Navman FISH 4100, FISH 4150 Operation Manual

FISH 4100 / 4150

Installation and

Operation Manual

English .............3

Français .........24

Español ..........46

Português ......68

www.navman.com

NAVMAN

FCC Statement

Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a normal
installation. This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an output on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced technician for help.
A shielded cable must be used when connecting a peripheral to the serial
ports.

2

NAVMAN FISH 4100 Installation and Operation Manual

Contents

1 Introduction ..................................................................................................... 4

2 Getting started ................................................................................................. 5

2-1 Simulation mode ..........................................................................................................6

3 Operation ......................................................................................................... 6

3-1 ALARMS ..................................................................................................................... 7

3-2 HISTORY screen operation .........................................................................................7

3-3 HISTORY screen interpretation ................................................................................... 8

3-4 ZOOM screen ........................................................................................................... 1 1

3-5 SONAR screen ......................................................................................................... 11

3-6 NAVIGA TE screen .................................................................................................... 1 2

3-7 DAT A screen (FISH 4150 only).................................................................................. 1 3

3-8 RANGE menu ........................................................................................................... 13

4 SETUP menu.................................................................................................. 14

4-1 ALARMS menu.......................................................................................................... 14

4-2 UNITS menu ............................................................................................................. 15

4-3 KEY BEEP ................................................................................................................ 15

4-4 FISH SYMBOL.......................................................................................................... 15

4-5 CONTRAST menu .................................................................................................... 15

4-6 LOG menu (FISH 4150 only) ..................................................................................... 16

4-7 INSTALL menu.......................................................................................................... 16

4-8 CALIBRATION menu (FISH 4150 only)..................................................................... 17

4-9 Resetting to factory defaults ...................................................................................... 17

5 Installation ..................................................................................................... 18

5-1 What comes with this NAVMAN fishfinder?............................................................... 18

5-2 Options and accessories ........................................................................................... 18

5-3 Mounting the NAVMAN fishfinder display unit............................................................ 18

5-4 Wiring connection...................................................................................................... 1 9

5-5 Connecting a FISH 4150 to other instruments ........................................................... 20

Appendix A - S pecifications ............................................................................ 21

Appendix B - Troubleshooting ........................................................................ 22

Appendix C - How to contact us ..................................................................... 91

NAVMAN fishfinders are set up with default units of feet, °F (Fahrenheit) and knot s.
Please refer to section 4-2 of this manual to change the units.

IMPORTANT

It is the owner’s sole responsibility to install and use the instrument and transducers in a manner that will
not cause accidents, personal injury or property damage. The user of this product is solely responsible for
observing safe boating practices.

NAVMAN NZ LIMITED DISCLAIMS ALL LIABILITY FOR ANY USE OF THIS PRODUCT IN A WA Y THA T
MAY CAUSE ACCIDENTS, DAMAGE OR THA T MAY VIOLATE THE LAW.

Governing Language: This statement, any instruction manuals, user guides and other information relating
to the product (Documentation) may be translated to, or has been translated from, another language
(Translation). In the event of any conflict between any Translation of the Documentation, the English
language version of the Documentation will be the official version of the Documentation.

This manual represents the FISH 4100 and the FISH 4150 as at the time of printing. Navman NZ Limited
reserves the right to make changes to specifications without notice.

Copyright © 2001 Navman NZ Limited, New Zealand, All rights reserved. NA VMAN is a registered trademark
of NAVMAN NZ Limited.

FISH 4100 Installation and Operation Manual NAVMAN

3

1 Introduction

Congratulations on choosing a NAVMAN fishfinder .
For maximum benefit, please read this manual
carefully before installation and use.

This manual describes the installation and operation
procedures for the FISH 4100 and FISH 4150. The
manual generally refers to both products as the NAVMAN
fishfinder. The product name is used only when
describing features specific to that particular fishfinder.

The NAVMAN Fishfinder

The FISH 4100 is an ultrasonic fishfinder. It provides
powerful software and a large, high-resolution screen
with a zoom facility and a choice of fish symbols. As
well as detecting fish, the FISH 4100 measures the
water depth, battery voltage and engine hours.

The FISH 4150 also measures the water temperature,
the boat speed and has two distance logs (Trip Log
and T otal Log).

An installed NAVMAN fishfinder has two p arts:

- The transducer attached to the hull.

- The display unit.
The transducer generates an ultrasonic pulse (sound
that is above the hearing range of the human ear),
which travels down towards the bottom, spreading
out into a cone shape. When the pulse meets an
object, such as a fish or the bottom, some of the
pulse is reflected back up towards the boat and is
received by the transducer. The depth of an object
can be calculated by measuring the time between
sending the pulse and receiving its echo. The
NAVMAN fishfinder will detect the bottom down to
600 feet (180 metres), depending on the clarity of
the water, and the type of transducer used.

The strength of an echo can vary for a number of
reasons. Larger fish usually return stronger echoes,
as so do fish in the middle of the cone, where the pulse
is strongest. Reasons for weak echoes include the fish
or object being in deep water or turbid water or in the
edge of the cone where the pulse is weakest. Turbid
water scatters the ultrasonic pulse and is difficult to
‘see’ through. Turbidity can be caused by air in the water
(e.g. from another boat's wake) or by mud in the water.

Important

It is vital to the performance of the fishfinder that
the transducer is installed in the best location.
Please follow the instructions in the Transducer
Installation manual very carefully.

All of the NAVMAN 4000 Series fishfinders use new
proprietary SBN Technology for sonar processing to
improve signal enhancement, bottom recognition and
noise rejection. SBN T echnology uses the latest in digital
adaptive filter algorithms to enhance all returned signals.

4

At the same time, SBN Technology uses active noise
control to reject interference, which can often be mistaken
by fishfinders for true returns. Using SBN Technology,
the NAVMAN fishfinder analyses the reflections from
each pulse, filters false returns and displays what is in
the water under the boat.

The distinctions between the four levels of shading
help the user to better interpret what is in the water
and what type of bottom is under the boat.

Assisting with navigation

The NAVMAN fishfinder can be used to find fish, to
locate features on the bottom such as reefs or wrecks
and to help recognize favourite fishing spots from
the profile of the bottom. Use the NAVMAN fishfinder
to assist navigation by following the depth contours
marked on charts.

IMPORTANT NOTE ON USE. While the NAVMAN
fishfinder can be used as an aid to navigation,
accuracy can be influenced by many factors including
the location of the transducer. It is the user’s
responsibility to ensure that the NAVMAN fishfinder
is installed and used correctly.

How to find fish

Underwater features like reefs, wrecks and rocky
outcrops attract fish. Use the NAVMAN fishfinder to
find these features, then look for fish by passing over
the feature slowly several times using the ZOOM
screen (see section 3-4). Where there is a current,
the fish will often be found downstream of the feature.

For deep-sea fishing with the FISH 4150, a rapid
change in temperature may indicate the edge of a
warm or cold current. The temperature difference can
form a barrier which the fish may not swim through.
Search for fish on either side of the barrier.

Cleaning and maintenance

The NAVMAN fishfinder should be cleaned with a
damp cloth or mild detergent. Avoid abrasive cleaners
and petrol or other solvents. Always cover or remove
a transom-mounted transducer when repainting the
hull. If painting over a through hull transducer with
antifouling paint then use only one coat of paint.
When repainting the transducer, remove previous
coats of antifouling paint by sanding it lightly.

