Garmin GMR 21 Radar Detector User Manual
Contents
1. e This manual uses the term chartplotter when referring to a Garmin GPSMAP 3000 series multi function display e 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 e 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 INTRODUCTION gt TABLE OF CONTENTS NNER OCC CIO ecca E i ADOULTHIS Manual esnia a i Terminology used Throughout this Manual i GMR 21 41 Operation assssssessnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnn 1 Radar Overview ccccssssesssessseseesseeeeceeseeseseeseesesseseesonseeaseas 1 The Radar Page sssssssssesussuennnusnnnnsnnnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnn 1 Radar Pare cb 0 10 ee ne ce ee eee tee en mene 3 A E A AE E A AA 4 Heading LiNE cessano aanne EE ERA 4 Digital Navigation Data cccccscscsesceseessssessssscsesesessteeseeees 4 The Radar Configuration Page s ssssssssssesusssnnsnsnnnnnnsnnrnnnnns 5 The Radar Adjustment MenU ss ssssssssssssssssrnsnnrnsnnsnnrnsnnnnsnnnns 5 E EE AA EA EE TE E SR A A ET 6 BEL a E 6 Bane O ee E E E E tuiaarantnc tect 7 FTC Fast Time Constant ssassn 7 TAS T EEI ve PE E E E EE E2. 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 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt RADAR Pace LAYOUT 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 er b Normal Operation ence Range rings Digital navigation Heading line data Zoom scale 5 f N 3go 51 3QQ Soft key options Ring separation z X s Jal Wo3 49 bi O5 J VRM EBL MARPA GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt RANGE RINGS HEADING LINE DiGITAL NAVIGATION DATA 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 deg
3. Owner s Manual GMR 21 41 fGidiaeleeel Copyright 2006 Garmin Ltd or its subsidiaries Garmin International Inc Garmin Europe Ltd Garmin Corporation 1200 East 151 Street Unit 5 The Quadrangle No 68 Jangshu 2 Road Olathe Kansas 66062 U S A Abbey Park Industrial Estate Shir Taipei County Taiwan Tel 913 397 8200 or 800 800 1020 Romsey S051 9DL U K Tel 886 2 2642 9199 Fax 913 397 8282 Tel 44 0870 8501241 Fax 886 2 2642 9099 Fax 44 0870 8501251 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 c
4. 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 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt Map Pace RADAR OVERLAY 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 1s scaled to fit To overlay radar data on the Map Page 1 Press ADJ MENU 2 Use the Rocker 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 GMR 21 41 Operation
5. gt THE RADAR ADJUSTMENT MENU To change the Sea Clutter setting FTC Fast Time Constant 1 Use the Rocker to move the slider to a preset or other Adjusting the Fast Time Constant can help eliminate distant screen position clutter caused by rain The Fast Time Constant has four presets Off 2 Press ENTER to accept the change Low Medium and High The preset positions can also be selected using the soft key options To change the FTC setting Rain Clutter 1 Use the Rocker to select a new setting Adjusting the Rain Clutter setting can help remove screen clutter 2 Press ENTER to accept the change caused by rain at close ranges Selecting Rain Clutter displays the The FTC settings can also be selected using the soft key options 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 A Low 3 Medium 4 High FTC Menu GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU Zoom Target Expansion When a Zoom level is selected a window showing a zoomed portion of Target Expansion increases the size of a target Target Expansion has the screen appears and a selection box is shown The selection box can be two settings On and Off The Target Expansion setting has no effect moved to see different areas The Zoom setting has four presets Off 2x 4x at range settings of 4 nm or greater and
