Bedienungsanleitung Garmin GPSMAP 8424 MFD (Seite 33 von 64) (Englisch)

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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

away from you. On most color schemes, green indicates the

target is moving away from you and red indicates the target is

moving toward you.

Enabling a Guard Zone

You can enable a guard zone to alert you when anything comes

within a specified area around your boat.

NOTE:

This feature is not available in dual radar modes.

From a radar screen, select Menu > Radar Options >

Enable Guard Zone.

Defining a Circular Guard Zone

Before you can define the boundaries of the guard zone, you

must enable a guard zone (Enabling a Guard Zone,

page

25).

You can define a circular guard zone that completely surrounds

your boat.

From a radar screen, select Menu > Radar Options >

Adjust Guard Zone >

Adjust Guard Zone > Circle

Select the location of the outer guard zone circle.

Select the location of the inner guard zone circle to define the

width of the guard zone.

Defining a Partial Guard Zone

Before you can define the boundaries of the guard zone, you

must enable a guard zone (Enabling a Guard Zone,

page

25)

You can define the boundaries of a guard zone that does not

completely surround your boat.

From a radar screen, select Menu > Radar Options >

Adjust Guard Zone > Adjust Guard Zone > Corner 1.

Touch and drag the location of the outer guard-zone corner

Select

Corner 2.

Touch the location of the inner guard-zone corner

to define

the width of the guard zone.

Select

Done.

Disabling a Guard Zone

You can disable a guard zone.

From a radar screen, select Menu > Radar Options >

Adjust Guard Zone > Disable Guard Zone.

The guard zone configuration is saved, so you can enable it

again when needed.

MARPA

Mini-automatic radar plotting aid (MARPA) enables you to

identify and track targets and is primarily used for collision

avoidance. To use MARPA, you assign a MARPA tag to a

Radar 25

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