10.15 Interpreting The Sounder Display - Furuno GP-7000F Operator's Manual

10. VIDEO SOUNDER OPERATION

10.15 Interpreting the Sounder Display

This section provides, using typical examples, information necessary for
interpreting the display.
Color bar
The color bar shows the relation between echo intensity and echo color on the
screen. The top color (reddish brown) is the strongest color and the lower colors
the weakest. The bar can be used as a reference to estimate density of a fish
school, fish species and hardness of the bottom.
10-24
Surface
noise
Color bar
Bottom
49.6
Strong
Weak
No signal
1/1
LF
0
0
0.0
20
40
60
m
80
Typical display
R-BRN
RED
ORANGE
YELLOW
GREEN
LIGHT-BLUE
BLUE
DEEP BLUE
49.6
m
Color bar
Zero line
Fish school