2
Select
Down
to lower the gain until the semi-circular,
streaked pattern disappears from the Radar screen.
Reducing the gain to eliminate side-lobe interference may
cause smaller or distant targets to blink or disappear from the
Radar screen.
Radar Filter Settings
Adjusting Sea Clutter on the Radar Screen
You can adjust the appearance of clutter caused by choppy sea
conditions. The sea clutter setting affects the appearance of
nearby clutter and targets more than it affects the appearance of
distant clutter and targets. A higher sea clutter setting reduces
the appearance of clutter caused by nearby waves, but it can
also reduce or eliminate the appearance of nearby targets.
NOTE:
Depending upon the radar in use, the sea clutter setting
configured for use in one radar mode may or may not be applied
to other radar modes or to the radar overlay.
NOTE:
Not all options and settings are available on all radar and
chartplotter models.
1
From a radar screen or the radar overlay, select
Menu
>
Radar Filters
>
Sea Clutter
.
2
Select an option:.
• Select an
Auto
option based on the sea conditions.
• Select
Up
or
Down
to adjust the appearance of sea clutter
until other targets are clearly visible on the radar screen.
Select a setting that reflects the present sea conditions.
Clutter caused by sea conditions may still be visible.
When using a compatible radar model, the chartplotter adjusts
the sea clutter based on the sea conditions automatically.
Adjusting Rain Clutter on the Radar Screen
You can adjust the appearance of clutter caused by rain.
Reducing the radar range also can minimize rain clutter
(
The rain clutter setting affects the appearance of nearby rain
clutter and targets more than it affects the appearance of distant
rain clutter and targets. A higher rain clutter setting reduces the
appearance of clutter caused by nearby rain, but it can also
reduce or eliminate the appearance of nearby targets.
NOTE:
Depending upon the radar in use, the rain clutter settings
configured for use in one radar mode may or may not be applied
to other radar modes or to the radar overlay.
1
From a radar screen, select
Menu
>
Radar Filters
>
Rain
Clutter
.
2
Select
Up
or
Down
to decrease or increase the appearance
of nearby rain clutter until other targets are clearly visible on
the radar screen.
Clutter caused by rain may still be visible.
Averaging Multiple Scans on the Radar Screen
You can average the results of multiple scans on the radar
screen. This can be an effective method to filter out noise and
enhances the detection of consistent targets. Averaging is most
effective when using a longer range.
1
From a radar screen or the radar overlay, select
Menu
>
Radar Filters
>
Scan Average
.
2
Select an option.
The High setting filters out the most noise.
Radar Options Menu
From a radar screen, select
Menu
>
Radar Options
.
MotionScope™
: Uses the Doppler effect to detect and highlight
moving targets to help you avoid potential collisions, find
flocks of birds, and track weather formations (
). This option is only
available on Fantom models.
Pulse Exp.
: Increases the duration of the transmit pulse, which
helps maximize the energy directed toward targets. This
helps to enhance the detection and identification of targets.
This option is only available on xHD radome and xHD2 open
array models.
Target Size
: Adjusts the size of targets, by adjusting the pulse
compression processing. Select smaller targets for a sharp,
high resolution radar image. Select larger targets to display
larger echos for point targets, like boats and buoys. This
option is only available on Fantom models.
Echo Trails
: Enables you to track the movement of vessels on
the radar screen. This option is not available on xHD open
array or HD/HD+ radome models.
VRM/EBL
: Shows the variable range marker (VRM) circle and
the electronic bearing line (EBL) to allow you to measure the
distance and bearing from your boat to a target object (
).
Guard Zone
: Sets a safe zone around your boat and sounds an
alarm when anything enters the zone (
).
Timed Transmit
: Helps conserve power by transmitting radar
signals at set intervals.
Radar Setup Menu
From a radar screen, select
Menu
>
Radar Setup
.
Source
: Selects the radar source when more than one radar is
connected to the network.
Chart Display
: Shows the chart under the radar image. When
enabled, the Layers menu appears.
Orientation
: Sets the perspective of the radar display.
Crosstalk Rej.
: Reduces the appearance of clutter caused by
interference from another nearby radar source.
Rotation Spd.
: Sets the preferred speed at which the radar
rotates. The High Speed option can be used to increase the
refresh rate. In some situations, the radar automatically
rotates at the normal speed to improve detection, for
example, when a longer range is selected or when
MotionScope or Dual range is used.
Appearance
: Sets the color scheme, look-ahead speed, and
navigation appearance.
Installation
: Allows you to configure the radar for the
installation, such as setting the front of the boat and the
antenna park position.
Reducing Cross Talk Clutter on the Radar Screen
You can reduce the appearance of clutter caused by
interference from another nearby radar source, when the cross
talk reject setting is on.
NOTE:
Depending upon the radar in use, the cross talk reject
setting configured for use in one radar mode may or may not be
applied to other radar modes or to the Radar overlay.
From a Radar screen or the Radar overlay, select
Menu
>
Radar Setup
>
Crosstalk Rej.
.
Radar Appearance Settings
From a radar screen, select
Menu
>
Radar Setup
>
Appearance
.
NOTE:
These settings do not apply to the radar overlay.
Bkgd. Color
: Sets the color for the background.
Frgd. Color
: Sets the color scheme for the radar returns.
Brightness
: Sets the brightness of various radar features, such
as range rings and tracking symbols.
Look-Ahead Speed
: Shifts your present location toward the
bottom of the screen automatically as your speed increases.
Enter your top speed for the best results.
Radar
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