Garmin GMR 21 Radar Detector Owner`s manual
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Garmin GMR 21 is a marine radar that enhances your Garmin Marine Network by adding graphical radar data to your Garmin chartplotter. With the GMR 21, you can detect targets up to 24 nautical miles away, view digital navigation data, and adjust various radar settings to optimize performance in different conditions. Use the radar overlay feature to combine radar data with your chartplotter's map, or display radar information on a dedicated Radar Page.
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GMR 21/41
marine radar
Owner’s Manual
© Copyright 2006 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151 st Street,
Olathe, Kansas 66062, U.S.A.
Tel. 913/397.8200 or 800/800.1020
Fax 913/397.8282
Garmin (Europe) Ltd.
Unit 5, The Quadrangle
Abbey Park Industrial Estate
Romsey, SO51 9DL, U.K.
Tel. 44/0870.8501241
Fax 44/0870.8501251
Garmin Corporation
No. 68, Jangshu 2 nd 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 registered trademarks of Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin.
March 2006 Part Number 190-00665-00 Rev. A Printed in Taiwan
I
NTRODUCTION
About This Manual
Thank you for choosing Garmin’s GMR 21/41 marine radar. The addition of the GMR 21/41 marine radar to your Garmin Marine
Network, enhances the capability of your system by adding graphical radar data to your Garmin chartplotter.
This manual covers the features and operation of the GMR 21/41 marine radar when viewed on the Garmin chartplotters. To get the most out of your new radar, take time to read this manual and learn the operating procedures for your unit in detail.
The Introduction contains information about this manual and the
Table of Contents.
The Main Pages contain information on the setup and operation of the
GMR 21/41.
The Appendix contains information such as specifications and license requirements. You can also find warranty and FCC information in the
Appendix.
Use the Index as a key word search to help you find information more quickly.
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Terminology Used Throughout This Manual
• This manual refers to the radome hardware as the “scanner,”
“radar,” or “GMR 21/41.” These terms can be used interchangeably.
• This manual uses the term “chartplotter” when referring to a
Garmin GPSMAP 3000 series multi-function display.
• This manual uses the term “Radar Page.” The Radar Page is a dedicated page on the Garmin chartplotter showing radar information. Radar information can be displayed as a split screen on any of the chartplotter main pages.
• This manual uses the term “highlight” when referring to the on-screen cursor. To highlight something, use the Rocker key on the chartplotter to move the cursor to the desired item. The on-screen cursor is represented by a highlighted yellow box.
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Introduction ...........................................................................i
About This Manual ................................................................... i
Terminology used Throughout this Manual ........................... i
GMR 21/41 Operation ..........................................................1
Radar Overview ....................................................................... 1
The Radar Page ....................................................................... 1
Radar Page Layout ..........................................................................3
Range Rings ..............................................................................4
Heading Line .............................................................................4
Digital Navigation Data ............................................................4
The Radar Configuration Page ............................................... 5
The Radar Adjustment Menu .................................................. 5
Sea Clutter ......................................................................................6
Rain Clutter .....................................................................................7
FTC (Fast Time Constant) ..............................................................7
Target Expansion ............................................................................8
Guard Zone .....................................................................................9
VRM/EBL .....................................................................................10
MARPA ......................................................................................... 11
MARPA Setup .............................................................................12
Hide/Show Navigation Features ...................................................13
Additional Adjustment Menu Items .............................................13
Map Cursor On/Off .......................................................................14
ii
The General Tab ......................................................................14
The Display Tab ......................................................................15
The MARPA Tab .....................................................................16
The Advanced Tab ..................................................................16
Enter Standby/Begin Transmitting ...............................................17
Map Page Radar Overlay ...................................................... 17
Appendix ............................................................................19
European License Requirements ........................................ 19
Specifications ........................................................................ 20
FCC Compliance .................................................................... 21
Declaration of Conformity .................................................... 21
Software License Agreement ............................................... 22
Limited Warranty ................................................................... 22
Warning and Cautions .......................................................... 24
GMR 21/41 Owner’s Manual
GMR 21/41 O
PERATION
Radar Overview
The Garmin GMR 21/41 transmits a narrow beam of microwave energy in a rotating 360° pattern. When the transmitted energy contacts a target, some of that energy is reflected and returned to the scanner. The scanner collects the returned energy for processing and display. The GMR 21/41 is operated and adjusted using controls on the Gamin chartplotter. Radar data is presented on a dedicated
Radar Page or as an overlay on the Map page. All radar controls are accessible on both pages.
