up or down on the ROCKER to highlight the call you want
to review.
3. Press Enter to open the DSC Entry Review Page.
DSC Entry Review Page
GPSMAP 496 Owner’s Manual
97
Marine
Understanding Distress Calls
Marine Mode Pages and Features > DSC
DSC Call List
The DSC Call List shows the 50 most recent calls, even if the unit
is left unattended. The Call List shows the most recent call from a
vessel. If a second call is received from the same vessel, it replaces
the first call in the Call List. Press Menu to sort the list and delete
entries.
DSC Log
When DSC calls are received, they are automatically stored in the
Log, with the latest call at the top. The unit can store up to 100 logs.
When 100 logs are received, the oldest log file is removed when a
new call is received. Press Menu to sort the list and delete entries.
Marine
DSC Log
DSC Call List
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GPSMAP 496 Owner’s Manual
Marine Mode Pages and Features > DSC
DSC Directory
entries. Press
ENTER to
open the entry
review page.
Blank entry.
Press ENTER to
add a Directory
entry.
DSC Directory
To add a new Directory entry:
1. Open the DSC Directory in the Main Menu.
2. Use the ROCKER to highlight the first blank space in the
directory list, and press Enter.
OR
Press Menu, highlight New Item, and press Enter.
3. Enter the MMSI number, the name, and any comments.
4. When finished, highlight OK, and press Enter.
GPSMAP 496 Owner’s Manual
Enter the
MMSI number,
Name, and a
Comment in
the fields.
Highlight OK
and press
ENTER to save
the directory
entry.
New Directory Item Page
When a distress call, position report or directory item is named, the
name is attached to that particular MMSI number. If a name is used,
all DSC entries of the same MMSI number show the name.
Another way to input a name is from the Entry Review Page or the
DSC Distress Call or DSC Position Report Pages. The Name and
MMSI are sent to other Garmin GPS units: Only the MMSI numbers
are sent to other non-Garmin DSC users.
99
Marine
DSC Directory
The DSC Directory acts much like a phone book and can hold up to
50 entries. Pressing Menu from this page allows you to add a
New Item, Delete a highlighted entry, or Delete All entries.
Marine Mode Pages and Features > DSC
Navigating to a Position Report or Distress Call
After a Position Report or a Distress Call is received, navigation can
be quickly set to the call location.
To navigate to a Position Report or Distress Call using the
Direct To
key:
1. Press Direct To
.
2. With Go To (MMSI/Name) highlighted, press ENTER.
Setting up DSC
The DSC Setup tab allows you to turn DSC on and off. This Setup
tab also allows you to simulate distress calls and position reports
while the unit is in Simulator Mode (see page 11). Simulating calls
is helpful for practice before connecting to the real system. The
distress call simulator also helps to check if alarms are working
properly.
To navigate to a Position Report or Distress Call using the
Call List or Log:
1. Highlight the call on the Call List or Log, and press
Direct To
.
2. With Go To (MMSI/Name) or (DSC) highlighted, press Enter.
Marine
DSC Setup
Navigating to a DSC Call
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GPSMAP 496 Owner’s Manual
Main Menu > GPS Tab
Main Menu
The Main Menu features some additional pages that are useful to
you as you plan trips and use your GPSMAP 496. Some of these
pages have already been discussed in-depth in previous sections.
This section only contains the additional pages and features found in
the Main Menu that have not been discussed yet.
GPS Tab
The GPS tab provides a visual reference of satellite acquisition,
receiver status, and accuracy. The sky view and signal strength bars
give an indication of what satellites are visible to the receiver and
whether they are being tracked. More information on the GPS tab is
located on page 4.
The following tabs in the Main Menu can be restored their defaults:
Track, E6B, Alarms, Display, Sound, and Setup.
To restore defaults:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to highlight a tab.
3. Press Menu to open the options menu.
4. Highlight Restore Default.
5. Press Enter to restore the tab to the defaults.
GPS Page
To restore all of unit’s settings to the factory defaults at once, select
All Unit Defaults from the options menu of the Setup tab.
GPSMAP 496 Owner’s Manual
101
Main Menu > Weather and XM Tabs
Weather Tab
Use the Weather tab to view individual weather features without
turning all other weather features on or off. For example, you can
select Storm Cells to view only storm cell data on the Map window
that appears on the Weather tab. When you close the Main Menu
and return to the Map Page, all of your previously selected weather
features still appear on the Map Page. Information on the Weather
tab is located on pages 126–131.
NOTE: You must have a subscription to XM WX Weather and
the GXM 30A antenna must be plugged in to the USB port on
the back of the unit to use features described in this section. For
more information about subscribing to XM WX Weather, see
page 180.
XM Tab
The XM tab is where you can view and select XM Radio channels,
add or delete favorites, and obtain radio ID and XM WX Satellite
Weather service level information. The XM tab is divided into two
sub tabs: Audio and Information. Information on the XM tab is
located on pages 51–54.
NOTE: The XM tab always appears on the Main Menu,
regardless of whether the XM Audio Page is turned on or off.
For more information about the XM Audio Page, see page 114.
Audio Sub Tab
The Audio sub tab shows XM Radio channel categories, a list of
available channels, information about the selected channel, and the
strength of the XM signal.
Map Page with XM WX Weather
XM Tab Audio Sub Tab
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GPSMAP 496 Owner’s Manual
Main Menu > Flights Tabs
Information Sub Tab
Use the Information sub tab to view the radio identification number,
XM WX Satellite Weather subscription information, and a list of
weather features available to you based on your subscription plan.
The Information sub tab also shows the age of each weather report
in minutes.
Flights Tab
The Flights tab shows a list of any recorded flights, including
date, route of flight, and flight time. The GPSMAP 496 saves up
to 50 recorded flights while in Aviation Mode. Entries on this list
are automatically created for each flight. More information on the
Flights tab is located on page 46.
XM Tab Information Sub Tab
Flight Tab
Showing the flight details page
Route Tab
Use the Route tab create and store up to 50 reversible routes, with up
to 300 points each. See the “Creating Routes” section beginning on
page 61 for more information about routes.
GPSMAP 496 Owner’s Manual
103
Main Menu > Points and Track Tabs
Points Tab
The Points tab contains two sub tabs, User and Proximity, which
allow you to manage a large number of waypoints quickly and
efficiently. For more information about waypoints, see the “Creating
Waypoints” section beginning on page 63.
User Sub Tab
The User sub tab shows a master list of all waypoints currently
stored in memory. The total number of stored and available
waypoints appears at the bottom of the User sub tab.
Proximity Sub Tab
Use the Proximity sub tab to shows an alarm circle around a stored
waypoint location.
104
Track Tab
Use the Track tab to specify whether or not to record a track log,
define how it is recorded, or save the track log data for future use.
The Track tab is divided into two sub tabs: Active and Saved. For
more information about tracks, see the “Managing Your Tracks”
section beginning on page 87.
Active Sub Tab
The Active sub tab is for the active log (the log currently being
recorded). It displays the amount of track memory used and current
settings.
Saved Sub Tab
The Saved sub tab displays a list of all saved tracks in your unit.
GPSMAP 496 Owner’s Manual
Main Menu > Sonar, Aircraft, and E6B Tabs
Sonar Tab
The Sonar tab contains options for the Sonar Page. See the “Setting
Up the Sonar Page” section beginning on page 140 for more
information about Sonar setup options.
Aircraft Tab
The Aircraft tab is divided into two sub tabs: Aircraft Profile and
Weight & Balance. See page 47.
To access the Sonar Tab:
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to highlight the Sonar tab.
Aircraft Profile Tab
E6B Tab
Sonar Tab
GPSMAP 496 Owner’s Manual
The E6B tab in the Main Menu calculates Density Altitude, True
Airspeed, and Winds Aloft (Head Wind, Tail Wind, Wind From, and
Wind Speed), based on information you enter. See page 49.
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Main Menu > Alarms Tab
Alarms Tab
The Alarms tab allows you to define alarm settings.
To set an alarm:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to select the Alarms tab.
3. Highlight the field below the alarm name you want activate, and
press Enter.
4. Change the mode to On, and press Enter. If necessary,
highlight the next field to the right, and press Enter, enter the
settings, and press Enter.
When an alarm goes off, the alarm message appears on the screen
and the unit emits five (5) beeps. When you select an alarm to be
persistent, the alarm message appears on the screen and the unit
beeps until you press Enter to acknowledge the alarm.
To set a persistent alarm:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to select the Alarms tab.
3. Highlight the box next to the alarm you would like to make
persistent (for example, Next Turn).
4. Press Enter to place a check mark in the Persist box.
When an alarm goes off, it sounds until you acknowledge the
alarm message by pressing Enter.
106
Airspace Alarms Sub Tab (Aviation Mode Only)
Class B, CTA; Class C, TMA; Towers, Cntrl Zones; Restricted,
ADIZ; MOAs; Mode C Veils; Other SUAs—enables and disables
the alarms. Select On to enable or Off to disable.
Altitude Buffer—sets the buffer for the altitude alarm. Highlight
the Altitude Buffer field, and press Enter to select a different
value. Use the ROCKER to select the digits.
Airspace Alarms Tab
Navigation (Nav) Alarms Sub Tab
Next Turn—sets an alarm to indicate next turn in route. Select Off
for no Next Turn alarm. Select Dist to enter a specific distance. For
example, if you enter 1 nm, the Next Turn alarm sounds 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 sounds two minutes before you
reach the next turn. Select Auto for the unit to provide a Next Turn
GPSMAP 496 Owner’s Manual
Main Menu > Alarms Tab
alarm at its discretion.
System Alarms Sub Tab
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. Select Time to enter
a specific time before the destination for the alarm to go off. Select
Auto for the unit to provide an Arrival alarm at its discretion.
Off Course—sets an alarm to sound when off your course. Select
On, then enter a distance.
Anchor Drag—sets an alarm to sound when you have exceeded a
specified drift distance. Select On, and then enter a distance.
Custom POI—sets an alarm to sound when you have entered the
proximity of a custom POI.
Caution: Garmin is not responsible for the consequences
of using a custom POI database or the accuracy of the safety
camera or other custom POI database.
System Alarms Sub Tab
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.
GPSMAP 496 Owner’s Manual
107
Main Menu > Alarms Tab
Weather Alarms Sub Tab
You must be receiving XM WX weather information for the weather
alarms to work.
Sonar Alarms Sub Tab (Marine Mode Only)
You must be receiving sonar NMEA data for Sonar alarms to work.
Sonar Alarms Sub Tab
Weather Alarms Sub Tab
Tornado Warnings—sets an alarm to sound when you enter an area
where a tornado warning is in effect.
Thunderstorm Warnings—sets an alarm to sound when you enter
an area where a severe thunderstorm warning is in effect.
Flood Warnings—sets an alarm to sound when you enter an area
where a flood warning is in effect.
Flash Flood Warnings—sets an alarm to sound when you enter an
area where a flash flood warning is in effect.
Marine Warnings—sets an alarm to sound when you enter an area
where a marine warning is in effect.
108
Shallow Water and Deep Water—sets an alarm to sound when you
enter an area of water that is too shallow or deep.
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.
Drift—sets an alarm to sound when you have exceeded a specified
drift distance. Select On, and then enter a specific distance.
Fish—sets alarm to sound when unit detects a fish of the specified
symbol size.
GPSMAP 496 Owner’s Manual
Main Menu > Celestial Tab
Celestial Tab
The Celestial tab on the Main Menu shows sun and moon
information, tide data, and hunting and fishing information. You can
show this data for your current location, a location from the map, or
a waypoint location. Also, you can select a different date and time,
or use the current data.
To access the Celestial Tabs of the Main Menu:
1. Press Menu twice to open the Main Menu.
2. Highlight Celestial from the vertical list of tabs.
3. Use the ROCKER to show the tab, such as Sun & Moon.
Sun & Moon Sub Tab
The Sun & Moon sub tab provides you with sun rise/set and moon
rise/set times. A graphic screen of the moon phase is also shown.
You can view Sun & Moon information for any date or location.
You can also use the play, fast forward, and stop buttons to view an
animation of the Sun & Moon sub tab.
To view Sun & Moon information for a different date:
1. Use the ROCKER to highlight the Date field and press Enter.
2. Use the ROCKER to change the digits of the date to the date
you want. You can also use the Zoom In and Out keys to view
information for another date. Press and hold In or Out to scroll
quickly through dates.
3. Press Enter when finished. The unit shows the sun and moon
information for the date you entered or selected.
To use the current date again, highlight the Date field. Press Menu,
highlight Use Current Date, and press Enter.
Select the date
and location
Moon phase
Animation
controls for the
sky view
Location of the
sun and moon
in the sky view
Sun & Moon Sub Tab
GPSMAP 496 Owner’s Manual
109
Main Menu > Celestial Tab
To view Sun & Moon information for a different location:
1. Use the ROCKER to highlight the From field and,
press Enter.
2. Highlight Use Find Menu, and press Enter. The Find Menu
automatically opens.
3. Select a waypoint or point of interest, and press Enter.
4. On the waypoint information page, press Enter. The unit shows
the sun and moon information for the location you selected.
Tide Sub Tab
The Tide sub tab contains a graphical chart that shows tide station
information in a 24-hour span starting at midnight station time. You
can choose from different dates and more than 3,000 tide stations.
Enter the date for which you want to
view the tide information
Select the tide station for which you
want to view the information
Time
Height of tide
To use the current location, highlight the From field. Press Enter,
highlight Current Location, and press Enter.
Smallest and
largest tides
for the AM
hours
Tide Tab
Smallest and
largest tides
for the PM
hours
The top of the page shows the tide station and date being referenced.
The chart shows a 24-hour block of time, with the time progressing
from left to right. The solid vertical lines represent 4 hour
increments; the dotted vertical lines represent 1 hour increments.
The tide curve shows as a shaded area, with higher tides being taller
and lower tides shorter. The bottom of the page indicates the times
with the largest and smallest tides.
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GPSMAP 496 Owner’s Manual
Main Menu > Celestial Tab
To view a tide chart for a different tide station:
1. From the Tide tab, highlight the At field, and press Enter. The
Find Menu opens showing the tide stations.
2. Press Menu and select Near Current Location, Near Current
Route, Near Other (select another location using the map),
or Near Destination. The list is updated with your search
requirements.
3. Select a tide station from the list, and press Enter. The Tide
Station Information Page opens.
4. Highlight OK, and press Enter. The Tide tab appears again
showing the tide chart for the selected tide station.
To view the tide chart for another date:
1. From the Tide sub tab with the chart shown, highlight the On
field, and press Enter.
2. Enter the date with the ROCKER, and press Enter. You can
also use the Zoom In and Out keys to view information for
another date. Press and hold In or Out to scroll quickly through
dates.
3. Press Enter. The unit shows the chart for the date you entered
or selected.
To view a chart’s details for another time during the day
(other than current time):
1. From the Tide sub tab with the chart shown, press Menu, and
select Move Cursor.
2. Press the ROCKER right or left to view the chart at another time.
3. To return to the current time, press Menu, and select Stop
Moving Cursor.
To automatically start pointer mode to scroll the chart:
1. Use the ROCKER to highlight the Date field. Then press down to
start the pointer (pan) mode.
2. Scroll the chart right to view the next day or left to view the
previous day.
To use the current date again, highlight the Date field. Press Menu,
highlight Use Current Date, and press Enter.
GPSMAP 496 Owner’s Manual111
Main Menu > Celestial Tab
Hunt & Fish Sub Tab
The Hunt & Fish sub tab provides you with predictions of the good
and best times to hunt and fish in a selected location on a specific
date.
To show the Hunt & Fish information:
1. Press Menu twice to open the Main Menu.
2. Highlight Celestial from the vertical list of tabs using the
ROCKER.
