To enjoy safe operation, read and fully understand the
contents of this Operating Manual before attempting
to operate the equipment.
Store this Operating Manual in a safe and convenient
place where it can be referred to easily when needed.
INTRODUCTION
Thank you very much for purchasing our product, HE-770.
■ Please be sure to read this operating manual carefully and understand the
contents before the actual operation in order to keep your safety.
■ Please store this manual safely at the convenient place so that you can read it
when needed.
■ Please pass this manual to new owner when you resell or give this unit to
someone else.
■ We are not responsible for any physical injuries and property damages under
product liability (PL) law by wrong usage or any other operations not described in
this manual.
DEFINITION OF SYMBOL MARK [CAUTION FOR SAFETY]
： Incur the accident resulting in the death or serious wound
unless you keep the descriptions.
： Be in danger of incurring the accident resulting in the
death or serious wound unless you keep the descriptions.
： Be in danger or incurring the slight wound to human or
damage to other physical property unless you keep the
descriptions.
： Prohibited
： Obligation
・Do not reproduce a part or all of contents described in this manual without our
approval.
・Please understand that the unit may differ from the contents described in this
manual due to the specifications change etc.
・Please inform us if you see any errors and/or unclear descriptions in this manual.
TABLE OF CONTENTS
1. CAUTION ON SAFETY (BE SURE TO READ THIS)····························· 1
1-1. CAUTION ON SAFETY··································································· 1
1-2. HANDLING OF CABLE ··································································· 2
1-3. HANDLING OF TRANSDUCER AND WATER TEMP SENSOR ···· 3
1-4. TFT LCD PANEL ············································································· 3
1-5. CAUTION OF OPERATION ···························································· 4
2. FEATURE ································································································ 5
3. SPECIFICATIONS··················································································· 6
4. STANDARD CONFIGURATION······························································ 7
5. DIMENSION ···························································································· 8
6. INSTALLATION OF UNIT ······································································· 9
7. BUILT-IN INSTALLATION·····································································10
8. CONNECTION WITH UNIT···································································12
9. INSTALLATION OF TRANSDUCER·····················································13
9-1. INSIDE-HULL ················································································14
9-2. THRU-HULL ··················································································14
9-3. INSIDE CASE················································································15
10. CONNECTING DIAGRAM ··································································16
11. DESCRIPTION OF KEYS ···································································17
11-1. FRONT PANEL············································································17
12. DISPLAY INFORMATION ···································································18
13. OPERATION························································································19
13-1. POWER KEY···············································································19
13-2. BRIGHTNESS KEY·····································································19
13-3. CLUTTER ····················································································20
13-4. SHIFT KEY ··················································································21
13-5. GAIN KEY····················································································22
13-6. RANGE KEY ···············································································23
13-7. MODE KEY··················································································24
13-8. USER KEY ··················································································25
13-9. AUTO KEY···················································································26
13-10. MENU KEY················································································26
14. MENU LIST AND EACH MEANING ···················································27
15. MENU ··································································································29
16. FUNCTIONS IN MENU ·······································································30
16-1. MENU 1 ·······················································································30
Sweep Speed ··············································································30
Display Image ·············································································30
Scale Line ···················································································31
Water Temp Graph······································································31
Color Configuration ·····································································31
Background Color ·······································································31
16-2. MENU 2 ·······················································································32
Expansion Ratio ··········································································32
A-Mode························································································32
Split Screen ·················································································32
Water Temp Alarm·······································································33
Depth Alarm ················································································33
Fish Alarm ···················································································34
Battery Alarm···············································································34
Unit Set ·······················································································34
Temp Unit············································································34
Depth Unit ···········································································35
Adjust ··························································································35
Keel Offset ··········································································35
Water Temp·········································································35
Voltage ················································································35
Other Set·····················································································36
Auto Range ·········································································36
Clean Echo ·········································································36
Output Power ······································································36
Pulse Length ·······································································37
Auto Key ·············································································38
Readout 1····················································································39
Depth ··················································································39
Super Range·······································································39
Depth Marker ······································································40
Color Bar·············································································40
Readout 2····················································································40
Latitude/Longitude ······························································40
Vessel Speed ······································································40
Bearing················································································40
System Menu ··············································································41
Simulation ···········································································41
Display ················································································41
System Reset······································································42
17. THEORY OF FISHFINDER ·································································43
18. CAUTION OF SAFETY ·······································································45
1. CAUTION ON SAFETY
(BE SURE TO READ THIS)
This section explains the important cautions in order to prevent the users and
surrounding people from physical injuries and property damages.
1-1. CAUTION ON SAFETY
● High voltage is used for the unit inside.
No one besides authorized personnel should disassemble or
modify the unit. If not followed, it may result in electronic shock.
※Please be sure to consult with the local dealer for any repairs.
● Install the unit firmly.
If not, it may cause the accidents such as human injuries.
● Do not use the information displayed on the screen for navigation.
It causes the marine accidents and incidents.
※Be sure to use the official marine charts for navigation judgement.
● Do not operate the unit while piloting the vessel.
It causes the marine accidents and incidents.
※Be sure to confirm the surrounding safety before the usage.
● Do not put the power on in the presence of flammable materials.
It causes the fire.
● Do not use the power supply besides the specified one.
It causes the firing and heating.
● Do not disassemble and modify the unit.
It causes the firing, electronic shock, and injury.
● Do not operate the unit with wet hands.
It causes the electronic shock and damage.
● Disconnect the power cable in the case of problem, smoke, and fire.
It causes the firing and electronic shock.
Be sure to contact the shop or customer support.
1
● Do not install the unit where rain or spray dashes hit directly.
It causes the firing and electronic shock.
● Do not install the unit at heated places.
It causes the firing from the increase of internal temperature,
injury, and electronic shock.
● Away from direct sun light.
It causes the difficulty of future vision and heat problem.
1-2. HANDLING OF CABLE
● Be sure to use the specified power supply cable.
It causes firing and heating.
● Do not leave the power plug after its removal.