6. 19 F Fast Time Constant 7 FCC Compliance 21 features 3 Front of Boat Offset 15 FTC 5 7 G Gain 5 6 General Tab 14 Guard Zone 5 9 H Heading Line 3 4 15 16 Heading Sensor 11 Hide Show Navigation Features 5 highlight i L Limited Warranty 22 Manually Adjust the Scanner 17 Map Cursor 13 Map Cursor On Off 14 Map Page Radar Overlay 17 MARPA 5 11 MARPA function 11 MARPA List 12 MARPA Setup 12 MARPA Setup Menu 12 MARPA Tab 16 MARPA target 11 Mini Automatic Radar Plotting Aid 11 N Navigation Features 5 13 15 16 O Orientation 14 Overlay 17 Overview Own Vessel Safe Zone 13 R Radar Adjustment Menu 5 Radar Configuration 5 Radar Configuration Page 5 Radar Options 18 Radar Overlay 17 Radar Overview Radar Page Radar Page Layout 3 Radar Warming Up 2 Rain Clutter 5 7 Range Rings 3 4 Rings 15 16 Ring Separation 3 S safety feature 2 Safe Zone Ring 13 Sea Clutter 5 6 Setup 13 14 Signal Strength 17 Software License Agreement 22 software update 1 Soft Key options 3 Specifications 20 Spinning Up 2 Status Bar 2 3 T Target Expansion 5 8 Target History 13 Terminology 1 Timed Transmit 15 Timed Transmit STBY Time 15 Timed Transmit XMIT Time 15 Time To Safe Zone 13 Trails 5 9 25 Variable Range Marker 10 Vector Length 13 Velocity Reference 13 VRM EBL 5 10 W Warming Up 2 WARRANTY 22 Waypoints 16 Z Zoom 5 8 Zoom level 8 Zoom Scale 3 26 GMR
7. 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 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 Road Shijr Taipei County Taiwan www garmin com Part Number 190 00665 00 Rev A
8. E O T 8 Target EXPANSION 12 ccucisascorssecenseinctesandsanis nndneestipuasesensoeianeraamneatats 8 RAG ee sive teen et tea risa cet T Beane ten eae E 9 GA OM aceite teeta E A E E E 9 NRN ED Cosette e EE E T 10 MARE Ionesei ER daetteeeiigsneeets 1 MARPA Spi secsi tit centdnel eretenctaioouncacees 12 Hide Show Navigation Features cccccccsssscscsssscesesessereseees 13 Additional Adjustment Menu Items ccceccsseeseseeseseseesees 13 Map Cursor C O veiises caconacsaranntacetatertpestenednaeasiowacnevenineariaentwek 14 ii E o APEA E E E AA A A SA AE E 14 The General Tib esunionadiersnsa ien AER 14 Te SOLA TAD ie eeayocetnesentianend aecuets 15 The MARPA Tab asiccsiesanesinsviuaeniainsontonsnsenstecamivnseubestsmelecetsess 16 The Advanced Tab raramesnnunsonaneiiinnnnaa 16 Enter Standby Begin Transmitting cccccccsesesseseseseeeesteeeeeees 17 Map Page Radar Overlay ssssssssssssssseseseeeseees 17 ADDE NOD oinen EA o iE EEEO 19 European License Requirements ccccsecsssseeseeseees 19 Specifications s assosseseennennsnnsnnsnnnnnrnnrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnne 20 FCC Compliance s ssssssssssssnennsnnnnurnurnusnurnnnnnnnnrnnnnnrnnnnnnnnn 21 Declaration of Conformity sessssessssssusnsnsnnnnsnnnnsnnnnnnnnnnnnns 21 Software License Agreement sssssssssssurnsnsnnsnsnnnnsnnnnnnsnnnas 22 Limited Wa rraniy ssssisirisssnsonniioiniaisoininiiiiain aniani 22 Warning and Cautio
9. Move To change the Zoom setting To turn Target Expansion On or Off 1 Use the Rocker to select a new setting 1 Use the Rocker to highlight On or Off 2 Press ENTER to accept the change 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 Press ENTER to activate the Move function 3 Use the Rocker to move the selection box to a new location Press ENTER to accept the move Target Expansion Off Target Expansion On Zoom view selection box 8 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU Trails Guard Zone When the Trails function is on all returns on the display leave a A Guard Zone is a user defined area of protection If a target enters history trail The Trails setting determines the length of the history the defined Guard Zone an alarm is sounded Two Guard Zones can trail The Trails setting has four presets Off Short Medium and be defined at any given time Long The Guard Zone Menu has two areas Guard Zone 1 and Guard To change the Trails setting Zone 2 Each area has two settings Show Hide and Adjust 1 Use the Rocker to select a new setting 2 Press ENTER to accept the change Trails Off Trails On medium Guard Zone To clear the Trails select Clear Trails on the Adjustment Menu or
10. following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help GMR 21 41 Owner s Manual APPENDIX gt FCC CompPLiANCE 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 21 APPENDIX gt SOFTWARE LICENSE AGREEMENT LiMiTED WARRANTY 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 furt
