Furuno CHS-5LMARK-2-55, CHS-5LMARK-2-68, CHS-8LMARK-2-107, CHS-8LMARK-2-85 Operator's Manual

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Page 1

OPERATOR'S MANUAL

SCANNING SONAR

CSH-5LMARK-2-55 CSH-5LMARK-2-68 CSH-8LMARK-2-85

Model

(PRODUCT NAME: FULL-CIRCLE SCANNING SONAR)

CSH-8LMARK-2-107

www.furuno.com

Page 2

The paper used in this manual

9-52 Ashihara-cho,

A:JUN

2015

A3:JUL.22, 2016

Pub. No.

(

)

Nishinomiya, 662-8580, JAPAN

is elemental chlorine free.

・FURUNO Authorized Distributor/Dealer

MISU

CSH-5LM2/CSH-8LM2

Printed in Japan

OME-13500-A3

0 0 0 1 9 0 9 0 4 1 0

Page 3

IMPORTANT NOTICES

Ni-Cd Pb

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(ies), see the chapter on Maintenance. Follow the instructions below if a battery(ies) is used.

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

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.

Page 4

SAFETY INSTRUCTIONS

WARNING

ELECTRICAL SHOCK HAZARD 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 in the equipment.

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

Do not disassemble or modify the equipment.

Fire, electrical shock or serious injury can 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.

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.

Make sure no rain or water splash leaks into the equipment.

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

Use the proper fuse.

Fuse rating is shown on the equipment. Use of a wrong fuse can damage the equipment.

Do not operate the equipment with wet hands.

Electrical shock can result.

Mandatory Action

Prohibitive Action

Warning, Caution

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

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, could result in minor or moderate injury.

WARNING

CAUTION

Page 5

SAFETY INSTRUCTIONS

CAUTIONCAUTION

Do not exceed 18 knots with the transducer lowered and do not exceed 15 knots when lowering or raising the transducer.

The transducer may become damaged.

Turn off the POWER switch on the hull unit before manually raising or lowering the transducer (with the ratchet wrench).

Bodily injury may result if the ratchet wrench rotates unexpectedly, because the raise/lower motor may start up.

The zinc block attached near the transducer must be replaced yearly.

The junction between the transducer and main shaft may corrode, which can result in loss of the transducer or water leakage iinside the ship.

WARNING LABEL A warning label is attached to all units of the system. Do not remove any label. If a label is missing or damaged, contact a FURUNO agent or dealer about replacement.

Name: Warning Label (1) Type: 86-003-1011-1 Code No.: 100-236-231

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FOREWORD ..................................................................................................................vii

SYSTEM CONFIGURATION ........................................................................................viii

TABLE OF CONTENTS..................................................................................................iv

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

1.1 Control Unit ................................................................................................................ 1-1

1.2 Remote Controller (option).........................................................................................1-2

1.3 Basic Operating Procedure ........................................................................................ 1-3

1.3.1 Turning on the power .....................................................................................1-3

1.3.2 Lowering the transducer................................................................................. 1-3

1.3.3 Transmitting ...................................................................................................1-4

1.3.4 Adjusting backlighting of control unit.............................................................. 1-5

1.3.5 Choosing a display mode...............................................................................1-6

1.3.6 Choosing the display range............................................................................ 1-8

1.3.7 Adjusting the gain...........................................................................................1-9

1.3.8 Retracting the transducer, turning off the power............................................1-9

1.4 Setting the Tilt Angle ................................................................................................ 1-10

1.4.1 Automatic tilt on/off....................................................................................... 1-10

1.4.2 Bottom and tilt angle ....................................................................................1-11

1.4.3 How to discriminate fish echoes from the bottom ........................................ 1-12

1.4.4 Points to consider.........................................................................................1-12

1.4.5 Tilt angle for surface fish..............................................................................1-12

1.4.6 Suitable tilt angle..........................................................................................1-13

1.5 Finding Range and Bearing to a Target................................................................... 1-14

1.6 Sonar Menu Overview..............................................................................................1-15

1.6.1 Operating procedure ....................................................................................1-15

1.6.2 Sonar menu description ...............................................................................1-16

2. FINE TUNING THE SONAR PICTURE..................................................................2-1

2.1 Eliminating Unwanted Echoes ...................................................................................2-1

2.2 Displaying Surface Fish Clearly .................................................................................2-2

2.3 Suppressing Bottom Tail ............................................................................................ 2-2

2.3.1 AGC ...............................................................................................................2-2

2.3.2 Pulse length ...................................................................................................2-3

2.3.3 2ND AGC .......................................................................................................2-3

2.4 Suppressing Bottom and Sea Surface Reflections in Shallow Fishing Grounds .......2-4

2.5 Rejecting Sonar Interference and Noise ....................................................................2-5

2.5.1 Identifying noise source .................................................................................2-5

2.5.2 Rejecting noise with the interference rejector ................................................ 2-5

2.5.3 Rejecting noise with the noise limiter.............................................................2-5

2.5.4 Rejecting interference with TX cycle..............................................................2-6

2.6 Choosing Beamwidth .................................................................................................2-7

2.6.1 Horizontal beamwidth..................................................................................... 2-7

2.6.2 Vertical beamwidth......................................................................................... 2-7

2.7 Deleting Weak Echoes...............................................................................................2-7

2.8 Echo Averaging.......................................................................................................... 2-7

3. ADVANCED SONAR OPERATION .......................................................................3-1

3.1 Tracking a School of Fish (target lock)....................................................................... 3-1

3.2 Detecting Schools of Fish Aurally ..............................................................................3-2

3.3 The Fish Alarm...........................................................................................................3-3

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TABLE OF CONTENTS

3.4 Measuring Speed of School of Fish............................................................................3-4

3.4.1 Entering a fish mark .......................................................................................3-4

3.4.2 Deleting individual fish marks.........................................................................3-5

3.5 Relocating School of Fish for Easy Observation ........................................................3-5

3.6 Event Mark, Own Ship Position Mark.........................................................................3-6

3.6.1 Event mark .....................................................................................................3-6

3.6.2 Entering an own ship position mark ...............................................................3-7

3.6.3 Deleting an event mark ..................................................................................3-7

3.7 Collectively Deleting Marks ........................................................................................3-7

3.8 Function Keys (F1-F4)................................................................................................3-8

3.8.1 Operating the function keys............................................................................3-8

3.8.2 Programming for fishing ground or target fish................................................3-8

3.8.3 Programming specific function .......................................................................3-9

3.8.4 Confirming function key program ...................................................................3-9

3.9 Suppressing Effects of Pitching and Rolling (Stabilizer)...........................................3-10

4. ECHOSOUNDER MODE .......................................................................................4-1

4.1 Choosing the Range...................................................................................................4-1

4.2 Adjusting the Gain ......................................................................................................4-2

4.3 Picture Advance Speed..............................................................................................4-3

4.4 Measuring Depth ........................................................................................................4-3

4.5 Suppressing Interference ...........................................................................................4-4

4.6 Suppressing Low Level Noise ....................................................................................4-4

4.7 Erasing Weak Echoes ................................................................................................4-5

4.8 Other Items on the Sounder Menu .............................................................................4-5

5. MARKS AND DATA ..............................................................................................5-1

5.1 Marks and Data on the Normal Display......................................................................5-1

5.2 Marks and Data on the Echosounder and Audio Displays .........................................5-5

6. INTERPRETING THE DISPLAY............................................................................6-1

6.1 Bottom Echo...............................................................................................................6-1

6.2 School of Fish.............................................................................................................6-2

6.3 Sea Surface Reflections .............................................................................................6-3

6.4 Wake ..........................................................................................................................6-3

6.5 False Echo by Sidelobe..............................................................................................6-4

6.6 Noise and Interference ...............................................................................................6-4

7. MARKS AND SYSTEM MENUS............................................................................7-1

7.1 MARKS Menu.............................................................................................................7-1

7.2 SYSTEM Menu...........................................................................................................7-3

7.3 Activation Code ..........................................................................................................7-5

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

8.1 General Maintenance .................................................................................................8-1

8.2 Cleaning the Equipment .............................................................................................8-1

8.3 Hull Unit Maintenance ................................................................................................8-2

8.3.1 Lubrication points, zinc plate..........................................................................8-2

8.3.2 Manually raising the transducer .....................................................................8-3

8.4 Fuse Replacement .....................................................................................................8-4

8.5 Fan Replacement .......................................................................................................8-4

8.6 Troubleshooting..........................................................................................................8-5

8.7 Error Messages ..........................................................................................................8-6

8.8 Diagnostic Tests.........................................................................................................8-7

8.8.1 Choosing a diagnostic test .............................................................................8-7

8.8.2 Description of diagnostic tests........................................................................8-8

Page 8

TABLE OF CONTENTS

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

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

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

Page 9

FOREWORD

A Word to the Owner of the CSH-5LMARK-2/CSH-8LMARK-2

Congratulations on your choice of the FURUNO CSH-5LMARK-2/CSH-8LMARK-2 Color Scanning Sonar.

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

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

We would appreciate hearing from you, the end-user, about whether we are achieving our purposes.

Thank you for considering and purchasing FURUNO equipment.

Features

The FURUNO CSH-5LMARK-2 and CSH-8LMARK-2 Color Scanning Sonars are full-circle electronic scanning sonars that detect and instantaneously display schools of fish and underwater conditions in 16 colors.

Some of the prominent features of the CSH-5LMARK-2 and CSH-8LMARK-2 are as follows:

• Vivid 16-color display assists in recognition of bottom, and concentration and distribution of schools of fish.

• Transducer frequency available in 55 kHz or 68 kHz for the CSH-5LMARK-2 and 85 kHz or 107 kHz for the CSH-8LMARK-2.

• Various fishing and navigation data (appropriate sensors required) keep operator abreast of fishing and navigation conditions.

• High power MOS FET transmitter ensures reliable operation under any condition.

• Remote controller optionally available.

• Four user-programmable function keys for quick set up of equipment according to fishing conditions or specific function.

• Target lock feature tracks school of fish.

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Page 10

SYSTEM CONFIGURATION

Monitor (MU-150HD, etc., Max. 2)

Processor Unit CSH-5210-A

Control Unit CSH-5211-A

Transceiver Unit CSH-5130-A-5L

Navaid Current Indicator AD Converter Speed Log E/S Interface Remote Controller Speaker

Motion Sensor

MS-100

Hull Unit CSH-5040-A, 600 mm stroke CSH-5041-A, 400 mm stroke

Pre-amplifier Unit CSH-5020-A

: Standard Supply : Option : User Supply

Ship's Mains 100 VAC/ 115 VAC/ 200 VAC/ 220 VAC/ 240 VAC, 1

, 50-60Hz

DC/AC

Inverter

TR-2451

24 VDC

viii

System configuration of CSH-5LMARK-2

Page 11

SYSTEM CONFIGURATION

Monitor (MU-150HD, etc., Max. 2)

Processor Unit CSH-5210-A

Transceiver Unit CSH-8030-A-8L

Control Unit CSH-5211-A

Navaid Current Indicator AD Converter Speed Log E/S Interface Remote Controller Speaker

Hull Unit CSH-8040-A, 600 mm stroke CSH-8041-A, 400 mm stroke

Junction Box

CSH-1700

Motion Sensor

MS-100

Ship's Mains 100 VAC/ 115 VAC/ 200 VAC/ 220 VAC/ 240 VAC, 1

, 50-60Hz

DC/AC

Inverter

TR-2451

24 VDC

: Standard Supply : Option : User Supply

System configuration of CSH-8LMARK-2

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SYSTEM CONFIGURATION

This page is intentionally left blank.

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1. OPERATIONAL OVERVIEW

F1 F2

F3 F4

RANGE GAIN

Color Scanning Sonar

POWER

Lowers the transducer.

Raises the transducer.

Turns power

on/off.

FISH: Inscribes fish mark. EVENT: Inscribes event mark. TARGET LOCK: Tracks trackball-selected position. R/B: Displays range and bearing marks. FISH ALARM: Turns fish alarm on/off. STABILIZER: Compensates for affects of ship's pitching and rolling. (Requires Motion Sensor MS-100.) OFF CENTER: Shifts the display. ALARM ZONE: Sets fish alarm zone. DELETE MARK: Deletes selected mark. MENU: Opens/closes menu.

Execute assigned program; register function key program.

Chooses display range; chooses menu item.

Adjusts receiver sensitivity; chooses menu option.

Trackball Positions trackball mark.

Sets the tilt angle.

TILT

FISH

EVENT

TAR GET LOCK

OFF

CENTER

STABILIZER

DELETE

MARK

R/B

ALARM

ZONE

FISH

ALARM

1.1 Control Unit

All operations are carried out from the control unit. All controls quickly respond to the operator's command and the associated reaction can be seen on the screen almost immediately.

Control unit

1-1

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1. OPERATIONAL OVERVIEW

Hole for hanging

TILT Control ▲: Increases tilt angle. ▼: Decreases tilt angle.

RANGE Control ▲: Increases range. ▼: Decreases range.

Chooses menu item in menu operation.

GAIN Control ▲: Increases gain. ▼: Decreases gain.

Chooses menu option in menu operation.

1.2 Remote Controller (option)

The remote controller provides armchair control of the tilt, range and gain.

Remote controller

1-2

Page 15

1.3 Basic Operating Procedure

CAUTIONCAUTION

Do not exceed 18 knots with the transducer lowered; 16 knots when lowering the transducer.

The transducer may become damaged.

1.3.1 Turning on the power

1. Press the POWER switch on the control unit to turn on the power.

2. Turn on the monitor (user supply). The system initiates the START UP test to check itself for proper operation. The results are shown as OK or NG (No Good). For any NG, contact your dealer for advice. After the test is completed, the last-used display appears.

MAIN-0 1050842-xx.xx 1050843-xx.xx ROM = OK RAM

FPGA1 1050846-xx.xx FPGA2 1050847-xx.xx

TRX 1050850-xx.xx 1050###-xx.xx ROM = OK RAM

1050951-xx.xx F FF

= OK

VRAM = OK

= OK

1. OPERATIONAL OVERVIEW

xx.xx = Program Version No.START UP

###: 854 (CSH-8LMARK-2, 85kHz) 855 (CSH-8LMARK-2, 107kHz) 861 (CSH-5LMARK-2, 55kHz) 862 (CSH-5LMARK-2, 68kHz)

KEY-0 1050730-xx.xx F ROM = OK RAM

= OK

Self test screen at start up

1.3.2 Lowering the transducer

Set ship's speed under 16 knots and then press the  switch. The lamp above the switch flashes, and lights when the transducer is fully lowered. If you press the  switch when the speed is over 16 knots and the speed warning is turned on in the [SYSTEM] menu, the message "Max allowable speed for extended transducer is 16 kn. Max allowable speed during raising lowering transducer is 16 kn." and the audio alarm sounds. Press the R/B key to silence the audio alarm.

Note: The audio alarm may be set to sound and a message displayed when the ship's speed goes higher than maximum allowable speed. For further details, see [SPEED MESSAGE] on page 7-4.

