Owner`s manual | Garmin GPSMAP 400 GPS Receiver User Manual

GPSMAP 400 series
owner’s manual
© 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® is a trademark of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. GPSMAP®, AutoLocate®, BlueChart®, BlueChart® g2 Vision™,
TracBack®, BlueChart®, MapSource®, and Ultrascroll™ are trademarks of Garmin Ltd. or its subsidiaries. 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.
March 2007
Part Number 190-00754-00 Rev. B
Printed in Taiwan
This manual includes information for the following products:
GPSMAP® 420/420s
GPSMAP® 430/430s/430x/430sx
GPSMAP® 440/440s/440x/440sx
GPSMAP® 450/450s
Tips and Shortcuts
• Press HOME from any screen to return to the Home screen.
• Press MENU from any of the main screens to access
advanced settings.
• Press and release the POWER key to adjust the display
Manual Conventions
In this manual, when you are instructed to select an item, small
arrows (>) appear in the text. They indicate that you should highlight
a series of items on the screen using the ROCKER, and press
the SELECT key after each item. For example, if you see “select
Charts > Navigation Chart,” you should highlight Charts, and
press SELECT. Then highlight Navigation Chart, and press
SELECT again.
Quick Links
Turning the Unit On or Off: page 2.
Acquiring GPS Satellite Signals: page 4.
Inserting and Removing SD Cards: page 5.
Restoring Factory Settings: page 5.
Using the Navigation Chart: page 7.
Changing the Chart Settings: page 16.
Navigating to a Destination: page 19.
Creating a Waypoint: page 21.
Configuring System Settings: page 29.
Using Sonar: page 35.
Installing the Unit: page 39.
Alarms and Messages: page 55.
GPSMAP® 400 Series Owner’s Manual
Table of Contents
Tips and Shortcuts.................................................................... i
Manual Conventions................................................................. i
Quick Links................................................................................ i
Warnings.................................................................................. iv
Important Information............................................................. iv
Getting Started......................................................................1
Unit Overview........................................................................... 1
Turning the Unit On or Off....................................................... 2
Adjusting the Backlight........................................................... 2
Using the Keypad..................................................................... 3
Acquiring GPS Satellite Signals............................................. 4
Using Simulator Mode............................................................. 4
Restoring Factory Settings..................................................... 5
Viewing System Information................................................... 5
Inserting and Removing SD Cards......................................... 5
Understanding the Home Screen............................................ 6
Using Charts.........................................................................7
Using Fishing Charts............................................................. 13
Enabling High Resolution Satellite Imagery........................ 14
Viewing Aerial Photos............................................................ 15
Viewing Current Station Information.................................... 16
Detailed Road and POI Data.................................................. 16
Using Automatic Guidance.................................................... 16
Changing the Chart Settings................................................. 16
Using the Chart/Sonar Screen.............................................. 18
Where To?...........................................................................19
Navigating to a Destination................................................... 19
Creating and Using Waypoints............................................. 21
Creating and Using Routes................................................... 23
Viewing Information...........................................................25
Viewing Numbers................................................................... 25
Viewing Tide Station Information.......................................... 26
Viewing Current Information................................................. 26
Viewing Celestial Information............................................... 27
Viewing User Data.................................................................. 27
Viewing Other Boats.............................................................. 28
Using the Navigation Chart..................................................... 7
Using BlueChart g2 Vision.................................................... 11
Using Mariner’s Eye 3D......................................................... 12
Using Fish Eye 3D.................................................................. 13
GPSMAP® 400 Series Owner’s Manual
Configuring the Unit...........................................................29
Configuring System Settings................................................ 29
Changing Units of Measure................................................... 29
Configuring Communications Settings................................ 30
Setting Alarms........................................................................ 31
Configuring My Boat.............................................................. 32
Configuring Other Boats....................................................... 34
Using Sonar........................................................................35
Understanding the Full Screen............................................. 35
Understanding the Flasher.................................................... 35
Understanding the Split Freq Screen................................... 36
Understanding The Split Zoom Screen................................ 36
Understanding the Temp Log Screen................................... 37
Setting Up Sonar.................................................................... 37
Advanced Sonar Settings...................................................... 38
Specifications......................................................................... 53
Product Registration.............................................................. 54
Caring for the Unit.................................................................. 54
Alarms and Messages............................................................ 55
Weather Data Warranty.......................................................... 59
XM Satellite Radio Service Agreement................................. 60
Software License Agreement................................................ 60
Limited Warranty.................................................................... 61
FCC Compliance..................................................................... 62
Industry Canada Compliance................................................ 62
Optional Accessories............................................................. 62
Installing The Unit..............................................................39
Step 1: Select a Location....................................................... 39
Step 2: Mount the Unit........................................................... 40
Step 3: Install the Transducer............................................... 42
Step 4: Install the Wiring Harness........................................ 48
Step 5: Test the Installation................................................... 51
GPSMAP® 400 Series Owner’s Manual
Failure to avoid the following potentially hazardous situations could
result in an accident or collision resulting in death or serious injury.
When navigating, carefully compare information displayed on
the unit to all available navigation sources, including information
from visual sightings, and maps. For safety, always resolve any
discrepancies or questions before continuing navigation.
Use the electronic chart in the unit only to facilitate, not to replace,
the use of authorized government charts. Official government charts
and notices to mariners contain all information needed to navigate
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.
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.
Hg - lamps inside this product contain mercury and must be recycled or disposed of according to local,
state, or federal laws.
For more information go to:
Important Information
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.
The California Electronic Waste Recycling Act of 2003 requires the recycling of certain electronics. For more information on the applicability to this product, see
GPSMAP® 400 Series Owner’s Manual
Getting Started
Getting Started
Unit Overview
External GPS
GXM 31 antenna
SD card slot
GPSMAP 440sx Shown
GPSMAP® 400 Series Owner’s Manual
Getting Started
Turning the Unit On or Off
Press and hold the POWER key until the unit beeps and the
Garmin screen appears. When the Warning screen appears, press
SELECT to open the Home screen.
Note: The first time you power on your unit, you must go
through a setup sequence. See page 51 for details.
Adjusting the Backlight
1. Press and release the
2. Select Light.
POWER key.
Press left or right
on the ROCKER
to manually adjust
the backlight.
GPSMAP® 400 Series Owner’s Manual
Getting Started
To switch between Day and Night mode:
1. Press and release the POWER key.
2. Select Day/Night Mode.
3. Press left or right on the ROCKER to switch between modes.
Using the Keypad
RANGE (-/+)
POWER/BACKLIGHT—Press and hold to turn the unit on or off;
press and release to adjust the backlight and Day/Night modes.
RANGE (-/+)—Press to adjust the range of the sonar; zoom in or
out on a chart.
ROCKER—Press up, down, left, or right to move through menus,
highlight fields, and enter data.
MARK—Press to mark a waypoint.
SELECT—Press to select highlighted items and confirm onscreen messages.
HOME—Press to return to the Home screen.
MENU—Press to access additional settings and configuration
options; press to return to the previous screen when indicated.
GPSMAP® 400 Series Owner’s Manual
Getting Started
Acquiring GPS Satellite Signals
When you turn on the unit, the GPS receiver must collect satellite
data and establish its current location. If the unit cannot establish a
location, the Initialize Position screen appears.
Using Simulator Mode
Simulator Mode turns the GPS receiver off for use indoors or for
practice. The unit does not track satellites in Simulator Mode.
Caution: Do not try to navigate using Simulator Mode
because 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.
To turn on Simulator Mode
1. From the Home screen select Configure > System >
2. Select Setup to set speed, track control, and position.
When the unit acquires satellite signals, the signal strength bars
at the top of the Home screen are green
. When the unit loses
satellite signals, the green bars disappear
For more information about GPS, visit the Garmin Web site at
GPSMAP® 400 Series Owner’s Manual
Getting Started
Restoring Factory Settings
You can restore your unit to the original factory settings.
Caution: This procedure deletes any information you have
To restore factory settings:
1. From the Home screen, select Configure > System >
System Information.
2. Select Factory Settings.
3. Select Yes to restore all factory settings. Otherwise, select
No to cancel.
Inserting and Removing SD Cards
Your unit supports Secure Digital (SD) cards. Insert optional
BlueChart® g2 Vision™ SD cards to view high-resolution satellite
imagery, and aerial reference photos of ports, harbors, marinas, and
other points of interest. Insert blank SD cards to transfer data such as
waypoints, routes, and tracks to another compatable Garmin unit or a
PC. The SD card slot is located on the bottom-right corner of the unit.
To insert the SD card, press it in until it clicks.
Viewing System Information
You can view your unit’s software version, basemap version, and
unit ID number. You may need this information to update the system
software or purchase additional map data information.
From the Home screen, select Configure > System > System
To remove the SD card, press in on the SD card. The card pops out.
GPSMAP® 400 Series Owner’s Manual
Getting Started
Understanding the Home Screen
Use the Home screen to access all other screens.
Note: Options on this screen vary based on the unit type.
• Charts—access Navigation, Fishing, Mariner’s Eye 3D, and
Fish Eye 3D charts (page 7).
Note: On the GPSMAP 420/420s, 440/440s/440x/440sx
units, you must insert an optional BlueChart® g2 Vision™
preprogrammed SD card to access the Fishing and Fish Eye 3D
NOTE: The GPSMAP 430/430s/430x/430sx units do not need
additional cards to use the Fish Eye 3D charts, and do not have
the option to use the Fishing Chart (all depth contours and depth
soundings are available on the Navigation Chart).
• Sonar—access sonar information (page 35).
Note: This option is available only if you have a unit with a
built-in sounder or a Garmin sonar module connected.
