Furuno FSV35 Operator's Manual

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OPERATOR'S MANUAL

COLOR SCANNING SONAR

Model

FSV-35

www.furuno.com

The paper used in this manual

9-52 Ashihara-cho,

A:JUL

2012

A1:FEB.07, 2013

Pub. No.

(

)

*00017578810*

Nishinomiya, 662-8580, JAPAN

is elemental chlorine free.

・FURUNO Authorized Distributor/Dealer

ETMI

FSV-35

Printed in Japan

OME-13330-A1

*00017578810*

* 0 0 0 1 7 5 7 8 8 1 0 *

IMPORTANT NOTICES

General

• This manual has been authored with simplified grammar, to meet the needs of international users.

• The operator of this equipment must read and follow the descriptions in this manual. Wrong operation or maintenance can cancel the warranty or cause injury.

• Do not copy any part of this manual without written permission from FURUNO.

• If this manual is lost or worn, contact your dealer about replacement.

• The contents of this manual and equipment specifications can change without notice.

• The example screens (or illustrations) shown in this manual can be different from the screens you see on your display. The screens you see depend on your system configuration and equipment settings.

• Save this manual for future reference.

• Any modification of the equipment (including software) by persons not authorized by FURUNO will cancel the warranty.

• All brand and product names are trademarks, registered trademarks or service marks of their respective holders.

How to discard this product

Discard this product according to local regulations for the disposal of industrial waste. For disposal in the USA, see the homepage of the Electronics Industries Alliance (http://www.eiae.org/) for the correct method of disposal.

How to discard a used battery

Some FURUNO products have a battery(ies). To see if your product has a battery, see the chapter on Maintenance. Follow the instructions below if a battery is used. Tape the + and - terminals of battery before disposal to prevent fire, heat generation caused by short circuit.

In the European Union

The crossed-out trash can symbol indicates that all types of batteries must not be discarded in standard trash, or at a trash site. Take the used batteries to a battery collection site according to your national legislation and the Batteries Directive 2006/66/EU.

In the USA

The Mobius loop symbol (three chasing arrows) indicates that Ni-Cd and lead-acid rechargeable batteries must be recycled. Take the used batteries to a battery collection site according to local laws.

In the other countries

PbNi-Cd

There are no international standards for the battery recycle symbol. The number of symbols can increase when the other countries make their own recycle symbols in the future.

SAFETY INSTRUCTIONS

The operator of this equipment must read the safety instructions before attempting to operate the equipment.

Indicates a hazardous situation which, if not avoided, will result in

DANGER

WARNING

CAUTION

Warning, Caution

death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Prohibitive Action

Mandatory Action

DANGER

Keep away from raise/lower shaft in hull unit when it is moving.

Gears in hull unit will cause serious injury.

WARNING

Do not open the equipment.

Only qualified personnel should work inside the equipment.

Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped into the equipment.

Continued use of the equipment can cause fire or electrical shock. Contact a FURUNO agent for service.

Immediately turn off the power at the switchboard if the equipment is emitting smoke or fire.

Continued use of the equipment can cause fire or electrical shock. Contact a FURUNO agent for service.

WARNING

Do not disassemble or modify the equipment.

Fire, electrical shock or serious injury can result.

Do not install the equipment where it may be subject to rain or water splash.

Fire or electrical shock can result if water leaks in the equipment.

Use the proper fuse.

Use of a wrong fuse can result in damage to the equipment or cause fire.

Do not operate the equipment with wet hands.

Electrical shock may result.

Do not place liquid-filled containers on the top of the equipment.

Fire or electrical shock can result if a liquid spills into the equipment.

Turn off the power immediately if you feel the equipment is behaving abnormally.

Turn off the power at the switchboard if the equipment becomes abnormally warm or is emitting odd noises. Contact a FURUNO dealer or agent for advice.

SAFETY INSTRUCTIONS

CAUTION

Maximum speed while the transducer is projected and being raised or lowered is as below, to prevent damage to the transducer.

Projected Raising/ Lowering

1200 mm stroke Max. 18 kn Max. 15 kn

1600 mm stroke Max. 15 kn Max. 12 kn

Replace anticorrosion zinc plate yearly.

Corrosion between the main shaft and transducer may result if not replaced, allowing water leakage and/or loss of transducer.

CAUTION

Observe the following precautions when using industrial use lubricant.

Precautions



Keep lubricant away from eyes. Wear protective goggles when working with the lubricant. The lubricant can cause inflammation of the eyes.



Do not touch the lubricant. Wear protective gloves when working with the lubricant. The lubricant can cause inflammation of the skin.



Do not ingest the lubricant. Diarrhea and vomiting may result.



Keep the lubricant out of reach of children.

Emergency procedures



If the lubricant enters eyes, flush with clean water about 15 minutes. Consult a physician.



If the lubricant contacts skin, flush area with clean water.



If the lubricant is ingested, see a physician immediately.

Disposal of lubricant and its container

Dispose of the lubricant and its container in accordance with local regulations. If you are unclear about the disposal procedure, contact a FURUNO agent or dealer for advice.

WARNING LABELS Warning labels are attached to the units of the system. Do not remove the labels. If a label is missing or damaged, contact a FURUNO agent or dealer about replacement

DANGER

Keep fingers away from gears. Shaft may cause injury. Keep away from moving shaft.

ෂ

䇭㒾

䉩䊟䈮Ꮞㄟ䉁䉏䉎ᕟ䉏䈅䉍䇯 േ䉲䊞䊐䊃䈮䉋䉍䇮䈔䈏䉕䈜䉎ᕟ䉏䈅䉍䇯 Ⓙേ䈲ㄭ䈨䈎䈭䈇䈖䈫䇯

Name: Warning Label Type: 10-071-5313 Code No.: 100-291-160-10

DANGER

Electrical shock hazard. Do not remove cover. No user-serviceable parts inside. Turn off power before servicing. And wait until chargelamp (green) goes off and then remove cover.

ෂ㩷㩷㒾

ᗵ㔚䈱ᕟ䉏䈅䉍䇯䉰䊷䊎䉴䊙䊮એᄖ䈱ᣇ䈲䇮䉦䊋䊷䉕㐿䈔䈭䈇䈪䈒䈣䈘䈇䇯㩷ౝㇱ䈮䈲㜞࿶ㇱຠ䈏ᢙᄙ䈒䈅䉍䇮 ৻䈘䉒䉎䈫ෂ㒾䈪䈜䇯䉰䊷䊎䉴䊙䊮䈏䉦䊋䊷䉕㐿䈔䉎႐ว䈲䇮㔚Ḯ䉕㪦㪝㪝䈚䈢ᓟ䇮䌃䌈䌁䌒䌇䌅䊤䊮䊒䋨✛䋩䈏ᶖἮ 䈚䈩䈇䉎䈖䈫䉕⏕⹺䈚䈩䈎䉌㐿䈔䈩䈒䈣䈘䈇䇯

WARNING

To avoid electrical shock, do not remove cover. No user-serviceable parts inside.

⼊䇭๔

ᗵ㔚䈱ᕟ䉏䈅䉍䇯

䉰䊷䊎䉴䊙䊮એᄖ䈱ᣇ䈲䉦䊋䊷䉕㐿䈔䈭䈇䈪䈘䈇䇯ౝㇱ䈮䈲㜞㔚࿶ㇱಽ䈏 ᢙᄙ䈒䈅䉍䇮৻䈘䉒䉎䈫ෂ㒾䈪䈜䇯

Name: Warning Label (1) Type: 86-003-1011-3 Code No.: 100-236-233-10

Name: Warning Label Type: 10-079-6144 Code No.: 100-310-880-10

iii

FOREWORD ................................................................................................................. viii

SYSTEM CONFIGURATION ..........................................................................................ix

1. OPERATIONAL OVERVIEW .................................................................................1-1

1.1 Control Description.....................................................................................................1-1

1.1.1 Control unit..................................................................................................... 1-1

1.1.2 Sub control unit (option)................................................................................. 1-2

1.1.3 Remote controller (option).............................................................................. 1-3

1.2 Turning the Power On/Off ..........................................................................................1-4

1.3 Lowering, Raising the Transducer ............................................................................. 1-5

1.3.1 Lowering the transducer................................................................................. 1-5

1.3.2 Raising the transducer ................................................................................... 1-5

1.4 Screen Brilliance, Panel Dimmer ............................................................................... 1-5

1.4.1 Screen brilliance............................................................................................. 1-5

1.4.2 Panel dimmer.................................................................................................1-6

1.5 Display Mode, Display Division .................................................................................. 1-7

1.5.1 How to select a display mode ........................................................................1-8

1.5.2 Display mode pictures....................................................................................1-8

1.6 How to Adjust the Gain ............................................................................................ 1-10

1.7 How to Use the Menu...............................................................................................1-11

2. HORIZONTAL MODE ............................................................................................2-1

2.1 Basic Operating Procedure ........................................................................................ 2-1

2.2 Indications and Markers ............................................................................................. 2-2

2.2.1 Horizontal mode, full-screen display .............................................................. 2-2

2.2.2 Horizontal2 mode........................................................................................... 2-3

2.3 Display Range............................................................................................................2-4

2.4 Tilt Angle .................................................................................................................... 2-5

2.4.1 How to set the tilt angle..................................................................................2-5

2.4.2 Automatic tilt................................................................................................... 2-5

2.4.3 Relation between bottom echo and tilt angle................................................. 2-7

2.4.4 Tilt angle for surface fish................................................................................2-8

2.4.5 Suitable tilt angle............................................................................................2-8

2.5 How to Measure Range and Bearing to a Target.......................................................2-9

2.6 How to Eliminate Weak Echoes ................................................................................. 2-9

2.7 How to Adjust Strong, Weak Echoes .......................................................................2-12

2.7.1 AGC .............................................................................................................2-12

2.7.2 Near AGC..................................................................................................... 2-12

2.7.3 2nd AGC ......................................................................................................2-13

2.7.4 How to shorten pulse length......................................................................... 2-14

2.8 How to Suppress Bottom and Sea Surface Reflections in Shallow Waters ............. 2-15

2.9 How to Reject Sonar Interference and Noise........................................................... 2-16

2.9.1 How to identify the noise source .................................................................. 2-16

2.9.2 Change TX interval ......................................................................................2-16

2.9.3 Interference rejector.....................................................................................2-17

2.9.4 Shift TX frequency........................................................................................ 2-17

2.9.5 Noise limiter .................................................................................................2-18

2.9.6 Reverberation............................................................................................... 2-19

2.9.7 Echo average...............................................................................................2-19

2.9.8 Reference bearing in frequency shift ...........................................................2-19

2.9.9 How to suppress the gain of bottom echo.................................................... 2-19

2.10 How to Adjust Beamwidth ........................................................................................ 2-19

TABLE OF CONTENTS

2.11 How to Track a School of Fish..................................................................................2-20

2.11.1 How to select the target lock mode ..............................................................2-20

2.11.2 Fish mode.....................................................................................................2-21

2.11.3 Target mark mode ........................................................................................2-22

2.11.4 Target lock menu description .......................................................................2-22

2.12 Presentation Mode ...................................................................................................2-23

2.12.1 Presentation mode description.....................................................................2-23

2.12.2 How to select a presentation mode ..............................................................2-24

2.13 How to Detect Schools of Fish Aurally .....................................................................2-24

2.13.1 How to set the bearing .................................................................................2-24

2.13.2 How to select the audio sector .....................................................................2-25

2.13.3 Automatic training.........................................................................................2-25

2.13.4 Reverberation for audio signal .....................................................................2-26

2.14 Fish Alarm ................................................................................................................2-26

2.15 How to Relocate a School of Fish ............................................................................2-27

2.16 How to Compare Concentration of School of Fish ...................................................2-27

2.16.1 How to compare with the fish estimate mark................................................2-27

2.16.2 How to compare with the circle cursor .........................................................2-29

2.17 How to Measure the Speed of a School of Fish .......................................................2-30

2.17.1 How to measure the speed of a school of fish .............................................2-30

2.17.2 How to delete fish marks ..............................................................................2-31

2.18 Event Mark, Own Ship Position Mark .......................................................................2-32

2.18.1 How to enter an event mark .........................................................................2-32

2.18.2 How to enter an own ship position mark ......................................................2-33

2.18.3 How to erase an event mark, own ship position mark..................................2-33

2.19 Net Course Mark ......................................................................................................2-34

2.20 Net Behavior.............................................................................................................2-35

2.21 Menu Items Descriptions ..........................................................................................2-36

2.22 How to Interpret the Horizontal Display ....................................................................2-39

2.22.1 Bottom and school of fish echoes ................................................................2-39

2.22.2 Unnecessary echoes....................................................................................2-41

3. VERTICAL MODE..................................................................................................3-1

3.1 Basic Operating Procedure ........................................................................................3-1

3.2 How the Vertical Mode Works ....................................................................................3-2

3.2.1 Overview ........................................................................................................3-2

3.2.2 How to set the vertical display........................................................................3-2

3.3 Vertical Indications and Marks....................................................................................3-3

3.3.1 Typical vertical display ...................................................................................3-3

3.3.2 Vertical bearing mark, tilt mark.......................................................................3-4

3.3.3 Cursor position reference mark ......................................................................3-5

3.4 Auto Train...................................................................................................................3-5

3.5 Display Range ............................................................................................................3-5

3.6 How to Measure the Range, Bearing to a Target.......................................................3-6

3.7 How to Eliminate Weak Echoes .................................................................................3-6

3.8 How to Adjust Strong, Weak Echoes..........................................................................3-9

3.8.1 AGC................................................................................................................3-9

3.8.2 Near AGC.......................................................................................................3-9

3.8.3 2nd AGC.......................................................................................................3-10

3.8.4 How to shorten pulse length.........................................................................3-10

3.9 How to Reject Sonar Interference and Noise ...........................................................3-11

3.9.1 How to identify the noise source ..................................................................3-11

3.9.2 Interference rejector .....................................................................................3-12

3.9.3 Shift TX frequency........................................................................................3-12

3.9.4 Noise limiter..................................................................................................3-12

3.9.5 Reverberation...............................................................................................3-14

TABLE OF CONTENTS

3.9.6 Echo average...............................................................................................3-14

3.9.7 How to suppress the bottom echo................................................................ 3-14

3.10 How to Adjust Beam Width ......................................................................................3-15

3.11 Other Menu Items ....................................................................................................3-16

3.12 Application to Bonito and Tuna Fishing.................................................................... 3-17

3.12.1 Searching..................................................................................................... 3-17

3.12.2 Tracking ....................................................................................................... 3-17

3.12.3 Approaching................................................................................................. 3-18

3.12.4 Catching....................................................................................................... 3-18

4. NUMERIC/GRAPHIC DATA DISPLAY..................................................................4-1

4.1 Numeric/Graphic Data Display...................................................................................4-1

4.2 Numeric, Graphic Data Description............................................................................ 4-2

5. HOW TO CUSTOMIZE THE EQUIPMENT ............................................................5-1

5.1 User Menu..................................................................................................................5-1

5.1.1 How to program the user menu...................................................................... 5-1

5.1.2 How to delete items from the user menu .......................................................5-2

5.2 Function Keys (F1 to F10)..........................................................................................5-2

5.2.1 How to execute a program.............................................................................5-3

5.2.2 How to program the function keys.................................................................. 5-3

5.2.3 How to erase programs..................................................................................5-4

5.2.4 How to program the function keys of remote controller.................................. 5-4

5.3 USER PROG Control ................................................................................................. 5-5

5.3.1 How to select a user program ........................................................................ 5-5

5.3.2 How to program the USER PROG control ..................................................... 5-5

6. OTHERS MENU .....................................................................................................6-1

6.1 Erase Marks Menu ..................................................................................................... 6-1

6.2 Wheel Setting Menu...................................................................................................6-2

6.3 Display Setting Menu .................................................................................................6-3

6.4 Alarm & Audio Menu ..................................................................................................6-5

6.5 Register Menu............................................................................................................6-6

6.6 Initial Setting Menu.....................................................................................................6-7

7. RECORD/RECALL OPERATION ..........................................................................7-1

7.1 How to Specify Where to Save Still Images...............................................................7-1

7.2 How to Save Still Images ...........................................................................................7-2

7.3 How to Display Saved Still Images ............................................................................ 7-2

7.4 How to Save Settings.................................................................................................7-4

7.5 How to Load Files ...................................................................................................... 7-5

7.5.1 How to load the setting information................................................................ 7-5

7.5.2 How to replay setting information................................................................... 7-6

7.6 How to Delete Files .................................................................................................... 7-7

8. MAINTENANCE, TROUBLESHOOTING...............................................................8-1

8.1 Preventive Maintenance.............................................................................................8-1

8.2 Hull Unit Maintenance ................................................................................................ 8-2

8.3 How to Replace Fuses ............................................................................................... 8-3

8.4 Battery on the Mother Board ...................................................................................... 8-3

8.5 How to Clean the Filter in the Processor Unit ............................................................8-4

8.6 How to Clean the Trackball on the Control Units .......................................................8-4

8.7 Troubleshooting ......................................................................................................... 8-5

8.8 Warning Messages .................................................................................................... 8-6

8.9 Error Codes................................................................................................................8-7

8.10 Status Messages........................................................................................................8-8

TABLE OF CONTENTS

8.11 Tests...........................................................................................................................8-8

8.11.1 Test menu ......................................................................................................8-8

8.11.2 Board test .......................................................................................................8-9

8.11.3 Panel test .....................................................................................................8-10

8.11.4 Test pattern ..................................................................................................8-11

8.12 How to Raise the Transducer from the Hull Unit......................................................8-11

8.12.1 How to raise the transducer automatically ...................................................8-12

8.12.2 How to raise the transducer manually ..........................................................8-13

APPENDIX 1 MENU TREE .......................................................................................AP-1

SPECIFICATIONS .....................................................................................................SP-1

INDEX ......................................................................................................................... IN-1

vii

FOREWORD

A Word the Owner of the FSV-35

Congratulations on your choice of the FURUNO FSV-35 Color Scanning Sonar. We are confident you will see why the FURUNO name has become synonymous with quality and reliability.