1-3

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1. OPERATIONAL OVERVIEW

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

DISPLAY MODE : COMBI-1 NORM COMBI-2 TX OUTPUT : 8 PULSE LENGTH : 8 TX CYCLE : 10 TVG NEAR : 6 TVG FAR : 7 AGC : 2 2ND AGC : 1 NOISE LIMITER : 3 COLOR CURVE : 1 2 3 4 COLOR RESPONSE

: 1 2 3 4 DELETE COLOR : 0 ECHO AVERAGE : 1 INT REJECT : 1 HOR BEAMWIDTH : WIDE NARROW VER BEAMWIDTH : WIDE NARROW COLOR : 1 2 3 4 ERASE MARKS : TRACK SHIP EVENT FISH ALARM LEVEL : 9 AUTO TRAIN : ON OFF TRAIN SECTOR : ±10° ±20° ±40° ±60° AUTO TILT : ON OFF TILT ANGLE : ±2-10° ±4-14° ±6-20° ±10-26° TRANSMISSION : ON OFF AUDIO VOLUME : 10 ASSIGN SETTING : F1 KEY F2 KEY F3 KEY F4 KEY ASSIGN MENU : EXECUTE

PRESS [MENU] KEY TO EXIT

SYSTEM MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

1.3.3 Transmitting

[TRANSMISSION] in the [SONAR] menu is off in the default setting. If it is has been set to [ON], the procedure below is not necessary. When the transducer is lowered, transmission starts and when it is raised transmission is stopped.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR].

4. Use the RANGE control to choose [TRANSMISSION].

5. Use the GAIN control to choose [ON]. The sonar starts transmitting and the sonar picture appears.

6. Press the MENU key to close the menu.

To turn off transmission, choose [OFF] at step 5. "TX OFF" appears at the top right corner of the sonar display when the transmitter is turned off.

1-4

Page 17

1.3.4 Adjusting backlighting of control unit

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SYSTEM].

SYSTEM MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

DIMMER : 10

DISP SELECT : TEMP CURRENT

HEADING ADJ : 0°

AUTO RETRACT : OFF (OFF, 5-16kn)OFF

SPEED MESSAGE : ON OFF

EXT KP SYNC : OFF ON

AUTO TRAIN SPD : LOW HIGH

AUTO TILT SPD : LOW HIGH

UNIT : METERS FEET FATHOMS PA/BRA

SHIP'S SPD/BR :

LOG PULSE : 200 400

PORT1 BAUDRATE : 19200 9600 4800 2400

PORT1 FORMAT : NMEA CIF

PORT2 BAUDRATE : 19200 9600 4800 2400

PORT2 FORMAT : NMEA CIF

NAV DATA : GPS LC DR ALL

COMBI SCALE : RIGHT LEFT

SUB TEXT INDI : OFF ON

LANGUAGE : ENGLISH ESPANOL DANSK

NEDERLND ITALIANO

NORSK VIET

INDONESIA

ACTIVATIONCODE : EXECUTE

TEST : SINGLE CONTI PANEL COLOR

: PATTERN SIO ECHO-1 ECHO-2

ECHO-3 ECHO-4

SET TO DEFAULT : EXECUTE

LOG/GYRO

CURRENT NAV DATA

1. OPERATIONAL OVERVIEW

GYRO+NAV

PRESS [MENU] KEY TO EXIT

4. Use the RANGE control to choose [DIMMER].

5. Operate the GAIN control adjust the dimmer. The setting range is 0-10. Adjust the control clockwise to increase backlighting; counterclockwise to decrease it.

6. Press the MENU key to close the menu.

1-5

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1. OPERATIONAL OVERVIEW

Text window

Sonar display

Range and bearing marks

Text window

Audio display

Sonar display

1.3.5 Choosing a display mode

Three display modes are available: NORMAL, COMBI-1 and COMBI-2. To choose the display mode, do the following:

1. Press the MENU key to open the menu. The last-used menu is displayed.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN key to choose [SONAR].

4. Use the RANGE control to choose [DISPLAY MODE].

5. Use the GAIN control to choose desired mode among [COMBI-1], [NORM] and [COMBI-2].

6. Press the MENU key to close the menu.

Mode description

Mode Description Display

NORM (Sonar display)

COMBI-1 (Sonar + Audio)

This mode is useful for detecting and tracking schools of fish. Navigation data can be displayed in the text window, with connection of appropriate sensors.

Sonar picture appears on the left and the audio display at the lower right side of the screen. This mode is useful analyzing echoes in a desired area.To activate the [COMBI1] mode, do the following:

1) Choose the [COMBI-1] mode.

2) Use the trackball to place the trackball mark (+) on the bearing desired.

3) Press the R/B key. The range and bearing marks are inscribed on the sonar picture, and the signal along the bearing mark appears in the audio display.

COMBI-2 (Sonar + echosounder)

1-6

The sonar picture appears on the left and the signal fed from the echosounder at the lower right side of the screen. This mode is suitable for judging school of fish concentration.

Text window

Echosounder display

Sonar display

Page 19

Normal mode display (sonar display)

SHIP SPEED

12.4 kn

SHIP COURSE

246°

LAT/LON

32°52.150N

132°12.150E

DEPTH

126m

WATER CURRENT TO

1.2kn 342°

C2 0.8kn 298°

C3 0.4kn 256°

WATER TEMP

12.4°C

20min 10 0

500

R 1000 T 15

(15) G 10.0

733 708 189

B 60S

Text Window

For description see Chapter 5.

500

R 1000 T 15

(15) G 10.0

517 500 134

B 60S

R 517 B 60S

Range & Bearing Marks

WATER TEMP

12.4°C

20min 10 0

Range Scale

SHIP SPEED

12.4 kn

DEPTH

126m

SHIP COURSE

246°

LAT/LON

32°52.150N

132°12.150E

500 -

1000-

Text Window For description see Chapter 5.

Range and bearing marks data

1. OPERATIONAL OVERVIEW

Sonar display

COMBI-1 display (sonar display + audio display)

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Page 20

1. OPERATIONAL OVERVIEW

Text Window For description see Chapter 5.

500

R 1000 T 30

(30) G 10.0

545 472 272

B 60S

Bottom

School of Fish

Depth Scale

WATER TEMP

12.4°C

20min 10 0

SHIP SPEED 12.4 kn DEPTH 126m SHIP COURSE 246°

LAT/LON 32°52.150N

132°12.150E

100 -

200 -

COMBI-2 display (sonar display + echosounder display)

1.3.6 Choosing the display range

The RANGE control chooses a display range. Each time the range is changed the newly selected range appears in large characters for five seconds at the top of the sonar display. The current range is always displayed at the top right corner of the sonar display. The ranges (in meters) available are 50, 85, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 800, 1000, 1200 and 1600.

Surface

Range displayed on screen

Bottom

Detection Range

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Page 21

1.3.7 Adjusting the gain

The GAIN control adjusts receiver sensitivity. It should be adjusted to see fish echoes clearly with minimal noise on the screen. Too high a setting not only causes excessive noise on the screen and makes it difficult to discriminate wanted fish echoes but also causes bottom echoes to be painted in strong colors, resulting that the echoes from bottom fish are masked by bottom reflections. A setting between 3 and 7 is usually suitable. Each time the control is operated the newly selected gain appears in large characters for five seconds at the top of the sonar display. The current gain is always displayed at the top right corner of the sonar display.

Gain too low Gain proper Gain too high

1. OPERATIONAL OVERVIEW

Examples of proper and improper gain

1.3.8 Retracting the transducer, turning off the power

1. Set speed under 16 knots and then press the  switch to retract the transducer.

The lamp above the switch blinks while the transducer is being retracted. Transmission is stopped automatically. If you press the  switch when the speed is over 16 knots and the speed warning is turned on in the [SYSTEM] menu, the message "Max allowable speed for extended transducer is 16 kn. Max allowable speed during raising lowering transducer is 16 kn." and the audio alarm sounds. Press the R/B key to silence the audio alarm.

2. When the lamp above the  switch goes off, meaning the transducer is completely

retracted, press the POWER switch on the control unit to turn off the power.

3. Turn off the monitor.

Note 1: The transducer is automatically retracted into the tank whenever the power switch is turned off. However, for safety purposes, make it a habit to retract the transducer before turning off the power.

Note 2: The equipment can be set to automatically retract the transducer when the ship exceeds the operator-set speed. (Speed data required.) The transducer may be retracted at a different speed than set if the speed data is different from actual speed. In all cases, reduce the speed below 16 knots and then retract the transducer.

1-9

Page 22

1. OPERATIONAL OVERVIEW

1.4 Setting the Tilt Angle

The tilt angle shows the direction to which the sound wave is emitted. When the sound wave is emitted horizontally, it is said to be zero (0) degrees and when emitted vertically, 90 degrees.

To set a tilt angle, operate the TILT lever for the desired angle while watching the tilt angle indication at the top right corner of the sonar display. Each time the lever is operated the newly selected tilt angle is displayed in large characters for five seconds at the top of the sonar display. The tilt angle can be set in one-degree steps within the range of 0 to 55 degrees.

Transducer

+55°

1.4.1 Automatic tilt on/off

0° Horizontal direction (tilt: 0)

Tilt angle range

The automatic tilt feature automatically tilts the transducer within the tilt range selected on the menu. This feature is useful for finding school of fish center.

Automatic tilt becomes inoperative when the target lock feature is made active. Disable the target lock feature to resume automatic tilt.

1. Press the MENU key to open the menu.

2. Operate the RANGE control to choose [MENU MODE] at the top of the screen.

3. Operate the GAIN control to choose [SONAR].

4. Operate the RANGE control to choose [AUTO TILT].

5. Operate the GAIN control to choose [ON].

6. Operate the RANGE control to choose [TILT ANGLE].

7. Use the GAIN control to choose a tilt range among [±2-10°], [±4-14°], [±6-20°], and [±10-26°]. See the table on the next page for range and tilt angle.

8. Press the MENU key to close the menu. When auto tilt is on, auto tilting begins with the range selected (at step 7), centered on the tilt angle set with the TILT lever.

To turn off automatic tilt, choose [OFF] at step 5. Note that automatic tilt range varies with the range in use.

1-10

Range and tilt angle

Range (m) ±2-10° ±4-14° ±6-20° ±10-26°

50, 85, 100, 150, 200, 250, 300, 350 400, 450, 500 600, 800 1000, 1200, 1600

±10° ±8° ±6° ±2°

±14° ±12° ±10° ±14°

±20° ±16° ±14° ±6°

±26° ±20° ±20° ±10°

Page 23

For example, when the RANGE control, TILT lever and automatic tilt are set to 1000 m, 8° and ±2-10° respectively, the tilt angle changes at each transmission as follows: 8°  10°  8°  6°  8°  …

1.4.2 Bottom and tilt angle

Finding the proper tilt angle is of utmost importance when searching for fish, especially in coastal water fishing, where the depth of the fishing ground is from 50-100 m. In this type of fishing ground it is imperative that the bottom echo be always displayed to properly distinguish between fish and the bottom. When selecting a tilt angle, keep the following points in mind.

1. OPERATIONAL OVERVIEW

Tilt Angle

Auto tilt concept

Case 1: Tilt angle 30 to 40 degrees

This tilt angle uses the full beamwidth to receive echoes, thus the entire bottom echo is displayed. Fish echoes may be hidden in the bottom echo.

Case 2: Tilt angle 10 to 20 degrees

This tilt angle receives bottom echoes within the bottom half of the beam. Fish echoes astern of the bottom echo are displayed.

Case 3: Tilt angle 0 to 5 degrees

This tilt angle may or may not display returning echoes. Fish echoes near the bottom echo are displayed.

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Page 24

1. OPERATIONAL OVERVIEW

Bottom

Case 1 Case 2 Case 3

School of fish (a) School of fish (a) School of fish (a)

Case 1 Case 2 Case 3

Bottom Bottom

(b)

1.4.3 How to discriminate fish echoes from the bottom

The following figure illustrates how two schools of fish (a) and (b) are displayed on screen using three different tilt angles.

Case 1: Tilt angle 30 to 40 degrees

School of fish is obscured by the bottom echo.

Case 2: Tilt angle 10 to 20 degrees

School of fish is located above the bottom echo (midwater).

Case 3: Tilt angle 0 to 5 degrees

School of fish is located close to the bottom echo.

How to discriminate fish echoes from bottom

1.4.4 Points to consider

• As a general rule of thumb, a vertically distributed school of fish is a better sonar

target than a horizontally one, since it reflects the transmitted pulse back toward to the source.

• In case 3, both schools of fish (a) and (b) are presented. Generally speaking, how-

ever, midwater schools of fish tend to be larger than bottom schools of fish and they are often displayed near the bottom on the sonar screen.

• Detection of bottom fish is difficult if they are not distributed vertically.

1.4.5 Tilt angle for surface fish

Sound emitted from the sonar transducer forms a circle-shaped beam with a width of approximately 15°* (-6dB in the vertical direction). The tilt angle is indicated by the angle between the center line of the beam and the horizontal plane. Then, if the tilt angle is set to 0 degrees, the center line is parallel with the sea surface and one half of the emitted sound goes upward toward the sea surface.

This causes a half of the emitted sound to be reflected back toward the transducer and displayed on the screen as sea surface reflections. When the sea is calm, since the

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Page 25

1. OPERATIONAL OVERVIEW

Sea surface

Tilt angle 0°

Tilt angle 5-6°

15°

100

(200)

200

(400)

300

(600)

400

(800)

0°

5°

10°

15°

20(40)

40(80)

60(120)

80(160)

100(200)

200(400)

100 m

300 m

78 m

200 m

13°

23 m

100 m

300 m

68 m

200 m

46 m

52 m

26 m15°

Tilt angle setting Detection range (m)

Depth (m)

Vertical width of sonar beam

CSH-5LMARK-2

CSH-8LMARK-2

sound is reflected just like a light hitting a mirror at a narrow 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 will interfere with observation of wanted echoes. To minimize these sea surface reflections and to search surface schools of fish effectively, the tilt angle is usually set to 5-6 degrees so that the upper portion of the beam becomes almost parallel with the sea surface. When the sea is rough, it is often set to a little larger angle.

*: 15° for CSH-5LMARK-2, 13° for CSH-8LMARK-2

Tilt angle and surface fish (example: CSH-5LMARK-2)

1.4.6 Suitable tilt angle

The table below shows the estimated detection range for tilt angles of 0, 5, 10 and 15 degrees. Refer to the table to find suitable tilt angle from depth and detection range.

Depth, detection range and tilt angle

1-13

Page 26

1. OPERATIONAL OVERVIEW

Slant range from own ship to trackball mark Horizontal range from own ship to trackball mark Depth to trackball mark B Relative from own ship to trackball mark*

TRACKBALL DATA

* = Relative bearing format may be selected with

[OTHER MARKS] on the [MARKS] menu.

Trackball mark

Own ship mark

1.5 Finding Range and Bearing to a Target

Operate the trackball to place the trackball mark on the target you want to measure the range and bearing. The slant range, horizontal range, bearing and depth to the target appear at the upper left corner of the sonar display.

Location of trackball data

1-14

Page 27

1.6 Sonar Menu Overview

This equipment has four menus: sonar menu, sounder menu, marks menu and system menu. Of the four menus, the [SONAR] menu is the one you will use most often.

