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Related Manuals for Garmin GMR 21/41
Summary of Contents for Garmin GMR 21/41
- Page 1 Owner’s Manual GMR 21/41 marine radar...
- Page 2 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.
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Page 3: About This Manual
Garmin Product Support or an installation professional in your area. About This Manual To get the most out of your GMR 21/41, take time to read this manual and learn the operating procedures in detail. This manual is organized into the following sections. -
Page 4: Table Of Contents
Table of Contents Introduction ...i Installing Your GMR 21/41 ... i About This Manual ... i Manual Conventions ... i Product Registration ... iii Contact Garmin ...iii Software License Agreement ... iii Warning ... iv Important Information ... iv Basic Operation ...1... -
Page 5: Product Registration
Connect to our Web site at www.garmin.com/registration/. Use this area to record the serial number (8-digit number located on the bottom of the GMR 21/41) in case your GMR 21/41 needs service. Keep the original sales receipt, or a photocopy, in a safe place. -
Page 6: Warning
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. -
Page 7: Basic Operation
This section covers the features and operation of the GMR 21/41. Understanding Radar The 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. -
Page 8: Understanding The Radar Display
Headng Lne Heading Line Rng separaton The Heading Line is shown from your current position along the path of your current heading. 3/4 nm 1/2 nm 1/4 nm GMR 21/41 Owner’s Manual... -
Page 9: Radar Page
Radar Page With the radar properly installed, when you turn on your Garmin Marine Network chartplotter, it should detect the radar as a new network connection. NOTE: A software update may be needed for the radar to function properly. If the message “Incompatible Software Version”... -
Page 10: Using The Radar Adjustment Menu
2. Press up or down on the ROCKER to highlight the option you want to change, and then press ENTER. To change a Radar adjustment menu setting: 1. Select an adjustment menu option using the method described previously. 2. Press up or down on the ROCKER to change the setting, range, or percentage. 3. Press ENTER to accept the change, or press QUIT to close the Radar adjustment menu. GMR 21/41 Owner’s Manual... -
Page 11: Sea Clutter
When you select a zoom range, a window showing a zoomed portion of the screen appears in the lower-left corner and a selection box GMR 21/41 Owner’s Manual appears. To view different areas at the selected zoom range, open the Radar adjustment menu, highlight Zoom, and press the Move soft key. - Page 12 The Guard Zone Menu has two areas, “Guard Zone 1” and “Guard Zone 2.” Each area has two settings, Show (Hide) and To Define a Guard Zone: Trails Off 1. Highlight Show Guard Zone 1 or 2, and press ENTER. 2. Highlight Adjust, and press ENTER. Adjust. Guard Zone GMR 21/41 Owner’s Manual...
- Page 13 The VRM/EBL option has two tools, VRM/EBL 1 and VRM/EBL 2. EachVRM/EBL tool has two settings, Show (Hide) and Adjust. Varable Range Marker (VRM) Electronc Bearng Lne (EBL) GMR 21/41 Owner’s Manual To enable VRM/EBL 1 or VRM/EBL 2: On the Radar adjustment menu, highlight Show VRM/EBL 1 or VRM/EBL 2, and then press ENTER.
- Page 14 1. Use the ROCKER to move the pointer to the target location. 2. Press the Acquire Target soft key. When acquiring a target, a red box appears around the target. When MARPA begins tracking the target, the box is replaced with the appropriate symbol. Safe targets Acqurng target Dangerous target GMR 21/41 Owner’s Manual...
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Page 15: Map Page Radar Overlay
Standby Mode, the radar does not transmit, but power remains applied to the Magnetron. Select Begin Transmitting to remove the radar from Standby Mode. After the radar completes “Spinning Up,” the radar begins transmitting. GMR 21/41 Owner’s Manual asIc PeratIon Map Page Radar Overlay Radar information can be shown as an overlay on the Map Page. -
Page 16: Radar Tab
PeratIon adar Radar Tab When GMR 21/41 is connected to a Garmin Marine Network chartplotter, and either the Auto-Detect Services or Radar check box is selected on the System tab, the Radar tab appears on the Main Menu. To access and change a setting on the Radar tab: 1. Press the Setup soft key on the Radar Page to open the Main... -
Page 17: Display Sub Tab
• Bearing Reference—sets your bearing, either Absolute or Relative. Relative calculates the bearing relative to your vessel's heading. Absolute calculates the bearing relative to North. GMR 21/41 Owner’s Manual asIc • Navigation Features—allows you to show or hide navigational features on the Radar Page. Use the ROCKER and the ENTER key to select or clear options. -
Page 18: Marpa Sub Tab
• Velocity Reference—has two settings, Absolute and Relative. This setting determines how speed and direction are shown on the MARPA list. Relative calculates target speed and direction relative to your own. Absolute shows the target’s actual speed. GMR 21/41 Owner’s Manual... -
Page 19: Advanced Sub Tab
• AFC Mode—sets how the scanner frequency is adjusted. Select Auto to automatically adjust the scanner frequency for optimal performance (recommended). Select Manual to set the frequency manually. GMR 21/41 Owner’s Manual asIc To manually adjust the scanner frequency: 1. Highlight the AFC Mode field, and press ENTER. -
Page 20: Appendix
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 Waterproofing: IEC 60529 IPX7 Interference Rejection: Anti-jamming algorithm MARPA: Tracks up to 10 targets GMR 21/41 Owner’s Manual... -
Page 21: European License Requirements
Icense equIreMents and Declaration of Conformity (DoC) Hereby, Garmin, declares that this GMR 21/41 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/gmr21/. -
Page 22: Limited Warranty
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. -
Page 23: Fcc Compliance
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. -
Page 24: Index
Timed Transmit XMIT Time 10 Time To Safe Zone 12 trails 4, 6 vector length 12 velocity reference 12 VRM 7 VRM/EBL 4 adjusting 7 warming up 1 warranty 16 waypoints 11 zoom 4, 5 Zoom level 5 GMR 21/41 Owner’s Manual... - Page 26 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. © 2006 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, UK No.