11. ARNING 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 24 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 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 GMR 21 41 Owner s Manual About This Manual 1 Adjustment 5 Adjustment Menu 5 Advanced Tab 16 AFC Mode 16 17 B Background 16 Background color 15 Bearing Line 16 Bearing Reference 15 16 Begin Transmitting 17 Begin Transmitting 13 C Caution 2 Center Offset 15 change Sea Clutter setting 7 change the Gain 6 Clear Trails 9 Configuration 5 Course Line 16 Cross talk Rejection 14 GMR 21 41 Owner s Manual Define a Guard Zone 10 Digital Navigation Data 3 4 Display Tab 15 E EBL 10 Electronic Bearing Line 10 Enter Standby 13 17 European License Requirements
12. NTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT GMR 21 41 Owner s Manual 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 APPENDIX gt LIMITED WA
13. RRANTY A 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 APPENDIX gt WARNINGS AND CAUTIONS 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 Warning Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious injury W
14. THE RADAR ADJUSTMENT MENU 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 ENTER 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 14 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 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 in
15. 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 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 NOTE The MARPA function requires the use of a heading GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU performance Each target being tracked by MARPA is represented by a symbol The symbols indicate the current state of the target C Acquiring target O Target is safe A Target is dangerous Lost target For each target a number and Vector Li
16. active 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 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU The Display Tab The Display tab contains settings for Center Offset Rings Background color Heading Line Bearing Reference and Navigation Features On White On Relay O v E 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 GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU 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 Hea
17. cker or Data Entry keys Sea Clutter Rain Clutter E FL Zoom Target Expansion Trails Guard Zone VRM EBL 10 MARPA 11 Hide Navigation Features 12 Map Cursor On 13 Setup 14 Enter Standby Radar Adjustment Menu GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU 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 GMR 21 41 Owner s Manual GMR 21 41 OPERATION
18. ding 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 e 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 e Course Line displays a course line from your starting point to the active destination waypoint similar to navigation on a map 16 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 1s automatically adjusted for optimal performance and is recommended e ee pi nm tte nm The Advanced Tab 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
19. efined time interval The time interval settings range from 3 to 24 minutes MARPA Setup Menu Safe Zone Ring displays a ring on the Radar Page depicting the Own Vessel Safe Zone To o change a MARPA field option Velocity Reference has two settings Absolute and Relative This Use the Rocker to highlight the desired field and press setting determines how speed and direction are displayed on the ENTER to activate the field selections MARPA list Relative calculates target speed and direction relative to 2 Use the Rocker to highlight the desired selection your own Absolute displays the target s actual speed 3 Press ENTER to accept the change 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 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 Additional Adjustment Menu Items Target History is a trail showing a targets movement Target There are three additional items available on the Adjustment Menu History can be turned On or Off Map Cursor On Off Setup and Enter Standby Begin Transmitting GMR 21 41 Owner s Manual 13 GMR 21 41 OPERATION gt
