OPERATOR'S MANUAL
COLOR SCANNING SONAR
CSH-5L
CSH-8L
MODEL
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The paper used in this manual
is elemental chlorine free.
・FURUNO Authorized Distributor/Dealer
9-52 Ashihara-cho,
Nishinomiya, 662-8580, JAPAN
Telephone : +81-(0)798-65-2111
Fax
: +81-(0)798-65-4200
A : DEC 2002
.
Printed in Japan
All rights reserved.
D : DEC. 16, 2011
Pub. No. OME-13190-D
(YOSH ) CSH-5L/8L
*00080940413*
*00080940413*
* 0 0 0 8 0 9 4 0 4 1 3 *
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IMPORTANT NOTICES
General
• The operator of this equipment must read and follow the descriptions in this manual. Wrong op-
eration 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 equip-
ment 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
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.
Cd
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.
Ni-Cd
Pb
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.
i
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SAFETY INSTRUCTIONS
Indicates a condition that can cause death or serious injury if
WARNING
not avoided.
Indicates a condition that can cause minor or moderate injury if
not avoided.
CAUTION
WARNING
WARNING
Use the proper fuse.
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Fuse rating is shown on the equipment.
Use of a wrong fuse can damage the
equipment.
Only qualified personnel
should work inside the
equipment.
Do not operate the equipment with wet
hands.
Immediately turn off the power at the
switchboard if water leaks into the
equipment or something is dropped in
the equipment.
Electrical shock can result.
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.
ii
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SAFETY INSTRUCTIONS
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.
CAUTION
Do not exceed 18 knots with the trans-
ducer lowered and do not exceed 16
knots when lowering or raising the
transducer.
Name: Warning Label (1)
Type: 86-003-1011-1
Code No.: 100-236-231
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.
iii
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TABLE OF CONTENTS
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
1.4.4 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..............................................................................................1-14
1.6.1 Operating procedure ....................................................................................1-14
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
2.5 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 Fish School (target lock)...........................................................................3-1
3.2 Detecting Fish Schools Aurally ..................................................................................3-2
3.3 The Fish Alarm...........................................................................................................3-3
3.4 Measuring Fish School Speed ...................................................................................3-4
3.4.1 Entering a fish mark .......................................................................................3-4
iv
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TABLE OF CONTENTS
3.4.2 Deleting individual fish marks.........................................................................3-5
3.5 Relocating Fish School 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 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
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
8.7 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
v
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TABLE OF CONTENTS
APPENDIX 1 MENU TREE .......................................................................................AP-1
INDEX..........................................................................................................................IN-1
vi
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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.
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 ex-
tensive global network of agents and dealers.
Your scanning sonar is designed and constructed to meet the rigorous demands of the marine en-
vironment. 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 purpos-
es.
Thank you for considering and purchasing FURUNO equipment.
Features
The FURUNO CSH-5L and CSH-8L Color Scanning Sonars are full-circle electronic scanning so-
nars 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 con-
ditions or specific function.
• Target lock feature tracks fish school.
vii
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SYSTEM CONFIGURATION
Monitor (MU-150C, etc., Max. 2)
Processor Unit
CSH-5210
Control Unit
CSH-5211
Transceiver Unit
CSH-5130
Navaid
Current Indicator
AD Converter
Speed Log
E/S Interface
Remote Controller
Speaker
Motion Sensor
MS-100
Hull Unit
CSH-5040, 600 mm stroke
CSH-5041, 400 mm stroke
Pre-amplifier Unit
CSH-5020
Ship's Mains
100 VAC/
115 VAC/
200 VAC/
220 VAC/
240 VAC,
: Standard Supply
: Option
: User Supply
DC/AC
Inverter
TR-2451
1
φ, 50-60Hz
24 VDC
System configuration of CSH-5L
viii
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SYSTEM CONFIGURATION
Processor Unit
CSH-5210
Monitor (MU-150C, etc., Max. 2)
Control Unit
CSH-5211
Transceiver Unit
CSH-8030
Navaid
Current Indicator
AD Converter
Speed Log
E/S Interface
Remote Controller
Speaker
Motion Sensor
MS-100
Hull Unit
CSH-8040, 600 mm stroke
CSH-8041, 400 mm stroke
Junction Box
CSH-1700
Ship's Mains
100 VAC/
115 VAC/
200 VAC/
220 VAC/
240 VAC,
DC/AC
Inverter
TR-2451
: Standard Supply
: Option
: User Supply
1
Ф
, 50-60Hz
24 VDC
System configuration of CSH-8L
ix
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SYSTEM CONFIGURATION
This page is intentionally left blank.
x
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1. OPERATIONAL OVERVIEW
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.
Lowers the transducer.
Trackball
Positions trackball
mark.
Raises the transducer.
Turns power
on/off.
Sets the tilt
angle.
EVENT
R/B
FISH
POWER
Color Scanning Sonar
TARGET
LOCK
RANGE
GAIN
TILT
FISH
STABI-
LIZER
OFF
F1
F3
F2
F4
CENTER
ALARM
ALARM
ZONE
DELETE
MARK
MENU
Adjusts receiver
sensitivity; chooses
menu option.
FISH:
EVENT:
Inscribes fish mark.
Inscribes event mark.
TARGET LOCK: Tracks trackball-selected
position.
R/B:
Displays range and
bearing marks.
Chooses display
range; chooses
menu item.
FISH ALARM:
STABILIZER:
Turns fish alarm on/off.
Compensates for affects
of ship's pitching and
rolling. (Requires Motion
Sensor MS-100.)
Execute assigned
program; register
OFF CENTER:
ALARM ZONE:
Shifts the display.
Sets fish alarm zone.
function key program.
DELETE MARK: Deletes selected mark.
MENU:
Opens/closes menu.
Control unit
1-1
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1. OPERATIONAL OVERVIEW
1.2
Remote Controller (option)
The remote controller provides armchair control of the tilt, range and gain.
Hole for hanging
RANGE Control
▲: Increases range.
▼: Decreases range.
TILT Control
▲: Increases tilt angle.
▼: Decreases tilt angle.
Chooses menu item
in menu operation.
GAIN Control
▲: Increases gain.
▼: Decreases gain.
Chooses menu option
in menu operation.
Remote controller
1-2
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1. OPERATIONAL OVERVIEW
1.3
Basic Operating Procedure
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.
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)
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
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
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1. OPERATIONAL OVERVIEW
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].
SYSTEM MENU
(RANGE CTRL: U/D, GAIN CTRL: L/R)
**
**
[MENU MODE]
: SONAR
SOUNDER
NORM
MARKS
COMBI-2
SYSTEM
DISPLAY MODE : COMBI-1
TX OUTPUT : 8
PULSE LENGTH : 8
TX CYCLE
TVG NEAR
TVG FAR
AGC
: 10
: 6
: 7
: 2
: 1
2ND AGC
NOISE LIMITER : 3
COLOR CURVE : 1
COLOR RESPONSE : 1
DELETE COLOR : 0
ECHO AVERAGE : 1
2
2
3
3
4
4
INT REJECT
: 1
HOR BEAMWIDTH: WIDE
VER BEAMWIDTH : WIDE
NARROW
NARROW
2
COLOR
: 1
3
4
ERASE MARKS : TRACK
SHIP
EVENT
FISH
ALARM LEVEL
AUTO TRAIN
TRAIN SECTOR : 10°
: 9
: ON
OFF
20°
40°
60°
AUTO TILT
TILT ANGLE
TRANSMISSION : ON
AUDIO VOLUME : 10
ASSIGN SETTING : F1 KEY
: ON
2-10°
OFF
4-14°
OFF
:
6-20°
10-26°
F2 KEY
F3 KEY
F4 KEY
ASSIGN MENU
PRESS [MENU] KEY TO EXIT
4. Use the RANGE control to choose [TRANSMISSION].
: EXECUTE
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
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1. OPERATIONAL OVERVIEW
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]
DIMMER
: SONAR
: 10
SOUNDER
MARKS
SYSTEM
DISP SELECT
HEADING ADJ
: TEMP
CURRENT
:
0°
AUTO RETRACT : OFF
SPEED MESSAGE : ON
(OFF, 5-16kt)OFF
OFF
ON
EXT KP SYNC
: OFF
AUTO TRAIN SPD : LOW
HIGH
HIGH
FEET
CURRENT
400
AUTO TILT SPD
UNIT
: LOW
: METERS
FATHOMS PA/BRA
NAV DATA GYRO+NAV
SHIP'S SPD/BR
LOG PULSE
:
LOG/GYRO
: 200
PORT1 BAUDRATE: 19200
PORT1 FORMAT : NMEA
PORT2 BAUDRATE: 19200
PORT2 FORMAT : NMEA
9600
CIF
9600
CIF
4800
4800
DR
2400
2400
ALL
NAV DATA
: GPS
LC
COMBI SCALE
SUB TEXT INDI
LANGUAGE
: RIGHT
: OFF
: ENGLISH
NEDERLND
NORSK
LEFT
ON
ESPANOL DANSK
ITALIANO
TEST
: SINGLE
: PATTERN
ECHO-3
CONTI
SIO
ECHO-4
PANEL
ECHO-1
COLOR
ECHO-2
SET TO DEFAULT : EXECUTE
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 de-
crease it.
6. Press the MENU key to close the menu.
1-5
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1. OPERATIONAL OVERVIEW
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)
This mode is useful for detecting
and tracking fish schools. Naviga-
tion data can be displayed in the
text window, with connection of ap-
propriate sensors.
Text window
Sonar display
COMBI-1 Sonar picture appears on the left
Range and bearing marks
Text window
(Sonar +
Audio)
and the audio display at the lower
right side of the screen. This mode
is useful analyzing echoes in a de-
sired area.To activate the [COMBI-
1] mode, do the following:
Audio display
1) Choose the [COMBI-1] mode.
2) Use the trackball to place the
trackball mark (+) on the bear-
ing desired.
Sonar display
3) Press the R/B key. The range
and bearing marks are in-
scribed on the sonar picture,
and the signal along the bear-
ing mark appears in the audio
display.
COMBI-2 The sonar picture appears on the
(Sonar +
echo-
left and the signal fed from the
echosounder at the lower right side
Text window
sounder) of the screen. This mode is suit-
able for judging fish school con-
centration.
Echosounder
display
Sonar display
1-6
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1. OPERATIONAL OVERVIEW
Normal mode display (sonar display)
N
733
N
SHIP SPEED 12.4 kt
R 1000
708
189
SHIP COURSE 246°
LAT/LON
T 15
(15)
°
B
60S
G 10.0
32°52.150N
132°12.150E
DEPTH
126m
WATER CURRENT
C1 1.2kt 342°
C2 0.8kt 298°
C3 0.4kt 256°
W
E
Text Window
For description
see Chapter 5.
WATER TEMP 12.4°C
20min
10
0
500
S
14
12
10
Sonar display
COMBI-1 display (sonar display + audio display)
N
517
500
134
SHIP SPEED
12.4 kt DEPTH 126m
N
Range &
Bearing Marks
R 1000
T 15
(15)
SHIP COURSE 246°
°
LAT/LON
32°52.150N
132°12.150E
B
60S
G 10.0
Text Window
For description
see Chapter 5.
20min 10
14
0
WATER TEMP
12.4°C
12
10
-
0
-
500 -
-
Range Scale
500
S
R 517 B 60S
1000-
Range and bearing marks data
COMBI-1 display (sonar display + audio display)
1-7
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1. OPERATIONAL OVERVIEW
COMBI-2 display (sonar display + echosounder display)
N
545
472
272
SHIP SPEED
12.4 kt DEPTH 126m
N
R 1000
T 30
(30)
SHIP COURSE 246°
°
LAT/LON
32°52.150N
132°12.150E
B
60S
G 10.0
Text Window
For description
see Chapter 5.
20min 10
14
0
WATER TEMP
12.4°C
12
10
-
-
0
-
Fish School
Depth Scale
100 -
-
500
S
Bottom
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 so-
nar 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
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1. OPERATIONAL OVERVIEW
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 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
1.3.8
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. Trans-
mission 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 dur-
ing 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 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 trans-
ducer 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.
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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 verti-
cally, 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 op-
erated 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.
0° Horizontal direction (tilt: 0)
Transducer
Tilt angle range
+55°
1.4.1
Automatic tilt on/off
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. Dis-
able 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 le-
ver.
To turn off automatic tilt, choose [OFF] at step 5. Note that automatic tilt range varies
with the range in use.
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
±10°
±8°
±6°
±2°
±14°
±12°
±10°
±14°
±20°
±16°
±14°
±6°
±26°
±20°
±20°
±10°
1000, 1200, 1600
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° → …
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1. OPERATIONAL OVERVIEW
Tilt Angle
Auto tilt concept
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.
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.
1.4.3
How 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:
Case 2:
Case 3:
Tilt angle 30 to 40 degrees
Fish school is obscured by the bottom echo.
Tilt angle 10 to 20 degrees
Fish school is located above the bottom echo (midwater).
Tilt angle 0 to 5 degrees
Fish school is located close to the bottom echo.
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1. OPERATIONAL OVERVIEW
Case 1
Case 2
Case 3
b
a
a
a
Fish school (a)
Bottom
Fish school (a)
Bottom
Fish school (a)
Bottom
(b)
Case 1
Case 2
Case 3
How to discriminate fish echoes from bottom
1.4.4
Points 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.
1.4.5
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 an-
gle 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 propa-
gates 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
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1. OPERATIONAL OVERVIEW
Sea surface
Tilt angle 0°
15°
Sea surface
Tilt angle 5-6°
15°
Tilt angle and surface fish (example: CSH-5L)
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.
Detection range (m)
Tilt angle setting
400
100
200
300
0°
(800)
(200)
(400)
(600)
20(40)
40(80)
5°
60(120)
10°
15°
80(160)
100(200)
200(400)
300 m
Vertical width of sonar beam
200 m
100 m
78 m
52 m
15°
26 m
CSH-5L
CSH-8L
300 m
200 m
46 m
100 m
23 m
68 m
13°
Depth, detection range and tilt angle
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1. OPERATIONAL OVERVIEW
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 tar-
get appear at the upper left corner of the sonar display.
TRACKBALL DATA
B
Trackball mark
Own ship mark
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*
* = Relative bearing format may be selected with
[OTHER MARKS] on the [MARKS] menu.
Location of trackball data
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.
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1. OPERATIONAL OVERVIEW
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]
DISPLAY MODE
TX OUTPUT
: SONAR
: COMBI-1
: 8
SOUNDER
NORM
MARKS
COMBI-2
SYSTEM
PULSE LENGTH : 8
TX CYCLE
TVG NEAR
TVG FAR
AGC
2ND AGC
: 10
: 6
: 7
: 2
: 1
: 3
: 1
NOISE LIMITER
COLOR CURVE
2
2
3
3
4
4
COLOR RESPONSE : 1
DELETE COLOR : 0
ECHO AVERAGE : 1
INT REJECT
: 1
HOR BEAMWIDTH : WIDE
VER BEAMWIDTH : WIDE
NARROW
NARROW
2
COLOR
: 1
3
4
ERASE MARKS
ALARM LEVEL
AUTO TRAIN
TRAIN SECTOR
AUTO TILT
: TRACK
: 9
: ON
: 10°
: ON
SHIP
EVENT
FISH
OFF
20°
OFF
4-14°
OFF
40°
60°
TILT ANGLE
:
2-10°
6-20°
10-26°
TRANSMISSION : ON
AUDIO VOLUME : 10
ASSIGN SETTING : F1 KEY
F2 KEY
F3 KEY
F4 KEY
ASSIGN MENU
: EXECUTE
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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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 1-6
+ Audio), [NORM] (Sonar) and [COMBI-2] (NORM +
Echosounder).