3. Use the ROCKER to select the Hunt & Fish sub tab.
Hunt & Fish Sub Tab
To view Hunt & Fish information for a different date:
1. Highlight the Date field, and press Enter.
2. Use the ROCKER to change the digits of the date to the date
you want. You can also use the Zoom In and Out keys to view
information for another date. Press and hold In or Out to scroll
quickly through dates.
3. Press Enter when finished. The unit shows the information for
the date you entered.
To use the current date again, highlight the Date field. Press Menu,
highlight Use Current Date, and press Enter.
To view Hunt & Fish information for a different location:
1. Use the ROCKER to highlight the From field, and
press Enter.
2. Highlight Use Find Menu, and press Enter. The Find Menu
automatically opens.
3. Select a point, and press Enter.
4. On the information page, press Enter. The unit shows the Hunt
& Fish information for the selected location.
To use the current location, highlight the From field. Press Enter,
highlight Current Location, and press Enter.
112
GPSMAP 496 Owner’s Manual
Main Menu > Message Tab
Message Tab
The Message tab shows a list of messages generated by your
GPSMAP 496. Use the ROCKER to scroll through the list of
messages on the Log tab. Use the Log Filter tab to show only the
types of messages you want to view.
To show or hide messages using the Log Filter:
1. Press Menu twice to open the Main Menu.
2. Highlight Message from the vertical list of tabs.
3. Use the ROCKER to highlight the Log Filter tab. By default all
messages are shown.
To view the messages:
1. Press Menu twice to open the Main Menu.
2. Highlight Message from the vertical list of tabs.
Message Log Filter Tab
Message Log Tab
3. Use the ROCKER to highlight a message. Press Enter to view
detailed information about that message.
GPSMAP 496 Owner’s Manual
4. Use the ROCKER to highlight the message you want to hide,
and press Enter.
5. The message name then appears in the Hide window. Highlight
the message, and press Enter to show it again.
113
Main Menu > Display Tab
Display Tab
The Display tab allows you to set several features the screen, such
as what pages to show in the main page sequence and how long the
backlight stays on.
To view the Display tab:
1. Press Menu twice to open the Main Menu.
2. Highlight Display from the vertical list of tabs.
Twilight Adjustment—allows the unit to adjust the backlight for
optimum viewing during twilight times.
Backlight Timeout—sets the backlight to stay on when it is turned
on, or to time out after a selected period of time has elapsed when
using the battery. The backlight stays on regardless of this setting
when external power is used.
XM Audio Page—enables the page and places it in the main page
sequence.
Highway Page—enables the page and places it in the main page
sequence. Available in Marine and Automotive Modes only.
Compass Page—enables the page and places it in the main page
sequence. Available in Marine and Automotive Modes only.
Display Tab
Main Menu—enables the main menu tabs to contain text and icons
(default) or text tabs only.
Color Mode—sets the screen to a Day, Night, or Auto display.
Auto switches from day to night at sunset and changes back at
sunrise.
114
Backlight Intensity—turns the backlight up or down. Press the
ROCKER right to increase the intensity or left to decrease.
To restore the display to default settings:
1. Press Menu twice to open the Main Menu.
2. Highlight Display from the vertical list of tabs.
3. Press Menu.
4. Highlight Restore Defaults, and press Enter.
GPSMAP 496 Owner’s Manual
Main Menu > Sound Tab
Sound Tab
The Sound tab allows you to customize the sounds your
GPSMAP 496 makes to suit your needs.
To view the Sound tab:
1. Press Menu twice to open the Main Menu.
2. Highlight Sound from the vertical list of tabs.
Voice Prompt—sets the vocal prompt to operate for Guidance and
Status, Route Guidance Only, or No Voice Prompts.
Terrain Audio (Aviation Mode)—turns audible terrain alerts on
and off. Also enables or disables the audible “Five hundred” altitude
reminder that occurs when you descend through 500 feet above the
destination airport.
TIS Audio (Aviation Mode)—turns audible TIS traffic alerts on
and off.
Audio Volume—sets the external speaker volume (when used).
Press the ROCKER right to increase the volume or left to decrease.
Sound Tab
Beeper—sets the beeper to chime during key presses and alarms
(Key and Alarm or Alarms Only).
Attention Tone—turns the attention tone that sounds before the
vocal prompts on and off.
Audio Jack—sets the type of audio signal generated from the unit's
external audio jack. Use Line Out (default) to connect to your
headsets or audio panel. Use Headphones for connecting directly to
a pair of personal stereo headphones.
To restore the sound to defaults:
1. Press Menu twice to open the Main Menu.
2. Highlight Sound from the vertical list of tabs.
3. Press Menu.
4. Highlight Restore Defaults, and press Enter.
GPSMAP 496 Owner’s Manual115
Main Menu > Setup Tab
Setup Tab
To customize how your GPSMAP 496 operates, adjust certain
system settings in the Main Menu.
System Sub Tab
To open the System tab, press Menu twice to open the Main Menu.
Select Setup from the vertical tab list. Then select System from the
row of tabs along the top of the page.
Text Language—allows you to select from various languages for
the unit’s pages and menus.
WAAS—allows you to Disable and Enable WAAS from this field.
External Power Off—allows you to select whether the
GPSMAP 496 remains on (Stay On) or the unit turns off (Turn Off)
when external power is removed from the unit.
External Power On—allows you to turn the GPSMAP 496 on
(Turn On) or charge the battery (Charge Battery) when external
power is applied to the unit.
VNAV Sub Tab
System Setup Tab
The VNAV sub tab on the Main Menu provides settings for the
vertical navigation feature. These settings create a three-dimensional
profile that guides you from your present location and altitude to a
final (target) altitude at a specified location. See page 42.
System Mode—sets the unit to operate in Normal Mode, Battery
Saver Mode, or Simulator Mode (for practice ONLY).
Usage Mode—sets the unit to the mode you want.
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).
116
VNAV Sub Tab
GPSMAP 496 Owner’s Manual
Main Menu > Setup Tab
Road Routing Sub Tab
Use the Road Routing sub tab to select road routing settings.
To access the Road Routing sub tab
1. Press MENU twice to open the Main Menu.
2. Use the ROCKER to select the Setup tab.
3. Press right on the ROCKER to select the Road Routing sub tab.
Road Routing Sub Tab
Route Preference—allows the unit to calculate a route for:
• Faster Time—routes calculated are faster to drive, but can be
longer in distance.
• Shorter Distance—routes calculated are shorter in distance but
can take more time to drive.
• Off Road—creates a direct line from your current location to
your destination. This is useful when you are travelling outside of
detailed map coverage areas or where no roads exist.
Ask My Preference—determines whether you are asked to select a
route preference before route calculations.
Calculation Method—sets how the unit searches for the route.
• • Quickest Calculation—calculates the route the quickest,
but it might not produce the best route.
• Quick Calculation—takes more time to calculate, but generates
a better quality route.
• Better Route—generates an even better quality route, but uses a
longer calculation time.
• Best Route—generates the most optimal route, but takes the
longest time to calculate.
Calculate Routes for—sets route calculation for the particular
vehicle you are operating to optimize the route for your vehicle type,
some roads have vehicle-based restrictions.
Avoid—allows you to avoid certain road types and maneuvers on
your route. The unit uses these road types only if alternative routes
take you too far out of your way or if no other road is available.
Custom Avoids—allows you to enter specific areas and roads that
you would like to avoid in your navigation. Refer to page 67 for
information on creating custom avoids.
GPSMAP 496 Owner’s Manual117
Main Menu > Setup Tab
Custom Road Prefs—allows you to avoid or use Major, Medium,
and Minor roads using a slider scale. This is especially nice if you
want to avoid major highways, for example.
Next Turn—turns the Next Turn window Off, or opens the window
when you hold Direct To , opens automatically (Automatically
Only), or Both.
Guidance Sub Tab
Timers Sub Tab
To open the Guidance sub tab, press Menu twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Guidance
from the row of tabs along the top of the page.
To open the Timers sub tab, press Menu twice, select Setup from
the vertical tab list, and Timers from the row of tabs along the top.
Timers Sub Tab
Guidance Sub Tab
Off-Route Recalculation—allows you to set whether the unit
prompts you when it is recalculating your route (Prompted), or
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.
118
User—allows you to set the timer to Count Up or Count Down.
You can also Reset the timer and turn it Off.
Marine—shows on the Compass Page in Marine Mode. See page
94.
Fuel Tank—allows you to set a reminder for switching fuel tanks.
The reminder message repeats at the specified interval after the
beginning of each trip.
GPSMAP 496 Owner’s Manual
Main Menu > Setup Tab
Since Midnight—allows you to view the time the unit has been
turned on since midnight. This resets if you restore All Unit
Defaults from the System tab.
If the incorrect date is shown, press Menu, highlight Set Date, and
press Enter. Enter the current year. The GPSMAP 496 uses this
information when gathering satellite data to show the correct date.
Time Sub Tab
Units Sub Tab
To open the Time sub tab, press Menu 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.
Distance and Speed—select the unit to show your speed and
distance traveled.
The Time sub tab allows you to set the time format and time zone.
You can also set the unit to conform to Daylight Saving Time. The
current time and date is shown at the bottom of the page.
The Units sub tab allows you to customize measurement units for
the entire system. To open the Units sub tab, press Menu twice to
open the Main Menu. Select Setup from the vertical tab list. Then
select Units from the row of tabs along the top of the page.
Direction Display—select the unit to show your direction. Mils is a
unit of angle measurement used in military settings, in which 17.78
mils equal one degree.
Temperature—select the unit to show the temperature.
Altitude—select the unit to show your altitude.
Depth—select the unit to show the depth.
Time Sub Tab
Time Zone—allows you to choose your correct time zone so the
GPSMAP 496 shows the correct local time. Select Other to enter a
UTC Offset.
Vertical Speed—select the unit to show your vertical speed.
Pressure—select the unit to show the pressure.
GPSMAP 496 Owner’s Manual119
Main Menu > Setup Tab
Location Sub Tab
Selecting a Different Heading Reference
Location Format Sub Tab
You can select from Auto Mag Var, True, Grid, and User Mag
Var. Auto Mag Var provides magnetic north heading references
that are automatically determined from your current location. True
provides headings based on a true north reference. Grid provides
headings based on a grid north reference (and is used in conjunction
with the grid position formats).
Map Datum Sub Tab
User Mag Var allows you to specify the magnetic variation at your
current location and provides magnetic north heading references
based on the variation you enter. Enter the magnetic variation of
your current location in the Magnetic Variation field if you have
selected User Mag Var for the heading.
Refer to the “Appendix” of this guide for more information about
location formats and map datums. Also visit the National Imagery
and Mapping Agency at www.nima.mil for more information on
grids and datums.
Changing the Location Format coordinates the system in which
a given location reading is shown. The default format is latitude
and longitude in degrees, minutes, and thousandths of a minute
(hddd°mm.mmm).
Datums are used to describe geographic locations for surveying,
mapping, and navigation and are not actual maps built in the unit.
The default setting is WGS 84. The unit automatically chooses the
best datum based on your chosen position format.
120
WARNING: Selecting the wrong map datum can result in
substantial location errors. You should only change the position
format if you are using a map or chart that specifies a different
position format or map datum or want to use a format you are
familiar with.When in doubt, use the default WGS 84 datum for
best overall performance.
WARNING: If you select User Mag Var, the unit does not
automatically calculate and update the magnetic variation at
your present location. You must update the magnetic variation as
your location changes. Failure to update this setting can result in
substantial differences between the information shown on your
unit and external references, such as a magnetic compass.
GPSMAP 496 Owner’s Manual
Main Menu > Setup Tab
Welcome Sub Tab
The Welcome sub tab allows you to enter information, such as your
name and address, that the unit can show when it is turned on. This
feature can be helpful if your unit is ever misplaced.
To open the Welcome sub tab, press Menu twice to open the Main
Menu. Select Setup from the vertical tab list. Then select Welcome
from the row of tabs along the top of the page.
Interface Sub Tab
The Interface sub tab controls the input/output format used when
connecting your unit to external devices. To open the Interface sub
tab, press Menu twice to open the Main Menu. Select Setup from
the vertical tab list. Highlight and select the Serial Data Format you
want.
Interface Sub Tab
Welcome Sub Tab
Enter the information in the fields. You do not need to enter
information in every field.
To show this information at start up, highlight the box next to Show
at Power-up. Press Enter to place a check mark in the box. To
hide the welcome information at start up, remove the check mark
from the box.
Serial Data Format—sets the data format to one of the following:
• Garmin Data Transfer—the proprietary format used to
exchange data with a PC or another Garmin GPSMAP 496.
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.
GPSMAP 496 Owner’s Manual121
Main Menu > Setup Tab
• GARMIN DGPS—used to connect the GPSMAP 496 with a
Garmin DGPS beacon receiver.
• Garmin Remote Sonar—supports the input/output of a Garmin
remote sonar device.
• 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.
• Aviation In—the proprietary format used for connection to a
Garmin panel-mounted GPS receiver. Allows the GPSMAP 496
to show a Go To or route selected on the panel-mounted GPS
receiver. This eliminates the need to enter the destination on both
units.
• Aviation In/NMEA & VHF Out—receives aviation data
and transmits out both NMEA data, at 9600 baud, and VHF
frequency tuning information to a Garmin Nav/Comm radio. See
page 147.
• TIS In—receives TIS data from a Garmin Mode S transponder.
See page 147.
• TIS In/NMEA & VHF Out—receives TIS data and transmits
out both NMEA data, at 9600 baud, and VHF frequency tuning
information to a Garmin Nav/Comm radio. See page 147.
• RTCM In—allows Differential GPS (DGPS) input using a
standard RTCM format.
122
• 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, location, and velocity.
• Text Out—allows the unit to output simple text data that
includes, data, time, location, and velocity. The Baud can be set
to 1200, 2400, 4800, or 9600.
• None—provides no interfacing capabilities.
If you select GARMIN DGPS or RTCM In/NMEA Out format,
you can control a differential beacon receiver directly from your
GPSMAP 496 using the Interface sub tab. You can have the unit
automatically scan for the DGPS beacon signal, or you can enter
the beacon frequency and bit rate on the unit, and the information is
used to tune the beacon receiver. If you use a DGPS receiver, WAAS
capability is automatically turned off.
GPSMAP 496 Owner’s Manual
Main Menu > 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 ROCKER to highlight the Beacon field and press Enter.
2. Highlight Scan, and press Enter. The numbers in the
Frequency field change as the unit scans from 284 kHz to 325
kHz, 200 bit rate, then 100, at 6 second intervals.
Highlight Scan
and press
Enter
Shows the
status of the
scan
The Status field shows one of the following:
• Tuning—the unit is attempting to tune to the specified frequency
and bit rate.
• Scanning—the unit is automatically scanning through the
frequencies and bit rates.
• Receiving—the unit is receiving DGPS signal and ready for
operation.
• Check Wiring—the unit is not making connection with DGPS
receiver.
To restart the scan:
1. Press Menu.
2. Highlight Restart Scan, and press Enter.
Interface tab of the Setup tab with GARMIN DGPS selected
GPSMAP 496 Owner’s Manual
123
Main Menu > 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 ROCKER to highlight the Beacon field, and press Enter.
2. Highlight User, and press Enter.
3. Highlight the Frequency or Bit Rate field, press Enter, and
enter a frequency or bit rate. Press Enter when done.
When the unit is receiving a DGPS signal, the SNR (Signal to Noise
Ratio) and Distance fields show data. The SNR range is 0 dB to 30
dB, with 30 being the best. The Distance may or may not show data,
based on the signal being broadcast from the DGPS site.
sentences at 1-second intervals.
To access the Advanced NMEA Output Setup:
1. Press Menu twice to open the Main Menu.
2. Use the ROCKER to select Setup from the vertical tab list.
3. Select Interface from the row of tabs along the top.
4. Highlight the field below Serial Data Format. Press Enter.
5. Select NMEA In/NMEA Out. Press Enter.
6. Press Menu to open the options menu. Select Advanced NMEA
Setup, and press Enter.