Since 1948, FURUNO Electric Company has enjoyed an enviable reputation for quality marine electronics equipment. This dedication to excellence is furthered by our extensive global network of agents and dealers.

This equipment is designed and constructed to meet the rigorous demands of the marine environment. However, no machine can perform its intended function unless operated and maintained properly. Please carefully read and follow the recommended procedures for operation and maintenance.

Thank you for considering and purchasing FURUNO equipment.

Features

The FSV-35 is a full-circle, multibeam electronic color scanning sonar which detects and displays schools of fish on the monitor of your choice.

The main features of the FSV-35 are

• Sphere transducer provides 90 degrees vertical detection.

• Menu-driven operation.

• Vivid 32-color echo strength dependent display for improved recognition of bottom, fish school concentration, distribution and volume.

• Dual Display mode

• Schools of fish can be searched from horizontal (range direction), vertical (depth direction) with vertical features.

• Pitching and rolling compensation for stable picture always.

• User programs for one-touch setup of equipment.

• Function keys for direct access to desired menu item.

• Storage and replay of picture and settings.

• Wide variety of display combination modes: horizontal and vertical.

• Various marks and alphanumeric fishing and navigation information for intuitive operation.

• Fish histogram shows signal strength distribution of echo within estimate mark.

• Audio function for monitoring echoes along user-selected area through loudspeaker (option).

• Fish mark estimates fish speed.

• Fish estimate feature to compare the volume of two schools of fish.

• Net course mark shows probable drift of net against tidal current.

viii

SYSTEM CONFIGURATION

FUSE

MAIN SW

CHARGE

OV ERR

BV ERR

Standard configuration is shown with solid line.

12-24 VDC

Rectifier RU-1746B-2

100/110/115/ 220/230 VAC,

, 50/60 Hz

Monitor

Processor Unit

FSV-3503

IF Unit

FSV-8502

Monitor

USB device (mouse, etc.)

Junction Box FI-5002

NMEA IEC 61162-1 device

Speaker

Sub Control Unit FSV-853

Control Unit FSV-8501

Remote Controller FSV-854

Transceiver

Unit

FSV-351

100/110/115/ 220/230 VAC 1

, 50/60 Hz

: Optional equipment

Extension Kit

FSV-305-5

FSV-305-15

(Incl. Junction

Box)

220 VAC 3

, 50/60 Hz

Hull Unit

Type Stroke

FSV-303 䇭1200 mm

FSV-304

䇭1600 mm

SYSTEM CONFIGURATION

This page is intentionally left blank.

1. OPERATIONAL OVERVIEW

1.1 Control Description

1.1.1 Control unit

MENU/

ESC

䌆1

AUTO

䌆2

TILT

USER PROG

MODE

䌆3

DISP

䌆4

SHOOT

GAIN

䌆5

V1/S

AUTO TRAIN

R/B

AUDIO

H/V/S

䌆6

OFF

CENTER

DELETE

MARK

RANGE

䌆7

䌆8

EVENT

ESTIMATE

TAR GET LOCK

䌆9

EVENT

ESTI-

MATE

FISH

䌆10

Function key

Key Function

| Turns power on.

Tilt lever

Trackball

Scrollwheel

Left-click button

Right-click button

Trackball unit

Turns power off.

Raises the transducer.

Lowers the transducer (mid protrusion).

Lowers the transducer (full protrusion).

SHOOT

Enters the net shooting mark or own ship mark.

V1/S

Sets vertical cross section bearing.

AUTO TRAIN

Automatic transducer train width on audio bearing mark (horizontal mode), vertical bearing mark (vertical mode).

OFF CENTER Off centers own ship’s position (horizontal mode).

R/B AUDIO

• Displays range and bearing marks (horizontal mode).

• Sets the audio bearing.

DELETE MARK Deletes trackball-selected mark.

EVENT

EVENT ESTIMATE 1 ESTIMATE 2

Enters event mark 1 or own ship mark (horizontal mode).

Enters event mark 2 or own ship mark (horizontal mode).

Turns the estimate mark on/off (horizontal mode).

1-1

1. OPERATIONAL OVERVIEW

Key Function

TARGET

LOCK

FISH

MENU/ESC Short-press: Opens or closes the menu; returns to the previous menu.

AUTO TILT Sets auto tilt angle.

DISP MODE Selects display mode.

H/V/S • Selects the mode tab on the menu.

Function key

(F1 to F10)

USER PROG

control

GAIN control Adjusts gain for horizontal vertical scans.

RANGE control Selects the display range for horizontal and vertical scans.

Tilt lever Sets transducer tilt angle for horizontal scans.

Trackball unit Trackball:

Enters target lock mark (horizontal mode).

Enters fish mark (horizontal mode).

Long-press: Closes all menus.

• Selects mode to adjust sensitivity, select range, set tilt, and user program number.

Execute assigned program.

Selects user-programmed settings.

• Positions cursor.

• Selects items, options on menu.

Left-click button:

• Confirms the selected item.

• Selects the item to drag and drop.

Scrollwheel:

• Rotate: Sets numeric data.

• Rotate: Selects menu item.

• Rotate: Sets tilt angle, range, bearing/train angle, gain, and user program number.

• Push: Confirms the selected item.

• Push: Shows the [Select Mark] window.

Right-click button:

• Shows pop-up menu.

• Confirms the selected item.

1.1.2 Sub control unit (option)

The sub control unit lets you control the sonar from a remote location.

No. Function (on control unit)

Same as F1, F2, F3 and F4 key.

(The program can be changed. See section 5.2.4.)

Same as trackball unit on control unit.

1-2

1.1.3 Remote controller (option)

The remote controller lets you control the sonar from a remote location.

Note: Keep the remote controller away from water and water splash. Hook the remote controller to the bracket when it is not in use.

No. Function (on control unit)

1 Same as F1, F2 and F3 key.

1. OPERATIONAL OVERVIEW

Same as key.

,䇭䇭,

䇭

3 Same as right-click button.

4 Same as the left-click button.

Same as [EVENT], [ESTI-

MATE], [TARGET LOCK] and [FISH] keys.

6 Same as trackball.

7 Same as OFF CENTER key.

8 Same as USER PROG control.

9 Same as GAIN control.

10 Same as RANGE control.

11 Same as SHOOT key.

12 Records the current picture.

13 Shows the still image window.

14 Same as DISP MODE key.

䌆䋱䌆䋲䌆䋳

1 2

OFFCENT

345

SHOOT

MEMO

DISP

RECALL

MODE

11 12

13 14

AUTO

H/V/S

17 18

15 Same as AUTO TRAIN key.

16 Same as V1/S, V2 key.

17 Same as AUTO TILT key.

18 Same as TILT lever.

19 Same as H/V/S key.

1-3

1. OPERATIONAL OVERVIEW

㪦

Change of the lamps

1.2 Turning the Power On/Off

Turning the power on

Press the POWER ON ( | ) switch. A beep sounds, and the display changes in the following sequence: FURUNO display → model display → board test display. Then lamp above the switch changes as below. The last-used mode is activated in approximately 140 seconds after turning the power on.

Lamp

When pressing the POWER ON switch

㪪㪟

Change of the lamps

Lamp

: ON

: OFF

POWER OFF switch

POWER ON switch

Turning the power off

1. First retract the transducer with the key. The lamp above the key blinks while

2. After the key lights steadily, press the POWER OFF ( ) switch for more than

Full protrusion key

Mid protrusion key

Retraction key

After the board test is completed

the transducer is being raised and lights steadily when it is fully raised. Note: While raising the transducer, the ship speed must be no more than 12 knots (for 1600 mm stroke) or 15 knots (1200 mm stroke) to prevent damage to the

transducer and hull unit.

three seconds. Note: The transducer is automatically retracted into the tank if the POWER OFF

switch is pressed before retracting the transducer. However, for safety purposes, retract the transducer before turning off the power.

1-4

1. OPERATIONAL OVERVIEW

CAUTION

1.3 Lowering, Raising the Transducer

CAUTION

Maximum speed while the transducer is projected and being raised or lowered is as below, to prevent damage to the transducer.

Projected Raising/ Lowering

1200 mm stroke Max. 18 kn Max. 15 kn

1600 mm stroke Max. 15 kn Max. 12 kn

1.3.1 Lowering the transducer

With the boat at the fishing ground and the power on, press the or key. The lamp above the key pressed blinks during lowering and lights when the transducer is completely lowered to selected protrusion distance. It takes about 22 seconds for full protrusion in case of 1200 mm stroke and 29 seconds in case of 1600 mm stroke. In normal use fully lower the transducer. If the transducer becomes entangled in the net for some reason, partially raise the transducer with the key. This raises the transducer by 400 mm.

1.3.2 Raising the transducer

Press the key to raise the transducer. The lamp above the switch blinks while the transducer is being raised and lights steadily when it is fully raised.

1.4 Screen Brilliance, Panel Dimmer

1.4.1 Screen brilliance

The brilliance of an external monitor can not be adjusted from the control unit. Use the associated control on the monitor.

1-5

1. OPERATIONAL OVERVIEW

1.4.2 Panel dimmer

1. Press the MENU/ESC key to open the main menu.

2. Select [Others] then push the left-click button.

3. Select [Display Setting] then push the left-click button.

1-6

4. Select [Dimmer] then push the left-click button to show the setting box.

Echo picture

display (Within

Range)

Echo picture

display (Full

Screen)

Numeric/graphic

data display

Numeric/graphic

data display

5. Select S (increase) or T (decrease).

6. Push the left-click button several times to select a value.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

Note: The default function of the F8 key adjusts the panel dimmer.

1.5 Display Mode, Display Division

There are four display modes; Horizontal, Horizontal1 + Horizontal2*, Vertical1*, and Vertical 1 + Vertical 2*.

1. OPERATIONAL OVERVIEW

*: If the FSV-35 is fitted with dual monitors, you can select how the picture data is

shown on two displays; Dual Display or Sub Display. For details, see page 6-3.

W E

Main monitor

300

Sub monitor

Ex; Dual Display (H1 + H2 mode)

Display format

As shown in the illustration below, you have two choices with which to show the echo display. See page 6-6 for how to select the display method. For the numeric/graphic data display, see chapter 4.

Echo picture

display (Within

Range)

data display

Numeric/graphic

Echo picture

display (Full

Screen)

data display

Numeric/graphic

1-7

1. OPERATIONAL OVERVIEW

1.5.1 How to select a display mode

Press the MODE key several times until the desired display appears. The default modes are Horizontal, Horizontal1 + Horizontal2, Vertical1, and Vertical1 + Vertical2. You can program the MODE key to show any or all of the modes mentioned above. For further details, see page 6-6.

The MODE key may be programmed to show a pull-down menu instead of a conventional menu.

1. Push the right-click button on the numeric/graphic data display.

2. Select [Display Mode] then push the left-click button.

3. Select the mode to display then push the left-click button.

1.5.2 Display mode pictures

Below are typical pictures. For sake of brevity, indications and marks are not shown.

Horizontal mode

This mode provides 360-degree coverage around the vessel and it is useful for general search. For further details, see chapter 2.

NUMERIC/ GRAPHIC

DATA

DISPLAY

1-8

Horizontal mode

1. OPERATIONAL OVERVIEW

H2 mode

This mode provides two horizontal screens (H1 and H2) in one of the configurations shown below. The default configuration, Landscape, shows two horizontal displays, one up and one down. Other configurations available are as shown below. Desired configuration may be selected on [H2 Display] in the [Display Setting] menu. For further details, see chapter 2.

NUMERIC/

GRAPHIC

DATA

DISPLAY

LANDSCAPE PORTRAIT

㪟㪈㪟㪉

1 2 3

1 2

NUMERIC/

GRAPHIC

DATA

DISPLAY

Zoom-out window

H2 mode

NUMERIC/

300

2000

2 3

1 2 3

GRAPHIC

DATA

DISPLAY

INSET

1-9

1. OPERATIONAL OVERVIEW

㪈㪇㪇㪇

㪌㪇㪇

㪈㪇㪇㪇

㪌㪇㪇

V1 and V2 modes

The V1 and V2 modes show a vertical slice of the bearing selected by the vertical bearing mark on the horizontal display. The vertical 2 mode provides two vertical slices. For further details, see chapter 3.

㪥

㪟㪟

㪮

㪈㪇㪇㪇㪈㪌㪇㪇

㪌㪇㪇

㪭㪈

㪌㪇㪇

㪉㪇㪇㪇

㪈㪇㪇㪇

㪪

㪭

NUMERIC/

GRAPHIC

㪜

DATA

DISPLAY

V1 mode

Vertical mode

1.6 How to Adjust the Gain

The GAIN control adjusts receiver gain (sensitivity) for the horizontal and vertical modes. Adjust it so fish echoes are clearly displayed with minimal noise on the screen. Too high a gain setting not only displays excess noise and makes it difficult to discriminate wanted echoes but also causes bottom echoes to be painted in strong colors, resulting in echoes being masked by bottom reflections. Normally, set the control somewhere between positions 3 and 7.

㪥

㪮

㪈㪇㪇㪇㪈㪌㪇㪇㪌㪇㪇㪈㪇㪇㪇㪈㪌㪇㪇

㪌㪇㪇

㪉㪇㪇㪇

㪈㪇㪇㪇

㪭㪉㪭㪈

㪪

V1 & V2 mode

㪈㪉

NUMERIC/

GRAPHIC

㪜

DATA

㪌㪇㪇

DISPLAY

㪌㪇㪇

㪈㪇㪇㪇

1-10

Gain too low

Gain proper

Gain too high

1. If the horizontal and vertical modes are active, press the H/V/S key to show the range and gain indications of the mode you wish to adjust. Pressing the H/V/S key changes the color of the range and gain indications to orange.

• H1/H2: Horizontal1 or horizontal2

• V1/V2: H or V display

2. Adjust the GAIN control.

New gain setting is momentarily displayed in large characters at the top of each display. The setting value is always displayed next to “G“. (For the vertical display, the gain indication is shown at the bottom of the display.)

Note: The gain can also be adjusted from the gain indication. Put the cursor on the gain indication to highlight it in yellow then roll the scrollwheel.

1.7 How to Use the Menu

Most operations are carried out from the menu. This section provides basic menu operating information.

1. Press the MENU/ESC key to open the main menu.

1. OPERATIONAL OVERVIEW

Menu title

Select “Shortcut Menu” to show the menu title you programmed. (See section 5.1.)

The descriptions for the selected item appears in this field.

Select QUIT with trackball and then left click to close the menu.

“...” means that this item has sub menus.

Note: You can also show the main menu by pushing the right-click button to show the pop-up menu. See page 1-12.

2. Operate the trackball to place the arrow cursor on the item you want to select. The yellow cursor marks the current selection. You can also use the scrollwheel to select a menu item.