• Chart/Sonar—set up the screen to view a chart and sonar in a
split screen (page 18).
• Where To?—access navigation features (page 19).
• Information—view information including tides, currents,
celestial data, user data, and information about other boats
(page 25).
• Configure—access unit and system settings (page 29).
GPSMAP® 400 Series Owner’s Manual
Using Charts
Using Charts
Your unit has a worldwide imagery map, a built-in detailed map
of US inland lakes, or BlueChart g2 cartography for either the US
shoreline or a specific country.
• Navigation Chart—displays all relevant navigation data
available on your preloaded maps, including buoys, lights, cables,
depth soundings, marinas, and tide stations in an overhead view.
• Mariner’s Eye 3D—a bird’s eye view from above and behind
your boat; for a visual navigation aid.
Note: If you are using a GPSMAP 420/420s you must insert
an optional BlueChart g2 Vision preprogrammed SD card to
view detailed navigation and mariner’s eye 3D charts.
Fishing Charts and Fish Eye 3D views are available when using
optional Blue Chart® g2 Vision™ preprogrammed SD cards.
• Fishing Chart—removes navigational data from the preloaded
map, while leaving the bottom contours and depth soundings.
(This is not available on the 430/430s/430x/430sx - all contour
lines and depth soundings appear on the navigation chart.)
• Fish Eye 3D—an underwater view that visually represents the
sea floor or lake bottom according to the chart’s information.
(This is available for select lakes on 430/430s/430x/430sx
units without an additional card.)
GPSMAP® 400 Series Owner’s Manual
Using the Navigation Chart
Use the navigation chart to plan your course, view map information,
and as a navigational aid.
Note: If using a GPSMAP 420/420s, you must insert an
optional BlueChart g2 Vision preprogrammed SD card for your
region to view detailed navigation charts.
To access a navigation chart, from the Home screen, select Charts > Navigation Chart.
Your boat
Tide station
Zoom scale
Navigation Chart with g2 Vision
Using Charts
Navigation Chart Settings
To access additional settings or options for the navigation chart,
press MENU.
Full Screen Map (Show Numbers)—view the navigation or fishing
chart in full-screen mode, without numbers. Select Show Numbers
to view numbers again.
NEXRAD—turn NEXRAD weather data on or off.
Note: You must plug the optional GXM 31 antenna into the
XM port on the back of the unit and have a subscription to
XM WX Satellite Weather to view NEXRAD data. XM is only
available on the GPSMAP 430x/430sx/440x/440sx units. For
more information on XM weather, see the GXM 31 Owner’s
Overlay Numbers—show or hide cruising, sailing, navigation, and
fishing numbers on the navigation or fishing chart.
Chart Setup—customize the navigation chart. See page 16.
Chart Notes—access detailed chart information.
Full Screen Map
Show Numbers
GPSMAP® 400 Series Owner’s Manual
Using Charts
Understanding Chart Data
BlueChart g2 Vision and the US inland lake electronic charts use
graphic symbols to denote map features. Some common symbols
you might see include, but are not limited to, the following*:
Dangerous Rock
Exposed Rock
Pilot Boarding Area
Airport/Seaplane Base
Anchorage Berth
Precautionary Area
Anchoring Prohibited
Radio Report Point
Exposed Wreck
Recommended Anchorage
Fishing Harbor
Rescue Station
Fishing Prohibited
Tide Station
Yacht Harbor
Current Station
Marine Services
*Some symbols might appear differently on your Garmin unit.
Other features common to most charts include depth contour
lines (with deep water represented in white), intertidal zones, spot
soundings (as depicted on the original paper chart), navigational aids
and symbols, and obstructions and cable areas.
Panning the Navigation Chart
Use the map pointer ( ) to pan away from your current location,
and scroll to other areas on the navigation chart. As you pan past
the edge of the current map display, the screen scrolls forward to
provide continuous map coverage. The position icon ( ) stays at
your present location.
As you move the map pointer, you can view the distance and
bearing from your current location, and the map pointer’s location
coordinates in the lower-right corner of the map.
To pan the map, press up, down, right, or left on the ROCKER.
To stop panning, press MENU, and then select Stop Panning.
GPSMAP 400 Series Owner’s Manual
Using Charts
Zooming In and Out on the Map
The Range (+/-) keys control the zoom level, indicated by the scale
at the bottom of the navigation chart (
). The bar under the
number represents that distance on the map.
2. Select the item. If more than one item is in the area, select
Review, and then select the item.
Accessing Additional Object Information
Use the map pointer (
items and waypoints.
) to view information about on-screen map
To access additional object information:
1. On the navigation chart, highlight an item with the map
pointer, and press SELECT.
GPSMAP® 400 Series Owner’s Manual
Using Charts
Viewing Tide Station Information
Tide station information appears on the chart with a detailed icon
showing the relevant tide level. You can view an in-depth graph
for a tide station to help predict the tide level at different times or
different days.
Use the map pointer (
and press SELECT.
) to highlight a tide station icon (
Relevant tide level
For more information about tides, see page 26.
Using BlueChart g2 Vision
Optional BlueChart g2 Vision preprogrammed SD cards allow
you to get the most out of your unit. In addition to detailed marine
charting, BlueChart g2 Vision has the following features:
• Mariner’s Eye 3D—a bird’s eye view from above and behind the
boat, for a more visual navigation aid. The BlueChart g2 Vision
Mariner’s Eye 3D is more detailed than the preloaded data.
• Fish Eye 3D—an underwater view that visually represents the
sea floor according to the chart’s information.
• Fishing Charts—view the chart without navigational data,
leaving only the bottom contours and depth soundings. This
chart works best for offshore deep-sea fishing.
• High Resolution Satellite Imagery—high resolution satellite
images are provided for a realistic view of the land and water
on the navigation chart.
• Aerial Photos—view marinas and other navigationally
significant aerial photos to help you visualize your surroundings.
• Detailed Roads and POI data—view roads, restaurants, and
other points of interest (POIs) along the shore.
• Current Data—view current station information.
• Auto Guidance—automatic passage planning software that
helps you determine the best course to your destination.
GPSMAP® 400 Series Owner’s Manual11
Using Charts
Using Mariner’s Eye 3D
Mariner’s Eye 3D provides a bird’s eye view from above and behind
the boat (according to your course), and provides a visual navigation
aid. This view is helpful when navigating tricky shoals, reefs,
bridges, or channels, and is beneficial when trying to identify entry
and exit routes in unfamiliar harbors or anchorages.
Mariner’s Eye 3D Settings
To access additional settings or options from the Mariner’s Eye 3D
screen, press MENU.
Colors­—choose between Normal
(Default), Water Hazard, and
All Hazard. The Normal setting
highlights the land as you would
see it from the water. The Hazard
settings indicates shallow water
and land with a color scale. Blue
indicates deep water, yellow is
shallow water, and red is very
shallow. The Water Hazard setting
indicates land in green, and the All
Hazard setting shows land as dark
Rings—toggle the range rings on
or off.
Mariner's Eye 3D
Navigation Chart
The RANGE (+) key moves the view closer to your boat and lower to
the water, while the RANGE (-) key moves the view away from the
boat. This is indicated by the scale (
) at the bottom of the screen.
Mariner’s Eye 3D
(Water Hazard Colors)
Safe Depth—adjust the depth at which red indicates shallow water.
Nav Lane Width—adjust the width of the course line drawn when
Numbers—show or hide cruising, navigation, fishing, and sailing numbers.
GPSMAP® 400 Series Owner’s Manual
Using Charts
Using Fish Eye 3D
Using the depth contour lines of the BlueChart g2 Vision
cartography, Fish Eye 3D provides an underwater view of the sea
floor or lake bottom.
Fish Eye 3D Settings
Use the fishing chart for a
detailed, unobstructed view of
the bottom contours and depth
soundings on the chart.
The fishing chart uses detailed
bathymetric data on the
BlueChart g2 Vision SD card,
and works best for offshore
deep-sea fishing.
To access additional settings
or options for the Fish Eye 3D,
screen, press MENU.
Sonar Cone—turn a cone on or
off that shows the area covered by
your transducer.
Sonar Data—visually show
the sonar readings received
by your transducer for the
best combination of sonar and
mapping. The setting is either on
or off.
Using Fishing Charts
To view the fishing chart,
from the Home screen select Charts > Fishing Chart.
Fish Eye 3D
Tracks—turn the track log on or
Numbers—show or hide cruising, navigation, or fishing numbers on
the chart.
Note: An optional BlueChart g2 Vision preprogrammed SD card
for your region is needed to view detailed fishing charts.
NOTE: Because the detailed bathymetric information used
by the fishing chart is recorded specifically for off-shore
applications, the fishing chart is not available on the
GPSMAP 430/430s/430x/430sx (inland) units.
GPSMAP® 400 Series Owner’s Manual13
Using Charts
Enabling High Resolution Satellite Imagery
You can overlay high-resolution satellite images on the land, sea, or
both portions of the navigation chart when using a preprogrammed
BlueChart g2 Vision SD card.
NOTE: This feature is preloaded on the GPSMAP
430/430s/430x/430sx units.
To enable satellite imagery:
1. While viewing the Navigation Chart, press MENU.
2. Select Chart Setup > Appearance > Photos.
3. Select one of the following options:
• Off—standard chart information is shown on the map.
• Land Only—standard chart information is shown on
water with photos overlaying the land.
• On—photos overlay both the water and the land at a
specified opacity. The higher you set the percentage, the
more the satellite photos will cover both land and water.
Photo Overlay Off
Land Only Photo Overlay
Photo Overlay at 50%
Photo Overlay at 100%
NOTE: When enabled, the high resolution satellite images are
only present at lower zoom levels. If you cannot see the high
resolution images in your BlueChart g2 Vision region, either
zoom in further using the RANGE (+) key, or set the detail level
higher (see page 17).