It causes firing and heating if the plug gets wet.
● Be sure to wire the cables in order for safety pilot.
The improper wiring causes the accident.
※Do not put the heavy object on cables or bend cables excessively.
● Do not disassemble or modify the cables.
It causes to firing, heating, or electronic shock.
● Do not use damaged cables.
It causes firing or electronic shock.
● Do not pull out the cable when disconnecting the plug.
The cable damage causes firing and electronic shock.
※Be sure to hold and pull the plug itself for the removal.
● Do not put any pressures on cables when installing the unit.
It causes line cut and shortage.
2
1-3. HANDLING OF TRANSDUCER AND WATER TEMP SENSOR
● Any works on the boat are very unstable and risky.
Installation/maintenance of transducer and water temp sensor should
be handled after landing the vessel on ground or fixing the vessel at
shipyard etc.
● Be sure to ventilate well inside the vessel when installing the
transducer at the bottom of vessel.
Volatile gas from solvent etc causes the toxic symptoms.
● Water proof treatment is required for Thru-Hull installation.
If not, it causes the marine accident.
※It is not allowed for aluminum vessels due to the risk of corrosion.
● Do not operate the electronic tools with wet hands.
It causes electronic shock.
● Do not remove the transducer plug when the power is ON.
It causes electronic shock.
● Only use with selected transducers and water temp sensors.
The use of wrong parts may cause the damage on the unit.
1-4. TFT LCD PANEL
● TFT LCD panel is made with high precision technology. Therefore, the
effective pixel is over 99％, and pixel loss and continuous lighting pixel exist
0.01％ or more. Please understand the specifications.
3
1-5. CAUTION OF OPERATION
Power OFF when Starting Engine
Battery voltage varies when the engine starts. It may cause some damage onto
the unit. Set the power OFF when starting the engine.
* Battery may go flat by operating the unit with engine off condition.
Power Supply 11-35V
Operate the unit within the range of DC 11V~35V.
Organic Solution is Prohibited
Do not clean the unit with organic solution like thinner or alcohol etc because
most parts are made with plastic. For heavy dirt, soak the soft cloth in
synthetic detergent and clean it after wring.
Take Note of Important Data
The unit is not designed for storing the data permanently. Important data
should be recorded on the notebook etc.
4
2. FEATURE
★Dual frequency (50kHz/200kHz) is supported.
★Crystal clear precision 7 inch wide LCD (LED backlight)
★Low power consumption
★Automatic gain/depth control function
★Multiple installations supported
Display mode can be changed (vertical/horizontal) for different installations.
★Easy panel operation
Each key is assigned for best location to support user friendly operation.
5
3. SPECIFICATIONS
Display
7 inch Wide Color LCD
Number of Pixel
480×234
Operating Voltage
DC11V～35V
Display
Power Consumption
8.4W
Dimension
230（H）×236（W）×108（D）mm
Weight
Approx. 1.4Kg
Frequency
50, 200kHz
Output Power
600W
Depth Range
3~1000m
Auto Range
OFF/Range/Shift
Auto Gain
OFF/ON
A –mode Display
OFF/ON
Fish Alarm
OFF /
/
OFF/Within Range/Out of Range
Temp Alarm
Depth Alarm
OFF/Within Range/Out of Range
Expansion Mode
Bottom Lock/Auto Exp/Manual Exp
Expansion Ratio
x2, x4, x8
Function
Sweep Speed
6 Steps + Freeze
Background Color
4 Colors (Black, Blue, White, Dark Blue)
Color Configuration
6 Patterns
Depth Unit
Meter/Feet/Fathoms/Brazas
Super Range
OFF/ON
Pulse Width
Short/Medium/Long
Clean Echo
OFF/Weak/Strong
Transmitting Output
High/Low
Depth Display
OFF/Small/Large
Simulation Mode
OFF/ON
Voltage Display
○
Water Temp Display
○
Temp Sensor
Option
Backlight
LED 5 steps
Specifications and appearance are subject to change without further notice.
6
4. STANDARD CONFIGURATION
Display Unit
Power Supply Cable
(DC06) 2P 2m
Bracket 1pc
Clamping Knob 2pcs
Washer 2pcs
Rubber Ring 2pcs
Display Unit Fixation Screw
5×20 SUS x4pcs
Screw for Built-in Fixation
Disk Plate
4×30 SUS x4pcs
×2
Transducer
TD28 or TD26 (3P 8m)
50/200kHz
Paper Temperate for Built-in Fixation
Operating Manual
7
5. DIMENSION
<Display Unit>
Unit : mm
<Bracket Holes>
8
6. INSTALLATION OF UNIT
● Install the unit firmly.
If not, it may cause the human injuries.
Install the unit correctly according to the following instruction.
For overhead mounting, install the unit to safe location with the
consideration of dropping incident.
● Install the unit to the location with less vibration.
[Procedure of Installation]
<Installation of Unit>
Fix the unit with enclosed screws by using bracket holes(4 locations).
Refer to the picture below.
1．<Positioning>
Set the unit with mounting bracket and fixation spot. Put the mark.
Leave some room in the backside of unit for cable connections.
2．<Installation of Bracket>
Fix it with enclosed screws by using 4 holes on the bracket.
The cutting slits for both edges of bracket’s face to front side.
3．<Installation of Unit>
Refer to the picture below and fix the unit.
Put the disk plate for unused
hole for knob.
Display Unit
Rubber Ring
Washer
Tapping Screw
5×20 SUS
Clamping Knob
9
7. BUILT-IN INSTALLATION
● Install the unit firmly.
If not, it may cause the human injuries.
Install the unit correctly according to the following instruction.
[Procedure of Built-in Installation]
Fix the unit by using 4 holes on the front panel.
Cover for built-in installation
(4 locations)
Create the space by using the enclosed paper temperate for built-in installation.
188
108.5
Built- in size
188
M4 scr ews locations
108.5
1.
66
37
※This drawing faces from the front panel.
10
Unit : mm
2. Remove the covers (4pcs) on
the front panel.
