Furuno TruEcho CHIRP FCV-600 Manual page 9

Color Expand mode works fine in
combination with new
schemes.
In this example, Sunlight color is
assigned. Similar to the cases of
GP-1871F/1971F and TZT9F/12F/
16F/19F, fish targets around the
seabed and fish reefs can be easily
found on the screen.
Color Expand mode is shown in
Yellow color scheme. While strong
echoes are shown in graduated
colors between yellow and green,
the difference between the seabed,
fish reefs, and fish targets are easily
identified.
Note:
This color presentation is available in the Manual Gain mode only.
In deep waters, where echoes are weaker than shallow areas, Color Expand mode may show hard targets such as
seabed and a big school of fish in light colors: Targets at the surface to middle layer, which has weaker echoes, will be
shown in lighter colors and may not be intuitively identified as fish targets. In such cases, turn off Color Expand mode
to show in the conventional presentation mode.
The following example shows the echo presentation at deeper water than the comparison shots above.
Transducer : TM165HW
Depth : 100 m
color
Note and Tips – Appropriate Occasions of Color Expand
Color Expand: ON
Color: Sunlight
Color Expand: ON
Color: Yellow
Color Expand: OFF
Color: Sunlight
Color Expand: OFF
Color: Yellow
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