The Radar Page
With the GMR 21/41 radar properly installed, at power up, the
Garmin chartplotter should detect the GMR 21/41 as a new network connection.
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When the new radar is detected, the chartplotter automatically adds a dedicated Radar Page to the pages list. If the Radar Page is not available, press and hold ADJ/MENU until the Main Menu is displayed. Use the Rocker to highlight the System tab, and select
Radar from the Services list at the bottom of the page.
To Select the Radar Page for display:
1. Press PAGE to display the Pages list.
2. Using the Rocker, select Radar.
3. Press ENTER.
NOTE: A software update may be needed for the GMR 21/41 to function properly. If the message “Incompatible Software
Version” is displayed when the chartplotter is powered on, the software in the chartplotter needs to be updated. A software update card is provided with the GMR 21/41.
GMR 21/41 Owner’s Manual
Pages List
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When the scanner is powered on, the Status Bar at the top of the
Radar Page, shows the message “Radar Warming Up” with a countdown to Standby Mode. The countdown is also displayed in the middle of the Radar Page. When the countdown reaches zero, the message changes to “Hold FCTN to transmit.”
As a safety feature, the scanner enters standby mode after it warms up. This provides the operator an opportunity to verify that the area around the scanner is clear before beginning radar transmission. It is important to remember that the microwave energy transmitted by the scanner can potentially be dangerous.
CAUTION: The GMR 21/41 radar transmits microwave energy that has the potential to be harmful to humans and animals. Before beginning radar transmission, verify that the area around the scanner is clear. The GMR 21/41 transmits a beam approximately
12° above and below a line extending horizontally from the center of the scanner. Avoid looking directly at the scanner, the eyes are the most susceptible part of the body.
When the area surrounding the scanner is clear, press and hold
FCTN. The message “Do you want to begin radar transmission?” is displayed. Select Yes, then press ENTER. Before transmission begins, the message “Spinning Up” is shown while the radar antenna reaches nominal rotation speed. When the message disappears, the radar begins painting an image.
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Radar Page Layout
This section describes the features of the Radar Page and how its features are displayed. By default, the Radar Page displays a Status Bar along the top, user configurable Digital Navigation Data down the right side, a Heading Line, and Range Rings. Soft key options that allow quick access to radar functions and setting changes are displayed along the bottom of the page.
Status bar
Range rings
Digital navigation data
Heading line
Zoom scale
Ring separation
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Soft key options
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Range Rings
The Range Rings help to quickly determine the distance to a target. In the lower-right corner of the display are two scales. The upper scale is the current zoom scale. This scale is changed using the RANGE keys. The zoom scale is represented by the Range Ring with tick marks around the circumference. The tick marks are arranged with major tick marks at thirty-degree increments and minor tick marks every five degrees. The tick marks can help in quickly determining the azimuth to a target. The lower scale represents the distance between the Range Rings.
Heading Line
The Heading Line is shown from your current position along the path of your current heading.
Digital Navigation Data
By default, the Radar Page shows one column of digital navigation data with four data fields. The Radar Page can be configured to show two columns of data with up to seven data fields each. Each data field can be configured to show a variety of data.
3/4 nm
1/2 nm
1/4 nm
4 GMR 21/41 Owner’s Manual
To display the Radar Configuration Page:
Press and hold DATA\CONFIG.