3. Pull the cover toward front side for
the removal.
4. Locate the unit to the space.
(Space)
5. Fix it with M4×30 tapping screws.
(4pcs）
6. Put the covers back to the unit.
(4pcs)
11
8. CONNECTION WITH UNIT
Temp Sensor
(Option)
NMEA Input/Output
Transducer
(TD28 or TD26)
Black （－）
White （＋）
Battery
11~35Ｖ DC
12
9. INSTALLATION OF TRANSDUCER
● Any works on the boat are very unstable and risky.
Installation/maintenance of transducer and water temp sensor should
be handled after landing the vessel on ground or fixing the vessel at
shipyard etc.
● Be sure to ventilate well inside the vessel when installing the
transducer at the bottom of vessel.
Volatile gas from solvent etc causes the toxic symptoms.
● Water proof treatment is required for Thru-Hull installation.
If not, it causes the marine accident.
● Do not operate the electronic tools with wet hands.
It causes electronic shock.
[Installation Methods]
The following installations can be applied. Please refer to the each instruction.
1. Inside-Hull
2. Thru-Hull
3. Inside Case
These methods prohibit the use of aluminum vessels for the risk of corrosion.
Be careful about the following points when using the method 1 and 3.
No protruding object in front of
transducer such as screw out
deck plate and drain.
Transducer
Do not install the transducer at
the tilted locations more than 15 °.
Do not install the transducer at the locations
having obstruction like keel etc.
2/3 from the bow.
13
9-1. INSIDE-HULL
Effective for FRP vessels with single hull layer of 10mm or less.
Look for the best picture location before the fixation by putting adequate water on
the transducer surface and vessel bottom followed by pressing the transducer onto
the vessel bottom.
（1）Polish the adhesive surface (transducer bottom surface and vessel bottom) well
with sandpaper(#240 or around) and alcohol in order to remove oil, water, and
dirt on the surface.
（2）Put silicon bond on the adhesive surface (transducer bottom surface and vessel
bottom) and press firmly for the bonding so that no air bubble is contained inside.
Vessel
bottom
Bond
Transom
Single layer（10mm or less）vessel bottom
9-2. THRU-HULL
（1）Make a hole of approx. φ23 at the vessel bottom. (Alminum vessels are not
subject to the installation for the risk of corrosion.)
（2）Insert the screw part of transducer into the hole and fix it with 1pc cork washer,
1pc washer, and 1pc nut. (Extra cork washer is for spare.)
Execute the water proof care for the junction part.
For tilted hull, use a block etc to face directly to the vessel bottom.
Washer
Nut
Cork
Hull
Washer
Block
Nut
Cork
Put the seal at joint
point for waterproof.
Hull
Put the seal at joint point for waterproof.
Keep the inclination of transducer surface
below 10°or less.
14
9-3. INSIDE CASE
Effective for FRP vessels with single hull layer of 10mm or less.
Look for the best picture location before the fixation by putting the transducer
inside the case.
（1）Take out all the water inside the case.
（2）When installing the transducer at the bottom of case, please refer to “9-1
INSIDE-HULL”.
Fish tank
Single layer（10mm or less）
15
10. CONNECTING DIAGRAM
Connector for Input/Output
Used for NMEA input/output.
Data Format
Transfer
Rate
Transfer Format
NMEA0183
(GGA, VTG)
4800 bps
Start bit＝1, Data bit=8
Parity bit =none, Stop bit=1
NMEA
Unit
NMEA Input/Output
Data output
External power
Input/Output
Connector
16
11. DESCRIPTION OF CONTROL KEYS
11-1. FRONT PANEL
①Power ON key (→page 19)
Set the power ON.
②Power OFF key (→page 19)
Set the power OFF.
③Brightness key (→page 19)
Adjust the backlight brightness.
④Zoom key (→page 24)
Change the display mode.
Display changes every time pressing this key.
Exp OFF → B/L → Auto Exp → Manual Exp
⑤User key (→page 25)
Customized key assignment by user.
⑥Direction key (→page 29)
Move the depth marker with ［ , ］ key.
Select the item when menu is activated.
⑦Auto key (→page 26)
Set the sensitivity and depth automatically.
Press this key to activate/deactivate Auto mode
(gain/range).
⑧Menu key (→page 26)
Display menu.
⑨Clutter key (→page 20)
Adjust the clutter.
⑩Shift key (→page 21)
Shift the display.
⑪⑫Gain key (→page 22)
Adjust the sensitivity.
⑬Range key (→page 23)
Change the depth range.
17
12. DISPLAY INFORMATION
Dual frequency mode ※1
Frequency display for the
Frequency display for the left side
right side
30sec bar appears
every minute.
When using the specific mode, the
selected mode (B/L, Auto Exp, or
Man Exp)
Time marker
Gain bar
Sweep speed
Depth marker
Auto mode display
Fish school
Shown only under
auto mode.
50kHz mode
Color bar
Sea bottom
200kHz mode
※2
Depth
Latitude
Longitude
Speed
Direction
nd
2 echo
Depth
Depth unit
Voltage
Water temp display
(Optional water temp
sensor is required.)
※1 Frequency display
Display appears differently for single and dual frequency.
※2 Display Lattitude/Longitude/Speed/Direction when connecting to NMEA
(GGA,VTG) device. (Activate NMEA display ON in menu 2.)
18
13. OPERATION
13-1. POWER KEY
Power ON/OFF
Set the power ON/OFF of unit.
1 Press&Hold [ON] key for 1sec or more to set
the power ON after alarm sound. The display
appears on the screen.
Press [OFF] key to set the power OFF after
alarm sound.
ON key
OFF key
※[OFF] key is disabled during the star-up until the
display appears on the screen.
Caution1） Set the power OFF when starting the engine because the battery
voltage varies causing the problems into unit.
13-2. BRIGHTNESS KEY
Brightness Adjustment
Adjust the brightness.
1 Press
Press
Brightness key
19
[BRIGHT] key for brighter.
[BRIGHT] key for darker.
