FISH 4430 / 4431
FISHFINDERS
Installation and
Operation Manual
www.navman.com
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.
Contents
1 Introdu ction .......................................................................................................................................... 6
2 Gettin g started ......................................................................................................................................7
2-1 Simulation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Operati on ..............................................................................................................................................8
3-1 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3-2 HISTORY screen operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3-3 HISTORY screen interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3-4 ZOOM screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3-5 SONAR screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3-6 NAVIGATE screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3-7 DATA screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3-8 RANGE menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 SETUP menu ......................................................................................................................................... 18
4-1 ALARMS menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4-2 UNITS menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4-3 FISH SYMBOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4-4 CONTRAST menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4-5 ZOOM SPLIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4-6 LOG menu (FISH 4431 ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4-7 INSTALL menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4-8 CALIBRATION menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4-9 Resetting to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 Instal lation .......................................................................................................................................... 24
5-1 What comes with the FISH 4430/4431? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5-2 Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5-3 Mounting the FISH 4430/4431 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5-4 Wiring Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5-5 Connecting a FISH 4430/4431 to other instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Append ix A - Specifica tions ..................................................................................................................... 28
Append ix B - Trouble shooting ................................................................................................................. 29
Append ix c - How to contact us ................................................................................................................ 31
4
Fish 4430/4431 Installation and Operation Manual
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 LIABILIT Y FOR ANY USE OF THIS PRODUCT IN A WAY
THAT MAY CAUSE ACCIDENTS, DAMAGE OR THAT MAY VIOLATE THE LAW.
Governing Language: This statement, any instruction manuals, user guides and other
information relating to the produc t (Documentation) may be translated to, or has been
translated from, another language (Translation). In the event of any conflict bet ween any
Translation of the Documentation, the English language version of the Documentation will be
the off icial version of the Documentation.
This manual represents the FISH 4430/4431 as at the time of printing. Navman NZ Limited reserves
the right to make changes to specifications without notice.
Copyright © 20 05 Navman NZ Limited, New Zealand, all rights reserved. NAVMAN is a
registered trademark of Navman NZ Limited.
NAVMAN fishf inders are set up with default units of feet, °F (Fahrenheit) and knots.
Please refer to section 4-2 of this manual to change the units.
Fish 4430/4431 Installation and Operation Manual
5
1 Introduction
Congratulations on choosing a NAVMAN
fishfinder. For maximum benef it, please read
this manual carefully before installation and
use.
This manual describes the installation and
operation procedures for the FISH 4430/4431.
The NAVMAN Fishf inder
The FISH 4430/4431 is an ultrasonic fishfinder
with four levels of greyscale. 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
4430/4431 measures the water depth, battery
voltage, engine hours and water temperature.
The Fish 4431 also measures boat speed and
has two distance logs ( Trip Log and Total Log).
An installed FISH 4430/4431 has two par ts:
- 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 FISH 4430/4431 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, and 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, 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
proprietary SBN Technology for sonar processing to
improve signal enhancement, bottom recognition
and noise rejection. SBN Technology uses
the latest in digital adaptive filter algorithms
to enhance all returned signals. At the same
time, SBN Technology uses active noise control
to reject interference, which can of ten be
mistaken by fishfinders for true returns. Using
SBN Technology, the FISH 4430/4 431 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 FISH 4430/4431 can be used to f ind fish,
to locate features on the bottom such as reefs
or wrecks, and to help recognise 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 any fishfinder
can be used as an aid to navigation, accuracy
can be inf luenced by many factors including
the location of the transducer. It is the
user’s responsibility to ensure that the FISH
4430/4431 is installed and used correc tly.
How to find fish
Underwater features like reefs, wrecks and ro cky
outcrops at tract fish. Use the FISH 4430/4431
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.
6
Fish 4430/4431 Installation and Operation Manual
For deep-sea fishing with the FISH 4430/4431,
a rapid change in temperature may indicate
the edge of a warm or cold current. The
temperature difference can form a barrier, and
the fish may not swim through this. Search for
fish on either side of the barrier.
Cleaning and maintenance
The FISH 4430/4431 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
2 Getting started
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 FISH 4430/4431 can either
be removed from the installation bracket and
stored in a safe, dry, cool place such as the
NAVMAN carry bag, or left on the installation
bracket and securely covered with the optional
sun cover.