3. Push the left-click (or right-click, scrollwheel) button. If you selected [TX/RX Setting] at step 2 for example, the following menu appears.

Scanning mode tab

This icon means that this item is assigned to a function key.

4. Press the H/V/S key to select the display mode.

• H1, H2 tab: Items for horizontal display setting

• V tab: Items for the vertical display setting

Items which you can not set are shown in gray.

5. Select the item then push the left-click button.

(Numeric window) (Item window)

1-11

1. OPERATIONAL OVERVIEW

6. Select the setting.

• (Numeric) Select S to increase the value then push the left-click button (or roll the scrollwheel upward). To decrease the value, select T and push the left-click button (or roll the cursor scrollwheel downward).

• (Items) Select an item then push the left-click button.

7. Select [Quit] on the setting box then push the left-click button to close the box. If you want to cancel the setting, select [Cancel].

8. Long-press the MENU/ESC key to close all menus. You can also close all menus by selecting [Quit] on the active menu and longpushing the left-click button.

You can relocate menu windows. Use the trackball to put the arrow cursor on the menu title (blue when menu is active), push the left-click button, drag the window to new location then release the left-click button. The position of the menu windows is saved.

Note 1: In the default setting, the sub menu item [Initial Setting] in the [Others] menu and some items in the [Initialization] menu are shown in red. This means these items are locked to prevent accidental change of setting. When you open one of these sub menus and select an item, the confirmation message shown below appears. To change the setting of the selected item, select [Changeable] and push the left-click button to show the dialog box for the item. To escape, select [Cancel] then push the left-click button.

If you do not want to show the confirmation message above, see page 6-16.

Note 2: If two menu items are functionally related, the setting of one menu item may cause restriction to another menu item. In this case, the equipment ignores both settings to use different ones or invalidates the setting of the item encountering restriction. The invalid setting value or menu item is shown in gray.

Pop-up menu operation

Push the right-click button on the numeric/graphic data display to show the pop-up menu. These items can be accessed from the main menu.

1-12

2. HORIZONTAL MODE

2.1 Basic Operating Procedure

2. Lower transducer.

: Mid protrusion

1. Turn on power.

䋺Full protrusion

MENU/

ESC

䌆1

AUTO

䌆2

TILT

USER PROG

䌆3

SHOOT

DISP

MODE

GAIN

䌆4

䌆5

6. Adjust gain.

V1/S V2

AUTO

TRAIN

R/B

AUDIO

H/V/S

䌆6

CENTER

DELETE

MARK

䌆7

OFF

RANGE

EVENT

ESTI-

MATE

FISH

䌆10

MATE

TARG ET LOCK

䌆8

䌆9

7. Set tilt angle.

5. Select range.

4. Press to choose the screen (horizontal or vertical,

or horizontal1 or horizontal2) to adjust gain and range.

3. Select horizontical display.

Control unit

2-1

2. HORIZONTAL MODE

2.2 Indications and Markers

2.2.1 Horizontal mode, full-screen display

The full-screen horizontal display provides a 360° picture around the boat. To display the full-screen horizontal picture, press the DISP MODE key.

Target lock mark

Net shoot data Distance run from shooting Time from shooting

Trackball data

Slant range

Horizontal range

Depth

Relative bearing

or True bearing*

Wind speed, direction*

Latest event marks

Auto train mark

Audio bearing mark

Heading mark

North mark*

Own ship mark

Current (tide) mark*

Range ring

Bearing scale

Event mark

Event mark data

Horizontal range

Present depth

Depth at time of

mark entry

Relative bearing

or True bearing*

* Requires appropriate sensor.

** Appears with head-up mode.

Note 1: When the settings listed below are changed, the setting value is shown at the top of the display for five seconds. The location of the setting value can be changed. Contact your dealer for details.

㪙㩷㩷㪈㪈㪌°

㪮㪈㪉㫄㪆㫊

㪉㪐㪇

㪉㪏㪇

㪮

㪉㪍㪇

㪉㪌㪇

㩷㩷㪋㪏㫄㩷㩷㩿㪉㪈㪇㫄㪀㪙㪊㪊㪇°

㪊㪇㪇

㪈㪋㪏㫄

㪈㪋㪏㫄㪈㪋㪉㫄

㪉㪋㪇

㪋㪌㫄

㪊㪈㪇

㪉㪊㪇

㩷㩷㩿㪉㪈㪇㫄㪀

㪙㪊㪋㪇°

Cursor position

Fish track*

㪇㪅㪌㪈㪥㪤

㪌㪑㪊㪉

㪊㪉㪇

㪉㪉㪇

㪈㪍㪏㫄

㩷㩷㪋㪏㫄

㪊㪊㪇

㪉㪈㪇

㪊㪋㪇

㪈

㪉

㪊㪋°㪌㪍㪅㪎㪏㪐㪥

㪈㪉㪊°㪋㪌㪅㪍㪎㪏㪜

Range ring data

Fish mark

Heading direction*,**

㪥

㪊㪌㪇

㪈

㪉

㪊

㪈

㪉

㪊

㪈㪌㪇

㪈㪐㪇

㪪

Net sonde mark*

Line connecting fish marks

㪈㪇

㪉㪇

㪈

䊶

䊶䊶

䊶

䊶䊶䊶

䊶

㪏㪌

㪉

㪈

㪉

㪊

㪈㪉㪊

㪈

㪉

㪊

㪈㪍㪇

㪈㪎㪇

Net shoot mark

Latest fish mark

㪊㪇

㪈

㪈㪋㪇

㪈㪌㪇

㪩㪈㪋㪍㫄㪙㪉㪐㪇°

Range mark and audio bearing mark data

㪟㪄㪬㪧

㪋㪇

㪟㩷㪩㪋㪇㪇㫄

㪘㪬㪫㪦

㪌㪇

㪈㪊㪇

㪪㪈㪉㪅㪊㫂㫅㪚㪉㪌㪍°

㪈㪎°㪫

㩿㪉㪈°㪀

㪞㪈㪅㩷㪇㪧㩷㩷㪏

㪍㪇

㪎㪇

㪈㪇㪇

㪈㪈㪇

㪈㪉㪇

㪉㪊㪇㫄

㪎㪇㫄

Presentation mode

Display mode

Scan data Range Current auto tilt Gain User program no.

Fish movement vector

Fish estimate mark no. Fish estimate mark

㪏㪇

Fish estimate mark data

㪜

Range mark

Cursor

Own ship position mark

Ship's track*

Target lock/fish movement data

Horizontal range

Depth

Speed

Course

2-2

• Gain (See section 1.6.)

• Tilt angle (See section 2.4.)

• Automatic training (See section 2.13.3.)

• Display range (See section 2.3.)

• Automatic tilt (See section 2.4.2.)

• User program (See section 5.3.1.)

Note 2: The color of the event mark, fish mark, and fish estimate mark can be changed on the menu: main menu → [Others] → [Initial Setting] → [Mark Display] → [Mark Color].

2.2.2 Horizontal2 mode

The H2 mode shows one of three kinds of horizontal display combinations: Landscape, Portrait or Inset as shown on page 1-9. Follow the procedure shown below to select a combination display. The zoom-out display (shown on the inset mode) can be moved by drag and drop operation and its size changed from the menu.

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select [Display Setting] then push the left-click button.

2. HORIZONTAL MODE

4. Select [H2 Display] then push the left-click button.

5. Select the desired option then push the left-click button.

6. Select [Quit] on the setting box then push the left-click button.

7. Long-press the MENU/ESC key to close all menus.

Note: Range, tilt angle, gain and program keys can be adjusted for each display.

2-3

2. HORIZONTAL MODE

2.3 Display Range

The RANGE control selects the detection range and eight ranges are preset at the factory. The range selected is momentarily displayed in large characters at the top of the screen. Range is always displayed next to “R“ at the top right of the screen.

Default settings for the display range (unit: m)

Range No. 1 2 3 4 5 6 7 8

Detection range 200 400 600 1000 1600 2000 3000 4000

Note: Ranges can be preset at the [H-Scan Range] on the [Others] - [Register] menu. See page 6-6.

1. If the vertical display is active, press the H/V/S key to select the horizontal display. If the two horizontal displays are active, press the H/V/S key to select H1 or H2 to change the range. The range and gain indications of the horizontal mode must be in orange to change the range (and gain).

Bottom

Range displayed on display

Surface

2. Operate the RANGE control to select a range.

Note 1: The range can also be adjusted from the range indication. Put the cursor on

the range indication to highlight it in yellow then roll the scrollwheel.

Note 2: In the target lock function, the range is automatically changed according to target position if [Tilt Interlock] on the [Target Lock] menu is selected to [Tilt & Range].

2-4

2.4 Tilt Angle

The tilt angle shows the direction to which the sound wave is emitted. When the sound wave is emitted horizontally, the tilt angle is said to be 0° and when vertically, 90°. The tilt angle can be set between -5° (upward) to 90° (downward), in increments of 1°. The tilt angles for horizontal 1 and horizontal 2 modes can be set independently of one another.

2.4.1 How to set the tilt angle

To set a tilt angle manually, operate the TILT control. Watch the tilt angle indication and tilt angle indicator at the top right corner of the screen. The tilt angle is shown next to “T“ at the top right of the screen.

Select tilt angle depending on target fish. For surface fish select a shallow angle (about 5°) and for bottom fish, a deep angle.

Transducer

2. HORIZONTAL MODE

-5-degree

0-degree horizontal direction (tilt angle 0-degree)

Note 1: In the factory default condition, the tilt angle can also be adjusted by rolling the scrollwheel.

Note 2: The tilt angle can also be adjusted from the tilt angle indication. Put the cursor on the tilt angle indication to highlight it in yellow then roll the scrollwheel.

Note 3: The TILT control functions as a bearing setting lever when the following con- ditions are met: [Tilt Lever] in the [Display Setting] menu is selected to [Tilt & V1], and the vertical display is chosen in the vertical mode.

2.4.2 Automatic tilt

The AUTO TILT key automatically scans the tilt angle within the selected width. This is useful when you want to find the center depth of a school of fish. Wide tilt angle is activated from the [Auto Tilt] on the [Others] - [Display Setting] menu.

1. Press the AUTO TILT key to select auto tilt angle desired. Each time the key is pressed the auto tilt angle changes in the following sequence.

OFF  [±1° - 4°]

+90-degree

[±2° - 6°]

Tilt angle setting range

[±3° - 8°

]

(Narrow)

OFF



[±2° - 10°]

[±4° - 16°]

[±6° - 20°

]

(Wide)

2-5

2. HORIZONTAL MODE

2. If necessary, operate the TILT control to change center tilt angle. In automatic tilt, “AUTO” is displayed at the top right corner. To disable automatic tilt, select OFF at step 1.

N-UP

R 400m

AUTO

17°T

(21

G10 P 8

Automatic tilt angle (narrow) with

Auto tilt is active

)

Current tilt angle

AUTO TILT key

Range (m) Width 1 Width2 Width3 Period

60, 100 150, 200 300, 400 500, 600 800 1000 Over 1200

±4°*; ±2° ±1° ±1° ±1° ±1° ±1°

±6°* ±4° ±2° ±2° ±2° ±2° ±2°

±8°* ±6°* ±4°* ±3° ±3° ±3° ±3°

Period: One transmission Note: Tilt angle changes in 2° increments for asterisk-marked width; 1° increments for all other widths.

Automatic tilt angle (wide) with AUTO TILT key

Range (m) Width 1 Width2 Width3 Period

60, 100, 150 200 300, 400 500, 600 800 1000 Over 1200

±10° ±10° ±10° ±8° ±6° ±4° ±2°

±16° ±16° ±16° ±16° ±12° ±8° ±4°

±20° ±20° ±20° ±20° ±16° ±12° ±6°

Period: One transmission

For example, when the RANGE control, TILT control and AUTO TILT key are set to 800 m, 8° and width (1) respectively, the tilt angle changes at each transmission as follows: 8°→ 9°→ 8°→ 7°→ 8°.

Set tilt angle

Note 1: The AUTO TILT key is inoperative when the target lock function is active or is made active. Auto tilt is available when the target lock is OFF.

Note 2: If the picture set with auto tilt is not visible, disable auto tilt and try again.

2-6

2.4.3 Relation between bottom echo and tilt angle

The figure below illustrates how two schools of fish "a" and "b" are displayed on the screen using three different tilt angles.

Case 1: Tilt angle 30° to 40°: This tilt angle will display the entire bottom since it is captured by the full width of the beam. The school of fish is obscured by the bottom.

Case 2: Tilt angle 10° to 20°: This tilt angle will only display half the bottom since it is captured by only the lower half of the beam. The school of fish is located above the bottom.

Case 3: Tilt angle 0° to 5°: This tilt angle may or may not capture the bottom since the returning bottom echo is weak. The school of fish is located close to the bottom.

2. HORIZONTAL MODE

Case 1

Case 2

Case 3

Case 1

Points to consider

• Normally, a vertically distributed school of fish is a better sonar target than the bottom, because it reflects the transmitted pulse back toward the transducer.

• In case 3, both schools of fish "a" and "b" are presented. Generally speaking, however, midwater schools of fish tend to be larger than schools of fish on the bottom and they are often displayed near the bottom on the display.

• It is difficult to detect bottom fish when they are not distributed vertically.

2-7

2. HORIZONTAL MODE

2.4.4 Tilt angle for surface fish

Sound emitted from the sonar transducer forms an oval-shaped beam with a width of approximately 18° in the vertical direction (vertical beam width at -6 dB). The tilt angle indicates the angle between the centerline of the beam and the horizontal plane. Then, if the tilt angle is set to 0°, the centerline is parallel with the sea surface and one half of the emitted sound goes upward, toward the sea surface.

This causes one half of the emitted sound to be reflected toward the transducer and displayed on the screen as sea surface reflections. When the sea is calm, since the sound is reflected just like a light hitting a mirror at a low incident angle, it propagates away and the sea surface reflections become negligible.

However if the sea is not calm enough, they will become dominant and interfere with observation of wanted echoes. To minimize these sea surface reflections and to search for schools of fish on the surface effectively, the tilt angle is usually set between 8° and 9° so the upper portion of the beam becomes almost parallel with the sea surface. When the sea is rough, the tilt angle is slightly increased to lessen the affect of sea surface reflections.

Tilt angle 0°

Tilt angle 8-9°

2.4.5 Suitable tilt angle

The figure below illustrates the relationship among tilt angle, depth and detection range. Refer to it to find out the suitable tilt angle for a given depth/detection range.

Tilt angle setting: relationship between tilt angle and detection range

100

(200)

20(40)

40(80)

60(120)

80(160)

100(200)

Depth (m)

200

(400)

Sea surface

18°

Sea surface

18°

300

(600)

400

(800)

Range(m)

Tilt 0°

(0°-9°)

Tilt 5°

(0°-14°)

Tilt 15°

(6°-24°)

200(400)

Vertical width of sonar beam

2-8

18°

100 m100 m

31 m

200 m

62 m

In grey

Tilt 10°

(1°-19°)

(-6dB)

300 m

93 m

2. HORIZONTAL MODE

2.5 How to Measure Range and Bearing to a Target

Operate the trackball to place the cursor on the target you want to measure the range and bearing. The range, bearing and depth to the target appear at the upper left corner of the screen.



TRACKBALL DATA



Slant range



Horizontal range



Depth B Relative or True bearing

 

㪙

Cursor

Heading line Own ship mark

Cursor L/L position

㩷㩷㩷㩷㪊㪋°㪌㪍㪅㪎㪏㪐㪥

㪈㪉㪊°㪋㪌㪅㪍㪎㪏㪜

Note 1: Trackball position may also be shown in latitude and longitude. For further details, see page 6-12.

Note 2: The bearing display is available in four formats. See page 6-12.

2.6 How to Eliminate Weak Echoes

Echoes from targets such as bottom and fish return to the transducer in order of distance to them, and when we compare their intensities at the transducer face, those from nearer targets are generally stronger due to little propagation attenuation and little absorption. If these echoes are displayed directly on the screen, the size of the displayed echo from the same school of fish may change with distance, making it difficult to judge the actual size of the school of fish. To overcome this inconvenience use the TVG curve function. This function compensates for propagation loss of sound in water; amplification of echoes on short range is suppressed and gradually increased as range increases so that similar targets are displayed in the similar intensities irrespective of the ranges to them.

