Operator's Manual

7. FISH FINDER
7-7
7.2.5 Bottom Discrimination Display
The bottom discrimination display, available with the Bottom Discrimination Sounder
BBDS1 and appropriate transducer, identifies probable bottom composition. The dis-
play is available in all screen divisions, single or dual frequency mode and occupies
the bottom 1/6 of the screen in the full screen display. There are two types of bottom
discrimination displays: standard and probability. The standard display shows the
most probable bottom composition by graphic or four colors. The probability display
shows the most probable bottom composition in graph form.
Rocks
Gravel
Sand
Bottom discrimination display,
standard mode, four colors
Bottom
discrimination
display
Bottom
discrimination
window
(four colors)
Mud
Rocks
Gravel
Sand
Bottom discrimination display,
standard mode, graphic
Mud and rocks are the most likely bottom type in this example.
Bottom
discrimination
display
Bottom
discrimination
window
(graphic)
Mud