13-3. CLUTTER KEY
Clutter
[Clutter]
Fish school or sea bottom is shown by the strength of reflected echo and color
configuration.
“Clutter” removes the color from the weak echo so that plankton or water
contamination are reduced for easier detection of fish school etc.
Press clutter key to adjust the color.
The color bar on the left side changes.
Press&Hold
Clutter key
[CLUTTER] key to remove
1 the color of weak reflection.
Press&Hold
[CLUTTER] key to display
the color of strong reflection.
Color bar
20
13-4. SHIFT KEY
Shift (Display Range Shift)
Possible to shift the display range of depth. For example, execute 10m shift to
0~8m display range. The changed range will be 10~18m.
Also, you can expand small target with this feature.
10m shift
Press shift key to move the display range.
Depth display is changed.
Shift key
1 [Shift to shallow direction]
Press
[SHIFT] key toward shallow direction.
[Shift to deep direction]
Press
[SHIFT] key toward deep direction.
※Shift key is disabled when selecting
automatic range.
21
13-5. GAIN KEY
[Sensitivity]
Adjust the sensitivity in order to detect the sea bottom and fish school.
(Numeric and bar display of 32 steps from 0~31)
The optimized sensitivity is where 2nd reflected echo appears some on the screen.
[2nd echo]
1st echo is the primary reflected echo from the sea bottom. 2nd echo is that
reflected 1st echo on the water surface returning to the sea bottom followed by
reflecting back to the water surface once again. Normally, 2nd echo is located
around twice deeper than 1st echo.
<Too poor sensitivity>
<Good>
<Too much sensitivity>
Sea bottom
nd
2 echo
As image is pale, it is
As 2nd reflection is
difficult to distinct the fish shown, it is easy to
school.
distinct the fish school.
Gain Adjustment
Gain 1
As plankton and stain
are shown, it is difficult
to distinct the fish.
Press gain key to adjust the sensitivity.
sensitivity]
1 [Higher
Press
[GAIN-1] or [GAIN-2] key for high
sensitivity and longer bar.
(Numeric value beside gain bar goes up.)
Gain 2
Left display
Sensitivity bar
Right display
Sensitivity bar
[Lower sensitivity]
Press
[GAIN-1] or [GAIN-2] key for low
sensitivity and shorter bar.
(Numeric value beside gain bar goes down.)
Use [GAIN-1] key to change the sensitivity
of upper&right display of dual frequency.
Use [GAIN-2] key to change the sensitivity
of lower&left display.
22
13-6. RANGE KEY
[Depth (Display Range)]
Set-up the depth (display range) from the water surface.
Select from 23 steps: Min 0~3m to Max 0~1000m.
Depth Range (Display Range)
0
3
5
8
10
15
20
30
40
50
60
80
100
125
150
180
200
250
300
400
500
600
800
1000m
Press range key to change the depth.
The display range of depth changes.
1 [Shallow range]
Press
[RANGE] key for shallow range.
Depth key
[Deep range]
Press
[RANGE] key for deep range.
23
13-7. ZOOM KEY
There are 3 different zoom selections: bottom lock expansion, automatic
expansion, and manual expansion.
Expansion range mark appears when selecting auto and manual expansion.
1 Press
key to change the mode.
Current selection is shown on the top left of
screen.
Normal picture appears when zoom mode is
OFF.
Zoom mode key
(Bottom Lock)
Bottom contour is indicated as a straight line.
(Auto. Expansion)
The bottom is expanded and shown.
(Expansion range marker cannot be moved.)
(Manual Expansion)
Selected area is expanded and shown.
Move the direction key [ , ] to select the
target area.
Expansion range marker
24
13-8. USER KEY
Possible to assign the selected function to user key.
By doing so, there is no need to go into the set-up from menu display. All you
need is to press user key for faster, easy, convenient function.
1 Press
key (user).
Set-up display appears.
2 Set-up is changed in order every time
User key
pressing
key.
Direction key [ , ] can be used to change
the set-up as well.
Set-up display disappears after pressing
key (user) or direction key [ ,
] for
2sec or more.
Also, you can clear the set-up display by
pressing any keys other than
<MENU 1>
1 SWEEP [FRZ,1,2,3,4,×2,×3]
[50+200]
2 PICTURE
3 SCALE LINE [OFF,ON]
4 TEMP GRAPH [OFF,2°,10°]
[1,2,3,4,5,6]
5 COLOR
[
]
6 BACK GRD
[MENU]:TO MENU 2
Underline
key
(user).
※Default set-up is set to “sweep speed”.
※Allocation method of user key
Look for underlined items in menu display.
These functions can be assigned for user
key.
1 Select the function from menu.
2 Press&Hold key (user) for 2sec or more.
3 The underline of selected function gets
thicker after beep sound.
25
13-9. AUTO KEY
Press auto key to set automatic function ON/OFF.
Go to Menu 2 Auto Key Setting for auto key set-up. (→page 38)
1 Press
key (auto) to display AUTO on
the top left of screen.
Auto key
Press
key (auto) again to go back to
normal operation.
13-10. MENU KEY
Use
key, direction key [ ,
,
,
],
key, and
key to select the
function from menu display.
The detailed set-up can be selected from menu key.
Menu key
1 Press
key to display Menu 1 and 2.
Direction key [ , ] to select.
Direction key [ , ] to change the set-up.
Press
or
key to end the set-up
display.
Direction key
※Refer to page29 for Menu in details.
26
14. MENU LIST AND EACH MEANING
MENU 1
1.SWEEP
2.PICTURE
3.SCALE LINE
4.TEMP GRAPH
5.COLOR
6.BACK GRD
MEANING
Set the sounding rate per one sweep.
FRZ 1 2 3 4 x2 x3
Set the frequency of display on screen.
50
200 200+50
50+200
Indicate the line on the depth graduation.
OFF ON
Display water temp graph. (Water temp sensor is optional.)
OFF 2° 10°
Select the color configuration of reflected strength. (except background color)
1 2 3 4 5 6
Select the background color of display.