TX OUTPUT
Adjusts transmitter power.
2-4
2-3
PULSE LENGTH Chooses pulse length.
TX CYCLE
Removes interference caused by other sonars operat- 2-6
ing nearby.
TVG NEAR
TVG FAR
AGC
Adjusts receiving gain within 300 m.
Adjusts receiver gain beyond 300 m.
2-1
2-1
2-2
Automatically reduces the receiver gain only 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 sediments 2-5
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 bal-
anced picture. The larger the setting the better the res-
olution on weak signals.
—
COLOR RE-
SPONSE
Adjusts color level against strong reflections. The high- —
er 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 COLOR Erases desired echo level from the display.
2-7
2-7
ECHO AVER-
AGE
Specifies how long to leave afterglow on the screen.
INT REJECT
Rejects random noise and sea surface reflections in
rough sea conditions.
2-5
2-7
2-7
—
HOR BEAM-
WIDTH
Sets horizontal beamwidth for wide or narrow.
VER BEAM-
WIDTH
Sets vertical beamwidth for wide or narrow.
COLOR
Chooses display colors for the sonar and audio dis-
plays, among four choices. Choose a display color to
match your environment or fishing objective.
ERASE MARKS Chooses the mark type to erase collectively, from track, 3-7
own ship, event and fish. For track, 10% of the oldest
track is erased.
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1. OPERATIONAL OVERVIEW
Item
Description
Ref. page
ALARM LEVEL
Sets echo strength level which triggers the fish alarm. 3-3
The lower the setting the weaker the echo which trig-
gers the alarm.
AUTO TRAIN
Turns automatic transducer training on or off.
3-2
3-2
TRAIN SECTOR Chooses train sector in automatic training.
AUTO TILT
Turns automatic tilt on or off.
Sets automatic tilt range.
1-10
1-10
1-4
TILT ANGLE
TRANSMISSION Turns transmission on or off.
AUDIO VOLUME Sets audio volume of loudspeaker.
3-2
ASSIGN SET-
TING
Chooses function key to program.
3-8
ASSIGN MENU
Displays programs assigned to function keys.
3-9
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1. OPERATIONAL OVERVIEW
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2. FINE TUNING THE SONAR PIC-
TURE
2.1
Eliminating Unwanted Echoes
Echoes from targets such as bottom and fish return to the transducer in order of dis-
tance 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 dis-
played 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-5L/CSH-8L incorporates two TVG functions, NEAR and FAR, and they
mainly compensate for propagation loss on short and long ranges respectively, cen-
tered at the ranges shown below.
How TVG works
The TVG is also used to suppress unwanted echoes and noise which appear in a cer-
tain 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 fish school which is approaching own ship. Note that the
tilt should be kept adjusted so that the fish school is always placed in the center
of the sonar beam, i.e., so that the fish school is displayed in strongest colors pos-
sible. Check that the fish echo is displayed in the same color while it approaches.
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2. FINE TUNING THE SONAR PICTURE
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, fish schools (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 ech-
oes such as the bottom or a large fish school. Since weak echoes remain unaffected,
a small fish school becomes easier to detect. Adjust the AGC so it works only on bot-
tom 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
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2. FINE TUNING THE SONAR PICTURE
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.
2.3.3
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 long-
range detection but this can also be a disadvantage, since weaker echoes may be hid-
den 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
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2. FINE TUNING THE SONAR PICTURE
2.4
Suppressing Bottom and Sea Surface Reflec-
tions 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 aforemen-
tioned TVG and AGC, especially when the tilt angle is large in order to track fish
schools approaching within 400 m. In such cases try to reduce the output power with-
out turning down the gain. The picture becomes clearer when the output power is re-
duced 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.
Bottom echo masks
Fish echo
fish echo.
weakened
Improper
TVG and AGC
adjusted, OUTPUT
high.
Fish echo
OUTPUT decreased,
gain maintainted
Proper
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] (In-
terference Rejector), [NOISE LIMITER] or [TX CYCLE] on the [SONAR] menu as ap-
propriate.
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 condi-
tions. Set the interference rejector so that noise is just eliminated. Do not use an un-
necessarily 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.
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2. FINE TUNING THE SONAR PICTURE
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
Tx cycle high
Tx cycle lowered
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
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2. FINE TUNING THE SONAR PICTURE
2.6
Choosing Beamwidth
2.6.1
Horizontal beamwidth
If you wish to have better bearing discrimination (ability to distinguish two closely lo-
cated targets at the same range and different bearings) for fish schools and also wish
to examine the contour of bottom, set [HOR BEAMWIDTH] to [NARROW], on the [SO-
NAR] 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 fish schools or suppressing interference.
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.
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2. FINE TUNING THE SONAR PICTURE
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3. ADVANCED SONAR OPERATION
3.1
Tracking a Fish School (target lock)
Target lock, which requires speed and heading inputs, automatically tracks a fixed lo-
cation (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 lo-
cation you want to track.
2. Press the TARGET LOCK key.
The target lock mark appears ( ) on the echo selected and the bearing mark bi-
sects 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)
NNE (Relative bearing to target*)
B
Target lock
bearing mark
* 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 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 cancelled. It is resumed once target
lock is disabled.
Note 2: Target lock feature is cancelled 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.
A
B
C
D
55° 55°
Depth
Target lock and tilt angle
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3. ADVANCED SONAR OPERATION
3.2
Detecting Fish Schools 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 fish schools and bottom
through the built-in speaker.
After you've become accustomed to monitoring fish aurally, you should be able to de-
tect a fish school from a range longer than you can detect it on the screen. In addition
you may judge whether the fish school is approaching or going away; the tone be-
comes higher when the school is approaching and lower when the school is going
away.
1. Operate the trackball to place the trackball mark on the direction you want to mon-
itor 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 vol-
ume 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
* = 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).
3-2
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3. ADVANCED SONAR OPERATION
3.3
The Fish Alarm
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.
Starting Point
Alarm Area
Ending Point
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°
Within 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.
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3. ADVANCED SONAR OPERATION
3.4
Measuring Fish School Speed
To ensure a good haul, it is important to estimate the direction and speed of the fish
school 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 fish school, and then press the FISH
key. The latest fish mark ( ) appears on the fish school.
2. Wait 1 to 2 minutes.
3. Place the trackball mark on the same fish school 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 fish school are shown at the bottom right corner of the sonar
display.
Past Fish Mark (Max. 8)
Latest
Fish Mark
2nd Latest Fish Mark
Latest
Fish Mark
Wait 1-2
minutes
X
FIsh Mark Data
→
1076 (Horizontal range between fish marks)
787 (Horizontal range from own ship
to fish mark)
Place trackball
mark on
Place trackball mark
on fish echo's latest
location and press the
FISH key.
fish echo and
press the
153 (Depth)
FISH key.
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 (****).
Fish mark and fish mark data
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
as possible to increase accuracy of measurement. For more accurate measurement,
repeat the procedure two or three times.
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.
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3. ADVANCED SONAR OPERATION
Fish key pressed once:
Fish key pressed twice:
Fish key pressed three times:
Fish key pressed four times:
X
X
X
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 de-
lete. 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 Fish School 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.
Fish School
Fish School
Press
OFFCENTER
key.
Own Ship Mark
Trackball Mark
How to use the off-center function
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3. ADVANCED SONAR OPERATION
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 hor-
izontal 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 anchor-
ing chain that extends from surface to bottom. The buoy is fixed at its present geo-
graphical 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.
(35)
Stored when
EVENT key is
B
You observe picture from
direction of mark.
pressed.
A
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.
→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 (****).
Event mark data, shown at bottom left corner of the display
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3. ADVANCED SONAR OPERATION
Each time the key is pressed the appearance of the event marks changes as be-
low. Ten marks may be entered. When this amount is exceeded the oldest event
mark is automatically erased.
This data is used to display
First press of the EVENT key
latest event mark data.
