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.
Surface
noise
Color bar
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
Bottom
49.6
m
Typical display
Strong
LIGHT-BLUE
DEEP BLUE
Weak
No signal
1/1
LF
0
0
0.0
20
40
60
80
R-BRN
RED
ORANGE
YELLOW
GREEN
BLUE
49.6
m
Color bar
Zero line
Fish school