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Bottom detector settings
The Header view on the display is also used to present the
current depth. The Bottom Detector dialogue box is used to
define various parameters associated with the bottom detection.
These include the depth range, where the EQ60 searches for the
bottom.
To open the Bottom Detector dialogue box, position the cursor
over the displayed depth in the Header view, and click the right
mouse button.
In our example we will assume that the depth will vary between
30 and 200 meters. Therefore, set Minimum Depth to 30 m and
Maximum Depth to 200 m. Click OK to accept the settings.
Note Setting both Minimum Depth and Maximum Depth to 0 m will
turn off bottom detection.
Colour scale
The Colour Scale field is used to display the colour scale for
mapping acoustical values. These colours are used in the
Echogram And Range view. Each colour always represents a
3 dB value range. Using all 12 colours in the colour scale thus
enables mapping of a 36 dB value range to colours.
Position the cursor over the colour scale, click the right mouse
button to open the Colour Scale dialogue box. Accept the
default settings and click OK.
Echogram and Range view
The Echogram and Range view consists of an Echogram field
to the left and a Range field to the right. These are separated by
the range axis. The Echogram field contains information about
the acoustical values, while the Range fieldisusedfor
specifying the range used in the Echogram field.
Echogram field
The Echogram field is used to display acoustical values for
each ping. The settings in the
Colour Scale are used to
determine the colour sensitivity in the echogram.
Position the cursor in the Echogram field, and click the right
mouse button to open the Echogram dialogue box.