2nd press of the EVENT key
1
3rd press of the EVENT key
2
3
1
2
4th press of the EVENT key
1
Latest Event Mark
Past Event Mark
Event marks
3.6.2
3.6.3
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 (U)
may be entered. When this amount is exceeded the oldest own ship position mark is
automatically erased.
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]:
[SHIP]:
The oldest 10% of the ship's track is erased with each press of the
EVENT key.
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
pressed.
6. Press the EVENT key to delete all of the mark type selected at step 5.
7. Press the MENU key to close the menu.
3-7
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3. ADVANCED SONAR OPERATION
3.8
Function Keys (F1-F4)
A function key may be programmed two ways: set up the equipment according to fish-
ing ground or target fish, or provide a shortcut for a menu item on the [SONAR] or
[SOUNDER] menu.
Sonar Menu Item
Function Key
F2 F3
F1
F4
Default program
TX OUTPUT
PULSE LENGTH
TX CYCLE
8
7
10
6
10
10
10
5
8
7
10
6
10
10
10
5
F1: Short-range detection
F2: Long-range detection
F3: Short-range detection
F4: Long-range detection
TVG NEAR
TVG FAR
6
8
6
8
HOR BEAMWIDTH
VER BEAMWIDTH
COLOR CURVE
COLOR RESPONSE
Narrow Narrow Narrow Narrow
Wide
Narrow Wide
Narrow
4
2
1
4
4
2
1
4
3.8.1
Operating the function keys
1. Press desired function key. The equipment is set according to function key pro-
gram, or a dialog box appears in case of shortcut operation. For shortcut opera-
tion, 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 op-
tion. (Be sure to press the function key within five seconds; the dialog box is au-
tomatically 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
TRACK SHIP EVENT SHIP
[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.
ARE YOU SURE TO CHANGE?
PRESS [EVENT] KEY TO EXECUTE
NO
YES
9. Use the GAIN control to choose [YES].
10. Press the EVENT key again.
The function key selected at step 7 is programmed.
11. Press the MENU key to close the menu.
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3. ADVANCED SONAR OPERATION
For detecting midwater fish
Useful programs (main items only)
For detecting surface fish
For detecting bottom fish
TX OUTPUT
TX OUTPUT
8
7
TX OUTPUT
PULSE LENGTH
TX CYCLE
8
PULSE LENGTH
TX CYCLE
7
PULSE LENGTH
TX CYCLE
5
8
10
5
10
5
10
TVG NEAR
TVG NEAR
TVG FAR
TVG NEAR
TVG FAR
6
TVG FAR
5
6
7
HOR BEAMWIDTH
VER BEAMWIDTH
COLOR CURVE
COLOR RESPONSE
Narrow HOR BEAMWIDTH
Narrow VER BEAMWIDTH
Narrow HOR BEAMWIDTH
Narrow
Wide
VER BEAMWIDTH
COLOR CURVE
Wide
1
3
COLOR CURVE
4
1
3
3
COLOR RESPONSE
COLOR RESPONSE
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], [AS-
SIGN 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
F2
F3
F4
F1 KEY
F2 KEY
TVG NEAR
TVG FAR
Function key assignment confirmation screen
5. Press the MENU key to close the menu.
3-9
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3. ADVANCED SONAR OPERATION
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 proce-
dure below to use the stabilizer feature.
Tilt angle
Stabilizer activated
on front beam
compensated
Ship tilts
in bow direction
Not displayed
Displayed
Displayed
Displayed
Not displayed
Not displayed
(You want to
display this
fish school)
Beam before
stabilizer activated
No pitching
and rolling
Ship is pitching and
rolling
Stabilizer turned ON
(Tilt angle compensated in one
direction only. Echo in opposite
direction is not displayed.)
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.
STAB
Stabilizer ON
Stablizer Mark
Picture is stabilizer
on bearing chosen
with this mark.
B 45S
Stablizer bearing data
Stabilizer mark
Note: If the target lock function is active when the stabilizer is turned on, the sta-
bilizer works on the bearing selected for the target lock feature (target lock func-
tion 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. 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
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 de-
sired depth.
Shift
Display
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
3. Use the GAIN control to choose [SOUNDER].
SOUNDER MENU
(RANGE CTRL: U/D, GAIN CTRL: L/R)
**
**
[MENU MODE]
: SONAR
SOUNDER
2
MARKS
3
SYSTEM
4
COLOR
: 1
RANGE
SHIFT
: 160
: 0
E/S INT REJECT : ON
OFF
GAIN
: 3.0
CLUTTER
ADVANCE
: 2.0
: 2/1
1/8
: LINEAR
1/1
1
1/2
2
1/4
3
COLOR CURVE
DELETE COLOR : 0
DRAFT
: 0.0(m)
PRESS [MENU] KEY TO EXIT
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. 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.
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4. ECHOSOUNDER MODE
4.3
Picture Advance Speed
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 fish school 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" dis-
plays one scan line per two transmissions.
6. Press the MENU key to close the menu.
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.
N
839
810
217
SHIP SPEED
12.4 kt DEPTH 126m
N
R 1000
SHIP COURSE 246°
T 15
°
LAT/LON
32°52.150N
132°12.150E
(159
G 10.0
B 60S
20min 10
14
0
WATER TEMP
12.4°C
12
10
-
-
0
-
Depth to cross-hair
cursor intersection
100 -
101
Cross hair-cursor
500
-
200 -
S
Measuring depth
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4. ECHOSOUNDER MODE
4.5
Suppressing Interference
Interference from other sounders or electrical interference shows itself on the screen
as in the illustration below.
Interference from
other sounders
Inteference from
electrical equipment
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
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.
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4. ECHOSOUNDER MODE
4.7
Erasing Weak Echoes
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 reflections
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].
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
COLOR
Description
Ref. page
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 bal-
anced 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
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5. MARKS AND DATA
5.1
Marks and Data on the Normal Display
Freeze condition (for testing)
Range (Shown several
seconds when range
is changed.)
TX Off
Trackball Mark Data
Range
Slant Range
Horizontal Range
Depth
Tilt Angle
Stabilizer
On*
(Auto Tilt value)
Gain
Function Key Number
Heading*
B Relative Bearing*
TX OFF STAB
R 1000
372 freeze
359
N
SHIP SPEED 12.4 kt
Speed*
N
R 1000
T 15
°
96
SHIP COURSE 246°
LAT/LON
Course*
2nd Latest Fish
Stablilizer
(15)
G 10.0
F1
B 60S
Fish Mark* Mark*
Mark*
Fish Mark*
32°52.150N
132°12.150E
Range Mark
Position*
Depth*
Heading Mark
Bearing
Mark
Trackball Mark
DEPTH
126m
Latest Event
Mark*
WATER CURRENT
Current Data
(current speed
and direction
for 3 layers)*
North Mark*
Own Ship
C1 1.2kt 342°
C2 0.8kt 298°
C3 0.4kt 256°
W
E
Bearing
Scale
1
3
Mark
Current Mark*
Event Mark*
2
Target Lock
Mark*
1
Own Ship Position
Mark*
Temperature*,
Temperature
Graph*
WATER TEMP 12.0°C
557
149
SW/W
238
493
132
20min
10
0
500
Range Ring,
B
14
12
10
Ship's Track*
Range Ring Data
Note: No or
missing
Bearing Mark
450
15
data in text
window
S
S 10.5kt
(m) C ESE
( 121)
R 450 B 224°
B NW
shown with
asterisks.
Target Lock Data* Fish Mark Data*
Event Mark Data*
Horizontal Range
Depth
( ) Depth at time of entry
B True Bearing*
Range between
fish marks
Range to fish
mark
238
Range and
Bearing Data
Range
Depth
557
149
493
B SW/W Bearing
Depth
132
S 10.5kt
Speed
* = Requires appropriate sensor.
Temperature Graph
Course
(m) C ESE
20min
10
0
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.