The DGPS beacon transmitters are operated by the United States
Coast Guard (or similar government agency in other countries),
which is responsible for their accuracy and maintenance. For DGPS
transmitter problems or to find the most updated list of frequencies
and coverage areas, contact your local USCG or see their Web site
(www.navcen.uscg.mil).
Advanced NMEA Output Setup
If you are going to interface the GPSMAP 496 with another piece of
equipment (such as a radar or autopilot), the unit needs to be set to
output NMEA data. The NMEA data transmission can be customized
to keep the output rate at two seconds. If too many NMEA sentences
are selected the unit can take longer than two seconds to update. You
can also set the rate to Fast to output a minimum number of NMEA
124
Advanced NMEA Output Setup
The Advanced NMEA Output Setup Page allows you to set the
output rate, change the precision of the Lat/Lon minutes, set
Waypoint IDs to names or numbers, as well as turn on and off the
GPS status, the GARMIN Proprietary sentences, and Waypoint/
Route (WPL, RTE).
GPSMAP 496 Owner’s Manual
Main Menu > Setup Tab
GPSMAP 496 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, PGRMH
GPSMAP 496 Owner’s Manual125
Using XM Weather > Viewing and Finding XM WX Weather
Using XM WX Weather
This section describes how to use XM WX Weather with your
GPSMAP 496. You must have a GXM 30A antenna plugged into the
USB port on the back of the unit to receive the XM signal. If you do
not have a subscription to XM WX Weather, the features described
in this section work only when the GPSMAP 496 is in Simulator
Mode (see page 11).
Note: You must have a subscription to XM WX Weather to use
features described in this section. For more information about
subscribing to XM WX Weather, see page 180.
You can view XM WX Weather on your GPSMAP 496 in one of
three ways:
• To view all weather information on the map, Use the Map Page.
• To view a specific weather feature such as NEXRAD Radar or
Storm Cells, for example, you can use the Weather tab on the
Main Menu. For more information, see page 102.
• To view current weather conditions and forecast information for
your current location or a specific location, use the Weather Data
option on the Find menu. For more information, see page 133.
126
CAUTION: NEXRAD weather data is to be used for long-range
planning purposes only. Due to inherent delays and relative age
of the data that can be experienced, NEXRAD weather data
cannot be used for short-range avoidance of weather.
Viewing XM WX Weather
From the Map Page, you can turn weather information on or off.
To turn XM Weather on or off on the Map Page:
Press and hold MENU/Wx to toggle XM Weather on or off.
OR
Press MENU, select Hide (Show) Weather, and then press
ENTER.
Map Page with XM WX Weather turned on
Note: XM Weather data is not saved between power cycles in
the unit . If the GPSMAP 496 is turned off, the unit must reload
the data.
GPSMAP 496 Owner’s Manual
Using XM Weather > Setting XM WX Weather Options
Setting XM WX Weather Options
Use the options menu on the Map Page to adjust the way weather
items appear on the Map Page. Four tabs—Weather, Avtn Wx, Srfc
Wx, and Mrn Wx—allow you to adjust what weather items appear
on the Map Page, and the zoom range at which they appear. For
detailed information about specific weather features, see the
GXM 30/30A Owner’s Manual.
To set up weather options on the Map Page:
1. From the Map Page, press Menu to open the options menu.
2. Highlight Set Up Map, and press Enter.
You can view a specific weather feature, such as NEXRAD Radar
or Storm cells, through the Weather Explorer tab on the Main Menu.
For more information, see page 102.
Map Page Options Menu
3. Press left or right on the ROCKER to highlight the Weather, Avtn
Wx, Srfc Wx, or Mrn Wx tab.
4. Press up or down on the ROCKER to highlight the field you want
to change, and press Enter.
5. Press page or Quit to exit.
GPSMAP 496 Owner’s Manual127
Using XM Weather > Setting XM WX Weather Options
Weather Explorer Tab
Use the Weather Explorer tab on the Map Setup tab on the Map Page
to turn XM WX Weather data on or off, and to set the zoom range at
which the information first appears on the Map Page.
Avtn Wx Tab
Use the Avtn Wx tab to set the zoom range at which aviation
weather information first appears on the Map Page.
Avtn Wx Tab
Weather Explorer tab
Weather Data—toggles XM WX Weather data on or off on the Map
Page.
METAR, AIRMET, SIGMET—sets the zoom range at which each
feature first appears on-screen. Select Auto, Off, or 20 ft to 800 nm.
NEXRAD Radar, Satellite Mosaic, Lightning, Storm Cells,
Hurricanes—sets the zoom range at which the feature first appears
on-screen. Select Auto, Off, or 20 ft to 800 nm.
128
GPSMAP 496 Owner’s Manual
Using XM Weather > Setting XM WX Weather Options
Srfc Wx Tab
Use the Srfc Wx tab to set the zoom range at which surface weather
information first appears on the Map Page.
Srfc Wx Tab
Surface Winds, Surface Pressure, Fronts, Visibility, County
Warnings—sets the zoom range at which each feature first appears
on-screen. Select Auto, Off, or 20 ft to 800 nm.
Mrn Wx Tab
Use the Mrn Wx tab on the Map Page Options to set up marine
weather options.
Mrn Wx Tab
Water Temperature, Wave Period, Wave Direction, Wave
Height, Marine Warnings—sets the zoom range at which each
feature first appears on-screen. Select Auto, Off, or 20 ft to 800 nm.
GPSMAP 496 Owner’s Manual129
Using XM Weather > Using the Weather Tab
Using the Weather Tab
Use the Weather tab to view individual weather items without
turning all other weather features on or off. For example, you can
select Storm Cells to view only storm cells on the Map window
that appears on the Weather tab. When you close the Main Menu
and return to the Map Page, all of your previously selected weather
features still appear on the Map Page.
Based on which mode you are in, different options might appear.
Use the In and Out keys to zoom in or out on the map.
Weather information type
3. Press right on the ROCKER to highlight the Weather
Information Type field.
4. Press up or down on the ROCKER to select (scroll through) the
weather information type you want to view. The map refreshes to
show only the selected information type.
From the Weather tab, you can view the current conditions or
forecast on the map for the next 12, 24, 36, or 48 hours.
To view the forecast map:
1. In the Weather Information Type field, press up or down on the
ROCKER to highlight Forecast. The Map window shows the
forecast on in the Map window.
Map
window
Weather Explorer tab with
Storm Cells
To view a specific XM WX Weather Information Type:
1. Press MENU twice to show the Main Menu.
2. Use the ROCKER to highlight the Weather Explorer tab.
130
Age of the
weather report
Forecast Map
2. Press right on the ROCKER to highlight the field to the right of
Forecast, and press ENTER to display a list of forecast options.
GPSMAP 496 Owner’s Manual
Using XM Weather > Using the Weather Tab
3. Highlight the forecast you want to view—Current, 12 Hour, 24
Hour, 36 Hour, or 48 Hour, and press ENTER. The Map window
on the Weather Explorer tab is updated with forecast information
for the time you selected.
The age of the weather report appears in the bottom-left corner of
the Map window on the Weather Explorer tab.
To pan the map:
Press and hold the MENU/Wx key, or press MENU, highlight
Show Map Pointer, and press ENTER. The panning arrow
appears so you can pan the map to view other map areas.
Weather Options
Use the options menu on the Weather Explorer tab to select weather
options for the Map window on the Weather Explorer tab.
Animate Weather (Stop Animation)—animates NEXRAD Radar
and Satellite Mosaic weather. When selected, a series of frames
appears, each displaying a different time in the lower left-corner of
the map. Up to six frames appear, beginning with the oldest to the
most current weather data.
Show Map Pointer—allows you to switch from pan mode to
pointer mode and display the map pointer in the map area so you can
pan the map.
Weather Legend—shows the color legend for Radar, Fronts,
METARs, County Warnings, and Other features. Press right or left
on the ROCKER to view each weather legend.
To select weather options:
1. Press MENU twice to open the Main Menu.
2. Highlight the Weather Explorer tab, and press MENU.
Declutter On (Off)—allows you to toggle unwanted weather items
on or off on the Map window.
Weather Legend
GPSMAP 496 Owner’s Manual
131
Using XM Weather > Using the Weather Tab
Viewing Additional XM WX Weather Information
The XM Tab contains the Information sub tab. Use the Information
sub tab to view the radio ID, service level information, and weather
products available on your XM subscription.
Accessing GXM 30A Antenna Information
To view information about your GXM 30A antenna:
1. From any page, press MENU twice to show the Main Menu.
2. Press up or down on the ROCKER to select the XM tab.
3. Press right on the ROCKER to select the Information sub tab.
4. Press MENU.
5. With Antenna Information highlighted, press ENTER. A window
appears displaying the software version loaded to your GXM
antenna.
Information Sub Tab
The Information sub tab contains the following information:
Radio ID—contains the eight-digit ID number of the radio built into
the GXM 30A. This is the number to provide to XM to activate your
XM subscription.
Service Level—shows the XM WX Weather subscription plan you
purchased.
6. Press ENTER to close the window.
Weather Products—shows a list of all weather features you can
access based on your subscription plan. Shows age of weather data
in minutes.
132
GPSMAP 496 Owner’s Manual
Using XM Weather > Finding Weather Information
Finding Weather Information
You can use the Find menu to access weather information for your
current location or from another location on the map. By selecting
the Weather Data option on the Find menu, you can view the current
conditions, forecast information, sea surface conditions, and weather
bulletins. For more information about the Find menu, see “Finding
an Item” beginning on page 58.
To find weather information for your current location:
1. From any page, press FIND.
2. Select Weather Data, and press ENTER. The Weather From
Current Location Page appears.
Weather From Current Location
GPSMAP 496 Owner’s Manual
3. Highlight the Forecast tab to view the weather forecast for your
current location.
Forecast high
temperature
Chance of
precipitation
Forecast low
temperature
Weather Forecast
4. Highlight the Sea Surface tab to view sea surface information.
Sea Surface Information
133
Using XM Weather > Finding Weather Information
5. Highlight the Bulletin tab to view marine weather bulletins.
You can find weather forecast information for a different location.
To find weather data for a different location:
1. Press MENU on the Weather From Current Location Page.
2. With Near Other highlighted, press ENTER.
Marine Weather Bulletins
6. Highlight a weather bulletin and press ENTER to view the full text
of the marine weather bulletin.
3. Move the map pointer to a different location, and press ENTER.
The Weather From (New Location) Page appears with weather
information for the selected location.
4. Press MENU, highlight Near Current Location, and then press
ENTER to return to the forecast for your current location.
Full Text Marine Weather Bulletin
134
GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Showing Sonar on the Map Page
Setting up and Using Sonar
This section covers the additional sonar options for the
GPSMAP 496 when used in conjunction with a GSD 20 or GSD 21
Sounder Module. Read the GSD 20/GSD 21 Installation Instructions
to properly install the sounder module. When you turn on your
GPSMAP 496, the GSD 20/GSD 21 automatically turns on.
3. Press Menu. Use the ROCKER to highlight Set up Page
Layout, and press Enter.
4. Highlight Map with Sonar, and press Enter.
Note: You MUST have a GSD 20 or GSD 21 installed and
connected to your GPSMAP 496 to use the sonar features.
The Sonar Page is added to the end of the page sequence when you
are in Marine Mode. To view the Sonar Page, press Page or Quit
repeatedly until it is shown.
Showing Sonar on the Map Page
You can change the layout of the Map Page to show a split screen to
show the sonar and Map Page. You must be in Marine Mode to use
the sonar feature.
To show the Sonar Page on the Map Page:
1. Press and hold Page. Highlight Marine, and press Enter.
2. Press Page or Quit to show the Map Page.
GPSMAP 496 Owner’s Manual
Map Page with Split Screen
To resize the Map Page sonar split screen:
1. After displaying the Sonar and Map Page together in the split
screen, as described in the previous steps, press Menu.
2. Highlight Size Split, and press Enter.
3. Use the ROCKER to move the vertical double-arrow right or left
until the screen is divided how you want it.
4. Press Enter to complete the size split.
5. To stop resizing the screen, simply press Quit. You can also
press Menu, highlight Stop Resizing, and press Enter to stop
resizing the screen and retain the previous split setting.
135
Setting up and Using Sonar > Using the Sonar Page
Using the Sonar Page
When combined with a GSD 20 or GSD 21 Sounder Module, your
GPSMAP 496 becomes a powerful fishfinder/flasher with the Sonar
Page. If a GSD 20 or GSD 21 is attached, but the unit does not
detect a transducer, a “Sonar Turned Off” message appears across
the Sonar Page. If a GSD 20 or GSD 21 is not attached, the Sonar
Page only appears when the unit is in Simulator Mode.
The middle of the page contains a right-to-left moving sonar image
of the water beneath your boat. Items appear as they pass under your
transducer. Those items on the right side of the screen are closer to
you than those on the left. Along the right side of the screen is an
adjustable scale that reflects the depth of the area being shown. The
top-left corner shows the Adjustment Option, the depth, and the
water temperature.
The sonar returns show as red (strongest), then orange (strong),
yellow (medium), green (weaker), and blue (weakest). The Fish
Symbols option allows you to view the actual sonar data, a fish
symbol or a combination of both. When the unit is set to Dual, the
appearance of the fish symbols changes. Fish symbols from the
center of the beam (200 kHz) are solid (or narrow arches), but the
returns from the edges of the beam (50 kHz) are hollow (or wide
arches).
The Sonar Page can also be set to show a split screen view of a
zoomed portion of the sonar, bottom lock (screen scaled from the
bottom up), or a combination of these options. For example, you
can choose to show dual frequency at a 2X zoom (Dual 2X) on one
half and normal range dual frequency (Dual) on the other half. The
current display mode is shown at the bottom of each sonar screen.
Sonar Page
136
GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Using the Sonar Page
Adjusting the Sonar Page
The Adjustment Menu allows direct access to the settings and
features most commonly used on the Sonar Page. There are 10 main
adjustment options available: Range, Zoom, View, Gain, Target
Level, Whiteline, Frequency, Depth Line, Noise Reject and Scroll.
Use the ROCKER and Enter keys to make all adjustments. The
currently selected option appears in the upper left corner.
To select an adjustment option:
Use one of the following methods to select an adjustment option:
• Press the ROCKER right or left to scroll through the
adjustment options. When the adjustment option is shown,
press Enter.
• Press Menu, highlight Adjustments, and press Enter. Use
the ROCKER to highlight the adjustment, and press Enter.
When you have selected an adjustment option, press the ROCKER
up or down to change the setting.
Adjustment Options
Sonar Adjustments
Scroll—adjusts the rate that the sonar screen scrolls from right to
left. If you are sitting still or the sonar screen is moving too fast,
slow the scroll rate or pause the scrolling.
Range—sets the depth range used for viewing. The unit can be set
to automatically track the bottom or set to a user-specified depth
range.
You can also press Menu, and highlight the shortcut setting to
quickly change to commonly used settings/values.
Press Enter to accept the new setting (or press Quit to cancel)
and return to the Sonar Page.
GPSMAP 496 Owner’s Manual
137
Setting up and Using Sonar > Using the Sonar Page
Zoom—used to quickly select a zoom scale or to split the screen.
When a scale other than No Zoom is selected, the Adjustment Menu
shows a new selection labeled View or Span. The Zoom function is
divided into six levels:
• 2X Split—shows two reduced-size sonar pictures at the same
time. The right half of the screen shows the complete sonar
picture at its original scale. The left half shows a portion of the
original picture at 1/2 depth scale.
• 2X Zoom—shows the 2X zoomed picture on the full screen.
