Garmin gpsmap 740s Manuale Utente

Radar 

The Radar screen has four standard operating modes. Each mode is available for use only with a compatible 

radar.
•  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). 

•  offshore mode—intended for use in open waters, this mode works best with long-range radar signals. 
•  Sentry mode—allows you to put the radar into timed-transmit mode, in which you can configure a radar 

transmit and standby cycle to conserve power. You can also enable a guard zone in Sentry mode, which 

identifies a safe zone around your boat.

Cruising

Harbor

Offshore

Sentry

Cruising mode is the standard radar operation for the GMR 20, 21, 40, 41, 18, 18 HD, 24, 24 HD, 404, and 

406 radar. 
NoTe: If you switch from Sentry mode to Cruising mode, the radar switches to full-time transmission and 

disables all guard zones.

From the Home screen, select Radar > Cruising.
A full-screen image of the gathered radar information appears. Your position is in the center of the screen, 

and the range rings 

➊

 provide distance measurements. The distance between rings 

➋

 and the radar range 

➌

 

are shown on the bottom of the screen.

➋

➌

➊