14
12
10
Temperature
data regained
Temperature data lost
Marks and data on the normal display
5-1
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5. MARKS AND DATA
Description of marks and data on the normal display
Mark/Data
Description
Own Ship Mark
Shows own ship's present position and points in bow direction.
North Mark*
When a heading sensor is connected, the North mark is displayed and
points to North.
North mark
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.
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°.
Heading
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.
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
Trackball mark data: , slant range; →, Horizontal range; ↓, Depth,
B, Bearing. Appears at top left corner of the sonar display.
Trackball Mark Data
→
↓
B
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
B
B
P
S
Indication format may be selected with OTHER MARKS on the MARKS
menu.
Range Data
R
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.
T
°
(
)
Gain
The gain chosen with the GAIN control appears on the top right
corner of the sonar display.
G
Function Key Number
F
Function key number appears at the top right corner of the sonar
display.
* = Requires appropriate sensor.
5-2
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5. MARKS AND DATA
Description of marks and data on the normal display (con't from previous page)
Mark/Data
Description
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.
Range Rings
500
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.
N
W
E
S
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.
Ship's Track Mark*
3
2
Current
Mark*
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.
1
Current Data*
°
°
°
C1: . kt
C2: . kt
C3: . kt
Current speed range: 0.0 to 9.9 kt
Direction range: 180° or 0-359°
Own Ship Position Data*
With navigation input, position can be displayed in latitude and long-
itude (or Loran C TDs) in the text window.
°
.
N
°
.
E
Latitude range: 90°00.000S to 90°00.000N
Longitude range: 179°59.999S to 179°59.999E, 180°00.000
Nav Data*
With appropriate sensors, speed, course, water depth and
water temperature can be displayed in the text window.
Speed range: 0.0-40 kts
SHIP SPEED:
SHIP COURSE:
.
kt
°
Course range: 0-359°
Depth range: 0-9999 m (same range for any depth unit)
Water temperature range: -10.0 to 40.0 °C
DEPTH:
WATER TEMP:
m
°
.
Target Lock Mark*
The target lock mark automatically tracks the fish school selected
by the operator. This function requires speed and heading data.
Target Lock Mark Data*
The slant range (→), depth (↓) and bearing (B) of the fish echo are
shown at the bottom left corner on the sonar display.
→
↓
B
°
5-3
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5. MARKS AND DATA
Description of marks and data on the normal display (con't from previous page)
Mark/Data
Description
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
Event Mark
1
. . .
1
2
3
9
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 move-
movement 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.
→
↓
)
(
B
°
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:
Latest Fish Mark
2nd Latest Mark
Fish Mark
1st press of FISH key
2nd press of FISH key
3rd press of FISH key
4th press of FISH key
Fish Movement Data
→
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.
→
↓
S
C
.
Range and Bearing
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.
Marks
Bearing
mark
Range
mark
Range (R) and bearing (B) marks data are shown at the bottom of the
display when the range and bearing marks are displayed.
Range and Bearing
Marks Data
R
B
°
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.
Stabilizer
mark
5-4
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5. MARKS AND DATA
5.2
Marks and Data on the Echosounder and Audio
Displays
N
SHIP SPEED
12.4 kt DEPTH 126m
N
Speed*, Depth
Course*
SHIP COURSE 246°
SONAR MARKS AND INDICATIONS
SAME AS ON NORMAL DISPLAY
LAT/LON
32°52.150N
132°12.150E
Position*
Range and
Bearing Marks
20min 10
14
0
WATER TEMP
12.4°C
Temperature*,
Temperature
Graph*, *1
12
10
-
-
0
Net Sonde
Mark (orange)*, *2
-
100 -
Color
Bar
-
Cross-hair Cursor
500
200 -
-
205
Depth to
cross-hair cursor
intersection *3
S
300-
R 552 B 60S
Depth Scale *4
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.
WATER CURRENT
Note: Range and bearing marks
are used to choose the
location to display in the
audio display.
C1 1.2kt 342°
C2 0.8kt 298°
C3 0.4kt 256°
WATER TEMP
12.4°C
Marks and data on the echosounder and audio displays
5-5
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5. MARKS AND DATA
Description of marks and data on the echosounder and audio displays
Mark/Data
Color Bar
Description
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.
0 -
-
100 -
-
200 -
-
300 -
Cross-hair Cursor
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.
Depth or
200
Range
The net sonde marks are orange horizontal lines (solid or dashed
line) which mark the location of the net sonde fed from the
echosounder.
Net Sonde Mark*
(Echosounder display
only)
5-6
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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.
(A) Flat bottom
Tilt angle: 10° to 15°
Decreased tilt angle
Only half of vertical
beam width captures
the bottom.
(B) Flat bottom
Tilt angle: 20° or more
Bottom is displayed
narrower and in
stronger colors when
compared to (A).
(C) Solping bottom
Tilt angle: 20° or more
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.
Bottom echoes
6-1
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6. INTERPRETING THE DISPLAY
6.2
Fish School
A fish school appears as a mass of echoes. The color of the mass shows the density.
To know the distribution and center point of a fish school, choose several different tilt
angles.
(A) Sea surface fish
Tilt angle: 0° to 10°
Bottom echo
not displayed
because of
decreased tilt
angle. Sea
surface
Fish
school
reflections are
present.
Sea surface
reflections
(B) Midwater, bottom fish
Tilt angle: 30° or more
Fish echo which appears before bottom can be detected.
Bottom
Fish
school
Large midwater
fish school is
present.
Tilt angle: 0° to 20°
Fish echo which appears together with
or after bottom can be detected.
Fish
school
Bottom
To search bottom fish,
use a narrow tillt angle so
the bottom echo will be
weak, enabling you to
see bottom fish echoes.
Fish echoes
6-2
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6. INTERPRETING THE DISPLAY
6.3
Sea Surface Reflections
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.
Sea surface
Tilt angle
indication
Tilt: 0°
Sea surface
reflections
Sea surface
Tilt: 5-6°
Sea surface reflections
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 fish school. On the other hand,
the wake contains a lot of air bubbles which attenuate ultrasonic energy, making it of-
ten difficult to sound beyond the wake.
Other
ship
Own
ship
Own ship’s
screw noise
Wake produced
by other ship
Own ship’s wake
(produced when
own ship turns)
Own ship’s
screw noise
Wake
6-3
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6. INTERPRETING THE DISPLAY
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 wa-
ter 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.
Mainlobe echo
Sidelobe echo
Sidelobe
Mainlobe
The bottom echo
detected by sidelobe
appears at a certain
tilt angle when the
sidelobe points ver-
tically. Also, poor
soundome projection
may result in a similar
false echo.
Sidelobe echo
6.6
Noise and Interference
If the fishing ground is crowded with many fishing boats, the sonar is subject to inter-
ference from ultrasonic equipment such as an echo sounder, sonar, etc. on board oth-
er 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.
(A) Interference from
other sonar
(B) Electrical
Interference
(C) Marine life noise
Noise and interference
6-4
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7. MARKS AND SYSTEM MENUS
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
MARKS MENU
(RANGE CTRL: U/D, GAIN CTRL: L/R)
**
**
[MENU MODE]
RANGE RINGS
: SONAR
SOUNDER
1/2R
MARKS
OFF
SYSTEM
: 1/4R
BEARING SCALE : ON
CURRENT VECTOR : ON
OFF
OFF
CURRENT DIR
SHIP'S TRACK
COURSE
HEADING
CURRENT DATA : 32CMPS
: TO
: 10R
: 32CMPS
: 32CMPS
FROM
5R
OFF
360TRUE
360TRUE
360TRUE
360TRUE
360°
OFF
180°
180°
360°
360°
EVENT/FISH
OTHER MARKS
: 32CMPS
: 180°
POSITION DATA : L/L
TD
PRESS [MENU] KEY TO EXIT
7-1
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7. MARKS AND SYSTEM MENUS
MARKS menu description
Item
Description
Ref. Page
RANGE RINGS
Turns the range rings on/off and chooses range ring inter-
val, 1/4 or 1/2 the range. When turned off, the north mark
and heading mark are also turned off.
