1
Preface
As Yachting Electronic Co., Ltd is continuously improving this product, we retain the
right to make changes to the product at any time which may not be reflected in this
version of the manual. Please contact your dealer if you require any further assistance.
It is the owner’s sole responsibility to install and use the instrument and transducers in a
manner that will not cause accidents, personal injury or property damage. The user of
this product is solely responsible for observing safe boating practices.
Sonar PerformanceThe accuracy of the sonar depth display can be affected by many factors, including the
type and location of the transducer and water conditions.
The choice, location, and installation of transducers are critical to the performance of
the system as intended. If in doubt, consult your local dealer.
To reduce the risk of misusing or misinterpreting this unit, you must read and under-
stand all aspects of this Installation and Operation Manual. We also recommend that
you practice all operations using the built-in simulator before using this unit on the
water.
Global Positioning System: The Global Positioning System (GPS) is operated by the US Government which is solely
responsible for its operation, accuracy and maintenance. The GPS is subject to changes
which could affect the accuracy and performance of all GPS equipment anywhere in
the world, including this instrument.
Warnning: disassembly and repair of this electronic unit should only be performed
by authorized service personnel. Any modification of the serial number or attempt to
repair the original equipment or accessories by authorized individuals will void the
warranty.
We may find it necessary to change or end our policies, regulations and special offers at any time. We reserve the right to do so without notice. All features and specifications subject to change without notice.
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ContentsOverview
Check the Content
InstallationTransducer Installation
GPS Receiver Instrallation
Antenna Installation
Connection
Powering
Using InstructionSome warnnings
What’s on the display
Key Function
Quickly Operation
Start UsingSet HOME position
Save a waypoint
Go to target waypoint
Import KML
Go back
Menu Opertion
BasicSensivity
Surface Clarify
Fish ID. Sens
Background
Color Adjust
Color Style
Advanced Mode
SonarDepth Range
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77
10
12
13
15
1717
18
19
20
2222
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24
25
26
2626
26
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27
27
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2828
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Sonar Gain
Load New Color
Overlap Data
Depth Offset
Temp. Offset
Shallow Alarm
GPS SETTINGSGPS Filter
Distance Unit
Speed Unit
Time Zone
24-Hour Time
Sample Step
Arrive Alarm
Calibrate compass of display
Calibrate compass of boat
AutopilotWirling Test
Boat Type
Channels Reverse
Channel 1 Speed
Channel 2 Speed
Steering Sens.
SystemSimulator
Backlight
Key Tone
Language
Baud Rage
Battery Alarm
Boat Vtg. Alarm
Default Settings
System Info.
Radio Bind
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3030
30
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31
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3333
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3535
35
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Update R-Boxes.
Quick QperationQuick Marker
Waypoint
Route
Go back
Set Home Pos.
Go to Home
Stop Autopilot
Clear Map
Import KML
Overlap Data
Specifications
Warranty
Unit Care
FAQ (Frequenly Asked Questions)
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3838
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40
41
41
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Overview
TF740 is an ALL-IN-ONE Autopilot navigation and sonar system, which was specially designed for all kinds of bait boats.
Push-Go Key (shortcut)
Pick Up Waypoint form Map
KML Import to Define Lake Boundary
Two Propellers Boat Support
Propeller & Rudder Boat Support
Steering Sensitivity Adjustable
Built-in Lithium battery Charger
Hardware Gain Adjustable
Color Route to Indicate Depth (2D Map)
Advanced radio system (FHSS/DSSS)
What’s the advantage of TF740?
The TF740 was specially designed for bait boats. It was combined with wireless
Sonar, High Position accuracy GPS and Autopilot.
The advanced sonar features show you actual bottom condition and ish. The
autopilot function can automatically guide the boat to saved waypoint precisely,
which make it possible to use the boat under bad condition, such as night, heavy
fog, etc.
