16
Fish 4430/4431 Installation and Operation Manual
Gain setting
These echoes will be
shown in grey on the
Fish History section.
These strong echoes
will be shown in
black on the Fish
History section.
The weak echoes
within this white
section of the shad-
ing bar will not be
shown - they are
below the threshold
of where the shading
begins.
Increasing Gain by pr will
move the edge of the light grey bar
to the left and result in weaker echoes
being displayed in the Fish History
section. Pressing - will move the edge
of the grey bar to the right.
Manual Gain
When Manual Gain is selected, increasing the gain
setting will result in more detail being shown on the
fishfinder display. Decreasing the gain will reduce
detail being shown. See ‘Changing the Gain Mode’
in section 3-2 for more information on changing
Gain settings.
3-6 NAVIGATE screen
Select MAIN MENU - NAVIGATE to display the
NAVIGATE screen.
The NAVIGATE screen displays useful
information while travelling at speed. It
prominently displays the water depth, the boat
speed, the bottom profile and any alarms that
are enabled.
Depth
can be displayed in feet (FT), fathoms
(FA), or metres (M). Use the SETUP - UNITS
- DEPTH menu to select the required depth
units (see section 4-2).
Speed (F4431 ONLY)
can be displayed in knots
(KN), miles per hour (MPH), or kilometres per
hour (KPH). Use the SETUP - UNITS - SPEED
menu to select the desired speed units (see
section 4-2).
TIP
: Use the < key to immediately return to the
fish finder screens.
