Garmin GPSMAP 7215 - Manual (Page 78)

72 GPSMAP ® 6000/7000 Series Owner’s Manual
Radar
Radar

WARNING
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 radar. Avoid looking
directly at the radar, because the eyes are the most susceptible parts of the body.
When you connect your chartplotter to an optional Garmin marine radar such as a GMR
™ 404/406 or a GMR
18/24, you can view more information about your surroundings. The radar connects through the Garmin
Marine Network and shares radar data with all networked chartplotters.
The GMR transmits a narrow beam of microwave energy as it rotates in a 360° pattern. When the transmitted
energy contacts a target, some of that energy is reflected back to the radar.
Transmitting Radar Signals
1. Turn on the network.
The radar warms up and a countdown is provided to alert you when the radar is ready.
Note: As a safety feature, the radar enters standby mode after it warms up. This gives you an opportunity
to verify that the area around the radar is clear before beginning radar transmission.
2. From the Home screen, select Radar .
3. Select Cruising , Harbor , offshore , Dual Range , or Sentry .
A countdown message appears while the radar is starting up, and the “Ready to Transmit” message appears.
4. Select Menu > transmit Radar .
A “Spinning Up” message appears for a few moments, and the radar begins painting an image.
Stopping the Transmission of Radar Signals
From the Radar screen, select Menu > Radar to Standby .
Adjusting the Zoom Scale on the Radar Screen
The zoom scale, also called the radar range, represents the distance from your position (the center) to the
outermost ring. Each ring represents an even division of the zoom scale. For example, if the zoom scale is set
at three miles, each ring represents one mile from the center out.
• For the GPSMAP 7000 series, from the Radar screen , touch the and buttons.
• For the GPSMAP 6000 series, press the
Range keys ( - / + ).
Radar Display Modes
The Radar screen has five standard operating modes. Each mode is available for use only with a compatible
radar ( page 73 ).
• Cruising mode—shows a full-screen image of the gathered radar information.
• Harbor mode—intended for use in inland waters, this mode works best with short-range radar signals (2
nm or less).