Note that the gain and range cannot be adjusted while the menu is displayed.

1.6.1 Operating procedure

1. Press the MENU key. The last-used menu appears.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

SONAR MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

DISPLAY MODE : COMBI-1 NORM COMBI-2

TX OUTPUT : 8

PULSE LENGTH : 8

TX CYCLE : 10

TVG NEAR : 6

TVG FAR : 7

AGC : 2

2ND AGC : 1

NOISE LIMITER : 3

COLOR CURVE : 1 2 3 4

COLOR RESPONSE

DELETE COLOR : 0

ECHO AVERAGE : 1

INT REJECT : 1

HOR BEAMWIDTH : WIDE NARROW

VER BEAMWIDTH : WIDE NARROW

COLOR : 1 2 3 4

ERASE MARKS : TRACK SHIP EVENT FISH

ALARM LEVEL : 9

AUTO TRAIN : ON OFF

TRAIN SECTOR : ±10° ±20° ±40° ±60°

AUTO TILT : ON OFF

TILT ANGLE : ±2-10° ±4-14° ±6-20° ±10-26°

TRANSMISSION : ON OFF

AUDIO VOLUME : 10

ASSIGN SETTING : F1 KEY F2 KEY F3 KEY F4 KEY

ASSIGN MENU : EXECUTE

: 1 2 3 4

1. OPERATIONAL OVERVIEW

PRESS [MENU] KEY TO EXIT

4. Use the RANGE control to choose a menu item. The selected item is highlighted.

5. Use the GAIN control to choose the option desired.

6. To close the menu, press the MENU key.

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Page 28

1. OPERATIONAL OVERVIEW

1.6.2 Sonar menu description

Description of sonar menu

Item Description Ref. page

DISPLAY MODE Chooses the display mode among, [COMBI-1] (NORM

+ Audio), [NORM] (Sonar) and [COMBI-2] (NORM + Echosounder).

TX OUTPUT Adjusts transmitter power. 2-4

PULSE LENGTH Chooses pulse length. 2-3

TX CYCLE Removes interference caused by other sonars operat-

ing nearby.

TVG NEAR Adjusts receiving gain within 300 m. 2-1

TVG FAR Adjusts receiver gain beyond 300 m. 2-1

AGC Automatically reduces the receiver gain only against

strong echoes such as the bottom or a large

fish

, to suppress bottom tail.

2ND AGC Suppresses bottom echo. 2-3

NOISE LIMITER Suppresses unwanted reflections caused by sediments

in water, plankton or ship's noise.

COLOR CURVE Adjusts echo presentation color curve against strong

reflections. In setting "1," for example, weak to strong signals are averaged and displayed to obtain a balanced picture. The larger the setting the better the resolution on weak signals.

school of

1-6

2-6

2-2

2-5

—

COLOR RESPONSE

DELETE COLOR Erases desired echo level from the display. 2-7

ECHO AVERAGE

INT REJECT Rejects random noise and sea surface reflections in

HOR BEAMWIDTH

VER BEAMWIDTH

COLOR Chooses display colors for the sonar and audio dis-

ERASE MARKS Chooses the mark type to erase collectively, from track,

Adjusts color level against strong reflections. The higher the setting, the more the red color is displayed and weak level colors are displayed as is, thereby giving the appearance that the gain has been raised.

Specifies how long to leave afterglow on the screen. 2-7

rough sea conditions.

Sets horizontal beamwidth for wide or narrow. 2-7

Sets vertical beamwidth for wide or narrow. 2-7

plays, among four choices. Choose a display color to match your environment or fishing objective.

own ship, event and fish. For track, 10% of the oldest track is erased.

—

2-5

—

3-7

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Page 29

1. OPERATIONAL OVERVIEW

Item Description Ref. page

ALARM LEVEL Sets echo strength level which triggers the fish alarm.

The lower the setting the weaker the echo which triggers the alarm.

AUTO TRAIN Turns automatic transducer training on or off. 3-2

TRAIN SECTOR Chooses train sector in automatic training. 3-2

AUTO TILT Turns automatic tilt on or off. 1-10

TILT ANGLE Sets automatic tilt range. 1-10

TRANSMISSION Turns transmission on or off. 1-4

AUDIO VOLUME Sets audio volume of loudspeaker. 3-2

ASSIGN SETTING

ASSIGN MENU Displays programs assigned to function keys. 3-9

Chooses function key to program. 3-8

3-3

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Page 30

1. OPERATIONAL OVERVIEW

This page is intentionally left blank.

1-18

Page 31

2. FINE TUNING THE SONAR PIC-

NEAR

FAR

300 m

TURE

2.1 Eliminating Unwanted 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 when their reflecting properties are nearly equal. The sonar operator will be quite inconvenienced if these echoes are directly displayed on the screen, since the actual size of the target cannot be judged from the size of echoes displayed on the screen. To overcome this inconvenience, the TVG function is incorporated. It compensates for propagation loss of sound in water; amplification of echoes on short rang is suppressed and gradually increased as range increases so that similar targets are displayed in the similar intensities irrespective of the ranges to them.

The CSH-5LMARK-2/CSH-8LMARK-2 incorporates two TVG functions, NEAR and FAR, and they mainly compensate for propagation loss on short and long ranges respectively, centered at the ranges shown below.

How TVG works

The TVG is also used to suppress unwanted echoes and noise which appear in a certain range area on the screen such as sea surface reflections and cruising noise. To obtain the proper TVG setting, follow the procedure below.

1. Press the MENU key.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [TVG NEAR].

5. Use the GAIN control to adjust gain.

6. Use the RANGE control to choose [TVG FAR].

7. Use the GAIN control to adjust [TVG FAR] (setting range: 0-10).

8. When sea surface reflections or plankton layers disturb the picture, adjust [TVG NEAR] to eliminate them. They will be eliminated by decreasing the setting by "1" or "2."

9. On a long range, locate a school of fish which is approaching own ship. Note that the tilt should be kept adjusted so that the school of fish is always placed in the center of the sonar beam, i.e., so that the school of fish is displayed in strongest colors possible. Check that the fish echo is displayed in the same color while it ap-

2-1

Page 32

2. FINE TUNING THE SONAR PICTURE

proaches. If the color changes suddenly to weaker colors as the fish echo enters FAR and NEAR areas, the TVG is improperly set. Adjust the TVG to correct it. If this again produces sea surface reflections and noise, try to remove them with the AGC and noise limiter as described later on.

10. Press the MENU key to close the menu.

2.2 Displaying Surface Fish Clearly

When you are searching for surface fish with the tilt set to a narrow angle, sea surface reflections may disturb or mask wanted fish echoes. In this case, in addition to the TVG adjustment described earlier, adjust [AGC] on the [SONAR] menu. Normally set it between "0" and "3."

2.3 Suppressing Bottom Tail

As noted earlier, schools of fish (echoes) located near the bottom are sometimes difficult to detect because you have to discriminate them from the bottom reflections. [AGC], [PULSE LENGTH] and [2ND AGC] in the [SONAR] menu, if used properly, decrease the tail of bottom reflections, making it easier to discriminate bottom fish.

2.3.1 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 the AGC so it works only on bottom reflections.

1. Press the MENU key.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [AGC].

5. Use the GAIN control to set AGC value. The setting range is 0-10 and the higher the setting the stronger the AGC effect.

6. Press the MENU key to close the menu.

2-2

Page 33

2.3.2 Pulse length

The pulse length control 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, i.e., ability to separate several closely located targets. When searching bottom fish, therefore, it is useful to shorten the pulselength in order to separate fish echoes from bottom reflections. For search of surface and midwater fish in which bottom reflections are not so strong, the longest pulse length "10" should be used.

1. Press the MENU key.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [PULSE LENGTH].

5. Use the GAIN control to set pulse length. The setting range is 0-10 and the higher the setting the longer the pulse length.

6. Press the MENU key to close the menu.

2. FINE TUNING THE SONAR PICTURE

2.3.3 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 key. The last-used menu appears.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [2ND AGC].

5. Use the GAIN control to set 2ND AGC. The setting range is 0-10 and the higher the setting the greater the 2ND AGC effect.

6. Press the MENU key to close the menu.

2-3

Page 34

2. FINE TUNING THE SONAR PICTURE

Improper

Proper

Bottom echo masks fish echo.

TVG and AGC adjusted, OUTPUT high.

OUTPUT decreased, gain maintainted

Fish echo

Fish echo weakened

2.4 Suppressing Bottom and Sea Surface Reflections in Shallow Fishing Grounds

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, especially when the tilt angle is large in order to track schools of fish approaching within 400 m. In such cases try to reduce the output power without turning down the gain. The picture becomes clearer when the output power is reduced rather than when the gain is decreased as illustrated below.

1. Press the MENU key. The last-used menu appears.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [TX OUTPUT].

5. Use the GAIN control to set TX output. The higher the setting (setting range: 0-

10) the greater the TX power.

6. Press the MENU key to close the menu.

For long-range detection, set [TX OUTPUT] to 10.

How to adjust TX output

2-4

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2. FINE TUNING THE SONAR PICTURE

2.5 Rejecting 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.

2.5.1 Identifying noise source

To eliminate noise effectively, you should first identify the noise source.

• Turn off [TRANSMISSION] in the [SONAR] menu to stop transmission and operate all on board equipment one by one while observing the picture.

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

If neither of the above two steps affects on the picture, adjust the [INT REJECT] (Interference Rejector), [NOISE LIMITER] or [TX CYCLE] on the [SONAR] menu as appropriate.

2.5.2 Rejecting noise with the 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 the interference rejector so that noise is just eliminated. Do not use an unnecessarily high setting since small wanted echoes may also be rejected.

1. Press the MENU key.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [INT REJECT].

5. Use the GAIN control to set interference rejection level, from 0 (OFF) to 3 (highest

degree of suppression).

6. Press the MENU key to close the menu.

2.5.3 Rejecting noise with the noise limiter

Weak, unwanted reflections, colored light blue or green, are displayed when water is contaminated or plankton layers exist or due to ship's noise.

1. Press the MENU key. The last-used menu appears.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [NOISE LIMITER].

5. Use the GAIN control to set noise limiter level. The setting range is 0-10 and the

higher the figure the greater the degree of suppression.

6. Press the MENU key to close the menu.

2-5

Page 36

2. FINE TUNING THE SONAR PICTURE

Interference

Tx cycle high Tx cycle lowered

2.5.4 Rejecting interference with TX cycle

When other sonars of the same TX frequency as own sonar are near, an interference ring caused may be displayed. To erase the interference ring from the screen, reduce the TX CYCLE setting.

Interference rings

1. Press the MENU key.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR] to display the [SONAR] menu.

4. Use the RANGE control to choose [TX CYCLE].

5. Use the GAIN control to set TX cycle. The setting range is 0-10 and the higher the figure the longer the TX cycle.

6. Press the MENU key to close the menu.

Note: When the sonar is used in shallow waters with the range set between 100 m and 200 m and the TX cycle at "10", a previously reflected echo may appear at close range. In this case reduce the TX cycle to "7 or 8" to reject it.

2-6

Page 37

2.6 Choosing Beamwidth

2.6.1 Horizontal beamwidth

If you wish to have better bearing discrimination (ability to distinguish two closely located targets at the same range and different bearings) for schools of fish and also wish to examine the contour of bottom, set [HOR BEAMWIDTH] to [NARROW], on the [SONAR] menu.

2.6.2 Vertical beamwidth

For better bearing discrimination in the vertical direction, set [VER BEAMWIDTH] to [NARROW], on the [SONAR] menu.

2.7 Deleting Weak Echoes

You can remove weak echoes to clear the picture. Echoes are deleted by strength so this feature is useful for observing only large schools of fish or suppressing interference.

2. FINE TUNING THE SONAR PICTURE

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR].

4. Use the RANGE control to choose [DELETE COLOR].

5. Use the GAIN control to choose setting. The setting range is 0-10 and the higher the number the stronger the echo that will be erased.

6. Press the MENU key to close the menu.

2.8 Echo Averaging

You may adjust echo afterglow to follow echo movement. The higher the setting the longer the afterglow remains on the screen.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR].

4. Use the RANGE control to choose [ECHO AVERAGE].

5. Use the GAIN control to choose setting. The setting range is 0 (OFF) to 3 and the higher the setting the longer echoes remain on the screen.

6. Press the MENU key to close the menu.

2-7

Page 38

2. FINE TUNING THE SONAR PICTURE

This page is intentionally left blank.

2-8

Page 39

3. ADVANCED SONAR OPERATION

A B C D

Depth

55° 55°

3.1 Tracking a School of Fish (target lock)

Target lock, which requires speed and heading inputs, automatically tracks a fixed location (such as a reef) so that you won't lose sight of it on the display screen.

1. On the sonar display, operate the trackball to place the trackball mark on the location you want to track.

2. Press the TARGET LOCK key. The target lock mark appears ( ) on the echo selected and the bearing mark bisects the echo. Horizontal range, depth and bearing to the target appear at the

bottom right hand corner of the sonar display. Note that target lock is automatically cancelled when the echo moves 1.5 times the range in use.

Target Lock Mark

Target Lock Data

650 (Horizontal range from own ship to target) 153 (Depth of target)

Target lock bearing mark

Target lock mark and target lock data

3. To cancel target lock and erase the target lock mark and bearing mark, press the

TARGET LOCK key again.

Note 1: If automatic tilt is active it is automatically canceled. It is resumed once target

lock is disabled.

Note 2: Target lock feature is canceled when the position selected is more than

1.5 times the range.

Note 3: The target lock feature tracks a target up to 55° tilt angle. For example, if a ship moves from position A to position D, the target lock works between positions A and B. The tilt angle is fixed between positions B and C is 55°, however calculation continues internally. Target lock is restarted after position C.

NNE (Relative bearing to target*)

* Relative bearing format may be selected with [OTHER MARKS] on the [MARKS] menu. ** Any value which exceeds 9999 is displayed with four asterisks (****).

Target lock and tilt angle

3-1

Page 40

3. ADVANCED SONAR OPERATION

3.2 Detecting 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 built-in speaker.

After you've become accustomed to monitoring fish aurally, you should be able to detect a school of fish from a range longer than you can detect it on the screen.

1. Operate the trackball to place the trackball mark on the direction you want to monitor through the speaker. (If the trackball mark is placed on the own ship mark when the R/B key is pressed, the range and bearing marks and range and bearing marks data are erased.)

2. Press the R/B key. The bearing mark appears on the bearing selected with the trackball mark. Listen to echoes through the loudspeaker. You may adjust the volume of the loudspeaker with [AUDIO VOLUME] on the [SONAR] menu.

3. To change aural coverage area, do the following:

a) Press the MENU key to open the menu.

b) Use the RANGE control to choose [MENU MODE] at the top of the screen.

c) Use the GAIN control to choose [SONAR].

d) Use the RANGE control to choose [AUTO TRAIN].

e) Use the GAIN control to choose [ON].

f) Use the RANGE control to choose [TRAIN SECTOR].

g) Use the GAIN control to choose train sector among [±10°], [±20°], [±40°] and

[±60°].

