Simrad ES80 Reference Manual page 313

Description
You use
Start Range
words, this is the depth of the "top" of the echogram. The
"bottom" depth, while the
The start range you specify applies to the currently selected echogram. It is identified
with a thick border. Several echogram types are available.
Tip
If you wish to apply the new start range setting to all the current echograms of the same
type, select
Apply to all
To select which echogram types you wish to see in the ES80 presentations, use the
dialog box.
Echogram
You can only type a new value if a computer keyboard is connected to your ES80
Processor Unit. Without a keyboard, select a predefined value. You can also adjust the
setting by clicking the [+] and [−] buttons.
Example
in a surface related echogram
Start Range
In a surface echogram, set the
make the echogram start from the sea surface (provided that the transducer
offset has been defined). Set
echogram will now show the area from the sea surface and down to 20
meters "below" the bottom. The bottom contour is easily detected when
the depth changes.
Example
in a pelagic echogram
Start Range
In a pelagic echogram, set the
the echogram start from 20 meters below the sea surface (provided that the
transducer offset has been defined). Set
will now show the area from 20 meters below the sea surface, and down to
60 meters below the transducer. Provided that the depth is larger than 60
meters, the bottom contour is not shown.
Example
and
Start Range
In a bottom echogram, set the
make the echogram start from 5 meters above the bottom. Set
5 meters plus 10 = 15 meters. The echogram will now show the area from
5 meters above the depth, and down to 10 meters "below" the bottom. The
bottom contour will appear as a flat line.
406273/C
to define the minimum depth of the displayed targets. In other
setting specifies the "top" depth.
Start Range
.
Start Range
Range
Start Range
in bottom related echogram
Range
Start Range
Functions and dialog boxes
Range
value to 0 meters. This will
to the current depth plus 20 meters. The
value to 20 meters. This will make
to 40 meters. The echogram
Range
value to –5 meters. This will
setting specifies the
to the
Range
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