TVG curve

Four TVG curves are available and they vary the gain from large to small.

1. Press the MENU/ESC key to open the main menu.

2. Select the [Gain Setting] menu then push the left-click button.

2-9

2. HORIZONTAL MODE

3. Press the H/V/S key to select [H1] or [H2] tab.

4. Select [Sel TVG Curve] then left-click.

5. Select a TVG curve then push the left-click button. The smaller the number, the gentler the gain changes over distance.

6. Select [Quit] on the setting box then push the left-click button.

7. Long-press the MENU/ESC key to close all menus.

The TVG is also used to suppress unwanted echoes (sea surface reflections, cruising noise, etc.) on near ranges. If the selected curve does not provide satisfactory results, try to adjust [TVG-Near], [TVG-Medium] or [TVG-Far], as shown below.

TVG distance and setting

This sonar has three TVG functions, NEAR, MEDIUM and FAR, and they mainly compensate for propagation

Near

Approx. 100 m

Approx. 400 m

Med

loss on short, middle and long ranges respectively, centered

Far

Approx. 800 m

at the ranges shown below. The higher the TVG setting, the greater the amplification of echoes.

1. Press the MENU/ESC key then push the left-click button to open the main menu.

2-10

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select [H1] or [H2] tab.

4. Select [TVG Distance] then push the left-click button.

5. Select [Changeable] then push the left-click button.

Current settings

6. Select [Near], [Meddle] or [Far] as appropriate then push the left-click button to change the setting. Near: Setting range, 50 to 150 m, 10 m increments. Med: Setting range, 300 to 500 m, 20 m increments Far: Setting range, 600 to 1000 m, 40 m increments

7. Select [Quit] on the setting box then push the left-click button. Adjust the TVG level for selected TVG distance as follows.

2. HORIZONTAL MODE

Select item with trackball; push left-click button to adjust.

8. Select [TVG-Near], [TVG-Med] or [TVG-Far] as appropriate then push the leftclick button.

9. Select S or T as appropriate then push the left-click button to change the setting. The setting range is -5 to 5. The higher the setting, the higher the gain. For strong echoes such as sea surface reflections or plankton layer lower the setting by 1 or

10. Select [Quit] on the setting box then push the left-click button.

11. Long-press the MENU/ESC key to close all menus. Note: When a school of fish is located on a long-range setting (about 800 meters)

and is approaching own ship, do as follows:

1) Adjust the tilt to keep the school of fish in the center of the sonar beam, name-

ly, the school of fish is displayed in strongest colors possible.

2) Confirm that the fish echo is displayed in the same color as it approaches.

3) If the color suddenly changes to weaker colors as the fish enters MEDIUM and

NEAR areas, the TVG is improperly set. Adjust the TVG.

4) If this setting produces sea surface reflections and noise, try to remove them

with the AGC (section 2.7.1) and noise limiter (section 2.9.5).

2-11

2. HORIZONTAL MODE

2.7 How to Adjust Strong, Weak Echoes

2.7.1 AGC

The AGC function automatically reduces the receiver gain only against strong echoes such as the bottom or a large school of fish. Since the AGC function does not affect weak echoes, a small school of fish becomes easier to detect. Adjust it so that the AGC works only on bottom reflections. Do not set it too high; weak echoes may be missed.

1. Press the MENU/ESC key to show the main menu.

2. Select the [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select [H1] or [H2].

4. Select [AGC] then push the left-click button to show the setting box.

5. Select S or T then push the left-click box to change the setting.

The setting range is -9 to 9. The higher the setting, the higher the degree of suppression.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

2.7.2 Near AGC

When the water is shallow or heavily sedimented, the unwanted and scattered echoes from close-in may be excessively strong. In this case, a school of fish which is displayed at between 300 and 500 m may disappear gradually when the ship starts approaching the school of fish.

Use the Near AGC feature to suppress this strong echo. Normally set it between 3 and 4, however, this setting depends on the sea condition. Do not set it too high; all echoes (including noise) from near distance may be painted in red.

1. Press the MENU/ESC key to show the main menu.

2. Select the [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select [H1] or [H2] tab.

4. Select [Near AGC] then push the leftclick button to show the setting box.

5. Select S or T then push the left-click button to change the setting. The setting range is -30 to 30. The higher the setting, the stronger the echo level on near range.

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6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

Note: The range which Near AGC covers is set at [Near AGC Distance] in the [Near AGC] menu. The setting range is 20 to 500 m (20 m step). The setting range can be changed. For details, contact your dealer.

2.7.3 2nd AGC

While it is ideal to suppress bottom echoes with the AGC alone, there are some fishing grounds where this is not possible. (The high power sonar has the advantage of longrange detection but this can also be a disadvantage, since weaker echoes may be hidden in strong, unwanted echoes such as the bottom.) If you cannot suppress bottom echoes or sea surface reflections by the AGC function alone, use the 2nd AGC feature. Normally a setting of 1 or 2 is suitable. For especially strong echoes, use a setting of 3 or 4.

1. Press the MENU/ESC key to show the main menu.

2. Select [Gain Setting] then push the left-click box.

3. Press the H/V/S key to select the [H1] or [H2] tab.

4. Select [2nd AGC] then push left-click button.

5. Select [2nd AGC] again then push the left-click button.

2. HORIZONTAL MODE

6. Select S or T then push the left-click button to change the setting.

The setting range is 0 to 12. The higher the setting, the stronger the suppression on long range.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

Other AGC-related items on the [2nd AGC] menu

Distance: Set the start range for the 2nd AGC. The setting range is 0 to 2000 m, in 20

m increments. 2nd AGC is inoperative if the display range is lower than the 2nd AGC start range.

Type: Select the TVG type for 2nd AGC. Select [Normal] for everyday use.

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2. HORIZONTAL MODE

2.7.4 How to shorten pulse length

The pulse length determines the length of the transmission pulse emitted into the water. While a longer pulse is advantageous for long-range sounding, it has the disadvantage of being poor in discrimination of targets, that is, the ability to separate several closely located targets. When searching bottom fish, therefore, it is useful to shorten the pulse length in order to separate fish echoes from bottom reflections.

Note: For search of surface and midwater fish in which bottom reflections are not so strong, use the longest pulse length "9".

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the leftclick button.

3. Press the H/V/S key to select [H1] or [H2] tab.

4. Select [TX Pulse Length] then push the leftclick button.

5. Select S or T then push the left-click button to change the setting. The setting range is 0 to 9. The higher the setting, the longer the pulse length.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

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2. HORIZONTAL MODE

2.8 How to Suppress Bottom and Sea Surface Reflections in Shallow Waters

In shallow fishing grounds with hard or rocky bottom, bottom reflections often interfere with wanted fish echoes and they can not be eliminated sufficiently with the aforementioned TVG and AGC functions, especially when the Tilt is set to a larger angle in order to track schools of fish approaching within 400 m. In such cases try to reduce the output power by adjusting the Tx power instead of turning down the gain. The picture becomes clearer when the output power is reduced rather than when the gain is decreased as illustrated below.

INCORRECT METHOD

CORRECT METHOD

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select [H1] or [H2] tab.

Fish echo

TVG and AGC adjusted with TX POWER kept high

Reduce TX POWER with GAIN kept constant

Fish echo weakened

Fish echo

4. Select [TX Power] then push the left-click button.

5. Select S or T then push the left-click button to change the setting. The setting

range is 0 to 9. The higher the setting the greater the TX power.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

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2. HORIZONTAL MODE

2.9 How to Reject Sonar Interference and Noise

While observing the sonar picture, you may encounter occasional or intermittent noise and interference. These are mostly caused by on-board electronic equipment, engine or propeller noise, or electrical noise from other sonars being operated nearby.

2.9.1 How to identify the noise source

To eliminate noise effectively, you should first identify the noise source as follows:

1. Stop transmission on the [Test] menu; turn off [TX]. Turn on the power of all onboard equipment one by one while observing the picture. If noise appears on the sonar display, that equipment is emitting noise. Check the offending equipment's ground and installation.

2. Run the boat at various speeds to check if the noise is speed dependent.

If neither of the above two steps has effect on the picture, adjust one of the following:

2.9.2 Change TX interval

When other sonars nearby are operating the same transmission interval as that of own ship's sonar, rings of interference appears on the display.

To remove the rings from the screen, do the following:

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select [H1] or [H2] tab.

4. Select [TX Interval] then left-click.

5. Select S or T then push the left-click button to change the setting. The setting range is 0 to 9. The higher the setting, the longer the TX interval.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

Note: When you operate the sonar with the following settings in shallow water, the sea clutter from the previous transmission may appear in near range. To suppress the clutter, reduce the [TX Interval] by 2 or 3.

Tx interval high Tx interval lowered

Interference

2-16

• Range: 60 to 200 m

• TX Pulse setting: 9

2.9.3 Interference rejector

This control is similar to the interference rejector on echo sounders and radars. It is effective for rejecting random noise and sea surface reflections in rough sea conditions. Set it so that noise is just eliminated. Do not use an unnecessarily high setting since it may also reject small, wanted echoes.

1. Press the MENU/ESC key to show the main menu.

2. Select [Picture Setting] then push the leftclick button.

3. Press the H/V/S key to select the [H1] or [H2] tab.

4. Select [Int Reject] then push the left-click button.

5. Select S or T then push the left-click button to change the setting. The setting range is 0 to 3. The higher the setting, the greater the degree of interference rejection.

6. Select [Quit] on the setting box then push the left-click button to close the box.

2. HORIZONTAL MODE

7. Long-press the MENU/ESC key to close all menus.

2.9.4 Shift TX frequency

If the interference cannot be suppressed by the interference rejector or change in TX interval, change the TX frequency from the [Frequency] menu.

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select the [H1] or [H2] tab.

4. Select [Freq Shift] then push the left-click button.

5. Select S or T then push the left-click button to change the setting. The setting range is -30 to 30.

6. Select the [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

Note: In some cases, the TX frequency can not be changed because of operating bandwidth. In this case the TX frequency setting is grayed.

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2. HORIZONTAL MODE

2.9.5 Noise limiter

Weak, unwanted reflections, colored light-blue or green, appear when the water is dirty, plankton layers exists, or due to ship’s noise. The noise limiter can reduce the effects of these unwanted reflections. Raising the setting causes unwanted reflections to be displayed in colors of blue to background color.

1. Press the MENU/ESC key to show the main menu.

2. Select [Display Setting] then push the left-click button.

3. Press H/V/S key to select the [H1] or [H2] tab.

4. Select [Noise Limiter] then push the left-click button.

5. Select S or T; then push left-click button to change setting. The setting range is

0 to 15. The higher the setting, the higher the degree of the suppression.

6. Select [Quit] then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

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2.9.6 Reverberation

You may select the length of reverberation for the echo signal, with [Reverberation] on the [TX/RX Setting] (H1 or H2 tab). The setting range is 0 to 5. The larger the setting, the lower the reverberation effects. Set the length of reverberation properly to make it easier to see the echo signal.

2.9.7 Echo average

[Echo Average] (H1 or H2 tab) on the [Picture Setting] menu adjusts echo afterglow the amount of time an echo signal remains on the screen. This feature can be useful for watching echo movement. The setting range is 0 to 11. Setting between 1 and 7: Echoes are gradually displayed and afterglow remains on the screen longer as the setting is increased.Setting between 8 and 11: Echoes are quickly displayed and afterglow remains on the screen longer as the setting is increased.

2.9.8 Reference bearing in frequency shift

The reference bearing in frequency shift can be changed to avoid sonar interference and noise. If noise or interference appears at a specific bearing, change the value of the [Freq/Bearing Set] in the [TX/RX Setting] (H1 or H2 tab) menu. The setting range is 0 to 31 (0° to 348.75°) and the default setting is 16 (180°).

2. HORIZONTAL MODE

Note: [Freq/Bearing Set] is valid when [Sidelobe Sup] is selected to other than 0°.

2.9.9 How to suppress the gain of bottom echo

Stationary echoes such as bottom echo, plankton echo, etc., may be suppressed with [Bottom Suppress] in [TX/RX Setting] (H1 or H2 tab). Moving echoes such as fish school are not affected by this setting. The setting range is 0 to 10. The higher the setting, the greater the suppression level of the bottom echoes.

Note: Do not use an unnecessarily high setting since it may also suppress slow-moving fish echoes.

2.10 How to Adjust Beamwidth

The width of the horizontal beam can be adjusted from the [Beam Width] menu.

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select the [H1] or [H2] tab.

4. Select [Beam Width] then push the left-click button.

5. Select [Beam] then push the left-click button.

6. Select [S] (raise setting) or [T] (lower setting) to adjust the beamwidth. The setting range is -4 to 30 and AR.

-4 to -1: Raise the setting to sharpen the vertical beamwidth.

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2. HORIZONTAL MODE

0 to 4: Rase the setting to sharpen both the horizontal and vertical beamwidth. 5: Get the sharpest horizontal beam. 6 to 30: Rase the setting to sharpen the horizontal beam in five steps while chang-

ing the vertical beam width. AR (Automatic Range): The horizontal beamwidth is automatically adjusted according to the selected range.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

2.11 How to Track a School of Fish

The target lock function automatically tracks a school of fish so you will not lose sight of it on the display. Two types of target lock are available: position tracking and tracking of school of fish. Select one from the menu as shown in the procedure that follows. The default setting is tracking of school of fish. Speed and bearing data are required. The FSV-35 can not track a school of fish if the level of the echo is too weak.

Track of school of fish*

* [FISH] mode

TARGET LOCK MARK

One target lock mark is shown. For the Horizontal 2 display, the mark is shown on the applicable display. The target lock mark does not appear on the displays where it can not be inscribed.

Vector Length: Speed of movement Direction: Direction of movement

2.11.1 How to select the target lock mode

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select [Initial Setting] then push the left-click button.

4. Select [Changeable] then push the left-click button.

5. Select [Target Lock] then push the left-click button.

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6. Select [Tracking Method] then push the left-click button.

7. Select [Fish] or [Target Mark] then push the left-click button. See section 2.11.2 and section 2.11.3.

8. Select [Quit] on the setting box then push the left-click button to close the box.

9. Long-press the MENU/ESC key to close all menus.

2.11.2 Fish mode

The automatic echo target lock function automatically tracks the operator-selected school of fish. When [TILT INTERLOCK] on the [TARGET LOCK] menu (previous page) is set to [TILT & RANGE], and the tracked school of fish goes out of the zone in the range direction, the range and tilt are automatically controlled according to the position of the school of fish.

1. Select [Fish] in the procedure in section 2.11.1.

2. On the horizontal display, use the trackball to select the school of fish to track.

3. Press the TARGET LOCK key. The target lock mark (white) with vector is put on the school of fish. The vector shows the speed and direction of movement of the school of fish. The tip of the vector is the estimated position of the school of fish when the vector time elapses. The target lock mark appears on the vertical display, however the vector is not shown. If the target is lost, the target lock mark changes to red color and the tracking mode changes to position mode (see next section) at that position. When the sonar detects and tracks the target again, the FISH mode is restored.

2. HORIZONTAL MODE

Target lock mark

Track of school of fish (Turned ON or OFF on Mark Display menu.)

TARGET LOCK DATA

2975m (Horizontal range)

153m (Depth)

12.3kn (Speed)

Vector (Heading data required)

256° (Course)

4. To disable the target lock, press the TARGET LOCK key.

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2. HORIZONTAL MODE

2.11.3 Target mark mode

This mode tracks a stationary position (such as a reef) using position data fed from a navigator.

AB CD

Depth

1. Select [Target Mark] in the procedure in section 2.11.1.

2. On the horizontal display, use the trackball to select the location to track.

3. Press the TARGET LOCK key. Tilt, range and vertical bearing are automatically adjusted to track the location. Using the figure above as an example, the target lock mark is placed on location E. Then, the equipment remembers the location of E and automatically changes the tilt angle as the ship moves from position A through D. As long as the school of fish E is stationary its echo is kept displayed on the screen.

4. To disable the target lock, press the TARGET LOCK key.

2.11.4 Target lock menu description

Target lock functions not previously mentioned are described below.

Tilt Interlock: Provides automatic change of tilt angle and range or tilt angle in target lock. (Setting options: [OFF], [Tilt], [Tilt&Range])

Mark Interlock: Turns numeric/graphic data displays ON/OFF in target lock. [Off] turns off both the estimate mark 1, 2 histogram and data display. [Estimate Mark] enables the estimate mark 1, 2 histogram. [Est & Fish Info] enables the both the estimate mark 1, 2 histogram and data display.

