Furuno CSH-5L, CSH-8L User Manual

0 (0)

COLOR SCANNING SONAR

CSH-5L/CSH-8L

9-52 Ashihara-cho,

Nishinomiya, Japan

Telephone : 0798-65-2111

fax

: 0798-65-4200

All rights reserved.

Printed in Japan

PUB.No. OME-13190

( YOSH ) CSH-5L/8L

Your Local Agent/Dealer

FIRST EDITION : DEC . 2002

C : JUL . 06, 2004

*00080940402*

*00080940402*

* 0 0 0 8 0 9 4 0 4 0 2 *

*OME13190C00*

*OME13190C00*

* O M E 1 3 1 9 0 C 0 0 *

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.

WARNING

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.

i

CAUTION

Do not exceed 18 knots with the transducer lowered and do not exceed 16 knots when lowering or raising the transducer.

The transducer may become damaged.

Turn off the hull unit before using the hand crank.

Bodily injury may result if the power is not turned off.

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.

WARNING

Name: Warning Label (1)

Type: 86-003-1011-1

To avoid electrical shock, do not

remove cover. No user-serviceable

Code No.: 100-236-231

parts inside.

 

ii

TABLE OF CONTENTS

 

 

 

 

.............................................................................................................FOREWORD

vi

SYSTEM CONFIGURATION....................................................................................

vii

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 ......................................................................................

1-12

 

1.4.3

How to discriminate fish echoes from the bottom ...........................................

1-12

 

1.4.4

Points to consider...........................................................................................

1-13

 

1.4.5

Tilt angle for surface fish ................................................................................

1-13

 

1.4.6

Suitable tilt angle............................................................................................

1-14

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

 

1.6.3

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

iii

3. ADVANCED SONAR OPERATION ...................................................................

3-1

3.1

Tracking a Fish School (target lock)...........................................................................

3-1

3.2

Detecting Fish Schools Aurally ..................................................................................

3-3

3.3

The Fish Alarm ..........................................................................................................

3-4

3.4

Measuring Fish School Speed ...................................................................................

3-5

 

3.4.1

Entering a fish mark.........................................................................................

3-5

 

3.4.2

Deleting individual fish marks ..........................................................................

3-6

3.5

Relocating Fish School for Easy Observation ............................................................

3-6

3.6

Event Mark, Own Ship Position Mark.........................................................................

3-7

 

3.6.1

Event mark ......................................................................................................

3-7

 

3.6.2

Entering an own ship position mark .................................................................

3-8

 

3.6.3

Deleting an event mark....................................................................................

3-8

3.7

Collectively Deleting Marks........................................................................................

3-9

3.8

Function Keys (F1-F4).............................................................................................

3-10

 

3.8.1

Operating the function keys ...........................................................................

3-10

 

3.8.2

Programming for fishing ground or target fish ................................................

3-10

 

3.8.3

Programming specific function.......................................................................

3-11

 

3.8.4

Confirming function key program ...................................................................

3-12

3.9

Suppressing Effects of Pitching and Rolling (Stabilizer) ...........................................

3-13

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.............................................................................

4-6

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

Fish School................................................................................................................

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

iv

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

MENU TREE

........................................................................................................

AP-1

SPECIFICATIONS................................................................................................

SP-1

INDEX

..................................................................................................................

 

IN-1

v

FOREWORD

A Word to the Owner of the CSH-5L/CSH-8L

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

For over 50 years 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-5L and CSH-8L Color Scanning Sonars are full-circle electronic scanning sonars that detect and instantaneously display fish schools and underwater conditions in 16 colors.

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

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

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

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 fish school.

vi

SYSTEM CONFIGURATION

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

Transceiver Unit

CSH-5130

Motion Sensor

MS-100

Processor Unit

CSH-5210

Control Unit

CSH-5211

Navaid

Current Indicator

AD Converter

Speed Log

E/S Interface

Remote Controller

Speaker

Hull Unit

CSH-5040, 600 mm stroke

CSH-5041, 400 mm stroke

 

 

Pre-amplifier Unit

 

 

CSH-5020

 

Ship's Mains

 

 

: Standard Supply

 

100 VAC/

 

 

 

 

 

: Option

DC/AC

115 VAC/

 

 

: User Supply

200 VAC/

 

 

 

Inverter

 

 

 

220 VAC/

 

 

 

TR-2451

 

 

 

240 VAC,

 

 

 

 

 

 

 