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The Radar Configuration Page
The Radar Configuration Page is used to change the look of the Radar
Page. Please refer to the GPSMAP 3000 series owner’s manual for information about “Configuring the Main Pages.”
The Radar Adjustment Menu
The Radar Adjustment Menu is a numbered list of options that allows direct access to the settings and features most commonly used on the
Radar Page. There are several adjustment options available: Gain, Sea
Clutter, Rain Clutter, FTC, Zoom, Target Expansion, Trails, Guard
Zone, VRM/EBL, MARPA, and Hide/Show Navigation Features. All adjustments are made using the Rocker, or Data Entry keys.
Radar Configuration Page
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Radar Adjustment Menu
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To change a Radar Adjustment Menu setting:
1. Press ADJ/MENU to display the Adjustment Menu.
2. Use the Rocker or Data Entry keys to select an option. Press
ENTER to display the adjustment for that selection.
3. Use the Rocker to change the current setting. Press ENTER to accept the change.
Gain
Selecting Gain displays the Gain adjustment slider. When Auto is selected, the scanner’s gain is automatically adjusted to provide optimal performance. Manually adjusting the gain increases or decreases the receiver’s sensitivity. Increasing the gain may help to show a distant target, but may also increase screen clutter.
To change the Gain setting:
1, Use the Rocker to move the slider up or down.
2. Press ENTER to accept the change.
To return the Gain setting to Auto, move the slider to the Auto position, or press the Auto soft key.
Sea Clutter
Adjusting the Sea Clutter setting can help eliminate any unwanted screen clutter caused by choppy sea conditions. Selecting Sea Clutter displays the Sea Clutter adjustment slider. The slider has three preset positions: Calm, Moderate, and Rough.
6 GMR 21/41 Owner’s Manual
To change the Sea Clutter setting:
1. Use the Rocker to move the slider to a preset or other position.
2. Press ENTER to accept the change.
The preset positions can also be selected using the soft key options.
Rain Clutter
Adjusting the Rain Clutter setting can help remove screen clutter caused by rain at close ranges. Selecting Rain Clutter displays the
Rain Clutter adjustment slider.
To change the Rain Clutter setting:
1. Use the Rocker to move the slider to the desired setting.
2. Press ENTER to accept the change.
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FTC (Fast Time Constant)
Adjusting the Fast Time Constant can help eliminate distant screen clutter caused by rain. The Fast Time Constant has four presets: Off,
Low, Medium, and High.
To change the FTC setting:
1. Use the Rocker to select a new setting.
2. Press ENTER to accept the change.
The FTC settings can also be selected using the soft key options.
FTC Menu
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Zoom
When a Zoom level is selected, a window showing a zoomed portion of the screen appears and a selection box is shown. The selection box can be moved to see different areas. The Zoom setting has four presets: Off, 2x, 4x, and Move.
To change the Zoom setting:
1. Use the Rocker to select a new setting.
2. Press ENTER to accept the change.
The Zoom settings can also be selected using the soft key options
To move the selection box:
1. Use the Rocker to move the pointer and highlight the edge of the selection box.
2. Press ENTER to activate the Move function.
3. Use the Rocker to move the selection box to a new location.
4. Press ENTER to accept the move
Target Expansion
Target Expansion increases the size of a target. Target Expansion has two settings, On and Off. The Target Expansion setting has no effect at range settings of 4 nm or greater.
To turn Target Expansion On or Off:
1. Use the Rocker to highlight On or Off.
2. Press ENTER to accept the change.
Target Expansion Off Target Expansion On zoom view selection box
8 GMR 21/41 Owner’s Manual
Trails
When the Trails function is on, all returns on the display leave a history trail. The Trails setting determines the length of the history trail. The Trails setting has four presets: Off, Short, Medium, and
Long.
To change the Trails setting:
1. Use the Rocker to select a new setting.
2. Press ENTER to accept the change.
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Guard Zone
A Guard Zone is a user-defined area of protection. If a target enters the defined Guard Zone, an alarm is sounded. Two Guard Zones can be defined at any given time.