• 4X Split—shows two reduced pictures, the right at the original
depth scale and the left at 1/4 the original depth scale.
• 4X Zoom—shows the 4X zoomed picture on the full screen.
• Btm (Bottom) Split—shows two reduced pictures, the right at
the original depth scale and the left showing sonar returns from
the bottom up. All target depths read as a distance from the
bottom.
• Btm (Bottom) Lock—shows returns from the bottom up on the
full screen.
138
Note: Quickly zoom in and out of the Sonar Page by pressing
the In and Out keys. Stop the zoom function by pressing the
Out key until the No Zoom setting appears.
View/Span—available when a Zoom scale other than No Zoom is
selected. The View or Span setting is used to change the viewing range
of a zoomed screen. If the screen is 2X or 4X split, only the zoomed
portion on the left side of the screen is affected by the change. If the
screen is Bottom Split or Bottom Lock, Span adjusts how far off the
bottom the unit shows data.
Gain—allows you to control the sensitivity of the unit’s receiver,
which provides flexibility in what is shown. To see more detail,
increase the receiver sensitivity by selecting a higher gain. If there is
too much detail or if the screen is cluttered, select a lower gain.
Target Level—adjusts which colors are used to show sonar
information. A Color Bar appears on the right side of the screen as
you adjust this setting. A higher percentage results in more strongsignaled colors shown on the sonar screen. A lower percentage
results in more weaker-signaled colors shown on the sonar screen.
This setting does not increase or decrease the unit Gain.
Whiteline—controls how the unit shows information about the
bottom type (hard or soft). With the Whiteline Off, the bottom return
shows as red. Set Whiteline at Normal or 1–100% to determine
bottom hardness. See page 145 for more information.
Frequency—allows you to choose a transducer frequency.
Frequency refers to the “pitch” of the sound that the transducer
sends and receives.
GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Using the Sonar Page
Depth Line—adds a horizontal depth line across the screen that is
used to measure the depth of underwater objects. The depth of the
line appears in a box on the right side of the line. Press up or down
on the ROCKER to move the line on the Sonar Page.
Noise Reject—helps filter unwanted noise from the Sonar Page.
The Noise Reject can be turned Off, set to Normal (automatically
adjusts for optimum viewing) or to a fixed 1–100% setting. When
setting the Noise Reject, remember that a higher noise rejection
setting is less likely to show fish or structures.
Resizing the Split Screen
You can adjust the way the split screen is shown. This option is only
available when a zoom scale other than No Zoom is selected.
To resize the Sonar Page split screen:
1. From the Sonar Page split screen, press Menu.
2. Using the ROCKER , highlight Size Split, and press Enter.
3. Move the horizontal double-arrow left or right using the ROCKER
until the vertical width line shows, then press Enter.
4. If you want to cancel this operation, press Quit or press Menu,
highlight Stop Resizing, and press Enter.
GPSMAP 496 Owner’s Manual
Using the Pointer on the Sonar Page
You can show the pointer (arrow) to reference sonar items and
mark underwater waypoints. This makes it easier to find and use an
object such as a stump for a future fishing location. When using this
feature, the Sonar Page pauses. The depth continues to update while
the screen pauses, but the unit does not show any new sonar data
until the Sonar Page resumes scrolling.
To mark an underwater waypoint:
1. From the Sonar Page, press Menu, highlight Show Pointer, and
press Enter.
2. Use the ROCKER to move the pointer to the location you want to
mark. Press Enter. The New Map Waypoint Page appears.
3. To change the name, symbol, or depth, highlight the appropriate
field and press Enter. Make your changes, and press Enter
when done.
4. When finished, highlight OK, and press Enter.
5. To return to the standard Sonar Page, press Quit; or press
Menu, highlight Hide Pointer, and press Enter.
139
Setting up and Using Sonar > Setting up the Sonar Page
Setting Up the Sonar Page
Use the Sonar tab in the Main Menu to set up the Sonar Page. Press
Menu two times to open the Main Menu. Select Sonar from the
vertical row of tabs on the left, then select Setup from the row of
tabs along the top of the screen.
Depth Number—select how efficient the digital depth update rate
is. Fast Sonar update updates quicker and is recommended for lownoise water deeper than 50 feet. Auto is best for shallow water or
high-noise areas, has a slower screen update, and is best used if you
travel a wide variety of depths.
If the unit is unable to track the bottom for any reason, the digits in
the depth window flash on and off to alert you that the unit is not
tracking the bottom.
Sonar Tab of the Main Menu
Fish Symbols—select how the Sonar Page shows underwater targets
and background information. If you select Off, the unit shows all
of the available information about the underwater environment. If
you select a fish symbol, the Sonar Page shows only the information
related to that symbol.
Water Type—select the water type in which you are boating. Since
sound waves travel through Fresh and Salt water at different rates, it
is necessary to select the Water Type to ensure accurate readings on
the unit.
140
Map Split Sonar Detail—select how much detail is shown on the
Map Page with the sonar shown. Full Range shows data using the
Range setting of the Sonar Page, regardless of Zoom or Bottom
Lock. Maximum Detail shows any Zoom or Bottom Lock data
from the Sonar Page.
Keel Offset—enter the surface reading for the depth of a keel. This
makes it possible to measure depth from the bottom of your keel
instead of from the transducer’s location. Enter a positive number
to offset for a keel. It is also possible to enter a negative number to
compensate for a large vessel that draws several feet of water. The
Keel Offset is reflected in the depth reading.
Transducer—select the type of transducer that you are using. If you
are using a speed-capable transducer/sensor, select Temp, Spd.
GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Setting up the Sonar Page
Calibrating the Water Speed
If you select Temp, Spd is for the Transducer option on the Sonar
Setup tab, you also need to calibrate the water speed to ensure that
the Water Speed shown on your unit is accurate. The calibration
should take place in water having little or no current.
The unit automatically uses the GPS ground speed, if it is available,
for comparison on the calibration. If a GPS ground speed is not
available, use either your boat’s speedometer reading (not always
accurate) or a stopwatch to determine your speed over a certain
distance. To find out your speed, divide the distance by the time.
To calibrate the water speed:
1. From the Sonar tab, Setup sub tab, use the ROCKER to highlight
Calibrate Water Speed, and press Enter.
2. Bring the boat to a cruising speed. Both the top ground and
uncalibrated water speeds are shown at the bottom of the
calibration window. Note your top speed, then stop the boat, and
press Enter.
Calibrating the Water Speed
3. By default, the top ground speed is automatically shown. If a
ground speed is not available, the top uncalibrated water speed
is used instead. If the new speed is correct, highlight OK, and
press Enter.
If you want to manually enter a calibration, press Enter while
the speed is highlighted, enter a new speed, and press Enter.
If the boat is not moving fast enough or the speed sensor is not
outputting a speed, “Boat Is Not Moving Fast Enough To Calibrate”
shows at the bottom of the screen. Check that the speed sensor
wheel is moving or safely increase boat speed. If there is a problem
with the speed sensor or if a speed sensor is not installed, “Water
Speed Sensor Is Not Working” appears at the bottom of the screen.
Check connections of speed sensor cables.
GPSMAP 496 Owner’s Manual141
Setting up and Using Sonar > Setting up the Sonar Page
Setting Up the Sonar Display
You can set up how the sonar information is shown on the screen.
Press Menu two times to open the Main Menu. Select Sonar from
the vertical row of tabs on the left, then select Display from the row
of tabs along the top of the screen.
Flasher—select On to show a graphic Flasher representation on
the far right side of the sonar screen. This graphic Flasher shows
structure and bottom returns much the same as a true Flasher.
Temperature Graph—select On to show a temperature graph along
the bottom of the Sonar Page.
Background Color—select the color for the Sonar Page and the
sonar on the Map split.
Graphic Flasher
Sonar Display Setup Tab
Scale—select how and where you want the depth scale shown.
Color Bar—select On to show a gradient scale of the current
Target Level setting on the Sonar Setup tab.
White
Background
Temperature
Graph
Color Bar
Depth in
corners
Sonar Page with the Sonar Page Settings Changed
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GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Understanding Sonar
Understanding Sonar
The transducer mounted on your vessel transmits sound waves
toward the bottom of a lake, stream, or seabed in a cone-shaped
pattern. When a transmitted sound wave strikes an underwater
object—such as the bottom, a piece of structure, or a fish—sound is
reflected back to the transducer. The transducer collects the reflected
sound waves and sends the data to the GPSMAP 496 to be processed
and shown. The underwater data is shown on the Sonar screen in the
order that it is returned: first returned is the first on the screen.
Understanding the Sonar Display
One of the first things to understand about sonar is that the
transducer sends a beam down to the bottom of the water, much like
the beam of a flashlight. The beam starts small near your vessel and
expands as it gets to the bottom. Refer to “Transducer Coverage” for
more detailed information.
The Sonar Page does not show a three-dimensional representation of
the underwater environment; the screen is in two-dimensions, much
like if you took a picture of an aquarium. Only the depth of the item
in the water is shown. The Sonar Page does not show you where an
item is located horizontally in the water, as shown in the drawings
below. The fish is not directly above the tree in reality, but it can
look like it is on the Sonar Page.
Fish
Sonar Page
1'
Generally speaking, if the only thing between the transducer and
the bottom is water, the first strong return comes from the bottom
directly below the transducer and sets the bottom level. Weaker,
secondary returns provide the detailed data. Stronger returns appear
on the screen in darker colors, with red being the strongest return.
GPSMAP 496 Owner’s Manual
10'
Tree
Tree
20'
Aerial View of the Water
Sonar Page
143
Setting up and Using Sonar > Understanding Sonar
Transducer Coverage
The area covered by the transmitted sound waves is determined by
the cone angle of the transducer and the water depth. The wide cone
angles (40°), associated with low frequencies (50 kHz) provide a
Coverage
large coverage area for finding fish within a coverage width that
Diameter
is approximately 2/3 of the water depth. However, this also means
that wide cone angles produce less bottom detail and resolution. As
shown in the drawing on the near right, the 40° cone angle produces
a coverage area of approximately a 20-foot diameter circle at a
30-foot depth.
The narrow cone angles (10°) associated with the high frequencies
(200 kHz) provide better bottom resolution and crisper detail, but
cannot show a large coverage area for finding fish. The 10° cone
angle provides a coverage width that is approximately 1/5 of the
water depth. As shown in the drawing on the far right, the 10° cone
angle produces a coverage area of approximately a 6-foot diameter
circle at a 30-foot depth.
Depth
40° Cone Angle (50 kHz)
Coverage
Diameter
Depth
10° Cone Angle (200 kHz)
Dual frequency mode combines both frequencies to get the best
coverage area and contour/depth readings.
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GPSMAP 496 Owner’s Manual
Setting up and Using Sonar > Understanding Sonar
Whiteline
The GSD 20 or GSD 21 Sounder Module can help you determine
whether the bottom is hard or soft. When the sonar sound waves are
reflected back by the bottom, a hard bottom returns a stronger signal
than a soft bottom. A thin whiteline indicates a softer bottom, while
a thick whiteline indicates a harder bottom. Normally, a red line
is used to show the point where water meets the bottom. This line
follows the bottom contour, along with any significant objects lying
on the bottom. The unit uses the whiteline function to make the
bottom layer information easier to distinguish.
Thermoclines
A rough definition of a thermocline is a break in water where
the water temperature changes faster than the water above it.
Thermoclines are shown as the weakest colors.
One of the unique features offered by Garmin is See-Thru®
technology, which allows the GPSMAP 496 to hear both weak and
strong signals simultaneously so as to identify fish returns under
the toughest conditions, such as suspended in thermoclines or even
hiding near structures. See-Thru technology allows the GSD 20 or
GSD 21 Sounder Module to see through thermoclines and helps
locate fish where they live.
Thick Whiteline:
Hard bottom
Whiteline On
Whiteline Off
Thermocline
GPSMAP 496 Owner’s Manual145
Setting up and Using Sonar > Viewing the Sonar Temperature Tab
Viewing the Sonar Temperature Tab
Note: You must be receiving proper sonar data from another
device, such as a Garmin GSD 20 or GSD 21 Sounder Module,
to view temperature information.
The Temperature sub tab provides a visual graph of water
temperature changes over a period of time. The graph reads from
right to left, so that the most recent temperature measured is shown
on the far right side of the graph. The dotted lines within the graph
indicate intervals in the temperature scale and the duration of time.
Note: Select Temp for the Transducer type in the Sonar
Setup. See “Setting Up the Sonar Page” on page 140 for more
information.
Press Menu twice to open the Main Menu. Select Sonar from the
vertical row of tabs on the left, then select Temperature from the
row of tabs along the top of the screen.
Changing the Temperature Screen
The graph adjusts and shown the temperatures changes according to
the Temperature Scale and Time Duration settings.
Temperature Scale—select the degree span from the list. Select
Auto to have the unit automatically determine the best range, or
select a span of 2, 4, 6, 8 or 10 degrees.
Time Duration—set how fast or slow the temperature log scrolls:
a shorter the time duration means a faster temperature log scroll.
Select a duration from 1 minute to 2.5 hours.
Reset the Temperature Graph
To reset the scale range for the temperature graph, press Menu,
highlight Reset Auto Scale, and press Enter. This is useful
when the scale spans a large range due to extreme temperature
changes. You can only reset the scale when you select Auto for the
Temperature Scale.
To restore the temperature graph to defaults, press Menu, highlight
Restore Default, and press Enter.
Temperature Tab
146
GPSMAP 496 Owner’s Manual
TIS > Traffic Information Service
TIS
(Traffic Information Service)
TIS provides a graphic representation of traffic advisory information
in the cockpit for non-TCAS equipped aircraft. TIS is a groundbased service providing relative location of all ATCRBS (Air Traffic
Control Radar Beacon System) Mode A and Mode C transponderequipped aircraft within a specified service volume. The TIS ground
sensor uses real-time track reports to generate traffic notification.
TIS Traffic is available to aircraft equipped with a Mode S Data
Link such as the Garmin GTX 330 Transponder. TIS Traffic from
a GTX 330 Transponder can then be shown on the GPSMAP 496.
Surveillance data includes all transponder-equipped aircraft within
the coverage volume. Aircraft without an operating transponder
are invisible to TIS. TIS shows up to eight traffic targets within
7 nautical miles horizontally from 3,000 feet below to 3,500 feet
above the requesting aircraft. Refer to page 159 for information on
connecting your GPSMAP 496 to a GTX 330 Mode S transponder.
Note: How TCAS differs from TIS—the main difference
between TIS and TCAS is the source of surveillance data. TCAS
uses an airborne interrogator with a half-second update rate,
while TIS uses the terminal Mode S ground interrogator and its
Data Link to provide about a five-second update rate. The range
accuracy of TIS and TCAS is similar.
7.0 nm
3,500 ft
3,000 ft
TIS Coverage Volume (not to scale)
Warning: TIS is NOT intended to be used as a collision
avoidance system and does not relieve the pilot responsibility
to “see and avoid” other aircraft. TIS should not be used for
avoidance maneuvers. TIS is intended only to assist in visual
acquisition of other aircraft in VMC. Avoidance maneuvers are
not recommended, nor authorized, as a direct result of a TIS
alert.
While TIS is a useful aid to visual traffic avoidance, it has some
system limitations that must be fully understood to ensure proper
use. Many of these limitations are inherent in secondary radar
surveillance. In other words, the information provided by TIS
will be no better than that provided to ATC.
GPSMAP 496 Owner’s Manual147
TIS > TIS Limitations
TIS Limitations
TIS is NOT intended to be used as a collision avoidance system
and does not relieve the pilot responsibility to “see and avoid”
other aircraft. TIS should not be used for avoidance maneuvers
during IMC or other times when there is no visual contact with the
intruder aircraft. TIS is intended only to assist in visual acquisition
of other aircraft in VMC. No recommended avoidance maneuvers
are provided for, nor authorized, as a direct result of a TIS display or
TIS advisory.
