Navman FISH 4500/4600, Installation And Operation Manual

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 Manual

10

NAVMAN