Train Sector

Bearing Mark

Range Mark

R 400 B 45S*

Range and bearing marks data

3-2

* = Relative bearing format may be chosen with [OTHER MARKS] in the [MARKS] menu.

h) Press the MENU key to close the menu. Then, automatic training starts, cen-

tered on the bearing mark.

To turn off automatic training, choose [OFF] at step e).

Page 41

3.3 The Fish Alarm

Starting Point

Ending Point

Alarm Area

The fish alarm generates an audio alarm when a fish echo above a certain strength enters the alarm zone.

1. Operate the trackball to place the trackball mark on the starting point of the alarm zone.

2. Press the ALARM ZONE key.

3. Operate the trackball to place the trackball mark on the starting point of the alarm zone.

4. Press the ALARM ZONE key. The display paints a fan-shaped alarm zone. The audio alarm will be released when an echo enters the alarm zone.

3. ADVANCED SONAR OPERATION

Fish alarm zone

Note 1: There must be at least three degrees difference between the starting and end points to get a fan-shaped alarm zone as shown in (a) and (b) below. Otherwise, a 360° alarm zone is painted as in (c) and (d).

More than 3°

(a) (b) (c) (d)

Fish alarm zones

Note 2: You may set the echo strength level which will release the audio alarm with [ALARM LEVEL] on the [SONAR] menu. The setting range is 0-14.

Note 3: To show or erase the alarm zone, press the FISH ALARM key.

Within 3°

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3. ADVANCED SONAR OPERATION

Latest Fish Mark

Place trackball mark on fish echo and press the FISH key.

Wait 1-2 minutes

Past Fish Mark (Max. 8)

2nd Latest Fish Mark

Latest Fish Mark

Place trackball mark on fish echo's latest location and press the FISH key.

FIsh Mark Data

1076 (Horizontal range between fish marks)

787 (Horizontal range from own ship to fish mark) 153 (Depth)

C E/S (Course*)

→

* Course display format may be selected with [EVENT/FISH] on the [MARKS] menu. ** Any value which exceeds 9999 is displayed with four asterisks (****).

3.4 Measuring Speed of 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. If the tidal current data is used together with fish speed data, you can determine the timing of the net shooting more efficiently. This function requires speed and heading inputs.

3.4.1 Entering a fish mark

1. Place the trackball mark on the center of a school of fish, and then press the FISH key. The latest fish mark ( ) appears on the school of fish.

2. Wait 1 to 2 minutes.

3. Place the trackball mark on the same school of fish selected at step 1, and then press the FISH key.

The latest fish mark ( ) appears on the target and the 2nd latest fish mark ( ) appears on the location selected at step 1. In addition, the range between the two

fish marks, horizontal range from own ship to the latest fish mark and the speed and course of the school of fish are shown at the bottom right corner of the sonar display.

3-4

Note 1: Movement is calculated using ship's speed and heading. Accordingly, pitching

and rolling may affect the calculation. For more accurate measurement, repeat the procedure two or three times to verify reliability of the data.

Note 2: The time and distance between pressings of the FISH key should be as long

Fish mark and fish mark data

as possible to increase accuracy of measurement. For more accurate measurement, repeat the procedure two or three times.

Page 43

3. ADVANCED SONAR OPERATION

School of Fish

Trackball Mark

Press

OFFCENTER

key.

Own Ship Mark

Note 3: Each time the FISH key is pressed the fish mark changes in the sequence shown below. Maximum 10 fish marks may be inscribed, one latest, one 2nd latest and eight past. When this amount is exceeded the oldest fish mark is automatically erased.

Fish key pressed once:

Fish key pressed twice:

Fish key pressed three times:

Fish key pressed four times:

3.4.2 Deleting individual fish marks

To delete specific fish marks, use the DELETE MARK key as shown below. To delete fish marks collectively, see paragraph 3.7.

1. Operate the trackball to place the trackball mark on the fish mark you want to delete. The color of the fish mark changes from white to red if the trackball mark is correctly placed.

2. Press the DELETE MARK key to delete the fish mark.

3.5 Relocating School of Fish for Easy Observation

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

2. Press the OFF CENTER key.

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

How to use the off-center function

3-5

Page 44

3. ADVANCED SONAR OPERATION

You observe picture from direction of mark.

Stored when EVENT key is pressed.

(35)

→234 : Horizontal range (m) from own ship mark to mark ↓ 121 : Depth (m) to mark ( 121) : Depth (m) of mark at moment EVENT key is pressed. B SW/W : Bearing (degree)*

* Bearing format may be selected with [EVENT/FISH] on the [MARKS] menu.

** Any value which exceeds 9999 is displayed with four asterisks (****).

3.6 Event Mark, Own Ship Position Mark

3.6.1 Event mark

The event mark, which requires speed and heading data, is useful for finding the horizontal range, depth and bearing to a location some distance from current position.

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 present geographical location, but the mark on the display moves to a point where present beam plane intersects the anchor chain of the buoy as the ship moves or the tilt angle is changed. This can be said of other marks as well such as fish mark and trackball mark.

How to use the event mark

Entering an event mark

1. Operate the trackball to place the trackball mark where you want to place an event mark (latest event mark).

2. Press the EVENT key. The horizontal range, depth and bearing to the event mark appear at the bottom left corner of the sonar display. Event mark position is calculated from ship's speed and heading data and it moves on the screen with own ship's movement. With connection of a navigator, the latitude and longitude of the event mark are output to the navigator when an event mark is entered, in NMEA format TLL sentence.

Event mark data, shown at bottom left corner of the display

3-6

Page 45

Each time the key is pressed the appearance of the event marks changes as be-

→→ →

→→

→

2 1

3 2 1

This data is used to display latest event mark data.

Latest Event Mark

Past Event Mark

First press of the EVENT key

2nd press of the EVENT key

3rd press of the EVENT key

4th press of the EVENT key

low. Ten marks may be entered. When this amount is exceeded the oldest event mark is automatically erased.

Event marks

3.6.2 Entering an own ship position mark

Operate the trackball to place the trackball mark on the own ship mark and press the EVENT key to inscribe an own ship position mark. 10 own ship position marks () may be entered. When this amount is exceeded the oldest own ship position mark is automatically erased.

3. ADVANCED SONAR OPERATION

3.6.3 Deleting an event mark

You may delete specific event mark as follows:

1. Operate the trackball to place the trackball mark on the event mark or own ship position mark you want to delete. The color of the mark changes from white to red if the trackball mark is correctly placed.

2. Press the DELETE MARK key to delete the mark.

3.7 Collectively Deleting Marks

You may collectively delete track, event marks or fish marks as shown below. Own ship position mark may be also be deleted, one by one.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SONAR].

4. Use the RANGE control to choose [ERASE MARKS].

5. Use the GAIN control to choose item to delete: [TRACK], [SHIP], [EVENT] or [FISH].

[TRACK]: The oldest 10% of the ship's track is erased with each press of the

EVENT key.

[SHIP]: The oldest own ship mark is deleted with each press of the EVENT

key.

[EVENT], [FISH]: All corresponding marks are erased when the EVENT key is

6. Press the EVENT key to delete all of the mark type selected at step 5.

pressed.

7. Press the MENU key to close the menu.

3-7

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3. ADVANCED SONAR OPERATION

ERASE MARKS

TRACK SHIP EVENT SHIP

ARE YOU SURE TO CHANGE? NO YES PRESS [EVENT] KEY TO EXECUTE

3.8 Function Keys (F1-F4)

A function key may be programmed two ways: set up the equipment according to fishing ground or target fish, or provide a shortcut for a menu item on the [SONAR] or [SOUNDER] menu.

Sonar Menu Item Function Key

F1 F2 F3 F4 Default program TX OUTPUT 8 10 8 10 F1: Short-range detection PULSE LENGTH 7 10 7 10 F2: Long-range detection TX CYCLE 10 10 10 10 F3: Short-range detection TVG NEAR 6 5 6 5 F4: Long-range detection TVG FAR 6 8 6 8 HOR BEAMWIDTH Narrow Narrow Narrow Narrow VER BEAMWIDTH Wide Narrow Wide Narrow COLOR CURVE 4 1 4 1 COLOR RESPONSE 2 4 2 4

3.8.1 Operating the function keys

1. Press desired function key. The equipment is set according to function key program, or a dialog box appears in case of shortcut operation. For shortcut operation, go to step 2. The illustration below shows the [ERASE MARKS] dialog box.

2. Press the same function key again within five seconds to set value or choose option. (Be sure to press the function key within five seconds; the dialog box is automatically erased after five seconds.) In case of the [SONAR] menu item [ERASE MARKS] use the function key to choose the item to erase and then press the EVENT key to erase.

[ERASE MARKS] dialog box

3.8.2 Programming for fishing ground or target fish

1. Set up controls on the control unit according to fishing ground or target fish.

2. Press the MENU key to open the menu.

3. Use the RANGE control to choose [MENU MODE].

4. Use the GAIN control to choose [SONAR].

5. Set all menu items (except [TRANSMISSION]) as appropriate.

6. Use the RANGE control to choose [ASSIGN SETTING].

7. Use the GAIN control to choose the function key (F1-F4) you want to program.

8. Press the EVENT key to program. The message shown below appears.

9. Use the GAIN control to choose [YES].

10. Press the EVENT key again. The function key selected at step 7 is programmed.

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3. ADVANCED SONAR OPERATION

11. Press the MENU key to close the menu.

Useful programs (main items only)

For detecting surface fish For detecting bottom fish For detecting midwater fish

TX OUTPUT 8 TX OUTPUT 7 TX OUTPUT 8

PULSE LENGTH 7 PULSE LENGTH 5 PULSE LENGTH 8

TX CYCLE 10 TX CYCLE 10 TX CYCLE 10

TVG NEAR 5 TVG NEAR 5 TVG NEAR 6

TVG FAR 5 TVG FAR 6 TVG FAR 7

HOR BEAMWIDTH Narrow HOR BEAMWIDTH Narrow HOR BEAMWIDTH Narrow

VER BEAMWIDTH Narrow VER BEAMWIDTH Wide VER BEAMWIDTH Wide

COLOR CURVE 1 COLOR CURVE 4 COLOR CURVE 3

COLOR RESPONSE 3 COLOR RESPONSE 1 COLOR RESPONSE 3

3.8.3 Programming specific function

You may program a function key with a menu item from the [SONAR] or [SOUNDER] menu to use as shortcut. Most items are available except [TRANSMISSION], [ASSIGN SETTING] and [ASSIGN MENU] from the [SONAR] menu and [DRAFT] from the [SOUNDER] menu.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE].

3. Use the GAIN control to choose [SONAR] or [SOUNDER] as appropriate.

4. Use the RANGE control to choose item.

5. Press appropriate function key until the message "COMPLETED" appears (more than three seconds).

6. Press the MENU key to close the menu.

3.8.4 Confirming function key program

You may confirm function key program as below.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE].

3. Use the GAIN control to choose [SONAR].

4. Use the RANGE control to choose [ASSIGN MENU]. The current programs are shown at the top of the menu.

F1 F1 KEY F2 F2 KEY F3 TVG NEAR F4 TVG FAR

Function key assignment confirmation screen

5. Press the MENU key to close the menu.

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3. ADVANCED SONAR OPERATION

Displayed

No pitching and rolling

Not displayed (You want to display this school of fish)

Ship is pitching and rolling

Ship tilts in bow direction

Not displayed

Tilt angle compensated

Stabilizer activated on front beam

Stabilizer turned ON (Tilt angle compensated in one direction only. Echo in opposite direction is not displayed.)

Not displayed

Beam before stabilizer activated

Displayed

Stabilizer ON

Stablizer Mark Picture is stabilizer on bearing chosen with this mark.

Stablizer bearing data

STAB

B 45S

3.9 Suppressing Effects of Pitching and Rolling (Stabilizer)

The Motion Sensor MS-100 (option) compensates for the affects of pitching and rolling to provide steady, non-fading pictures, along the bearing selected. Follow the procedure below to use the stabilizer feature.

How the stabilizer works

1. Operate the trackball to place the trackball mark on the bearing where you want

the stabilizer the picture.

2. Press the STABILIZER key. The stabilizer mark, a dashed line extending from the

screen center to the edge of the effective diameter of the sonar display, appears on the bearing selected and "STAB" appears at the top right corner of the sonar display.

Stabilizer mark

Note: If the target lock function is active when the stabilizer is turned on, the stabilizer works on the bearing selected for the target lock feature (target lock function has higher priority) and the stabilizer mark is not displayed. Even when target lock is deactivated the stabilizer operates on the bearing selected for target lock.

3-10

3. To turn off the stabilizer, press the STABILIZER key. The stabilizer mark, stabiliz-

er indication and stabilizer bearing data are erased. If range and bearing marks are shown they are displayed along with their data.

Note 1: The tilt angle can be manually set in the range of 0-55°, however pitching and rolling are compensated within the ±20° in the tilt angle range of 0 to 55°.

Note 2: If the target lock is activated while the stabilizer is on, the bearing set for target lock will be used with the stabilizer as well and the stabilizer mark is erased. When the target lock is turned off, the bearing set before target lock was turned on is used and the stabilizer mark reappears at the bearing originally selected.

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4. ECHOSOUNDER MODE

Shift

Display

This chapter covers operation of the echosounder picture, which may be displayed by choosing the [COMBI-2] mode.

4.1 Choosing the Range

The basic range and range shifting functions together give you the means to select the depth you can see on the screen. The basic range can be thought of as providing a "window" into the water column and range shifting as moving the "window" to the desired depth.

Display range and shift concept

Note: Select the Range and Shift to the same setting as the echo sounder connected. This setting does not affect the original echo sounder setting.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

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4. ECHOSOUNDER MODE

SOUNDER MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

COLOR : 1 2 3 4

RANGE : 160

SHIFT : 0

E/S INT REJECT : ON OFF

GAIN : 3.0

CLUTTER : 2.0

ADVANCE : 2/1 1/1 1/2 1/4

1/8

COLOR CURVE : LINEAR 1 2 3

DELETE COLOR : 0

DRAFT : 0.0(m)

PRESS [MENU] KEY TO EXIT

3. Use the GAIN control to choose [SOUNDER].

4. Use the RANGE control to choose [RANGE].

5. Use the GAIN control to choose range desired among [20], [40], [80], [120], [160],

[240] and [320] (meters).

6. To shift the display, use the RANGE control to choose [SHIFT].

7. Use the GAIN control to choose amount of shift desired (range 0-1000 (meters)).

8. Press the MENU key to close the menu.

4.2 Adjusting the Gain

You may adjust the display level of the echo sounder picture as below; the gain of the echo sounder itself cannot be adjusted from the sonar.

Note: Set the gain to the same setting as the echosounder connected. This setting does not affect the original echosounder setting.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SOUNDER].

