B&G Vulcan, Руководство оператора

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Setting up the DownScan image
Use the DownScan menu to set up the image. When the cursor is
active, some options in the menu are replaced with cursor mode
features. Select
Clear cursor
to return to the normal menu.
Range
The range setting determines the water depth that is visible on the
image.
Auto range
By default, the range is set to Auto. With Auto, the system
automatically displays the whole range from the water surface to
the bottom.
Preset range levels
Allows for the selection of a specific depth range that is not tied to
the depth of the water.
Frequency
DownScan can be used at 800 kHz or 455 kHz. 800 kHz provides the
highest resolution with less range. 455 kHz has the best range, but
with lower resolution.
Contrast
The contrast determines the brightness ratio between light and
dark areas of the screen. This makes it easier to distinguish object
from the background.
Drag the bar up or down to get the desired contrast setting or
select Auto contrast.
Palettes
You can select between several display palettes optimized for a
variety of fishing conditions.
DownScan | Vulcan Operator Manual
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