20. gt Map Pace 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 18 1 Measure Distance 2 Hide Detail 3 Hide Radar 4 Radar Options gt 5 Show Weather 1 Weather Opt ions gt 7 Radar Cursor On DU we 2 Sea Clutter Off 8 Setup 3 Rain Clutter Off 9 Weather Legend 4 FTC Off gt 5 Target Expansion Off gt 6 MARPA gt 7 Enter Standby 8 Hide Radar Map Page Radar Options GMR 21 41 Owner s Manual APPENDIX gt EUROPEAN LICENSE REQUIREMENTS APPENDIX European License Requirements Austria Belgium G fhe Netherland The Netherlands 1 Poland G Slovakia l G Ce Finland Slovenia Spain sweden I Requires an individual license for operation 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 GMR 21 41 Owner s Manual 19 APPENDIX gt SPECIFICATIONS Specifications Unit Dimensions 28 710 mm D x 8 205 mm H Radar Scanner Weight Unit 26 lbs cable 8 35 Ibs Range Scales Range Rings GMR 40 1 8 nm 1 32 nm to 36 nm 9 nm GMR 20 1 8 nm 1 32 n
21. her 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 22 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 INCIDE
22. m 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
23. ne 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 ER target and press ENT continued 11 GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU While a target is being designated a box is placed around the target To display the MARPA List When MARPA begins tracking the target the box 1s replaced with the Use the Rocker to highlight MARPA List and press ENTER appropriate symbol ID Bearing Range Course Speed CPA TCPA 00 49 36 03 47 01 Passed 00 18 47 MARPA List Acquiring Target Tracking Target 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 12 GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU 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 a ae 3 target will intersect the Own Vessel Safe Zone within the d
24. ns c ccsssssscsecsessssesseesessessessesenees 24 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt RADAR OVERVIEW THE RADAR PAGE GMR 21 41 OPERATION When the new radar is detected the chartplotter automatically adds a dedicated Radar Page to the pages list If the Radar Page is Radar Overview not available press and hold ADJ MENU until the Main Menu is The Garmin GMR 21 41 transmits a narrow beam of microwave displayed Use the Rocker to highlight the System tab and select energy in a rotating 360 pattern When the transmitted energy Radar from the Services list at the bottom of the page contacts a target some of that energy 1s 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 To Select the Radar Page for display 1 Press PAGE to display the Pages list 2 Using the Rocker select Radar 3 Press ENTER 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 1 Map connection 9 Rada 3 Compass NOTE A software update may be needed for the GMR 21 41 4 Highway to function properly If the message Incompatible Software Pages List Version is displayed
25. press the Clear Trails soft key continued GMR 21 41 Owner s Manual 9 GMR 21 41 OPERATION gt THE RADAR ADJUSTMENT MENU To Define a Guard Zone 1 Use the 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 10 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 GMR 21 41 Owner s Manual To move the center location of the
26. rees The tick marks can help in quickly determining the azimuth to a target The lower scale represents the distance between the Range Rings 3 4 nm 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 N 38 51 353 W094 47 943 GMR 21 41 Owner s Manual GMR 21 41 OPERATION gt THE RADAR CONFIGURATION PAGE THE RADAR ADJUSTMENT MENU 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 To display the Radar Configuration Page Press and hold DATA CONFIG She Zan yg T NER Defaults Radar Configuration Page GMR 21 41 Owner s Manual 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 Ro
27. urrent 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 INTRODUCTION 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 GMR 21 41 Owner s Manual INTRODUCTION gt ABouT THIS MANUAL 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
28. 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 1 GMR 21 41 OPERATION gt THE RADAR PAGE 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 1s also displayed in the middle of the Radar Page When the countdown reaches zero the message changes to Hold FCTN to transmit k ig a gt fal Radar Warming Up 63 Seconds Until Standby Standby In 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 1s clear press and hold FCTN The message Do you want to begin radar transmission
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