Power and transducer connection
FISH 4430
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 4431
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
to switch between YES, NEVER or NO. (More
information on the simulation mode can be
found in the following section). Press to
confirm the selec tion and 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.)
Names of keys:
Cursor key
key
+ gain key
- gain key
Power key
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.
Power on
To turn the fishfinder on press .
Note: if the unit is wired for Auto Power (see sec-
tion 5-4) the fishfinder will turn on automatically
when the boat’s ignition is turned on.
A title screen brief ly appears which displays
basic product information, including the
software version.
The FISH 4430 /4431 then automatically displays
the screen that was last used.
Fish 4430/4431 Installation and Operation Manual
7
Power off
To turn the fishfinder off, hold . A countdown
box appears. Continue to hold for three
seconds until the fishfinder turns off.
Note: If the unit is wired for Auto Power (see
section 5-4) the fishf inder can only be turned
off when the boat ’s ignition is turned of f.
Language selection
To 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
key.
3. Keep holding down the
power on the unit.
key and
2-1 Simulation Mode
An internal simulator allows users to learn how
to operate the fishfinder off the water.
In Simulation mode the word “SIMUL ATION”
flashes on the bottom of the screen. The
fishfinder generates data so that all the main
screens appear to be operational. Any changes
3 Operation
4. The screen displays a list of languages.
Press the Cursor
a language, then press the Cursor key
to select it. The fishfinder will continue
the startup sequence.
(For fur ther information, see section 4-8).
or key to highlight
Backlighting
Use the button to adjust the backlighting to
suit individual preferences.
once, at any time, to see the backlight
Press
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 two seconds after the last
press.
made to the contrast, back lighting, alarms or
the display setup are saved.
To turn the Simulation mode ON or OFF, press
SETUP highlight SIMULATE .
MAIN MENU screen
NAVMAN fishf inders are menu driven. Press
to display the MAIN MENU screen.
Press
or to
highlight an option,
then press to
select it.
The MAIN MENU
options are
summarized below
and fully explained
in the following
sections.
8
HISTORY screen (see sec tion 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 t wo parts. On the right
is the Full Range Section which shows part of
the HISTORY Screen and to the left is the Zoom
Section. Use this screen for taking a closer look
at interesting underwater features.
Fish 4430/4431 Installation and Operation Manual
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 power ful 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.
NAVIGATE screen (see section 3- 6)
Prominently displays the water depth as a
digital readout. The corresponding bot tom
trace is also shown. These two complimentar y
features are particularly useful for
understanding depth trends when travelling
at speed.
3-1 Alarms
It also displays the boat speed and the enabled
alarms.
DATA screen (see sec tion 3-7)
The DATA screen displays the water
temperature and water temperature histor y
over the last 40 minutes. It also displays the
boat battery voltage, log, engine-hours
counter, boat speed, water depth and enabled
alarms.
SETUP menu (see section 4)
Use this option to customise the FISH
4430/4431 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.
Alarms can be enabled to automatically detect
certain conditions, such as the water b eing
too shallow. The trigger settings for the alarms
can be def ined to suit the boat and individual
preferences.
The fishfinder has six alarms, TOO SHALLOW,
TOO DEEP, FISH ALARM, TEMP VALUE, TEMP
RATE and LOW BATTERY.
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 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.
Fish 4430/4431 Installation and Operation Manual
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.
9
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 cer tain 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 objec ts and 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 4-3).
Note 2: The depth of bottom can be adjusted for keel
offset (see section 4-7).
Selected depth range (0 to 150’)
Range
Range is the depth of water displayed ver tically.
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.
To change the range mode, (see section 3-8).
Changing the Gain Mode
Gain (sensitivity) controls the amount of detail
displayed on the screen. The 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 f ishfinder are
obtained in Manual Gain but prac tice and
experience are required to understand how
to adjust the gain correctly.
To change between Auto Gain and Manual
Gain, hold
displayed briefly at the bottom of the screen.
When in Manual Gain the gain symbol
shown at the top of the display, followed by the
gain level. Press + to increase the gain level or
press - to decrease the gain level.
+ or -. The Gain mode will be
is
10
Fish 4430/4431 Installation and Operation Manual
Fish detec tion 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 symbols on and off are:
Fish symbols 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
3-3 HISTORY screen i nterpretation
or large fish symbols with or without
depth. Whilst the SBN processing is very
sophisticated it is not foolproof and
there will b e times when the unit will
not be able to differentiate bet ween
large air bubbles, rubbish containing
air, fishing floats etc and genuine fish
returns.