Tracking Data: Selects which target lock tracking data to use, horizontal or both horizontal and vertical.

Threshold: Selects the minimum signal level to use in target lock tracking. The setting range is 1 to 30. Target lock tracks a target whose signal level is greater than set here.

Bottom Threshold: When a target is judged as a bottom echo, raise this setting to differentiate bottom from target. The setting range is 0 to 5.

Target Speed Limit: Sets maximum fish speed to track. The setting range is 1 kn to 15 kn.

2-22

Smoothing: Sets smoothing rate for fish speed data. The higher the setting, the

smoother the position of the target lock target. Avoid oversmoothing, to prevent delay in tracking when own ship or target moves suddenly. The setting range is 0.0 to 1.0.

Target SPD Update: Sets the interval at which fish speed data is updated. The intervals are 15, 30, 45 and 60 seconds.

Target Lock Window: Selects the size of target lock detection area; normal, large, largest. (The area is not indicated on the screen.)

Dimension Setup: Sets dimension constant for calculation of weight (ton) of school of fish from the dimension of the school of fish.

Volume Setup: Sets volume constant for calculation of weight (ton) of school of fish volume.

2.12 Presentation Mode

2.12.1 Presentation mode description

This sonar has four presentation modes, head-up, north-up, course-up and true motion. Select one with [Presentation Mode] in the [Others] - [Display Setting] menu.

2. HORIZONTAL MODE

㪜㪆㪪

㪥

Head-up

N N

North-up True Motion

Course-up

Head-up: The display is oriented toward ship’s heading. The heading direction appears at the top of the display. Own ship position is fixed at the screen center. Echoes from fish and the bottom move on the screen relative to own ship’s movement. This mode is useful for general use.

North-up: The display is oriented so North is at the top of the screen. Own ship position is fixed at the screen center and own ship mark pivots with ship’s movement. Echoes from fish and the bottom move on the screen relative to own ship’s movement.

Course-up: The display is oriented according to course. Own ship position is fixed at the screen center. Echoes from fish and the bottom move on the screen relative to own ship’s movement. Targets are displayed at ship’s bow.

True Motion: Stationary objects are fixed and own ship and fish echoes move on the display in accordance with their true courses and speeds. Thus you can observe own ship and fish echo movement with respect to the bottom. This mode requires speed and heading data. When own ship mark reaches an edge of the off-center effective area it is automatically returned to the screen center as below.

Offcenter effective area

(a) Own ship mark reaches an edge of offcenter effective area

(b) Own ship mark is automatically returned to screen center

Automatic return of own ship mark in true motion

2-23

2. HORIZONTAL MODE

2.12.2 How to select a presentation mode

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select [Display Setting] then push the left-click button.

4. Select [Presentation Mode] then push the left-click button.

5. Select desired mode then push the left-click button.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

Note: The true motion display range may be set to 1.3 to 1.6 times the range with [TM Disp Range] on the [Display Setting] menu.

2.13 How to Detect Schools of Fish Aurally

Sometimes you may be preoccupied with other tasks and unable to concentrate on watching the sonar picture. In such cases it would be a good choice to use the audio function. This function enables you to monitor echoes from schools of fish and bottom through the external speaker.

2.13.1 How to set the bearing

In the default setting, the audio function is on and the audio sector is 30°.

1. Operate the trackball to place the cursor on the direction you want to monitor through the speaker.

2. Press the R/B AUDIO key.

The monitoring section is set on the bearing selected, in a 30°, 60°, 90°, 180° or 330° sector centering the audio bearing mark. Echoes are monitored through the speaker.

Monitoring section

Audio bearing mark

Range marker

* In target lock, the audio bearing mark follows tracked target.

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R 400m B 45°

Data for range and audio bearing marks

Note: To erase the range mark and the data at the bottom of the screen, put the cursor near own ship mark and press the R/B AUDIO key. Note that the audio bearing is erased when [Audio] on the [Alarm & Audio] menu is turned off.

2.13.2 How to select the audio sector

Select the audio sector as follows. Note that you cannot see this sector on the display.

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select [Alarm & Audio] then push the left-click button.

2. HORIZONTAL MODE

4. Select [Audio Sector] then push the left click button.

5. Select desired sector then push the left-click.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

2.13.3 Automatic training

You may automatically scan the audio sector and audio bearing mark in the sector of ±12°, ±24° or ±36° as shown below.

1. First activate the range and audio bearing marks with the R/B AUDIO key.

2. While pressing and holding down the AUTO TRAIN key, press the R/B AUDIO key to select desired auto train sector among ±12°, ±24° or ±36°, or OFF to disable automatic training. Watch the auto train mark to know the currently selected sector. The chosen sector appears in large characters for five seconds at the top of the screen.

Auto train mark

Note: Select [Off] at step 2 to stop the training.

Auto train secto

Audio bearing mark

2-25

2. HORIZONTAL MODE

2.13.4 Reverberation for audio signal

You may select the length of reverberation of the audio signal, with [Reverberation] on the [Alarm & Audio] menu. The larger the value the longer the reverberation, which makes it easier to hear the audio signal. The setting range is 0 to 9 and the default setting is 0.

2.14 Fish Alarm

The fish alarm sounds the aural alarm when a fish echo above a preset strength enters the operator-set alarm zone.

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select [Alarm & Audio] then push the left-click button.

4. Select [Fish Alarm] then push the left-click button.

5. Select [ON] then push the left-click button.

6. Select [Quit] from the setting box then left-click to close the box.

7. Select [Alarm Zone] then push the left-click button.

8. Operate the trackball to place the cursor on the starting point of the alarm zone.

9. Push the left-click button.

10. Rotate the trackball clockwise to select the ending point. The display paints a fanshaped alarm zone. The alarm range appears on the display as shown below.

<< Alarm Zone >>

Move trackball cursor to origin of alarm zone and left click. Press [R/B] key or right click to cancel.

<< Alarm Zone >>

Move cursor to the end of alarm range and left click. Press [R/B] key or right click to cancel.

Fish alarm range

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11. Push the left-click button.

12. Long-press the MENU/ESC key to close all menus. When a fish echo enters the alarm area the buzzer sounds.

Note 1: There must be at least 3° difference between the starting and ending points to get a fan-shaped alarm zone as shown in (a) and (b) below. Otherwise, the unit paints a 360° alarm zone as in (c) where there is less than 3° between the starting and ending points.

2. HORIZONTAL MODE

More than 3°

(a) (b) (c)

Note 2: The echo strength which triggers the alarm can be set with [Alarm Level] on the [Alarm & Audio] menu. The setting range is 0 to 30. This value corresponds with the 32-echo colors.

To disable the alarm, select [OFF] at the step 5.

Within 3°

2.15 How to Relocate a School of Fish

The offcenter feature relocates a school of fish.

1. Operate the trackball to place the cursor on the position where you want to relocate the own ship mark.

2. Press the OFF CENTER key.

3. To move the own ship mark back to the screen center, press the OFF CENTER key again.

School of fish

Press OFF CENTER key

Own ship mark

Set cursor here, for example,

Note: You can also activate the offcenter feature by long-pressing the left-click button. To restore the normal display, long-press the right-click button.

Own ship mark moves to trackball position,

2.16 How to Compare Concentration of School of Fish

2.16.1 How to compare with the fish estimate mark

You can get an estimate of the volume of two schools of fish by using the two ESTIMATE keys as follows:

2-27

2. HORIZONTAL MODE

1. Operate the trackball to place the cursor on a school of fish, and then press the ESTIMATE 1 key. The estimate mark 1 appears on the school of fish. Relative volume is shown by a figure between 0 and 100, below the estimate mark. When the area inside the mark is filled in reddish brown, volume figure is said to be 100. When the estimate mark is entered, a graph is shown at the histogram on the numeric/ graphic data display.

2. Operate the trackball to place the cursor on another school of fish, and then press the ESTIMATE 2 key. Compare estimate figures for each school of fish by observing estimate mark data and the fish histogram.

3. To turn off the estimate marks press their respective keys.

Estimate mark 2

Estimate mark 1

North mark

Relative fish volume

Note: The fish school mark and event mark 1 can be entered with the fish estimate mark. For details, contact your dealer.

Fish histogram

The fish histogram shows, in graph form, signal strength distribution for the school(s) of fish marked with an estimate mark on the horizontal displays. The histogram display for each of those displays will be different since the calculation method is different. This data appears only when an estimate mark is active. When two estimate marks are active, histograms are displayed one on top of the other as below. The horizontal axis shows signal strength in 16 colors, and the vertical axis shows the concentration of a school of fish inside the fish estimate mark. For the fish estimate mark inscribed on the horizontal display the graph shows the average movement in five scans, to increase accuracy.

Fish estimate mark source

2 1

Scan1

Fish estimate mark no.

Estimate mark 1 or estimate mark 2 displayed

Scan1

Scan2

Both estimate marks displayed

Fish estimate mark source

Note: The histogram display is redrawn five transmissions after a fish estimate mark is erased and another mark of the same number is entered soon after.

2-28

2.16.2 How to compare with the circle cursor

You can get an estimate of the volume of two schools of fish with the circle cursor as follows:

1. Push the scrollwheel to show the [Select Mark] window.

Selected mark name

Scan mode in which mark can be entered

2. Select the circle cursor and push the left-click button. The [Select Mark] window disappears, then the cursor is changed to the circle cursor.

2. HORIZONTAL MODE

Circle cursor

㪏㪊㫄

Diameter of the circle cursor

3. Place the circle cursor on a school of fish.

4. Rotate the scrollwheel to adjust the size of the circle cursor. Set the school of fish in the circle cursor to estimate correctly. The diameter of the circle cursor is displayed below the circle cursor.

5. Place the circle cursor on another school of fish to estimate the volume. You can compare the volume of two schools of fish with the diameter of the school of fish.

6. Push the right-click to quit the measurement. The circle cursor is changed to the normal cursor.

Note: The event mark 1, event mark 2, fish mark, target lock mark, estimate mark 1, and estimate mark 2 can be entered from the [Select Mark] window. Push the left-click button to enter the mark selected on [Select Mark] window.

2-29

2. HORIZONTAL MODE

2.17 How to Measure the Speed of a School of Fish

To ensure a good haul, it is important to estimate the direction and speed of the school of fish before shooting the net. You can do this with the FISH key. With tidal current data and fish speed data, you can determine the timing of the net shooting more efficiently. This function requires speed and heading data.

2.17.1 How to measure the speed of a school of fish

1. Place the cursor on the center of a school of fish then press the FISH key or push the left-click button. The latest fish mark ( ) appears on the school of fish.

2. Wait until the target fish moves a reasonable distance from the latest fish mark.

3. Place the cursor on the same school of fish selected in step 1 then press the FISH key. The latest fish mark appears on the target, the 2nd latest fish mark ( ) appears on the location selected at step 1 and any earlier fish marks are shown with an X. The distance between the two fish marks and speed, course, and bearing of the school of fish appear at the bottom right-hand corner of the horizontal display area.

Latest fish mark

Place the cursor on a school of fish and press [FISH] key.

Note 1: The time and distance between each press of the FISH key should be as long as possible to increase accuracy of measurement. For best results, repeat the procedure two or three times.

Note 2: Each time the FISH key is pressed the latest fish mark and ship's speed mark change in the sequence shown below. A maximum of 20 fish marks can be entered. When you enter more than 20, the earliest fish mark is erased.

WAIT A FEW MINUTES

2nd latest fish mark

Place the cursor on the school of fish’s current location and press [FISH] key again.

This data is the latest fish mark data.

Latest fish mark

Earlier fish mark (Max. 18)

FISH MOVEMENT DATA

(Distance moved)

2975m

S 12.3kn (Speed) CB256° (Course)

(Horizontal range to fish mark)

153m (Depth)

(Bearing)

235

2-30

[FISH]

key pressed once

twice

three times

four times

2.17.2 How to delete fish marks

Fish marks can be deleted individually with the DELETE MARK key or by earliest entry from the menu.

How to delete fish marks with the DELETE MARK key

Use the trackball to place the cursor on the fish mark you want to erase. The color of the fish mark changes from white to red when the fish mark is correctly selected. Press the DELETE MARK key to delete the fish mark.

How to delete fish marks from the menu

1. Push the right-click button on the numeric/graphic data display to show the popup menu.

2. Select [Erase Marks] then push the left-click button.

2. HORIZONTAL MODE

3. Select [Fish Mark] then push the left-click button. Each push of the left-click button deletes the earliest fish mark.

4. Long-press the MENU/ESC key to close all menus.

Note: The default function of the F5 key deletes the earliest fish mark.

2-31

2. HORIZONTAL MODE

2.18 Event Mark, Own Ship Position Mark

The event mark is useful for finding the horizontal range, depth and bearing to a location some distance from current position. 20 such marks may be inscribed on the horizontal display. This function requires speed and heading data.

There are two types of event marks, latest event mark 1 ( ) and event mark 2 ( ).

Each time an event mark is entered the latest event mark appears at the cursor posi-

tion and all other event marks are shown by marks and numbered in sequential order. When the memory capacity for event marks is reached the earliest event mark is automatically erased to make room for the latest.

2.18.1 How to enter an event mark

1. Set the cursor where you want to enter an event mark.

2. Press an EVENT key. The horizontal range, depth and bearing to the event mark appear at the bottom left corner of the horizontal display area. The event mark 1 can be entered by pushing the right-click button.

234m: Horizontal range (m) from own ship mark 19m: Present depth (m) to mark (35m): Depth (m) of mark at moment EVENT key is pressed. B 265°: Present bearing (degree)

Bottom left-hand corner of the screen

Ex. Indications when the EVENT key is pressed

With speed and heading data the mark follows own ship’s movements. In the True Motion mode, the event mark is stationary. When the tilt angle is changed mark position changes with horizontal range. Note however that the mark’s position does not change when automatic tilt is active; the tilt center angle is used to position the mark.

Plotting an event mark on the display is equivalent to dropping a buoy with an anchoring chain that extends from surface to bottom. The buoy is fixed at its geographical location, but the marker on the display moves to a point where the present beam plane intersects the anchor chain of the buoy as the ship moves or the tilt angle is changed. This can be said about marks as well such as fish mark and cursor.

2-32

You observe picture from direction of mark.

(35)

Stored when EVENT key is pressed.

2. HORIZONTAL MODE

2.18.2 How to enter an own ship position mark

Place the cursor close to the center of the own ship mark (U) and press the EVENT key. Ten own ship position marks may be inscribed. When the capacity for own ship position marks is reached the earliest own ship position mark is automatically erased.

Note: The SHOOT key can enter the own ship position mark. Set [Event Key] to [Shoot] on the [Mark Display] menu.

2.18.3 How to erase an event mark, own ship position mark

Event marks and own ship position marks can be deleted individually with the DELETE MARK key or by earliest entry from the menu.

Delete an event mark, own ship position mark with MARK DELETE key

Use the trackball to place the cursor on the event mark or own ship position mark you want to erase. The color of the mark changes from white to red when the mark is correctly selected. Press the DELETE MARK key to delete the mark.

Delete an event mark, own ship position mark from the menu

1. Push the right-click button on the numeric/graphic data display to show the popup menu.

2. Select [Erase Marks] then push the left-click button.

3. Select [Event Mark1], [Event Mark2] or [Own Ship Pos Mark] then push the leftclick button. Each push of the left-click button deletes the oldest event mark or own ship mark.

4. Long-press the MENU/ESC key to close all menus.

Note: The default function of the F3 (for event mark 1), F4 (for event mark 2) and F6 (own ship position) keys delete the oldest event mark or own ship mark.

2-33

2. HORIZONTAL MODE

2.19 Net Course Mark

Before shooting the net, decide the shoot timing considering tide direction, distance to the school of fish and moving direction of the school of fish. Use the net course mark as a guide to decide the timing. This function requires speed and heading data.

How to enter the net course mark

1. Press the MENU/ESC key to show the main menu.

2. Select [Others] then push the left-click button.

3. Select the [Display Setting] then push the left-click button.

4. Select the [Net Course Mark] then push the left-click button.

Net course mark

<<Set net course mark>>

Move trackball cursor to net course mark position and left click. Press R/B key to cancel.

5. Use the trackball to position the net course mark, which is shown by a dashed circle.

6. Push the left-click button to set, and the dashed circle changes to a solid one.

7. Long-press the MENU/ESC key to close all menus.

Note 1: To delete the net course mark select [Delete] at step 4.