When not in use, the NAVMAN fishfinder can either
be removed from the installation bracket and stored
in a safe, dry, cool place such as the NA VMAN carry
bag, or left on the installation bracket and securely
covered. An optional sun cover, that also prevents
key depressions when in place, is available from
NAVMAN dealers.

NAVMAN FISH 4100 Installation and Operation Manual

2 Getting started

Power and transducer connection

FISH 4100

One end of the integrated transducer / power cable
has an 8 pin LT connector plug. Push this plug into
the socket located on the rear of the display unit,
then turn the collar to lock. Make sure that the collar
is secure for a watertight connection.

FISH 4150

One end of the power cable has a black 8 pin LT
connector plug. Push this plug into the lower socket,
which has a black nut and is located on the rear of
the display unit, then turn the collar to lock. Make
sure that the collar is secure for a watertight
connection.

One end of the transducer cable has a blue 8 pin LT
connector plug. Push this plug into the upper socket,
which has a blue nut and is located on the rear of
the display unit, then turn the collar to lock. Make
sure that the collar is secure for a watertight
connection.

If the transducer is not connected, the message
“NO TRANSDUCER DETECTED. ENTER
SIMULATION MODE?” will appear . Press
switch between YES or NO. (More information on
the simulation mode can be found in the following
section). Press
the startup sequence will continue. (Note: If the
transducer was not intentionally disconnected,
turn the display unit off and refer to the section on
Troubleshooting in Appendix B, 9.)

to confirm the selection and

Names of keys:

Cursor key

key

Gain key

+

Gain key

-

Power

to

Power on

To turn the fishfinder on press .

Note: if the ignition wire is connected (see section
5-4) then the fishfinder will turn on automatically
when the boat's ignition is turned on.

A title screen briefly appears which displays basic
product information, including the software version.

The NAVMAN fishfinder then automatically displays
the screen that was last used.

Power off

To turn the fishfinder off, hold . A countdown box
appears. Continue to hold

fishfinder turns off.

Note: if the unit is wired for Auto Power (see
section 5-4) the fishfinder can only be turned off
when the boat’s ignition is turned off.

for 3 seconds until the

Language selection

T o check which language is currently selected, press

to display the MAIN MENU.

Follow these steps to change the language:

1. Power off the unit.

2. While the unit is off, hold down the

3. Keep holding down the key and power on
the unit.

4. The screen displays a list of languages.
Press the Cursor or key to highlight a
language, then press the Cursor key to
select it. The fishfinder will continue the
startup sequence.

For further information, (see section 4-7).

key.

Backlighting

Use the button to adjust the backlighting to suit
individual preferences.

Press

once, at any time, to see the backlight bar.
This is displayed at the bottom of the screen and
shows the current setting.

Press

repeatedly until the desired backlighting
level is achieved. The backlight bar will disappear 2
seconds after the last press.

Definition of Press and Hold in this manual:

· Press means to push the key for less than one
second.

· Hold means to push and hold the key down for
more than one second.

FISH 4100 Installation and Operation Manual NAVMAN

5

2-1 Simulation Mode

An internal simulator allows users to learn how to
operate the fishfinder off the water.

In Simulation mode the word “SIMULATION” flashes
on the bottom of the screen. The fishfinder generates
data so that all the main screens appear to be
operational. Any changes made to the contrast,
backlighting, alarms or the display setup are saved.

Turning Simulation on and off

FISH 4100

Note: The FISH 4100 requires the use of the
optional Through Hull adapter cable wired to a

3 Operation

MAIN MENU screen

The NAVMAN fishfinder is menu driven. Press
to display the MAIN MENU screen. The FISH 4100
MAIN MENU is shown:

Enabled alarms
(displayed on all
screens).

The FISH 4150 has an extra option: DATA.
Press

select it.
The MAIN MENU options are summarized below and

fully explained in the following sections.

to highlight an option, then press

or

HISTORY screen (see section 3-2)

Displays the echoes received over time, with the most
recent events on the right of the screen. Use this
screen when travelling to show the bottom so reefs,
wrecks and fish can be found.

ZOOM screen (see section 3-4)

This screen is split into two parts. On the right is the
Full Range Section which shows part of the
HISTORY Screen and to the left is the Zoom Section.

power supply of 12 V DC to access the Simulation
mode. Contact your nearest NAVMAN dealer .

FISH 4150

T o turn the Simulation mode on, power the fishfinder
off, disconnect the blue transducer plug at the rear
of unit, then turn the power on.

T o turn the Simulation mode off, power the fishfinder
off, reconnect the blue transducer plug at the rear of
the unit, then power the fishfinder on.

Use this screen for taking a closer look at interesting
underwater features.

SONAR screen (see section 3-5)

Displays the strength and depth of the echoes
returned from each ultrasonic pulse. The depth range
is displayed in the lower right corner. This screen is
a powerful aid, ideal for showing the bottom hardness
and the fish species.

This screen can also be used to adjust the display
shading on the HISTORY and ZOOM screens.

NAVIGA TE screen (see section 3-6)

Prominently displays the water depth as a digital
readout. The corresponding bottom trace is also
shown. These two complimentary features are
particularly useful for understanding depth trends
when travelling at speed.

The FISH 4100 and 4150 display the engine-hours
counter, boat battery voltage and enabled alarms.

The FISH 4150 also displays the boat speed.

to

DATA screen (see section 3-7)

(FISH 4150 only)

The DATA screen displays the water temperature
and water temperature history over the last 40
minutes. It also displays the boat battery voltage, log,
engine-hours counter, boat speed and water depth.

SETUP menu (see section 4)

Use this option to customize the NAVMAN fishfinder
to suit the boat and individual preferences.

RANGE menu (see section 3-8)

Use this option to select either Auto or Manual Range
and to change the selected depth range.

6

NAVMAN FISH 4100 Installation and Operation Manual

3-1 ALARMS

Alarms can be enabled to automatically detect certain
conditions, such as the water being too shallow. The
trigger settings for the alarms can be defined to suit
the boat and individual preferences.

The FISH 4100 has four alarms, TOO SHALLOW,
TOO DEEP, FISH ALARM and LOW BATTERY.

The FISH 4150 has two extra alarms, TEMP V ALUE
and TEMP RATE.

The alarm symbols and beeper cycles for all of the
alarms are shown in section 4-1. The FISH ALARM
is three short beeps, the TOO SHALLOW ALARM is
a rapid continuous beep while all others are a slower
continuous beep.

When an alarm condition is met, then:

· the beeper sounds.

· the ALARMS menu is displayed on the

screen with the activated alarm(s) flashing.

Press any key to acknowledge the alarm, stop the

3-2 HISTORY screen operation

Select MAIN MENU - HISTORY to display the
HISTORY screen.

The HISTORY screen displays the most recent
echoes on the right of the screen and the oldest
echoes on the left. These eventually disappear off
the screen.

The vertical bar on the right edge of the screen is the
zoom bar. This shows the zoom range. To adjust the
zoom range see section 3-4.

Fish symbol
with depth

Zoom bar

Bottom

Alarms

The HISTORY screen does not show a fixed distance
travelled by the boat; rather, it displays what has
passed below the boat during a certain period of time.
The actual display depends upon the boat speed and
the depth of the water.

