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40 GPSMAP
®
4000/5000 Series Owner’s Manual
Using Radar
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.
Distance
between rings
Range rings
Heading line
Zoom scale
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
congure a transmit/standby cycle. You can also enable a guard zone in Sentry mode, which
identies 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.