Filter
Top Products
Fish filter
Use this to select the minimum fish symbol size
to be displayed. There is a choice of: Small,
Medium and Large.
Digit size
Use this to remove or change the size of the depth
display on the sonar displays. There is a choice of:
Small, Medium and Large.
Fish sensitivity
Use this function to adjust the minimum fish
detection level. Select High to detect maximum
number of fish.
Depth line
This is a horizontal line that can be moved up or
down using the
or cursor keys. The depth
line can be used to find the depth of a fish or
other object shown. When in the Sonar Zoom
display, the depth line marks the centre of the
zoomed area.
If selected, it appears on all the sonar dis-
plays.
Color bar
This shows the range of colors used for the
selected color palette.
If selected, it is displayed down the left hand side
of all the sonar displays.
Zoom bar
This shows the vertical range that is enlarged in
the Zoom section.
If selected it appears as a vertical scroll bar
displayed on the right hand side of all the sonar
displays.
Palette
Use this to select a color palette. Each color
within the palette represents a different echo
strength, as shown on the sonar displays
There is a choice of five color palettes: Black, Blue,
White, Vivid and 8 color. The first four display
more detail, whilst the 8 color palette shows a
greater distinction of signal strength between each
adjacent color. For the 16 color palette, each color
covers 1.5 dB signal range. For the 8 color palette,
each color covers 3 dB signal range.
Interference filter
This filters the echo signal to reduce high-level,
spiky interference, such as engine noise.
Select to add filter.
Pulse length
This can be used to specify the length of the
transmitted ultrasonic pulse. A short pulse length
improves the display detail but contains less
energy, therefore it does not penetrate as deeply
into the water as a longer pulse.
There is a choice of Auto, Short, Medium or
Long. The Auto setting is recommended.
Pulse power
This can be used to specify the power output of
the transmitted ultrasonic pulse. Low power output
conserves the boat’s battery and produces a clear
display in shallow water.
There is a choice of Auto, Low, Medium or
High. The Auto setting is recommended.
3-3 Setup > Fuel
These features can be used only when the optional
single or twin engine fuel kit has been installed.
Press MENU once or more until the Setup menu
is displayed, then select Fuel:
It is recommended that the fuel tank capacity is
measured by draining the fuel tank, then filling
it to capacity. After filling, note the reading from
the fuel dispenser’s gauge.
Note: Beware of air pockets, especially in
underfloor tanks.
Warning
Navman fuel kits are only suitable for petrol/
gasoline engines. Fuel consumption can change
drastically depending upon the boat loading
and the sea conditions. Always carry adequate
fuel for the journey, plus a reserve.
Tank full
Select Tank full each time the fuel tank(s)
are completely refilled. When asked Are
you sure? select Yes. Otherwise, the read-
ing on the Fuel display (see section 5-6 Fuel
Display) and the Low Fuel Alarm (see section
3 -5 Setup > Alarms) are meaningless.
FISH 4500/4600 Installation and Operation Manual10
NAVMAN