Using radar, Understanding radar – Garmin GPSMAP 3010C User Manual

Page 97

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GPSMAP 3006C/3010C Owner’s Manual



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This section covers the features and operation of the GMR 20/40 GMR 21/41, or

GMR 404/406 marine radar when networked with your GPSMAP 3006C/3010C.

Read the installation instructions included with your Garmin Marine Radar to

install and configure your GMR 20/40 GMR 21/41, or GMR 404/406.

NOtE: You must have a GMR 20/40, GMR 21/41, or GMR 404/406 marine

radar installed and connected to your GPSMAP 3006C/3010C to use the radar

features.

Understanding Radar

The Garmin marine radar 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. Your GMR 20/40,

GMR 21/41, or GMR 404/406 is operated and adjusted using controls on your

GPSMAP 3006C/3010C. You can view radar data on the Radar Page or as an

overlay on the Map Page.
When you turn on the radar, the status bar shows the message “Radar Warming

Up” with a countdown to Standby Mode. The countdown also appears in the

middle of the Radar Page. When the countdown reaches 0 (zero), the “Hold

FCTN to transmit” message appears.

As a safety feature, the radar enters Standby Mode after it warms up. This

gives 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 marine 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 radar is clear. The radar transmits

a beam approximately 12° above and below a line extending horizontally from

the center of the scanner. Avoid looking directly at the scanner, because 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 shown. Select yes, and

then press ENtER.

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