4-2

4. Use the RANGE control to choose [GAIN].

5. Use the GAIN control to adjust gain (setting range: 0.0-10.0).

6. Press the MENU key to close the menu.

Page 51

4.3 Picture Advance Speed

Depth to cross-hair cursor intersection

Cross-hair Cursor

500

R 1000 T 15

(159 G 10.0

SHIP SPEED

12.4 kn

DEPTH

126m

SHIP COURSE

246°

LAT/LON

32°52.150N

132°12.150E

WATER TEMP

12.4°C

20min 10 0

Depth to cross-hair cursor intersection

839 810 217

B 60S

100 -

200 -

Cross hair-cursor

101

The picture advance speed determines how quickly the vertical scan lines run across the screen. When selecting a picture advance speed, keep in mind that a fast advance speed will expand a school of fish horizontally and a slow advance speed will contract it.

Note: Match the picture advance speed to that of the echo sounder. This setting does not affect original echosounder setting.

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SOUNDER].

4. Use the RANGE control to choose [ADVANCE].

5. Use the GAIN control to adjust advance speed desired. The fractions in the dialog box are one line produced per number of transmissions. For example, "1/2" displays one scan line per two transmissions.

6. Press the MENU key to close the menu.

4. ECHOSOUNDER MODE

4.4 Measuring Depth

You can measure depth to the cross-hair cursor as follows:

1. Use the trackball to place the trackball mark inside the echosounder display. The trackball mark changes to a cross-hair cursor.

2. Adjust the trackball to place the cross-hair cursor at the location desired.

3. Read the depth to the location at the cross-hair cursor.

Measuring depth

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4. ECHOSOUNDER MODE

Interference from other sounders

Inteference from electrical equipment

4.5 Suppressing Interference

Interference from other sounders or electrical interference shows itself on the screen as in the illustration below.

Interference

To remove interference, do the following:

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SOUNDER].

4. Use the RANGE control to choose [E/S INT REJECT].

5. Use the GAIN control to choose [ON]. (If no interference exists, choose [OFF].)

6. Press the MENU key to close the menu.

4.6 Suppressing Low Level Noise

Low level noise, often caused by sediments in water, is painted on the screen as a large number of light-blue dots. These echoes may be suppressed as below.

Clutter

4-4

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SOUNDER].

4. Use the RANGE control to choose [CLUTTER].

5. Use the GAIN control to choose setting. (The setting range is 0.0-10.0 and the higher the number the stronger the echo that will be erased.)

6. Press the MENU key to close the menu.

Page 53

4.7 Erasing Weak Echoes

Weak reflections

Sediments in the water or reflections from plankton may be painted on the screen in green or light-blue, as shown in the illustration below. These echoes may be erased in order of strength as below.

Weak echoes

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SOUNDER].

4. Use the RANGE control to choose [DELETE COLOR].

4. ECHOSOUNDER MODE

5. Use the GAIN control to choose setting desired. The setting range is 0-10, and the higher the setting the stronger the echo that will be erased.

6. Press the MENU key to close the menu.

4.8 Other Items on the Sounder Menu

The table below describes the SOUNDER menu items not described in the previous sections of this chapter.

Sounder menu description

Item Description Ref. page

COLOR Choose one of four display color patterns, according to your environ-

ment.

COLOR CURVE Adjusts echo presentation color curve against strong reflections. For

example, setting "1" averages weak to strong signals to obtain a balanced picture. The larger the setting the better the resolution on weak signals.

DRAFT Set ship's draft to get depth from the sea surface (rather than from the

transducer).

—

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4. ECHOSOUNDER MODE

This page is intentionally left blank.

4-6

Page 55

5. MARKS AND DATA

500

372 freeze 359 96

B 60S

450 15 ( 121) NW

R 1000

R 450 B 224°

TX OFF STAB

R 1000

T 15

(15)

G 10.0

SHIP SPEED

12.4 kn

SHIP COURSE

246°

LAT/LON

32°52.150N

132°12.150E

DEPTH

126m

WATER CURRENT TO

1.2kn 342°

C2 0.8kn 298°

C3 0.4kn 256°

WATER TEMP

12.0°C

20min 10 0

557 149

SW/W

238 493 132

(m) C ESE

S 10.5kn

20min 10 0

Trackball Mark Data Slant Range Horizontal Range Depth B Relative Bearing*

Freeze condition (for testing)

Range (Shown several seconds when range is changed.)

Heading*

TX Off

Stabilizer On*

Range Tilt Angle (Auto Tilt value) Gain Function Key Number

Speed*

Course*

Position*

Depth*

Current Data (current speed and direction for 3 layers)*

Temperature*, Temperature Graph*

Note: No or missing data in text window shown with asterisks.

Fish Mark Data*

Range between fish marks Range to fish mark Depth Speed Course

238

493

132

S 10.5kn

(m) C ESE

Target Lock Data*

Range Depth Bearing

557 149

B SW/W

Range and Bearing Data

Event Mark Data* Horizontal Range Depth ( ) Depth at time of entry B True Bearing*

* = Requires appropriate sensor.

Temperature Graph The temperature graph plots the latest 20 minutes of water temperature data, with a solid light blue line, scrolling from right to left. The range of the y-axis is 5° and that of the x-axis is 20 minutes. When temperature data is lost a horizontal dashed line starts extending from the point where the data was lost.

Temperature data regained

Temperature data lost

Fish Mark*

2nd Latest Fish Mark*

Stablilizer Mark*

Range Mark

Bearing Mark

Bearing Scale

Latest Event Mark*

Heading Mark

Trackball Mark

North Mark*

Own Ship Mark

Target Lock Mark*

Current Mark*

Event Mark*

Own Ship Position Mark*

Range Ring, Range Ring Data

Ship's Track*

Bearing Mark

5.1 Marks and Data on the Normal Display

Marks and data on the normal display

5-1

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5. MARKS AND DATA

P S

B B

Trackball Mark Data

()

Mark/Data Description

Own Ship Mark

Shows own ship's present position and points in bow direction.

North Mark*

North mark

When a heading sensor is connected, the north mark is displayed and points to north. If no heading sensor is connected, the north mark points to 0° on the sonar display.

Heading Mark

Heading mark

The heading mark is a dashed line extending from the screen center to the edge of the outermost range ring and it points in the direction of ship's heading.

Heading

With connection of a heading sensor, heading is shown 32 compass points (N, N/NE, etc.). The heading may also be displayed in true bearing in which case the indication is 360°.

Own Ship Position Mark

The own ship position mark is entered at own ship's position, with the EVENT key. 10 marks may be entered.

Trackball Mark

Sets own ship's mark location for off-center display; sets location for mark input; measures range and bearing. The trackball controls this mark.

→ ↓

Trackball mark data: , slant range; →, Horizontal range; ↓, Depth, B, Bearing. Appears at top left corner of the sonar display.

Relative bearing Bearing is shown in 360° or ±180° indication system, relative to ship's heading. In the latter case, "B" isindicated as follows:

.... on the port side

.... on the starboard side

Indication format may be selected with OTHER MARKS on the MARKS menu.

Range Data

Range setting, selected with the RANGE control, appears at top right corner of the sonar display.

Tilt Angle Data

The tilt angle appears below the range indication at the top right corner of the sonar display. The tilt angle can be changed in 1° steps within the range of 0° to 55°. In target lock* and automatic tilt control, the instantaneous tilt angle appears in parentheses. Accordingly, both are equal when target lock is on. In automatic tilt, the upper indication shows the tilt angle set by the TILT lever and the lower indication the instantaneous tilt angle at which the sonar actually works.

Gain

The gain chosen with the GAIN control appears on the top right corner of the sonar display.

Function Key Number

Function key number appears at the top right corner of the sonar display.

* = Requires appropriate sensor.

Description of marks and data on the normal display

5-2

Page 57

Description of marks and data on the normal display (con't from previous page)

° . N ° . E

500

Mark/Data Description

Range Rings

The range rings are dashed concentric circles inscribed at intervals of 1/4 or 1/2 of the range in use, depending on menu setting. Range ring data is also provided every two range rings.

Electronic Bearing Scale*

The electronic bearing scale is the outermost ring on the sonar display and is available with heading sensor connection. It rotates with own ship's movement. If no heading sensor is connected, the north mark points to 0° on the sonar display.

Ship's Track Mark*

With heading and speed data, own ship's track is plotted by a solid line. The track length can be selected among five or ten times the range. When the length exceeds the chosen length, the track is erased so that its length is equal to the chosen length.

Current Mark*

Current Data*

This mark can be displayed with current indicator input. The current marks show tidal current speed and direction in three layers (1-3), selected on the current indicator. The tidal current speed is shown by the length of the line extending from the center of the mark. Current direction can be shown as [to] or [from] with [CURRENT DIR] on the [MARKS] menu. Current speed range: 0.2 to 9.9 kn Direction range: ±180° or 0-359° Select the current layer marks to display for [C1], [C2] and [C3] in [MARKS] menu.

Own Ship Position Data*

With navigation input, position can be displayed in latitude and longitude (or Loran C TDs) in the text window. Latitude range: 90°00.000S to 90°00.000N Longitude range: 179°59.999S to 179°59.999E, 180°00.000

With appropriate sensors, speed, course, water depth and water temperature can be displayed in the text window. Speed range: 0.0-40 kn Course range: 0-359° Depth range: 0-9999 m (same range for any depth unit) Water temperature range: -10.0 to 40.0 °C

Nav Data*

SHIP SPEED: . kn SHIP COURSE: °

C1: . kn ° C2: . kn ° C3: . kn °

DEPTH: m

WATER TEMP: . °

Target Lock Mark*

Target Lock Mark Data*

→ ↓

B °

The target lock mark automatically tracks the school of fish selected by the operator. This function requires speed and heading data.

The slant range (→), depth (↓) and bearing (B) of the fish echo are shown at the bottom left corner on the sonar display.

5. MARKS AND DATA

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5. MARKS AND DATA

1 2

(

)

. . .

Mark/Data Description

Latest Event Mark

Event Mark

This mark depicts important locations. Use the trackball to place the trackball mark where desired and press the EVENT key to inscribe an event mark. Requires speed and heading data. Event marks follow own ship's movement. Ten marks may be entered and each press of the EVENT key enters an event mark and previously entered marks change as follows.

Latest Event Mark

Past Event Marks (Max. 9)

Latest Event Mark Data

The position data of the latest event mark, that is, horizontal range (→), depth (↓) and bearing. ( ) shows the latest event mark's original depth, and remains unchanged regardless of ship's movemovement or tilt angle. When the event mark is erased the above data disappears from the screen. To erase an event mark, place the trackball mark on it and then press the DELETE MARK key.

→ ↓

Latest Fish Mark

2nd Latest Mark

Fish Mark

These marks are inscribed on the screen by pressing the FISH key. Ten fish marks can be displayed. Each time the key is pressed the fish marks change on the screen as follows:

1st press of FISH key 2nd press of FISH key 3rd press of FISH key 4th press of FISH key

Fish Movement Data

→

↓ S C

Fish movement from the latest fish mark ( ) to the 2nd latest fish mark ( ) is shown by horizontal range (→), depth (↓), speed (S) and course (C), at the lower right corner of the screen.

Range and Bearing Marks

Bearing mark

Range mark

The range and bearing marks are used to choose the location to monitor aurally. Place the trackball mark on the location desired and press the R/B key. Own ship position and trackball mark are connected with a straight line, the bearing mark. The range mark is drawn with a concentric circle whose center is at own ship position and its radius touching the trackball mark's intersection.

Range and Bearing Marks Data R B °

Range (R) and bearing (B) marks data are shown at the bottom of the display when the range and bearing marks are displayed.

Stabilizer Mark*

Stabilizer

mark

With connection of Motion Sensor MS-100, the picture along the bearing chosen with the stabilizer mark is stabilized against ship's pitching and rolling. Choose the location with the trackball mark and press the STABILIZER key to stabilize the picture along the bearing selected.

Description of marks and data on the normal display (con't from previous page)

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Page 59

5. MARKS AND DATA

500

WATER TEMP

12.4°C

20min 10 0

205

R 552 B 60S

SHIP SPEED 12.4 kn DEPTH 126m SHIP COURSE 246°

LAT/LON 32°52.150N

132°12.150E

100 -

200 -

300-

SONAR MARKS AND INDICATIONS SAME AS ON NORMAL DISPLAY

Range and Bearing Marks

Net Sonde Mark (orange)*, *2

Cross-hair Cursor

Depth to cross-hair cursor intersection *3

Depth Scale *4

Speed*, Depth Course*

Position*

Temperature*, Temperature Graph*, *1

Color Bar

Range and Bearing Data

* = Requires appropriate sensor. *1 = Water current data may be displayed instead of temperature graph. See [DISP SELECT] on the [SYSTEM] menu.

*2 = Echosounder display only *3 = Depth on echosounder display; range on audio display. *4 = Depth scale on echosounder display; range scale on audio display.

Note: Range and bearing marks are used to choose the location to display in the audio display.

WATER TEMP

12.4°C

WATER CURRENT

C1 1.2kn 342°

C2 0.8kn 298° C3 0.4kn 256°

5.2 Marks and Data on the Echosounder and Audio Displays

Marks and data on the echosounder and audio displays

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5. MARKS AND DATA

200

0 -

100 -

200 -

300 -

Mark/Data Description

Color Bar

The color bar provides an estimate of echo strength in 16 colors. The red color is the strongest echo signal.

Depth Scale, Range Scale

The depth scale and range scale provide an estimate of depth and range in the echosounder and audio displays, respectively. It may be displayed at the right or left side of those displays. See [COMBISCALE] on the [SYSTEM] menu.

Cross-hair Cursor

Depth or Range

The cross-hair cursor measures the depth and range to the user-selected location in the echosounder and audio displays, respectively. Depth or range appears at the cross-hair cursor intersection.

Net Sonde Mark* (Echosounder display only)

The net sonde marks are orange horizontal lines (solid or dashed line) which mark the location of the net sonde fed from the echosounder.

Description of marks and data on the echosounder and audio displays

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Page 61

(A) Flat bottom

Tilt angle: 10° to 15°

(B) Flat bottom

Tilt angle: 20° or more

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

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.

6. INTERPRETING THE DISPLAY

6.1 Bottom Echo

When the tilt angle is changed, the bottom echo will appear on the screen. When the tilt angle is decreased, the bottom trace becomes wider and weaker. By observing the bottom condition on the screen, the skipper can prevent the net from being damaged by a reef or a shipwreck.

Bottom echoes

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6. INTERPRETING THE DISPLAY

(A) Sea surface fish

Tilt angle: 0° to 10°

(B) Midwater, bottom fish Tilt angle: 30° or more

Fish echo which appears before bottom can be detected.

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

School

of fish

Sea surface reflections

Bottom

School of fish

Bottom echo not displayed

because of decreased tilt angle. Sea surface reflections are present.

School of fish

Large midwater school of fish is present.

Bottom

To search bottom fish, use a narrow tillt angle so the bottom echo will be weak, enabling you to see bottom fish echoes.

6.2 School of Fish

A school of fish appears as a mass of echoes. The color of the mass shows the density. To know the distribution and center point of a school of fish, choose several different tilt angles.

6-2

Fish echoes

Page 63

6.3 Sea Surface Reflections

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 turns)

To reduce sea surface reflections, set the tilt angle to 5° or more so that the upper edge of the sonar beam does not hit sea surface, or adjust the TVG functions. When the sonar is used with a narrow tilt angle, the sea surface reflections cover a large area (up to 300 m to 400 m) as illustrated below.

