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GMR 20/40 Owner’s Manual i
INTRODUCTION
About This Manual
Congratulations, and thank you for choosing Garmin’s GMR 20/40
Marine Radar. The addition of the GMR 20/40 Marine Radar to your
Garmin Marine Network, enhances the capability of your system by
adding graphical radar data to your Garmin Marine Network.
This manual covers the features and operation of the GMR 20/40
Marine Radar when viewed on the Garmin Marine Network
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.
Introduction:
The introduction contains information about this
manual and the Table of Contents.
Main Pages: The Main Pages contain information on the setup and
operation of the GMR 20/40.
Appendix: The Appendix contains information such as specifications,
and license requirements. You can also find warranty and FCC
information in the Appendix.
Index: Use the Index as a key word search to help you find
information more quickly.
Terminology used Throughout this Manual
• This manual refers to the radome hardware as the “scanner,”
“Radar,” or “GMR 20/40.” 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 Arrow Keypad
on the chartplotter to move the cursor to the desired item. The
on-screen cursor is represented by changing the color of the
highlighted box to yellow.
INTRODUCTION > ABOUT THIS MANUAL