The Guard Zone Menu has two areas, “Guard Zone 1” and “Guard
Zone 2.” Each area has two settings, Show/Hide and Adjust.
Guard Zone
Trails Off Trails On (medium)
To clear the Trails, select Clear Trails on the Adjustment Menu, or press the Clear Trails soft key.
GMR 21/41 Owner’s Manual continued
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To Define a Guard Zone:
1. Use th e Rocker to highlight Show Guard Zone 1 or 2, and press ENTER.
2. Use the Rocker to highlight Adjust and press ENTER.
3. Using the Rocker, define the area on the Radar Page.
4. Press ENTER to accept the change.
With a Guard Zone selected on the Radar Page, soft key options may be available.
VRM/EBL
The VRM (Variable Range Marker) and EBL (Electronic Bearing
Line) tools measure range and bearing to a target. The center point of the VRM can be moved, allowing measurement from one target to another. Two V/E tools can be active at the same time.
The VRM/EBL Menu has two areas, “VRM/EBL 1” and “VRM/EBL
2.” Each area has two settings, Show/Hide and Adjust.
To activate VRM/EBL 1 or 2:
Use the Rocker to highlight Show VRM/EBL 1 or 2 and press
ENTER.
The diameter of the VRM and the angle of the EBL are adjustable.
To adjust the VRM/EBL:
1. Use the Rocker to highlight Adjust and press ENTER.
2. Press the Rocker right or left to rotate the Electronic Bearing
Line around the center point of the VRM.
3. Press the Rocker up or down to increase or decrease the size of the Variable Range Marker.
4. Press ENTER to accept the changes.
Variable Range Marker
(VRM)
Electronic Bearing Line
(EBL)
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To move the center location of the VRM:
1. Use the Rocker to highlight Move and press ENTER.
2. Using the Rocker, move the center point of the VRM to the selected location.
3. Press ENTER to set the new location.
To use the VRM/EBL, expand the diameter of the VRM so that the outer edge touches the target. Rotate the EBL until it intersects the
VRM at the target location. The measured range and bearing are displayed in the lower left corner of the screen.
MARPA
The Mini Automatic Radar Plotting Aid (MARPA) function helps with collision avoidance. MARPA can track up to ten designated targets. Detailed information including Bearing, Range, Course,
Speed, Closest Point of Approach, and Time to Closest Point of
Approach for each target is displayed in the MARPA list.
NOTE: The MARPA function requires the use of a heading sensor. The heading sensor must output the NMEA sentence HDM or HDG at format 0183, v2.30 or higher. The Gamin Marine
Network has been tested using the KVH ® 1000 heading sensor using 6 second dampening.
MARPA relies on a Heading Sensor to provide accurate own vessel heading information. Accurate heading data enhances MARPA’s
GMR 21/41 Owner’s Manual
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ENU performance. Each target being tracked by MARPA is represented by a symbol. The symbols indicate the current state of the target.
Acquiring target
Target is safe
Target is dangerous
Lost target
For each target, a number and Vector Line is displayed with the symbol. The number is the MARPA list ID number. The Vector Line is a visual reference of the target’s course and speed.
To designate a MARPA target:
1. Use the Rocker to highlight Acquire Target and press
ENTER.
2. On the Radar Page, using Rocker, move the pointer to the target, and press ENTER.
continued
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While a target is being designated, a box is placed around the target.
When MARPA begins tracking the target, the box is replaced with the appropriate symbol.
To display the MARPA List:
Use the Rocker to highlight MARPA List and press ENTER.
12
Acquiring Target Tracking Target
MARPA List
MARPA Setup
The MARPA Setup Menu contains settings for Vector Length, Target
History, Own Vessel Safe Zone, Tine To Safe Zone, Safe Ring Zone, and Velocity Reference.
To display the MARPA Setup Menu:
Use the Rocker to highlight MARPA Setup, and press
ENTER.