While TIS is a useful aid to visual traffic avoidance, it has some
system limitations that must be fully understood to ensure proper
use. Many of these limitations are inherent in secondary radar
surveillance. In other words, the information provided by TIS will
be no better than that provided to ATC. TIS only shows aircraft with
operating transponders installed.
TIS relies on surveillance of the Mode S radar, which is a
“secondary surveillance” radar similar to the ATCRBS. TIS
operation may be intermittent during turns or other maneuvering.
TIS is dependent on two-way, “line-of-sight” communications
between the aircraft and the Mode S radar.
148
Whenever the structure of the client aircraft comes between the
transponder antenna (usually located on the underside of the aircraft)
and the ground-based radar antenna, the signal may be temporarily
interrupted. Other limitations and anomalies associated with TIS are
described in the AIM, Section 1-3-5. Refer to page 159 for wiring
information.
Note: Garmin is not responsible for Mode S geographical
coverage. Operation of the ground stations is the responsibility
of the FAA. Refer to the Aeronautical Information Manual for a
Terminal Mode S Radar Site Map covering the U.S.
NOTE: TIS is unavailable at low altitudes in many areas of the
U.S., particularly in mountainous regions. Also, when flying near
the “floor” of radar coverage in a particular area, intruders below
the client aircraft may not be detected by TIS.
GPSMAP 496 Owner’s Manual
TIS > TIS Limitations
TIS information is collected one radar scan prior to the scan during
which the uplink occurs. Therefore, the surveillance information
is approximately 5 seconds old. In order to present the intruders
in a “real time” position, the TIS ground station uses a “predictive
algorithm” in its tracking software. This algorithm uses track
history data to extrapolate intruders to their expected positions
consistent with the time of display in the cockpit. Occasionally,
aircraft maneuvering causes this algorithm to induce errors in the
GPSMAP 496 screen. These errors primarily affect relative bearing
information and traffic target track vector (it will lag); intruder
distance and altitude remains relatively accurate and may be used to
assist in “see and avoid.” Some of the more common examples of
these errors include:
• When client or intruder aircraft maneuvers excessively or
abruptly, the tracking algorithm can report incorrect horizontal
position until the maneuvering aircraft stabilizes.
• When a rapidly closing intruder is on a course that crosses the
client aircraft course at a shallow angle (either overtaking or head
on) and either aircraft abruptly changes course within ¼ nm, TIS
may show the intruder on the opposite side of the client than it
actually is.
•
These are relatively rare occurrences and are corrected in a few
radar scans once the course has stabilized.
Users of TIS can render valuable assistance in the correction
of malfunctions by reporting their observations of undesirable
performance. Reporters should identify the time of observation,
location, type and identity of aircraft, and describe the condition
observed; the type of transponder processor and software in use can
also be useful information. Since TIS performance is monitored
by maintenance personnel rather than ATC, it is suggested that
malfunctions be reported in the following ways:
• By telephone to the nearest Flight Service Station (FSS) facility.
• By FAA Form 8000-7, Safety Improvement Report, a postagepaid card designed for this purpose. These cards can be obtained
at FAA FSSs, General Aviation District Offices, Flight Standards
District Offices, and General Aviation Fixed Based Operations.
GPSMAP 496 Owner’s Manual149
TIS > TIS Symbology
The GPSMAP 496 supports TIS input from a Garmin Mode S
transponder, such as the GTX 330.
To configure TIS input:
1. Press MENU twice. The Main Menu appears.
2. Highlight the Setup tab.
3. Use the ROCKER to select the Interface sub tab.
4. Highlight the Serial Data Format field, and use the ROCKER to
select TIS In.
The status field indicates one of the following messages:
• Waiting For Data—searching for a valid TIS data stream.
• Data Available—receiving TIS data from the transponder.
• Data Unavailable—connection to transponder established, but
TIS service is unavailable.
• Lost Connection—an error occurred or the connection to the
transponder was lost.
150
TIS Symbology
TIS traffic is shown on the GPSMAP 496 according to TCAS
symbology, graphically shown on an alert window, and on the
moving Map Page. A Traffic Advisory (TA) symbol appears as a
solid yellow circle. All other traffic is shown as a hollow white
diamond. Altitude deviation from own aircraft altitude is shown
above the target symbol if traffic is above own aircraft altitude, and
below the symbol if they are below own aircraft altitude. Altitude
trend is shown as an up arrow (>+500 ft/min), down arrow (<-500
ft/min), or no symbol if less than 500 ft/min rate in either direction.
A TIS audio alert is generated whenever the number of Traffic
Advisories on the GPSMAP 496 screen increases from one scan to
the next. Limiting Traffic Advisories only reduces the “nuisance”
alerting due to proximate aircraft. For example, when the first Traffic
Advisories appear on the TIS display, the user is alerted audibly.
So long as a single aircraft remains on the TIS display, no further
audio alert is generated. If a second (or more) aircraft appears on the
screen, a new audio alert is sounded.
GPSMAP 496 Owner’s Manual
TIS > Traffic Ground Track and Warning Window
If the number of Traffic Advisories on the TIS display decreases and
then increases, a new audio alert is sounded. The TIS audio alert is
also generated whenever TIS service becomes unavailable.
NOTE: The Traffic Warning Window is disabled when the
aircraft ground speed is less than 30 knots or when on the
approach leg of a route.
The following TIS audio alerts are available:
• Traffic—TIS traffic alert received.
• Traffic Not Available—TIS service is not available or out of
range.
Note: TIS audio alerts can be turned off in the Main Menu
Sound tab.
Traffic Ground Track
Traffic Target Track Vector
Traffic ground track is indicated on the GPSMAP 496 screen by a
“target track vector”, a short line shown in 45-degree increments,
extending in the direction of target movement.
Traffic Warning Window
When a traffic threat is imminent, the Traffic Warning Window is
shown. The Traffic Warning Window shows a small thumbnail map.
Press QUIT to go back to the previous page.
Traffic Warning Window
GPSMAP 496 Owner’s Manual151
TIS > Map Page
Map Page
TIS traffic can be shown on the Map Page.
To configure TIS Traffic on the Map Page:
1. Press PAGE until the Map Page appears.
2. Press MENU. The Map Page options menu appears.
3. Highlight Set Up Map, and press ENTER.
4. Highlight the Map sub tab.
5. Select TIS Traffic, and use the ROCKER to change the Zoom
range.
Highlighting TIS Traffic Using Map Page Panning
Another Map Page feature is panning. Refer to page 31 for more
information.
When the target pointer is placed on traffic, the traffic range and
altitude separation are shown.
Displaying traffic range and altitude separation
using the Map Panning feature.
152
GPSMAP 496 Owner’s Manual
TIS > Operation Procedures
TIS Operational Procedures
TIS warns the user with voice and visual traffic advisories whenever
it predicts an intruder to be a threat. The user should not start
evasive maneuvers using information from the GPSMAP 496 screen
or on a traffic advisory only. The display and advisories are intended
only for assistance in visually locating the traffic, due to the lack in
resolution and coordination ability. The flight crew should attempt to
visually acquire the intruder aircraft and maintain a safe separation
in accordance with the regulatory requirements and good operating
practice. If the flight crew cannot visually acquire the aircraft,
they should contact ATC to obtain any information that may assist
concerning the intruder aircraft. Based on the above procedures,
minor adjustment to the vertical flight path consistent with air traffic
requirements are not considered evasive maneuvers.
The TIS Traffic Advisory (TA) should alert the crew to use
additional vigilance to identify the intruding aircraft. Any time
the traffic symbol becomes a yellow circle or a voice warning is
announced, conduct a visual search for the intruder. If successful,
maintain visual contact to ensure safe operation.
GPSMAP 496 Owner’s Manual
Intruder Aircraft
0.5 nm
This area within 34 seconds
+ 500 ft
- 500 ft
Conditions for Traffic Advisories
TIS shows a Traffic Advisory (TA) on the GPSMAP 496 when an
intruder aircraft approaches your aircraft on a course that intercepts
(defined by a 0.5 nm horizontal radius and a relative altitude of ±
500 ft) your course within 34 seconds.
153
VHF Comm > Overview
VHF Comm
The GPSMAP 496 can also output frequency data to a Garmin aviation
radio. Currently the two models supported are the SL30 nav/comm and
the SL40 comm. Refer to page 159 for wiring information.
Caution: This interface does not have an FAA installation
airworthiness approval. If any abnormalities with SL 30/40
tuning or operation are encountered, disconnect the GPSMAP
496 from the SL 30/40 tuning interface.
To configure the VHF comm output:
1. Press MENU twice. The Main Menu appears.
2. Highlight the Setup tab.
3. Use the ROCKER to select the Interface sub tab.
4. Highlight the Serial Data Format field and use the ROCKER
to select TIS In/NMEA & VHF Out or Aviation In/NMEA &
VHF out. These comm modes send both NMEA data and VHF
frequency information.
154
The following features are now available on the radio:
• Remote frequency lists for departure, enroute, and arrival airports
• Nearest VOR frequencies (SL30 only)
Note: See your SL30/40 User’s Guide regarding information
on accessing remote frequency lists.
You can also use the GPSMAP 496 to directly tune a standby
frequency in the radio by using the Comm tab when reviewing an
airport.
To select a standby comm frequency:
1. Use the map pointer or the NRST key to select an airport.
2. Highlight the Comm sub tab.
3. Select a comm frequency, and press ENTER. The frequency is now
tuned in the standby slot on the radio.
If the comm frequency has a restriction, the restriction page has a
Tune button, which performs the same function.
GPSMAP 496 Owner’s Manual
Appendix > Specifications
Appendix
Specifications
Physical Specifications
Size: Weight: Display:
Case: Temp. Range: Power
Battery:
Battery Life:
Source: Fuse:
5.7'' W x 3.2'' H x 1.9'' D
(14.5 x 8.1 x 4.8 cm)
14.2 oz (.40 kg)
3.75'' diagonal (9.5 cm) Transflective, 256-color
display with backlighting (480 x 320 pixels)
Fully gasketed, high-impact plastic alloy,
waterproof to IEC 60529 IPX7
5°F to 140°F (-15°C to 60°C)
Performance
Receiver: Differential-ready 12 parallel channel receiver
Acquisition Times: Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (First Time/AutoLocate®)
Update Rate:
5/second, continuous
Accuracy
GPS: 15 meters (49 feet) RMS 95% typical
DGPS (USCG): 3–5 meters (10–16 ft), 95% typical
DGPS (WAAS): < 3 meters (10 ft) 95% typical with DGPS
corrections
Velocity: 0.1 knot RMS steady state
Dynamics: 6 g's
Rechargeable lithium-ion
4 to 15 hours based on the XM antenna and
backlight usage
11–35 VDC
3AG-1.5 Amp
GPSMAP 496 Owner’s Manual155
Appendix > Care Information
Care Information
Contact Garmin if you have any questions caring for your GPSMAP
496. In the USA contact Garmin Product Support by phone: (913)
397-8200 or (800) 800-1020, Monday–Friday, 8 AM–5 PM Central
Time; or go to www.garmin.com/support.
In Europe, contact Garmin (Europe) Ltd. at +44 (0) 870.8501241
(outside the UK) or 0808 2380000 (within the UK).
Cleaning the Unit
The GPSMAP 496 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.
156
Storing the GPSMAP 496
Do not store the GPSMAP 496 where prolonged exposure to
temperature extremes can occur (such as in the trunk of a car) as
permanent damage may result. User information, such as waypoints
and routes, is retained in the unit’s memory without the need for
external power. It is always a good practice to back up important
user data by manually recording it or downloading it to a PC
(transferring it to MapSource).
Immersing the Unit in Water
The GPSMAP 496 is waterproof to IEC Standard 60529 IPX7. It can
withstand immersion in 1 meter of water for 30 minutes. Prolonged
submersion can cause damage to the unit. After submersion, be
certain to wipe and air dry the unit before reuse or charging.
GPSMAP 496 Owner’s Manual
Appendix > Optional Accessories
Optional Accessories
In addition to the standard accessories included with your
GPSMAP 496, the optional accessories are designed to enhance
the operation of the GPSMAP 496.
To obtain replacement parts and optional accessories, contact
your Garmin dealer, Garmin Product Support in the USA at
800/800.1020, or Garmin Europe at 44/0870.8501241.
WARNING: Garmin accessories have been designed and
specifically tested for use with Garmin products. Accessories
offered 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 496 and void the warranty.
PC Interface Cable—Connects the unit to a serial port on your PC.
Power/Data Cable—Allows you to connect the unit to the electrical
system using the bare wires.
Programmable Data Cards—Blank data cards available in a
variety of sizes. Download detailed map data from MapSource
CD-ROMs to a data card, either directly through your GPSMAP
496 using the included USB-PC Interface Cable, the optional PC
Interface Cable (with a Serial connector), 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 496 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 496, including
BlueChart, Fishing Hot Spots, and Topo.
Pre-Programmed Data Cards—Data cards pre-programmed with
either Garmin BlueChart or Fishing Hot Spots map data.
GPSMAP 496 Owner’s Manual157
Appendix > Installation Information
Installation Information
Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 496 to an 11–35 VDC
system and provides interface capabilities for connecting external
devices. The color code in the diagram below and to the right
indicates the appropriate harness connections. Replacement fuse is a
3AG - 1.5 Amp fuse.
Ground
Black
Alarm
White
Voice (+)
Brown
Voice (-)
Orange
Data Out
Blue
Power
Red
Data In
Yellow
Power/Data Connector on the GPSMAP 496 Unit
Voice (-)
Orange
Data Out
Blue
Power
Red
Ground
Black
Alarm
White
Voice (+)
Brown
Data In
Yellow
Power/Data Connector on the Cable
Red: Power
Black:
Ground
(-)
(+)
11–35 VDC
RXD +
158
Note: The Alarm pin is used in Marine installations only.
Note: The Voice (+) and Voice (-) pins are intended for a
speaker in automotive installations. Do not connect the Voice
(+) and Voice (-) pins to an intercom or audio panel without first
consulting the manufacturer.
Autopilot/
NMEA Device
Blue:
Data Out
RXD Switch
Yellow:
Data In
Closed - On,
Open - Off
(+)
White/Blue
Orange GSD 20
Sounder
(-)
White/Brown
GPSMAP 496 Owner’s Manual
Appendix > Installation Information
Connecting to a GTX 330 Mode S Transponder
To receive Mode S TIS traffic data from a GTX 330 transponder on
your GPSMAP 496, connect an available RS-232 OUT pin on the
transponder to the Data In pin on the GPSMAP 496. (You do not
need to connect the transponder to the GPSMAP 496’s Data Out
pin.) Then, set the corresponding RS-232 output configuration on
the transponder to REMOTE + TIS and set the GPSMAP 496’s
Serial Data Format to TIS In or TIS In/NMEA & VHF Out. For
more information, see the TIS section on page 147 and the GTX 330
Transponder Installation Manual.
Connecting Your GPSMAP 496 to a Computer
Your GPSMAP 496 can be connected to your computer using the
included USB-PC Interface Cable to connect to a USB data port
or the optional PC Interface Cable to connect to a DB-9 serial
communications port.
Note: Fully install the supplied MapSource program, Trip &
Waypoint Manager, on your computer before connecting the
USB cable to the computer.
Connecting to a Garmin VHF Comm Radio
To output frequency data to an SL40 comm or SL30 nav/comm
radio, connect the Data Out pin on the GPSMAP 496 to the RxD
pin on the comm radio. (You do not need to connect the comm radio
to the GPSMAP 496’s Data In pin.) Set the GPSMAP 496’s Serial
Data Format to TIS In/NMEA & VHF Out or Aviation In/NMEA
& VHF Out. For more information, see the VHF comm section on
page 154 and your nav/comm radio’s installation manual.
