Bottom Discrimination Display - Furuno FCV-1900 Operator's Manual

1. OPERATION
1.25

Bottom Discrimination Display

The bottom discrimination display analyzes the bottom echo to categorize bottom
hardness in one of four types (rocks, gravel, sand, mud) and shows the results in a
colorful graphic display. This function requires Bottom Discrimination Sounder
BBDS1.
There are three bottom discrimination displays: graphic, four colors, and probability.
• Graphic display: The most probable bottom material (mud, sand, gravel, rock) is
indicated graphically.
• Four colors display: The most probable bottom material (mud, sand, gravel, rock)
is indicated with four colors.
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Hardness legend
Mud
Gravel
Probability bar:
Degree of trust for bottom discrimination display
(Green, Normal; Yellow, Caution; Background
color, Abnormal)
Hardness legend
Mud
Gravel
Probability bar
Bottom
discrimination
display column
Sand
Rock
Probability bar
Bottom
discrimination
display column
Sand
Rock