Note 2: The default function of the F10 key deletes the oldest net course mark.

2-34

2.20 Net Behavior

㪈

㪉

With connection of a net sonde, you can observe net behavior after the throwing of the net. Accurate depiction of net sonde position depends on proper setting of the distances between net sonde transmitters. You can set those distances on the main menu[Others] - [Initial Setting] - [Net Sonde Setting] menu. This function requires speed and heading data.

Note: To enable this feature, set [Event Key] to [Event] in the [Mark Display] menu, then do the following:

1. Press the SHOOT key just upon throwing the net into the water. The following actions occur:

• Net shoot mark ( ) appears at own ship position.

• Net shoot data appears at top of the display.

• Net sonde mark ( ) is inscribed.

• Net depth data is displayed.

2. To erase the net sonde mark and associated data, press the SHOOT key again.

1 2

2. HORIZONTAL MODE

㪥

㪊㪌㪇

-Range

-Erapsed time

㪈㪇

㪉㪇

Net sonde

data

B 296°

㪉㪐㪇

㪉㪏㪇

202m 193m 59m

㪊㪇㪇

Net shoot data

0.53NM 5:32

㪊㪉㪇

㪊㪈㪇

㪊㪋㪇

㪊㪊㪇

Net shoot mark

Current mark*

㪮

㪉㪍㪇

㪉㪌㪇

㪉㪋㪇

㪉㪊㪇

㪉㪉㪇

㪉㪈㪇

㪉㪇㪇

㪉

㪈

2000

㪈㪐㪇

㪪

㪈㪍㪇

㪈㪎㪇

Note: To turn the current mark on/off, see page 6-13.

㪥㪄㪬㪧

㪟㩷㪩㪊㪇㪇㫄

㪘㪬㪫㪦

㪊㪇

㪋㪇

㪞㪈㪅㩷㪇㪧㩷㩷㪏

㪌㪇

㪈㪊㪇

㪈㪋㪇

㪈㪌㪇

㪈㪎°㪫

㩿㪉㪈°㪀

㪍㪇

㪈㪉㪇

㪎㪇

㪏㪇

㪜

㪈㪇㪇

㪈㪈㪇

⦁㚂ᣇ૏ 321㫦

㪟㪜㪘㪛㪠㪥㪞㩷㩷㩷㩷㩷㩷㩷㩷

㊎〝 335㫦

㪪㪟㪠㪧㩷㪚㪦㪬㪩㪪㪜㩷㩷㩷㩷㩷㩷㩷㩷

⦁ㅦ 12.5kt

⥄⦁૏⟎[DGPS] (000.000)

㪣㪘㪫㪆㪣㪦㪥㪞㪲㪛㪞㪧㪪㪴

32°52.150N

㩷㩷㪊㪉°㪌㪉㪅㪈㪌㪇㪥

132°12.150E

㪈㪉㪅㪈㪌㪇㪜

㪈㪊㪉

NUMERIC

᳓㩷㩷㩷㩷󰵴 321m

㪛㪜㪧㪫㪟

㪊㪉㪈㫄

DATA

ầ㩷㩷㩷㩷ᵹ

㪮㪘㪫㪜㪩㩷㪚㪬㪩㪩㪜㪥㪫

DISPLAY

C1 1.2kt 342°

㪚㪈㪈㪅㪉㫂㫋㪊㪋㪉

C2 0.8kt 298°

C2 0.8kt 298

C3 0.4kt 256°

C3 0.4kt 256

✂㩷󰵴㩷ᐲ

NET DEPTH

S1 134m

S2 178m

S3 213m

NET DEPTH

䊍䉴䊃䉫䊤䊛

S1 䇭178m

㪈㪪㪺㪸㫅

S2 䇭134m S3 䇭150m

WATER CURRENT*

᳓㩷㩷㩷󰶘

10.3°C

C1 1.2kt 342° C2 0.8kt 298°

㪈㪉

C3 0.4kt 㪉㪌㪍°

㪥㪜㪫㩷㪛㪜㪧㪫㪟㪁

㪈㪇

㪪㪈㪈㪊㪋㫄㪪㪉㪈㪎㪏㫄

㪏

㪪㪊㪉㪈㪊㫄

㪊㪉㪈

㪊㪊㪌

Net

depth

㪇㪈㪇㪉㪇㫄㫀㫅

2-35

2. HORIZONTAL MODE

2.21 Menu Items Descriptions

This section presents an overview of the horizontal display related menus not previously described.

Display Setting menu

Gain Offset: Adjusts gain level. If the GAIN control on the front panel does not provide

satisfactory gain adjustment, enter an offset here. The setting range is 0 to 12.

Signal Level: Contaminated water or reflections from plankton may be painted on the screen in green or light-blue. These echoes may be erased in order of strength. The setting range is 0 to 15; 0 corresponds to the weakest color.

Color: Selects color arrangement to use. The default setting is Color 1 to 4.

H-Scan Color1 (or 2 to 4) Setting: Customizes colors. See the procedure on the next

page.

2-36

2. HORIZONTAL MODE

1. Operate the trackball to select color then push the left-click button to show the color bar.

Select color with trackball.

COL: Cycles through default colors. HUE: Adjusts color tint (Setting range: 0-100(%)). SAT (Saturation): Adjusts color vividness (Setting range: 0-100(%)). LUM (Luminescence): Adjusts color brightness (Setting range: 0-100(%)).

2. Select S or T for COL, HUE, SAT or LUM.

3. Push the left-click button several times to set.

4. Repeat steps 2 and 3 to complete other items.

5. Select [Quit] then push the left-click button.

6. Repeat steps 1 through 5 to set other colors.

7. Select [Apply] then push the left-click button.

Note: To restore default color setting, select [Default] on the window then push the left-click button.

H-Scan Color Curve Setting: Adjusts reflected echo strength versus echo color level for currently selected color response number. To adjust the curve, place the trackball at the point desired then push the left-click button. On the horizontal axis input level relative value is shown in the range from 0 to 100%. The setting range for input level is 0-100% in increments of 10% and output level is 0-100% in any value. Select [Apply] then push the left-click button.

2-37

2. HORIZONTAL MODE

To set input level versus output level, use the trackball to place the cursor on location desired and push the left-click button.

Note: To restore default color response, select [Default] on the window then push the left-click button.

Picture Setting menu

Smooth Echo RNG: Selects echo smoothing level in the range direction. The setting

range is 0 to 7. The higher the setting, the greater the smoothing.

Smooth Echo CIR: Selects echo smoothing level in the circular direction. The setting range is 0 to 5. The higher the setting, the greater the smoothing.

2-38

2. HORIZONTAL MODE

2.22 How to Interpret the Horizontal Display

2.22.1 Bottom and school of fish echoes

Bottom echoes

When the tilt angle is changed, the bottom echo illustrated below will appear on the display. When the tilt is decreased (toward 0°), the bottom trace becomes wider and weaker. By observing the bottom condition on the display, the skipper can prevent net damage.

(A) Flat bottom Tilt angle: 10° to 15°

Decreased tilt angle Only half of vertical beam width captures the bottom.

(B) Flat bottom Tilt angle: 20° or more

Bottom is displayed narrower and in stronger colors when compared to (A).

Shallow bottom is displayed in a strong color and with a short tail.

Bottom

The deeper, sloping bottom echo is displayed in a weak color and with a long tail.

2-39

2. HORIZONTAL MODE

School of fish

A school of fish appear as a mass of echoes on the screen. By this display pattern, the density of the school on the sonar beam can be found. To find distribution and center point of a school of fish, try several different tilt angles.

(A) Sea surface fish Tilt angle: 0° to 10°

School of fish

Sea surface reflections

(B) Midwater, bottom fish Tilt angle: 30° or more Fish echo which appears before bottom can be detected.

Bottom echo not displayed because of decreased tilt angle. Sea surface reflections are present.

Tilt angle: 0° to 20° Fish echo which appears together with or after bottom can be detected.

Bottom

School of fish

Large midwater fish school is present.

School of fish

Bottom

When the tilt angle is shallow, the reflection echo from bottom is weak and the fish echo which appears from bottom is easy to find.

2-40

2.22.2 Unnecessary echoes

Sea surface reflections

To reduce sea surface reflections, set the tilt angle to 4° or higher, so the upper edge of the sonar beam does not hit the sea surface, or adjust TVG. When a decreased tilt is used, sea surface reflections cover a large area as illustrated below.

2. HORIZONTAL MODE

Tilt: 0

Tilt: 4°-5

Sea surface

Tilt angle indication

Sea surface reflections

Wake

A wake produced by own ship or another ship can be a strong reflecting object when a decreased tilt angle is used. As the wake appears as a thick continuous line, it can be easily distinguished from a school of fish. A wake contains many air bubbles which attenuate ultrasonic energy, making it difficult to sound beyond the wake.

Other ship

Own ship

Own ship's screw noise

Wake produced by other ship

Own ship's screw noise

Own ship's wake (produced when own ship turned)

2-41

2. HORIZONTAL MODE

Sidelobe echoes (false echoes

An ultrasonic wave is emitted only in the direction set by the TILT control, however there are some emissions outside the main beam. These are called sidelobes. The energy of the sidelobe is fairly weak but when the water is comparatively shallow and the bottom is rocky and hard, strong signals are detected by the sidelobe. These are represented on the display as a false echo as shown below.

Mainlobe echo

Sidelobe

Sidelobe echo

Mainlobe

The bottom echo detected by sidelobe appears at a certain tilt angle when the sidelobe points vertically. Also, poor soundome projection may result in a similar false echo.

Noise and interference

When the fishing ground is crowded with many fishing boats, the sonar is subject to interference from ultrasonic equipment (echo sounder or sonar) on other boats as well as those on own ship.

For instance, interference from the sonar operated on other boats will show itself on the display as in (A) in the figure below. This interference can be suppressed by changing the TX interval, with [TX Interval] on the [H-Scan Setting] menu. Noise from marine life shows itself on the displays as in (B) in the figure below. This type of noise can be suppressed with the interference rejector on the [Picture Setting] menu.

2-42

School of fish

Bottom

Ring of interference

(A) Interference from other sonar (yours or others)

(B) Interference from marine life

3. VERTICAL MODE

3.1 Basic Operating Procedure

Lower transducer.

: Mid protrusion 䋺Full protrusion

Press appropriate key.

Turn on power.

Set vertical bearing mark

to display in vertical display.

MENU/

ESC

䌆1

䌆2

AUTO

TILT

USER PROG

䌆3

DISP

MODE

SHOOT

䌆4

GAIN

䌆5

V1/S V2

AUTO

CENTER

TRAIN

R/B

DELETE

AUDIO

MARK

H/V/S

䌆7

䌆6

Press to choose the screen (horizontal or vertical)

EVENT

OFF

ESTIMATE

TARG ET LOCK

RANGE

䌆8

Select range.

䌆9

to adjust gain and range.

Adjust gain.

EVENT

ESTI-

MATE

FISH

䌆10

Select a vertical display.

Control panel

3-1

3. VERTICAL MODE

3.2 How the Vertical Mode Works

3.2.1 Overview

The vertical mode shows a vertical section of the horizontal display selected with the vertical bearing mark. The figure below illustrates the concept of the vertical mode, in comparison with the horizontal mode. The vertical mode helps you keep fast moving fish such as bonito and tuna within the sonar beam.

Horizontal Mode Vertical Mode

Detection aspect, view from top

Detection aspect, view from side

3.2.2 How to set the vertical display

1. Use the trackball to place the cursor at the desired location in the horizontal display.

2. Press the V1/S or V2 key.

For example, press the V1/S key. Then, the Vertical 1 display appears, and the vertical bearing marker is displayed in the horizontal display, with V at the tip of the marker as shown on page 3-3. If both vertical displays are activated 1 or 2 is inscribed at the tip of a vertical bearing marker.

Note: The TILT control functions as a bearing setting lever for the vertical display1 in the conditions mentioned below. The bearing of the vertical display1 changes clockwise when the TILT control is pressed upward and counterclockwise when pressed downward, changing in increments of two degrees.

• The item [Tilt Lever] in the [Display Setting] menu is set to [TILT & V1].

• The vertical screen is chosen in the vertical mode.

3-2

3.3 Vertical Indications and Marks

3.3.1 Typical vertical display

The vertical mode provides a vertical section of the horizontal picture. You may show the display on the right or left side of the screen in case of the vertical 1 mode. An expansion mode is available to enlarge the picture. To display the vertical mode, press the DISP MODE key and choose V1 or V1 & V2.The example below shows the V1 mode. You can move and change the window size of the vertical display 1 by drag and drop.

Trackball data Slant range Horizontal range Vertical range Angle to cursor from horizontal

Cursor position reference mark

1547m 1473m 473m

A 33°

㪊㪈㪇

㪊㪇㪇

㪉㪐㪇

㪉㪏㪇

㪉㪍㪇

500

V 12°

R 2000m G 8.0 P 1

㪊㪋㪇

㪊㪊㪇

㪊㪉㪇

1000 1500

㪊㪌㪇

㪈㪇

㪉㪇

500

2000

1000

㪈㪌㪇

㪈㪍㪇

㪈㪎㪇

Vertical bearing mark

㪊㪇

㪋㪇

㪌㪇

㪍㪇

㪎㪇

NUMERIC/

㪏㪇

GRAPHIC

㪈㪇㪇

㪈㪈㪇

㪈㪉㪇

㪈㪊㪇

㪈㪋㪇

3. VERTICAL MODE

DATA

DISPLAY

Range scale

VERTICAL DISPLAY DATA (from left to right) Vertical Bearing (V) Range (R) Gain (G) User program number (P)*

Vertical display 1

R 2000m G8 V 256°

V 12°

500 1000

500

1000

R 2000m G 8.0

*: Shown when [Sel User Prog] is

set to [H/V Individual] on the [Register] menu.

Tilt angle mark (Detection aspect in vertical direction at horizontal display)

Target lock mark (Entered on horizontal display.)

1500

500

1000

P 1

Trackball mark (+ cursor)

3-3

3. VERTICAL MODE

Note: When the settings listed below are changed, the setting value is shown at the top of the display for five seconds. The location of the setting value can be changed. Contact your dealer for details.

• Gain (See section 1.6.)

• Vertical bearing (See paragraph 3.2.2.)

• User program (See section 5.3.)

3.3.2 Vertical bearing mark, tilt mark

The vertical bearing mark is displayed with solid and dashed lines and it shows the bearing selected on the horizontal display. The circle at the top of the vertical bearing mark has a V inside of it in the vertical 1 mode, or 1 and 2 as appropriate when both the vertical 1 and vertical 2 modes are active. Its bearing may be referenced to North (true) or ship’s heading (relative, default setting) on the menu. (See page 6-3.)

The tilt mark is a solid and dashed line which shows in the vertical display the tilt angle set on the horizontal display.

The meaning of the solid and dashed lines are as shown in the table below.

Solid line Dash

Vertical bearing mark Range from own ship to

vertical scan range

Tilt mark Range from own ship to

horizontal scan range

• Display range (See section 3.5.)

• Auto train (See section 3.4.)

Range further than vertical scan range

Range further than horizontal scan range

V = Vertical 1 1, 2 = Vertical 1, Vertical 2

Vertical bearing mark

Tilt angle

Vertical scan range Horizontal scan range

HR = Horizontal Range VR = Vertical Range

Tilt mark

3-4

3.3.3 Cursor position reference mark

The cursor position reference mark, a solid circle, is inscribed on the vertical bearing mark when the cursor is placed in the vertical display. Its purpose is to show corresponding cursor position on the horizontal display. It changes position with cursor position, tilt and range, and disappears when its position is no longer within the range of the horizontal display.

Vertical bearing

Cursor position reference mark

mark

3. VERTICAL MODE

VERTICAL DISPLAY

Tilt mark

Cursor

3.4 Auto Train

You may scan the vertical bearing mark in the sector of ±12°, ±24° and ±36°. Press and hold down the AUTO TRAIN key while pressing the V1/S or V2 key to select the auto train sector desired. Selected sector appears in large characters for five seconds for your confirmation. To cancel auto train, repeat the above procedure to select [OFF].

3.5 Display Range

Auto train mark

Auto train

sector

Vertical bearing mark

The RANGE control selects the detection range. The range selected is momentarily displayed in large characters at the top of the vertical 1 display. Range is always displayed next to “R“ at the lower part of the vertical 1 display.