MARPA Setup Menu
To change a MARPA field option:
1. Use the Rocker to highlight the desired field and press
ENTER to activate the field selections.
2. Use the Rocker to highlight the desired selection.
3. Press ENTER to accept the change.
Vector Length—predicts the target’s approximate position at a set time interval. This setting determines the length of the Vector Line, based on the time interval setting and the target’s speed. The time interval settings range from .05 minutes to 60 minutes.
Target History—is a trail showing a targets movement. Target
History can be turned On or Off.
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Own Vessel Safe Zone—is a circular area defined by a range setting that is centered on your own vessel. If a target enters the defined area an alarm is sounded. The Safe Zone can be set to a distance between
.01 and 2 nautical miles.
Time To Safe Zone—sounds an alarm if MARPA determines that a target will intersect the Own Vessel Safe Zone within the defined time interval. The time interval settings range from 3 to 24 minutes.
Safe Zone Ring—displays a ring on the Radar Page depicting the
Own Vessel Safe Zone.
Velocity Reference—has two settings, Absolute and Relative. This setting determines how speed and direction are displayed on the
MARPA list. Relative calculates target speed and direction relative to your own. Absolute displays the target’s actual speed.
Hide/Show Navigation Features
This setting hides or shows navigation features such as Waypoints, a
Bearing Line and a Course Line on the Radar Page. See page 16 for more information on selecting the Navigation Features.
Additional Adjustment Menu Items
There are three additional items available on the Adjustment Menu:
Map Cursor On/Off, Setup, and Enter Standby/Begin Transmitting.
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Map Cursor On/Off
The Map Cursor On/Off setting turns the Map Page Cursor on or off when operating in Split Screen mode or when using two chartplotters.
To turn the Map Cursor On or Off:
Use the Rocker to highlight Map Cursor On/Off and press
ENTE R.
Setup
Selecting Setup displays the Radar Setup Menu. The Radar Setup
Menu contains four sub tabs: General, Display, MARPA, and
Advanced.
The General Tab
The General tab contains settings for Orientation, Cross-talk
Rejection, Front of Boat Offset, Timed Transmit, Timed Transmit
XMIT Time, and Timed Transmit STBY Time.
To change a Setup field option:
1. Use the Rocker to highlight the field and press ENTER to show the field selections.
2. Use the Rocker to highlight the selection.
3. Press ENTER to accept the change.
The General Tab
Orientation—configures the Radar Page to display in one of three modes: Heading Up, North Up, or Course Up.
Cross-talk Rejection—radar cross-talk may occur when two or more radar equipped vessels are operating in proximity to one another. Cross-talk rejection automatically filters out the cross-talk interference.
14 GMR 21/41 Owner’s Manual
Timed Transmit—is used to save power, likely while at anchor.
When Timed Transmit is On, the radar refers to the settings in Timed
Transmit XMIT Time and Timed Transmit STBY Time. If Off is selected, the Timed Transmit XMIT Time and Timed Transmit STBY
Time fields are inactive.
Timed Transmit XMIT Time—determines a time interval in minutes the radar transmits. For example, if set to 01 min, the radar transmits for a period of one minute before referring to the Timed
Transmit STBY Time.
Timed Transmit STBY Time—determines a time interval in minutes that the radar is in stands by. For example, if set to 10 min, the radar stands by for a period of ten minutes before referring to the Timed
Transmit XMIT Time. When the radar is standing by, the scanner does not rotate or transmit; however, power is still applied to the
Magnetron, eliminating the need for a warm-up cycle.
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The Display Tab
The Display tab contains settings for Center Offset, Rings,
Background color, Heading Line, Bearing Reference, and Navigation
Features.
The Display Tab
Center Offset—has three settings: Center, Look Ahead, and Auto
Shift. Center places your current location in the center of the display.
Look Ahead shifts your current location toward the bottom of the display, allowing you to view an area farther ahead. Auto Shift adjusts your location on the display according to the current speed.
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Rings—is used to turn the radar Range Rings On or Off.