As the boat travels through shallow water, the echoes
have less distance to travel between the objects and

Selected depth range

42.75metres (0 to 150ft)

beeping and remove the ALARMS menu. This does
not disable the alarm. The symbol will continue to
flash until the alarm condition is no longer present.

Alarms automatically re-enable

The TOO SHALLOW, TOO DEEP and LOW
BATTERY alarms automatically re-enable when the
value moves outside the alarm trigger setting.

The TEMP VALUE alarm automatically re-enables
when the temperature is more than 0.45°F (0.25°C)
above or below the alarm trigger setting.

The TEMP RATE alarm automatically re-enables
when the rate of temperature change falls below the
trigger setting by more than 0.2°F (0.1°C) per minute.

Enabling Alarms and Changing Trigger
Values

See section 4-1 for information about enabling alarms
and changing the trigger values.

the boat. This means that the HISTORY screen
display moves across the screen more quickly than
when the boat is travelling in deep water. In deep
water, the echoes take longer to travel between the
objects and the boat, producing a display that moves
across the screen more slowly.

Note 1: Different fish symbols can be selected (see
section 4-4).

Note 2: The depth of bottom can be adjusted for keel
offset (see section 4-7).

Range

Range is the depth of water displayed vertically. The
NAVMAN fishfinder has two range modes, Auto
Range and Manual Range:

· In Auto Range, the fishfinder adjusts the depth
range automatically so that the bottom is always
shown in the lower part of the screen. The use
of Auto Range is recommended.

· In Manual Range, the fishfinder shows only a
selected depth range. In areas of rapidly
changing bottom depth, such as the sea floor
around pinnacles, it can be useful to prevent
the screen from rescaling to always show the
bottom. If the bottom is deeper than the
specified depth range, it will not be shown on
the display screen.

T o change the range mode, (see section 3-8).

FISH 4100 Installation and Operation Manual NAVMAN

7

Changing the Gain Mode

Gain (sensitivity) controls the amount of detail
displayed on the screen. The NAVMAN fishfinder has
two gain modes, Auto Gain and Manual Gain:

· In Auto Gain, the gain is automatically adjusted
to compensate for water depth and clarity. The
use of Auto Gain is strongly recommended
when learning to use a fishfinder, or when
travelling at speed.

· In Manual Gain, the user can adjust the gain to
compensate for water depth and clarity. Manual
settings range from 1 to 9. High settings may
amplify normal background noise until it
appears as random pixels on the screen. The
ideal setting produces only a small number of
random pixels. Normally the best results with a
fishfinder are obtained in Manual Gain but
practice and experience are required to
understand how to adjust the gain correctly .

T o change between Auto Gain and Manual Gain, hold

or -. The Gain mode will be displayed briefly at

+

the bottom of the screen.
When in Manual Gain the gain symbol

at the top of the display, followed by the gain level.
Press + to increase the gain level or press - to
decrease the gain level.

is shown

Fish detection and display

The fish symbol option can be customized, or switched
off altogether so that the echoes are not converted to
fish symbols on the screen. Section 4-4 explains how
to do this. The differences between Fish symbol on
and off are:

Fish Symbol ON

Using NAVMAN’s SBN sonar technology
the fishfinder analyses all return signals
and eliminates most false signals and
clutter so that remaining targets are most
likely fish. Depending on the strength of the
remaining signals, they are displayed as
either small, medium or large fish symbols

- with or without depth. Whilst the SBN
processing is very sophisticated it is not
foolproof and there will be times when the
unit will not be able to differentiate between
large air bubbles, rubbish containing air,
fishing floats etc. and genuine fish returns.

Fish Symbol OFF

For experienced users this will always
provide the best information as every sonar
return signal is displayed, whether it is
surface clutter, a thermocline or a fish.

3-3 HISTORY screen interpretation

Fish Arches

In ideal conditions and with Fish Symbols turned OFF ,
a fish passing through the cone-shaped ultrasonic pulse
is displayed on the screen as a fish arch:

As the fish enters the weak edge of the sonar cone it
generates a weak return signal that turns on the first
pixel on the fishfinder screen. As the boat moves closer
to the fish the distance between the transducer and
the fish reduces and the return signal is displayed at
progressively shallower depths, producing the start
of an arch. When the fish is directly beneath the
transducer and in the middle of the beam then the

8

NAVMAN FISH 4100 Installation and Operation Manual

returned signal is even stronger so the arch becomes
thicker. As the fish passes out of the cone the reverse
happens with a progressively weaker and deeper
return.

In reality there are many reasons why fish arches
can’t be seen. For example:

· Poor transducer installation - please refer to
the Transducer Inst allation Guide.

· If the boat is anchored then fish will tend to
show on the display as horizontal lines as they
swim into and out of the transducer sonar
beam. Slow speeds in deeper water give best
fish arch returns.

· Range is important. It will be much easier to
see fish arches when using NAVMAN’ s split
screen zoom mode to concentrate on a
particular section of water rather than just
displaying everything from the surface to the
bottom. Zooming increases screen resolution
and is necessary for good fish arches.

· It is almost impossible to get fish arches in
shallow water as the transducer sonar beam is
very narrow near the surface and fish do not
stay within the beam long enough to display an
arch. Several fish in shallow water tend to
display as randomly stacked blocks of pixels.

The following picture shows the HISTORY screen
with the fish symbols turned off:

Large school of fish
Single fish
Small school of fish
Bottom

Surface clutter
Large fish

Kelp / weed
Small fish just off

the bottom
Soft bottoms such

as mud, weed and
sand show as
narrow bands at
the bottom of the
screen

Hard bottoms such
as rock or coral
show as wide
bands at the
bottom of the
screen

Strength of returned echoes

The shading indicates differences in the strength of
the returned echo from the bottom. A grey chequered
pattern indicates a strong echo and solid black
indicates a weak echo. Fish symbols are always
shown in black.

The strength of the returned echo varies with several
factors, such as:

· The size of the fish, school of fish or other
object.

· The depth of the fish or object.

· The location of the fish or object. The area
covered by the ultrasonic beam is approximately
cone-shaped and echoes are strongest in the
middle.

· The clarity of water. Particles or air in the water
reduce the strength of the returned echo.

· The composition or density of the object or
bottom. Mud, weed and sand bottoms tend to
weaken and scatter the sonar signal, which
results in weaker returns. Rock or coral
bottoms concentrate the return signal for
strong returns.

Note that planing hulls at speed produce air bubbles
and turbulent water that bombard the transducer. The
resulting ultrasonic noise may be picked up by the
transducer and obscure the real echoes.

Shadows

Shadows are areas where the ultrasonic beam
cannot ‘see’. These include hollows on the bottom
or beside rocks and ledges where the strong echo
returned off the rock obscures the weaker echo of
the fish.

When looking for small objects including fish, users
should consider that there are places where
fishfinders cannot ‘see’.

Shadow - where objects are hidden in the bottom echo.

These fish will be hidden in the bottom echo.

FISH 4100 Installation and Operation Manual NAVMAN

9

NAVMAN fishfinders display the most recent events on
the right of the screen.

Moving boat

1 minute ago

30 seconds ago

Air in water (e.g.

from wake)

Stationary boat

1 minute ago Now

Now

When the fish symbol option is
ON, any echo returned that fits
the profile of a fish is displayed
on the screen with a fish symbol.

When a boat is stationary, all bottom echoes will come from the same small
area of bottom. This will produce a flat bottom trace on the screen.

