Using Radar

Using Cruising Mode

Cruising mode is the standard radar operation. If you switch from Sentry mode to Cruising mode, the antenna will go into full-time transmission and will disable any guard zones. You can place the radar in Cruising mode by selecting Radar > Cruising.

Use the Cruising screen to view a full-screen image of the gathered radar information. Your position is in the center of the screen, and the rings provide distance measurements.

Range rings

Zoom scale

Heading line

Distance between rings

Using Radar

The zoom scale 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 kilometers, each ring represents one kilometer from the center out. Use the RANGE (+/-) keys (GPSMAP 4000 series) or the and keys (GPSMAP 5000 series) to adjust the zoom scale.

Using Sentry Mode

Sentry mode allows you to put the radar antenna into timed-transmit mode, in which you can configure a transmit/standby cycle. You can also enable a guard zone in Sentry mode, which identifies a safe zone around your boat. An alarm sounds when a radar object enters this zone. You can place the radar in Sentry mode by selecting Radar > Sentry.

NOTE: When Sentry mode is enabled, all MARPA targets are cancelled, and you cannot acquire MARPA targets until you exit Sentry mode.

To enable timed-transmit mode, select Menu > Sentry Setup > Timed Xmit.

To set the standby and transmit times:

1.From the Radar screen, select Menu > Sentry Setup.

2.Select Timed Xmit if it is set to off, and then select Stdby Time or Xmit Time.

3.Enter the time in minutes using the ROCKER (GPSMAP 4000 series) or the onscreen keyboard (GPSMAP 5000 series), and then select Done.

To enable the guard zone from the Radar screen, select Menu > Sentry Setup > Enable Guard

Zone.

To adjust the guard zone boundaries:

1.While the guard zone is on, from the Radar screen, select Menu > Sentry Setup > Adjust Guard Zone > Move Guard Zone.

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GPSMAP® 4000/5000 Series Owner’s Manual