6. INTERPRETING THE DISPLAY

Tilt: 0°

Tilt: 5-6°

6.4 Wake

A wake produced by own ship or another ship can be a strong reflecting object when the sonar is used with a narrow tilt angle. As the wake appears on the screen as a thick continuous line, it can be easily distinguished from a school of fish. On the other hand, the wake contains a lot of air bubbles which attenuate ultrasonic energy, making it often difficult to sound beyond the wake.

Sea surface

Sea surface reflections

Tilt angle indication

Sea surface reflections

Wake

6-3

Page 64

6. INTERPRETING THE DISPLAY

Sidelobe

Mainlobe

Mainlobe echo

Sidelobe echo

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.

(A) Interference from other sonar

(B) Electrical Interference

6.5 False Echo by Sidelobe

An ultrasonic wave is emitted only in the direction set by the TILT lever but, in practice, there are some emissions outside the main beam that are called "sidelobes." Energy of the sidelobe is fairly weak but when the sonar is used in comparatively shallow water with a hard and rocky bottom, strong target signals are detected by the sidelobe. These are represented on the screen as a false echo as shown below. To weaken the sidelobe echoes, set [VER BEAMWIDTH] to [WIDE], on the [SONAR] menu.

Sidelobe echo

6.6 Noise and Interference

If the fishing ground is crowded with many fishing boats, the sonar is subject to interference from ultrasonic equipment such as an echo sounder, sonar, etc. on board other boats as well as those on board own ship. For instance, interference from the sonar operated on board other boats will appear as a ring as shown in (A). This interference can be suppressed by properly changing the TX cycle. Electrical equipment on own ship can also cause interference to the sonar as shown in (B). The noise from some marine life appears on the screen as in (C). Those types of noise can be suppressed with the interference rejector.

6-4

Noise and interference

Page 65

7. MARKS AND SYSTEM MENUS

MARKS MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

RANGE RINGS : 1/4R 1/2R OFF

BEARING SCALE : ON OFF

CURRENT VECTOR

: ON OFF

CURRENT DIR : TO FROM

SHIP'S TRACK : 10R 5R OFF

COURSE : 32CMPS 360TRUE

HEADING : 32CMPS 360TRUE OFF

CURRENT DATA : 32CMPS 360TRUE ±180° 360°

EVENT/FISH : 32CMPS 360TRUE ±180° 360°

OTHER MARKS : ±180° 360°

POSITION DATA : L/L TD

WATER CURRENT : C1

WATER CURRENT : C2

WATER CURRENT : C3

PRESS [MENU] KEY TO EXIT

This chapter describes the [MARKS] and [SYSTEM] menus. To display the [SYSTEM] or [MARKS] menu, do the following:

1. Press the MENU key to open the menu.

2. Use the RANGE control to [MENU MODE] at the top of the screen.

3. Use the GAIN control to choose [SYSTEM] or [MARKS] as appropriate.

7.1 MARKS Menu

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7. MARKS AND SYSTEM MENUS

Current Mark

FROM

Item Description Ref. Page

MARKS menu description

RANGE RINGS Turns the range rings on/off and chooses range ring inter-

5-3 val, 1/4 or 1/2 the range. When turned off, the north mark and heading mark are also turned off.

BEARING SCALE Turns the electronic bearing scale on/off. 5-3

CURRENT VEC-

Turns the current (tide) mark on/off. 5-3

TOR

CURRENT DIR Turns current (tide) data on or off. "FROM" shows what di-

5-3 rection the current is flowing; "TO" shows the direction the current is heading. Requires a current indicator.

SHIP'S TRACK Turns ship's track display on/off. 5R and 10R are the

5-3 amount of track to display; that is, the length of the track shown on the display is five and ten times the range, respectively.

COURSE Chooses how to display course, in 32 compass points or

5-3 360° true.

HEADING Chooses how to display heading, in 32 compass points or

5-2 360° true.

CURRENT DATA Choose how to display current (tide) data, 32 compass

5-3 points, 360° true, ±180° or 360° relative.

EVENT/FISH Choose how to display event and fish marks, 32 CMPS,

360° TRUE, ±180° or 360°. For ±180°," starboard direction is shown as "xxxS" and port direction as "xxxP." True

Event MK: 5-5 Fish MK: 5-4

Tgt Lock MK: 5-3 requires a heading sensor. 32 CMPS shows direction in compass points such as N, N/E, NNE, NE/N, etc.

OTHER MARKS Chooses how to display other marks, ±180° or 360°. R/B MK: 5-4

Trackball MK: 5-2

POSITION DATA Chooses how to display position, in latitude and longitude

5-3-

or Loran TDs.

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7.2 SYSTEM Menu

SYSTEM MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

DIMMER : 10

DISP SELECT : TEMP CURRENT

HEADING ADJ : 0°

AUTO RETRACT : OFF (OFF, 5-16kn)OFF

SPEED MESSAGE : ON OFF

EXT KP SYNC : OFF ON

AUTO TRAIN SPD : LOW HIGH

AUTO TILT SPD : LOW HIGH

UNIT : METERS FEET FATHOMS PA/BRA

SHIP'S SPD/BR :

LOG/GYRO

CURRENT NAV DATA

GYRO+NAV

LOG PULSE : 200 400

PORT1 BAUDRATE : 19200 9600 4800 2400

PORT1 FORMAT : NMEA CIF

PORT2 BAUDRATE : 19200 9600 4800 2400

PORT2 FORMAT : NMEA CIF

NAV DATA : GPS LC DR ALL

COMBI SCALE : RIGHT LEFT

SUB TEXT INDI : OFF ON

LANGUAGE : ENGLISH ESPANOL DANSK

NEDERLND ITALIANO

NORSK VIET

INDONESIA

ACTIVATIONCODE : EXECUTE

TEST : SINGLE CONTI PANEL COLOR

: PATTERN SIO ECHO-1 ECHO-2

ECHO-3 ECHO-4

SET TO DEFAULT : EXECUTE

PRESS [MENU] KEY TO EXIT

7. MARKS AND SYSTEM MENUS

DIMMER Adjust control panel backlighting. 1-5

DISP SELECT Chooses whether to display current (tide) data or temperature data

HEADING ADJ Compensates for error (compensation range: 0-359°) in heading

Description of [SYSTEM] menu

Item Description Ref. Page.

in the combination displays.

alignment of hull unit. If you want to turn the displayed echo 30° leftward, for example, enter 30 and to turn it rightward 30° enter 330.

5-5

—

7-3

Page 68

7. MARKS AND SYSTEM MENUS

Description of [SYSTEM] menu (con't from previous page)

Item Description Ref. Page.

AUTO RETRACT Turns automatic transducer retraction on/off and sets speed (5-

16) at which retraction occurs. This function requires speed data. The transducer may be retracted at a speed different from set here if the speed data is wrong. Reduce the ship's speed below 16 knots and then retract the transducer.

SPEED MESSAGE Turns on/off ship's speed warning message. 8-6

EXT KP SYNC Turn on when using external keying pulse. —

AUTO TRAIN SPD Chooses scanning speed of bearing mark; high or low. High

speed is useful for general searching and tracking fast moving schools of fish.

AUTO TILT SPD Chooses the speed of tilt change in automatic tilting from high

or low.

UNIT Chooses unit of depth and distance measurement among me-

ters, feet, fathoms, passi/braza. Note: The unit of measurement is fixed for some menu items (for example, draft). When the unit is changed, echosounder range and shift are reset to 0 (zero).

SHIP'S SPD/BR Chooses source of speed and course data with which to draw

ship's track. The choices are log/gyrocompass, current indicator, nav data and gyro+nav data.

—

LOG PULSE Chooses log pulse/NM specification of speed log; 200 or 400

pulses/NM.

PORT1 BAUD RATE

PORT1 FORMAT Sets format of equipment connected to port 1; NMEA or CIF

PORT2 BAUD RATE

PORT2 FORMAT Sets format of equipment connected to port 2; NMEA or CIF

NAV DATA Chooses source of nav data among GPS, LC (Loran C), DR

COMBI SCALE Chooses the location of the depth scale and distance scale in

SUB TEXT INDI For use by service technicians. Normally turn this indication off. —

LANGUAGE Choose the language to display among English, Japanese, Ko-

Sets baud rate of equipment connected to port 1, among 2400, 4800, 9600 and 19200 (bps).

(Furuno).

Sets baud rate of equipment connected to port 2, among 2400, 4800, 9600 and 19200 (bps).

(Furuno).

(Dead Reckoning) or ALL. "ALL" automatically chooses source in the order of GPS, Loran C and dead reckoning.

the combination displays, right or left side.

rean and several European languages.

—

5-6

—

ACTIVATIONCODE

TEST Chooses the test to execute. 8-7

Enables the language setting by input the correct password. Enter the password to enable change to certain languages.

7-4

7-5

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7. MARKS AND SYSTEM MENUS

Item Description Ref. Page.

SET TO DEFAULT Restores all default settings, including controls. Choose this

item and then press the EVENT key to restore all default settings.

7.3 Activation Code

An activation code is required to set the language to Spanish, Thai, Vietnamese, Burmese, or Indonesian.

Note: Contact a FURUNO agent or dealer for the password.

1. Select [ACTIVATIONCODE].

2. Press the EVENT MARK key and below message appears. SELECTED MENU IS LOCKED ARE YOU SURE TO CHANGE? NO YES PRESS [EVENT] KEY TO EXECUTE

3. Select [YES] and above message disappears.

4. Select [ACTIVATIONCODE] again and press EVENT MARK key.

5. Turn GAIN knob to select the place to input the password and turn RANGE knob to select the password characters.

—

6. Press the EVENT MARK key to enter the password.

7. Language selection changes.

8. Select the required language.

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7. MARKS AND SYSTEM MENUS

This page is intentionally left blank.

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8. MAINTENANCE, TROUBLE-

WARNING

NOTICE

o not apply paint, anti-corrosive sealant or contact spray to plastic parts or equipment coating.

Those items contain products that can damage plastic parts and equipment coating.

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

This equipment uses high voltage that can cause electrical shock. 0nly qualified persons can work inside the equipment.

SHOOTING

8.1 General Maintenance

This equipment is designed and constructed to provide many years of trouble-free performance when properly maintained. However, no machine can perform to the utmost of its ability without proper maintenance. Check the following points monthly.

• Check all cables. If damaged, replace.

• Check connectors at rear of each unit. Tighten or clean as necessary.

• Check earth of each unit. Tighten or clean as necessary.

• Check voltage of ship's mains to be sure it is within the equipment's power rating.

8.2 Cleaning the Equipment

Dust or dirt can be removed from the equipment with a soft, dry cloth. Do not use chemical cleaners to clean the equipment - they can remove paint and markings or deform the equipment.

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8. MAINTENANCE, TROUBLESHOOTING

The zinc plate attached near the transducer must be replaced every year.

The junction between the main shaft and transducer may corrode, which may result in the loss of the transducer or water leakage in the vessel.

Apply MOLYTONE grease #2 (or equivalent) every six months.

Dry dock ship and clean transducer face yearly. Apply single coat of "SEATENDER 20" (or equivalent) anti-foulant to transducer face to keep marine life off the transducer. Do not use solvents to clean the transducer and do not paint the transducer face.

HULL UNIT

Equivalent greases: SHOWA SHELL OIL: Shell Albania Grease S No.2 EXXON MOBIL: Mobilux EP No.2 NIPPON OIL CORPORATION: Multinox Grease No. 2

Raise transducer and coat main shaft with Daphne Eponex Grease No.2 (IDEMITSU KOSAN CO.,LTD.*

)

(or equivalent) every six months.

Replacement of grease cotton

Check the grease cotton monthly for water leakage. If leakage is found, tighten the grease cotton retainer. If water continues to leak, replace the grease cotton.

For how to replace the grease cotton, see page 1-7 in the installation manual.

Parts code for grease cotton is 000-801-891.

8.3 Hull Unit Maintenance

8.3.1 Lubrication points, zinc plate

8-2

Hull unit maintenance points

Page 73

8.3.2 Manually raising the transducer

Turn off the POWER switch on the hull unit before manually raising or lowering the transducer (with the ratchet wrench).

Bodily injury may result if the ratchet wrench rotates unexpectedly, because the raise/lower motor may start up.

CAUTIONCAUTION

Screw (M4x12, 2 pcs.)

Fasten the attachment onto the motor gear.

Turn the attachment clockwise with the ratchet wrench.

If the transducer can not be raised automatically, manually raise it as follows:

1. Turn off the POWER switch on the hull unit.

2. Remove four screws (M4x8) to remove the gear cover.

8. MAINTENANCE, TROUBLESHOOTING

Gear cover

Raise/lower drive assembly

POWER switch

Screw (M4x8, 4 pcs.)

Screw (M4x12, 2 pcs.)

Gear cover

Motor gear

Attachment

3. Remove two screws (M4x12) to unfasten the attachment.

4. Fasten the attachment onto the motor gear with the screws removed at step 3.

5. Turn the attachment clockwise with the ratchet wrench to raise the transducer.

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8. MAINTENANCE, TROUBLESHOOTING

WARNINGWARNING

Use the proper fuse.

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

8.4 Fuse Replacement

The fuses in the processor and transceiver units protect them from overvoltage, equipment fault and reverse polarity of the ship's mains. If the power cannot be applied, first check the fuse for the processor unit. The fuse for the transceiver unit is inside the unit; have a qualified technician check the fuse. If a fuse blows after replacement, or the power cannot be turned in spite of normal fuse, contact your dealer for advice.

Unit Fuse Type Code No.

Processor Unit FGBO-A 2A AC125V 000-549-062

Transceiver Unit (100 VAC spec.)

Transceiver Unit (220 VAC spec.)

FGMB 2A 250V 000-122-000

FGBO 7A AC125V 000-549-013

FGMB 2A 250V 000-122-000

FGBO 4A AC250V 000-546-707

8.5 Fan Replacement

The processor unit has a fan, and its life is about 25,000 hours, in ambient temperature of 50°C.

If the fan stops, because the area around the power supply is too hot, the power voltage may fluctuate. Contact a FURUNO agent or dealer to request replacement of the fan.

Type Code No.

Fan 109-180 000-105-416

8-4

Page 75

8.6 Troubleshooting

The table below provides common symptoms of equipment troubles and the means to rectify them.

Symptom Check, Remedy

8. MAINTENANCE, TROUBLESHOOTING

Cannot turn on the power

Bottom echo becomes irregular

Weak echo • Output power set to minimum. Set [TX OUTPUT] ([SONAR]

Somewhat strange color

Picture contains noise

Picture does not change when tilt angle is changed

• Check power cable.

• Check ship's mains.

• First check the fuse in the processor unit. If it is OK, have a qualified technician check the fuse in the transceiver unit.

• Rough seas. Distance to the bottom changes due to rolling and pitching.

• Long range selected. Transmission period is longer so ship's pitching and rolling are apt to affect detection of echo.

menu) to maximum.

• Excessive TVG. Readjust TVG NEAR and FAR on the [SONAR] menu.

• Brilliance too low. Adjust display brilliance.