Background—is used to select a background color for the Radar
Page. The options are Black, Blue, and White.
Heading Line—is used to turn the Heading Line On or Off.
Bearing Reference—has two settings, Absolute and Relative.
Relative calculates the bearing relative to own vessel heading.
Absolute calculates the bearing referring to North.
Navigation Features—there are three selectable Navigation
Features: Waypoints, Bearing Line, and Course Line. When selected, that feature is displayed on the Radar Page.
• Waypoints—displays user waypoints on the Radar Page.
• Bearing Line—displays a bearing line on the Radar Page.
The bearing line is displayed as a line from your current position to the active destination waypoint, similar to a traditional lollipop.
• Course Line—displays a course line from your starting point to the active destination waypoint, similar to navigation on a map.
The MARPA Tab
See “MARPA Setup” on page 12.
The Advanced Tab
AFC Mode—has two settings, Auto and Manual. In Auto mode the scanner frequency is automatically adjusted for optimal performance and is recommended.
The Advanced Tab
16 GMR 21/41 Owner’s Manual
To select an AFC mode:
1. Use the Rocker to highlight the AFC Mode field, and press
ENTER.
2. Use the Rocker to highlight the selection, and press ENTER.
To manually adjust the scanner frequency:
1. Use the Rocker to highlight the Freq button, and press
ENTER.
2. Using the Rocker, adjust the scanner frequency up or down to achieve the desired effect.
3. Press ENTER to accept the frequency change.
NOTE: The Signal Strength bar graph is damped and may be slow when responding to frequency tuning changes.
Enter Standby/Begin Transmitting
Selecting Enter Standby places the scanner into Standby mode
While in Standby mode, the scanner does not transmit, but power remains applied to the Magnetron.
If the scanner is in Standby mode, Begin Transmitting is enabled.
Selecting Begin Transmitting removes the scanner from Standby mode, and after “Spinning Up”, the scanner begins transmitting.
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To select Enter Standby or Begin Transmitting:
Use the Rocker to highlight the Enter Standby or Begin
Transmitting, and press ENTER.
Map Page Radar Overlay
Radar information can be displayed as an overlay on the Map page.
With radar information overlaid on the map, many of the radar options are available by pressing the ADJ/MENU key.
It is important to note that changing the “Range” of the map does not change the scanner range. When the Map page is zoomed in or out, the radar overlay is scaled to fit.
To overlay radar data on the Map Page:
1. Press ADJ/MENU.
2. Use the Ro cker to highlight Show Radar, and press ENTER.
To hide the Radar Overlay:
1. Press ADJ/MENU.
2. Use the Rocker to highlight Radar Options, and press
ENTER.
3. Use the Rocker to highlight Hide Radar, and press ENTER.
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Map Page with Radar Overlay Radar Page
There are several Radar Options available on the Map Page. These options do affect operation of the radar and the Radar Page.
To display the Radar Options:
1. Press ADJ/MENU.
2. Use the Rocker to highlight Radar Options, and press
ENTER.
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Map Page Radar Options
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A
PPENDIX
European License Requirements
Austria
Belgium
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Ireland
Italy
Latvia
Lithuania
I
G
G
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*
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I—Requires an individual license for operation.
Luxembourg
The Netherlands
Poland
Portugal
Slovakia
Slovenia
Spain
Sweden
United Kingdom
Cyprus
Malta
Iceland
Norway
Switzerland
G—can be operated under a general license or license exemption.
* This product may require licensing in your country of use. Please refer to the national radio or telecommunications office or ministry.
*
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G
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PECIFICATIONS
Specifications
Unit Dimensions: 28” (710 mm) D x 8” (205 mm) H
Radar Scanner Weight: Unit 26 lbs; cable 8.35 lbs
Range Scales (Range Rings): GMR 40—1/8 nm (1/32 nm) to 36 nm (9 nm). GMR 20—1/8 nm (1/32 nm) to 24 nm (6 nm)
Power Output: GMR 21: 2 kW, GMR 41: 4kW
Power Input Source: 10–35 VDC, 28W.
