Hardness Line Description - Simrad ES80 Reference Manual

User interface

Hardness Line description

The Hardness Line is a thick colour coded line that shows you the bottom reflectivity -
that is how "hard" the bottom is.
How to open
To activate the Hardness Line, click in the echogram
view to make it "active".
Select on the menu. Select the
Echogram Active Lines
tab to open the page. On the page, enable the
Lines
Hardness Line function.
Description
The Hardness Line can be added to your echogram to retrieve additional information. It
appears as thick colour coded line that follows the bottom contour. This line does not
remove information, it simply "pushes" the echo information further down in order to
show you the bottom reflectivity. You can use the Hardness Line and the Bottom Line
functions simultaneously, but each can not be used together with the White Line.
Note
This is an optional function. In order to use this functionality, a dedicated software
license is required. Contact you local dealer for more information.
When you study the bottom hardness, you can learn more about the bottom. Certain
species are known to prefer specific bottom conditions. With more knowledge, you are
better qualified to estimate the possible catch.
Tip
If you wish to keep an eye on the bottom
hardness, you can also use the Bottom Hardness
information pane. The colours on the left side of
the scale indicate a soft bottom, while the colours
on the right hand side indicate a harder bottom.
The information pane shows you the current
reflectivity measured in dB. The bottom hardness shown in the information pane was
detected by the latest ping in the selected view.
Related tasks
Enhancing the bottom contour in the echograms, page 118
Adding vertical marker lines to the echogram, page 119
Adding horizontal depth lines to the echograms, page 120
Adding a variable depth line to the echogram, page 121
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