5-3
BEARING SCALE Turns the electronic bearing scale on/off.
5-3
5-3
CURRENT VEC-
TOR
Turns the current (tide) mark on/off.
CURRENT DIR
Turns current (tide) data on or off. "FROM" shows what di-
rection the current is flowing; "TO" shows the direction the
current is heading. Requires a current indicator.
5-3
Current Mark
2
1
3
1
3
2
FROM
TO
SHIP'S TRACK
Turns ship's track display on/off. 5R and 10R are the
amount of track to display; that is, the length of the track
shown on the display is five and ten times the range, re-
spectively.
5-3
COURSE
HEADING
Chooses how to display course, in 32 compass points or
360° true.
5-3
5-2
5-3
Chooses how to display heading, in 32 compass points or
360° true.
CURRENT DATA Choose how to display current (tide) data, 32 compass
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 direc-
Event MK: 5-5
Fish MK: 5-4
tion is shown as "xxxS" and port direction as "xxxP." True 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
or Loran TDs.
5-3-
7-2
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7. MARKS AND SYSTEM MENUS
7.2
SYSTEM Menu
SYSTEM MENU
(RANGE CTRL: U/D, GAIN CTRL: L/R)
**
**
: SONAR
: 10
[MENU MODE]
DIMMER
SOUNDER
MARKS
SYSTEM
DISP SELECT
HEADING ADJ
: TEMP
CURRENT
:
0°
AUTO RETRACT : OFF
SPEED MESSAGE : ON
(OFF, 5-16kt)OFF
OFF
ON
EXT KP SYNC
: OFF
AUTO TRAIN SPD : LOW
HIGH
HIGH
FEET
CURRENT
400
AUTO TILT SPD
UNIT
: LOW
: METERS
FATHOMS PA/BRA
NAV DATA GYRO+NAV
SHIP'S SPD/BR
LOG PULSE
:
LOG/GYRO
: 200
PORT1 BAUDRATE: 19200
PORT1 FORMAT : NMEA
PORT2 BAUDRATE: 19200
PORT2 FORMAT : NMEA
9600
CIF
9600
CIF
4800
4800
DR
2400
2400
ALL
NAV DATA
: GPS
LC
COMBI SCALE
SUB TEXT INDI
LANGUAGE
: RIGHT
: OFF
: ENGLISH
NEDERLND
NORSK
LEFT
ON
ESPANOL DANSK
ITALIANO
TEST
: SINGLE
: PATTERN
ECHO-3
CONTI
SIO
ECHO-4
PANEL
ECHO-1
COLOR
ECHO-2
SET TO DEFAULT : EXECUTE
PRESS [MENU] KEY TO EXIT
Description of [SYSTEM] menu
Item
Description
Ref. Page.
1-5
DIMMER
Adjust control panel backlighting.
DISP SELECT
Chooses whether to display current (tide) data or temperature
data in the combination displays.
5-5
HEADING ADJ
Compensates for error (compensation range: 0-359°) in head-
ing 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.
—
7-3
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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 da-
ta. The transducer may be retracted at a speed different from
set here if the speed data is wrong. Reduce the ship's speed be-
low 16 knots and then retract the transducer.
—
SPEED MESSAGE Turns on/off ship's speed warning message.
EXT KP SYNC Turn on when using external keying pulse.
8-6
—
AUTO TRAIN SPD Chooses scanning speed of bearing mark; high or low. High
speed is useful for general searching and tracking fast moving
fish schools.
—
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
meters, 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
LOG PULSE
Chooses source of speed and course data with which to draw
ship's track. The choices are log/gyrocompass, current indica-
tor, nav data and gyro+nav data.
—
Chooses log pulse/mile specification of speed log; 200 or 400
pulses/mile.
—
—
PORT1 BAUD
RATE
Sets baud rate of equipment connected to port 1, among 2400,
4800, 9600 and 19200 (bps).
PORT1 FORMAT
Sets format of equipment connected to port 1; NMEA or CIF
(Furuno).
—
PORT2 BAUD
RATE
Sets baud rate of equipment connected to port 2, among 2400,
4800, 9600 and 19200 (bps).
—
PORT2 FORMAT
Sets format of equipment connected to port 2; NMEA or CIF
(Furuno).
—
NAV DATA
Chooses source of nav data among GPS, LC (Loran C), DR
(Dead Reckoning) or ALL. "ALL" automatically chooses source
in the order of GPS, Loran C and dead reckoning.
5-6
COMBI SCALE
Chooses the location of the depth scale and distance scale in
the combination displays, right or left side.
—
SUB TEXT INDI
LANGUAGE
For use by service technicians. Normally turn this indication off.
—
—
Choose the language to display among English, Japanese, Ko-
rean and several European languages.
TEST
Chooses the test to execute.
8-7
—
SET TO DEFAULT Restores all default settings, including controls. Choose this
item and then press the EVENT key to restore all default set-
tings.
7-4
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8. MAINTENANCE,
TROUBLESHOOTING
NOTICE
WARNING
D
o not apply paint, anti-corrosive
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
sealant or contact spray to plastic
parts or equipment coating.
This equipment uses high
voltage that can cause
electrical shock.
0nly qualified persons can
work inside the equipment.
Those items contain products that can
damage plastic parts and equipment
coating.
8.1
8.2
General Maintenance
This equipment is designed and constructed to provide many years of trouble-free per-
formance 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.
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.
8-1
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8. MAINTENANCE, TROUBLESHOOTING
8.3
Hull Unit Maintenance
8.3.1
Lubrication points, zinc plate
Apply MOLYTONE grease
#2 (or equivalent)
every six months.
Raise transducer and coat main
shaft with DAPHAECOROAEX #2
(or equivalent) every six months.
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
Dry dock ship and clean
transducer face yearly.
Apply single coat of
"MARINE STAR 20 Mod
(Red-N)" (or equivalent)
anti-foulant to transducer
face to keep marine life off
the transducer. Do not use
solvents to clean the trans-
ducer and do not paint the
transducer face.
leakage in the vessel.
HULL UNIT
Hull unit maintenance points
8-2
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8. MAINTENANCE, TROUBLESHOOTING
8.3.2
Manually raising the transducer
If the transducer cannot be raised automatically, manually raise it as follows:
CAUTION
Turn off the hull unit before using the
hand crank.
Bodily injury may result if the power is not
turned off.
1. Turn off the hull unit's POWER switch.
2. Open the gear cover.
Screw
Gear cover
(M4 X 8,
4 pcs.)
Screw shaft gear
Motor gear
OFF
ON
POWER switch
Hull unit
3. Mount the hand crank onto the screw shaft gear or motor gear.
b) Mounting hand crank
on motor gear
(Requires less force but
greater number of turns.)
a) Mounting hand crank
on screw shaft gear
(Requires greater force but
smaller number of turns.)
Hand crank
Motor gear
Fix with screw
(Use cover fixing screw.)
Fix with screw
(Use cover fixing screw.)
Screw shaft gear
120 turns to move main shaft
by 600 mm.
210 turns to move main shaft
by 600 mm.
Hand crank
4. Turn the hand crank clockwise to raise the transducer.
8-3
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8. MAINTENANCE, TROUBLESHOOTING
8.4
Fuse Replacement
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment.
The fuses in the processor and transceiver units protect them from overvoltage, equip-
ment 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
FGBO-A 2A AC125V
FGMB 2A 250V
Code No.
000-549-062
000-122-000
000-549-013
000-122-000
000-546-707
Processor Unit
Transceiver Unit
(100 VAC spec.)
FGBO 7A AC125V
FGMB 2A 250V
Transceiver Unit
(220 VAC spec.)
FGBO 4A AC250V
8.5
Fan Replacement
The processor unit has a fan, and its life is about 25,000 hours, in ambient tempera-
ture of 50°C.
If the fan stops, because the area around the power supply is too hot, the power volt-
age 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
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8. MAINTENANCE, TROUBLESHOOTING
8.6
Troubleshooting
The table below provides common symptoms of equipment troubles and the means to
rectify them.