GPSMAP® 400 Series Owner’s Manual
Using Charts
Viewing Aerial Photos
Preprogrammed BlueChart g2 Vision SD cards contain aerial
photographs of many landmarks, marinas, and harbors. Use these
photos to help orient yourself to your surroundings, or to help
acquaint yourself with a marina or harbor prior to arrival.
To access aerial photos from the navigation chart:
On the navigation chart, use
the ROCKER to highlight a
camera with the pointer.
➋ Select Aerial Photo.
➌ Select View Fullscreen.
Aerial Photo
Note: Use the RANGE (+/-) keys to zoom in and out while
viewing the aerial photo on the full screen.
GPSMAP® 400 Series Owner’s Manual15
Using Charts
Viewing Current Station Information
If current stations are available in your g2 Vision
region, they appear on the navigation chart as a
highlighted arrow. This detailed icon shows the
current’s speed and direction at a glance.
Detailed Road and POI Data
Current Station
Automatic Guidance automatically creates and suggests passage
based on available BlueChart g2 Vision chart information. See
page 32 for instructions on setting up Automatic Guidance for your
boat. The “Where To?” section on page 19 has more information on
how to use Automatic Guidance.
To change chart settings, from the Home screen, select Charts >
Chart Setup.
Orientation—change the perspective of the map display:
BlueChart g2 Vision contains detailed road and POI data, which
includes highly detailed coastal roads and points of interest (POIs)
such as restaurants, lodging, local attractions, and more. For
instructions on searching for, and navigating to, these POIs, see the
“Where To?” section beginning on page 19.
Using Automatic Guidance
Changing the Chart Settings
• North Up—sets the top of the map display to a north heading.
• Track Up—sets the map display to the current track heading.
• Course Up—sets the map so the direction of navigation is
always up and turns the course line vertical on the screen.
Heading line
GPSMAP® 400 Series Owner’s Manual
Using Charts
Heading Line—draws an extension from the bow of the boat in the
direction of travel.
• Off—turn off the heading line.
• Distance—sets the distance to the end of the heading line.
• Time—sets the amount of time until you reach the end of the
heading line.
Chart Borders—turn on chart borders if you load BlueChart g2
Vision maps and you want to see what areas the maps cover.
Tracks—hide (off) or show (on) tracks on the chart.
Changing the Chart Appearance
From the Home screen, select Charts > Chart Setup >
Detail—adjust the amount of detail shown on the map.
Press left on
the ROCKER to
decrease map
Press right on
the ROCKER to
increase map
Appearance—customize how items are shown on the map.
Photos—set the high resolution satellite images to on, off, or land
only. (See page 14 for more information.)
Spot Depths—turn on spot soundings and set a dangerous depth.
Light Sectors—adjust the drawing of light sectors on the map.
Symbols—select the navaid symbol set (NOAA or IALA).
Symbol Size—adjust the size of the symbols shown on the map.
GPSMAP 400 Series Owner’s Manual17
Using Charts
Using the Chart/Sonar Screen
Use the Chart/Sonar screen to view the navigation chart, fishing
chart, Mariner’s Eye 3D, or Fish Eye 3D and sonar at the same time.
To access additional settings or options for the chart/sonar screen,
press MENU.
To view a split chart/sonar screen:
1. From the Home screen, select Chart/Sonar
2. Select the type of chart on the split screen.
chart screen
Mariner’s Eye 3D/Sonar
Navigation/Sonar Combination
Note: The Chart/Sonar screen, like the Sonar screen, is only
available when using a sonar capable unit with a transducer
GPSMAP® 400 Series Owner’s Manual
Where To?
Where To?
Use the Where To? option on the Home screen to search for, and
navigate to, nearby fuel, repairs, marinas, ramps, waypoints, and
Note: You have to create waypoints and routes before you can
navigate to them.
You can navigate to a destination using one of three methods:
Go To, Route To, or Guide To.
Navigating to a Destination
You can search for, and navigate to, nearby destinations including
fuel, repairs, marinas, waypoints, and routes.
To begin navigating:
1. From the Home screen, select Where To?
2. Select the marine service category to which you want to
navigate. The unit shows the list of the 50 nearest locations
and the distance to each.
• Go To—takes you directly to the destination.
• Route To—creates a route from your location to a destination,
allowing you to add turns to the route.
• Guide To—searches BlueChart g2 Vision chart data to
suggest the best path to your destination.
Caution: Guide To does not assure obstacle and bottom
clearance. For safety, always resolve any discrepancies or questions
before continuing navigation.
“Where To?” Categories
Nearest “Fuel” Search
GPSMAP® 400 Series Owner’s Manual19
Where To?
3. Select the marine service item to which you want to navigate.
A screen containing information about the selected marine
service appears.
4. Select Navigate To.
5. Select Go To or Route To.
Select Guide To when using a preprogrammed BlueChart g2
Vision card to use Auto Guidance.
6. Follow the colored line on the screen to the destination.
To stop navigating:
Press MENU, and then select Stop Navigating.
To search for a destination by name:
1. From the Home screen, select Where To? > Search by
2. Press up or down on the ROCKER to select a number or
character; press left or right to move fields.
3. Press SELECT to view the 50 nearest destinations that
contain your search criteria.
GPSMAP® 400 Series Owner’s Manual
Where To?
Creating and Using Waypoints
You can store up to 1,500 alphanumeric waypoints with a userdefined name, symbol, depth, and water temp for each waypoint.
When you create a waypoint, you can designate it as an MOB (Man
OverBoard). This marks the point and sets a course back to the
marked location. When an MOB is active, an MOB waypoint with
an international MOB symbol is created and the unit is on an active
navigation to that point.
To create a new waypoint:
1. Move the map pointer to the location you want, and press
2. Select Create Waypoint.
To mark your location:
1. From any screen, press MARK.
2. Select Back to return to the chart, or select MOB to
designate the waypoint as an MOB point.
Note: Pressing the MARK key only creates a waypoint at
your present location.
3. Select one of the following:
• Edit Waypoint—customize the waypoint attributes.
• Delete—delete the waypoint.
• Navigate To—go to the waypoint.
• Back—return to the navigation chart.
GPSMAP® 400 Series Owner’s Manual21
Where To?
To edit a waypoint:
1. Create a new waypoint or select a waypoint on the navigation
2. Select Edit Waypoint.
3. Select the waypoint attribute you want to change (Name,
Symbol, Depth, Water Temp, or Position).
To move the waypoint on the navigation chart:
1. Select Edit Waypoint > Position > Use Chart.
2. Use the ROCKER to move the waypoint to a different
location, and press SELECT.
To view a list of all waypoints:
From the Home screen, select Information > User Data >
GPSMAP® 400 Series Owner’s Manual
Where To?
Creating and Using Routes
You can create and store up to 20 routes, with up to 250 waypoints
To create a route in another location:
1. From the Home screen, select Information > User Data >
Routes > New Route.
To create a route from your present location:
1. Move the map pointer to a destination, and press SELECT.
2. Select Navigate To > Route To.
Creating a New Route
Adding a Turn to a Route
3. Use the ROCKER to add a turn, and press SELECT. Repeat
this step to add additional turns.
4. Press MENU to cancel or to begin navigating the route.
2. Use the ROCKER to select the route’s starting point, and
press SELECT.
3. Use the ROCKER and SELECT keys to add additional turns.
4. Press MENU to cancel, edit, or navigate the route.
GPSMAP® 400 Series Owner’s Manual23
Where To?
To edit a route
1. From the Home screen, select Information > User Data >
2. Select the route to edit.
To delete a route:
1. From the Home screen, select Information > User Data >
2. Select the route to delete, and then select Edit Route.
3. Select Delete.
3. Select Edit Route. You can edit the route name, turns, or
delete the route.
GPSMAP® 400 Series Owner’s Manual
Viewing Information
Viewing Information
Use the Information screen to access information about user data,
tides, currents, celestial data, and other boats.
Viewing Numbers
To customize the numbers screen:
From the Home screen, select Information > Numbers.
Press Menu, and then press SELECT.
Select the number of fields to show (3, 4, 5, or 6).
Select information to show in each field.
You can view and customize numerical data including depth, GPS
information, and navigation information. You can customize the
number of fields shown and the type of information shown in each
field. You can display up to six fields of numerical information.
To view the numbers screen, from the Home screen, select
Information > Numbers.
GPSMAP® 400 Series Owner’s Manual25
Viewing Information
Viewing Tide Station Information
To view tide information, select Tides from the Information screen,
then select a tide station from the list.
Tide station
Viewing Current Information
Use the Current Prediction screen to view information for currents.
To view current prediction information, select Currents from the
Information screen, then select a Current Station from the list.
Local time
High tide curve
Max. level
Current tide
Low tide curve
Flood Current
(current heading
toward shore)
Max. level
Local time
Ebb Current
(current heading
away from shore)
Tide Prediction Chart
• To view the Tide Prediction
Report, select Show Report.
• To return to the Tide Prediction
Chart, select Show Tide
Note: You can select both Tide and Current Station
information directly from the navigation chart. See pages 11
and 16 for more information.
Tide Prediction Report
GPSMAP® 400 Series Owner’s Manual
Viewing Information
Viewing Celestial Information
Use the Celestial screen to view celestial data for sun and moon
rise/set, moon phase, and approximate sky view location of the sun
and moon.
To view celestial information, on the Information screen, select
To view user data, from the Home screen, select Information >
User Data.
Waypoints—view a list of all saved waypoints.
Routes—view a list of saved routes.
Tracks—view a list of saved tracks.
Data Transfer—transfer waypoints, routes, and tracks to and from
an SD card.