Black Blue White Dark blue
MENU 2
MEANING
1.EXP RATE
Set the expansion rate at expansion mode.
×2 ×4 ×8
2.A-MODE
Display the strength of reflected signal.
OFF ON
3.SPLIT SCREEN Split the screen left/right or up/down.
L/R U/D
4.ALARM
1.TEMP ALARM 1.ALARM SET
Alarm is ON within or exceeding the range of 2
temperature. OFF IN RANGE, OUT RANGE
2.TEMP SET 1
Set the temperature 1.
0～40℃（default: 15℃）
3.TEMP SET 2
Set the temperature 2.
0～40℃（default: 20℃）
2.DEPTH
1.ALARM SET
Alarm is ON within or exceeding the range of 2
depth. OFF IN RANGE, OUT RANGE
ALARM
2.DEPTH SET 1
Set the depth 1.
1~500m（default: 10m）
3.DEPTH SET 2
Set the depth 2.
1~500m（default: 100m）
3.FISH ALARM Alarm is ON when fish is detected.
OFF
4.BATT ALARM
5.OTHERS
1.UNIT SET
2.ADJUST
3.OTHER SET
Alarm is ON when battery voltage drops.
OFF 12V(10V or less) 24V(21V or less)
1.TEMP UNIT
Select the unit of water temp.
℃ ˚F
2.SCALE UNIT
Select the unit of depth.
m ft Fa br
1.KEEL OFFSET
Keel offset can be applied to indicate the depth
from the water surface.
0.0~5.0m (default: 0.0m)
2.TEMP ADJ
Select temp offset.
-5.0~+5.0℃ (default: 0.0℃)
3.VOLT ADJ
Select voltage offset.
-2.0~+2.0V (default: 0.0V)
1.AUTO R MAX
Select the search range when executing the
DEP.
auto range function.
30m 50m 100m 200m 300m 500m
2.CLEAN ECHO
Display fine image with less noise.
OFF
L
H
3.OUTPUT POWER Change the transmitting power.
LOW HIGH
※
27
: default set-up
MENU 2
MEANING
4.PULSE LENGTH
5.AUTO KEY SET
4.READOUT 1
5.READOUT 2
6. SYSTEM
MENU
Select the pulse width.
S
M
L
Enable/Disable following automatic functions.
1.AUTO G: Adjust the sensitivity
automatically.
OFF ON
2.AUTO R: Adjust the depth automatically.
OFF RNG SFT
1.DEPTH DIG
Select the depth digit size.
OFF S L
2.SUPER RANGE Whole picture synchronizes to the changed
depth. OFF ON
3.DEPTH MARKER Select the color of depth marker.
OFF W R G B Y LB P
4.COLOR BAR
Set the indication of color bar.
OFF ON
1.LAT/LON
※Activated only when connecting to NMEA
output device. Select the display of
latitude/longitude. OFF ON
2.BOAT SPEED
Set the indication of boat speed.
OFF ON
3.BEARING
Set the bearing.
OFF ON
1.SIMULATION
Activate the simulation.
OFF ON
2.DISPLAY
Set the display direction.
LANDSCAPE PORTRAIT L REV. P REV.
3.SYSTEM RESET Reset the set-up to the factory set-up.
※
28
: default set-up
15. MENU
Operation
Menu
Direction key
1 To display Menu mode
key to display Menu 1.
Press
2 To change the contents of Menu
Use direction key [ ,
,
,
] to select and
change each item.
Selected items are shown in yellow frame.
[ ,
] to change the item
[[ ,
・
to move up.
・
to move down.
・
to move right or enlarge the value.
・
to move left or lower the value.
] to change the set-up
<MENU 1>
1 SWEEP [FRZ,1,2,3,4,×2,×3]
[50+200]
2 PICTURE
3 SCALE LINE [OFF,ON]
4 TEMP GRAPH [OFF,2°,10°]
[1,2,3,4,5,6]
5 COLOR
[
]
6 BACK GRD
[MENU]:TO MENU 2
3 To go to next MENU
・When Menu 1 is opened, press
key to
show Menu 2.
・When Menu 2 is opened, press
key to
clear the menu display.
key to Menu 2
[ ] or
key to see the set-up
<MENU 2>
1 EXP RATE [×2,×4,×8]
2 A-MODE [OFF,ON]
3 SPLIT SCREEN [L/R,U/D]
4 ALARM
5 OTHERS
4 To cancel MENU mode
・Set-up menu appears for the items having
mark on the right by pressing
or
key.
・Press
key to return to the previous
menu display.
[MENU]:TO FINISH MENU
※Operation may vary depending on the menu item.
※Selected items are activated even after the power is set to OFF.
29
16. FUNCTIONS IN MENU
16-1. MENU 1
Sweep Speed
[Sweeping Speed]
For fishfinder display, the latest image (image beneath the vessel) is located at
the right edge of display. At the same time, the previous image keeps moving
to the left.
Sweep speed is the speed shifting the image. The image appears differently by
this set-up value.
[Relationship between sounding rate and sweep speed]
7 sweeping speeds can be selected. The following figure shows the ratio of
sweeping speed for sounding frequency. (Number of sounding rate to move
the image one time.)
Sweep／Sounding
Fast
1 Select [1. SWEEP] in Menu 1.
2 Set the sweeping speed.
(7 steps: FRZ, 1, 2, 3, 4, x2, x3)
Slow
Freeze
Display Image
Select the frequency shown on the display (single or dual frequency).
1 Select [2. PICTURE] in Menu 1.
2 Select the frequency.
50
：50kHz only
200
：200kHz only
50＋200 ：50kHz on left
200kHz on right
200＋50 ：200kHz on left
50kHz on right
Case of <200+50kHz>
30
Scale Line
Horizontal lines appear at the depth scale.
1 Select [3. SCALE LINE] in Menu 1.
2 ON :
Set the scale line.
Enable
OFF : Disable
Water Temp Graph
Water temp graph appears. It’s easy to see the fishing points by knowing the
variation of water temperature and tide change.
