Raymarine e7, User Reference

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9.8 Radar adjustments: HD and SuperHD digital scanners
You can use the gain 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 digital open array scanners:
Menu Item Description Options
Auto Gain Mode The digital 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 digital 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.
Using radar
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