• Equipment not grounded properly. Check equipment ground.

• Power cable is too close to the signal cable. Relocate power cable or signal cable.

• Debris may be on sea surface. Reject unwanted noise with the interference rejector on the [SONAR] menu.

• Problem in tilt mechanism or control line. Contact a FURUNO agent or dealer for advice.

8-5

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8. MAINTENANCE, TROUBLESHOOTING

8.7 Error Messages

The table below shows the error messages which may appear on the display. All error messages are accompanied by the audio alarm, which you may silence with the R/B key.

Message Meaning, Remedy

Overvoltage

Error messages

OVERVOLTAGE RETRACT TRANSDUCER AND TURN OFF POWER. PRESS R/B KEY TO CLEAR ALARM.

Transducer not retracted

TRANSDUCER NOT RETRACTED CUT OFF POWER LINE TO PROCESSOR AND POWER SUPPLY. PRESS R/B KEY TO CLEAR ALARM.

High speed

WARNING MAX ALLOWABLE SPEED FOR EXTENDED TRANSDUCER IS 16 KN. MAX ALLOWABLE SPEED DURING RAISING/LOWERING TRANSDUCER IS 16 KN. PRESS R/B KEY TO CLEAR ALARM.

Excessive voltage detected. The message flashes and the audio alarm sounds. Retract the transducer and then turn off the power. Press the R/B key to silence the audio alarm. Have a technician check the set.

If the transducer is not retracted into the tank in approx. 30 seconds after the  key is pressed, the message flashes and the audio alarm sounds. Press the R/B key to silence the audio alarm. Raise the transducer manually, following paragraph 8.3.2.

Ship's speed is higher than 16 knots when you attempted to lower or retract the transducer. The message flashes and the audio alarm sounds. Press the R/B key to silence the audio alarm. Reduced speed to less than 16 knots, and the previously used display appears.If you attempt to lower the transducer when the speed is higher than 16 knots the message flashes and the audio alarm sounds. (The transducer is neither raised nor lowered.)

WARNING TRANSDUCER IS KEPT EXTENDED REDUCE SHIP'S SPEED AND PRESS  TO RETRACT TRANSDUCER. ACTIVATING AUTOMATIC RETRACTION. PRESS R/B KEY TO CLEAR MESSAGE.

Automatic retraction

ACTIVATING AUTOMATIC RETRACTION PRESS R/B KEY TO CLEAR MESSAGE.

8-6

Ship's speed is higher than 18 knots with the transducer extended. The message flashes and the audio alarm sounds. Press the R/B key to silence the audio alarm. Lower speed below 18 knots, and the previously used display appears.

Transducer is being retracted because ship speed set for automatic retraction has been reached. (The message appears if [AUTO RETRACT] in the [SYSTEM] menu is turned on.) Press the R/B key to clear the message.

Page 77

8.8 Diagnostic Tests

This unit has 10 diagnostic tests (eight with the CSH-8LMARK-2) which check it for proper performance. Although the tests are designed primarily for use by the service technician, they can also be executed by the user to identify defective components. However, never attempt to check inside the unit; there are no user-serviceable parts inside. Any repair work is best left to a qualified technician.

8.8.1 Choosing a diagnostic test

1. Press the MENU key to open the menu.

2. Use the RANGE control to choose [MENU MODE].

3. Use the GAIN control to choose [SYSTEM].

SYSTEM MENU ** (RANGE CTRL: U/D, GAIN CTRL: L/R)

[MENU MODE] : SONAR SOUNDER MARKS SYSTEM

DIMMER : 10

DISP SELECT : TEMP CURRENT

HEADING ADJ : 0°

AUTO RETRACT : OFF (OFF, 5-16kn)OFF

SPEED MESSAGE : ON OFF

EXT KP SYNC : OFF ON

AUTO TRAIN SPD : LOW HIGH

AUTO TILT SPD : LOW HIGH

UNIT : METERS FEET FATHOMS PA/BRA

SHIP'S SPD/BR :

LOG PULSE : 200 400

PORT1 BAUDRATE : 19200 9600 4800 2400

PORT1 FORMAT : NMEA CIF

PORT2 BAUDRATE : 19200 9600 4800 2400

PORT2 FORMAT : NMEA CIF

NAV DATA : GPS LC DR ALL

COMBI SCALE : RIGHT LEFT

SUB TEXT INDI : OFF ON

LANGUAGE : ENGLISH ESPANOL DANSK

NEDERLND ITALIANO

NORSK VIET

INDONESIA

ACTIVATIONCODE : EXECUTE

TEST : SINGLE CONTI PANEL COLOR

: PATTERN SIO ECHO-1 ECHO-2

ECHO-3 ECHO-4

SET TO DEFAULT : EXECUTE

LOG/GYRO

8. MAINTENANCE, TROUBLESHOOTING

CURRENT NAV DATA

GYRO+NAV

PRESS [MENU] KEY TO EXIT

4. Use the RANGE control to choose [TEST].

5. Use the GAIN control to choose a test.

6. Press the EVENT key to execute the test.

7. To quit a test, press the MENU key.

8-7

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8. MAINTENANCE, TROUBLESHOOTING

PRESS [MENU] KEY TO EXIT

Processor unit's program version no.

and results of ROM, RAM, VRAM

and EEPROM tests.

0 = Version No. of Board

Transceiver unit's program version no. (CSH-5LMARK-2 only) and results of ROM, RAM and DROM* tests.

* = Continuous test only

Control unit's program version no. and results of ROM and RAM tests. 0 = Version No. of Board

xx.xx : Program Version No. ### : 854 (CSH-8LMARK-2 85 kHz) 855 (CSH-8LMARK-2 107 kHz)

861 (CSH-5LMARK-2 55 kHz)

862 (CSH-5LMARK-2 68 kHz)

F : DIP SW setting

CONTI TEST

MAIN-0

1050951-xx.xx F FF 1050842-xx.xx 1050843-xx.xx ROM = OK RAM

= OK

VRAM = OK

FPGA1 1050846-xx.xx FPGA2 1050847-xx.xx

TRX 1050850-xx.xx 1050###-xx.xx FF FF ROM = OK RAM = OK DROM = OK

KEY-0 1050730-xx.xx F ROM = OK RAM = OK

FPGA’s program version no.

8.8.2 Description of diagnostic tests

Single test, Conti(nuous) test

The single and conti(nuous) tests check the ROMs and RAMs for proper operation, one time or continuous, respectively. After the test is completed, the results are indicated as OK (normal operation) or NG (malfunction), to the right of the device checked. For the single test, normal operation is restored after completion of the test. When the MENU key is pressed in the continuous test, the equipment goes into start up condition.

8-8

Continuous test

Page 79

8. MAINTENANCE, TROUBLESHOOTING

X=0

Y=00

PANEL TEST

PRESS [MENU] KEY TO EXIT

Trackball position in X-Y coordinate

Panel test

The panel test checks the controls on the control unit for proper operation.

1. Press a key. If the key is normal, "1" is shown at the key's on-screen location when the key is pressed; "0" when it is released. (The POWER switch cannot be checked.)

2. Operate the TILT lever. If the lever is normal, "1" appears when increasing the tilt angle, "2" when decreasing the tilt angle and "0" when the lever is released.

3. Operate the trackball. Its X-Y coordinate changes with trackball rotation. The coordinates are "0" until the trackball is operated.

4. Operate the GAIN and RANGE controls. The on-screen indication is "-1" with counterclockwise rotation and "1" with clockwise rotation.

Panel test

8-9

Page 80

8. MAINTENANCE, TROUBLESHOOTING

WHITE BLUE GREEN RED

Color test

The color test checks for proper display of colors. Press the EVENT key to change the screen color, in the order of white, blue, green and red.

Pattern test

The pattern test displays concentric rings overlaid on a grid to test for proper display of rings and horizontal and vertical lines.

If the test shows error (for example, no horizontal or vertical lines shown), see the monitor's operator's manual for how to adjust the monitor.

Color test

PATTERN TEST

PRESS [MENU] KEY TO EXIT

Pattern test

SIO test

This test checks the input/output ports (CN-A1, NMEA1/CIF1, NMEA2/CIF2) of the processor unit. The result for the CN-A1 port is shown as OK or NG (No Good).

The test for the NMEA1/CIF1 and NMEA2/CIF2 ports is for factory use. The result is always NG.

NMEA2/CIF2 port check NMEA1/CIF1 port check CN-A1 port check

SIO TEST

TRX = OK PORT1 = NG PORT2 = NG

PORT 1/2: FACTORY USE ONLY

PRESS [MENU] KEY TO EXIT

8-10

SIO test

Page 81

Echo tests

TRX ECHO TEST

PRESS [MENU] KEY TO EXIT

Test Description Display

Echo-1

The echo-1 test checks the echo display function of the monitor for proper operation, emitting artificial scan signals in 16 colors. If conducted with the COMBI-2 mode active, artificial echoes are shown in the echosounder display to test the ES interface.

The result of echo test is OK if the echo sensitivity increases every 90°.

Echo-2

Echo-3

Echo-4

The echo-2 test checks the TVG function on the PSW Board in the transceiver unit for proper operation. When the MENU key is pressed, the equipment goes into start up condition.

The result of echo test is OK if the four echo signals appear in a cross shape.

Note: For the CSH-8LMARK-2, on the [SONAR] menu, set [NOISE LIMITER] to [0] and [HOR BEAMWIDTH] to [WIDE] before conducting this test.

The echo-3 test checks the analog multiplexer on the PSW Board in the transceiver unit for proper operation. This test is not available with the CSH-8LMARK-2. When the MENU key is pressed, the equipment goes into start up condition.

Adjust the sensitivity of image with the Range and Gain controls to display the picture shown right. The result of echo test is OK if echo is shown in all directions.

The echo-4 test checks the BMF Board in the transceiver unit for proper operation. This test is not available with the CSH-8LMARK-2. When the MENU key is pressed, the equipment goes into start up condition.

The result of echo test is OK if the four echo signals appears as shown right.

DISPLAY ECHO TEST

PRESS [MENU] KEY TO EXIT

TRX ECHO TEST

PRESS [MENU] KEY TO EXIT

TRX ECHO TEST

PRESS [MENU] KEY TO EXIT

8. MAINTENANCE, TROUBLESHOOTING

Echo tests

8-11

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8. MAINTENANCE, TROUBLESHOOTING

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8-12

Page 83

APPENDIX 1 MENU TREE

MENU key (SONAR selected from MENU MODE)

DISPLAY MODE (COMBI-1, NORM, COMBI-2) TX OUTPUT (0-10, 8) PULSE LENGTH (0-10, 8) TX CYCLE (0-10, 10) TVG NEAR (0-10, 6) TVG FAR ( (0-10, 7) AGC (0-10, 2) 2ND AGC (0-10, 1) NOISE LIMITER (0-10, 3) COLOR CURVE (1, 2, 3, 4) COLOR RESPONSE (1, 2, 3, 4) DELETE COLOR (0-10, 0) ECHO AVERAGE (0-3, 1) INT REJECT (0-3, 1) HOR BEAMWIDTH (WIDE, NARROW) VER BEAMWIDTH (WIDE, NARROW) COLOR (1, 2, 3, 4) ERASE MARKS (TRACK, SHIP, EVENT, FISH) ALARM LEVEL (0-14, 9) AUTO TRAIN (ON, OFF) TRAIN SECTOR (±10°, ±20°, ±40°, ±60°) AUTO TILT (ON, OFF) TILT ANGLE (±2-10°, ±4-14°, ±6-20°, ±10-26°) TRANSMISSION (ON, OFF) AUDIO VOLUME (0-10, 10) ASSIGN SETTING (F1 KEY, F2 KEY, F3 KEY, F4 KEY) ASSIGN MENU (EXECUTE)

MENU key (SOUNDER

selected from

MENU MODE)

COLOR (1, 2 ,3 4) RANGE (20-320, 160 (m)) SHIFT (0-1000, 0 (m)) E/S INT REJECT (ON, OFF) GAIN (0.0-10.0, 3.0) CLUTTER (0.0-10.0, 2.0) ADVANCE (2/1, 1/1, 1/2, 1/4, 1/8) COLOR CURVE (LINEAR, 1, 2 , 3) DELETE COLOR (0-19, 0) DRAFT (0.0-10.0, 0 (m))

Default settings shown in bold italics. The menu item [MENU MODE], which chooses a menu, is shown at the top of each menu.

Sonar menu

Sounder menu

AP-1

Page 84

APPENDIX 1 MENU TREE

MENU key (SYSTEM selected from MENU MODE)

DIMMER (0-10, 10) DISP SELECT (TEMP, CURRENT) HEADING ADJ (0-359°, 0°) AUTO RETRACT (OFF, 5-16 kn) SPEED MESSAGE (ON, OFF) EXT KP SYNC (OFF, ON) AUTO TRAIN SPD (LOW, HIGH) AUTO TILT SPD (LOW, HIGH) UNIT (METERS, FEET, FATHOMS, PA/BRA) SHIP'S SPD/BR (LOG/GYRO, CURRENT, NAV DATA, GYRO+NAV) LOG PULSE (200, 400) PORT1 BAUDRATE (19200, 9600, 4800, 2400) PORT1 FORMAT (NMEA, CIF) PORT2 BAUDRATE (19200, 9600, 4800, 2400) PORT2 FORMAT (NMEA, CIF) NAV DATA (GPS, LC, DR, ALL) COMBI SCALE (RIGHT, LEFT) SUB TEXT INDI (OFF, ON) LANGUAGE (ENGLISH, Others) ACTIVATIONCODE TEST (SINGLE, CONTI, PANEL, COLOR, PATTERN, SIO, ECHO-1, ECHO-2, ECHO-3*, ECHO-4*) SET TO DEFAULT :EXECUTE * = CSH-5LMARK-2 only

Marks menu

MENU key (MARKS selected from MENU MODE)

System menu

RANGE RINGS (1/4R , 1/2R, OFF) BEARING SCALE (ON, OFF) CURRENT VECTOR (ON, OFF) CURRENT DIR (TO, FROM) SHIP'S TRACK (10R, 5R, OFF) COURSE (32CMPS, 360TRUE) HEADING (32CMPS, 360TRUE, OFF) CURRENT DATA (32CMPS, 360TRUE, ±180°, 360°) EVENT/FISH (32CMPS, 360TRUE, ±180°, 360°) OTHER MARKS (±180°, 360°) POSITION DATA (L/L, TD) WATER CURRENT (C1 to C5; C1) WATER CURRENT (C1 to C5; C2) WATER CURRENT (C1 to C5; C3)

AP-2

Page 85

FURUNO

CSH-5L/8L MARK-2

SPECIFICATIONS OF COLOR SCANNING SONAR

CSH-5L/8L MARK-2

1 TRANSCEIVER UNIT

1.1 Transmitter High power MOS FET amplifier with 11-step power reduction switch

1.2 Receiver Low noise superheterodyne, Continuously scanning beam forming

1.3 TX frequency CSH-5L MARK-2 55 kHz or 68 kHz CSH-8L MARK-2 85 kHz or 107 kHz

1.4 Range

Range (m)

Basic Range (m)

50 65 80 50 65

85 110 135 85 110 100 130 160 100 130 150 195 240 150 195 200 260 320 200 260 250 325 400 250 325 300 390 480 300 390 350 455 560 350 455 400 520 640 400 520 450 585 720 450 585 500 650 800 500 650 600 780 960 600 780 800 1040 1280 800 1040

1000 1300 1600 1000 1300 1200 1560 1920 1200 1560 1600 2080 2560 1600 2080

Note

1) Ranges shown for off-center “on” are maximum value.