Clear User Data—erase all user waypoints, routes, and tracks.
Moon phase
Sky view
Viewing User Data
Press left or right
on the ROCKER
to adjust the time.
To transfer data to or from an SD card:
1. Insert an SD card into the SD card slot on the front of the
2. From the Home screen, select Information > User Data >
Data Transfer.
3. Complete one of the following:
• Select Save to Card to save waypoints, routes, and
tracks to the SD card.
• Select Merge from Card to transfer data from the SD
card to the unit and combine it with existing GPS data.
• Select Replace From Card to overwrite items on your
GPSMAP® 400 Series Owner’s Manual27
Viewing Information
Viewing Other Boats
To view information about other boats, from the Home screen, select
Information > Other Boats.
Note: To view information about other boats, your
GPSMAP 400 series unit must be connected to an external AIS
(Automatic Identification System) or DSC (Digital Selective
Calling) device. See page 30 for more information.
AIS List—view information about all of the boats your unit
is monitoring. The AIS list shows the MMSIs or (if the boat is
broadcasting it) names of the AIS boats, and is sorted by range. The
boat nearest to your boat appears at the top of the list.
DSC Log—view a list of all DSC calls, sorted by most recent,
sender, or by type (distress calls or position reports).
• View Most Recent—view the seven most recent DSC calls
received, sorted and displayed chronologically by time and
date. Calls with identical time and date information show the
same information in the list.
• View By Sender—view an alphanumerical list of senders.
• View By Type—view the seven most recent distress calls or
position reports, sorted chronologically.
DSC Call List—view the 100 most recent calls. The DSC Call List
shows the most recent call from a boat. If a second call is received
from the same boat, it replaces the first call in the Call List.
Directory—view a list of all DSC entries. You can view by name or
by MMSI. You can also add an entry.
Setup—turn AIS and DSC on or off and set a safe zone for your
GPSMAP® 400 Series Owner’s Manual
Configuring the Unit
Configuring the Unit
Use the Configure screen to configure unit settings.
Configuring System Settings
To change general system settings, from the Home screen, select
Configure > System.
Simulator—turn Simulator Mode on or off and set Simulator Mode
options. (If you set the unit into a Store Demonstration mode during
the initial unit setup, this setting will be named Demo.)
Language—select the on-screen language.
Beeper/Display—select Beeper to set when the unit makes audible
sounds. The three settings are Off, Alarms Only (default), and On
(keys and alarms). Select Display to switch between Day or Night
modes and brighten or darken the backlight.
GPS—view GPS satellites, turn WAAS/EGNOS on or off, and
initialize the GPS receiver.
System Information—view system information and restore factory
Event Log—shows a list of system events.
Overlay Numbers—set the styles for Wind and Next Turn numbers.
Changing Units of Measure
To change units of measure, from the Home screen, select
Configure > Units.
System Units—this is a quick global setting that defines most of
the individual units of measure, listed below, at once. Statute
(mh, ft, ºF), Metric (kh, m, ºC), or Nautical (kt, ft, ºF).
Depth—individually set the units of measure for depth to Feet (ft),
Fathoms (fa), or Meters (m).
Temperature—individually set units of measure for temperature to
Fahrenheit (ºF) or Celsius (ºC).
Note: You must be receiving NMEA Sonar depth data or using a
Garmin sounder module to view depth and temperature information.
Dist, Spd, Elev—individually set the units of measure for distance,
speed, and elevation readings.
Heading—set the reference used in calculating heading information.
Position—change the coordinate system in which a given location
reading appears. The default format is hdddºmm.mmm'. Only
change the position format if you are using a map or chart that
specifies a different position format.
Time—set the time format (12 hour, 24 hour, or UTC time format),
time zone, and indicate whether to use Daylight Saving Time.
GPSMAP® 400 Series Owner’s Manual29
Configuring the Unit
Configuring Communications Settings
To change the communications settings, from the Home screen,
select Configure > Communications.
2. Select a setting (Sounder, Route, System, or Garmin).
3. Select a NMEA output sentence.
Serial Port 1/Serial Port 2—select the input/output format to use
when connecting your unit to external NMEA devices, a personal
computer, or other Garmin devices.
• Garmin Data Transfer—the proprietary format used to
upload, download, or exchange data with a computer or
another Garmin unit.
• Garmin Remote Sonar—allows you to connect a Garmin
GSD 21 or GSD 22 serially.
• NMEA In/NMEA Out—supports the input or output of
standard NMEA 0183 data, DSC, and sonar NMEA input
support for the DPT, MTW, and VHW sentences.
• NMEA High Speed—supports the input or output of standard
0183 data for most AIS receivers.
• None—provides no interfacing capabilities.
NMEA Setup—enable or disable NMEA output sentences for
sounder, route, system, and Garmin NMEA settings.
To enable or disable NMEA output sentences:
1. From the Home screen, select Configure >
Communications > NMEA Setup.
4. Select Off to disable, or select On to enable the NMEA
output sentence.
Posn. Precision—adjust the number of digits (Two Digits,
Three Digits, or Four Digits) to the right of the decimal point for
transmission of NMEA output.
Waypoint—select how the unit outputs waypoint identifiers (Names
or Numbers).
GPSMAP® 400 Series Owner’s Manual
Configuring the Unit
Setting Alarms
You can set the unit to sound an audible alarm when certain
conditions are met. By default, all alarms are turned off.
To set an alarm:
1. From the Home screen, select Configure > Alarms.
2. Select an alarm category (Navigation, System, Sonar, or
Weather Warnings).
3. Select an alarm.
4. Select On to turn the alarm on, and then use the ROCKER to
specify alarm information.
Setting Navigation Alarms
To set a navigation alarm, from the Home screen, select Configure
> Alarms > Navigation.
Anchor Drag—set an alarm to sound when you exceed a specified
drift distance.
Arrival—set an alarm to sound when you are within a specified
distance or time from a destination waypoint.
Off Course—set an alarm to sound when you are off course by a
specified distance.
Setting System Alarms
Press up or down
on the ROCKER
to increase or
To set a system alarm, from the Home screen, select Configure >
Alarms > System.
Clock—set an alarm using the system clock. The unit must be on for
the clock alarm to work.
Battery—set an alarm to sound when the battery reaches a userdetermined low voltage.
Press left or right
on the ROCKER
to move fields.
GPSMAP® 400 Series Owner’s Manual
GPS Accuracy—set an alarm to sound when the GPS location
accuracy falls outside the user-determined value.
Configuring the Unit
Setting Sonar Alarms
Configuring My Boat
Shallow Water/Deep Water—set an alarm to sound when the depth
is less than or greater than the specified value.
Auto Guidance—set the Auto Guidance parameters for your boat:
To set a sonar alarm, from the Home screen, select Configure >
Alarms > Sonar.
Water Temp—set an alarm to sound when the transducer reports
a temperature that is 2° F (1.1° C) above or below the specified
Fish—set an alarm to sound when the unit detects a suspended
target of the specified symbols.
Note: You must have a transducer connected. If your unit does
not have a built-in sounder, then you must install a GSD 21 or
GSD 22 sounder module to receive sonar information.
Setting Weather Alarms
To set a weather alarm, from the Home screen, select Configure >
Alarms > Weather Alarms.
Note: You must have a subscription to XM WX Weather and
the optional GXM 31 antenna plugged into the XM port on the
back of your unit to view weather information. XM Weather is
available only on GPSMAP 430x/430sx/440x/440sx units. See
the GXM 31 Owner’s Manual for more information.
To configure settings for your boat, from the Home screen, select
Configure > My Boat.
• Safe Depth—set the minimum depth (referred to the chart
depth datum) to allow when calculating an autoguidance path.
• Safe Height—set the minimum height (referred to the chart
height datum) of a bridge that your boat can safely travel
Keel Offset—offset 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. You can enter a negative number to compensate for
a large vessel that may draw several feet of water.
To adjust the Keel Offset:
1. From the Home screen, select Configure > My Boat > Keel
2. Use the ROCKER to set the value of the keel offset.
3. Press SELECT to accept the number.
Note: Press MENU to cancel your changes and return to the
My Boat screen.
GPSMAP® 400 Series Owner’s Manual
Configuring the Unit
Transducer at Surface
Enter a (+) positive number
to show depth from the
bottom of the keel.
• Calibrate Water Speed—to use a speed sensing transducer,
use this menu to calibrate the speed sensor. If you do not have
a speed sensing transducer, this menu does not appear.
To calibrate the speed sensor:
Transducer at Bottom
of Keel
Enter a (-) negative
number to show depth
from the surface.
1. From the Home screen, select Configure > My Boat >
Transducer > Calibrate Water Speed.
2. Bring the boat to cruising speed. Note your top speed, and
then stop the boat.
3. Highlight OK, and press SELECT.
Keel Offset
Transducer—select the transducer type (Dual Frequency or Dual
Beam), set the temperature source, sonar cone angles, and calibrate
water speed.
• Temp Source—set the temperature source (Transducer or NMEA).
• Sonar Cone Angles—when using a transducer other than the
standard Garmin transducer, you can set the angle, in degrees,
of the sonar cone so it is accurately depicted on the Fish Eye
3D screen.
Note: If the boat is not moving fast enough or the speed sensor
is not registering a speed, a “Speed Too Low” message appears.
Highlight OK, press SELECT, and safely increase boat speed. If
you get the message again, stop the boat and make sure the speed
sensor wheel is not stuck. If the wheel turns freely, check the
cable connections. If you continue to get the message, contact
Garmin Product Support.
Note: The Sonar Cone Angles setting does not affect a
standard Garmin transducer, and should only be used to match
the specifications of a non-standard transducer.
