Furuno MFD8 User Handbook Manual page 19

Manual operation
Selecting a range
- Press RANGE OUT to increase the range.
OUT
RANGE
- Press RANGE IN to decrease the range.
IN
Adjusting the gain
GAIN
GainHF
TX GainLF
Rejecting clutter
MENU
Appearance
of clutter
Selecting operating frequency
Low frequency: Use for general detection and judging bottom conditions.
High frequency: Use for detailed observation.
Dual: Both high and low frequencies.
Choose Mode
soft control.
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GAIN
0 %
TX
0 %
Select
frequency.
Select Fish
Finder menu.
Clutter
27 %
Confirm
selection.
19
Adjust.
Select Clutter
on applicable
sub menu.
Adjust.
HF
LF
Select HF,
LF or Dual.
Dual
Confirm
setting.
Confirm
setting.
Confirm
selection.