Symptom
Check, Remedy
Cannot turn on the • Check power cable.
power
• Check ship's mains.
• First check the fuse in the processor unit. If it is OK, have a qual-
ified technician check the fuse in the transceiver unit.
Bottom echo be-
comes irregular
• 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.
Weak echo
• Output power set to minimum. Set [TX OUTPUT] ([SONAR]
menu) to maximum.
• Excessive TVG. Readjust TVG NEAR and FAR on the [SO-
NAR] menu.
Somewhat strange • Brilliance too low. Adjust display brilliance.
color
Picture contains
noise
• Equipment not grounded properly. Check equipment ground.
• Power cable is too close to the signal cable. Relocate power ca-
ble or signal cable.
• Debris may be on sea surface. Reject unwanted noise with the
interference rejector on the [SONAR] menu.
Picture does not
change when tilt
angle is changed
• 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.
Error messages
Message
Meaning, Remedy
Overvoltage
OVERVOLTAGE
RETRACT TRANSDUCER AND TURN OFF
Excessive voltage detected. The message flash-
es and the audio alarm sounds. Retract the
POWER. PRESS R/B KEY TO CLEAR ALARM. transducer and then turn off the power. Press the
R/B key to silence the audio alarm. Have a tech-
nician check the set.
Transducer not retracted
TRANSDUCER NOT RETRACTED
CUT OFF POWER LINE TO PROCESSOR
AND POWER SUPPLY. PRESS R/B KEY TO
CLEAR ALARM.
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.
High speed
WARNING
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.
MAX ALLOWABLE SPEED FOR EXTENDED
TRANSDUCER IS 16 KT. MAX ALLOWABLE
SPEED DURING RAISING/LOWERING
TRANSDUCER IS 16 KT. PRESS R/B KEY TO Reduced speed to less than 16 knots, and the
CLEAR ALARM.
previously used display appears.If you attempt
to lower the transducer when the speed is higher
than 16 knots the message flashes and the au-
dio alarm sounds. (The transducer is neither
raised nor lowered.)
WARNING
Ship's speed is higher than 18 knots with the
TRANSDUCER IS KEPT EXTENDEDREDUCE transducer extended. The message flashes and
SHIP'S SPEED AND PRESS ↑ TO RETRACT
TRANSDUCER. ACTIVATING AUTOMATIC
RETRACTION. PRESS R/B KEY TO CLEAR
MESSAGE.
the audio alarm sounds. Press the R/B key to si-
lence the audio alarm. Lower speed below 18
knots, and the previously used display appears.
Automatic retraction
ACTIVATING AUTOMATIC RETRACTION
PRESS R/B KEY TO CLEAR MESSAGE.
Transducer is being retracted because ship
speed set for automatic retraction has been
reached. (The message appears if [AUTO RE-
TRACT] in the [SYSTEM] menu is turned on.)
Press the R/B key to clear the message.
8-6
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8. MAINTENANCE, TROUBLESHOOTING
8.8
Diagnostic Tests
This unit has 10 diagnostic tests (eight with the CSH-8L) which check it for proper per-
formance. 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)
**
**
: SONAR
: 10
[MENU MODE]
DIMMER
SOUNDER
MARKS
SYSTEM
DISP SELECT
HEADING ADJ
: TEMP
CURRENT
:
0°
AUTO RETRACT : OFF
SPEED MESSAGE : ON
(OFF, 5-16kt)OFF
OFF
ON
EXT KP SYNC
: OFF
AUTO TRAIN SPD : LOW
HIGH
HIGH
FEET
CURRENT
400
AUTO TILT SPD
UNIT
: LOW
: METERS
FATHOMS PA/BRA
NAV DATA GYRO+NAV
SHIP'S SPD/BR
LOG PULSE
:
LOG/GYRO
: 200
PORT1 BAUDRATE: 19200
PORT1 FORMAT : NMEA
PORT2 BAUDRATE: 19200
PORT2 FORMAT : NMEA
9600
CIF
9600
CIF
4800
4800
DR
2400
2400
ALL
NAV DATA
: GPS
LC
COMBI SCALE
SUB TEXT INDI
LANGUAGE
: RIGHT
: OFF
: ENGLISH
NEDERLND
NORSK
LEFT
ON
ESPANOL DANSK
ITALIANO
TEST
: SINGLE
: PATTERN
ECHO-3
CONTI
SIO
ECHO-4
PANEL
ECHO-1
COLOR
ECHO-2
SET TO DEFAULT : EXECUTE
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
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 indi-
cated 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.
CONTI TEST
Processor unit's program version no.
and results of ROM, RAM, VRAM
and EEPROM tests.
MAIN-0 1050729-XX.XX F FF
ROM
RAM
= OK
= OK
VRAM = OK
0 = Version No. of Board
EEPROM (P.W) = OK
Transceiver unit's program
version no. (CSH-5L only)
and results of ROM, RAM
and DROM* tests.
TRX
1050***-XX.XX 1050###-XX.XX FF FF
ROM
RAM
= OK
= OK
DROM = OK
* = Continuous test
only
KEY-0 1050730-XX.XX F
ROM
RAM
= OK
= OK
PRESS [MENU] KEY TO EXIT
XX.XX: Program Version No.
*** : 742 (CSH-5L 55 kHz, 68
kHz)
Control unit's program
version no. and results
of ROM and RAM tests.
0 = Version No. of Board
735 (CSH-8L 85 kHz)
736 (CSH-8L 107 kHz)
### : 733 (CSH-5L 55 kHz)
734 (CSH-5L 68 kHz9
735 (CSH-8L 85 kHz)
736 (CSH-8L 107 kHz)
: DIP SW setting
F
Continuous test (example: CSH-5L, 55 kHz transducer)
8-8
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8. MAINTENANCE, TROUBLESHOOTING
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 co-
ordinates 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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X=0
Y=0
0
0
0
0
0
Trackball position in
X-Y coordinate
PRESS [MENU] KEY TO EXIT
Panel test
8-9
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8. MAINTENANCE, TROUBLESHOOTING
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, red, green and blue.
WHITE
RED
GREEN
BLUE
Color test
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.
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
PORT1
PORT2
= OK
= NG
= NG
PORT 1/2: FACTORY USE ONLY
PRESS [MENU] KEY TO EXIT
SIO test
8-10
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8. MAINTENANCE, TROUBLESHOOTING
Echo tests
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
DISPLAY ECHO TEST
conducted with the COMBI-2 mode
active, artificial echoes are shown in
the echosounder display to test the
ES interface.
PRESS [MENU] KEY TO EXIT
Echo-2 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.
TRX ECHO TEST
Note: For the CSH-8L, on the
[SONAR] menu, set [NOISE LIMITER]
to [0] and [HOR BEAMWIDTH] to
[WIDE] before conducting this test.
PRESS [MENU] KEY TO EXIT
Echo-3 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-8L. When the MENU key is
pressed, the equipment goes into
start up condition.
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
The echo-4 test checks the BMF
Board in the transceiver unit for
proper operation. This test is not
available with the CSH-8L. When the
MENU key is pressed, the equipment
goes into start up condition.
Echo-4
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
Echo tests
8-11
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8. MAINTENANCE, TROUBLESHOOTING
This page is intentionally left blank.