USB
connector
under
weather cap
USB Data Port on your PC
Serial Communications Port
GPSMAP 496 Owner’s Manual159
Appendix > Installation Information
To connect your GPS to your computer:
1. Connect the small end of your cable to the lower connector on
the back of the GPSMAP 496.
2. When using the supplied USB Data Cable, connect the larger
end of the cable to an available USB data port.
When using a PC Interface Cable, connect the larger end of the
cable to a serial communications port on your computer.
Information about USB Drivers
The USB drivers should have been automatically installed when you
installed the MapSource program that came with your GPSMAP
496. When you initially connect the GPSMAP 496 to a USB port,
your computer prompts you to locate the destination of the drivers
for the device. You only need to install the drivers once. After the
drivers are installed, your computer always detects your GPSMAP
496 when it is connected. USB drivers are updated periodically. You
can find these updates at www.garmin.com.
Using xImage for Customized Waypoint Symbols
xImage allows you to exchange images between your PC and your
GPSMAP 496. You can download and save screen shots of any
screen shown on your unit. xImage also allows you to download
customizable splash screens and waypoint symbols from compatible
GPS units, customize them (if you have an image editing program
on your PC), and send them back to your GPS unit.
160
You can download xImage from the Garmin Web site at
www.garmin.com/ximage. Refer to the help file for complete
instructions about using xImage.
Installing and Removing Data Cards
The GPSMAP 496 uses an optional Garmin data card to show
digital charts and maps. Install the data card in the slot located on
the bottom of the unit. Install or remove the data card at any time,
whether the unit is on or off.
You can load a variety of information on your data card, such as
BlueChart and MapSource detailed maps in a MapSource program.
You can buy pre-programmed cards to use with your GPSMAP 496.
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 install a data card:
1. Insert the card into the slot on the bottom of the unit. Be sure the
label is facing the front of the unit.
2. Firmly push the card into the unit. It is not necessary to force the
card. The handle is still exposed when it is properly inserted.
GPSMAP 496 Owner’s Manual
Appendix > Installation Information
3. If the unit is on, a confirmation tone sounds. The first time you
insert a programmed data card, the unit takes a few seconds to
read the card. When the data card has been properly installed
and accepted, a summary screen noting the card details
appears. Press Enter to acknowledge.
If you insert a data card and get a card format not recognized
message, try removing the card and reinserting it. If the card is still
not recognized, contact Garmin Product Support or your Garmin
dealer.
To connect the GXM 30A antenna:
1. Position the antenna where it has a clear view of the sky. This
can be on the outside of the vehicle or behind the windscreen.
2. Plug the GXM 30A cable into the USB port on the back of the
unit, as shown in the following illustrations.
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 is
removed.
Connecting the GXM 30A Antenna
Connect the GXM 30A antenna to the GPSMAP 496 to access XM
WX satellite weather and XM Radio. For more information about
the GXM 30A antenna, see the GXM 30A Owner’s Manual.
note: You must subscribe to XM Radio and/or XM WX
Satellite Weather to use the XM Radio and/or XM Weather
features on your GPSMAP 496.
GXM 30A Antenna Plugged In
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,
RTCM SC-104 input (version 2.0), and Garmin proprietary formats
for connecting to a Mode S transponder for TIS data, and to a
Garmin aviation NAV/COM radio.
The following are the Approved Sentences for NMEA 0183,
version 3.01 output: GPRMC, GPGGA, GPGSA, GPGSV, GPGLL,
GPSMAP 496 Owner’s Manual161
Appendix > Installation Information
GPBOD, GPRTE, and GPWPL. The following are the Proprietary
Sentences for NMEA 0183, version 3.01 output: PGRME, PGRMZ,
PGRMM, and PGRMH.
The GPSMAP 496 also includes NMEA input with support for the
BWC, DBT, DPT, MTW, VHW, VTG, and XTE sentences.
Garmin’s proprietary communication protocol is available from the
Web site (www.garmin.com).
Removing the GPS Antenna
You can remove the antenna to use an external antenna. After the
antenna is removed, the BNC connector is exposed and ready for use
with an external antenna. For information on connecting an external
antenna to the GPSMAP 496, refer to the installation instructions
that came with the antenna.
Removing the GPS Antenna
To remove the GPS antenna:
1. Remove the external power cable from the connector on the back
of the GPSMAP 496.
2. Rotate the antenna to approximately a seven o’clock position.
The alignment notches in the casing must line up with the
notches on the antenna.
3. Pull the antenna away from the GPSMAP 496 unit.
162
GPSMAP 496 Owner’s Manual
Appendix > Learning about GPS
Learning About GPS
The Global Positioning System (GPS) is a satellite-based navigation
system made up of a network of 24 satellites placed into orbit by the
United States Department of Defense.
GPS was originally intended for military applications, but in the
1980s, the government made the system available for civilian use.
GPS works in any weather conditions, anywhere in the world, 24
hours a day. There are no subscription fees or setup charges to use
GPS. For more information refer to the Garmin Web site at
www.garmin.com and also read the GPS Guide for Beginners at
www.garmin.com/aboutGPS/manual.html.
Common GPS Terms
Initialize—the first time a GPS receiver orients itself to its current
location and collects data. After the receiver is initialized, it
remembers its location and acquires a location more quickly.
Location—an exact, unique location based on geographic
coordinates (Latitude and Longitude).
Route—A group of waypoints entered into the GPS receiver in the
sequence you want to navigate them.
Waypoint—a location you store in your GPS.
GPSMAP 496 Owner’s Manual
What is Differential GPS (DGPS)?
The United States and Canadian governments (among others) have
set up Differential GPS (DGPS) stations to transmit correction
signals. They are operational in coastal areas and on many navigable
river systems.
The DGPS system is available for use without a fee, but you do need
additional equipment to receive DGPS signals: A beacon receiver
compatible with the RTCM format sentences supported by your
Garmin GPS is needed to use DGPS.
Refer to the United States Coast Guard’s Web site (www.navcen
.uscg.gov) for locations and status of the differential stations.
Differential Field
Differential receiver status is indicated in the bottom-left field of the
GPS Page and shows one of the following conditions:
• None—no optional beacon receiver is attached or enabled
on the Interface sub tab on the 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.
163
Appendix > Learning about GPS
• Check Beacon Wiring—the DGPS setting is enabled in the
Interface sub tab on the Main Menu but no DGPS device is
detected.
• No Beacon Signal—DGPS receiver is attached, but not
transmitting RTCM data to GPS.
• Tuning Beacon—the receiver is tuning manually to a DGPS
frequency.
• Using Differential—the unit is receiving DGPS corrections.
• Scanning for Beacon—the DGPS receiver is scanning for an
available frequency.
What is WAAS/EGNOS?
The Wide Area Augmentation System (WAAS) is an FAA-funded
service to improve the overall integrity of the GPS signal and
increase position accuracy for users in North America. In Europe,
WAAS is referred to as EGNOS.
The system is made up of satellites and approximately 25 ground
reference stations positioned across the United States that monitor
GPS satellite data. Two master stations, located on either coast,
collect data from the reference stations and create a GPS data
correction message.
164
According to the FAA’s Web site, testing in September 2002, WAAS
confirmed an accuracy performance of 1–2 meters horizontal and
2–3 meters vertical throughout the majority of the continental
United States and portions of Alaska.
WAAS is just one service provider that adheres to the Minimum
Operational Performance Standard (MOPS) for global Satellite
Based Augmentation Systems (SBAS). Eventually, there will
be several services of worldwide geostationary communication
satellites and ground reference stations.
All SBAS systems use the same receiver frequency; therefore any
operational SBAS system should be capable of providing your GPS
unit with increased accuracy at any location in the world.
Currently, enabling WAAS on your Garmin GPSMAP 496 in regions
that are not supported by ground stations may not improve accuracy,
even when receiving signals from an SBAS satellite. In fact, it can
degrade the accuracy to less than that provided by GPS satellites
alone. For this reason, when you enable WAAS on your Garmin
GPS receiver, the receiver automatically uses the method that
achieves the best accuracy. To enable WAAS, refer to page 4.
For more information, go to http://gps.faa.gov/Programs/WAAS/
waas.htm.
GPSMAP 496 Owner’s Manual
Appendix > Loran TD Setup
LORAN TD Setup
LORAN is a radio navigation aid operated and maintained in the
United States by the United States Coast Guard. The name LORAN
is an acronym for “LOng RAnge Navigation”. The LORAN
system covers the entire United States and the United States
Coastal Confluence Zone. From the perspective of a mariner, the
system is used for ocean and coastal navigation. It can be used as a
supplemental system for harbor and harbor approach navigation, and
it is used for inland navigation by recreational vehicles.
LORAN TD Feature
The LORAN TD (Time Delay) feature eases the transition from
using LORAN to using GPS. The GPSMAP 496 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 show your location as a TD
or enter waypoints as TDs. The accuracy to be expected from this
conversion is approximately thirty (30) meters. When the unit is
placed in the LORAN TD format mode, it simulates the operation
of a LORAN receiver. Location coordinates can be showed as TDs,
and all navigation functions can 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 always reference the LORAN
chain number and secondary stations currently selected in the
Setup TD field. If you enter a different LORAN chain number, or
change the secondary stations or offsets in the Setup TD field, the
active waypoint information does reflect those changes. Since the
GPSMAP 496 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 Location Format field is located under the Units sub
tab in the Main Menu. The LORAN TD Setup window contains
the fields to select the Loran GRI-Chain Number, Primary and
Secondary Stations, and TD Offsets.
GPSMAP 496 Owner’s Manual165
Appendix > Loran TD Setup
To set up LORAN TD from the Main Menu:
1. Press Menu twice to show the Main Menu.
2. Use the ROCKER to highlight Setup on the vertical tab list. Then
select Location from the row of horizontal tabs.
3. Using the ROCKER, highlight the Location Format field and
press Enter.
LORAN TD Setup
Location Sub Tab
4. Highlight Loran TD, and press Enter.
5. Highlight the Setup button located on the right side of the
Location Format field, and press Enter. The Loran TD Setup
window appears.
6. To change the settings of any of the five fields, highlight the field,
press Enter, enter the setting using the ROCKER, and press
Enter.
7. When finished, highlight the Save button, and press Enter.
166
If the active GRI Chain, secondary stations, or offsets were changed
since the waypoint was created, the waypoint now references
the active GRI chain and secondary stations and adjust the TD
coordinates accordingly. Remember that the GPS is not relying
on the LORAN signal for navigation and actually converts the
TD coordinate to a useful latitude and longitude coordinate before
storing the waypoint to memory or using it for navigation. Because
of this, the unit can navigate to a TD coordinate anywhere in the
world.
You must know your GRI chain number and/or secondary stations
to create a LORAN TD location. For more information read our
LORAN TD Position Format Handbook, available at the Garmin
Web site, at www.garmin.com/support/userManual.jsp.
GPSMAP 496 Owner’s Manual
Appendix > Map Datums and Location Formats
Map Datums and Location Formats
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 to ensure the most accurate
navigation.
What is a Location Format?
Map Datums are based on a mathematical model of the Earth.
What are Map Datums?
A datum is a mathematical model of the Earth that approximates
the shape of the Earth and enables calculations to be carried out in a
consistent and accurate manner. The datum is physically represented
by a framework of ground monuments (such as trig. stations) whose
locations 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 496 can be set to match most of those
commonly used.
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 used by all
Garmin units. You can 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), are available.
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 www.garmin.com/manuals/
UsingaGarminGPSwithPaperLandMaps_Manual.pdf.
GPSMAP 496 Owner’s Manual167
Appendix > Digital Selective Calling (DSC)
Digital Selective Calling (DSC)
Any time a vessel receives a DSC call, they can store that location
and quickly navigate to that location using a Go To. This makes
DSC a time-saver, especially in an emergency situation. In order to
use DSC, users must first register their VHF radio with the FCC and
receive a Maritime Mobile Service Identity (MMSI) number.
A non-emergency DSC Position Report allows mariners to exchange
and show the locations of one another. When you receive a DSC
location, you can create a waypoint or to show the received location
on an electronic map.
What is a Maritime Mobile Service Identity
(MMSI)?
Digital Selective Calling (DSC) uses marine VHF radio and Global
Positioning System (GPS) technologies to transmit and receive
location information. DSC is used by mariners to assist them in two
major areas: Distress Calls and Position Reporting.
An emergency DSC Distress Call allows a vessel in trouble to
transmit a substantial amount of information in a single transmission
or “call,” without the need for voice communication. When any
nearby rescuer receives the DSC signal, an alarm sounds and they
immediately receive the location of the caller.
The rescuer can choose to navigate (Go To) the caller’s location to
assist or forward the call on to the Coast Guard. When the Coast
Guard receives the call, they can immediately access the caller’s
information (such as who they are and the type of vessel) in their
database while they are in transit to the caller’s location.
168
Maritime Mobile Service Identity (MMSI) basically allows a VHF
radio to act like a phone. The 9-digit MMSI number acts like a
phone number when used in a Position Report and as a unique
identifier to the Coast Guard when used in an emergency Distress
Call. To obtain a Maritime Mobile Service Identity (MMSI) number,
users must register their VHF radio with the FCC (Form 605).
Garmin does not supply this number!
For more information regarding MMSI’s visit
www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm.
GPSMAP 496 Owner’s Manual
Appendix > Digital Selective Calling (DSC)
How Are MMSI Assignments Obtained?
Non-commercial users, such as recreational users, who remain
in United States waters and only carry VHF, EPIRB (Emergency
Position Indicating Radio Beacons), and Radar are not required to
have a FCC ship station license. The FCC and Coast Guard have
authorized some second and third party vendors to assign MMSI
numbers. This service is limited to registering recreational vessels
only. To receive information on how to obtain a recreational MMSI
number go to www.uscg.mil.
United States Non-Federal User
Commercial users, or those who travel outside the United States or
Canada, must apply for a ship station license or an amendment to a
ship station license. To find out if you require a Ship Station license
contact http://wireless.fcc.gov/marine/fctsht14.html. If your vessel
requires licensing by the FCC, a MMSI is assigned to you during
the application/licensing process when you file FCC Forms 159 and
605.
United States Federal User
Federal users can obtain MMSI assignments from their agency
radio spectrum management office. These procedures are currently
under review by the National Telecommunications and Information
Administration (NTIA).
User Outside the United States
Users can obtain an MMSI assignment from their
telecommunications authority or ship registry, often by obtaining or
amending their ship station license.
User In Canada
Industry Canada is responsible for assigning MMSI numbers to
commercial and recreational vessels. Information is available at
http://sd.ic.gc.ca/engdoc/mmsi.jsp.
How Can Garmin Help You with DSC?
To receive Distress Calls or Position Reports, you must have a DSCequipped chartplotter as well as a VHF radio with DSC support.
During normal, non-emergency Position Report communication,
Channel 70 (156.525 MHz) has been set aside as the VHF/DSC
digital call channel.
For a Distress Call, press the MayDay button on the VHF radio.
The call transmits on an emergency channel with the MMSI number
attached to the call, if the receiver has DSC support. Any DSCequipped mariner (on sea or land) within range can receive the call.
When the Garmin GPSMAP 496 is connected to a VHF with DSC
support, the GPS unit shows a Call List, Log, and a Directory. Basic
wiring is required for the Garmin unit and VHF radio to send and
receive NMEA data from each other.
GPSMAP 496 Owner’s Manual169
Appendix > Jeppesen Database Information
Jeppesen Database Information
The GPSMAP 496 includes an internal Jeppesen database that
provides location and facility information for thousands of airports,
VORs, NDBs, and more. Updates to the Jeppesen database are
available every 28 days online (www.garmin.com). The update
program is designed to operate on Windows®-compatible PCs and
requires the included USB cable to connect your GPSMAP 496 to
the PC’s USB port. The following information is provided from the
internal Jeppesen database:
®
Airport—* identifier, facility name, city/state/country, latitude/
longitude, field elevation, available fuel types, runway designations
and layout, runway surface, runway length, runway width, runway
lighting, communication frequencies, and published approaches.