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Check the content
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1
21515
1414
4 5
12121313
1111
1010
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1.Display2. SonarBox-740w3. Autopilot CCU7404. XGPS 7405. Transducer
6.Rubber for transducer7. SonarBox extending cable8. Power cable9. Servo cable10. Antenna for boat
11.Antenna for display12. Bracket of GPS receiver13. Screws (4pcs)14. Valco15. Antenna extending cable
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Transducer Installation1) for XBOAT730
Installation
Transducer Mounting InstructionTransducer Knob
Rubber
Screw down the 2 screws to
loose the battery support1
take the knob and fake
transducer down3
screw tight the knob5 installation was finished6
hold the transducer(with
rubber) through the boat4
loose the knob of fixed fake
transducer by hand2
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2) for general bait boats ( like Carp Madness, Viper, etc)
For these bait boats, there is no transducer groove on the bottom housing. So, you
need to drill a hole on the boat bottom to fix the transducer.
3) for bait boats of Carplounge/Waverunner/Vegaboat/Carp, etc
For these bait boats, there is a transducer groove on the boat bottom. So, you only need
to simply match the transducer to the boat with a rubber.
Transducer
Knob
Rubber
Transducer Mounting Instruction
1) Choose a proper position
2) Drille a hole (14mm) on the
selected position.
3) Assemble the transducer
and rubber.
4) Hold the assembled
transduer and rubber through
the housing. Then use the knob
to screw tighten the transducer
from the inner housing.
5) The finished installation.
1
2
3 4 5
keep the sharp end the same
direction with head of
boat
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4) for Anatec catamaran bait boatFor the boat, you only need simply match the transducer to the boat with the rubber
Transducer Mounting Instruction
1) Take off the transducer
cover from the boat.
2) Assemble the transducer
and rubber.
3) Hold the assembled
transduer through the groove.
4) Use the knob to screw
tighten the transducer from
the inner housing.
5) The finished installation
1
2
3 4 5
keep the sharp end the same
direction with head of
boat
Transducer
Knob
Rubber
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1) for XBOAT730
GPS receiver Installation
Transducer
GPS receiverScrews
GPS bracket
Take the GPS lid down from
XBoat1
Slid the GPS receiver to the
GPS lid3Hold the assembled GPS receiver
and lid going through the boat4
Fix the GPS bracket on the
GPS lid2
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Note: when begin installing the GPS receiver, some key points should be noted:
1) The antenna for transmitter should be at least 30cm away from any other antennas.
2) The GPS receiver should be mounted where is far away from any magnet things,
such as icro, nickel, etc. Which may cause interference of compass.
3) The icon of arrow on the GPS receiver should be oriented in the same direction
with the heading direction of boat.
4) After the installation, please check the compass. If you find the compass does not
show proper direction, please calibrate the compass by manual operation. For the
details, please refer to page 31 (Calibrate Compass of Boat).
1
2
3
4
2) for general bait boats ( like Anatec, Vegaboat, etc)
Find a proper location on the boat, then fix the GPS bracket on the boat. And finally
install the GPS receiver on the bracket.
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Following is the instruction to install the antenna on boat:
1) Choose an proper installation position.
2) Drill an hole (5mm diameter) on the selected position.
3) Screw down the wisher and nut from the antenna extended cable.
4) Hold the DC cable through the hole from inner housing, then put the
wisher and the nut.
5) Screw tighted the nut by an wrench.
6) Finally, screw the antenna on the boat.
Screwing the antenna to the boat will be ok.
for display
for transmitter
for display
2) for general bait boats ( like Anatec, Vegaboat, etc)
1) for xboat730
Install antenna for transmitter
In the package, you can find 2 antennas. one is for
transmitter, another is for display.
ded cable
Antenna Installation
Knob
Install Antenna on boatInstruction
1
antenna extended cable antenna for transmitter
2 3
4 5 6
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ConnectionAfter all the installatiion are finished, please make the connection as following fiture.