Operating Temperature Range: -25°C to 70°C, and a relative humidity up to 95% at 35°C
Beamwidth: Horizontal beamwidth of 3.6° nominal / vertical beamwidth of 25° nominal.
Range: GMR 20—24 nm, GMR 40—36 nm.
Wind Velocity: Wind speed up to 100 Kts
Antenna RPMs: 24 rpm.
Range Ring Accuracy: +/- 1 meter
Bearing Accuracy: 1°
Minimum Range: 35 meters
Range Discrimination: 30 meters
20
Sensitivity and Tune Controls: Gain, Sea Clutter, Rain Clutter,
Frequency Tune
Radar/Chart Synchronization: Overlay Mode. split overlay with standard radar presentation.
Off Center Function: Look Ahead, Auto Shift, and Manual
RF Transmit Frequency: 9410 ± 30 MHz
GMR 21/41 Owner’s Manual
FCC Compliance
The GMR 21/41 complies with Part 80 of the FCC rules. It has received a grant of equipment authorization, issued under the authority of the FCC.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
A
PPENDIX
> FCC C
OMPLIANCE
Declaration of Conformity
Hereby, Garmin declares that this GMR 21/41 Marine Radar product 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: http://www.garmin.com/products/sp310/.
Click Manuals and then select the Declaration of Conformity.
GMR 21/41 Owner’s Manual 21
A
PPENDIX
> S
OFTWARE
L
ICENSE
A
GREEMENT
, L
IMITED
W
ARRANTY
Software License Agreement
BY USING THE GMR 21/41, YOU AGREE TO BE BOUND
BY THE TERMS AND CONDITIONS OF THE FOLLOWING
SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS
AGREEMENT CAREFULLY.
Garmin grants you a limited license to use the software embedded in this device (the “Software”) in binary executable form in the normal operation of the product. Title, ownership rights and intellectual property rights in and to the Software remain in Garmin.
You acknowledge that the Software is the property of Garmin and is protected under the United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin. You agree not to decompile, disassemble, modify, reverse assemble, reverse engineer, or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software. You agree not to export or re-export the Software to any country in violation of the export control laws of the United States of America.
LIMITED WARRANTY
This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within this period, Garmin will at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor, provided that the customer shall be responsible for any transportation cost. This warranty does not cover failures due to abuse, misuse, accident or unauthorized alteration or repairs.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN
ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES
EXPRESS OR IMPLIED OR STATUTORY, INCLUDING
ANY LIABILITY ARISING UNDER ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY
GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY
FROM STATE TO STATE.
IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY
INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE,
OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS
IN THE PRODUCT.
22 GMR 21/41 Owner’s Manual
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> L
IMITED
W
ARRANTY
Some states do not allow the exclusion of incidental or consequential damages, so the above limitations may not apply to you.
Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND
EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.
To obtain warranty service, contact your local Garmin authorized dealer. Or call Garmin Product Support at one of the numbers shown below, for shipping instructions and an RMA tracking number. The unit should be securely packed with the tracking number clearly written on the outside of the package. The unit should then be sent, freight charges prepaid, to any Garmin warranty service station. A copy of the original sales receipt is required as the proof of purchase for warranty repairs.
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.
GMR 21/41 Owner’s Manual
NOTE: The GMR 21/41 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.
Garmin International, Inc.
1200 Ease 151st Street
Olathe, Kansas 66062, U.S.A.
Phone: 913/397.8200
USA Only: 800/800.1020
FAX: 913/397.0836
Garmin (Europe) Ltd.
Unit 4, The Quadrangle, Abbey Park Industrial Estate
Romsey, S051 9DL, U.K.
Phone: 44/0870.8501241
FAX: 44/0870.8501251
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
Tel. 886/2.2642.9199
Fax 886/2.2642.9099
23
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> W
ARNINGS AND
C
AUTIONS
Caution
Failure to avoid the following potentially hazardous situations may result in injury or property damage.