24 VDC

1f, 50-60Hz

 

 

 

 

 

 

 

System configuration of CSH-5L

vii

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

Transceiver Unit

CSH-8030

Processor Unit

CSH-5210

Control Unit

CSH-5211

Navaid

Current Indicator

AD Converter

Speed Log

E/S Interface

Remote Controller

Speaker

Motion Sensor

 

 

Junction Box

Hull Unit

 

MS-100

 

 

CSH-1700

CSH-8040, 600 mm stroke

 

 

 

 

CSH-8041, 400 mm stroke

 

 

 

 

 

Ship's Mains

 

 

 

100 VAC/

 

 

DC/AC

115 VAC/

 

 

Inverter

200 VAC/

 

: Standard Supply

TR-2451

220 VAC/

 

: Option

 

240 VAC,

 

: User Supply

24 VDC

1f, 50-60Hz

 

 

 

 

 

System configuration of CSH-8L

viii

1.OPERATIONAL OVERVIEW

1.1Control 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.

Lowers the transducer.

 

 

 

Trackball

Raises the transducer.

 

 

 

Positions trackball

 

 

 

mark.

Turns power

 

Sets transducer

 

 

on/off.

 

 

 

 

tilt angle.

 

 

 

 

 

 

 

 

POWER

 

 

FISH

EVENT

 

 

 

 

 

 

 

 

TARGET

R/B

 

RANGE

GAIN

 

LOCK

 

 

TILT

 

 

 

 

 

 

 

F1

F2

 

FISH

STABI-

OFF

 

ALARM

LIZER

CENTER

F3

F4

 

ALARM

DELETE

MENU

 

ZONE

MARK

 

 

 

 

 

 

 

 

 

 

 

 

 

Adjusts receiver

 

 

 

 

 

 

 

 

sensitivity; chooses

FISH:

Inscribes fish mark.

 

menu option.

EVENT:

Inscribes event mark.

 

 

 

 

 

 

TARGET LOCK:

Tracks trackball-selected

 

 

 

 

 

position.

 

 

 

R/B:

Displays range and

Chooses display

 

 

bearing marks.

range; chooses

FISH ALARM:

Turns fish alarm on/off.

menu item.

STABILIZER:

Compensates for affects

 

 

 

 

 

of ship's pitching and

Execute assigned

 

 

rolling. (Requires Motion

 

 

Sensor MS-100.)

program; register

 

 

OFF CENTER:

Shifts the display.

function key program.

ALARM ZONE:

Sets fish alarm zone.

 

 

 

 

 

 

DELETE MARK:

Deletes selected mark.

 

 

 

MENU:

Opens/closes menu.

Control unit

1-1

1. OPERATIONAL OVERVIEW

1.2Remote Controller (option)

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

Hole for hanging

TILT Control p: Increases tilt angle.

q: Decreases tilt angle.

RANGE Control

p: Increases range. q: Decreases range.

Chooses menu item in menu operation.

GAIN Control

p: Increases gain. q: Decreases gain.

Chooses menu option in menu operation.

Remote controller

1-2

1. OPERATIONAL OVERVIEW

1.3Basic Operating Procedure

1.3.1Turning 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.

 

START UP TEST

XX.XX = Program Version No.

MAIN-0

1050729-XX.XX F F

 

 

ROM

= OK

 

 

 

RAM

= OK

 

 

 

VRAM

= OK

 

 

EEPROM (P.W)

= OK

 

 

TRX

1050742-XX.XX

1050733-XX.XX

 

 

ROM

= OK

 

 

 

RAM

= OK

 

 

KEY-0

1050730-XX.XX

F

 

 

ROM

= OK

 

 

 

RAM

= OK

 

 

 

 

 

 

 

Self test screen at start up (example: CSH-5L, 55 kHz transducer)

Note: The example screens shown in this manual may not match the screens you see on your display. The screen you see depends on your system configuration and equipment settings.

1.3.2Lowering 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 kt. Max allowable speed during raising lowering transducer is 16 kt.” and the audio alarm sounds. Press the [R/B] key to silence the audio alarm.

CAUTION

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

The transducer may become damaged.

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

1. OPERATIONAL OVERVIEW

1.3.3Transmitting

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.

