Simrad ER60, Operator'S Manual

Page: 65 / 182

Dialogue boxes and functions
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850-164692 / Rev.B
Colour Scale
The Colour Scale dialogue is accessed from any of the
following views: Single Target Position , Single Target
Histogram and Colour Scale .
Purpose
The purpose of this dialogue box is to change the dynamic range
of the colour scale. The total number of colours used in the
presentation will be distributed between the minimum and
maximum levels identified in this dialogue. Values above
maximum level are shown using the “max level” colour, while
values below are shown with the background colour.
20 or 40 log
When the dialogue is launched from the Single Target Position
and the Single Target Histogram views, the colour scale
represents colour mapping for the 40Log TVG function. This
TVG function is always used for target strength estimation for
single targets.
When the dialogue is launched from the Colour Scale view, the
TVG function depends on which acoustic variable is chosen for
display on the corresponding
Echogram view. This is because
the colour scale view represents the colour mapping for the
Echogram view.
The TVG functions can be either: No , 20Log , or 40Log .
Parameters
Min.level / Max.level - Use the spin boxes or sliders to set the
levels. Altering the maximum or minimum levels will
automatically adjust the colour step.