2) Under certain circumstances, a target (fish school) may not be detected due to its nature or because of sea conditions, ever if it is located within the display range.

1.5 Pulse-length 0.5 to 20 ms, interlocked with range (can be changed in 11 steps)

1.6 Pulse repetition rate 0.25 to 4.4 s, interlocked with range (can be changed in 11 steps) External synchronized transmission keying

1.7 Audio search By external loudspeaker Frequency 800 Hz (CSH-5L MARK-2), 1 kHz (CSH-8L MARK-2) Sector 20°, 40°, 80° and 120° selectable

1.8 Gain control TVG, AGC

Offcenter

“OFF”

2 PROCESSOR UNIT

2.1 Display mode Single scan, Echo sounder combination, Audio combination

2.2 Colors Scan/echo: 16 colors, mark: 1 color

2.3 Mark Own ship’s track, Heading line, Direction/distance, Fish school, Event, Target lock

2.4 Alphanumeric data Range, Tilt, Gain, Trackball mark, Event mark, Bearing/range mark Own ship’s position, Ship’s speed, Depth, Water temperature,

Single Echo Sounder Combination

Offcenter

“ON”

Offcenter

“OFF”

Offcenter

“ON”

SP - 1 E1350S01B-M

Page 86

FURUNO

Current speed and direction (5 layer)

2.5 Unit Meter, feet, fathom, P/B

2.6 Audio search ±10°, ±20°, ±40° and ±60°

2.7 Features Interference rejecter, Afterglow, Noise limiter, Numeric indication Automatic tilt scanning, over-voltage warning, Unretracted transducer warning

CSH-5L/8L MARK-2

3 HULL UNIT

3.1 XDCR travel 400 mm or 600 mm, selectable

3.2 Raising/lowering time 400 mm: 14 s, 600 mm: 20 s

3.3 Driving system Remote electric control

3.4 Allowable ship’s speed 18 kn max. (16 kn during raise/lower operation)

4 INTERFACE

4.1 Port number Serial 2 ports, NMEA 0183 Ver1.5/2.0/2.2 E/S 1 port, Sonde/ sounder, VI-1100A applicable Speed log 1 port, contact closure, 200/400 pulse/NM Gyrocompass 1 port, AD converter AD-100 External KP 1 port, Current loop, 0 to 12V External audio 1 port, 2 W, 50 ohm, 3.5 mm pin-plug Video signal 2 ports, RGB analog, separated synchronization, XGA (VESA) 1024 x 768, 65.0 MHz, Dsub-15P-female

4.2 I/O sentences Input CUR, DBS, DBT, DPT, GGA*, GLC, GLL*, GTD, HDG, HDM, HDT, MTW, RMA, RMC, VDR, VHW, VTG (*: disabled for NMEA0183 V1.5) Output TLL

4.3 CIF data input Location, Ship’s speed, Bearing, Current data (1 layer), Water depth, Water temperature, Multiple layer current data

5 POWER SUPPLY

5.1 Processor unit CSH-5L MARK-2 100/115/200/220/240 VAC: 4.0-2.0 A, 1 phase, 50-60 Hz CSH-8L MARK-2 100/115/200/220/240 VAC: 4.5-2.2 A, 1 phase, 50-60 Hz

5.2 DC/AC Inverter (TR-2451, option) 24 VDC

6 ENVIRONMENTAL CONDITION

6.1 Ambient temperature 0°C to +50°C

6.2 Relative humidity 95% or less at 40°C

6.3 Degree of protection Processor/ control unit IPX2 (w/o connector panel of processor unit) Others IPX0

6.4 Vibration IEC 60945 Ed.4

7 UNIT COLOR

7.1 Processor unit 2.5GY5/1.5

7.2 Transceiver/hull unit 2.5G7/2

7.3 Control unit N3.0

SP - 2 E1350S01B-M

Page 87

INDEX

Numerics

2ND AGC .................................................. 2-3

Activation code.......................................... 7-5

AGC .......................................................... 2-2

ALARM ZONE key .................................... 3-3

Audio volume .......................................... 1-17

Auto retraction........................................... 7-4

Auto tilt .................................................... 1-10

Auto train................................................... 3-2

Beamwidth ................................................ 2-7

Bearing scale ............................................ 7-2

Clutter........................................................ 4-4

Color (sonar) ........................................... 1-16

Color curve

echosounder ........................................... 4-5

sonar ..................................................... 1-16

Color response (sonar) ........................... 1-16

Color test................................................. 8-10

Continuous test ......................................... 8-8

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

Current vector, direction............................ 7-2

Default settings ......................................... 7-5

DELETE MARK key ...........................3-5

Deleting marks .......................................... 3-7

Depth measurement

(echosounder mode) ................................. 4-3

Diagnostics

choosing.................................................. 8-7

color test................................................ 8-10

continous test .......................................... 8-8

echo tests.............................................. 8-11

panel test................................................. 8-9

pattern test ............................................ 8-10

single test ................................................ 8-8

SIO test ................................................. 8-10

DIMMER.................................................... 1-5

Display mode ............................................ 1-6

Draft (sonar) .............................................. 4-5

, 3-7

Echo averaging ......................................... 2-7

Echo tests ............................................... 8-11

Error messages......................................... 8-6

EVENT key................................................ 3-6

Event marks

deleting.................................................... 3-7

deleting all ............................................... 3-7

entering ................................................... 3-7

Fan replacement ....................................... 8-4

Ffunction keys

operating ................................................. 3-8

Fish alarm ................................................. 3-3

FISH ALARM key ...................................... 3-3

FISH key ................................................... 3-4

FISH marks

deleting all ............................................... 3-7

deleting individual.................................... 3-5

entering ................................................... 3-4

Function keys

programming ........................................... 3-9

Fuse replacement ..................................... 8-4

Gain

echosounder ........................................... 4-2

sonar ....................................................... 1-9

GAIN control (sonar) ................................. 1-9

Heading adjustment .................................. 7-3

Hull ............................................................ 8-2

Interference rejector

echosounder mode ................................. 4-4

sonar ....................................................... 2-5

Keying pulse.............................................. 7-4

Language .................................................. 7-4

Log pulse................................................... 7-4

Maintenance

cleaning................................................... 8-1

fan replacement ...................................... 8-4

fuse replacement..................................... 8-4

hull unit.................................................... 8-2

raising transducer manually .................... 8-3

Marks

deleting collectively ................................. 3-7

description............................................... 5-1

MARKS menu ........................................... 7-1

MENU tree ..............................................AP-1

Nav data source ........................................ 7-4

Noise limiter .............................................. 2-5

IN-1

Page 88

INDEX

OFF CENTER key .....................................3-5

Own ship position mark

deleting.....................................................3-7

entering ....................................................3-6

Panel test ...................................................8-9

Pattern test...............................................8-10

Picture advance speed

(echosounder mode)..................................4-3

Ports format ...............................................7-4

POWER switch ..........................................1-3

Pulse length ...............................................2-3

R/B key ......................................................3-2

Range

echosounder ............................................4-1

sonar ........................................................1-8

RANGE control ..........................................1-8

Range ring interval.....................................7-2

Remote controller.......................................1-2

Single test ..................................................8-8

SIO test ....................................................8-10

SONAR menu ..........................................1-15

SOUNDER menu .......................................4-5

Speed message .........................................7-4

STABILIZER key......................................3-10

System configuration ..................................viii

SYSTEM menu ..........................................7-3

Target lock .................................................3-1

TARGET LOCK key ...................................3-1

Tilt angle

automatic................................................1-10

surface fish.............................................1-12

TILT lever.................................................1-10

Tilt speed ...................................................7-4

Track

deleting.....................................................3-7

length .......................................................7-2

Train sector ................................................3-2

Transducer

lowering....................................................1-3

retracting ..................................................1-9

TRANSDUCER switch (down) ...................1-3

TRANSDUCER switch (up)........................1-9

Ttransmission.............................................1-4

TVG............................................................2-1

TX cycle .....................................................2-6

TX output ...................................................2-4

Units...........................................................7-4

Weak echo deletion (sonar) .......................4-5

IN-2

Page 89

(

)

Publication No. DOCQA0984

9-52 Ashihara-cho, Nishinomiya, 662-8580, Japan Tel: +81 (798) 65-2111 Fax: +81 (798) 65-4200

www.furuno.co.jp

EC Declaration of Conformity

We FURUNO ELECTRIC CO., LTD.

-----------------------------------------------------------------------------------------------------------------------------------------------

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

-----------------------------------------------------------------------------------------------------------------------------------------------

declare under our sole responsibility that the product

SCANNING SONAR CSH-5L and CSH-5LMARK-2

-----------------------------------------------------------------------------------------------------------------------------------------------

to which this declaration relates is in conformity with the following standard(s) or other normative document(s)

IEC 60945 Ed.3.0: 1996, clauses 9.2, 9.3, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8 and 10.9 IEC 60945 Ed.4.0: 2002, clauses 9.3 and 10.4

9.2, 10.3, 10.5 through 10.9 are identical to those specified in third edition)

-----------------------------------------------------------------------------------------------------------------------------------------------

(title and/or number and date of issue of the standard(s) or other normative document(s))

For assessment, see

(Manufacturer)

(Address)

(Model name, type number)

(NOTE Methods of testing and required test results of

• EMC Test Report FLI 12-02-035, O ctober 4, 2002 prepared by Furuno Labotech Intern ational Co., Ltd.

• Declaration K-10-18-306, November 16, 2015 prepared by Furuno Electric Co., Ltd.

This declaration is issued according to the Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility.

Nishinomiya City, Japan April 20, 2016

------------------------------------------------------

Place and date of issue)

On behalf of Furuno Electric Co., Ltd.

Yoshitaka Shogaki Department General Manager Quality Assurance Department

----------------------------------------------------------------------------------

name and signature or equivalent marking of authorized person

Page 90

(

)

Publication No. DOCQA0985

9-52 Ashihara-cho, Nishinomiya, 662-8580, Japan Tel: +81 (798) 65-2111 Fax: +81 (798) 65-4200

www.furuno.co.jp

EC Declaration of Conformity

We FURUNO ELECTRIC CO., LTD.

-----------------------------------------------------------------------------------------------------------------------------------------------

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

-----------------------------------------------------------------------------------------------------------------------------------------------

declare under our sole responsibility that the product

SCANNING SONAR CSH-8L and CSH-8LMARK-2

-----------------------------------------------------------------------------------------------------------------------------------------------

to which this declaration relates is in conformity with the following standard(s) or other normative document(s)

IEC 60945 Ed.3.0: 1996, clauses 9.2, 9.3, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8 and 10.9 IEC 60945 Ed.4.0: 2002, clauses 9.3 and 10.4

9.2, 10.3, 10.5 through 10.9 are identical to those specified in third edition)

-----------------------------------------------------------------------------------------------------------------------------------------------

(title and/or number and date of issue of the standard(s) or other normative document(s))

For assessment, see

(Manufacturer)

(Address)

(Model name, type number)

(NOTE Methods of testing and required test results of

• EMC Test Report FLI 12-02-034 and FLI 12-02-035, October 4, 2002 prepared by Furuno Labotech International Co., Ltd.

• Declaration K-10-18-306, November 16, 2015 prepared by Furuno Electric Co., Ltd.

Nishinomiya City, Japan April 20, 2016

------------------------------------------------------

Place and date of issue)

On behalf of Furuno Electric Co., Ltd.

Yoshitaka Shogaki Department General Manager Quality Assurance Department

----------------------------------------------------------------------------------

name and signature or equivalent marking of authorized person

Furuno CHS-5LMARK-2-55, CHS-5LMARK-2-68, CHS-8LMARK-2-107, CHS-8LMARK-2-85 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

IMPORTANT NOTICES

SAFETY INSTRUCTIONS

TABLE OF CONTENTS

FOREWORD

SYSTEM CONFIGURATION

1. OPERATIONAL OVERVIEW

1.1 Control Unit

1.2 Remote Controller (option)

1.3 Basic Operating Procedure

1.3.1 Turning on the power

1.3.2 Lowering the transducer

1.3.3 Transmitting

1.3.4 Adjusting backlighting of control unit

1.3.5 Choosing a display mode

1.3.6 Choosing the display range

1.3.7 Adjusting the gain

1.3.8 Retracting the transducer, turning off the power

1.4 Setting the Tilt Angle

1.4.1 Automatic tilt on/off

1.4.2 Bottom and tilt angle

1.4.3 How to discriminate fish echoes from the bottom

1.4.4 Points to consider

1.4.5 Tilt angle for surface fish

1.4.6 Suitable tilt angle

1.5 Finding Range and Bearing to a Target

1.6 Sonar Menu Overview

1.6.1 Operating procedure

1.6.2 Sonar menu description

2.1 Eliminating Unwanted Echoes

2.2 Displaying Surface Fish Clearly

2.3 Suppressing Bottom Tail

2.3.1 AGC

2.3.2 Pulse length

2.3.3 2ND AGC

2.5 Rejecting Sonar Interference and Noise

2.5.1 Identifying noise source

2.5.2 Rejecting noise with the interference rejector

2.5.3 Rejecting noise with the noise limiter

2.5.4 Rejecting interference with TX cycle

2.6 Choosing Beamwidth

2.6.1 Horizontal beamwidth

2.6.2 Vertical beamwidth

2.7 Deleting Weak Echoes

2.8 Echo Averaging

3. ADVANCED SONAR OPERATION

3.1 Tracking a School of Fish (target lock)

3.2 Detecting Schools of Fish Aurally

3.3 The Fish Alarm

3.4 Measuring Speed of School of Fish

3.4.1 Entering a fish mark

3.4.2 Deleting individual fish marks

3.5 Relocating School of Fish for Easy Observation

3.6 Event Mark, Own Ship Position Mark

3.6.1 Event mark

3.6.2 Entering an own ship position mark

3.6.3 Deleting an event mark

3.7 Collectively Deleting Marks

3.8 Function Keys (F1-F4)

3.8.1 Operating the function keys

3.8.2 Programming for fishing ground or target fish

3.8.3 Programming specific function

3.8.4 Confirming function key program

3.9 Suppressing Effects of Pitching and Rolling (Stabilizer)

4. ECHOSOUNDER MODE

4.1 Choosing the Range

4.2 Adjusting the Gain

4.3 Picture Advance Speed

4.4 Measuring Depth

4.5 Suppressing Interference

4.6 Suppressing Low Level Noise

4.7 Erasing Weak Echoes

4.8 Other Items on the Sounder Menu

5. MARKS AND DATA

5.1 Marks and Data on the Normal Display

5.2 Marks and Data on the Echosounder and Audio Displays

6. INTERPRETING THE DISPLAY