Fish symbols 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.
Fish Arches
In ideal conditions and with Fish sym bols t urned
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 f irst pixel on the fishfinder
screen. As the boat moves closer to the f ish
the distance between the transducer and the
fish reduces and the return signal is displayed
at progressively shallower depths, producing
the star t of an arch. When the fish is direc tly
beneath the transducer and in the middle of
Fish 4430/4431 Installation and Operation Manual
the beam then the 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 f ish
arches can’t be seen. For example :
· Poor transducer installation - please refer to
the Transducer Installation Guide.
· If the boat is anchored then f ish 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 ver y 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.
11
The following picture shows the HISTORY
screen with the fish s ymbols turned of f:
Single fish
Large school
of fish
Small school
of fish
Bottom
Strength of returned echoes
The shading indicates differences in the
strength of the returned echo from the bottom.
A black pat tern indicates a strong echo, and
light grey 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 f ish, 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.
Large fish
Kelp / weed
Hard bottoms such
as rock or coral show
as wide bands at the
bottom of the screen
12
Soft bottoms such as
mud, weed and sand
show as narrow bands at
the bottom of the screen
Fish 4430/4431 Installation and Operation Manual
Shadows
Shadows are areas where the ultrasonic beam cannot ‘see’. These
include hollows on the bottom or b eside rocks and ledges where the
strong echo returne d 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 fishf inders cannot ‘see’.
Shadow - where objects are hidden in the bot tom echo.
These fish will be hidden in the bottom echo.
NAVMAN fishfinders display the most recent events on the right of the screen.
Moving boat
1 minute ago
Air in water
(e.g. from
wake)
30 seconds ago
Now
Fish 4430/4431 Installation and Operation Manual
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.
13
Stationary boat
1 minute ago Now
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.
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 zoom section shows the area of interest
(such as fish or features close to the bot tom) 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.
To turn Bottom Lock off, press
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 bot tom 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
The full range section illustrated is 150 feet and
the zoom bar, located on the right edge of the
screen, shows the area that is enlarged in the
zoom sec tion, in this case the section between
50 ft and 100 ft.
To increase magnification (make the zoom bar
smaller), press . To decrease magnif ication
(make the zoom bar bigger), press .
Alternatively, the zoom bar can be adjusted in
the HISTORY screen before switching to ZOOM.
Time
then move the
14
Fish 4430/4431 Installation and Operation Manual
3-5 SONAR scree n
Select MAIN MENU - SONAR to display the
SONAR screen.
This is a powerful feature and with some
experience, this screen can be used to identif y
both the type of bot tom 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. This
disappears from view after a few seconds, but
just press
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.
to re-display it.
Recognis ing 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 black 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.
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)
Recognising 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 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 f ish 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 par ticular return on the
fishfinder is seen, it is likely to be the same f ish
species.
Adjusting the Shading Bar
The Shading Bar is displayed as a horizontal
bar in the lower half of the screen. Adjust the
Shading Bar so different strength echoes have
a different shade on the screen. Weaker echoes
can be shown as light grey, and the strongest
echoes shown as black.
Increase the black par t of the Shading Bar by
pressing
echoes being displayed in black.
Decrease the black part of the Shading Bar by
pressing
echoes being displayed.
if there are too few long (strong)
if there are too many long (strong)
Shading Bar
Fish 4430/4431 Installation and Operation Manual
15
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
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 shading bar will not be
shown - they are
below the threshold
of where the shading
begins.
Increasing Gain by pressing + 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.
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.
16
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.
Fish 4430/4431 Installation and Operation Manual
3-7 DATA screen
Select MAIN MENU - DATA to display the DATA
screen:
Temperature
Temperature
Battery
Engine hours
Speed
Enabled
Depth
A graph displays the surface water temperature
for the last 4 0 minutes and is updated every
30 seconds. The current water temperature
is displayed above the graph and is updated
every second.
TIP: Use the < key to immediately return to the fish finder screens.
The temperature can be displayed in ° F
(Fahrenheit) or °C (Celsius). Use the SETUP
- UNITS - TEMPERATURE 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 sec tion 4-1).
Graph
Log (F4431 ONLY) One of two distance
Log
logs can be displayed : Trip Log or Total Log.
