Garmin nuvi 500-Series Manuale d'uso - Pagina 25

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Select Corner 2.

Touch the location of the inner guard-zone corner

define the width of the guard zone.

Marking a Waypoint on the Radar Screen

From a Radar screen or the Radar overlay, select a location.

Select New Waypoint.

Viewing a List of AIS Threats

From any Radar screen or the Radar overlay, you can view and

customize the appearance of a list of AIS threats.

From a Radar screen or the Radar overlay, select Menu >

Other Vessels > AIS List.

Showing AIS Vessels on the Radar Screen

AIS requires the use of an external AIS device and active

transponder signals from other vessels.

You can configure how other vessels appear on the Radar

screen. If any setting (except the AIS display range) is

configured for one radar mode, the setting is applied to every

other radar mode. The details and projected heading settings

configured for one radar mode are applied to every other radar

mode and to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu >

Other Vessels > Display Setup.

Select an option:

• To indicate the distance from your location within which

AIS vessels appear, select AIS Display Range, and

select a distance.

• To show details about AIS-activated vessels, select

Details > Show.

• To set the projected heading time for AIS-activated

vessels, select Projected Heading, and enter the time.

• To show the tracks of AIS vessels, select Trails, and

select the length of the track that appears.

VRM and EBL

The variable range marker (VRM) and the electronic bearing

line (EBL) measure the distance and bearing from your boat to

a target object. On the Radar screen, the VRM appears as a

circle that is centered on the present location of your boat, and

the EBL appears as a line that begins at the present location of

your boat and intersects the VRM. The point of intersection is

the target of the VRM and the EBL.

Showing the VRM and the EBL

The VRM and the EBL configured for one mode are applied to

other radar modes.

NOTE: The VRM and the EBL cannot be changed in sentry

mode.

From a Radar screen, select Menu > Show VRM/EBL.

Adjusting the VRM and the EBL

Before you can adjust the VRM and the EBL, you must show

them on the Radar screen

Radar

(Showing the VRM and the

You can adjust the diameter of the VRM and the angle of the

EBL, which moves the intersection point of the VRM and the

EBL. The VRM and the EBL configured for one mode are

applied to all other radar modes.

From a Radar screen, select a new location for the

intersection point of the VRM and the EBL.

Select Drop VRM/EBL.

Select Stop Panning.

Measuring the Range and Bearing to a Target Object

Before you can adjust the VRM and the EBL, you must show

them on the Radar screen

From a Radar screen, select the target location.

Select Measure Distance.

The range and the bearing to the target location appear in

the upper-left corner of the screen.

Radar Overlay

When you connect your chartplotter to an optional Garmin

marine radar, you can use the Radar overlay to overlay radar

information on the Navigation chart or on the Fishing chart.

The Radar overlay superimposes radar information on the

Navigation chart or the Fishing chart. Data appears on the

Radar overlay based on the most recently used radar mode

(such as Harbor, Offshore, or Sentry), and all settings

configurations applied to the Radar overlay are also applied to

the last-used radar mode. For example, if you use Harbor mode

and then you switch to the Radar overlay, the Radar overlay

would show Harbor mode radar data. If you changed the gain

setting using the Radar overlay menu, the gain setting for

Harbor mode would change automatically.

Radar Overlay and Chart Data Alignment

When using the Radar overlay, the chartplotter aligns radar data

with chart data based on the boat heading, which is based by

default on data from a magnetic heading sensor connected

using a NMEA ® 0183 or NMEA 2000 network. If a heading

sensor is not available, the boat heading is based on GPS

tracking data.

GPS tracking data indicates the direction in which the boat is

moving, not the direction in which the boat is pointing. If the

boat is drifting backward or sideways due to a current or wind,

the Radar overlay may not perfectly align with the chart data.

This situation should be avoided by using boat-heading data

from an electronic compass.

If the boat heading is based on data from a magnetic heading

sensor or an automatic pilot, the heading data could be

compromised due to incorrect setup, mechanical malfunction,

magnetic interference, or other factors. If the heading data is

compromised, the Radar overlay may not align perfectly with

the chart data.

Showing the Radar Overlay

The Radar overlay displays data based on the most recently

used radar mode.

Select Radar > Radar Overlay.

The radar picture appears in orange and overlays the

Navigation chart.

Stopping the Transmission of Radar Signals

From a Radar screen, select Menu > Radar to Standby.

TIP: Press

transmission.

Optimizing the Radar Display

You can adjust the radar display settings for reduced clutter and

increased accuracy.

EBL).

(Showing the VRM and the

from any screen to quickly stop radar

EBL).