1 Select [4. TEMP GRAPH] in Menu 1.
2 Set the water temp graph.
OFF
2°
10°
: No graph
: Display the temp of 2℃ range.
: Display the temp of 10℃ range.
※Optional water temp sensor is required to show temp graph.
Color Configuration
Reflected signal of sound wave is converted into 17 ranks of digital signals
according to the strength of response. Color configuration is the color set-up for
16 ranks except background color.
Fishfinder image is shown by the color configuration. The displayed color shows
the strength of reaction. Also, the whole image may vary with this set-up.
1 Select [5. COLOR] in Menu 1.
2 Select the color configuration. (6 levels:1~6)
Background Color
Visual image of display looks differently by surrounding brightness. It is easier
to see the image by selecting the background color from 4 different colors.
1 Select [6. BACK GRD] in Menu 1.
2 Select the background color.
(black, blue, white, or dark blue)
31
16-2. MENU 2
Expansion Ratio
The expansion ratio can be selected from x2, x4, or x8.
1 Select [1. EXP RATE] in Menu 2.
2 Select the ratio.
×2, ×4, ×8
A-Mode
A-mode is shown at the right edge. The signal width varies depending on the
strength of reflected signal.
1 Select [2. A-MODE] in Menu 2.
2 Select A-mode.
ON : Display A-mode.
OFF ： No A-mode
A-mode display
Split Screen
Possible to split the display Left/Right or Up/Down when selecting dual
frequency or Expansion function.
1 Select [3. SPLIT SCREEN] in Menu 2.
2 Divide the display.
L/R: Left/Right.
U/D： Up/Down.
32
Water Temp Alarm
[Water Temp Alarm]
Alarm is ON within or exceeding the range of 2 different temperature.
1 Select [4. ALARM] → [1.TEMP ALARM] in
Menu 2.
2 Set the alarm condition.
3
IN RANGE：Alarm is ON within the range of 2
selected temperature. Temp display
blinks.
OUT RANGE：Alarm is ON outside the range
of 2 selected temperature. Temp
display blinks.
OFF ：Temp alarm is OFF.
※Press
key to stop alarm. However, blinking of temp display does not
stop. Also, alarm is ON once the temperature goes outside of the condition
and return to the alarming condition again.
Depth Alarm
[Depth Alarm]
Alarm is ON within or exceeding the range of 2 depth.
Example)
Depth 10m
1 Select [4. ALARM] → [2.DEPTH ALARM] in
Menu 2.
Within Range
Alarm
Depth 15m
Outside of range
Alarm
Depth 10m
(Depth Set1)
Depth 15m
(Depth Set2)
Outside of range
2 Set the alarm condition.
IN RANGE：Alarm is ON within the range of 2
selected depth. Depth display blinks.
OUT RANGE：Alarm is ON outside the range
of 2 selected depth. Depth display
blinks.
3 OFF ：Depth alarm is OFF.
Alarm
※Press
key to stop alarm. However, blinking of depth display does not
stop. Also, alarm is ON once the temperature goes outside of the condition
and return to the alarming condition again.
33
Fish Alarm
Alarm is ON when the fish is detected.
Fish school
1 Select [4. ALARM] → [3. FISH ALARM] in
2
Menu 2.
：High sensitivity mode to detect small
fish schools.
：Low sensitivity mode to detect only big
fish schools.
OFF ：Fish alarm is OFF.
※1）It may show the objects other than fish.
※2）Fish alarm is only effective for right or upper display when using dual
frequencies.
Battery Alarm
Alarm is ON when the battery voltage drops.
1 Select [4. ALARM] → [4. BATT ALARM] in
Menu 2.
2 12V ：Alarm is ON when the battery is 10V or
less. Voltage display blinks.
24V ：Alarm is ON when the battery is 21V or
less. Voltage display blinks.
OFF ：Alarm is OFF.
※Press
key to stop alarm. However, blinking of battery display does not
stop. Also, alarm is ON once the voltage goes outside of the condition and
return to the alarming condition again.
Unit Set : Temp Unit
Select “℃” or “F”.
1 Select [5. OTHERS] → [1. UNIT SET] →
[1.TEMP UNIT] in Menu 2.
2 Select [TEMP UNIT], (℃ ・ ˚F)
34
Unit Set : Depth Set
Select the depth unit: m, hr, ft, Fa, or br.
1 Select [5. OTHERS] → [1. UNIT SET] →
[2. SCALE UNIT] in Menu 2.
2 Select the unit.
Adjust : Keel Offset
Keel offset can be applied to indicate the depth from the water surface.
Possible to set the offset in 0.1m steps from the range of 0~+5.0m.
1 Select [5. OTHERS] → [2. ADJUST] → [1.
KEEL OFFSET] in Menu 2.
2 Use [
,
] to change the value.
Adjust : Water Temp
Possible to set the offset in 0.1° steps from the range of -5.0°~+ 5.0° when
connecting to water temp sensor.
Set the coefficient value so that water temp display is same as the actual
temp.(※Water temp sensor is optional.)
1 Select [5. OTHERS] → [2. ADJUST] → [2.
TEMP ADJ] in Menu 2.
2 Use [
,
] to change the value.
Adjust: Voltage
Possible to set the offset in 0.1V steps from the range of -2.0V~+2.0V.
Set the coefficient value so that battery voltage is same as the actual voltage.
1 Select [5. OTHERS] → [2. ADJUST] → [3.
VOLT ADJ] in Menu 2.
2 Use [
35
,
] to change the value.
Other Set : Auto Range
Select the search range when executing the auto range function.
Maximum auto range leads to longer detection time. Also, it may show the
wrong depth due to the malfunction. In this case, it’s highly recommended to
set the proper max range for your depth condition.
1 Select [5. OTHERS] → [3. OTHER SET] →
[1. AUTO R MAX DEP.] in Menu 2.
2 Use [
, ] to change the depth.
(30m, 50m, 100m, 200m, 300m, 500m)
※Depth display and Auto range do not work if exceeding the depth of selected
max depth for auto range.