Both logs are retained in the FISH 4430/4431
memory when the unit is switched off.
Use the SETUP - LOG menu to select the Trip
Log or Total Log (see section 4-6). The Trip
Log must be reset manually (e.g. to record
alarms
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 (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).
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.
NAVMAN fishf inders has two range modes,
Auto Range and Manual Range. The use of Auto
Range is recommended. See sec tion 3-2 for
more details.
To change between Auto Range and Manual
Range, press
The Manual Range mode offers the user a
choice of pre -selected water depths. Use
and to display the options and select a water
depth.
Press
to exit.
.
Fish 4430/4431 Installation and Operation Manual
17
4 SETUP menu
Select MAIN MENU - SETUP to display the
SETUP menu:
Use the SETUP menu to customize settings to
suit the boat and individual preferences, as
follows:
· Specify the trigger settings for the alarms
(see sec tion 4-1).
· Choose the units for depth,
temperature, speed and fuel (see
section 4-2).
· Turn the key b eep on or off.
· Choose the fish symbol (see sec tion
4-3).
· Choose the contrast level (see section
4-4).
· Turn Simulation mode on or off
· Turn Zoom Split on or of f (see section
4-5)
· Select the Trip Log or the Total Log (see
section 4-6).
· Zero Trip Log or zero all logs (see
section 4-6).
· Select language, setup the keel of fset
(see sec tion 4-7).
· Calibrate speed and temperature
sensors (see section 4-7).
Press
the following sections.
to highlight an option, then see
or
18
Fish 4430/4431 Installation and Operation Manual
4-1 ALARMS menu
Select MAIN MENU - SETUP - AL ARMS to di splay
the available alarms. Press or to highlight
an option.
Alarms can
be enabled to
automatically
detect cer tain
conditions, such
as the water being
too shallow. Trigger
settings can be
defined to suit the
boat and individual
preferences.
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.
The beeper cycle is different for some alarms.
All of the alarm symbols and beeper cycles are
shown:
Symbol Alarm Beeper Alarm co ndition is
Name Cycle met when:
Temp 1/2 sec the tempe rature equ als
Value the alar m trigger v alue
1
Temp
Rate temperature equals the
alarm trigg er value
Too 1/5 sec the dept h is less than
Sh all ow the a la rm t ri gg er v al ue
Too 1/2 sec the depth i s greater
Deep than the alarm trigger
val ue
Fish 3 short an echo ma tches the
Alarm beeps profi le of a fish
Low 1/2 sec the batt ery volta ge is
Battery less than the alarm
trigger value
/2 sec the rate of c hange of
Note: The FISH ALARM gives only three short
beeps.
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.
Fish 4430/4431 Installation and Operation Manual
19
Flashing Light and/or External Beeper
If a secondary alarm indicator is required, a
flashing light and/or external beeper can be
installed. These can be positioned any where
suitable on the boat. For installation advice see
section 5-4.
4-2 UNITS menu
Enabling Alarms and Changing
Trigger Values
Press or to highlight an alarm, then press
to select it. To enable or disable an Alarm, press
to switch between ON and OFF.
To set the trigger value for an Alarm, press
to increase or decrease the trigger value.
The alarm trigger value is retained even when
the alarm is disabled.
or
Select MAIN MENU - SETUP - UNITS to define
the units for depth, temperature, speed and
fuel.
Press or to
highlight an option.
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 k ilometres per hour (KPH). Press to
select the required speed units.
Note: Distance units will change automatically to
match the speed units.
20
Fish 4430/4431 Installation and Operation Manual
4-3 FISH SYMBOL
Select MAIN MENU - SETUP - FISH SYMBOL to
display the fish symbol options for the screen
displays.
There are three options. Press
· OFF
·
·
OFF
Displays echoes as dot s on the screen.
Displays any echoes returned that match the
profile of a fish as a f ish symbol in one of three
sizes:
Strongest echo
Average echo
Wea kest e cho
to select:
Echoes which are not recognised as fish are
displayed as dots on the screen.
Displays any echoes returned that match the
profile of a fish as a f ish symbol in one of three
sizes as above. The depth of the fish is shown
to the left of the symbol. Echoes which are not
recognised as fish are displayed as dots on the
screen.