GPSMAP® 400 Series Owner’s Manual
Configuring the Unit
Configuring Other Boats
To configure settings for boats other than your own, from the Home
screen, select Configure > Other Boats.
AIS—turn AIS (Automatic Identification System) on or off. AIS
alerts you to area traffic by providing boat IDs, position, course, and
speed for boats equipped with a transponder within range.
DSC—turn DSC (Digital Selective Calling) on or off.
NOTE: To configure AIS or DSC information for other boats,
your unit must be connected to an external AIS or DSC device.
See page 30 for more information.
Safe Zone—turn a safe zone around your boat on or off. This is
used for collision avoidance, and can be customized:
• Ring—show or hide a ring on the map showing the safe zone
for your boat.
• Range—change the measured radius of the safe zone ring to a
specified distance from 0.1 to 2.0 nm (or .02 to 5.0 km, or 0.1
to 2.0 mi).
• Time to Safe Zone—sounds an alarm if AIS determines that
a target will intersect the Safe Zone within the defined time
interval (ranging from 3 to 24 minutes).
GPSMAP® 400 Series Owner’s Manual
Using Sonar
Using Sonar
Understanding the Flasher
When connected to a transducer, your unit becomes a powerful
fishfinder/flasher. If your unit does not have a built-in sounder, you
can connect a Garmin GSD 21 or GSD 22 sounder module to your
unit to use the sonar features.
Understanding the Full Screen
Select the Full Screen option to view a full-screen graph of the
transducer’s sonar readings.
The Flasher screen (dual beam transducer only) provides an almost
instantaneous return of what is below your boat. The depth scale is
organized as a ring that starts at the top, or 12:00, and progresses
clockwise. Sonar information flashes on the ring when it is received
at the depth indicated on the inside ring. Like the regular graph, the
colors indicate different strengths of the sonar return.
To open the flasher, from the Home screen, select Sonar > Flasher.
From the Home screen, select Sonar > Full Screen.
Flasher ring
frequency or
beam width
GPSMAP® 400 Series Owner’s Manual
Using Sonar
Understanding the Split Freq Screen
Use the Split Freq screen (dual frequency transducer only) to view
both the 50kHz and 200kHz frequencies on the same screen. A
50kHz frequency graph appears on the left; a 200kHz frequency
graph appears on the right.
Understanding The Split Zoom Screen
Use the Split Zoom screen to view the full sonar data from the graph
and a zoomed in portion on the same screen.
From the Home screen, select Sonar > Split Zoom.
Depth, temperature,
and speed
To open the Split Freq screen, from the Home screen, select Sonar >
Split Freq.
Depth, temperature, and speed
depth scale
Zoom level
Transducer frequency
or beam width
GPSMAP® 400 Series Owner’s Manual
Using Sonar
Understanding the Temp Log Screen
If you are using a temperature-capable transducer, the Temp Log
screen keeps a graphic log of temperature readings over time. The
current temperature and depth are shown in the top-left corner.
From the Home screen, select Sonar > Temp Log.
From the Home screen, select Sonar > Sonar Setup.
Fish Symbols—set how the sonar interprets suspended targets.
The unit does not interpret the sonar return data
The temperature appears along the right side and the time
elapsed appears along the bottom. The graph scrolls to the left as
information is received.
GPSMAP® 400 Series Owner’s Manual
Use the Sonar Setup screen to define and adjust settings universal to
all sonar screens.
Color Scheme—choose white or blue. This affects the background
on all sonar screens, but does not change the Temp Log screen.
Setting Up Sonar
Suspended targets appear as symbols. Background sonar
information appears, making the distinction between fish
and structure easier.
Suspended targets appear as symbols with background
information shown. The target depth of each symbol is also
Suspended targets appear as symbols. No background
information appears.
Suspended targets appear as symbols with no background
information shown. The target depth of each symbol is
Using Sonar
Scroll Speed—adjust the rate at which the sonar scrolls from
right to left (Ultrascroll, Fast, Medium, or Slow). If using a
speed-capable transducer, select Auto to have the scroll speed
automatically adjust to your boat’s water speed.
Surface Noise—show or hide the sonar returns near the surface of
the water. Hide surface noise to help reduce clutter.
Whiteline—highlights the strongest signal from the bottom to help
identify its hardness or softness.
• Off—(default) Whiteline is disabled.
• High—the most sensitive setting. Almost all strong returns
are highlighted in white.
• Medium—many strong returns are highlighted in white.
• Low—the least sensitive setting. Only the strongest returns
are highlighted in white.
Numbers—show or hide battery voltage, water temperature, water
speed (if your transducer is capable), cruising, and navigation.
Note: To show water temperature or water speed, change the
setting to Auto. If the connected transducer is capable, the data
is shown.
Advanced Sonar Settings
To adjust advanced sonar settings, press MENU while viewing a
sonar screen.
Range—the range of the depth scale on the right side of the screen
(Auto or Manual Range).
Gain—controls the sensitivity of the sonar receiver (Auto or
Manual Gain). To see more detail, increase the Gain. If the screen
is cluttered, decrease the Gain.
Beam—when using a dual beam transducer, select a Wide or
Narrow beam.
Frequency—when using a dual frequency transducer, select how
the frequencies appear on screen (200kHz, 50kHz, Dual, or Auto).
Zoom—zoom in to a section of the Full Screen. The zoom is off, or
set to No Zoom by default. Four options are available:
• 2x Zoom—twice the magnification.
• 4x Zoom—four times the magnification.
• Bottom Lock—locks the zoom window to the bottom.
• Split Zoom—opens the Split Zoom screen.
Depth Line—quickly reference a specific depth (On or Off).
A-Scope—(dual frequency only) a vertical flasher along the right
side of the screen (On or Off).
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
Installing The Unit
To successfully operate your unit, you must properly install the unit
and all of its related parts. Compare the contents of this package
with the packing list on the box. If any pieces are missing, contact
your Garmin dealer immediately. Before you begin the installation:
• Read and follow the instructions to install the unit.
• Gather the appropriate fasteners and tools.
• Verify that all cables can reach the unit mounting location and
the transducer.
• Wear safety goggles and a dust mask when drilling, cutting, or
If you experience difficulty installing the unit, contact Garmin
Product Support or contact a professional installer.
Step 1: Select a Location
Consider the following when you select an installation location:
• Provides optimal viewing as you operate your boat.
• Allows easy access to the unit’s keypad.
• Is strong enough to support the weight of the unit and protect
it from excessive vibration or shock.
• Allows room for the routing and connection of the power/data
and transducer cables. There should be at least a 3-inch (8 cm)
clearance behind the case.
DO NOT mount the unit in an area that is exposed to extreme
temperature or conditions.
NOTE: The temperature range for the unit is 5°F to 131°F
(-15°C to 55°C). Extended exposure to temperatures exceeding
this range (in storage or operating conditions) may cause failure
of the LCD screen. This type of failure and related consequences
are NOT covered by the manufacturer’s limited warranty.
Note: References to a transducer in this section apply only to
units with an ‘s’ suffix (i.e., 440s). These units use the transducer
as part of the sonar feature. If you do not have an ‘s’ unit, then
disregard instructions regarding installing a transducer.
To install and use your unit:
Select a location.
Mount the unit.
Install the transducer.
Install the wiring harness.
Test the installation.
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
Step 2: �Mount the Unit
You can mount your unit in one of two ways:
• Surface Mount—mount the unit onto a bracket (included)
that attaches to the console or overhead.
• Flush Mount—use the optional flush mount kit to mount
the unit into a flat panel. See the “Appendix” for more
Surface Mounting the Unit
The unit’s compact, waterproof case is suitable for mounting in
exposed locations or at the navigation station. The unit comes with a
tilt/swivel mounting bracket that can be used for console mounting.
Mounting the Bracket Assembly
Tools (not included)—drill, screwdriver (Phillips or standard), and
one of the following:
• Three #8 (4 mm) pan-head machine bolts with matching nuts
and washers and a 5/32" (5 mm) drill bit.
• Three #8 pan-head self-tapping screws and a 1/16" drill bit for
drilling starter holes.
Use a pan-head machine bolt or self-tapping screw to secure the
swivel base. If you use a screw with a countersunk head, you risk
damaging the mounting bracket.
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
To mount the bracket assembly:
1. Using the swivel base as a template, mark the location of the
three holes that secure the bracket to the mounting surface.
2. Drill the mounting holes.
• If you secure the base with machine bolts, drill three
5/32" (5 mm) holes at the locations you marked.
• If you secure the base with self-tapping screws, drill
starter holes at the locations you marked. Do not make
the starter holes deeper than half the screw length.
3. Secure the swivel base with three bolts or screws. DO NOT
4. Place the swivel mount bracket over the swivel base and
secure it with the short knob.
GPSMAP® 400 Series Owner’s Manual
To install the unit on the mounting bracket:
1. Align the slot on the back of the unit with the long mounting
knob, and slide the unit into place. If necessary, adjust the
long knob to spread the bracket arms apart. (Turn counterclockwise to widen the bracket arms and clockwise to
2. Adjust the unit angle, and tighten the long mounting knob
until snug.
3. Rotate the swivel mount bracket by twisting it left or right.
The bracket clicks as you turn it. Select a good viewing
angle, and then tighten all knobs.
4. Connect the power/data and transducer cables to the back of
the unit, making sure the locking rings are fully tightened on
both connectors.
Installing the Unit
Step 3: ���������
Install the Transducer
Proper transducer installation is key to getting the best performance
from your unit. If the transducer lead is too short, extension cables
are available from your Garmin dealer. Coil and secure any excess
CAUTION: DO NOT cut the transducer lead or any part of
the transducer cable. Cutting the transducer cable voids your
warranty. The cable cannot be spliced and connected to any
existing (Garmin or non-Garmin) transducer cables.