Other Set : Clean Echo
Display fine image with less noise by reducing the desynchronized noise such
as other fishfinder, electronic noise, air bubble, and mechanical noise.
1 Select [5. OTHERS] → [3. OTHER SET] →
[2. CLEAN ECHO] in Menu 2.
2 OFF ：Clean echo is OFF.
L： Low clean echo
H： High clean echo
※It is better to set it to OFF where noise is not present.
Other Set : Output Power
Select from 2 levels of output power. (Low/High)
1 Select [5. OTHERS] → [3.OTHER SET] →
2
[3. OUTPUT POWER] in Menu 2.
LOW： Not for deep water.
Low power consumption
HIGH：Possible to detect deeper.
High power consumption
36
Other Set : Pulse Length
Select the pulse width.
The theory of fishfinder is same as echo in water. Pulse length is the length of
ultrasonic transmitted. Resolution for depth direction is changed by the
selection from 3 types of pulse length (short, medium, long).
1 Select [5. OTHERS] → [3.OTHER SET] →
[4. PULSE LENGTH] in Menu 2.
2 S： Higher resolution and for shallow water.
Low power consumption
M： Medium resolution and for little deep
water.
L： Low resolution and for deep water.
[Long pulse length]
Closed objects looks like one object.
For example of this case
[Short pulse length]
Closed objects can be distinguished.
37
Other Set : Auto Key
Press
key (Auto) to enable/disable (ON/OFF) the preset function.
e.g. 1) When setting to Auto Gain [ON] and Auto Range [Range], press
key (Auto) to activate Auto Gain [ON] and Auto Range [Range].
Press
key (Auto) again to deactivate them.
e.g. 2) When setting to Auto Gain [ON] and Auto Range [OFF], press
to activate only Auto Gain [ON]. Press
key
key (Auto) again to
deactivate Auto Gain.
1. AUTO G
Auto Gain is to set the optimized gain value automatically so that the bottom
reaction stays the same.
1 Select [5. OTHERS] → [3.OTHER SET] →
[5.AUTO KEY SET] → [1.AUTO G] in Menu2.
2 ON
Select the auto gain.
： Automatic gain is ON
OFF ： OFF
2. AUTO R
Auto Range is to set the optimized range automatically so that the bottom
appears in lower half of display. Select the auto range method.
1 Select [5. OTHERS] → [3.OTHER SET] →
[5.AUTO KEY SET] → [2.AUTO R] in Menu2.
FF ： OFF
2 ORNG：
Adjust the depth automatically.
SFT： Shift the display area automatically.
38
Readout 1 : Depth
Possible to change the digit size of depth indication.
1 Select [5. OTHERS] → [4. READOUT 1] →
[1.DEPTH DIG] in Menu 2.
2 OFF ：OFF
S
L
： Small digit indication
： Large digit indication
Readout 1 : Super Range
Whole picture keeps rewriting according to the changed depth (synchronized
to the current displayed range).
1 Select [5. OTHERS] → [4. READOUT 1] →
[2. SUPER RANGE] in Menu 2.
2 ON
： Rewrite the previous image.
OFF ： No synchronization
(No rewrite of the previous image)
Change to
deeper range
OFF
No rewriting of previous image
Change to
deeper range
ON
Rewrite previous image
※ When moving from shallow to deep water range with super range ON, no
information will be displayed for the depth outside of previous selected range.
39
Readout 1 : Depth Marker
1 Select [5. OTHERS] → [4. READOUT 1] →
[3. DEPTH MARKER] in Menu 2.
2 Color： Depth marker color selection.
OFF ： OFF
Readout 1 : Color Bar
1 Select [5. OTHERS] → [4. READOUT 1] →
[4. COLOR BAR] in Menu 2.
ON ： Color bar is ON
OFF ： OFF
Readout 2
Set the display of latitude/longitude, vessel speed, and bearing.
1 Select [5. OTHERS] → [5. READOUT 2] in
Menu 2.
2 1. Latitude/Longitude
Latitude
Longitude
Speed
OFF ： OFF
ON ： Displayed
2. Vessel Speed
OFF ： OFF
ON ： Displayed
3. Bearing
OFF ： OFF
ON ： Displayed
Bearing
This function is only effective when connecting to NMEA（GGA.VTG）
output device.
40
System Menu : Simulation
Simulation mode set-up.
1 Select [5. OTHERS] → [6. SYSTEM MENU] →
[1. SIMULATION] in Menu 2.
2 OFF ： OFF
ON
： Simulation is ON.
DEMO
※ DEMO is shown on the right bottom of screen.
System Menu : Display
Display view can be selected for different installation environment.
1 Select [5. OTHERS] → [6. SYSTEM MENU]
2
Portrait
→ [2. DISPLAY] in Menu 2.
Select from Portrait, Landscape, Portrait
Reverse, or Landscape Reverse]
Landscape
Portrait Rev
41
Landscape Rev
System Menu : System Reset
Execute the system reset in order to set the unit back to factory set-up.
<SYSTEM MENU>
1 SIMULATION [OFF,ON]
2 DISPLAY [LANDSCAPE]
3 SYSTEM RESET
SETTING BY [SET] KEY
CANCEL BY [CLR]
[MENU]:TO PREVIOUS MENU
1 Select [5. OTHERS] → [6.SYSTEM MENU] →
[3. SYSTEM RESET] in Menu 2.
[SET] key to execute.
2 Press
key.
3 Press [SET] key one more time to execute.
key： Return to factory set-up
※Press OFF key to turn down the power and
restart the unit.
Press [CLR] to cancel.
key： Cancel the reset.
42
17. THEORY OF FISHFINDER
1． THEORY OF FISHFINDER
●Theory of fishfinder is same as echo among hills
Ultrasonic wave transmitted from the transducer directly beneath the vessel is
reflected at the sea bottom and received by transducer.
Fishfinder indicates the depth by calculating the round-trip time to distance.
Also, the unit shows the color image of fish school size/density or sea floor condition
according to the strength of reflected wave.
