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1
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.
2
Select Adjust No Transmit Zone >
Move No Transmit
Zone
.
3
Select Angle 1, and select the new location for the first
angle.
4
Select
Angle 2, and select the new location for the second
angle.
5
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
1
From a radar screen, select a location.
2
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.
1
From a radar screen, select Menu > Radar Options >
Adjust Guard Zone >
Adjust Guard Zone > Circle
.
2
Select the location of the outer guard zone circle.
3
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.
1
From a radar screen, select Menu > Radar Options >
Adjust Guard Zone > Adjust Guard Zone > Corner 1.
2
Touch and drag the location of the outer guard-zone corner
À
.
3
Select
Corner 2.
4
Touch the location of the inner guard-zone corner
Á
to define
the width of the guard zone.
5
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
33


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