Use the FISH FILTER setting to adjust the fish
detection. (see section 4-9)
4-4 CONTRAST menu
Select MAIN MENU - SETUP - CONTRAST to display the contrast setting
box and the current set ting.
The contrast level can be set at any level between 0 and 16. The default
setting is 6.
Press
or to increase or decrease the setting to the required level.
Then press to exit.
4-5 ZOOM SPLIT
Select OFF to obtain a zoom only screen. (full screen zoom)
Select ON to obtain a split zoom / history screen (default)
Fish 4430/4431 Installation and Operation Manual
21
4-6 LOG menu (FISH 4431 ONLY)
Select MAIN MENU - SETUP - LOG to display the
available options.
Press
highlight an option:
or
to
LOG
Selects which log
is displayed on the
DATA screen, TOTAL
or TRIP.
to choose
Press
between TRIP
or TOTAL. Both
logs are retained
in the NAVMAN
fishfinder but only
the selected log is
displayed.
4-7 INSTALL menu
Use this menu at installation time, to select the
language and to enter the keel offset value, the
number of engines and the fuel tank size. The
INSTALL menu can also be used to calibrate the
water temperature and boat speed.
Select MAIN MENU - SETUP - INSTALL to display
the menu.
Press or
highlight an option.
to
LANGUAGE
The following
languages are
available: English,
French, Ge rman ,
Spanish, Italian,
Dutch, Swedish,
Por tuguese , Finnish
and Greek.
Press
or to
highlight the
selected language,
then press to
save and exit.
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 tim e
the user wishes to log a trip.
Press
or to highlight ZERO TRIP LOG, then
to select it. The message box “ZERO
press
TRIP LOG YES” appears.
Press
to select YES or NO. Then press or
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.
Press
to select YES or NO. Then press
or
to exit.
KEEL OFFSET
Keel offset is the distance bet ween the location
of the depth transducer and the point the
displayed depth is measured from.
Enter a keel of fset 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.
Press
or to select KEEL OFFSET, then 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.
22
Fish 4430/4431 Installation and Operation Manual
Use Keel Of fset either
when the transducer is
located below the water
surface but a display
of total water depth is
required, or when depth
Tran sduc er
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 su rface).
Enter negative values to display depth as measured from a point below the transducer (e.g. keel) .
Note: Boat illustrated uses a through hull transducer
Water sur face
Positive value
Depth of t ransduc er
Negative value
4-8 CALIBRATION menu
Use this
menu to
calibrate water
temperature
boat speed, fuel
readings and
the fuel f low
filter.
Select MAIN
MENU - SETUP
- INSTALL
- CALIBRATION
to display the
calibration
menu.
Calibrating the Temperature
The factory settings should be suffi ciently
accurate for normal usage. However, to calibrate the temperature readout, fi rst measure
the water temperature.
Then, to calibrate the setting, select
TEMPERATURE then press
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 sec tion 4-2).
to display the
Calibrating the Fish Filter
Use this to adjust the fish detection when
FISH SYMBOLS are switched on. Fish detection
depends on water clarity, fish species and fish
size. Calibration may be required if too little
or too much fish are being detected. Select
more fish symbols to increase the number of
detected fish. Select less fish symbols to reduce
the fish detection.
Calibrating the Speed (F4431 ONLY)
Use this to calibrate the boat’s speed and log.
Calibration may be required because dif ferent
hull shapes have different flow characteristics.
Obtain an accurate measurement of the
boat’s speed from a GPS receiver; by following
another boat traveling 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.
Fish 4430/4431 Installation and Operation Manual
23
4-9 Resetting to Factor y Defaults
Important:
This option resets all of the following settings
and resets them to the manufacturer’s default
settings.
Speed and distance are related. For example,
if knots are chosen as the speed units, then
distance is always measured in nautical miles.
To reset the fishfinder to the manufacturer’s
default settings, power of f the fishfinder. Then
hold
and power on while holding it.