The appearance of the HISTORY and ZOOM screens

can be changed to suit individual preferences.

Note: times indicated are for illustration only.

10

NAVMAN FISH 4100 Installation and Operation Manual

Time

3-4 ZOOM screen

Select MAIN MENU - ZOOM to display the ZOOM
screen.

The ZOOM screen is split into two parts. On the right
is the full range section (just like the HISTORY
screen) and on the left is the zoom section.

Full range section
Zoom section

Zoom bar

The full range section illustrated is 42.75 m (150 ft)
and the zoom bar, located on the right edge of the
screen, shows the area that is enlarged in the zoom
section, in this case the section between 18.6 m and

27.7 m (61 ft and 91 ft).

3-5 SONAR screen

Select MAIN MENU - SONAR to display the SONAR
screen.

This is a powerful feature and with some experience,
this screen can be used to identify both the type of
bottom and the fish species.

On the Sonar Echo section on the right side, the
strength of an echo at a particular depth is shown by
a horizontal line at that depth. A strong echo produces
a long line, whereas a weak echo produces a short
line. Below the echoes the screen shows the Shading
Bar.

The left side of the screen is the Fish History section.
Using the Shading Bar as a control, the fishfinder
interprets the echoes shown on the Sonar Echo
section and uses this information to draw the Fish
History section.

Recognizing the Type of Bottom

The bottom trace is the strongest echo shown in the
lower part of the left side of the screen.

A bottom trace with a wide chequered grey layer is
indicative of a hard bottom, because a hard bottom
returns strong echoes. Conversely, a soft bottom
produces medium or weak echoes, which are shown
by a narrower trace.

FISH 4100 Installation and Operation Manual NAVMAN

The zoom section shows the area of interest (such
as fish or features close to the bottom) in greater
detail than the HISTORY screen.

Bottom Lock

The zoom bar is normally locked to the bottom
(Bottom Lock) so that the bottom is always displayed
in the zoom section, regardless of changes in depth.

T o turn Bottom Lock off, press then move the zoom
bar to the desired position with or

To turn Bottom Lock on, move the zoom bar down
until it touches the bottom and the message
“BOTTOM LOCK ON” briefly appears.

If Bottom Lock is off and the bottom rises to meet the
zoom bar, the zoom bar will temporarily track the
bottom. This condition will cease when the depth
exceeds the original depth of the zoom bar.

.

Changing the Zoom

To increase magnification (make the zoom bar
smaller), press . To decrease magnification (make
the zoom bar bigger), press .

Alternatively, the zoom bar can be adjusted in the
HISTORY screen before switching to the ZOOM screen.

Small strong echo
(e.g. fish). This
usually flashes on and
off as the ultrasonic
pulse strikes the fish.

Large strong signal
(e.g. bottom)

Shading Bar

Recognizing the Type of Fish

Different species of fish have different sizes and
shapes of swim bladders. The air in the swim bladder
reflects the ultrasonic pulse, so the strength of the
echo varies between fish species according to the
size and shape of the swim bladder. The sonar
display on the FISH 4100 / 4150 is 70 pixels wide, so
it can show 70 levels of return echo strength, which
is a powerful feature.

When fishing among a school of fish and catching
them, note the fish species and the strength of the
echo that it returns on the fishfinder on the Sonar
Echo screen. Then, the next time that particular return
on the fishfinder is seen, it is likely to be the same
fish species.

11

Adjusting the Shading Bar

The Shading Bar is displayed as a horizontal bar in
the lower half of the screen. Use the Shading Bar to
choose the strength of the echoes to be displayed in
black on the screens. Echoes that are weaker are
displayed in black.

Increase the black part of the Shading Bar by pressing

if there are too few long (strong) echoes being

displayed.
Decrease the black part of the Shading Bar by

pressing if there are too many long (strong) echoes
being displayed.

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 NA VIGATE screen

Select MAIN MENU - NAVIGATE to display the
NAVIGATE screen. The screen display is different
for the FISH 4100 and the FISH 4150.

The NAVIGATE screen displays useful information
while travelling at speed.

The FISH 4100 prominently displays the depth and
bottom. It also displays the engine-hours counter,
the battery voltage 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).

Gain setting

Increasing Gain by
pressing + will move
the black bar to the
left and result in
weaker echoes being
displayed in the Fish
History section.

The FISH 4150 prominently displays the water depth,
also the boat speed, the bottom and any alarms that
are enabled.

These strong echoes
will be shown in
chequered grey on the
Fish History screen

These medium echoes
will be shown in black
on the Fish History
section

The weak echoes within
this white section of the
shading bar will not be
shown - they are below
the threshold of where
the shading begins.

Speed is displayed
only on the FISH

4150. Speed 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).

12

NAVMAN FISH 4100 Installation and Operation Manual

3-7 DATA screen (FISH 4150 only)

Select MAIN MENU - DATA to display the DATA
screen:

Temperature

Temperature
Graph

Battery

voltage

Speed

Depth

A graph displays the surface water temperature for
the last 40 minutes and is updated every 30 seconds.
The current water temperature is displayed above
the graph and is updated every second.

Log
Engine

hours

Enabled
Alarms

3-8 RANGE menu

Select MAIN MENU - RANGE to change the manual
range and adjust the selected depth range.

The range setup box is displayed. This shows the
depth of water displayed vertically and the range
mode setting.

The temperature can be displayed in °F (Fahrenheit) or
°C (Celsius). Use the SETUP - UNITS - TEMPERA TURE
menu to select the desired temperature units (see section
4-2).

Alarms that indicate a specific temperature, or rate
of change of temperature, may be enabled (see
section 4-1).

Log. One of two distance logs can be displayed: Trip
Log or T otal Log. Both logs are retained in the fishfinder
memory when the FISH 4150 is switched off.

Use the SETUP - LOG menu to select the Trip Log
or T ot al Log (see section 4-6). The Trip Log must be
reset manually (e.g. to record total mileage during a
season, or the distance travelled on this trip). Note
that the units displayed on each Log will correspond
with the Speed.

Speed 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).

The NAVMAN fishfinder has two range modes, Auto
Range and Manual Range. The use of Auto Range
is recommended. See section 3-2 for more details.

T o change between Auto Range and Manual Range,
press

.

The Manual Range mode offers the user a choice of
pre-selected water depths. Use
the options and select a water depth.

Press

to exit.

and to display

FISH 4100 Installation and Operation Manual NAVMAN

13

4 SETUP menu

Use the SETUP menu to customize the NAVMAN
fishfinder to suit the boat and individual
preferences.

On a FISH 4100 use the SETUP menu to:

· Specify the trigger settings for the alarms (4-1).

· Choose the depth units (4-2).

· Turn the key beep on or off (4-3).

· Choose the fish
symbol (4-4).

· Adjust the
display contrast
(4-5).

· Select language
and setup keel
offset (4-7).

Select MAIN MENU ­SETUP to display the
FISH 4100 SETUP
Menu. Press or
to select an option:

4-1 ALARMS menu

Select MAIN MENU - SETUP - ALARMS to display the
available alarms. Press
or to select an option.

Alarms can be enabled to
automatically detect certain
conditions, such as the
water being too shallow.
Trigger settings can be
defined to suit the boat and
individual preferences. The
FISH 4100 ALARMS menu
is shown:

The FISH 4150 has two
extra alarms, TEMP
VALUE and TEMP RATE.