Sonar Box
Autopilot CCU
Power (DC 12V)
Signal port
to servo / ESC of boat
to remote receiverto Sonar Box-740W
to antenna
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Connection of CCU-Autopilot
connected to
SonarBox-740w
Port B is connected to
Reciver of the remote
Port A is connected to Speed
Contorller(ESC) or Servo
The following figures instruct how to connect the Autopilot CCU740 with your bait boat.
The system could control most 2 engineers or 1 engine (with rudder) boat with proper
settings.
Xboat mode ESC of Right Motor ESC of Left Motor
2 Engines ESC of Right Motor ESC of Left Motor
1 Engine ESC Servo
channel-3 channel-1
channel of right Motor channel of left Motor
channel of ESC channel of servo
Port A
Transmitter connection & function
Port B
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Recomended voltage
Absolute Maximum voltage
For display
9-15V
16.0V
For transmitter
6-12V
14.8V
There are 2 ways to power the TF740 display
1) Use a inner 3S lithium (12.6v) battery pack as shown in the picture.
2) Use a outer lithium battery
Note:
3S Lithium battery is optional (users can buy it from local dealer)
DC15V /1A wall-charger support (optional)
The device work while battery-charging support
indicator LED of working
3S lithium battery pack1) charging port
2) outer battery connection
indicator LED of working
Powering
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Battery Type
12V Lead-acid
8*AA NiMH
8*AA Alkaline
2S Lithium
3S Lithium
4S Lithium
Voltage
10.8v~14.8V
7.8V~10.6V
7.5V~12.8V
5.6~8.4V
8.4~12.6V
11.2V~16.8V
Permission
12Vlead-acid
8AA NiMH
8AA Alkaline
2S Lithium
3S Lithium
4S Lithium
Note: overvoltage may burn the elements in the device!
From bellow shows the voltage range of the most popular batteries in the market:
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Using instruction
Special NotificationsBefore you start using the device, there is something you should know:
1) please do not put the display on ground
during the operation, which could cause a
short R/C distance.
The proper way is using an tripod to
support the display, and keep it at least
1.2m above the ground.
2) Please turn on the SonarBox and X-Pilot
CCU first, then turn on the display. Otherwise
the display will indicate an error message as
following:
3) Please start using the device only when the Satellite Number reach more than 7,
which means the GPS signal is strong enough.
Note: the most satellite number
TF740 can reach is 12.
Radio module......FailSonar module......FailGPS module......FailCompass module......OkAutopilot module......Fail
System check
Satellite Number
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What’s on the display
Depth readout
Water temp
Voltage of bait boat
SD Card in
Strength ofRadio signal
Distance to Home
Time
Speed of boat
Voltage of display
Depth range at bottom
Fish symbol
Structure
Indicator of Boat heading direction
Number of satellite
Distance to Target
Autopilot mode
Remote mode
Surface clutter
Route of boat
Note: on the route, different color means the depth changing of the water while the boat is running.
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MENU Open Menu settings( Basic, Sonar, and GPS SETTINGS, AUTOPILOT, SYSTEM).
PUSH-GO Used to quickly enter into waypoint or go home by one-button pusing.
KEYPAD Selects items on menus; increase & decrease a value of option.
POWER Turns unit on/off. Also be use to quit a menu setting.
PAGE
ENTER
ZOUT /ZIN Used to zoom out GPS route on the screen.
Used to switch between main menus or some sub menus.
Finalizes menu selections; confirm a setting. ENTER key is also used to quickly enter into GPS Operation menu.
MENU
ZOUT/ZIN KEYPAD
PAGE
POWER PUSH-GO ENTER
Key Function
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Quickly enter into [GPS operation]Quickly enter into [Waypoint]
Note: pushing the key for 3s will start autopilot: back to home.
Quickly Operation
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How to set the Overlap Data?
1) Press Key to enter into [QUICK OPERATION], then choose[Overlap Data]2) Use keypad to choose an option which you hope to change, then press key to
enter into the option menu.
3) Choose an new option to replace, and press Key to confirm.
You can use Overlap Data to determin which option will be displayed on screen: Time of day, Heading, Speed, date, etc.
