Furuno 1824C-BB Operator's Manual page 175

7. CUSTOMIZING YOUR UNIT
DEPTH LINES & SPOT SOUNDINGS DISPLAY MODES: Choose where to display depth
contours, depth data etc.
Setting Description
PLOT/OVERLAY Shows depth lines and soundings on the plotter and
overlay displays.
PLOTTER Shows depth lines and soundings on the plotter display.
OFF Turns off depth lines and soundings.
DEPTH LINES & SPOT SOUNDINGS DISP: Choose the depth range at which to show
depth lines and soundings (depth contours, depth data, etc.)
Setting
SHOW FROM
TO
ROCKS BOTTOM TYPE DEPTH DISPLAY: Choose range for rocks depth display.
Setting
SHOW FROM
TO
7-20
Setting Range
0-99999 m/ft/fa/pb
Setting Range
0-99999 m/ft/fa/pb
Default Setting
PLOT/OVERLAY
Default Setting
0 m/ft/fa/pb
1000 m/ft/fa/pb
Default Setting
0 m/ft/fa/pb
30 m/ft/fa/pb