The beeper cycle is different for some alarms. All of
the alarm symbols and beeper cycles on the FISH
4100 are shown:

Symbol Alarm Beeper Alarm condition is

Name Cycle met when:
Too1/5 sec the depth is less than
Shallow the alarm trigger value
Too1/2 sec the depth is greater
Deep than the alarm trigger

value
Fish 3 short an echo matches the
Alarm beeps profile of a fish
Low1/2 sec the battery voltage is
Battery less than the alarm

trigger value

14

On a FISH 4150 use the SETUP menu to:

· Specify the trigger settings for the alarms (4-1).

· Choose the units for depth, temperature and speed
(4-2).

· Turn the key beep on or off (4-3).

· Choose the fish symbol (4-4).

· Calibrate the log, temperature and speed (4-6, 4-8).

· Select the Trip Log or
the Total Log (4-6).

· Zero the Trip Log or
zero all logs (4-6).

· Adjust the display
contrast(4-5).

· Select language, setup
keel offset and calibrate
speed and temperature
sensors (4-7, 4-8).

Select MAIN MENU - SETUP
to display the FISH 4150
SETUP Menu. Press
to select an option:

The alarm symbols and beeper cycles for the two
extra alarms on the FISH 4150 are shown:

Symbol Alarm Beeper Alarm condition is

Name Cycle met when:
Temp1/2 sec the temperature equals
Value the alarm trigger value
Temp1/2 sec the rate of change of
Rate temperature equals the

When an alarm condition is met, then:

· The beeper sounds.

· The ALARMS menu is displayed on the screen
with the activated alarm symbol(s) flashing.

Press any key to acknowledge the alarm, stop the
beeping and remove the ALARMS menu. This does
not disable the alarm. The symbol will continue to
flash until the alarm condition is no longer present.

Note: The FISH ALARM gives only three short beeps.

or

alarm trigger value

Alarms automatically re-enable

The TOO SHALLOW, TOO DEEP and LOW
BATTERY alarms automatically re-enable when the
value moves outside the alarm trigger setting.

The TEMP VALUE alarm automatically re-enables
when the temperature is more than 0.45°F (0.25°C)
above or below the alarm trigger setting.

The TEMP RATE alarm automatically re-enables
when the rate of temperature change falls below the
trigger setting by more than 0.2°F (0.1°C) per minute.

NAVMAN FISH 4100 Installation and Operation Manual

Flashing Light and/or External Beeper

(FISH 4150 only)

If a secondary alarm indicator is required, a flashing
light and/or external beeper can be installed with a
FISH 4150. These can be positioned anywhere
suitable on the boat. For installation advice see
section 5-4.

4-2 UNITS menu

Select MAIN MENU ­SETUP - UNITS to define
the depth units on a FISH

4100.
The temperature units

and speed units can also
be defined on a FISH

4150. The FISH 4150
UNITS menu is shown:

or to

Press
highlight an option.

Enabling Alarms and Changing Trigger
Values

or to highlight an alarm, then press to

Press
select it. To enable or disable an alarm, press
switch between ON and OFF.

T o set the trigger value for an Alarm, press or
increase or decrease the trigger value.

The alarm trigger value is retained even when the
alarm is disabled.

DEPTH

can be displayed in units of feet (FT), fathoms (FA),
or metres (M). Press to select the required depth
units.

TEMPERATURE

can be displayed in °F (Fahrenheit) or °C (Celsius).
Press

to select the required temperature units.

SPEED

can be displayed in knots (KN), miles per hour (MPH),
or kilometres per hour (KPH). Press to select the
required speed units.

Note: Distance units will change automatically to
match the speed units.

to

to

4-3 KEY BEEP

Select MAIN MENU - SETUP - KEY BEEP to enable
or disable a single beep that audibly confirms a
keypress.

4-4 FISH SYMBOL

Select MAIN MENU - SETUP - FISH SYMBOL to
display the fish symbol options for the screen
displays.

There are three options. Press

· OFF
.

·

·

,

to select:

4-5 CONTRAST menu

Select MAIN MENU - SETUP - CONTRAST to
display the contrast setting box and the current
setting.

The contrast level can be set at any level between
0 and 16. The default setting is 6.

FISH 4100 Installation and Operation Manual NAVMAN

Press

to select ON or OFF . The default setting is

ON.

OFF

Displays echoes directly as pixels on the screen.

Displays any echoes that match the profile of a fish
as a fish symbol. Echoes that are not recognized as
fish are displayed as pixels on the screen.

Displays any echoes that match the profile of a fish
as a fish symbol with the depth. Echoes that are not
recognised as fish are displayed as pixels on the
screen.

or to increase or decrease the setting to

Press
the required level. Then press to exit.

15

4-6 LOG menu (FISH 4150 only)

Select MAIN MENU - SETUP - LOG to display the
available options.

to select

or

Press
an option:

LOG

Selects which log is
displayed on the DATA
screen, TOT AL or TRIP.

Press

to choose
between TRIP or
TOTAL. Both logs are
retained in the NAVMAN
fishfinder but only the
selected log is
displayed.

ZERO TRIP LOG

Resetting the trip log will return the trip log value to
zero. The trip log is retained in the fishfinder memory

so it retains the distance value if the fishfinder is
switched off during a trip. Therefore, the trip log needs
to be reset manually each time the user wishes to log
a trip.

Press or to highlight ZERO TRIP LOG , then press

to select it. The message box “ZERO TRIP LOG

YES” appears.

to select YES or NO. Then press

Press
to reset the trip log and exit.

ZERO ALL LOGS

Resetting both logs will return both the trip log and
the total log values to zero.

Press or to highlight ZERO ALL LOGS, then
press to select it. The message box “ZERO ALL
LOGS YES” appears.

to select YES or NO. Then press

Press
to exit.

4-7 INSTALL menu

Use this menu at installation time, to select the
language and to enter the keel offset value for the
boat.

Select MAIN MENU - SETUP - INSTALL to display
the menu. The FISH 4100 install menu is shown. An
extra option, CALIBRATION, is available on the FISH
4150 to calibrate water temperature and boat speed.
The FISH 4100 Install Menu is shown:

to select an

or

Press
option:

LANGUAGE

The following languages
are available: English,
French, Swedish, Italian,
Spanish, Portuguese,
Dutch, German and
Finnish.

Press or to highlight
the selected language,
then press
and exit.

Use Keel Offset either when the
transducer is located below the
water surface but a display of
total water depth is required, or
when depth of water below the
boat’s keel is required.

Enter positive values to display depth as measured from a point above the transducer (e.g. Water surface).
Enter negative values to display depth as measured from a point below the transducer (e.g. keel).

16

to save

KEEL OFFSET

Keel offset is the distance between the location of
the depth transducer and the point the displayed
depth is measured from.

Enter a keel offset value when the transducer is
located below the water surface but a display of total
water depth is required, or when the depth of water
below the boat's keel is required.

or to select KEEL OFFSET, then press

Press
to display the keel offset box.

Negative values display the depth as measured from
a point below the transducer (e.g. keel). Positive
values display the depth as measured from a point
above the transducer (e.g. water surface).

Press

or to increase or decrease the value.