Weather—frequencies associated with an airport (ASOS, ATIS, and
AWOS).
VORs—* identifier, facility name, city/state/country, location
(latitude/longitude), frequency, service volume (high, low, terminal),
and type (such as VOR-DME, TACAN, and VORTAC).
NDBs—* identifier, facility name, city/state/country, location
(latitude/longitude), and frequency.
Intersections—identifier, nearest VOR, radial and distance from
nearest VOR, location (latitude/longitude), and region/country.
170
ARTCC—Air Route Traffic Control Centers.
Airspace—boundaries (Class B, Class C, Control Zones, SUAs, and
MOAs), controlling agency, and vertical boundaries.
FSS—Flight Service Stations.
* Symbology used for NDBs, VORs, and airports is consistent with
those used on a sectional chart.
Database Updates
Updates to the Jeppesen database are available every 28 days online
(http://shop.garmin.com/aviation/databases). The update programs
are designed to operate on Windows®-compatible PCs and requires
the included USB Interface Cable to be connected to the unit and an
available USB port on your computer.
Note: After you perform an update to your Jeppesen database,
verify that all of your flight plans (routes) in your unit are
current. If there is an obsolete Jeppesen aviation point in a saved
route, the route is locked and unusable. You need to create a new
route with current Jeppesen database points.
An optional FlightBook software package is available to assist with
your flight record keeping. Visit the Garmin Web site at
www.garmin.com/aviation.
GPSMAP 496 Owner’s Manual
Appendix > Messages
Messages
Accuracy Alarm—the GPS accuracy has fallen outside of user-set
value.
Check XM Antenna—internal problem with your GXM 30A
antenna. Contact Garmin Product Support.
Alarm Clock—the alarm clock has sounded.
Database Error—internal problem with the unit. Contact your
dealer or Garmin Product Support to have the unit repaired.
Antenna Shorted to Ground—the external GPS antenna has an
electrical connection problem. Contact Garmin Product Support.
Deep Water—the water is deeper than the amount set in the Deep
Water Alarm.
Approaching Target Altitude—within 1,000 feet of final VNAV
target altitude.
Detail Maps Don’t Support Routing—maps that are loaded on the
data card do not support automatic route calculation.
Approaching Turn—you are nearing a turn in a route.
Distress Call—a DSC distress call was received. Take appropriate
action.
Approaching VNAV Profile—you are within one minute of
reaching the initial VNAV decent point.
Arriving at Destination—you are nearing your destination.
Batteries Low—the battery needs to be recharged.
Basemap Failed Unit Needs Repair—there is an internal problem
with your unit. Contact Garmin Product Support to have the unit
serviced.
Boat Is Not Moving Fast Enough to Calibrate—the boat is not
moving fast enough for the speed wheel to provide a valid speed.
Can’t Unlock Maps—no applicable unlock code for one or more
maps was found. All MapSource maps are not accessible.
Dragging Anchor—the distance set in the Anchor Drag Alarm is
exceeded.
Drift Alarm—the water depth has changed by the amount entered in
the Drift Alarm setup.
Fish Alarm—a fish was detected. The unit shows an icon and beeps
(if enabled). This alarm does not show a message banner.
Flash Flood Warning—a flash flood warning was issued for the
area by the National Weather Service.
Flood Warning—a flood warning was issued for the area by the
National Weather Service.
GPSMAP 496 Owner’s Manual171
Appendix > Messages
Lost Satellite Reception—the unit is unable to receive satellite
signals.
Marine Warning—a marine warning was issued by the National
Weather Service.
Memory Full—unit memory is full, no further data can be saved.
Memory (RAM) Failed Unit Needs Repair—there is an internal
problem with your unit. Contact Garmin Product Support to have the
unit serviced.
Near Proximity Point—you have reached the distance set for a
proximity waypoint.
NMEA Depth is Below Transducer—no keel offset value has been
received from the external sonar device.
No Diff GPS Location—RTCM is selected but the unit is not
receiving DGPS data.
No Roads Near Destination—the destination for the road route you
tried to calculate is not near any roads. Select a different destination.
not enough data is available to calculate a DGPS position.
No Tide Stations for that Area—no tide stations within 100 miles
of the area.
No XM Signal—the GXM 30A antenna is not receiving an XM
signal.
None Found—no data matched the search criteria.
Off Course—you are off course by the distance set in the Off
Course Alarm.
Proximity Memory Full—no additional proximity waypoints can
be saved.
Proximity Radius Overlaps—the radius of two proximity
waypoints overlap.
Route Already Exists—you have entered a route name that already
exists.
Route Calculation Error—no route can be calculated.
Route Memory Full—no additional routes can be saved.
No Roads Near Starting Point—the start location for the road
route you tried to calculate is not near any roads. Select a different
start location.
Route Truncated—uploaded route from another device has more
than 300 waypoints.
No DGPS Position—no differential connection data is available, or
Route Waypoint Memory Full—no additional route waypoints can
172
GPSMAP 496 Owner’s Manual
Appendix > Messages
be saved.
Saving XM Program Information—an XM Radio channel lineup
change has occurred and the unit is saving the channel lineup to
memory.
Shallow Water—the water is shallower than the amount set in the
Shallow Water Alarm.
Sonar Failed Unit Needs Repair—there is an internal problem with
the unit. Contact Garmin Product Support to have the unit serviced.
Steep Turn—approaching a turn that requires a bank angle in excess
of 25 degrees to stay on course.
Sunrise, Switching to Day Mode—the unit is switching to Day
Mode.
Track Log Full—the track log is full and track recording was turned
off. To record more track points, you need to clear the track log and
turn track recording on.
Track Memory Full—no more track data can be stored. Delete the
old track data to store the new data.
Track Truncated—a complete uploaded track will not fit in
memory. The oldest track log points have been deleted.
Transducer Disconnected, Sonar Turned Off—the unit has
no transducer attached, has a bad cable/transducer, or has a
disconnected transducer cable.
Transfer Complete—data transfer was completed.
USB Connected—the USB cable was recently plugged in.
Sunset, Switching to Night Mode—the unit is switching to Night
Mode
User Timer Expired—the Timer Alarm value has counted down to
zero.
Thunderstorm Warning—a severe thunderstorm warning was
issued for the area by the National Weather Service.
VNAV Cancelled—VNAV function has been cancelled due to a
change in the active route.
Tornado Warning—a tornado warning was issued for the area by
the National Weather Service.
Water Speed Sensor is Not Working—the speed sensor is not
detected. Check the connections.
Track Already Exists—a saved track with the same name already
exists.
Water Temperature Alarm—sonar has reported a temperature
above, below, inside, or outside the specified values(s).
GPSMAP 496 Owner’s Manual
173
Appendix > Data Field Options
Waypoint Already Exists—a waypoint with the same name already
exists.
Waypoint Memory Full—the unit has stored the maximum number
of waypoints.
XM Antenna Not Responding—the unit is unable to communicate
with the GXM 30A.
Steer.
Cross Track—the distance you are off your course in either
direction, left or right.
Depth (Marine Only)—the depth of water from sonar NMEA input.
Dest Wpt—see Waypoint (Destination).
XM Connected—the GXM 30A antenna was recently plugged in.
Distance (Destination)—the entire distance, from beginning to end,
of a route.
Data Field Options
Distance (Next)—the distance to the next point on a route.
Accuracy—the current accuracy of your GPS determined location.
ETA (Next)—Estimated Time of Arrival. The estimated time you
will reach the next point on your route.
Battery Timer—the time remaining on the battery before it is fully
discharged.
ETE (Destination)—Estimated Time Enroute. The estimated time
required to reach your destination.
Bearing—the compass direction from your current location to a
destination.
ETE (Next)—Estimated Time Enroute. The estimated time required
to reach the next point on your route.
Course—the your path of travel from your starting location to a
destination.
Elevation—the altitude (height) above or below mean sea level
(MSL).
Course to Steer—the recommended direction to steer in order to
reduce cross-track error and return to the course line. Showed as
GPS Status—the current status of the GPS receiver, such as “3D
The following list provides a brief description of each data field
option. Some of these options are supported only by devices
interfaced to your GPSMAP 496.
174
ETA (Destination)—Estimated Time of Arrival. The estimated time
you will reach your destination.
GPSMAP 496 Owner’s Manual
Appendix > Data Field Options
GPS.”
Location (Lat/Lon)—your current location as latitude/longitude
coordinates.
Location (Selected)—your current location described in the
selected units of measure (other than lat/lon).
Max Speed—the maximum speed the unit has moved since last
reset.
Mov Avg Spd—see Trip Avg. Speed (Moving).
Speed—your current vehicle speed can be measured in miles per
hour, kilometers per hour, or knots.
Steer—see Course to Steer.
Sunrise—the time at which the sun rises on this day.
Sunset—the time at which the sun sets on this day.
Time—the current time and date. It can be shown in 12-hour or 24hour format in local time or universal (UTC) time.
Move Timer—see Trip Timer (Moving).
Track—the direction of movement relative to a ground position.
Also referred to as ground track.
Next Course—the course your route will take you on after you
reach the next waypoint.
Trip Avg. Speed (Moving)—the average speed while moving since
the last reset of the Trip Computer. Appears as Mov Avg Spd.
Next Turn—the direction of the next turn on an active route.
Trip Avg. Speed (Total)—the total average speed traveled since the
last reset of the Trip Computer. Shown as Ttl Avg Spd.
Next Wpt—see Waypoint (Next).
Odometer—the total distance traveled since the Odometer was
reset.
Pointer—the arrow indicating the direction to travel to the next
point on a route.
Power—the power indicator icon: Battery, External Power, or
Charging.
Trip Odometer—the total distance traveled since the Trip
Computer was reset.
Trip Timer (Moving)—the length of time your vehicle has been in
motion, since the Trip Computer was reset. Appears as Move Timer.
Trip Timer (Total)—the total time the unit has been tracking since
the Trip Computer was reset.
GPSMAP 496 Owner’s Manual175
Appendix > Data Field Options
Ttl Avg Spd—see Trip Avg. Speed (Total).
Turn—the distance between Bearing (BRG) and Track (TRG). L
indicates you should turn left. R indicates you should turn right. The
degrees indicates the difference angle and the number of degrees
you should turn.
Weather–Altimeter—the altimeter setting at the nearest METAR
reporting station.
Weather–Dew Point—the dew point at the nearest weather
reporting station.
User Timer—the timer you set in the Main Menu.
Weather–Pressure—the surface pressure at the nearest weather
reporting station.
Velocity Made Good—the rate of closure on a destination based on
your current speed and course of travel. Shown as VMG.
Weather–Relative Humidity—the relative humidity at the nearest
weather reporting station.
Vertical Speed—the rate of climb or descent.
Weather–Temperature—the temperature at the nearest weather
reporting station.
Voltage—the direct current voltage level of an external power
source.
Water Speed (Marine Only)—the data acquired from measurement
devices interfaced to the unit is used to calculate your current speed
over water.
Water Temperature (Marine Only)—the temperature of water at a
measured depth using measurement devices interfaced to the unit.
Weather–Wind—the wind speed and direction at the nearest
weather reporting station.
XM Audio—the artist and song title of the XM audio channel
currently playing.
XM Signal—the strength of the XM signal.
Waypoint (Destination)—the last point on a route, your destination.
Appears as Dest Wpt.
Waypoint (Next)—the next waypoint in your route. Shown as Next
Wpt.
176
GPSMAP 496 Owner’s Manual
Appendix > License Agreement and Warranty
License Agreement and Warranty
This section contains information about your license agreement and
warranty for the GPSMAP 496.
Software License Agreement
BY USING THE GPSMAP 496, YOU AGREE TO BE BOUND BY THE
TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE
AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY.
Garmin grants you a limited license to use the software embedded in this device
(the “Software”) in binary executable form in the normal operation of the product.
Title, ownership rights, and intellectual property rights in and to the Software
remain with Garmin.
You acknowledge that the Software is the property of Garmin and is protected
under the United States of America copyright laws and international copyright
treaties. You further acknowledge that the structure, organization, and code of
the Software are valuable trade secrets of Garmin and that the Software in source
code form remains a valuable trade secret of Garmin. You agree not to decompile,
disassemble, modify, reverse assemble, reverse engineer, or reduce to human
readable form the Software or any part thereof or create any derivative works based
on the Software. You agree not to export or re-export the Software to any country in
violation of the export control laws of the United States of America.
Product Registration
Help us better support you by completing our online registration
today! Connect to our Web site at http://my.garmin.com. Keep the
original sales receipt, or a photocopy, in a safe place.
Contact Garmin
Contact Garmin if you have any questions while using your
GPSMAP 496. In the USA contact Garmin Product Support by
phone: (913) 397-8200 or (800) 800-1020, Monday–Friday, 8 AM–5
PM Central Time; or go to www.garmin.com/support.
In Europe, contact Garmin (Europe) Ltd. at +44 (0) 870.8501241
(outside the UK) or 0808 2380000 (within the UK).
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.
This product is intended to be used only as a travel aid and must not be used for
any purpose requiring precise measurement of direction, distance, location, or
topography. Garmin makes no warranty as to the accuracy or completeness of map
data in this product.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS,
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.
GPSMAP 496 Owner’s Manual177
Appendix > License Agreement and Warranty
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, contact your local Garmin authorized dealer or call
Garmin Product Support for shipping instructions and an RMA tracking number.
Securely pack the unit and a copy of the original sales receipt, which is required
as the proof of purchase for warranty repairs. Write the tracking number clearly on
the outside of the package. Send the unit, freight charges prepaid, to any Garmin
warranty service station.
Online Auction Purchases: 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.
International Purchases: A separate warranty is provided by international
distributors for units purchased outside the United States. This warranty is provided
by the local in-country distributor and this distributor provides local service for
your unit. Distributor warranties are only valid in the area of intended distribution.
Units purchased in the United States or Canada must be returned to the Garmin
service center in the United Kingdom, the United States, Canada, or Taiwan for
service.
178
AOPA Airport Directory Notice
AOPA MEMBERSHIP PUBLICATIONS, INC. AND ITS RELATED
ORGANIZATIONS (HEREINAFTER COLLECTIVELY “AOPA”) EXPRESSLY
DISCLAIM ALL WARRANTIES, WITH RESPECT TO THE AOPA
INFORMATION INCLUDED IN THIS DATA, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
INFORMATION IS PROVIDED “AS IS” AND AOPA DOES NOT WARRANT
OR MAKE ANY REPRESENTATIONS REGARDING ITS ACCURACY,
RELIABILITY, OR OTHERWISE. UNDER NO CIRCUMSTANCES
INCLUDING NEGLIGENCE, SHALL AOPA BE LIABLE FOR ANY
INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES THAT
RESULT FROM THE USE OR INABILITY TO USE THE SOFTWARE OR
RELATED DOCUMENTATION, EVEN IF AOPA OR AN AOPA AUTHORIZED
REPRESENTATIVE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. USER AGREES NOT TO SUE AOPA AND, TO THE MAXIMUM
EXTENT ALLOWED BY LAW, TO RELEASE AND HOLD HARMLESS
AOPA FROM ANY CAUSES OF ACTION, CLAIMS OR LOSSES RELATED
TO ANY ACTUAL OR ALLEGED INACCURACIES IN THE INFORMATION
ARISING OUT OF GARMIN’S USE OF THE INFORMATION IN THE
DATASETS. SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OR
EXCLUSION OF IMPLIED WARRANTIES OR LIABILITY FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS OR
EXCLUSIONS MAY NOT APPLY TO YOU.