The following pages contain tips and basic installation instructions
for some popular transducers. Detailed installation instructions are
provided in the transducer kits. Some transducers might have to be
installed by a professional marine installer.
To �������������������������
assemble the transducer:
1. Insert the rubber washer and plastic spacer into the
transducer at the same time. DO NOT lubricate the rubber
2. Route the cable toward the back of the transducer. Slide the
transducer into the transducer mount.
3. Place a 5 mm flat washer on the 10-32 x 1.75" screw, and
insert the screw through the transducer mount, spacer, and
rubber washer.
4. Place the remaining 5 mm flat washer on the exposed end.
Install the 10-32 lock nut finger tight. You can tighten the
transducer further after installation on the boat.
Cable tie slot
Back of the transducer
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
To mount the dual beam transducer on a trolling
1. Slide the large cable tie through the slot on the transducer
mount with the ridges of the band facing up until equal
lengths extend on both sides of the mount.
note: For cold water and heavy timber or debris areas, a metal
4-5" worm gear clamp is recommended.
2. Position the mount gasket on the curved top of the
transducer mount.
3. Place the transducer assembly against the motor body of the
trolling motor, with the front of the transducer pointed away
from the trolling motor propeller.
4. Wrap the two ends of the cable tie around the motor body.
Place the pointed end of the cable tie through the fastener
hole on the opposite end and pull it through until it is snug but
not tight. (The cable tie clicks when you pull it.)
5. Position the transducer so that it is parallel with the bottom
when in use, and make sure the gasket is aligned properly.
Pull the cable tie end until tight. Trim off the excess if
necessary. Tighten the 10-32 locking nut until it touches the
mounting bracket, and then tighten 1/4 turn more. (Do not
GPSMAP® 400 Series Owner’s Manual
6. Route the 30-foot (9 m) transducer cable using the supplied
cable ties to secure the cable to the motor shaft. You can fill
the forward-facing portion (except the cable tie pocket) of the
transducer mount with sealant to avoid accumulating debris.
NOTE: Leave some slack in the cable to avoid damage while
using the trolling motor.
Cable tie
Front of the transducer
Installing the Unit
Mounting the Transducer on a Transom
USS Barnett
Apply marine sealant to all
screw threads to prevent water
from seeping into the transom.
Mount the transducer cable
cover well above the
Transducer should extend
1/8" below fiberglass hull or
3/8" below aluminum hull.
Mount the transducer parallel with the bottom.
Make sure that the transducer is below
water level when the boat is on plane
at high speed.
Do not mount the transducer directly in the
path of the prop. The transducer can cause
cavitation that may degrade the boat’s
performance and damage the prop.
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
When selecting a transom mount location, consider the following for
optimal performance:
• For your sonar to operate properly, the transducer must be
located in calm water. DO NOT mount the transducer behind
strakes, rivet lines, struts, fittings, water intake, discharge
ports, eroding paint, or anything that creates turbulence.
• Mount the transducer as close to the center of the boat as
• DO NOT cut the transducer lead. (This voids your warranty.)
• DO NOT mount the transducer in locations where it might be
jarred when launching, hauling, trailering, or storing.
• DO NOT mount the transducer in the path of the prop on
single-drive boats. The transducer can cause cavitation that
can degrade the boat’s performance and damage the prop. On
twin-drive boats, mount the transducer between the drives, if
NOTE: DO NOT mount the transducer behind strakes, struts,
fittings, water intake or discharge ports, or anything that creates
air bubbles or causes the water to become turbulent. The
transducer must be in clean (non-turbulent) water for optimal
GPSMAP® 400 Series Owner’s Manual
Tool List (not included)—drill, 3/8" wrench or socket, 5/32" and
1/8" drill bits, masking tape, #2 Phillips screwdriver, and marine
To mount the transducer on a transom:
1. Position the transducer mount at the selected transom
location. Make sure the transducer is parallel with the water
line. Mark the center locations of each hole on the transducer
2. Using a 5/32" bit, drill the pilot holes approximately 1" (25 mm) deep at the marked locations. To avoid drilling the
holes too deep, wrap a piece of tape around the bit at 1" from
the point of the bit.
3. Apply marine sealant to the 5 x 30 mm screws. Attach the
transducer assembly to the transom using the 5 x 30 mm
screws. Adjust the transducer assembly to extend beyond
the bottom of the transom approximately 1/8" (3 mm) on
fiberglass hulls or 3/8" (10 mm) on aluminum hulls. Adjust the
transducer assembly to be aligned parallel with the water.
4. Tighten the 10-32 locking nut until it touches the mounting
bracket, and then tighten 1/4 turn more. (Do not overtighten.)
5. Place the first cable clamp on the transducer cable
approximately one third of the distance between the
transducer and the top of the transom.
Installing the Unit
6. Mark the location. Using a 1/8" bit, drill a pilot hole
approximately 3/8" (10 mm) deep.
7. Attach the cable clamp using a 4 x 12 mm screw. Coat the
screw with marine sealant before installation. Repeat steps 5
and 6 using the other cable clamp.
8. Route the transducer cable, as needed, to the unit. DO NOT
CUT THE CABLE. Avoid routing the cable with electrical
wires or other sources of electrical interference.
Drill pilot holes here.
Bottom of
To avoid drilling a hole to mount a thru-hull transducer, a
transducer can be secured with epoxy inside a boat (shoot-thruhull installation). This type of installation can provide better
noise reduction and allow you to use a higher Gain setting. For
a transducer to be mounted inside the hull (shoot-thru, not thruhull), the boat must be fiberglass, with no core. Contact your boat
manufacturer if you are unsure. Professional installation might be
Some transducers are specifically designed to be mounted inside a
fiberglass hull. The standard plastic transom mount transducer can
also be mounted using this method. If using a temperature sensing
transducer, the temperature shown reflects the hull temperature.
Align with the transom
bottom. The transducer
should extend 1/8"
below fiberglass hulls
or 3/8" below aluminum
Shoot-Thru-Hull Installation
the transo
Note: A solid fiberglass hull can be no more than 5/8" (9.53
mm) thick when using a 500 W transducer, and no more than 1"
(25.4 mm) thick when using a 1 kW transducer.
Keep it parallel with the water line.
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
Selecting a Location for a Shoot-Thru-Hull Installation
When installing a transducer, the installation location must be the
• Solid fiberglass, without any air bubbles, laminates, fillers, or
dead air space.
• In an area of clean (non-turbulent) water at all speeds.
• The location must not be over any strakes or behind any
obstruction on the hull that would create turbulence.
NOTE: Many modern hulls have a dedicated pocket for
shoot-thru-hull transducer installation. If you are unsure if your
hull is equipped with a pre-located pocket, contact your hull
To test the location:
1. Fabricate a test device from a section of PVC pipe or a can,
as shown in the following illustration.
2. Temporarily seal the test device to the hull with caulking or
RTV sealer, and fill with water or light mineral oil.
3. Place the transducer in the water, pointed directly at
the bottom and weight it down. Set the unit for optimum
performance. If the sonar performance is significantly
degraded, another location must be tested.
GPSMAP® 400 Series Owner’s Manual
PVC pipe
or a can
Strip caulk or
RTV sealer
Weight the transducer
to hold it in place.
Fill a pipe or can with
water or a light mineral oil.
Hull surface
Testing the Location
To permanently install the transducer:
1. Lightly sand the surface of the hull and face of the transducer
with 400 grit wet or dry sandpaper.
2. Build a dam using strip caulk about 1/4" (6 mm) tall. Pour
about 1/8" (3 mm) of two-part, slow-cure epoxy into the dam.
3. Place the transducer in the epoxy, turning the transducer to
work out any air bubbles.
4. Weight the transducer in place, and allow it to cure for
24 hours.
Installing the Unit
Step 4: ���������
Install the Wiring Harness
The unit comes with a wiring harness that connects the unit to power
and the transducer with one easy-to-remove connection and provides
interface capabilities for connecting external devices.
The color code in the diagram (see page 49) indicates the
appropriate harness connections. The replacement fuse is a
AGC/ 3AG - 3 Amp fuse. If it is necessary to extend the power
wires, use 22 AWG wire. DO NOT cut the transducer cable, because
this voids your warranty. You can wire the unit directly to the
battery. If your boat has an electrical system, you might be able to
wire the unit directly to an unused holder on your current fuse block.
If you are using the boat’s fuse block, remove the in-line fuse holder
supplied with the unit.
To 10-35 Volt boat supply
Boat ground
Note: During a typical installation, use only the Red and Black
wires. The other wires do not have to be connected for normal
operation of the unit. For information on connecting to a NMEA
or CANet compatible device, see page 50.
1. Use a test light or voltmeter to determine the polarity of the
voltage source.
2. Connect the Red (+ or positive) wire to the positive voltage
terminal. (If you use the boat’s fuse block, route the positive
connection through the fuse, as shown on the diagram.)
3. Connect the Black (- or ground) wire to the negative voltage
4. Install or check the 3-Amp fuse (on the boat’s fuse block or in
the in-line holder).
5. Align the notches on the cable plug and on the back of the
unit. Insert the cable into the connector, and turn the lock ring
counter-clockwise until it stops.
Caution: The maximum unit input voltage is 35-Volts DC.
Do not exceed this voltage, because this can damage the unit and
void the warranty.