The message “RESE T TO FACTORY DEFAULTS?”
appears. Press
or to reset the trip log and exit.
to select YES or NO. Then press
GENERAL
Auto Gain ...................................................... ON
Auto Range ................................................... ON
Manual Gain ...................................................... 5
Bottom Lock .................................................. ON
Key Beep ........................................................ ON
Contrast ............................................................. 6
Backlighting .................................................... 10
5 Installation
Correct installation is critical to the
performance of the FISH 4430/4431. There are
two components to install, the display unit
and the transducer. It is vital to read the entire
UNITS
Temperature .....................................................°F
Depth ............................................................ Feet
Speed .............................................................. KN
ALARMS
Shallow Alarm ............................................. OFF
Shallow Alarm Value ................................. 10 ft
Deep Alarm .................................................. OFF
Deep Alarm Value ............................ ......... 60 ft
Fish Alarm ..................................................... OFF
Temp. Change Alarm ................................. OFF
Temp. Change Alarm Value ................... 5.0 °F
Temp. Alarm ................................................. OFF
Temp. Alarm Value ................................... 80 °F
Low Battery Alarm ..................................... OFF
Battery Alarm Value ......................... 11.5 Volts
FISH SYMBOL .......................................
INSTALL
Keel Offset ................................................. 0.0 ft
Fish Filter ..............................................
installation section of this manual and the
documentation that comes with the transducer
before attempting installation.
5-1 What comes with the FISH 4430/4431?
Standard configuration
· FISH 4430/4431 display unit.
· Power cable.
· Mounting bracket (screws included).
· Warranty registration card.
· This manual.
· Transducer (includes cable k it and screws).
· Transducer Installation Manual.
· Screws.
24
Unit
Screws
Tra nsd uce r
Fish 4430/4431 Installation and Operation Manual
Mounting
bracket
FISH 4431
Power cable
5-2 Options and Accessories
Optional transducers
· Through hull Speed/ Temperature
transducer.
· Through hull Depth transducer.
· In hull Depth transducer.
Other options and accessories
· Replacement paddle wheel.
· Adapter cable for through hull transducer.
· Carry bag.
5-3 Mounting the FISH 4430/4431 Display Unit
There are t wo mounting arrangements:
· Flush mounting requires a solid panel
with access behind for wiring and
mounting screws.
· Bracket mounting requires a panel for
mounting the bracket. The bracket can
be rotated and tilted.
Select a position where the display head will be:
· At least 4” (100 mm) away from the
compass.
· At least 12” (300 mm) away from any
radio transmitter.
· At least 4’ (1.2 m) 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.
Bracket mounting
1. Fix the mounting bracket onto the boat
using the three stainless steel screws. Do
not overtighten as the bracket may not
rotate.
· Transducer extension cable.
· Sun cover.
Depth Repeater
Repeater for Depth, Speed, Water Temperature,
Batter y Voltage (see section 5-5).
Please consult your NAVMAN dealer for more
information.
2. Push the display unit onto the mounting
bracket and tighten it firmly using the knob
on the mounting bracket.
3. Attach the cables.
Removing the FISH 4430/4431
The FISH 4430/4431 can be removed after each
use for protection against the environment or
security reasons.
When removing the FISH 4 430/4431 ensure
that the plugs left in the boat are not exposed
to the elements. Push the at tached 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.
Flush mounting
1. Cut a hole in the bulkhead for the
display unit using the flush mount
template.
2. Drill four holes for the mounting studs
using the flush mount template.
3. Screw the four studs into the brass
inserts in the back of the display unit.
4. Sit the display unit in place and fit the
washers and nuts to the studs.
Fish 4430/4431 Installation and Operation Manual
25
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 shor test and most direct connection to the
boat’s battery helps to minimise voltage drop.
Ensure that any cable connections do not lay
in 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.
Important
The FISH 4430/4431 must be run off a 12
volt battery and must not be run off a circuit
without a battery.
Basic Wiring
1A Fu se
Main
switch
12 V DC
Black wire: Connect this to the negative
battery terminal.
Red wire: Connect this to the 12 V positive
batter y 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 f ishfinder manually whenever the
main switch is on.
Red
Yel low
Black
Auto Power Wiring
To ignitio n
system
Ignition
switch
Main
switch
Black wire: Connect this to the negative
battery terminal.
Red wire: Connect this to the 12 V positive
batter y terminal after the main switch. Fit a 1
Amp fuse as shown.
Yel low w ire : To 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.
1A fuse
1A fuse
External
Beeper or
Light
12 V DC
White
(NMEA out)
Yel low
Red
Green
Black
Flashing Light and/or External beeper
(F4431 ONLY)
Use the green wire, if desired, to connect a
secondar y 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
NAVMAN dealer for more advice.
NMEA Instruments (F4431 ONLY)
Use the white wire, if desired, to connect the
fishfinder to other NMEA instruments such as
NAVMAN’s depth rep eater. (See section 5 -5 for
more information).