Water surface
Positive value

Transducer

Note: Boat illustrated uses a through hull transducer

NAVMAN FISH 4100 Installation and Operation Manual

Negative value

or

or

Depth of transducer

4-8 CALIBRA TION menu (FISH 4150 only)

Use this menu to
calibrate the water
temperature and the
boat speed.

Select MAIN MENU ­SETUP - INSTALL ­CALIBRATION to
display the calibration
menu.

Calibrating the
Temperature

The factory settings
should be sufficiently
accurate for normal usage. However to calibrate the
temperature readout, first measure the water
temperature.

Then, to calibrate the setting, select TEMPERATURE
then press to display the temperature readout box.
Press or to increase or decrease the value to
match the measured temperature.

(To change the temperature units between °F
(Fahrenheit) or °C (Celsius), use the SETUP - UNITS
menu (see section 4-2).

Calibrating the Speed

Use this to calibrate the boat's speed and log.
Calibration may be required because different hull
shapes have different flow characteristics.

Obtain an accurate measurement of the boat's speed
from a GPS receiver; by following another boat
travelling at a known speed; or by making a timed
run over a known distance.

Note that for accurate calibration:

· The speed from a GPS receiver should be
greater than 5 knots.

· The speed from another paddlewheel
transducer should be between 5 and 20 knots.

· Best results are achieved in calm conditions
where there is minimal current (best at high or
low tide).

Use

or to highlight the SPEED option, then press

to display the speed readout box. Press or to
increase or decrease the readout to match the
independent speed value.

4-9 Resetting to Factory Defaults

Important

This option resets all of the following settings and
resets them to the manufacturer’s default settings.

Settings relating to water temperature and boat
speed are for the FISH 4150 only. S peed and distance
are related. For example, if knots are chosen as the
speed units, then distance is always measured in
nautical miles.

T o reset the fishfinder to the manufacturer's default
settings, power off the fishfinder. Then hold
power on while holding it.

The message “RESET TO F ACTORY DEFAUL TS?”
appears. If “YES” is highlighted, do nothing and the
fishfinder resets to the default settings. Otherwise,
press or to select YES.

GENERAL

Auto Gain ....................................................... ON

Auto Range .................................................... ON

Manual Gain .......................................................5

Bottom Lock ................................................... ON

Key Beep ........................................................ ON

Contrast .............................................................6

Backlighting........................................................6

UNITS

Temperature..................................................... °F

Depth ........................................................... Feet

Speed .............................................................. KN

Distance ......................................................... NM

ALARMS

Shallow Alarm .............................................. OFF

Shallow Alarm Value .....................................10 ft

Deep Alarm .................................................. OFF

Deep Alarm Value .........................................60 ft

and

Fish Alarm .................................................... OFF

Temp. Change Alarm ................................... OFF

Temp. Change Alarm Value........................ 5.0 °F

Temp. Alarm ................................................. OFF

T emp. Alarm V alue...................................... 80 °F

Low Battery Alarm ........................................ OFF

Battery Alarm Value .............................. 11.5 Volts

FISH SYMBOL .......................................

INSTALL

Keel Offset ...................................................0.0 ft

FISH 4100 Installation and Operation Manual NAVMAN

17

5 Installation

Correct installation is critical to the performance of
the NAVMAN fishfinder. There are two components
to install, the display unit and the transducer. It is

vital to read the entire installation section of this
manual and the documentation that comes with the
transducer before attempting installation.

5-1 What comes with this NA VMAN fishfinder?

Standard configuration

· FISH 4100 or FISH 4150 display unit.

· Power cable (the FISH 4100 power cable
incorporates the transducer cable).

· Mounting bracket.

· Warranty registration card.

· This manual.

· Transducer.

· Transducer Installation Manual.

· Screws.

Unit

Transducer

5-2 Options and Accessories

Optional transducers

· Through hull Speed/Temperature transducer.

· Through hull Depth transducer.

· In hull Depth transducer.

Other options and accessories

· Flush mounting kit.

· Replacement paddle wheel.

· Sun cover.

· Adapter cable for through hull transducer.

· Carry bag.

· Transducer extension cable (FISH 4150 only).

Depth Repeater

Repeater for Depth, Speed, Water Temperature,
Battery Voltage (for FISH 4150 only).

Please consult your NAVMAN dealer for more
information.

Screws

Mounting
bracket

Power cable

(FISH 4150 only)

5-3 Mounting the NA VMAN Fishfinder Display Unit

Mounting the bracket

1. Select a position where the display head will be:

· at least 100 mm (4 in) away from the

compass.

· at least 300 mm (12 in) away from any

radio transmitter.

· at least 1.2 m (4 ft) away from any antenna.

· easy to read by the helmsman and crew

while underway.

· protected from physical damage during

rough sea passages.

· easy to access the 12 volt power source.

· convenient to route the transducer cables.

2. Fix the mounting bracket onto the boat using
the three stainless steel screws. Do not
overtighten the screws, as the bracket may not
rotate.

18

3. Push the display unit onto the mounting
bracket and tighten it firmly using the knob on
the mounting bracket.

4. Attach the cables.

Note: There is also an optional flush mount kit
available. Please consult your NAVMAN dealer for
details.

Removing the NAVMAN fishfinder

The NAVMAN fishfinder can be removed after each
use for protection against the environment or security
reasons.

When removing the NAVMAN fishfinder , ensure that
the plugs left in the boat are not exposed to the
elements. Push the attached dust covers over the
exposed ends of the plugs. Keep the display unit in
a dry clean place such as the optional NAVMAN
carry bag.

NAVMAN FISH 4100 Installation and Operation Manual

5-4 Wiring Connection

Warning

1 Amp fuses must be positioned where shown in
the wiring diagrams.

If possible, route the transducer cables away from
other wiring on the boat. Electrical noise from engine
wiring, bilge pumps and other electrical equipment
can affect the unit.

The shortest and most direct connection to the boat's
battery helps to minimize voltage drop. Do not lay
cable along the bilge.

Two wiring options are described in this section:

· Basic Wiring. This does not start the fishfinder
automatically when the boat ignition is
switched on and it disables the engine hours
counter.

· Auto Power Wiring. This must be used for
engine hours and fuel computer options.

Auto Power Wiring

This option is possible on both the FISH 4100 and
the FISH 4150.

Note: Green and white wires are on the FISH 4150
only.

To ignition system

Ignition
switch

Main
switch

Fuse

Fuse

External Beeper
or Light

White (NMEA out)

Yellow
Red

Green
Black

Important

The NAVMAN fishfinder must be run off a 12 volt
battery and must not be run off a circuit without a
battery.

Basic Wiring

This option is possible on both the FISH 4100 and
the FISH 4150.

Fuse

Main
switch

12 V DC

Black wire: Connect this to the negative battery
terminal.

Red Wire: Connect this to the 12 V positive battery
terminal after the main switch. Fit a 1 Amp fuse as
shown.

Yellow wire: Connect this to the black wire. This
disables the engine hours counter.

Power on the fishfinder manually whenever the main
switch is on.

Red

Yellow

Black

12 V DC

Black wire: Connect this to the negative battery
terminal.

Red Wire: Connect this to the 12 V positive battery
terminal after the main switch. Fit a 1 Amp fuse as
shown.

Y ellow Wire: T o enable the engine hours counter and
start the fishfinder automatically when the ignition is
turned on, connect the yellow wire to the ignition
system, through a 1 Amp fuse. Note that the fishfinder
cannot be turned off while the ignition is on.