Use the GMR 21/41 at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’s Manual, and thoroughly practice operation using the simulator mode prior to actual use.
When in actual use, carefully compare indications from the GMR 21/41 to all available navigation sources, including the information from other NAVAIDs, visual sightings, charts, etc. For safety, always resolve any discrepancies before continuing navigation.
IT IS THE USER’S RESPONSIBILITY TO USE THIS
PRODUCT PRUDENTLY. THIS PRODUCT IS INTENDED
TO BE USED ONLY AS A NAVIGATIONAL AID AND MUST
NOT BE USED FOR ANY PURPOSE REQUIRING PRECISE
MEASUREMENT OF DIRECTION, DISTANCE, LOCATION,
OR TOPOGRAPHY.
Warning
Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious injury.
WARNING: The radar scanner transmits electromagnetic energy. Ensure that the scanner has been installed according to the recommendations given in this guide, and that all personnel are clear of the scanner before switching to
Transmit mode.
WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is being provided in accordance with
California’s Proposition 65. If you have any questions or would like additional information, please refer to our Web site at http://www.garmin.com/prop65.
24 GMR 21/41 Owner’s Manual
Index
A
Adjustment Menu
Advanced Tab
AFC Mode
B
Background
Bearing Line
Begin Transmitting
Begin Transmitting.
C
Center Offset
change Sea Clutter setting
Clear Trails
Cross-talk Rejection
GMR 21/41 Owner’s Manual
D
E
European License Requirements 19
F
FCC Compliance
FTC
G
General Tab
Guard Zone
H
Heading Line
Heading Sensor
Hide/Show Navigation Features 5
L
M
Manually Adjust the Scanner
Map Cursor On/Off
MARPA List
MARPA Setup Menu
MARPA Tab
MARPA target
Mini Automatic Radar Plotting Aid
N
Navigation Features
O
Overlay
Own Vessel Safe Zone
R
Radar Adjustment Menu
Radar Options
Radar Page
Rain Clutter
Rings
S
Soft Key options
Status Bar
T
Timed Transmit STBY Time
Timed Transmit XMIT Time
I
NDEX
25
I
NDEX
V
Variable Range Marker
W
Waypoints
Z
Zoom Scale
26 GMR 21/41 Owner’s Manual
For the latest free software updates (excluding map data) throughout the life of your
Garmin products, visit the Garmin Web site at www.garmin.com.
© Copyright 2006 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151 st Street, Olathe, Kansas 66062, U.S.A.
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Garmin Corporation
No. 68, Jangshu 2 nd Road, Shijr, Taipei County, Taiwan www.garmin.com
Part Number 190-00665-00 Rev. A
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Table of contents
- 3 About This Manual
- 3 Terminology Used Throughout This Manual
- 5 Radar Overview
- 5 The Radar Page
- 7 Radar Page Layout
- 8 Range Rings
- 8 Heading Line
- 8 Digital Navigation Data
- 9 The Radar Configuration Page
- 9 The Radar Adjustment Menu
- 10 Gain
- 10 Sea Clutter
- 11 Rain Clutter
- 11 FTC (Fast Time Constant)
- 12 Zoom
- 12 Target Expansion
- 13 Trails
- 13 Guard Zone
- 14 VRM/EBL
- 15 MARPA
- 16 MARPA Setup
- 17 Hide/Show Navigation Features
- 17 Additional Adjustment Menu Items
- 18 Map Cursor On/Off
- 18 Setup
- 18 The General Tab
- 19 The Display Tab
- 20 The MARPA Tab
- 20 The Advanced Tab
- 21 Enter Standby/Begin Transmitting
- 21 Map Page Radar Overlay
- 23 European License Requirements
- 24 Specifications
- 25 FCC Compliance
- 25 Declaration of Conformity
- 26 Software License Agreement
- 26 LIMITED WARRANTY
- 28 Caution