Simrad ES80 Reference Manual page 439

Keep in mind that in the basic scale with 12 colours, each discrete colour represents a
3 dB range of echo signal strength. This implies that the next colour is selected every
time the echo strength is doubled.
Tip
By default you have 64 or 12 colours available to present the echoes, and a selection of
palettes. The colour scale can be retrieved any time by selecting
bar. The chosen colours are shown at the bottom of the ES80 presentation.
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.
Details
/
Min(imum) Level Max(imum) Level
Set the lower and upper limits of the echo strength you wish the relevant colour
scale to reflect. There is one level definition for each TVG setting.
To determine how many dB the echo strength increases for each colour, take the
numerical difference between the upper and lower limits, and divide it with the
number of colours in the scale.
Apply to All Channels
Select this box to apply the current selection to all the channels on your ES80.
In this context, the phrase channel is used as a common term to identify the
combination of transceiver, transducer and operating frequency.
Return to...
Information Pane Options dialog box, page 433
Related tasks
Changing the colour scale in the ES80 presentations, page 129
Related information panes
Colour Scale information pane description, page 235
Related dialog boxes
Colour Setup dialog box, page 334
406273/C
Functions and dialog boxes
on the top
Colour Scale
437