Garmin GPSMAP 740 Owner's Manual

Also see for GPSMAP 720: Technical reference Important safety information Owner's manual Installation instructions Quick reference guide

Contents

Garmin GPSMAP 740 Owner's Manual Manual pdf 58 page image

54 GPSMAP 700 Series Owner’s ManualRadarRadar WARNINGThe 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 beamapproximately 12° above and below a line extending horizontally from the center of the radar. Avoid lookingdirectly 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 GMR18/24, you can view more information about your surroundings.The GMR transmits a narrow beam of microwave energy as it rotates in a 360° pattern. When the transmittedenergy contacts a target, some of that energy is reflected back to the radar.Transmitting Radar Signals1. With the chartplotter off, connect your radar as described in the radar installation instructions.2. Turn on the chartplotter.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 opportunityto verify that the area around the radar is clear before beginning radar transmission.3. From the Home screen, select Radar.4. Select Cruising, Harbor, offshore, or Sentry.A countdown message appears while the radar is starting up, and the “Ready to Transmit” message appears.5. Select Transmit.A “Spinning Up” message appears for a few moments, and the radar begins painting an image.Stopping the Transmission of Radar SignalsFrom the Radar screen, select To Standby.Transmitting Radar Signals from any Screen1. Press and release to open the display screen.2. Complete an action:• Select Transmit Radar.• Select Radar to Standby.Adjusting the Zoom Scale on the Radar ScreenThe zoom scale, also called the radar range, represents the distance from your position (the center) to theoutermost ring. Each ring represents an even division of the zoom scale. For example, if the zoom scale is setat three miles, each ring represents one mile from the center out.Touch and to zoom out and zoom in.