Flashing Light and/or External beeper

(FISH 4150 only)

Use the green wire on the FISH 4150, if desired, to
connect a secondary alarm indicator such as a
flashing light or a 12 V external beeper with a built in
drive circuit. Refer to the wiring diagram. If the
external beeper or light requires more than 250 mA
dc total, fit a 12 V relay. Consult your NA VMAN dealer
for more advice.

NMEA Instruments (FISH 4150 only)

Use the white wire on the FISH 4150, if desired, to
connect the fishfinder to other NMEA instruments
such as the NAVMAN depth repeater. See section
5-5 for more information.

FISH 4100 Installation and Operation Manual NAVMAN

19

5-5 Connecting a FISH 4150 to other instruments

Several NAVMAN instruments can be connected
together to share data such as Depth or Speed. The
FISH 4150 fishfinder uses the NMEA protocol to
output data to other instruments.

NMEA

NMEA is an industry standard for marine instrument
communications. Data sent by one instrument over

an NMEA line can be read and displayed by another
instrument that accepts NMEA 0183 V ersion 2.
Depth, speed and temperature data is output by the
FISH 4150 and can be read and displayed by the
NAVMAN REPEA T 3100, DEPTH41, GPS
Chartplotter, or other NMEA instrument.

REPEAT 3100
Repeater for depth, speed, water temperature and

battery voltage.

Please contact your NAVMAN dealer for information on NAVMAN’s full range of NMEA enabled instruments
and connection options.

DEPTH41
Depth repeater.
Please consult your NAVMAN dealer for more

information.

20

NAVMAN FISH 4100 Installation and Operation Manual

Appendix A - Specifications

Depth range

· 0.6 m (2 ft ) to 180 m (600 ft)

Display type

· FSTN

· Screen resolution 160 high x 120 wide (pixels).

· Yellow multi-level back lighting.

Supply voltage

· 10 to 16.5 V DC.

Supply current

· 120 mA min - no backlighting.

· 180 mA max - full backlighting.

Operating temperature

· 0 to 50°C (32 to 122°F).

Transom transducer cable length

· FISH 4100 - 10 m (33 ft ).

· FISH 4150 - 8 m (26 ft).

Typical depth acquisition time from st artup

· 2 seconds at 100 feet (30.5 m).

Transducer frequency

· 200 kHz

Transducer power

· 150 Watts RMS @ 13.8 V DC (during burst).

Receiver sensitivity

· Better than 10 micro volts RMS.

· Dynamic range 4.0 million to 1 (120 dB).

Standards Compliance

· EMC: USA FCC Part 15 Class B.

Europe (CE) EN50081-1 and EN50082-1
New Zealand and Australia (C Tick)
AS-NZS 3548

· Environment: IP67

The following specifications relate to
the FISH 4150 only:

Temperature measurement range

· 0 to 37.7°C (32 to 99.9°F) Resolution 0.1 units.

Speed range

· 1 to 50 kn (57.5 mph, 96.6 kph).

Speed resolution

· 0.0 to 9.9, 10 to 50.

Communications

· NMEA 0183 (Ver 2.0) 4800 Baud.

NMEA output

NMEA (0183 format) is a standard for interfacing
marine electronic devices. The NAVMAN fishfinder
can output the following data:

· DBT (Depth Below Transducer).

· DPT (Depth and Keel offset).

· TDK (Depth NAVMAN NZ - proprietary).

· TKV (Speed NAVMAN NZ - propriet ary).

· VHW (Speed).

· MTW (Water temperature).

· XDR (Battery voltage).

126.0 mm (5")

126.0 mm (5")

143.5 mm (5.6")

FISH 4100 Installation and Operation Manual NAVMAN

27.9 mm
(1.1")

30.5 mm
(1.2")

88.5 mm (3.5")

21

Appendix B - Troubleshooting

This troubleshooting guide is written with the
assumption that the user has read and understood
the relevant sections in this manual.

It is possible in many cases to solve difficulties
without having to send the display unit back to the
manufacturer for repair. Please follow this
troubleshooting section before contacting the
nearest NAVMAN dealer .

There are no user serviceable parts. Specialized
methods and testing equipment are required to
ensure that the display unit is reassembled correctly
and is waterproof. Users who service a NAVMAN
fishfinder themselves will void the warranty.

Repairs to the NAVMAN fishfinder may only be
carried out by a service centre approved by NAVMAN
NZ. If the display unit must be sent into a service
centre for repair, it is essential to send in the
transducer(s) at the same time.

More information can be found on our Website:
www .navman.com.

1. The fishfinder won't turn on:

a) NAVMAN fishfinders are designed to operate

on 12 volt battery systems, where the voltage
may vary from 10 to 16.5 volts. If an excessive
voltage is supplied to the unit, a resettable fuse
will be tripped, turning the display unit off.

b) Check that the power cable LT connector at

the back of the display unit is securely plugged
in and the collar is locked in place. The collar
must be secure for watertight connection.

c) Measure the battery voltage while the battery is

under load - turn on some lights, radio, or other
electrical equipment connected to the battery. If
the voltage is less than 10 volts:

- the battery terminals or wiring on the

terminals may be corroded.

- the battery may not be charging correctly or

may need replacing.

d) Inspect the power cable from end to end for

damage such as cuts, breaks, or squashed
sections.

e) Ensure that the red wire is connected to the

positive battery terminal and the black wire to
the negative battery terminal. If wired for the
engine hour option, ensure the yellow wires
are connected to the ignition circuit. Also check
the boat's main switch circuit. See section 5-4.

f) Check for corrosion on the power cable LT

connector and clean or replace if required.

g) Check fuses that are placed in line with the

power cable. A fuse can be blown despite
appearing to be good, or the fuse may be

22

corroded. Test the fuse or replace it with a fuse
known to be good.

2. The fishfinder won’t turn off:

The fishfinder may have been wired with the
Engine Hours feature enabled. In this case, the
fishfinder cannot be turned off while the ignition
power is on. See Auto Power Wiring in section
5-4.

3. The fishfinder operates erratically:

a) Check that the transducer does not have debris

(e.g. weed, plastic bag) caught around it.

b) The transducer may have been damaged

during launching, running aground, or running
underway with debris etc. If the transducer has
been impacted, it may have been kicked up on
the bracket. If it is not physically damaged,
push it back down so it 'clicks' into place.

c) When in water less than 2 feet (0.6m) the

bottom and depth readings may become
inconsistent and erratic. This depth is
measured from the transducer and does not
allow for any keel offset setting.

d) Manual Gain may be set too low, which may

cause weak bottom echo, or no fish signals. If
Auto Gain is disabled try increasing the gain.

e) Ensure the back of the bottom surface of the

transducer is slightly lower than the front and
the front is as deep in the water as possible in
order to minimize the generation of bubbles
through cavitation. See the Transducer
Installation Guide for more information.

f) Check the transducer and power cable L T

connectors at the back of the display unit are
securely plugged in and the collar is locked in
place. The collar must be secure for watertight
connection.

g) Inspect the transducer and power cables from

end to end for damage such as cuts, breaks or
squashed sections.

h) Ensure there is not another fishfinder or depth

sounder turned on, which may interfere with
the NAVMAN fishfinder .

i) Electrical noise from the boat's engine or an

accessory may be interfering with the
transducer(s) and/or the NAVMAN fishfinder .
This may cause the fishfinder to automatically
decrease the gain unless using Manual Gain.
The fishfinder thus eliminates weaker signals
such as fish or even the bottom from the
display. This may be checked by switching of f
other instruments, accessories (e.g. bilge
pump) and the motor until the offending device
is located.