Weather Data Warranty
THE WEATHER DATA SOFTWARE PRODUCT IS PROVIDED “AS IS.” ALL
OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE OR OF NON-INFRINGEMENT ARE HEREBY EXCLUDED.
GPSMAP 496 Owner’s Manual
Appendix > License Agreement and Warranty
USER SAFETY
If you use XM Services it is your responsibility to exercise prudent discretion and
observe all safety measures required by law and your own common sense. You
assume the entire risk related to your use of the Services. XM and Garmin assume
no responsibility for accidents resulting from or associated with use of the Services.
Your Radio Service includes traffic and weather information, and you acknowledge
that such information is not for “safety for life”, but is merely supplemental
and advisory in nature, and therefore cannot be relied upon as safety-critical in
connection with any aircraft, sea craft or automobile usage. This information is
provided “as is” and XM and Garmin disclaim any and all warranties, express and
implied, with respect thereto or the transmission or reception thereof. XM and
Garmin further do not warrant the accuracy, reliability, completeness or timeliness
of the traffic and weather information disclosed on the Radio Service. In no event
will XM and Garmin, their data suppliers, service providers, marketing/distribution,
software or Internet partners or hardware manufacturers be liable to you or to any
third party for any direct, indirect, incidental, consequential, special, exemplary
or punitive damages or lost profits resulting from use of or interruptions in the
transmission or reception of the Services.
LIMITS ON OUR RESPONSIBILITY
a) DISCLAIMERS.
EXCEPT AS EXPRESSLY PROVIDED HEREIN, WE MAKE NO WARRANTY
OR REPRESENTATION, EITHER EXPRESS OR IMPLIED, REGARDING
THE RADIO SERVICE. YOUR USE OF THE SERVICE IS AT YOUR
SOLE RISK. THE CONTENT AND FUNCTIONALITY OF THE SERVICE
IS PROVIDED “AS IS” WITHOUT ANY WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. ALL SUCH WARRANTIES OR REPRESENTATIONS
(INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
NON-INFRINGEMENT) ARE HEREBY DISCLAIMED.
b) LIMITATIONS OF LIABILITY.
WE ARE NOT RESPONSIBLE FOR ANY SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES OR LOSSES RELATING TO THE USE
OF THE RADIO SERVICE, WHETHER BASED ON NEGLIGENCE OR
OTHERWISE. OUR TOTAL LIABILITY TO YOU AND ANY OTHER PERSONS
RECEIVING OUR SERVICES, REGARDLESS OF THE CAUSE, WILL IN NO
EVENT EXCEED THE AMOUNTS THAT YOU HAVE PAID TO US FOR THE
SERVICE THAT YOU RECEIVED DURING THE SIX (6) MONTH PERIOD
IMMEDIATELY PRIOR TO THE SPECIFIC EVENT THAT GAVE RISE TO
THE APPLICABLE DAMAGE OR LOSS. THIS ALLOCATION OF RISK IS
REFLECTED IN OUR PRICES. YOU MAY HAVE GREATER RIGHTS THAN
DESCRIBED ABOVE UNDER YOUR STATE’S LAWS
This product was developed using DAFIF™, a product of the National GeospatialIntelligence Agency.
This product has not been endorsed or otherwise approved by the National
Geospatial-Intelligence Agency, or the United States Department of Defense (10
U.S.C. 425)
a. Under 10 U.S.C. 456, no civil action may be brought against the United States on
the basis of the content of a navigational aid prepared or disseminated by either the
former Defense Mapping Agency (DMA), National Imagery and Mapping Agency
(NIMA), or the National Geospatial-Intelligence Agency (NGA).
b. The DAFIF™ product is provided “as is,” and no warranty, express or implied,
including, but not limited to the implied warranties of merchantability and fitness
for particular purpose or arising by statute or otherwise in law or from a course of
dealing or usage in trade, is made by NGA as to the accuracy and functioning of the
product.
c. Neither NGA nor its personnel will be liable for any claims, losses, or damages
arising from or connected with the use of this product. The user agrees to hold
harmless the United States National Geospatial-Intelligence Agency. The user’s sole
GPSMAP 496 Owner’s Manual179
Appendix > License Agreement and Warranty
and exclusive remedy is to stop using the DAFIF product.
interference by one of the following measures:
XM Satellite Radio Service Agreement
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet that is on a different circuit from the GPS
unit.
• Consult the dealer or an experienced radio/TV technician for help.
This product 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.
XM Satellite Radio Inc.
Hardware and required monthly subscription sold separately. Subscription fee is
consumer only. Other fees and taxes, including a one-time activation fee may apply.
All programming fees and weather data subject to change. XM WX weather data
displays and individual product availability vary by hardware equipment. Reception
of the XM signal may vary depending on location. Subscriptions subject to
Customer Agreement included with the XM Welcome Kit and available at xmradio.
com. Available only in the 48 contiguous United States. XM WX is a trademark of
XM Satellite Radio Inc.
Contact XM Satellite Radio by phone at 800.985.9200 to subscribe to XM WX
Weather and/or XM Radio.
FCC Compliance
Industry Canada Compliance
Category I radiocommunication devices comply with Industry Canada Standard
RSS-210. Category II radiocommunication devices comply with Industry Canada
Standard RSS-310.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two 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 has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy
and may cause harmful interference to radio communications if not installed and
used in accordance with the instructions. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the
180
GPSMAP 496 Owner’s Manual
Index
Index
Symbols
2D 5, 63, 143
3D 5, 63
A
accessories 157
acquiring satellites 5
Active Route page
aviation mode 44
Active Track tab 87, 90
add to route 61, 68, 76, 80
advanced NMEA output setup 124
aircraft information 47–48
airport 18, 170
criteria 22
identifier 6, 12, 14
information 15, 16, 19
airspace 32
alarms 106
alert 21, 28
boundary 29, 32
information 20, 21, 32
nearest 18
alarms 28, 115
airspace 106
anchor drag 107
arrival 107
depth 108
descent rate 37, 38
DSC 100
fish 108
next turn 106
obstacle 37, 38
off course 107
persistent 106
proximity 86
sonar 108
system 107
terrain 37, 38
terrain page setup 39
VNAV 42
Alarms tab
airspace alarms 106
navigation 106
system alarms 107
alerts. See alarms
altitude 40, 119
antenna 1, 3, 162
append to route 80
approach 16, 23, 24, 44
ARTCC 18
assign category 83
asterisk (*) 16
audio connector 1
AutoLocate 3, 5
average location 80
avoids 67, 117
B
backlight 3, 114
baro pressure 50
battery
level 4
pack 1, 2
saver mode 116
beeper 115
BlueChart 160
bug indicator 41, 94
setting 34
C
cable 158
calculate routes for 117
calculation method 117
calendar 109–112
calibrated airspeed 50
calibrate water speed 141
cards, data 160
care information 157
categories
find menu 58
waypoint 82
CDI. See course deviation indicator
celestial information 109–112
Celestial tab
Hunt & Fish tab 112
Sun & Moon tab 109
Tide tab 110
charging 2, 4
check beacon wiring 164
cigarette lighter adapter 2
cleaning 156
clear track log 88
clock alarm 107
coast guard 168, 169
color mode 114
communication frequencies 20
comm usage restrictions 16
compass page 55, 95, 114
marine mode 94–95
options menu 94
connecting the power cable 2, 158
course deviation indicator 24, 40,
41, 94
course deviation scale 40, 41
course pointer 94
course to steer 34
create
category 82
flight plan 27
route 61, 62
waypoint. See marking a waypoint
creating a direct to 14–16
criteria 22
cruising speed 47
Current Route page 66
automotive mode 72
custom avoids 67, 117
GPSMAP 496 Owner’s Manual181
Index
D
dashboard 73
data card 160
slot 1
data fields 35
date 119
daylight saving time 119
DB-9 159
declutter 33
defaults 8, 35
delete
aircraft profile 48
category 82
DSC directory item 99
flight records 46
route 74
track log 88
waypoint 85
waypoint category 82
density altitude 50
depth 119
descent rate alert 28
detailed maps 10, 36, 160
details 15, 16, 19
detour 68
DGPS 124, 163
alarm 107
differential 164
differential field 163
differential GPS 163
182
digital selective calling. See DSC
direction display 119
Direct To 14, 19
display tab 114
distance and speed 119
distress calls 97–100, 168–169
drift alarm 108
DSC 96–100, 168–169
E
E6B 49–50
edit
route 75, 76, 77
waypoints 78, 79
elevation 119
emergency
aviation 19
marine 168
entering data 9, 10
erase. See delete
external power source 4
F
faster time 117
FCC 168, 169, 180
field 8
find
from 58
from a different location 58, 59
menu 57, 60
your current location 3
finding an Item in automotive or
marine mode 58–60
finding a nearby aviation point 18–22
fishing information 112
fish symbols 140
flasher 142
FlightBook 46, 170
flight log 46
flight plan 27
create 27
follow 28
locked 27
following an automotive route 66
following your flight plan 28
follow roads 62
FSS 18
fuel flow 44, 47, 77
G
GARMIN DGPS 122
getting satellite signals 4–6
going to a destination 56
go to 14, 15, 84
distress call 100
history 59
page 15, 23
point 92
position report 100
GPS 163–164
learning about 163
Off/On 5
page 6, 74
GRI chain 166
GSD 20A 135
GTX 330 159
guidance tab 118
GXM 30 antenna 132
connecting 161
H
heading 120
headphones 1
highways
avoid 117
Highway Page 114
automotive mode 70–71
data fields 71
page layout 71
setup 71
HSI 40
bug indicator 34
Hunt & Fish tab 112
I
icons 114
identifier 6, 12, 14, 18, 168, 170
information page 32, 60
initialize 3, 163
installation information 158–162
GPSMAP 496 Owner’s Manual
Index
intersection 170
J
Jeppesen database 27, 170
updates 10
K
keypad 7
L
land at closest point 19
language 116
legs, track 90
limited warranty 177
line out 1
lithium-ion 2
lithium-ion battery 1
local time 119
location 6, 65
location format 120, 167
locked route 27
log filter 113
longitude 175
LORAN TD setup 165–166
lost satellite reception 5
M
magnetic variation 120
main menu
Display Tab 114
GPS tab 4
GPSMAP 496 Owner’s Manual
Sound Tab 115
managing routes 74
managing tracks 87
managing waypoints 78
Man OverBoard 92
map
information 36, 60
MapSource 10, 160
map data 36
map datum 167
map orientation 30
Map Page
automotive mode 69
aviation mode 29–36
declutter 33
marine mode 93
setup 34
marine timer 95
maritime mobile service identity.
See MMSI
marking a waypoint 26, 63, 64, 65, 81
underwater 139
mark my location 26
maximum speed 47
MayDay 169
measuring distance 33
messages 113, 177–180
military time 119
Mils 119
MMSI 96, 168, 169
MOB 92
modes 55, 116
moon information 109
N
navigate
route 75
to point 92
track 90
navigating
distress call 100
position report 100
navigating in automotive mode 56–57
navigating in marine mode 92
navigation alarms 106
NDB 18, 170
near
current route 59, 60
destination 59, 60
next 59, 60
other 59, 60
NEAREST/FIND key 18
nearest type 45, 73
new
altitude 6
location 6, 12
waypoint 65, 81
next turn 106, 118
NMEA 122, 124, 161
north up 6, 30
no beacon signal 164
O
OBS 41
obstacle alert 28
odometer 73
off-route recalculation 118
off course 107
off road 117
on-screen button 8
options menu 9
overzoom 30
P
page layout 35
page sequence 91
panel page
aviation mode 40–43
panning the map 29, 31
pan mode 29, 31
PC interface cable 160
persistent alarm 106
plan flight 44, 77
plan route 44, 77
points of interest 58
Points tab 83
pop-up alerts 28
position 163
position data page
aviation mode 45
183
Index
position mode 29
position report 168–169
power 2, 3, 158
connector 1, 4
practice mode. See simulator mode
preferences
location 167
pressure 119
projecting a waypoint 81–86
project location 81
proximity 86
alarms 86
points tab 85
waypoint 86
R
receiver not usable 5
receiver status 5
receive satellite signals 3
record mode 87, 90
reference position 59
release hold 41
reset timer 118
reset trip 45, 73
retrace your path 90
review
route 75
waypoint 78
road 70
road routing tab 117
184
route 76, 90
add points 76
add waypoint to 80
edit 76, 77
editing 67–68
leg transition 74
options menu 74
preference 117
routes 61–62, 163
automotive mode 74–77
editing 74–77
navigating a saved route 75–77
route tab 74
RTCM 122, 124
runway criteria 22
S
safety and product information 177–
180
sail boat racing timer 95
satellite acquisition 5
saved route 27, 74
saved track 90
save present location 63
save track log 88
saving the current route 72
scanning for beacon 164
scan for a frequency 123
searching the sky 5
search history 59
selecting an approach 23–24
selecting options 9
sentences 125, 161
serial communications port 159
serial data format 121
serial number 1
setting up XM WX 127
Setup tab
Guidance tab 118
Road Routing tab 117
System tab 116
Timers tab 118
Time tab 119
Units tab 119
Welcome tab 121
set an alarm 106
set CDI scale 41
set date 119
set OBS and Hold 41
set speed and fuel 44, 77
show details 15
show map 79
signal strength 5
simulated navigation 11–12
simulator
11
smart airspace 32
sonar 135, 136–139
adjusting 137–139
on the map page 135
setting up 140, 142
understanding 143
sonar alarms 108
Sound tab 115
specifications 155
speed 40, 47
speed filter 116
split screen, sonar 139
storage 156
Sun & Moon tab 109
switch modes 13, 55, 91
system alarms 107
System tab 116
T
temperature 119, 146
terrain
alert 28
Terrain Page
aviation mode 37–39
declutter 33
terrain warning 38
text language 116
thermoclines 145
tide
chart 111
information 110
station 111
tab 110
time
GPSMAP 496 Owner’s Manual
Index
delay 165
format 119
offsets 167
tab 119
zone 119
timer 95
Timers tab 118
TIS 147, 152
limitations 148
operational procedures 153
symbology 150
TIS traffic data 159
track
legs 90
log 87, 88, 90
review page 88, 89
tab 87
TracBack 89, 90
track up 6, 30
traffic ground track 151
traffic warning window 151
transducer 140, 144
trip computer 73
trip planning 77
true airspeed 50
tuning beacon 164
turn-by-turn route 56, 66, 75
turn on and off 3
U
underwater waypoints 139
Units tab 119
unpaved roads 117
updates to jeppesen database
170
usage mode 13, 116
usage restrictions 16
USB 121
data cable 160
User Points tab 83
UTC 119
UTM/UPS 167
V
vectors 24
vertical navigation. See VNAV
vertical speed 119
VHF 168
VHF Comm 154
view details 31
VNAV 42, 43
indicator 42
profile 42
volume 3, 115
VOR 18, 170
W
WAAS 6, 116, 158, 163, 164
Warning Page 3
waterproof 156
water speed 141
water temp 108
waypoint 15, 26, 63–65, 163
categories 82, 83
create 26, 64, 81
edit 78, 79
Information Page 60
manage 78
mark 26
name 79
proximity 86
symbol 79
transition 74
weather information
finding 133
Weather tab 130
options menu 131
weight & balance 48
whiteline 138, 145
wide area augmentation system.
See WAAS
winds aloft 50
Wx 18
options 52
turning on 51
XM WX
additional information 132
options 127
radio ID 132
viewing 126
XM WX Weather
finding weather information 133
X symbol on terrain 37
Z
zoom 30
X
xImage 160
XM Audio Page 51
favorites 53
mute 54
GPSMAP 496 Owner’s Manual185
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 2006–2007 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, USA
Garmin (Europe) Ltd.
Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9RB UK
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
www.garmin.com
Part Number 190-00693-00 Rev. E