Bedienungsanleitung Garmin VOLVO PENTA GLASS COCKPIT Gpsmap 722 (Seite 41 von 74) (Englisch)

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Vessel

Radar Overlay

When you connect your chartplotter to an optional Garmin

marine radar, you can use overlay radar information on the

Navigation chart or on the Fishing chart.

Data appears on the radar overlay based on the most recently

used radar mode and all settings configurations applied to the

radar overlay are also applied to the last-used radar mode.

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.

Transmitting Radar Signals

NOTE: As a safety feature, the radar enters standby mode after

it warms up. This gives you an opportunity to verify the area

around the radar is clear before beginning radar transmission.

With the chartplotter off, connect your radar as described in

the radar installation instructions.

Turn on the chartplotter.

If necessary, the radar warms up and a countdown alerts you

when the radar is ready.

Select Radar.

Select a radar mode.

A countdown message appears while the radar is starting up.

Select Menu > Transmit Radar.

Stopping the Transmission of Radar Signals

From a radar screen, select Menu > Radar To Standby.

TIP: Press > Radar To Standby from any screen to

quickly stop radar transmission.

Setting Up the Timed Transmit Mode

To help conserve power, you can set up time intervals in which

the radar will transmit and not transmit (standby) signal

transmissions.

NOTE: This feature is not available in dual radar modes.

From a radar screen, select Menu > Radar Options > Timed

Transmit.

Select Timed Transmit to enable the option.

Select Stdby Time, enter the time interval between radar

signal transmissions, and select Done.

Select Transmit Time, enter the duration of each radar

signal transmission, and select Done.

Enabling and Adjusting a Radar No Transmit Zone

You can indicate areas within which the radar scanner does not

transmit signals.

NOTE: GMR Fantom and xHD2 radar models support two no-

transmit zones. Most other GMR radar models support one no-

transmit zone. GMR 18 HD+ radar models do not support no-

transmit zones.

From a radar screen, select Menu > Radar Setup >

Installation > No Transmit Zone.

The no-transmit zone is indicated by a shaded area on the

radar screen.

Select Angle 1, and select the new location for the first

angle.

Select Angle 2, and select the new location for the second

angle.

Select Done.

If necessary, repeat for the second zone.

Adjusting the Radar Range

The range of the radar signal indicates the length of the pulsed

signal transmitted and received by the radar. As the range

increases, the radar transmits longer pulses in order to reach

distant targets. Closer targets, especially rain and waves, also

reflect the longer pulses, which can add noise to the Radar

screen. Viewing information about longer-range targets can also

decrease the amount of space available on the Radar screen for

viewing information about shorter-range targets.

• Select to decrease the range.

• Select to increase the range.

Tips for Selecting a Radar Range

• Determine what information you need to see on the Radar

screen.

For example, do you need information about nearby weather

conditions or targets and traffic, or are you more concerned

about distant weather conditions?

• Assess the environmental conditions where the radar is being

used.

Especially in inclement weather, longer-range radar signals

can increase the clutter on the Radar screen and make it

more difficult to view information about shorter-range targets.

In rain, shorter-range radar signals can enable you to view

information about nearby objects more effectively, if the rain

clutter setting is configured optimally.

• Select the shortest effective range, given your reason for

using radar and the present environmental conditions.

MotionScope

™

Doppler Radar Technology

The GMR Fantom radar uses the Doppler effect to detect and

highlight moving targets to help you avoid potential collisions,

find flocks of birds, and track weather formations. The Doppler

effect is the frequency shift in the radar echo due to the relative

motion of the target. This allows for instant detection of any

targets moving toward or away from the radar.

The MotionScope feature highlights the moving targets on the

radar display so you can navigate around other boats or severe

weather, or toward fishing spots where birds are feeding at the

surface.

The moving targets are color-coded so you can tell at a glance

which targets are moving toward or away from you. On most

Radar 33

Garmin VOLVO PENTA GLASS COCKPIT Gpsmap 722 Seite 41

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