Raymarine gS Series, Installation And Operation Instructions Manual, Page: 133 / 208

18.10 HD and SuperHD radar adjustments
You can use the presets and other functions to improve the quality of the radar picture.
The following settings are available from the Radar menu and
apply to HD radomes, HD and SuperHD open array scanners:
Menu Item Description Options
Preset Mode The radar gain presets enable you to quickly
select pre-configured settings to achieve the
best picture in different situations. Raymarine
strongly recommends the use of these presets
to achieve optimum results. • Buoy — a special mode that enhances the detection of small objects like
mooring buoys. It is useful at ranges up to 0.75 nm.
• Harbor — this is the default mode. This setting takes account of land clutter
so that smaller targets, like navigation buoys, are not lost.
• Coastal — accounts for the slightly higher levels of sea clutter you might
encounter out of harbor and adjusts the radar display accordingly.
• Offshore — automatically adjusts for high levels of sea clutter.
• Bird Mode — a special mode that helps you to identify flocks of birds, useful
when identifying suitable fishing locations, for example.
Note: Bird Mode requires a SuperHD open array with software
version 3.23 or above or an HD radome.
Rain The radar scanner detects echoes from rain
or snow. These echoes appear on screen as
countless small echoes continuously changing
size, intensity and position. Turning the rain
clutter function On suppresses the bulk effect
of rain returns from around your vessel, making
it easier to recognize other objects. You can
adjust the intensity of this setting between 0
and 100%. • On — enables the Rain function and allows you to adjust the setting between
0 and 100%.
• Off — disables the Rain function. This is the default.
Adjust Preset Each of the gain presets can be manually
adjusted using gain, color gain and sea clutter
functions. • Gain — enables you to use a preset in automatic mode, or to adjust its gain
manually between 0 and 100%.
• Color Gain — adjusts the intensity (color) of displayed targets, but does not
affect the number of targets displayed. Increasing the color gain causes more
targets to be displayed in the same color, which may help you to determine
whether an object is an actual target, or just background noise. Reducing the
color gain may provide better target detail and detection.
• Sea — radar echoes from waves around your vessel can clutter the center
of the radar picture, making it difficult to detect real targets. Adjusting the
sea gain reduces this clutter for up to 5 nautical miles (depending on wave
and sea conditions) from your vessel.
• SuperHD Controls — for SuperHD scanners only:
– Antenna Boost: scales the effective antenna size. At zero, the effective
antenna size matches its actual size. At 95%, the effective antenna size
is doubled. Increasing the effective antenna size separates targets that
appear merged at lower settings.
– Power Boost: adjusts effective transmit power. At zero, the radar operates
at its standard power (4 kW or 12 kW). At 90, the effective power is
increased by a factor of at least two. Increasing the power makes targets
more distinct from noise. For maximum benefit, reduce power boost to
prevent saturation of strong targets.
Selecting radar presets
These presets require a HD or SuperHD radar scanner. Bird
mode requires a SuperHD open array scanner with software
version 3.23 or above or an HD radome.
From the Radar application menu:
1. Select
Preset Mode .
2. Select Buoy, Harbor, Costal, Offshore, or Bird as appropriate.
Adjusting radar preset gain
Raymarine strongly recommends the use of the preset gain
modes to achieve optimum results. However if required manual
adjustments can be made.
From the Radar application menu, with the required Preset
Mode selected:
1. Select Adjust Preset <Mode> , where <Mode> shall be the
Preset mode already selected.
2. Select Gain .
3. The Gain slider bar control is displayed.
4. Adjust the Gain slider bar control to the appropriate setting
(between 0 and 100%), or
5. Select the Auto box so that a tick is placed in the box for
automatic gain control.
Adjusting radar preset color
From the Radar application menu, with the required Preset
Mode selected:
1. Select Menu .
2. Select Adjust Preset <Mode> , where <Mode> shall be the
Preset mode already selected.
3. Select Col: .
4. The Color slider bar control is displayed.
5. Adjust the Color slider bar control to the appropriate setting
(between 0 and 100%), or
6. Select the Auto box so that a tick is placed in the box for
automatic color control.
Radar application
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