Change the displayed option on screen
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1) Press key to enter into QUICK OPERATION.2) Use keypad to choose [Set Home Pos.],,then press to confirm.
When the boat arrive at a positon, you can choose to save it as a waypoint:1) Press key to enter into QUICK OPERATION.2) Use keypad to choose [Quick Marker], then Press to enter into the waypoint detail info.3) Set the options and choose OK. Now, the waypoint was successfully created and saved in waypoint list.
Note: After the device is powered on, it will set the current location as default HOME Position.
Save a waypoint
Set HOME position
Start Using
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Go to target waypoint1) Press key to enter into QUICK OPERATION2) Use keypad to choose [Waypoint], then press to enter into waypoint list.3) Choose one target waypoint then press to select [Go to target].
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You can import KML file( from Google earth) to TF740. And run the boat with autopilot to a spot on the map simply by moving the cursor.
1) Press key to enter into QUICK OPERATION, then choose Import kml
2) Import a kml file from the micro SD card.
3) Move the cursor to a location on the map.
4) Press key to confirm the location. Then choose to save or go.
5) After you choose Gothe autopilot will start.
Note: when you choose a location, please guarantee there is no land obstacle betweem it and the boat.
land obstacle
Import KML
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Go-BackGo-Back can guide the boat running to the first target, and after delaying specified time, then automatically run to the second target.
1) Press key to enter into QUICK OPERATION., then use keypad to choose GO-Back.
2) Select the Target 1 and Target 2 from Waypoint list and Home Position, and set delay time.
3) The boat arrived the first target. And after delaying the set time, then run to the second target automatically.
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SensivityDetermines how echoes will be displayed on
the screen. Increasing the sensitivity will make
you see more details on the screen.
In deep water, increasing the sensitivity.
whereas in shallow decreasing the sensitivity.
Fish ID. SensFish ID. Sens. adjust the threshold of fish size display.
Selecting a higher setting allows weak returns being being
displayed as fish, which is helpful especially when you are
intending to find smaller fish species or bait fish.
Surface ClarifyReduces surface clutter by decreasing the
sensivity of the receiver near the surface.
Selecting a low setting will prevent weak sonar returns being displayed as fish, which
will be very helpful when you are seeking large species of fish.
Note: If you hope to find big fish, please set the value to 1; However if you hope
to find all the fish, including small ones, set the value to 3
Menu Operation
Basic
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BackgroundChoose a background for echo style.
Dark background for night time, and white
background for daytime is recommended.
Color StyleUsers can choose different color style for sonar image.
Color AdjustAdjust the contrast & brightness of sonar image.
Advanced ModeTo enable the advanced function of Sonar, GPS SETTINGS, AUTOPILOT.
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Depth RangeDetermine in which portion the bottom will be
displayed on the screen.
Load New ColorLoad a nw color file from SD card.
Sonar GainThe gain controls the sensitivity of the hardware
receiver. A higher gain makes the sonar more
sensitive to echo returns, allowing it to display
weaker targets.
If the gain is set too high, the image might be
cluttered with background noise.
Note: when set in [shallow water mode], the
[Gain] option will be disable.
Overlap DataUsed to select data shown on the top left conor of
display (Depth, temperature, Boat Bat.)
Depth OffsetAdjust the digital depth readout to indicate depth
from the waterline.
Sonar
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Temp. OffsetAdjust the digital temperature readout to indicate temp.
from the waterline
Shallow AlarmSounds when the depth becomes equal to or less than
the menu setting.
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GPS FilterDetermines in what satellite condition the device will
stop GPS navigation automatically.
For higher setting, the system will give up low HDPO
(a factor in determining the relative accuracy of
horizontal position) coordinate data to avoid error
data.
Speed UnitSelects the unit of boat speed.
24-Hour timeto set if using 24-hour time rule or not.
Distance UnitSelects the units of measure for all distance-related
readouts
Time ZoneSelects time zone for using in different countries.
