How to read raw sonar screen?
When Reading sonar data output you are generally
interpreting color variations. In simple terms, the
sonar will display more dense material with darker
colors.
We have provided you with a sample screen on the
left here that shows the surface, the water body, a
small “disturbance/object” in the center of the
screen and the bottom contour.
1. Ultrasound transmission line. On the screen,
this would be considered the water surface.
2. BLUE - The color blue means that there is
nothing (no object) there to reflect sound and
therefore is a light color.
3. GREEN - All colors except blue (such as green,
yellow or red) indicate that there is something in
that space. Darker the color the more dense the
material the sonar is picking up.
4. This shows the variation of color which indicates
a variation of the density of the material being
seen. In this case it is the bottom of the water.
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