NAVMAN FISH 4100 Installation and Operation Manual

To stop problems from electrical noise, try:

- rerouting the power and transducer

cable(s) away from the boat’s other
electrical wiring.

- routing the unit's power cable directly to the

battery instead of through a fuse block or
ignition switch.

4. Bottom is not displayed:

a) The fishfinder may have Manual Range

selected and the depth may be outside the
range value selected. Either change the
fishfinder to Auto Range or select another
depth range - see section 3.8.

b) The depth may be outside the fishfinder’s range.

While in Auto Range, the display unit will flash
the last depth displayed, then display “--.-” to
indicate that there is no bottom detected. A
display of the bottom should reappear when it is
shallower than 180m (600ft).

5. The bottom is displayed too far up the screen:

The fishfinder may have Manual Range
selected and the selected Range value is too
high for the depth. Either change the fishfinder
to Auto Range or select another depth range ­see section 3-8.

6. Bottom echo disappears or erratic digital
reading while the boat is moving:

a) Ensure the back of the bottom surface of the

transducer is slightly lower than the front and
the front is as deep in the water as possible in
order to minimize the generation of bubbles
through cavitation. See the Transducer
Installation Guide for more information.

b) The transducer may be in turbulent water. Air

bubbles in the water disrupt the echoes
returned, interfering with the fishfinder’s ability
to find the bottom or other targets. This often
happens when the boat is reversed. The
transducer must be mounted in a smooth flow
of water in order for the fishfinder to work at all
boat speeds.

c) Electrical noise from the boat’s motor can

interfere with the fishfinder. Try some
suppression spark plugs.

7. If the fishfinder beeps when turned on but
nothing is displayed:

The fishfinder may be operating, but the
contrast settings may have been set too high
or low. Power off the fishfinder. Then hold
and press to reset the fishfinder to the
default contrast setting.

8. The wrong language is displayed:

See section 2.

9. The message "NO TRANSDUCER DETECTED.
ENTER SIMULATION MODE?" appears when you
turn the unit on:

a) Check to see that the blue transducer

connector is plugged into the top connector
(with the blue nut) on the rear of the display
unit.

b) Check the cable connectors are securely

plugged in and the blue collars are is locked in
place. The collars must be secure for water
tight connection.

c) Check that the plugs are clean and free of

water or anything that may short deteriorate the
quality of the connection. Inspect the
transducer cable from end to end for damage
such as cuts, breaks, stretched or squashed
sections.

FISH 4100 Installation and Operation Manual NAVMAN

23

Appendix C - How to contact us

NORTH AMERICA

NAVMAN USA INC.

18 Pine St. Ext.
Nashua, NH 03060.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

OCEANIA

New Zealand

Absolute Marine Ltd.
Unit B, 138 Harris Road,
East Tamaki, Auckland.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Australia

NAVMAN AUSTRALIA PTY.
Limited.
Unit 6 / 5-13 Parsons St,
Rozelle, NSW 2039, Australia.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

SOUTH AMERICA

Argentina

HERBY Marina S.A.
Costanera UNO,
Av Pte Castillo Calle 13
1425 Buenos Aires, Argentina.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Brazil

REALMARINE.
Estrada do Joa 3862,
CEP2611-020,
Barra da Tijuca, Rio de Janeiro,
Brasil.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Equinautic Com Imp Exp de
Equip Nauticos Ltda.
Av. Diario de Noticias 1997 CEP
90810-080, Bairro Cristal, Porto
Alegre - RS, Brasil.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

FISH 4100 Installation and Operation Manual NAVMAN

ASIA

China

Peaceful Marine Electronics Co. Ltd.
Hong Kong, Guangzhou,
Shanghai, Qindao, Dalian.
E210, Huang Hua Gang Ke Mao
Street, 81 Xian Lie Zhong Road,
510070 Guangzhou, China.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Website:

www.peaceful-marine.com

Malaysia

Advanced Equipment Co.
43A, Jalan Jejaka 2, Taman
Maluri, Cheras 55100,
Kuala Lumpur.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

Singapore

RIQ PTE Ltd.
81, Defu Lane 10, HAH Building,
#02-00 Singapore 539217.
Ph: [phone]
Fax: [phone]
HP: [phone]
e-mail: [e-mail]

Thailand

Thong Electronics (Thailand)
Company Ltd.
923/588 Sethakit 1 Road,
Mahachai,
Muang, Samutsakhon 74000,
Thailand.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

Vietnam

Haidang Co. Ltd.
16A/A1E, Ba thang hai St.
District 10, Hochiminh City.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Website: www.haidangvn.com

MIDDLE EAST

Lebanon and Syria

Letro, Balco Stores,
Moutran Street, Tripoli
VIA Beirut.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

United Arab Emirates

www.navman.com

Kuwait, Oman & Saudi Arabia
AMIT, opp Creak Rd.
Baniyas Road, Dubai.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

AFRICA

South Africa

Pertec (Pty) Ltd Coastal,
Division No.16 Paarden Eiland Rd.
Paarden Eiland, 7405
Postal Address: PO Box 527,
Paarden Eiland 7420
Cape Town, South Africa.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]

EUROPE

France, Belgium and
Switzerland

PLASTIMO INTERNATIONAL
15, rue Ingénieur Verrière,
BP435,
56325 Lorient Cedex.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.fr

Germany

PLASTIMO DEUTSCHLAND
15, rue Ingénieur Verrière
BP435
56325 Lorient Cedex.
Ph: [phone]

[phone]

[phone]
Fax: [phone]
e-mail:

[e-mail]

Website: www.plastimo.de

Italy

PLASTIMO ITALIA
Nuova Rade spa, Via del Pontasso 5
I-16015 CASELLA SCRIVIA (GE).
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.it

Holland

PLASTIMO HOLLAND BV.
Industrieweg 4,
2871 JE SCHOONHOVEN.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.nl

United Kingdom

PLASTIMO Mfg. UK Ltd.
School Lane - Chandlers Ford
Industrial Estate,
EASTLEIGH - HANTS S053 ADG.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.co.uk

Sweden, Denmark or Finland

PLASTIMO NORDIC AB.
Box 28 - Lundenvägen 2,
47321 HENAN.
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.se

Spain

PLASTIMO ESPAÑA, S.A.
Avenida Narcís Monturiol, 17
08339 VILASSAR DE DALT,
(Barcelona).
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
Website: www.plastimo.es

Other countries in Europe

PLASTIMO INTERNATIONAL
15, rue Ingénieur Verrière
BP435
56325 Lorient Cedex, France.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Website: www.plastimo.com

REST OF WORLD /
MANUFACTURERS

NAVMAN NZ Limited.
13-17 Kawana St. Northcote.
P.O. Box 68 155 Newton,
Auckland, New Zealand.
Ph: [phone]
Fax: [phone]
e-mail:

[e-mail]

Website:

www.navman.com

91

Made in New Zealand
MN000141 1951332B

FISHFINDER 4100 / 4150

Lon 174° 44.535'E

Lat 36° 48.404'S

NAVMAN