To install the wiring harness:
To Unit
Fuse block
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
To Transducer
PIN 8 - Black (Ground)
PIN 7 - Yellow (Alarm)
PIN 13 - Red (DC Positive)
PIN 12 - White (CANet H)
PIN 16 - Green (CANet L)
PIN 18 - Blue (NMEA Out)
GPSMAP 400 Series Pin Assignment
(BLACK) Ground
(ORANGE) Accessory On
DC Power
NMEA Device
(YELLOW) Alarm Low
NMEA Device
Alarm Relay
100ma max
coil current
GPSMAP 400 Series Wiring Harness
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
Connecting to a NMEA device
You can connect the unit to other NMEA compatible equipment,
such as a DSC or AIS device. Refer to the wiring diagrams on
page 50 for connecting the unit to NMEA compatible devices.
To install the wiring harness to a GPS or other NMEA
1. Follow the voltage source installation steps (see page 49).
For Garmin units, the ground (Black) wires serve as NMEA
ground and must be attached together or on the same
terminal. Refer to the wiring diagram of your GPS unit for
wire identification.
2. Connect the Blue (NMEA Out 1) wire from the unit to the
NMEA In wire on the NMEA unit’s wiring harness, and the
brown (NMEA In 1) wire to the NMEA Out wire on the NMEA
unit’s wiring harness.
3. Repeat step 2 using the Grey and Violet wires for an
additional NMEA unit.
4. Set the unit’s serial port(s) to use NMEA In/NMEA Out
(page 30).
Interfacing with NMEA
The unit allows for NMEA 0183, Version 3.01 output with a
compatible GPS or navigation device. You must set the unit’s serial
port(s) to NMEA In/NMEA Out to send data and receive data
(page 30).
sent and received in NMEA 0183, Version 3.01.
You can purchase complete information about National Marine
Electronics Association (NMEA) format and sentences from:
Seven Riggs Avenue
Severna Park, MD 21146 USA
Installing the Unit to a Garmin CANet
The unit is a CANet-compatible Garmin device, and can send or
receive sonar information from another CANet-compatable Garmin
device. Using the CANet optimizes the performance of CANetcompatible units, allowing sonar information from a Sounder or
Fishfinder to be shared with up to two CANet compatible Garmin
GPS units. A standard NMEA connection only allows depth,
temperature, and speed information to be sent to a single GPS device,
whereas a CANet connection provides full sonar readings, including
Ultrascroll™, so you can view and control the same information on
your compatible Garmin GPS unit(s) as you can on your compatible
Garmin Sounder or Fishfinder.
Note: To use the Garmin CANet with your unit, you must
obtain a CANet Kit. Contact your Garmin dealer, or visit
GPSMAP® 400 Series Owner’s Manual
Installing the Unit
Step 5: Test the Installation
To turn on your unit for the first time, press and hold the
POWER key until the unit beeps and turns on. Use the ROCKER
and the SELECT keys and follow the screens to configure your unit.
Note: Although you can perform some checks with the boat
trailered, the boat should be in the water to properly test the
To ���������������������
configure your unit �������������������
for the first time:
Select the Language.
Select attached NMEA Devices.
Select the Transducer type (if applicable).
Select the Position Format (the default is hddd°mm.mmm').
Select the Time Format (the default is 12 Hour).
Select your Time Zone.
Select your preferred Units of measure.
Select Minimum Depth.
Select the Overhead Clearance of your boat.
The Home screen appears (see page 6) after you select your
configuration options.
Note: You can adjust these options in the future from the
Configure screen.
Because water is necessary to carry the sounder’s sonar signal, the
transducer must be in the water to work properly. You cannot get a
depth or distance reading when out of the water.
When you place your boat in the water, check for leaks around
any screw holes that were added below the water line. DO NOT
leave your boat in the water for an extended period of time without
checking for leaks.
GPSMAP® 400 Series Owner’s Manual51
Installing the Unit
To test the transom mount transducer installation:
1. Begin testing the installation at a slow speed. If the sonar
appears to be working properly, gradually increase the
boat’s speed while observing the sonar’s operation. If the
sonar signal suddenly is lost or the bottom return is severely
degraded, note the speed at which this occurs.
2. Return the boat to the speed at which the signal was lost.
Make moderate turns in both directions, and see if the signal
3. If the signal strength improves while turning, adjust the
transducer so that it extends another 1/8" below the transom
of the boat. It might take several adjustments to eliminate the
4. If the signal does not improve, you might have to move the
transducer to a different location.
NOTE: When adjusting the depth of the transducer, make the
adjustments in small increments. Placing the transducer too
deep can adversely affect the boat’s performance and put the
transducer at greater risk of striking underwater objects.
GPSMAP® 400 Series Owner’s Manual
Physical Specifications
Size: 5" H x 5.7" W x 3" D (12.7 cm x 14.5 cm x 7.62 cm)
Weight: 1.30 lbs (560.0 g)
Display: 4.0" diagonal (10.16 cm), QVGA display with adjustable brightness, 320 x 240 pixels.
Fully gasketed, high-impact plastic alloy, waterproof to
IEC 529 IPX7 standards.
GPS Accuracy:
Position: <49 feet (15 meters), 95% typical*
Velocity: 0.05 meters/sec steady state
WAAS Accuracy:
Position: <10 feet (3 meters), 95% typical*
Velocity: 0.05 meters/sec steady rate
Dynamics: 6gs
* Subject to accuracy degradation to 100 m 2DRMS under the U.S. DOD-imposed Selective
Availability Program.
Power Source: 10-35 VDC
Temp. Range: 5ºF to 131ºF (-15ºC to 55º C)
Usage: 15 Watts max at 13.8 VDC
Compass Safe Distance: 95 cm
Fuse: AGC/3AG - 3.0 Amp
Receiver: Differential-ready 12-parallel channel WAAS-capable receiver
Acquisition Times:
Warm: Approx. 15 seconds
Cold: Approx 45 seconds
AutoLocate: Approx 2 minutes
Power: Dual Frequency, 500 Watts (RMS), 4,000 Watts (peak to peak);
Dual Beam, 400 Watts (RMS), 3,200 Watts (peak to peak)
Frequency: 50/200 kHz (dual frequency), 80/200 kHz (dual beam)
Depth: 1,500 ft (dual frequency), 900 ft (dual beam)*
*Depth capacity is dependent on water salinity, bottom type, and other water conditions.
Update Rate: 1/second, continuous
GPSMAP® 400 Series Owner’s Manual53
Product Registration
Caring for the Unit
Use this area to record the serial number (9-digit number located on
the back of the product) in case your product needs service. Keep
the original sales receipt, or a photocopy, in a safe place.
Cleaning the Case
Help us better support you by completing our online registration
today! Connect to our Web site at http://mygarmin.com.
The case is constructed of high-quality materials and does not
require user maintenance, except cleaning.
Serial Number: ___ ___ ___ ___ ___ ___ ___ ___ ___
Clean the unit’s outer casing (except for the screen) using a cloth
dampened with a mild detergent solution and then wipe dry. Avoid
chemical cleaners and solvents that may damage plastic components.
Contact Garmin
Cleaning the Screen
Contact Garmin if you have any questions while using your unit. 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/, and click Product Support.
In Europe, contact Garmin (Europe) Ltd. at +44 (0) 870.8501241
(outside the UK) or 0808 2380000 (within the UK).
The unit’s lens is coated with a special anti-reflective coating that
is sensitive to skin oils, waxes and abrasive cleaners. Cleaners
containing ammonia, alcohol, abrasives, or anti-grease detergents
will harm the anti-reflective coating. It is important to clean the lens
using an eyeglass lens cleaner (that is specified as safe for antireflective coatings) and a clean, lint-free cloth.
Water Immersion
The unit 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.
GPSMAP® 400 Series Owner’s Manual
Alarms and Messages
The unit uses an on-screen message system to alert you to unit
operating characteristics. When a message appears, press MENU to
acknowledge the message.
Accuracy Alarm—the GPS accuracy has fallen outside of user-set
AIS: Dangerous Target—shows the MMSI (Maritime Mobile
Service Identity) of the dangerous target.
Alarm Clock—the alarm clock has sounded.
Anchor Drag Alarm—you have drifted out of the specified distance
Antenna Input is Shorted—some part of the antenna wiring is
contacting the chassis.
Arriving At [Waypoint Name]—you arrived at the destination
Battery Alarm—battery voltage has fallen below the value entered
in the Battery Alarm setup.
Battery Voltage Is Too High—too much input voltage; the unit
shuts off in 10 seconds. Decrease the input voltage to 35-Volts or
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 Read User Card—error reading card; remove and reinsert.
Contact your dealer or Garmin Product Support if the problem
Can’t Read Voltages That High, Limited To Top Of Range—the
voltage value in the Battery Alarm setup is higher than the unit can
Can’t Read Voltages That Low, Limited To Bottom Of
Range—voltage value in the Battery Alarm setup is lower than the
voltage where the unit automatically turns off.
Can’t Unlock Maps—data on data card is not unlocked for the unit.
Contact your dealer or Garmin Product Support.
Can’t Write User Card, Card May Be Full—error reading card;
remove and reinsert. Contact your dealer or Garmin Product Support
if the problem persists.
Can’t Write User Card, Card Is Read-Only—the SD card in your
unit contains data copy protection.
Check XM Antenna*—internal problem with your GXM 31
antenna. Contact Garmin Product Support.
GPSMAP® 400 Series Owner’s Manual55
DSC Position Report Received From—shows the MMSI or name
associated with an MMSI.
Flash Flood Warning*—a flash flood warning was issued for the
area by the National Weather Service.
Database Error—internal problem with the unit. Contact your
dealer or Garmin Product Support to have the unit serviced.
Flood Warning*—a flood warning was issued for the area by the
National Weather Service.
Deep Water Alarm—the Deep Water Alarm depth has been
Invalid MMSI—enter a Valid MMSI.
Directory Item With This MMSI Already Exists—the MMSI
number is already in DSC directory. Use a different number.