 

** 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

:

1

 

 

2

 

 

 

 

 

 

4

 

 

 

 

 

 

 

3

 

 

DELETE COLOR

:

0

 

 

 

 

 

 

 

 

 

 

 

ECHO AVERAGE

:

1

 

 

 

 

 

 

 

 

 

 

 

INT REJECT

:

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOR BEAMWIDTH :

WIDE

NARROW

 

 

 

 

 

 

 

 

VER BEAMWIDTH :

 

 

NARROW

 

 

 

WIDE

 

 

 

 

COLOR

:

 

 

 

2

 

 

 

 

3

4

1

 

 

 

 

 

 

 

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

SONAR menu

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

1. OPERATIONAL OVERVIEW

1.3.4Adjusting 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)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:

SONAR

SOUNDER

MARKS

SYSTEM

 

 

[MENU MODE]

 

 

DIMMER

:

10

 

 

 

 

 

 

 

 

 

DISP SELECT

:

 

 

 

CURRENT

 

 

 

 

TEMP

 

 

 

 

 

HEADING ADJ

:

0°

 

 

 

 

 

 

 

 

 

AUTO RETRACT

:

OFF

(OFF, 5-16kt)OFF

 

 

 

SPEED MESSAGE :

 

 

OFF

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

:

 

 

 

 

400

 

 

 

 

 

200

 

 

 

 

 

 

 

 

PORT1 BAUDRATE :

19200

 

 

 

9600

 

 

2400

 

 

 

4800

 

 

 

PORT1 FORMAT

:

 

 

 

 

CIF

 

 

 

 

 

NMEA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT2 BAUDRATE :

19200

 

 

 

9600

4800

 

2400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT2 FORMAT

:

NMEA

 

 

CIF

 

 

 

 

 

NAV DATA

:

 

 

 

 

LC

DR

ALL

GPS

 

COMBI SCALE

:

 

 

 

 

LEFT

 

 

 

 

RIGHT

 

 

 

 

 

SUB TEXT INDI

:

 

 

 

 

ON

 

 

 

 

OFF

 

 

 

 

 

LANGUAGE

:

 

 

 

 

(JAPANESE)

ESPANOL

DANSK

ENGLISH

 

 

 

 

NEDERLND

FRANCAIS

ITALIANO

(KOREAN)

 

 

 

 

NORSK

 

 

 

 

 

 

TEST

: SINGLE

CONTI

PANEL

COLOR

 

 

 

: PATTERN

SIO

ECHO-1

ECHO-2

 

 

 

 

ECHO-3

ECHO-4

 

 

 

 

 

SET TO DEFAULT

: EXECUTE

 

 

 

 

 

PRESS [MENU] KEY TO EXIT

System menu

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

1. OPERATIONAL OVERVIEW

1.3.5Choosing 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

This mode is useful for detecting

 

 

 

 

 

 

 

 

 

 

 

 

(Sonar

and tracking fish schools.

 

 

 

 

 

 

display)

Navigation data can be displayed

 

 

 

 

 

Text window

 

 

 

 

 

 

in the text window, with

 

 

 

 

 

 

 

connection of appropriate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensors.

Sonar display

COMBI-1

Sonar picture appears on the left

Range and bearing marks

(Sonar +

and the audio display at the lower

 

Audio)

right side of the screen. This

Text window

 

mode is useful analyzing echoes

 

 

in a desired area.

Audio display

 

To activate the COMBI-1 mode,

 

 

do the following:

Sonar display

 

 

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

The sonar picture appears on the

 

 

 

 

 

 

Text window

(Sonar +

left and the signal fed from the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

echosounder)

echosounder at the lower right

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

side of the screen. This mode is

 

 

 

 

 

 

Echosounder

 

 

 

 

 

 

 

 

suitable for judging fish school

 

 

 

 

 

 

display

 

 

 

 

 

 

 

 

 

 

 

 

 

concentration.

Sonar display

1-6

1. OPERATIONAL OVERVIEW

Normal mode display (sonar display)

 

733

N

 

SHIP SPEED

12.4 kt

 

N

R 1000

 

708

 

 

 

246°

 

189

 

T 15°

SHIP COURSE

B

60S

 

(15)

LAT/LON

 

 

 

 

 

G 10.0

 

 

 

 

 

 

 

 

 

 

 

 

32°52.150N

 

 

 

 

132°12.150E

 

 

 

 

DEPTH

126m

 

 

 

 

WATER CURRENT

W

 

E

C1 1.2kt

342°

 

 

 

 

C2 0.8kt

298°

 

 

 

 

C3 0.4kt

256°

 

 

 

 

WATER TEMP 12.4°C

 

 

500

 

20min

10

0

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

12

 

 

 

 

S

 

10

 

 

 

 

 

 

 

 

Sonar display

Text Window

For description see Chapter 5.

