Furuno FCV-800 - Bottom Discrimination Display

1. OPERATION
1-27
1
1.18 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. A transducer or triducer* that supports the bottom discrimina-
tion display is required.
*: See page AP-5 ‘’Transducer List’’ for further information.
There are two bottom discrimination displays: graphic and probability.
• Graphic display: The most probable material on the bottom (mud, sand, gravel,
rock) is indicated graphically.
• Probability display: The most probable bottom material is indicated in proportion.
Bottom
discrimination
display column
Probability
bar
Hardness legend
Probability bar:
Degree of trust for bottom discrimination display
(Green, Normal; Yellow, Caution;
Background color, Abnormal)
Rock Gravel Sand Mud
Hardness
legend
Bottom
discrimination
display
column
Probability
bar
Mud
Sand
Gravel
Rock
Graph example
Mud probability
(Approx. 25%)
Sand probability
(Approx. 25%)
Rock probability
(Approx. 50%)
Graph example