Ultrasonic wave runs at 1500m/sec inside the water. Therefore, the depth to fish
school and sea bottom can be captured by calculating the round-trip time.
Round-trip
time 0.5sec
Round-trip
time 1sec
e.g.) 1sec is round-trip time from sea bottom.
Round-trip distance=1500m/sec×1sec
=1500m
The
depth
is
half
the
size, so
Transducer
Depth=1500m÷2
=750m
Reflection from 0.5sec is round-trip time from fish school
fish school
Round-trip distance=1500m/sec×0.5sec
=750m
The depth is half the size, so
Depth=750m÷2
Reflection from
sea bottom
=375m
●Display Method
Current image is shown at 1st line of right edge after processing the reflected wave of
transmitted ultrasonic. The line image previously located at the right edge moves to
one line to the left. Keep executing this operation to create the cross section view.
Therefore, the latest image beneath the vessel is located at the right edge. More left
side the image moves, more past image the screen shows.
You can assume that fishfinder screen shows the image from the side view. The sea
floor shape can be only captured when sailing the vessel. No matter how the bottom is
shaped, the image shows the flat bottom if the vessel is stopped.
Current image
0
Past image
10
20
30
40
※ There is no relationship between vessel speed and image line speed.
43
2． Distinguish of Fish School
●Important tip is comparison between fish school image and actual catch
Possible to judge the fish type to some extent from the image of fish school. The shape
of fish school changes even for same fish group by time(day/night, season, current
change). The important tip to distinguish the fish type is to know fishing point and fish
type according to fishing season. Then, compare the fish image and actual catch and
look for the point.
3． Distinguish of Fish Quantity
●Distinguish fish quantity from density/size of fish school.
Higher density of fish school has stronger reflected wave. Therefore, the fish density
can be seen from the color strength of image.
It is wrong that fish quantity is larger for large image on the screen. Fish school located
deeper area tends to appear bigger compared to the one at shallow water. This is
because the width of transmitted wave becomes wider as it go deeper. The reflected
ultrasonic wave becomes bigger as the distance (depth) gets further. The important tip
to distinguish the fish quantity is to know fish school located at deeper water appears
bigger. Judge from size of fish school and color strength.
Reflected
ultrasonic
Fish school A
Fish schoolA Image(Shallow)
Fish school B
Fish schoolB Image(Deep)
4． Distinguish of Sea Floor Condition
●There are many types of sea floor conditions such as rocky, sandy, or muddy. The
condition can be judged by the upper/lower width of sea floor image and 2nd echo. The
reflection is stronger for hard bottom such as rocky area. The image width is thicker,
and 2nd echo tends to appear. On the other hand, the reflection is weaker for soft
bottom such as sandy and muddy area. The image width is thinner, and it’s harder to
have 2nd echo.
※ 2nd echo… Ultrasonic wave initially transmitted from transducer, reflected from the
sea bottom, reflected back at water surface, and reflected again at sea bottom. In short,
it is the image (ultrasonic wave) which made 2-times round-trip.
Rocky area
Sandy or Muddy area
nd
2 echo
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18. CAUTION ON SAFETY
●When the unit has any problems, please check the following points before sending
back the unit for repair.
Symptoms
Power cannot be
turned on.
No display on
screen
Bottom or fish
cannot be
displayed at all.
Cause
Voltage of battery is lower
than standard value (11V).
Contact of power connector
is poor.
Wrong connection of power.
Opposite polarity ＋－.
Cut wire inside power cable.
Blown fuse.
Brightness is set to minimum
level.
Contact problem with
transducer connector
Remedy
Recharge the battery.
Retighten it. Remove and
clean the rust/dust. Replace it
in the case of corrosion.
・Replace the power cable
・Replace the connector on the
unit.
Check the polarity and connect
it property.
Exchange to new power cable.
Send it for repair.
Adjust the brightness.
(refer to [Brightness
Adjustment] p.19）
Retighten the connection.
Remove/clean the rust/dust.
Replace it in the case of
corrosion. Send it for repair.
<Problem with Transducer>
Check followings and replace it in the case of actual problems.
1．It’s normal if you hear the sound like “Bo Bo” from the
surface of transducer.
2．It’s normal if rain like dots appear on the transducer surface
after setting the sensitivity and depth to the max and rubbing
the transducer surface.
Transducer is not immersed
Adjust the transducer
enough into the water.
installation so that it is always
beneath water surface.
Internal liquid is not enough
Add enough liquid to immerse
inside the case.
the transducer.
Image does not
appear sometimes.
Transducer is not immersed
enough into the water.
Problem with transducer
installation causes the image
problem due to air bubbles at
speeding the vessel.
Influence from other vessel
causing air bubbles.
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Adjust the transducer
installation so that it is always
beneath water surface.
Check the installation of
transducer.
Move to other location or wait
until air bubble disappears.
Symptoms
Bottom or fish
school is not
displayed well.
Cause
Too low sensitivity.
Remedy
Increase the sensitivity.
Or, set to auto gain (auto
sensitivity control).
Rubbish and weed attached on
the transducer surface.
Dirty bottom or liquid.
Remove the excrescence.
Remove the dirt from bottom
and exchange the liquid.
Water and environmental conditions may cause the problem
with image which is not problem at all.
Too much
sludge
Lots of
weeds
Too high clutter.
Too much noise
Too high sensitivity
Interference with other
vessel’s fishfinder
Noise from engine
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Muddy and
dirty locations
Rapid current
Activate low reflection color.
(refer to [CLUTTER] p.20.）
Lower the sensitivity.
Set to auto gain (auto
sensitivity control)
Noise disappears after other
vessel moves far away.
Change the routing of cables
such as transducer and power
cables. (keep distance from
the engine as far as possible)
OVERSEAS SALES DIVISION
20 Oyamazuka,Oiwacho,Toyohashi, Aichi 441-3193 Japan
TEL:+81-532-41-2512
FAX:+81-532-41-4441
URL:http://www.honda-el.co.jp/
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