COMBI-1 display (sonar display + audio display)

517

N

 

SHIP SPEED

12.4 kt DEPTH 126m

N Range &

 

500

Bearing Marks

R 1000 SHIP COURSE

246°

134

T 15°

 

 

 

LAT/LON

32°52.150N

B 60S

 

(15)

 

 

132°12.150E

 

 

G 10.0

 

 

 

 

 

 

WATER TEMP

20min 10

 

0

Text Window

 

 

For description see

 

12.4°C

14

 

 

 

 

 

 

Chapter 5.

 

 

12

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

-

 

0

 

 

 

 

 

W

E

 

 

 

 

 

 

 

 

 

-

Range Scale 500 -

500

-

S

 

R 517 B 60S

1000-

Range and bearing marks data

COMBI-1 display (sonar display + audio display)

1-7

1. OPERATIONAL OVERVIEW

COMBI-2 display (sonar display + echosounder display)

545

N

N

472

R 1000

272

T 30°

B 60S

(30)

 

G 10.0

500

S

SHIP SPEED

12.4 kt

DEPTH

126m

SHIP COURSE

246°

 

 

 

 

 

 

LAT/LON

32°52.150N

 

 

132°12.150E

 

WATER TEMP

20min 10

0

12.4°C

14

 

 

 

 

 

 

12

 

 

 

10

 

 

 

 

 

0--

E

 

 

 

 

 

 

-

Fish School

 

 

 

Depth Scale

100 -

 

 

 

 

 

-

Bottom

 

 

 

 

 

200 -

Text Window

For description see Chapter 5.

COMBI-2 display (sonar display + echosounder display)

1.3.6Choosing 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

1-8

1. OPERATIONAL OVERVIEW

1.3.7Adjusting 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 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.

Gain too low

Gain proper

Gain too high

Examples of proper and improper gain

1.3.8Retracting 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 kt. Max allowable speed during raising lowering transducer is 16 kt.” and the audio alarm sounds. Press the [R/B key to silence the audio alarm.

2.When the lamp above the [↑] switch lights, 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

1. OPERATIONAL OVERVIEW

1.4Setting 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

1.4.1Automatic tilt on/off

0° Horizontal direction (tilt: 0) Tilt angle range

+55°

Tilt range

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

1. OPERATIONAL OVERVIEW

Range and tilt angle

Range (m)

±2-10°

±4-14°

±6-20°

±10-26°

50, 85, 100, 150, 200, 250, 300, 350

±10°

±14°

±20°

±26°

400, 450, 500

±8°

±12°

±16°

±20°

600, 800

±6°

±10°

±14°

±20°

1000, 1200, 1600

±2°

±4°

±6°

±10°

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° → ...

Tilt Angle

Auto tilt concept

1-11

1. OPERATIONAL OVERVIEW

1.4.2Bottom 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.

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.

1.4.3How to discriminate fish echoes from the bottom

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

Case 1: Tilt angle 30 to 40 degrees

Fish school is obscured by the bottom echo.

Case 2: Tilt angle 10 to 20 degrees

Fish school is located above the bottom echo (midwater).

Case 3: Tilt angle 0 to 5 degrees

Fish school is located close to the bottom echo.

Case 1

Case 2

 

Case 3

 

 

 

 

b

 

 

a

a

a

Fish

school (a)

Fish school (a)

Fish school (a)

 

 

 

 

Bottom

Bottom

 

Bottom

(b)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Case 1

 

Case 2

 

Case 3

 

 

How to discriminate fish echoes from bottom

1-12

1. OPERATIONAL OVERVIEW

1.4.4Points to consider

As a general rule of thumb, a vertically distributed fish school is a better sonar target than a horizontally one, since it reflects the transmitted pulse back toward to the source.

In case 3, both fish schools (a) and (b) are presented. Generally speaking, however, midwater fish schools tend to be larger than bottom fish schools and they are often displayed near the bottom on the sonar screen.

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

1.4.5Tilt 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 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 fish schools 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-5L, 13° for CSH-8L

Sea surface

Tilt angle 0°

15°

Sea surface

Tilt angle 5-6° 15°

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

1-13

Furuno CSH-5L, CSH-8L User Manual

1. OPERATIONAL OVERVIEW

1.4.6Suitable 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.