26
Fish 4430/4431 Installation and Operation Manual
5-5 Connecting a FISH 4430/4431 to other instruments
Several NAVMAN instruments can be
connected together to share data such as
Depth or Speed. The FISH 4431 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 a ccepts
NMEA 0183 Version 2. Depth, speed and
temperature data is output by the FISH 4431
and can be read and displayed by the NAVMAN
REPEAT 3100, DEPTH 2100, GPS Chartplotter
(5000 series), or other NMEA instrument.
REPEAT 3100
Repeater for depth, speed, water temperature
and battery voltage. Can accept many other
NMEA data inputs from other instruments.
Please contact your NAVMAN dealer for information on NAVMAN’s full range of NMEA enabled
instruments and connection options.
Fish 4430/4431 Installation and Operation Manual
DEPTH 2100
Depth repeater.
27
Appendix A - Specif ications
Depth range
· 2 f t (0.6 m) to 600 ft (180 m).
Display type
· FSTN greyscale.
· Screen resolution 160 high x 120 wide
(pixels).
· White multi-level back lighting.
Supply voltage
· 10 to 16.5 V DC.
Supply current
· 280 mA min - no backlighting.
· 400 mA max - full backlighting.
Operating temperature
· 32 to 122°F (0 to 50°C).
Transom transducer cable length
· 26 f t (8 m) - FISH 4431
· 33 ft (10 m) - FISH 4430
Typical depth acquisition time from startup
· 2 seconds at 100 feet (30 m).
Transmit frequency
· 200 kHz.
Transmit power
· 150 Watts RMS @ 13.8 V DC.
Transmit rate
· Ma x 20 soundings/second
Receiver sensitivity
· Better than 10 micro volts RMS.
126.0 mm (5”)
Standards Compliance
· EMC: USA FCC Part 15 Class B.
Europe (CE) IEC60945
New Zealand & Australia (C Tick)
CISPR 22
· Environment: IPx6 & IPx7
Temperature measurement range
· 32 to 99.9°F (0 to 37.7°C) 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 fishf inder can output the following
data:
· DBT (Depth Below Transducer).
· DP T (Depth and Keel offset).
· TDK (Depth NAVMAN - proprietary).
· TKV (Speed NAVMAN - proprietary).
· VHW (Speed).
· MT W (Water temperature).
· XDR (Batter y voltage).
27.9 mm
30.5 mm
(1.1”)
(1.2”)
28
126.0 mm (5”)
143.5 mm (5.6”)
88.5 mm (3.5”)
Fish 4430/4431 Installation and Operation Manual
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 dif ficulties
without having to send the display unit back to
the manufacturer for repair. Please follow this
trouble-shooting section before contacting the
nearest NAVMAN dealer.
There are no user serviceable parts.
Specialised 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 FISH 4430/4431 may only be
carried out by a service centre approved by
NAVMAN. 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
batter y 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 batter y terminal. If wired for
the Auto Power option, ensure the yellow
wires are connected to 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
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 f ishfinder 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, reset the transducer
back to its original postion. (See the
Transducer Installation Guide for more
information).
c) When in water less than 2 feet ( 0.6 m) 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.
Fish 4430/4431 Installation and Operation Manual
29
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 minimise the
generation of bubbles through cavitation.
(See the Transducer Installation Guide for
more information).
f) Check the transducer and power cable LT
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 FISH 4430/4431.
i) Electrical noise from the boat’s engine
or an accessory may be interfering with
the transducer(s) and/or the NAVMAN
fishf inder. This may cause the f ishfinder
to automatically decrease the gain unless
using Manual Gain. The fishfinder thus
eliminates weaker signals such as fish or
even the bot tom from the display. This
may be checked by switching off other
instruments, accessories (e.g. bilge pump)
and the motor until the offending device is
located. 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 sec tion 3-8).
b) The depth may be outside the fishf inder’s
range. While in Auto Range, the display
unit will f lash 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
180 m (600 ft).
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 sec tion 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 minimise 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 f low 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 fishf inder
to the default contrast setting.
8. The wrong language is displayed:
(See section 2).
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Fish 4430/4431 Installation and Operation Manual
Made in New Zealand
FISH 4430 / 4431
Lon 174° 44.535’E
Lat 36° 48.404’S
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