Simrad ES80 Reference Manual page 316

Simrad ES80 Reference Manual
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 old paper sounders had a dynamic range of 12 dB in their printouts using the
"colours" from light grey to black. The dynamic range in the ES80 colour presentation
is thus a lot larger; 24 dB or 250 times. Along this dynamic range we take the 36 dB
range and "move it" up and down.
Note
Your choice of colour scale has no effect on the gain settings. The colour scale only
controls the visual presentation of the ES80 echo data.
Details
Gain
This setting controls the gain applied to the currently selected ("active") echogram
Select either side of the button to choose a value. Select the middle of the button to
open it. If you have a keyboard connected to the ES80, you can type the requested
value into the text box. You can also change the value by selecting - and holding -
the middle of the button, and move the cursor sideways. Move the cursor towards
left to reduce the value, or towards right to increase the value. Release the mouse
button when the requested value is shown in the button.
Apply to all
By default, the gain setting is only applied to the currently selected echogram
(identified with a thick border). You may wish to adjust the gain on all the
echograms of the same type. To do this, click the middle of the
open it, and select
Related tasks
Adjusting the gain (echo sensitivity), page 91
Adjusting the TVG (Time Variable Gain) setting, page 113
Related functions
TVG function, page 414
314
.
Apply to all
button to
Gain
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