Investigating The Sub-Bottom Conditions - Simrad ES80 Reference Manual

8 Select
Echogram
Observe that the
9 Select the
Lines
10 Select the annotation types you wish to see in your echogram.
11 Apply the change(s) you have made.
a Select
Apply
echogram view.
b Select
Apply to All
of the same type.
12 Close the dialog box.

Investigating the sub-bottom conditions

The setting controls the gain below the detected bottom depth. This gives
Bottom Gain
you information about the current bottom conditions.
Context
Different bottom conditions (rock, sand, mud etc) will result in different bottom echoes
in the ES80 echograms. By changing the bottom gain, the presentation is changed
depending on the bottom type. You can thus 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.
The typical effect of the
Procedure
1 Click in any echogram view to make it "active".
The setting you choose will only be valid for the currently "active" echogram. The
"active" echogram view is identified with a thicker border.
2 Open the
Active
406273/C
.
dialog box opens.
Echogram
tab to open the page.
if you wish to apply the chosen setting only to the currently active
if you wish to use the chosen setting on all the echograms
adjustment
Bottom Gain
menu.
Operating procedures
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