Bedienungsanleitung Garmin GPSMAP 7400 series (Seite 33 von 62) (Englisch)

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Radar

WARNING

The marine radar transmits microwave energy that has the

potential to be harmful to humans and animals. Before

beginning radar transmission, verify that the area around the

radar is clear. The radar transmits a beam approximately 12°

above and below a line extending horizontally from the center of

the radar.

When the radar is transmitting, do not look directly at the

antenna at close range; eyes are the most sensitive part of the

body to electromagnetic energy.

When you connect your compatible chartplotter to an optional

Garmin

marine radar, such as a

GMR

™

Fantom

™

radar or a

GMR

24 xHD, you can view more information about your

surroundings.

The radar transmits a narrow beam of microwave energy as it

rotates to a 360° pattern. When the transmitted energy contacts

a target, some of that energy is reflected back to the radar.

Changing the Radar Mode

From a combination screen or SmartMode layout with radar,

select Menu

> Radar Menu > Change Radar

Select a radar mode.

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 an area within which the radar scanner does

not transmit signals.

NOTE:

This feature is not available on all radar and chartplotter

models.

From a radar screen, select Menu

> Radar Setup >

Installation > Enable No Transmit Zone

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

radar screen.

Select Adjust No Transmit Zone >

Move No Transmit

Zone

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.

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.

Zooming In and Out of the Radar Screen

• Pinch two fingers together to zoom out.

• Spread two fingers apart to zoom in.

• Drag the screen to pan, and then select or to zoom, if

necessary.

Marking a Waypoint on the Radar Screen

From a radar screen, select a location.

Select on a combination screen or Create Waypoint on a

full screen.

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 heading your way and which are heading

Radar 25

Garmin GPSMAP 7400 series Seite 33

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