Directory Memory is Full, Can’t Create Entry—the DSC
directory has reached maximum of 100 contacts. Delete unneeded
contacts to add new ones.
Distress Call—a DSC distress call has been received. Take
appropriate action.
Entering (Leaving) target water temperature—the target water
temperature is 2° F (1.1° C) above or below the temperature
specified by the Water Temperature Alarm. These messages appear
when you enter or leave that zone.
Lost Satellite Reception—the unit has lost satellite signals. Check
antenna connections or try moving to a location with a clear view of
the sky.
Marine Warning*—a marine warning was issued by the National
Weather Service.
NMEA Depth Is Below Transducer—you must enter an
appropriate Keel Offset for the transducer.
No Waypoints/Routes/Tracks/User Waypoints Found—attempted
to transfer user data from an SD card that does not contain the
specified type of data. Make sure there is data to transfer on the SD
Fish Alarm—a beep sounds (if enabled) when a fish is detected.
This alarm does not show a message banner.
GPSMAP® 400 Series Owner’s Manual
No XM Signal*—the GXM 31 antenna is not receiving an XM
Sonar Timeout—there is an internal problem with the unit. Contact
your dealer or Garmin Product Support to have the unit serviced.
Off Course Alarm—you are off course the distance set in the “Off
Course” alarm.
Sonar Service Lost—the external sonar device you were connected
to has either been disconnected or the unithas lost communication
with the sonar device for some other reason.
Route Already Exists—you entered a route name that already exists
in memory. Modify the route name or delete the previous route
Route Full—you attempted to add more than 250 points to a route.
Reduce the number of points or create a second route.
Route Truncated—uploaded route from another device has more
than 250 waypoints and was truncated to fit.
Route Waypoint Memory Full—no additional route waypoints can
be saved.
Severe Storm Warning*—a severe storm warning has been issued
for the area by the National Weather Service.
Shallow Water Alarm—the Shallow Water Alarm depth has been
Sonar Service Incompatible—the external sonar device you are
connected to needs a software update.
Tornado Warning*—a tornado warning was issued for the area by
the National Weather Service.
Track Already Exists [Track Name]—you entered a saved track
name that already exists in memory. Modify the track name or delete
the existing track.
Track Log Full—the track log is full and track recording has been
turned off. To record more track points, you need to clear the track
log and turn track recording on. This only appears when the track
recording setting is set to “Stop When Full.”
Track Memory is Full, Can’t Create Track—the track log
memory is full. No additional track log data can be stored without
deleting old data to create memory space.
Track Truncated—a complete uploaded track does not fit into
memory. The oldest track log points were deleted to make space for
the most recent data.
GPSMAP® 400 Series Owner’s Manual57
Transducer Disconnected, Sonar Turned Off—there is not a
transducer attached, bad cable/transducer, or the transducer cable
was disconnected. If the transducer cable is removed while the unit
is on, reconnect and cycle power.
Transfer Complete—the unit has finished uploading or
downloading information to the connected device.
User Card Not Found, Please Insert Card—attempted to transfer
user data without an SD card containing user data being present in
the SD card slot.
Water Speed Sensor Is Not Working—the speed sensor is not
detected. Check the connections.
Water Temperature Alarm—sonar has reported a temperature
above, below, inside, or outside the specified value(s).
Waypoint Already Exists—you entered a waypoint name that
already exists in memory. Modify the waypoint name or delete the
existing waypoint.
Waypoint Memory Full—you have used all 1,500 waypoints
available. Delete unwanted waypoints to make space for new entries.
Weather Service Lost*—the external weather you were connected
to has either been disconnected or the unit has lost communication
with the device for some other reason.
XM Service Incompatible*—the external XM antenna you are
connected to needs a software update.
* This message appears only if you have a GXM 31 antenna connected and a
subscription to XM WX Weather.
GPSMAP® 400 Series Owner’s Manual
Weather Data Warranty
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.
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).
GPSMAP® 400 Series Owner’s Manual59
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
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 and exclusive remedy is to stop using the DAFIF product.
XM Satellite Radio Service Agreement
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.
Software License Agreement
Garmin grants you a limited license to use the software embedded in this
device (the “Software”) in binary executable form in the normal operation of
the product. Title, ownership rights, and intellectual property rights in and to
the Software remain in Garmin.
You acknowledge that the Software is the property of Garmin and is protected
under the United States of America copyright laws and international copyright
treaties. You further acknowledge that the structure, organization, and code
of the Software are valuable trade secrets of Garmin and that the Software in
source code form remains a valuable trade secret of Garmin. You agree not
to decompile, disassemble, modify, reverse assemble, reverse engineer, or
reduce to human readable form the Software or any part thereof or create any
derivative works based on the Software. You agree not to export or re-export
the Software to any country in violation of the export control laws of the
United States of America.
GPSMAP® 400 Series Owner’s Manual
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.
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
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.
Garmin International, Inc.
Garmin (Europe) Ltd.
1200 East 151st Street, Liberty House,
Olathe, Kansas 66062, USA Hounsdown Business Park,
Tel. (913) 397-8200 or
Southampton, Hampshire, SO40 9RB UK
(800) 800-1020
Tel. +44 (0) 870.8501241 (outside the UK)
Fax (913) 397-8282
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
GPSMAP® 400 Series Owner’s Manual61
FCC Compliance
This product has been tested and found to comply with Part 15 of the FCC
interference limits for Class B digital devices FOR HOME OR OFFICE
USE. These limits are designed to provide more reasonable protection against
harmful interference in a residential installation, and are more stringent than
“outdoor” requirements.
Operation of this device is subject to the following conditions: (1) this
device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired
This equipment generates, uses, and can radiate radio frequency energy and
may cause harmful interference to radio communications if not installed and
used in accordance with the instructions. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet 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
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.
Declaration of Conformity (DoC)
Hereby, Garmin, declares that this unit is in compliance with the essential
requirements and other relevant provisions of Directive 1999/5/EC.
To view the full Declaration of Conformity, see the Garmin Web site for your
Garmin product: www.garmin.com/products/. Click Manuals, and then select
the Declaration of Conformity link.
Optional Accessories
For more information about optional accessories, go to the Garmin Web site
at www.garmin.com/products. You can also contact your Garmin dealer to
purchase accessories. Optional accessories include:
Flush Mount Kit
CANet Connection Kit
Preprogrammed BlueChart g2 Vision SD cards
GPSMAP® 400 Series Owner’s Manual
A-Scope 38
accessories 62
aerial photos 15
AIS 28, 34
alarms 55–58
battery 31
deep water 32
fish 32
navigation 31
setting 31–32
shallow water 32
sonar 32
system 31
water temp 32
arches 37
automatic guidance 16
adjusting 2
beam 38
BlueChart g2 Vision
using 11–15
bottom lock 38
bracket assembly 40
CANet 50
celestial information 27
Chart/Sonar screen
using 18
chart borders 17
fish eye 3D 13
fishing 13
mariner’s eye 3D 12
navigation 7
settings 16
communications settings 30
current stations 26
chart settings 16
fish symbols 37
flush mount 40
frequency 38
fuse 48, 53
gain 38
go to 19
GPS, wiring to a 50
guide to 19
heading 29
HOME key 3
fish eye 3D 13
settings 13
fishing chart 13
event log 29
Declaration of Conformity 62
depth 29
depth line 38
DSC 28, 34
changing 29
LCD screen 39
light sectors 17
limited warranty 61
MENU key 3
messages 55
bracket assembly 40
transducer on a transom 45
my boat 32
input voltage 48
installing 39–48
selecting a location 39
testing 51
the mount 40
the transducer 42
the wiring harness 48
to a Garmin CANet 50
interfacing with NMEA 50
keel offset
adjusting 32
navigating 19
go to 19
guide to 19
route to 19
NMEA device
connecting to 50
NMEA output sentences
enabling 30
numbers 38
customizing 25
viewing 25
GPSMAP® 400 Series Owner’s Manual63
object information
accessing 10
obstruction 9
optional accessories 62
orientation 16
other boats
configuring 34
viewing 28
physical specifications 53
position 29
power/data and transducer
cables 39, 41
quick links i
Range (sonar) 38
RANGE keys 3
ROCKER key 3
creating 23
deleting 24
viewing 27
route to 19
safe depth 32
safe zone 34
satellite imagery 11
enabling 14
scroll speed 38
SD cards
inserting 5
removing 5
SD card slot 1
SELECT key 3
chart 16
system 29
shoot-thru-hull installation 46
simulator mode
using 4
software license agreement 60
advanced settings 38
setting up 37–38
specifications 53
specifications 53
speed sensor 33
spot depths 17
surface mounting the unit 40
surface noise 38
suspended targets 37
swivel base 41
swivel mount bracket 41
symbols 9
system information
viewing 5
temperature 29
test the installation 51
tide stations 26
viewing information 11
time 29
transducer 46
cables 39
dual beam 33, 35
dual frequency 33, 36, 38
installing 42–45
transom 45
transom, mounting on a 44
transom mount installation 52
Ultrascroll 50
units of measure
changing 29
user data
clearing 27
transferring 27
viewing 27
celestial information 27
currents 26
other boats 28
tide stations 26
user data 27
voltage 48
water speed
calibrate 33
water temperature 56
creating 21
editing 22
viewing 27
weather data warranty 59
Where To? 6, 19
whiteline 38
wiring harness
installing 48–50
XM Satellite Radio service
agreement 60
zoom 38
2x 38
4x 38
split 38
GPSMAP® 400 Series Owner’s Manual
For the latest free software updates (excluding map data) throughout the life of your
Garmin products, visit the Garmin Web site at www.garmin.com.
© 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
Part Number 190-00754-00 Rev. B
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