Simrad ES80 Reference Manual page 245

User interface
Description
The School Response information pane is a plot.
It shows the how echo strength for a group of
targets (for example a school of fish) changes
with the operational frequency. The pane allows
you to identify the nature of the schools, and
discriminate between them.
Scientific research has proven that the variation in
echo strength between echo sounder frequencies
is different between species. Some species
are easy to recognize using a higher frequency,
while others are more easily detected using a low
frequency. By means of this information pane,
you can investigate how the echoes from the
fishes changes with different frequencies.
We do not have an answer book for this. You
need to build you own knowledge and experience
based on the species you normally fish for.
By default, you have two echograms for each
frequency channel. The presentation is split horizontally to show these echograms. The
information pane provides information about its source, that is from which echogram the
data comes from. The following sources can be shown:
• Source: Lower Echogram
• Source: Upper Echogram
• Source: Zoom
Before you open an information pane, you must first click in an echogram view to
make it "active". By doing this you select the channel. In most cases, the data in the
information pane is only valid for the selected channel. In this context, the phrase
channel is used as a common term to identify the combination of transceiver, transducer
and operating frequency.
You can easily change the physical size and shape of each information pane.
Click in its lower right corner, and drag to a new size. To reset the information
pane to its default size, select the button in its top right corner.
Reset size
The function allows you to adjust how much you are able to see "through"
Transparency
the information panes you have opened. You can adjust the setting from 0% (no
transparency) to 90% (almost full transparency) in steps of 10%.
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