The default ranges are as shown below. In the vertical 2 combination display, the range for V1 and V2 are same.

Range No. 1 2 3 4 5 6 7 8

Detection range 200 400 600 1000 1600 2000 3000 4000

Note: Ranges can be preset. See page 6-6 for details.

3-5

3. VERTICAL MODE

㪈㪉㪊°㪋㪌㪅㪍㪎㪏㪜

㪊㪋°㪌㪍㪅㪎㪏㪐㪥

1. Press the H/V/S key to show the range and gain indications of the horizontal mode to change the range (and gain). The indication color of the range and gain are changed to orange.

2. Operate the RANGE control to select a range.

Note: The range can also adjusted from the range indication. Put the cursor on the range indication to highlight it in yellow then roll the scrollwheel.

3.6 How to Measure the Range, Bearing to a Target

Operate the trackball to place the cursor on the vertical 1 (or vertical 2) display. The range to the location selected is shown at the top left corner.

Cursor data Slant range Horizontal range Vertical range

ngle to cursor

from horizontal

1547m 1473m 473m

33°

㪊㪈㪇

㪊㪇㪇

㪉㪐㪇

㪉㪏㪇

㪉㪍㪇

500

V 12°

R 2000m G 8.0 P 1

㪊㪊㪇

㪊㪉㪇

1000 1500

㪊㪋㪇

㪊㪌㪇

㪈㪇

㪉㪇

500

2000

1000

㪊㪋°㪌㪍㪅㪎㪏㪐㪥

㪈㪍㪇

㪈㪎㪇

㪈㪉㪊°㪋㪌㪅㪍㪎㪏㪜

Cursor

Note: To show the cursor position in L/L, see page 6-12.

㪊㪇

㪋㪇

㪌㪇

㪍㪇

㪎㪇

NUMERIC/

㪏㪇

GRAPHIC

DATA

DISPLAY

㪈㪇㪇

㪈㪈㪇

㪈㪉㪇

㪈㪊㪇

㪈㪋㪇

㪈㪌㪇

Cursor position

3.7 How to Eliminate Weak Echoes

3-6

played echo from the same school of fish may change with distance, making it difficult to judge the actual size of the school of fish. To overcome this inconvenience use the TVG curve function. It compensates for propagation loss of sound in water; amplification of echoes on short range is suppressed and gradually increased as range increases so that similar targets are displayed in the similar intensities irrespective of the ranges to them.

TVG curve

Four TVG curves are available and they vary the gain from large to small.

1. Press the MENU/ESC key to show the main menu.

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select [V] tab.

4. Select [Sel. TVG Curve] then push the left-click button.

3. VERTICAL MODE

5. Select a curve then push the left-click button. The smaller the number is, the gentler the gain change over distance.

6. Select [Quit] on the setting box then push the left-click button.

7. Long-press the MENU/ESC key to close all menus. The TVG is also used to suppress unwanted echoes (sea surface reflections, cruising noise, etc.) on near ranges. If the selected curve does not provide satisfactory results, try to adjust TVG-Near, TVG-Medium or TVG-Far, as shown below.

TVG distance and setting

This sonar has three TVG functions, Near, Medium and Far, and they mainly compensate for propagation loss on short, middle and long ranges respectively, centered at the ranges shown below. The higher the TVG setting the greater the amplification of echoes.

Near

Approx. 100 m

Med

Approx. 400 m

Far

Approx. 800 m

1. Press the MENU/ESC key to show the main menu.

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3. VERTICAL MODE

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [TVG Distance] then push the left-click button.

5. Select [Changeable] then push the left-click button.

Current settings

6. Select S or T; for [Near], [Med] or [Far] as appropriate then push the left-click

button to change the setting. Near: Setting range, 50 to 150 m, 10 m increments. Med: Setting range, 300 to 500 m, 20 m increments Far: Setting range, 600 to 1000 m, 40 m increments

Select item with trackball; push left-click button to adjust.

7. Select [Quit] on the setting box then push the left-click button. Adjust the TVG level for selected TVG distance as below.

8. Select [TVG-Near], [TVG-Med] or [TVG-Far] as appropriate then push the leftclick button.

10. Select [Quit] on the setting box then push the left-click button to close the box.

11. Long-press the MENU/ESC key to close all menus.

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3.8 How to Adjust Strong, Weak Echoes

3.8.1 AGC

The AGC functions to automatically reduce the receiver gain only against strong echoes such as the bottom or a large school of fish. Since weak echoes remain unaffected, a small school of fish becomes easier to detect. Adjust it so that the AGC works only on bottom reflections. Do not set it too high; weak echoes may be missed.

1. Press the MENU/ESC key to show the main menu.

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [AGC] then push the left-click button.

5. Select S or T then push the left-click button to change the setting.

The setting range is 0 to 9. The higher the setting, the higher the degree of suppression.

6. Select [Quit] on the setting box then push the left-click to close the box.

3. VERTICAL MODE

7. Long-press the MENU/ESC key to close all menus.

3.8.2 Near AGC

When the water is shallow or heavily sedimented, the reflected echoes from close-in, unwanted echoes may be excessively strong. In this case, a school of fish which is displayed at between 300 and 500 m may disappear gradually when the ship starts approaching the school of fish.

Use the Near AGC feature to suppress this strong echo. Normally set it between 3 and 4, however, this setting depends on the sea area. Do not set it too high; all echoes (including noise) from near distance may be painted in red.

1. Press the MENU/ESC key to show the main menu.

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [Near AGC] then push the left-click button to show the setting dialog box.

5. Select [Near AGC] again then push the leftclick button.

6. Select S or T then left-click to change the setting. The setting range is -30 to 30. The higher the setting, the stronger the echo level on near range.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

Note: Set the effective range of [Near AGC] with [Near AGC Distance]. The setting range is 20 to 500 (or 3000) m, in 20 m increments. The setting range can be changed in the system menu. For details, contact your dealer.

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3. VERTICAL MODE

3.8.3 2nd AGC

While it is ideal to suppress bottom echoes with the AGC alone, there are some fishing grounds where this is not possible. (The high power sonar has the advantage of longrange detection but this can also be a disadvantage, since weaker echoes may be hidden in strong, unwanted echoes such as the bottom.) If you can not suppress bottom echoes or sea surface reflections by the AGC function alone, use the 2nd AGC feature. Normally a setting of 1 or 2 is suitable. For especially strong echoes, use a setting of 3 or 4.

1. Press the MENU/ESC key to show the main menu.

2. Select [Gain Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [2nd AGC] then left-click to show the setting box.

5. Select [2nd AGC] again then push the leftclick button.

6. Select S or T then push the left-click button to change the setting. The setting range is 0 to 12. The higher the setting, the stronger the suppression on long range.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

Other AGC-related items on the [2nd AGC] menu

Distance: Set the start range for the 2nd AGC. The setting range is 0 - 2000 m, in 20

m increments. 2nd AGC is inoperative if the display range is lower than the 2nd AGC start range.

Type: Select the TVG type for 2nd AGC. Select [Normal] for everyday use.

3.8.4 How to shorten pulse length

Note: For search of surface and midwater fish in which bottom reflections are not so strong, use the longest pulse length 9.

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1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. VERTICAL MODE

3. Press the H/V/S key to select the [V] tab.

4. Select [TX Pulse Length] then push the left-click button.

5. Select S or T then push the left-click button to change the setting. The setting

range is 0-9. The higher the setting, the longer the pulse length.

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

3.9 How to Reject Sonar Interference and Noise

3.9.1 How to identify the noise source

To eliminate noise effectively, you should first identify the noise source as follows:

1. Stop transmission on the [Test] menu; turn on [TX]. Turn on the power of all onboard equipment one by one while observing the picture. If noise appears on the sonar display, that equipment is emitting noise. Check the offending equipment's ground and installation.

2. Run the boat at various speeds to check if the noise is speed dependent.

If neither of the above two steps has effect on the picture, adjust one of the following:

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3. VERTICAL MODE

3.9.2 Interference rejector

1. Press the MENU/ESC key to show the main menu.

2. Select [Picture Setting] then push the leftclick button.

3. Press the H/V/S key to select the [V] tab.

4. Select [Int Reject] then push the left-click button.

5. Select S or T then push the left-click button to change the setting The setting range is 0 to 3. The higher the setting, the greater the degree of interference rejection.

6. Select [Quit] on the setting box to close the box.

7. Long-press the MENU/ESC key to close all menus.

3.9.3 Shift TX frequency

If the interference can not be suppressed by the interference rejector or change in TX interval, shift the Tx frequency with the [Frequency] menu.

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [Freq Shift1] then push the left-click button.

5. Select S or T then push the left-click button to change the setting. The setting range is -30 to 30.

6. Select [Quit] on the setting box then push the left-click button.

7. Long-press the MENU/ESC key to close all menus.

Note: In some cases the frequency can not be changed because of operating bandwidth. In this case the frequency setting is grayed.

3.9.4 Noise limiter

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1. Press the MENU/ESC key to show the main menu.

2. Select [Display Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

3. VERTICAL MODE

4. Select [Noise Limiter] then push the left-click button.

5. Select S or T then push the left-click button to set the value (setting range: 0 to

15).

6. Select [Quit] on the setting box then push the left-click button to close the box.

7. Long-press the MENU/ESC key to close all menus.

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3. VERTICAL MODE

3.9.5 Reverberation

You may select the length of reverberation for the echo signal, with [Reverberation] in the [TX/RX Setting] menu on the [V] tab. The larger the setting, the lower the reverberation effect, which makes it easier to see the echo signal. The setting range is 0 to

3.9.6 Echo average

[Echo Average] on the [Picture Setting] menu in the [V] tab adjusts echo afterglow the amount of time an echo signal remains on the screen. This feature can be useful for watching echo movement. The setting range is 0 to 11. Setting between 1 and 7: Echoes are gradually displayed and afterglow remains on the screen longer as the setting is increased.Setting between 8 and 11: Echoes are quickly displayed and afterglow remains on the screen longer as the setting is increased.

3.9.7 How to suppress the bottom echo

[Bottom Suppress] on the [TX/RX Setting] menu in the [V] tab suppress the stable echoes such as bottom echo, plankton echo. Moving echoes such as fish school are not effected by this setting. The setting range is 0 to 10. The higher the setting, the lower the stable echo.

Note: Do not over suppress the bottom echo; a slow moving school of fish may also be suppressed.

3-14

3.10 How to Adjust Beam Width

The width of the horizontal beam can be adjusted from the [Beam Width] menu.

1. Press the MENU/ESC key to show the main menu.

2. Select [TX/RX Setting] then push the left-click button.

3. Press the H/V/S key to select the [V] tab.

4. Select [Beam Width] then push the left-click button.

5. Select [Beam] then push the left-click button.

6. Select [S] (raise setting) or [T] (lower setting) to adjust the beamwidth. The set-

ting range is 0 to 5.

7. Select [Quit] on the setting box then push the left-click button to close the box.

8. Long-press the MENU/ESC key to close all menus.

3. VERTICAL MODE

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3. VERTICAL MODE

3.11 Other Menu Items

This section describes menu items which have not been explained yet.

Display Setting menu

Gain Offset: Adjusts gain level. If the GAIN control on the front panel does not provide

satisfactory gain adjustment, enter an offset here. The setting range is 0 to 12.

Color: Select color arrangement to use.

V-Scan Color 1 (2 to 4) Setting: Customizes colors. For details, see page 2-36.

V-Scan Color Curve Setting: Adjusts reflected echo strength versus echo color level

for currently selected color response number. To adjust the curve, see page 2-36.

Picture Setting menu

3-16

Smooth Echo RNG: Selects echo smoothing level in the range direction. The setting

range is 0 to 7. The higher the setting, the greater the smoothing.

3. VERTICAL MODE

Smooth Echo CIR: Selects echo smoothing level in the circular direction. The setting range is 0 to 5. The higher the setting, the greater the smoothing.

3.12 Application to Bonito and Tuna Fishing

Tracking of bonito and tuna presents a special challenge to the sonar operator: He must try to keep them within the sonar beam, a formidable task considering their high speed and penchant for leaping and diving. However, the vertical display, with its wide range in the vertical direction, makes this task easier.

3.12.1 Searching

Neither the naked eye nor binoculars can continually track schools of fish which make lightning quick runs between the surface and midwater. A sonar, however, provides a continuous view of several hundred meters of sea area around the boat, both at the surface and below it.

3.12.2 Tracking

If you are visually tracking a school of fish which characteristically leaps and dives regularly, or a school with a flock of birds hovering over it, the school will scatter once the vessel approaches, thus you will lose sight of the school. This sonar provides continuous pictures of underwater conditions, so you can always know where a school of fish is. For tracking the schools which leap and dive often the vertical mode is especially effective.

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3. VERTICAL MODE

3.12.3 Approaching

The sonar lets you view the movement of a school of fish continuously, thus you can approach a school confident of a good catch.

While a flock of birds hovering over the sea surface is usually a good indication of the presence of a school of fish, the sonar can better verify the size of a school of fish.

3.12.4 Catching

While the sonar operator monitors the sonar for other schools of fish, the crew can scatter bait and water to attract fish to the boat.

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4. NUMERIC/GRAPHIC DATA DISPLAY

4.1 Numeric/Graphic Data Display

This display provides comprehensive numeric/graphic data and appears with the horizontal and vertical displays, at the right side of the display.

HEADING

SHIP COURSE

SHIP SPEED

LAT/LON[DGPS]

32°52.150N 132

DEPTH

WATER CURRENT

321m

C1 1.2kn 342 C2 0.8kn 298 C3 0.4kn 256

NET DEPTH

S1 134m S2 178m S3 213m

FISH HISTOGRAM

1 SCAN1

321

335

12.5kn

12.150E

Heading* Course*

Speed*

Position format

Navigator type (in brackets)* DGPS: Differrential GPS KGPS: Kinematic GPS FGPS: Floating GPS GPS: GPS LC: Loran C DR: Dead Reckoniong ***: Position error

Depth

Water current speed and direction for three layers*

Net sonde depth data*

Fish histogram (See page 2-29.)

WATER TEMP

* Requires appropriate sensor.

10.35°C

Water temperature*, Water temperature

01020MIN

graph*

TARGET LOCK ON

(Mark Interlock:

Est & Fish Info

at Target Lock menu)

TARGET LOCK OFF

SCHOOL OF FISH INFO LENGTH 51 m WIDTH 47 m HEIGHT 24 m DIMENSIONS 2564 m VOLUME 45805 m WEIGHT 59 t

4-1

4. NUMERIC/GRAPHIC DATA DISPLAY

4.2 Numeric, Graphic Data Description

When a data is lost its last-entered value is shown in red. Data displays can be turned on or off through the [DATA DISPLAY] menu.

Numeric/

Graphic item

Heading Shows heading

Course Shows ship

Speed Shows ship

Position of the ship

Position sensor

Depth Shows depth

Current Shows tide

Net depth Depth of net

Description Display range

input from heading sensor.

course fed from numeric/graphic indication.

speed fed from a Numeric/graphic indication.

Ship position in latitude and longitude. If position data is lost the last-entered position is shown in red.

The position sensor type is displayed in brackets (“[]“). When the position sensor is not connected, the brackets are left blank.

from transducer to bottom.

speed and direction for three layers or tide and speed for two layers against a reference layer fed from a current indication.

sonde transmitter. Shown only at shooting of net.

Available

formats

32 comp. pts, 0° to 359° 0° to 359° 1° to 179° P/S, 0°, 180°

0 to 40 kn Fixed at knots

Lat: 90°00.000S to 90°00.000N Lon: 179°59.999W to 179°59.999E, 180°00.00, 0°00.000

DGPS, KGPS, FGPS, GPS, LC, DR, *** Note: “***“ is displayed when the positioning error occurs.

0 to 9999 m Meters

Cur. Speed: 0 to 9.9 kn Direction: 0° to 359°

0 to 999 m Depth of up to

32 comp. pts. 360° True 360° Rel 180° Rel

Lat/Lon

GPS Loran-C DR AUTO

Direction shown as flow from or flow to

3 pts can be displayed.

Where to change format

[Data Display] menu

System menu

[Current Vec & Wind] menu

[Net Sonde Setting] menu

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4. NUMERIC/GRAPHIC DATA DISPLAY

Numeric/

Graphic item

Fish histogram

Water temp. Shows water

Water temp. graph

Info on school of fish

Description Display range

Shows signal strength concentration of fish estimate mark inscribed on horizontal display.

temperature input from a temperature sensor.