Tilt angle setting

 

 

 

Detection range (m)

100

200

300

400

0°

(200)

(400)

(600)

(800)

20(40)

 

 

 

5°

 

 

 

 

40(80)

 

 

 

 

60(120)

 

 

 

10°

 

 

 

 

80(160)

 

 

 

 

100(200)

 

 

 

15°

(m) Depth

 

 

 

 

200(400)

 

 

 

 

Vertical width of sonar beam

 

300 m

 

200 m

 

 

 

100 m

 

 

 

 

 

 

15°

26 m

52 m

78 m

CSH-5L

 

 

 

300 m

 

100 m

200 m

 

 

 

 

13°

23 m

46 m

68 m CSH-8L

Depth, detection range and tilt angle

1.5Finding 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.

TRACKBALL DATA

î Slant range from own ship to trackball mark

è Horizontal range from own ship to trackball mark ê Depth to trackball mark

B Relative from own ship to trackball mark*

* = Relative bearing format may be selected with OTHER MARKS on the MARKS menu.

î

è

ê

B

Trackball mark

Own ship mark

Location of trackball data

1-14

1. OPERATIONAL OVERVIEW

1.6Sonar 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.

1.6.1Operating 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

:

1

 

 

 

2

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

3

 

 

DELETE COLOR

:

0

 

 

 

 

 

 

 

 

 

 

 

 

ECHO AVERAGE

:

1

 

 

 

 

 

 

 

 

 

 

 

 

INT REJECT

:

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOR BEAMWIDTH :

WIDE

NARROW

 

 

 

 

 

 

 

 

VER BEAMWIDTH :

 

 

 

NARROW

 

 

 

WIDE

 

 

 

 

COLOR

:

 

 

 

 

2

 

 

 

 

3

4

1

 

 

 

 

 

 

 

 

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

Sonar menu

1-15

1.OPERATIONAL OVERVIEW

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

Note: Items displayed in red are locked to prevent accidental change of setting. When any of those items are selected the display shown below appears, to ask you if you are sure to change the setting. To change the setting, use the [GAIN] control to choose YES and then press the [EVENT] key. The items colored in red turn green to show that they are available for adjustment.

SELECTED MENU IS LOCKED

ARE YOU SURE TO CHANGE? NO YES

PRESS [EVENT] KEY TO EXECUTE

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

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

1.6.3Sonar menu description

Description of sonar menu

Item

Description

Ref. page

DISPLAY MODE

Chooses the display mode among, COMBI-1

1-6

 

(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

2-6

 

operating 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

2-2

 

against strong echoes such as the bottom or a

 

 

large fish school, to suppress bottom tail.

 

2ND AGC

Suppresses bottom echo.

2-3

NOISE LIMITER

Suppresses unwanted reflections caused by

2-5

 

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.

 

1-16

1. OPERATIONAL OVERVIEW

Description of sonar menu (con’t from previous page)

Item

Description

Ref. page

COLOR

Adjusts color level against strong reflections. The

RESPONSE

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.

 

DELETE

Erases desired echo level from the display.

2-7

COLOR

 

 

ECHO

Specifies how long to leave afterglow on the screen.

2-7

AVERAGE

 

 

INT REJECT

Rejects random noise and sea surface reflections in

2-5

 

rough sea conditions.

 

HOR

Sets horizontal beamwidth for wide or narrow.

2-7

BEAMWIDTH

 

 

VER

Sets vertical beamwidth for wide or narrow.

2-7

BEAMWIDTH

 

 

COLOR

Chooses display colors for the sonar and audio

 

displays, among four choices. Choose a display

 

 

color to match your environment or fishing objective.

 

ERASE MARKS

Chooses the mark type to erase collectively, from

3-9

 

track, own ship, event and fish. For track, 10% of

 

 

the oldest track is erased.

 

ALARM LEVEL

Sets echo strength level which triggers the fish

3-4

 

alarm. The lower the setting the weaker the echo

 

 

which triggers the alarm.

 

AUTO TRAIN

Turns automatic transducer training on or off.

3-3

TRAIN SECTOR

Chooses train sector in automatic training.

3-3

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

Sets audio volume of loudspeaker.

3-3

VOLUME

 

 

ASSIGN

Chooses function key to program.

3-10

SETTING

 

 

ASSIGN MENU

Displays programs assigned to function keys.

3-12

1-17

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