Simrad ES80 Reference Manual page 132

Simrad ES80 Reference Manual
5 Investigate the information provided by the information pane.
The ES80 has a dynamic range of 140 dB. This means that the ES80 can receive
both very strong and very weak echoes. Naturally, we can not present all these
echoes on the display simultaneously, as this would create a mess of colours.
By default you have 64 or 12 colours available to present the echoes, and a selection
of palettes. When 12 colours are used, we create a 36 dB total range, and let each
colour present a 3 dB strength. Every colour (3 dB) the represent a doubling of the
echo strength. With 12 colours in use this will be a 36 dB colour range from grey to
brown. Grey is used for the weakest echoes, while the strongest echoes are brown.
All echoes stronger than brown will still be brown, while echoes weaker than grey
will not be shown. With 64 colours in use, each colour represents approximately
0.5 dB echo strength.
The
Colour Setup
in the ES80 echo presentations. Which colour scale to use is mainly a personal
preference based on ambient light conditions, the nature of the echoes and your
own experience. If you choose to use many colours, the resolution of the ES80
presentation is greatly improved. It is then easier to distinguish the difference
between the various echoes of different size and/or target strength.
6 Select in the top right corner to close the information pane.
Close
Further requirements
The
Information Pane Options
parameters used to present the data in the information panes. To open the
dialog box, select the button on the
Pane Options
130
dialog box allows you to choose from several colour scales to use
dialog box allows you to change the operational
menu.
Active
Information
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