Shows water temperature over time. Horizontal axis: time, Vertical axis: °C(°F)

Shows information about school of fish during target lock operation.

Available

formats

Two marks On/Off on the [Mark Display]- [Histogram

Disp.] menu

-10.00°C to +40.00°C,

14.00°F to 104.00°F

Horizontal axis: Time 20 min./1h/6h/12h/ 24h, Vertical axis: Temp. 4°C, 8°F, fixed width, auto shift)

Length: Distance to school of fish in range direction Width: Distance to school of fish in bearing direction Height: Vertical distance Dimensions: Horizontal dimension of school of fish Volume: Estimated volume of school of fish Weight: Estimated tonnage of school of fish, calculated from dimen-

sion or volume above

°C, °F [Data Display] menu

Where to change format

4-3

4. NUMERIC/GRAPHIC DATA DISPLAY

This page is intentionally left blank.

4-4

5. HOW TO CUSTOMIZE THE

Push the left-click button.

User menu items

EQUIPMENT

5.1 User Menu

You may program 20 often-used menu items to the user menu area in the menu. The default user menu contains, pulse length, TX power, TVG near, TVG medium, TVG far, AGC, 2nd AGC, color, response color and echo average for the horizontal display.

Push the left-click button.

User menu items

*: This means this item is

programmed to H1 menu.

5.1.1 How to program the user menu

The procedure below shows you how to add the menu item [V Mode] (on the Wheel Setting menu) to the user menu. Some menu items can not be programmed to the user menu. See the menu tree on page AP-1 to AP-5 for items which can be programmed.

1. Push the right-click button on the numeric/graphic data display to show the pop-

up menu.

2. Select [Wheel Setting] then push the left-click button.

3. Select [V Mode] then push the left-click button more than one second. The mes-

sage "User Menu Registration Selected item will be registered in main menu." appears.

5-1

5. HOW TO CUSTOMIZE THE EQUIPMENT

4. Select [Register] then push the left-click button. The selected item is registered, and shown at the bottom of the menu. The order of items in the [USER] menu can be changed by drag and drop.

Note: If 20 items are already registered to the user menu the following message appears. Delete unnecessary items from the user menu and then repeat this procedure to register different item. Press the MENU/ESC key to close this message.

5. Long-press the MENU/ESC key to close all menus.

5.1.2 How to delete items from the user menu

To delete a menu item from the user menu which you do not require, do as follows.

1. Press the MENU/ESC key to open the main menu.

2. Select [T Shortcut Menu] then push the left-click button.

3. Select the item to delete then push the left-click button more than three seconds.

The message "Delete Registration Selected item will be removed from main menu. Are you sure?" appears.

4. Select [Remove] then push the left-click button to delete.

5. Long-press the MENU/ESC key to close all menus.

5.2 Function Keys (F1 to F10)

The function keys provide one-touch display of desired menu item or entire menu. The default function key settings are as below. Not all menu items and menus may be programmed to the function keys. See the menu tree on page AP-1 to AP-5 for items which may be programmed.

Function key Default setting Function

F1 Record Still Image Save the still image F2 Recall Still Image Open the [Still Image] window F3 Event Mark 1 Erase event mark 1 F4 Event Mark 1 Erase event mark 2 F5 Fish Mark Erase fish mark F6 Own Ship Pos Mark Erase own ship position mark F7 Ship’s Track Erase approx. 10% of the ship’s track F8 Dimmer Adjust panel dimmer F9 Stabilization Activate or deactivate the stabilization F10 Net Course Mark Enter or erase the net course mark

5-2

5. HOW TO CUSTOMIZE THE EQUIPMENT

5.2.1 How to execute a program

1. Press desired function key to show the applicable dialog box.

When the F8 key is pressed

2. Press the same function key again within five seconds to execute the function. The dialog box automatically disappears in five seconds. You can also close the dialog box manually by pressing any function key other than the one pressed at step 1.

5.2.2 How to program the function keys

You can change the default setting of a function key as shown below. Note that some menu items can not be programmed to the function keys. See the menu tree on page AP-1 to AP-5 for items which can be programmed for function keys.

1. Press the MENU/ESC key to open the menu.

2. Press desired function key for more than one second. The message shown below appears for five seconds.

3. Press the same function key again, and the message shown below appears.

5-3

5. HOW TO CUSTOMIZE THE EQUIPMENT

5.2.3 How to erase programs

1. Press the MENU/ESC key to open the main menu.

2. Select [Others] then push the left-click button.

3. Select [Register] then push the left-click button.

4. Select [Clear F-KEY Setting] then push the left-click button.

5. Select [Changeable] then push the left-click button.

6. Select the function key for which you want to erase its program then push the left-click button. Repeat this step for other function keys.

7. Select [Quit] on the setting box then push the left-click button.

8. Long-press the MENU/ESC key to close all menus.

5.2.4 How to program the function keys of remote controller

You can program the function keys (F1-F4) on the remote controller (option) to provide one-touch access to the functions of the keys on the control unit.

The function of the following control unit keys can be assigned to the function keys on the remote controller.

• V1/S key

• V2 key

• EVENT (or ) key

• OFF CENTER key

• ESTIMATE 1 (or 2) key

• SHOOT key

• R/B AUDIO key

The default setting of the F1 to F4 key is the same as those on the control unit. To change a setting, do as follows:

• DELETE MARK key

• TARGET LOCK key

• FISH key

• AUTO TRAIN key

• DISP MODE key

• H/V/S key

• F1 to F4 key

5-4

1. Press the F8, F9, and F10 keys in order while pressing the MENU/ESC key to ac-

tivate the program registration mode on the remote controller.

2. Press the MENU/ESC key to close the menu.

3. Press and hold down the applicable key on the control unit and then press a func-

tion key on the remote controller. When the registration is completed the audio alarm sounds.

4. Operate the function key programmed to confirm functionality.

5. Repeat steps 1 to 4 to program another function key.

5. HOW TO CUSTOMIZE THE EQUIPMENT

5.3 USER PROG Control

The USER PROG control provides for instant setup of the equipment according to fishing ground or target fish. Ten programs may be set up, and vertical and horizontal display settings may be programmed together or individually. (The default settings programs them together. For how to program them individually see section 5.3.2.)

5.3.1 How to select a user program

Rotate the USER PROG control clockwise or counterclockwise to select the program no. desired. The program no. selected appears at the top right-hand corner of the screen to the right of “P”. If the equipment is turned off with a user program active, it starts up with those settings at the next power on.

Note: The user program no. can also be adjusted from the user program no. indication. Put the cursor on the user program no. indication to highlight it in yellow then roll the scrollwheel.

5.3.2 How to program the USER PROG control

1. Set the display appropriately. When a combination mode is shown, press H/V/S key to select the display to program.

2. Press the MENU/ESC key to show the main menu.

3. Select [Others] then push the left-click button.

4. Select [Register] then push the left-click button.

[Sel User Prog] = [H/V Interlock]

[Sel User Prog] = [H/V Individual]

*: H/V Interlock: Effective on both H and V displays.

H/V Individual: Select the display to use with the H/V/S key.

5. Do one of the following then push the left-click button.

• For H/V Interlock: Select [Assign User Prog].

• For H/V Individual: Select Assign [User Prog-H/S] or [Assign User Prog-V].

5-5

5. HOW TO CUSTOMIZE THE EQUIPMENT

6. Select [Changeable] then push the left-click button. One of the following displays appears depending on your selection.

“Assign User Prog”

“User Prog-H”

“User Prog-V”

7. Select a program no. then push the left-click button.

8. Select [Quit] on the setting box then push the left-click button.

9. Long-press the MENU/ESC key to close all menus.

5-6

6. OTHERS MENU

This chapter provides descriptions for the [Others] menu. To display the [Others] menu, press the MENU/ESC key, select [Others] then push the left-click button.

The [Record/Recall] menu is described in chapter 7. Also, menu items shown in gray can not be accessed.

6.1 Erase Marks Menu

The [Erase Marks] menu lets you delete selected marks and track.

1. Select [Erase Marks] on the [Others] menu then push the left-click button. This menu can be also opened from the right-click pop up menu.

2. Select the mark (or track) you want to delete then push the left-click button. The earliest mark is deleted. For ship’s track, approximately 10% of the track is erased with each push of the left-click button.

3. To continue erasing marks, push the left-click button.

4. Long-press the MENU/ESC key to close all menus.

Note: The default function of the F3 (for event mark 1), F4 (for event mark 2), F5 (fish mark) and F6 (for own ship position) keys delete the oldest event mark, fish mark, own ship mark. The default function of the F7 key erases approximately 10% of the track.

6-1

6. OTHERS MENU

6.2 Wheel Setting Menu

One of the following functions can be assigned to the scrollwheel.

• Tilt angle (Horizontal display only)

• Gain

• Range

• Bearing (Vertical display only)

1. Select [Wheel Setting] on the [Other] menu then push the left-click button. This menu can be also opened from the pop-up menu.

2. Select [H Mode] or [V Mode] then push the left-click button.

H Mode

3. Select the function to assign to the scrollwheel then push the left-click button.

4. Select [Quit] on the setting box then push the left-click button to close the box.

5. Long-press the MENU/ESC key to close all menus.

V Mode

6-2

6.3 Display Setting Menu

The [Display Setting] menu sets various display-related items according to operator’s preference. To display the menu, open the main menu then select the [Others] and [Display Setting] menus.

6. OTHERS MENU

Mode Selection: Determines how display modes are chosen: MODE key or pull-down menu.

Echo Disp Area: Selects the echo display mode for the horizontal display, [Within Range] or [Full Screen]. See page 1-7.

H2 Display: Selects the combination mode of two horizontal displays: Landscape, Portrait, or Inset.

2nd Monitor Setting: When two monitors are connected, select the combination mode for the sub-display; Landscape or Portrait. This function is available only when [Dual Display] is selected at [2nd Monitor Setting] on [Others]-[Initial Setting] menu.

V-Scan Aspect Ratio: Selects the type of the horizontal to vertical ratio to use on the V-display; Fixed or Flexible.

Presentation Mode: Selects presentation mode. Head-up, North-up, Course-up and true motion (requires ship’s speed and heading data) are available.

TM Disp Range: Selects how many times to expand the display range in the true motion mode. 1.3R (R=Range) and 1.6R are available.

Note: When you set [TM Disp Range] to 1.3R and [Full Screen Area] to 1.6R, the full screen area for the TM mode becomes 1.6R.

Full Screen Area: Selects a configuration for the full screen display, 1.3R or 1.6R.

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6. OTHERS MENU

Bearing Ref: Selects how to reference bearing for the vertical bearing marker. The choices are ship’s heading and North.

TILT lever: Selects function of the TILT control. [Tilt] sets the tilt only. [Tilt & V1] sets the bearing of the vertical 1 display in the vertical display and sets the tilt in the horizontal display./

Auto Tilt: Selects the auto tilt angle, Wide (±2° to 10°, ±4° to 16°, ±6° to 20°) or Narrow (±1° to 4°, ±2° to 6°, ±3° to 8°).

Net Course Mark: Inscribes/deletes the net course mark. For details, see section 2.19.

Key Beep Volume: Sets the volume of the beep which sounds for key operation. The setting range is 0 to 7. “0” turns off the key beep.

TimerDisplay: Set [ON] to show the timer window at the bottom left of the display. The timer window can be moved by drag and drop operation. Operate the timer window as shown below.

1. Select [X] on the timer window and push the left-click button to start the timer. The icon [X] on the timer window changes to [●].

2. Select [●] on the timer window and push the left-click button to stop the timer. The icon [●] on the timer window changes to [X].

3. Select [ ] on the timer window and push the left-click button to reset the timer.

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6.4 Alarm & Audio Menu

The [Alarm & Audio] menu sets the fish alarm and the audio bearing mark sector. To show this menu, open the main menu, then open the [Others] and [Alarm & Audio] menus.

Fish Alarm: Turns the fish alarm function on or off. The default setting is [OFF].

6. OTHERS MENU

Alarm Level: Sets the minimum echo color which triggers the fish alarm. The setting range is 0 to 30.

Alarm Zone: Sets fish alarm zone. For details, see section 2.14.

Ship SPD Alarm: The default setting is ON. The alarm is released if ship’s speed ex-

ceeds the following limits: Lowering transducer: 18 knots (1200 mm stroke) or 15 knots (1600 mm stroke) Raising transducer: 15 knots (1200 mm stroke) or 12 knots (1600 mm stroke)

Audio: Turns the audio function on/off.

Audio Alarm: Adjusts the volume of the audio alarm.

Audio Sector: Selects the audio sector width for use with audio function.

Reverberation: Selects the length of reverberation for audio signal. The setting range

is 0 to 9. 0 is no reverberation. The larger the setting, the longer the reverberation.

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6. OTHERS MENU

6.5 Register Menu

The [Register] menu provides various programming functions. To show this menu, select [Register] on [Others] menu then push the left-click button.

[Sel User Prog] = [H/V Interlock]

Sel User Prog/Assign User Prog/Auto User Prog Sel: Programs the USER PROG control. For further details see section 5.3.

Display Mode: Selects the display mode to use.

F-KEY List: Shows the functions assigned to each function key.

Clear F-KEY Setting: Erases program assigned to a function key.

H-Scan Range: Presets the horizontal mode ranges as selected with the RANGE

control. The setting range is 60 to 5000 m.

V-Scan Range: Presets the vertical scan ranges as selected with the RANGE control. The setting range is the same as that for [H-Scan Range].

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Furuno FSV35 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

TABLE OF CONTENTS

FOREWORD

SYSTEM CONFIGURATION

1. OPERATIONAL OVERVIEW

1.1 Control Description

1.1.1 Control unit

1.1.2 Sub control unit (option)

1.1.3 Remote controller (option)

1.2 Turning the Power On/Off

1.3 Lowering, Raising the Transducer

1.3.1 Lowering the transducer

1.3.2 Raising the transducer

1.4 Screen Brilliance, Panel Dimmer

1.4.1 Screen brilliance

1.4.2 Panel dimmer

1.5 Display Mode, Display Division

1.5.1 How to select a display mode

1.5.2 Display mode pictures

1.6 How to Adjust the Gain

1.7 How to Use the Menu

2. HORIZONTAL MODE

2.1 Basic Operating Procedure

2.2 Indications and Markers

2.2.1 Horizontal mode, full-screen display

2.2.2 Horizontal2 mode

2.3 Display Range

2.4 Tilt Angle

2.4.1 How to set the tilt angle

2.4.2 Automatic tilt

2.4.3 Relation between bottom echo and tilt angle

2.4.4 Tilt angle for surface fish

2.4.5 Suitable tilt angle

2.5 How to Measure Range and Bearing to a Target

2.6 How to Eliminate Weak Echoes

2.7 How to Adjust Strong, Weak Echoes

2.7.1 AGC

2.7.2 Near AGC

2.7.3 2nd AGC

2.7.4 How to shorten pulse length

2.9 How to Reject Sonar Interference and Noise

2.9.1 How to identify the noise source

2.9.2 Change TX interval

2.9.3 Interference rejector

2.9.4 Shift TX frequency

2.9.5 Noise limiter

2.9.6 Reverberation

2.9.7 Echo average

2.9.8 Reference bearing in frequency shift

2.9.9 How to suppress the gain of bottom echo

2.10 How to Adjust Beamwidth

2.11 How to Track a School of Fish

2.11.1 How to select the target lock mode

2.11.2 Fish mode

2.11.3 Target mark mode

2.11.4 Target lock menu description

2.12 Presentation Mode

2.12.1 Presentation mode description

2.12.2 How to select a presentation mode

2.13 How to Detect Schools of Fish Aurally

2.13.1 How to set the bearing

2.13.2 How to select the audio sector

2.13.3 Automatic training

2.13.4 Reverberation for audio signal

2.14 Fish Alarm

2.15 How to Relocate a School of Fish

2.16 How to Compare Concentration of School of Fish

2.16.1 How to compare with the fish estimate mark

2.16.2 How to compare with the circle cursor

2.17 How to Measure the Speed of a School of Fish

2.17.1 How to measure the speed of a school of fish

2.17.2 How to delete fish marks

2.18 Event Mark, Own Ship Position Mark

2.18.1 How to enter an event mark

2.18.2 How to enter an own ship position mark

2.18.3 How to erase an event mark, own ship position mark