8-12
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APPENDIX 1 MENU TREE
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
MENU key
DISPLAY MODE (COMBI-1, NORM, COMBI-2)
TX OUTPUT (0-10, 8)
(SONAR
selected from
MENU MODE)
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)
Sounder menu
MENU key
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)
(SOUNDER
selected from
MENU MODE)
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))
AP-1
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APPENDIX 1 MENU TREE
Marks menu
MENU key
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)
(MARKS
selected from
MENU MODE)
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)
System menu
MENU key
DIMMER (0-10, 10)
DISP SELECT (TEMP, CURRENT)
HEADING ADJ (0-359°, 0°)
AUTO RETRACT (OFF, 5-16 kt)
SPEED MESSAGE (ON, OFF)
EXT KP SYNC (OFF, ON)
(SYSTEM
selected from
MENU MODE)
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)
TEST (SINGLE, CONTI, PANEL, COLOR, PATTERN, SIO, ECHO-1,
ECHO-2, ECHO-3*, ECHO-4*)
SET TO DEFAULT :EXECUTE
* = CSH-5L only
AP-2
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SPECIFICATIONS OF COLOR SCANNING SONAR
CSH-5L/8L
1
PROCESSOR UNIT
1.1 Display mode
Single scan,
Echo sounder combination (single scan and echo sounder),
Audio combination (single scan and audio pictures)
Scan/echo: 16 colors, mark: 1 color
1.2 Colors
1.3 Mark
Own ship’s track, Heading line, Direction/distance, Fish school,
Event, Target lock
1.4 Alphanumeric data
Sonar picture
Range, tilt angle, gain
Trackball mark
Event mark
Slant range, horizontal range, depth, bearing
Horizontal range, depth, first event marked depth, bearing
Bearing, range
Bearing/range mark
Own ship’s position
Navigation data
Current data
Latitude/longitude, LOP
Ship’s speed, bearing, depth, water temperature
Current speed and direction
1.5 Unit
Meter, feet, fathom, P/B
1.6 Features
Interference rejecter, Afterglow, Noise limiter, Numeric indication
Automatic tilt scanning, over-voltage warning,
Unretracted transducer warning
2
TRANSCEIVER UNIT
2.1 Transmitter
2.2 Receiver
2.3 Feature
High power MOS FET amplifier with 11-step power reduction switch
Low noise superheterodyne, Continuously scanning beam forming
TVG, AGC
2.4 TX frequency
2.5 Range
CSH-5L: 55 kHz or 68 kHz, CSH-8L: 85 kHz or 107 kHz
Range (m)
Basic
Single
Echo Sounder Combination
Range (m)
Offcenter
“OFF”
Offcenter
Offcenter
“OFF”
Offcenter
“ON”
“ON”
80
50
85
65
110
130
195
260
325
390
455
520
585
650
780
1040
1300
1560
2080
50
85
65
110
130
195
260
325
390
455
520
585
650
780
1040
1300
1560
2080
135
160
240
320
400
480
560
640
720
800
960
1280
1600
1920
2560
100
150
200
250
300
350
400
450
500
600
800
1000
1200
1600
100
150
200
250
300
350
400
450
500
600
800
1000
1200
1600
SP - 1
E1319S01E-M
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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.
2.6 Pulse-length
0.5 to 20 ms, interlocked with range (can be changed in 11 steps)
2.7 Pulse repetition rate (PRR)
0.25 to 4.4 s, interlocked with range (can be changed in 11 steps)
External synchronized transmission keying
2.8 Audio search
Method
By external loudspeaker
20°, 40°, 80° and 120° selectable
2 W
Sector
Output
Frequency
800 Hz (CSH-5L), 1 kHz (CSH-8L)
3
HULL UNIT
3.1 XDCR travel
600 or 400 mm, selectable
400 mm: 14 s, 600 mm: 20 s
Remote electric control
3.2 Raising/lowering time
3.3 Driving system
3.4 Allowable ship’s speed 18 knots max. (16 knots during raise/lower operation)
4
INTERFACE
4.1 Input data
NMEA 0183 Ver1.5/2.0/2.2
GGA, RMC, GLL, VHW, VTG, HDG, HDM, HDT, DPT, DBT, DBS,
CUR, VDR, GLC, GTD, MTW, RMA
4.2 Log, E/S, KP
Speed log pulse (contact signal): 200/400 pulse/NM
Sonde, E/S signal: VI-1100A applicable
External KP: Current loop, 0 to 12V
4.3 Output data
4.4 Video signal output
Method
NMEA 0183 Ver1.5/2.0/2.2
TLL
RGB analog, separated synchronization, XGA (VESA)
1024 x 768, 65.0 MHz clock
Resolution
Frequency of vertical/horizontal
60 Hz/ 48.36 kHz
Connector
D-sub15P-female
4.5 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
100/115/200/220/240 VAC: 4.0-2.0A, 1 phase, 50-60 Hz
100/115/200/220/240 VAC: 4.5-2.2A, 1 phase, 50-60 Hz
Required for 24 VDC
CSH-8L
5.2 Inverter
6
ENVIRONMENTAL CONDITION
6.1 Ambient temperature
6.2 Relative humidity
6.3 Degree of protection
0°C to +50°C
95% at 40°C
Processor/ control unit IPX2 (w/o connector panel of processor unit)
SP - 2
E1319S01E-M
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Others
IPX0
6.4 Vibration
IEC 60945 Ed.4
7
COATING COLOR
7.1 Processor unit
7.2 Control unit
7.3 Transceiver/hull unit
2.5GY5/1.5
N3.0
2.5G7/2
SP - 3
E1319S01E-M
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SP - 4
E1319S01E-M
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INDEX
Function keys
Numerics
operating ................................................. 3-8
Fish alarm ................................................. 3-3
FISH key ................................................... 3-4
FISH marks
deleting individual.................................... 3-5
entering ................................................... 3-4
Function keys
2ND AGC .................................................. 2-3
A
AGC .......................................................... 2-2
ALARM ZONE key .................................... 3-3
Audio volume .......................................... 1-17
Auto tilt .................................................... 1-10
Auto train................................................... 3-2
B
Fuse replacement ..................................... 8-4
Beamwidth ................................................ 2-7
Bearing scale ............................................ 7-2
G
Gain
C
Clutter........................................................ 4-4
Color (sonar) ........................................... 1-16
Color curve
echosounder ........................................... 4-2
sonar ....................................................... 1-9
GAIN control (sonar) ................................. 1-9
echosounder ........................................... 4-5
sonar ..................................................... 1-16
Color response (sonar) ........................... 1-16
Continuous test ......................................... 8-8
H
Heading adjustment .................................. 7-3
I
Interference rejector
echosounder mode ................................. 4-4
sonar ....................................................... 2-5
D
K
Default settings ......................................... 7-4
Deleting marks .......................................... 3-7
Depth measurement (echosounder mode) 4-3
Diagnostics
Keying pulse.............................................. 7-4
L
Language .................................................. 7-4
Log pulse................................................... 7-4
color test................................................ 8-10
panel test................................................. 8-9
pattern test ............................................ 8-10
SIO test ................................................. 8-10
DIMMER.................................................... 1-5
Display mode ............................................ 1-6
M
Maintenance
fan replacement ...................................... 8-4
fuse replacement..................................... 8-4
raising transducer manually .................... 8-3
Marks
deleting collectively ................................. 3-7
MARKS menu ........................................... 7-1
MENU tree ..............................................AP-1
E
Echo averaging ......................................... 2-7
Echo tests ............................................... 8-11
EVENT key................................................ 3-6
Event marks
deleting.................................................... 3-7
entering ................................................... 3-7
N
Noise limiter .............................................. 2-5
O
OFF CENTER key..................................... 3-5
Own ship position mark
deleting.................................................... 3-7
F
Fan replacement ....................................... 8-4
IN-1
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P
Pattern test...............................................8-10
Picture advance speed
Ports format ...............................................7-4
POWER switch ..........................................1-3
Pulse length ...............................................2-3
R
R/B key ......................................................3-2
Range
echosounder ............................................4-1
sonar ........................................................1-8
RANGE control ..........................................1-8
Remote controller.......................................1-2
S
Single test ..................................................8-8
SONAR menu ..........................................1-14
System configuration ..................................viii
SYSTEM menu ..........................................7-3
T
Target lock .................................................3-1
TARGET LOCK key ...................................3-1
Tilt angle
automatic................................................1-10
surface fish.............................................1-12
Tilt speed ...................................................7-4
Track
deleting.....................................................3-7
length .......................................................7-2
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
U
W
IN-2
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