FISH 4200
F I S H F I N D E R S
Installation and
Operation Manual
w w w . n a v m a n . c o m
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.
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FISH 4200 Installation and Operation Manual |
Contents |
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1 Introduction ..................................................................................................... |
5 |
2 Getting started ................................................................................................. |
6 |
2-1 Simulation Mode .......................................................................................................... |
7 |
3 Operation ......................................................................................................... |
7 |
3-1 ALARMS ..................................................................................................................... |
8 |
3-2 HISTORY screen operation ......................................................................................... |
8 |
3-3 HISTORY screen interpretation ................................................................................... |
9 |
3-4 ZOOM screen ........................................................................................................... |
12 |
3-5 SONAR screen ......................................................................................................... |
12 |
3-6 NAVIGATE screen .................................................................................................... |
13 |
3-7 DATA screen ............................................................................................................. |
14 |
3-8 FUEL screen........................................................................................................... ..... |
14 |
3-9 RANGE menu ........................................................................................................... |
15 |
4 SETUP menu .................................................................................................. |
16 |
4-1 ALARMS menu .......................................................................................................... |
16 |
4-2 UNITS menu ............................................................................................................. |
18 |
4-3 KEY BEEP ................................................................................................................ |
18 |
4-4 FISH SYMBOL .......................................................................................................... |
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4-5 CONTRAST menu .................................................................................................... |
18 |
4-6 LOG menu .............................................................................................................. .... |
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4-7 FUEL menu............................................................................................................. ..... |
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4-8 INSTALL menu .......................................................................................................... |
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4-9 CALIBRATION menu ................................................................................................ |
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4-10 Resetting to Factory Defaults ................................................................................... |
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5 Installation ..................................................................................................... |
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5-1 What comes with the FISH 4200? ............................................................................. |
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5-2 Options and accessories ........................................................................................... |
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5-3 Mounting the FISH 4200 display unit ......................................................................... |
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5-4 Wiring Connection ..................................................................................................... |
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5-5 Connecting the FISH 4200 to other instruments ........................................................ |
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Appendix A - Specifications ............................................................................ |
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Appendix B - Troubleshooting............................................................................... |
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Appendix C - How to contact us.......................................................................... |
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NAVMAN fishfinders 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.
NAVMAN FISH 4200 Installation and Operation Manual |
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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 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 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.
Fuel Computer: Fuel economy can alter drastically depending on the boat loading and sea conditions. The fuel computer should not be the sole source of information concerning available fuel onboard and the electronic information should be supplemented by visual or other checks of the fuel load. This is necessary due to possible operator induced errors such as forgetting to reset the fuel used when filling the tank, running the engine with the fuel computer not switched on or other operator controlled actions that may render the device inaccurate. Always ensure that adequate fuel is carried onboard for the intended trip plus a reserve to allow for unforeseen circumstances.
This manual represents the FISH 4200 as at the time of printing. Navman NZ Limited reserves the right to make changes to specifications without notice.
Copyright © 2002 Navman NZ Limited, New Zealand, all rights reserved. NAVMAN is a registered trademark of Navman NZ Limited.
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FISH 4200 Installation and Operation Manual |
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 4200.
The NAVMAN Fishfinder
The FISH 4200 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 4200 measures the water depth, water temperature and boat speed.
It also measures the battery voltage, engine hours, and fuel consumption (requires optional fuel kit), and has two distance logs (Trip Log and Total Log).
An installed FISH 4200 has two parts:
-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 4200 will detect the bottom down to 600 feet (180 metres), depending on the clarity of the water and the type of transducer used.
Thestrengthofanechocanvaryforanumberofreasons. 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 new proprietary SBN Technology for sonar processing to improvesignalenhancement,bottomrecognition&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 often be mistaken by fishfinders for true returns. Using SBN Technology, the FISH 4200 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 4200 can be used to find 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 influenced by many factors including the location of the transducer. It is the user’s responsibility to ensure that the FISH 4200 is installed and used correctly.
How to find fish
Underwater features like reefs, wrecks and rocky outcrops attract fish. Use the FISH 4200 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 4200, 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 4200 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 FISH 4200 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 sun cover supplied.
NAVMAN FISH 4200 Installation and Operation Manual |
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2 Getting started
Power and transducer connection
The FISH 4200 has two sockets located on the rear of the unit. 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.
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 or NO. (More information on the simulation mode can be found in the following section). Press 
to confirm the selection 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 section 5-4) 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 FISH 4200 then automatically displays the screen that was last used.
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 fishfinder can only be turned off when the boat’s ignition is turned off.
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
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 4-8.
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.
Fuel Computer
With an optional fuel kit the FISH 4200 becomes a sophisticated yet easy to use fuel computer.
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FISH 4200 Installation and Operation Manual |
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.
To turn the Simulation mode on, power the FISH 4200 off, disconnect the blue transducer plug at the rear of unit, then turn the power on.
To 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.
3 Operation
MAIN MENU screen
The FISH 4200 is 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.
Enabled Alarms (displayed on all screens)
HISTORY screen (see section 3-1)
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 3-2)
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. Use this screen for taking a closer look at interesting underwater features.
SONAR screen (see section 3-3)
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.
NAVIGATE 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.
It also displays the boat speed and the enabled alarms.
DATA screen (see section 3-7)
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, water depth and enabled alarms.
FUEL screen (requires optional fuel kit) (see section 3-8)
The FUEL screen displays the amount of fuel used and fuel remaining, and the rate of fuel flow. It also shows the boat speed, water depth and an ECONOMY reading, which is the distance travelled per unit of fuel used. The NAVMAN fishfinder calculates this from the boat speed and fuel used. The bigger the number, the better the fuel economy. Adjust the throttle and trim to achieve the best fuel economy.
SETUP menu (see section 4)
Use this option to customise the FISH 4200 to suit the boat and individual preferences.
RANGE menu (see section 3-9)
Use this option to select either Auto or Manual Range and to change the selected depth range.
NAVMAN FISH 4200 Installation and Operation Manual |
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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 4200 has seven alarms, TOO SHALLOW, TOO DEEP, FISH ALARM, TEMP VALUE, TEMP RATE, LOW BATTERY and LOW FUEL.
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.
Alarms automatically re-enable
The TOO SHALLOW, TOO DEEP, LOW FUEL 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.
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 |
Zoom bar |
Selected |
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with depth |
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depth |
Bottom |
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to(0range |
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Alarms |
150') |
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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
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 4-8).
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.
To change the range mode, see section 3-9.
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FISH 4200 Installation and Operation Manual |
Changing the Gain Mode
Gain (sensitivity) controls the amount of detail displayed on the screen. The FISH 4200 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.
To change betweenAuto 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 
is 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.
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 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 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 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.
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 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 Installation 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.
NAVMAN FISH 4200 Installation and Operation Manual |
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The following picture shows the HISTORY screen with the fish symbols turned off:
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 pattern 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 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.
Large fish
Kelp / weed
Hard bottoms such as rock or coral show as wide bands at the bottom of the screen
Soft bottoms such as mud, weed and sand show as narrow bands at the bottom of the screen
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.
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FISH 4200 Installation and Operation Manual |
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