For example:
- Germany, France, Cetherland, Italy, Poland : 1
- Bulgaria, Romania, Ukraine, Greece: 2
- Russia: 3
For your time zone, please refer: http://www.worldti-
mezone.com
GPS SETTINGS
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Sample StepSet the distance for GPS data sampling. If you
set 3, it means the GPS will sample data every
3m.
Note: the smaller the value is, the more
GPS data the device will generate.
However that will correspondingly cause
the system react slow.
Calibrate Compass of DisplayUsed for calibration of compass built in the display
The device provide you an perfect compass function.
However due to some unpected reason, sometime
you may find the compass indicator does not show
the proper direction. Then it is necessary for you to
callibrate the compass.
Arrive AlarmArrive alarms sounds when the distance from
boat to target waypoint is equal or less than
the menu setting.
Note: when Compass calibration of display start,
please hold the display on hand and turn & tilt it in
a figure-8:
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Calibrate Compass of BoatUsed for compass calibration of the boat
Note: to calibrate compass of boat, just put the
boat on water, and run it clockwise and anticlock-
wise.
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Wirling TestAfter you finished all the connections between X-Pilot
and your boat, please use the [Wiring Test] to test the
motor (or rudder) to sure the sytem could control the
boat properly.
Boat TypeTF740 autopilot function can work with most kinds of bait boats( with 2 engines or
1engine & rudder) . So, before you start the operation, please select the corresponding
boat type.
NOTE: before making the test, please check
[Boat type] and choose the relative boat option
according to the type of your boat.
Go Forward: test if the boat can go forward correctly
Turn Left: test if the boat can turn left correctly.
Turn Right: test if the boat can turn right correctly
Stop: stop the boat running
NOTE: if you find the motor (or rudder) does not run at the correct way,
please enter
X-Boat: specially for Toslon X-Boat.
1 Engine: for the boat designed with 1 engine (and rudder).
2 Engine: for the boat designed with 2 engines.
Autopilot
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Channels ReverseDuring you made [Wiring Test], [CH Reverse] is used
to correct the running direction of motor (or rudder)
after you found them did not run the correct direction
as expected.
For example, if your boat are with 2 engines, and you
found the motor was running the counter direction
when you push [Go Forwarder] in the [Wiring Test] , then please enter into [CH Reverse] and select CH2
Reverse.
Steering Sens.Set the sensitivity of boat steering
Channel 1 SpeedLimite the max speed of boat motor (Channel 1)
Channel 2 SpeedLimite the max speed of boat motor (Channel 2)
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SimulatorUsed to let you practicing using the Fishfinder as if
you were on the water.
Key ToneSet if the sonar unit sound a tone or not when a
key is pressed.
LanguageSelect the display language for menus.
Baud RateRS232 communicating data rate.
It is for debug usage only.
BacklightAdjust the brightness of backlight.
System
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Battery AlarmSounds when the input battery voltage of display is
equal to or less than the setting.
System Info.Show system information of device.
Radio BindBind the Sonar-BOX740 with the display.
For the TF740, each SonarBox has an "Identity ". It
only can be connected with one display. And for all
the TF740, Radio Binding process has been done in
advance by our facotry.
However, when you get a new display or SonarBox,
please re-bind the device.
Boat Vtg. AlarmSounds when the input battery voltage of
transmitter is equal to or less than the setting.
Default SettingsUsed to restore original factory setting.
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How to make a Radio Bind?1) first, select the [Radio Bind] from the operation
menu, and confirm it by pressing ENTER key. A
message will appear:
2) Now power on the SonarBox-740.
3) Press OK,then Radio Bind was finished:
Update R-Boxes.Update the firmware of SonarBox-740.
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Quick MarkerUsed to quickly creat an waypoint.
How to use Quick Marker to creat a waypoint?
1) Press ENTER key to enter into QUICK OPERATION menu, then select Quick Marker.
2) Press ENTER key to enter into Detail information.
3) Press OK, the device will mark the current location as a waypoint with default name.
Note: you can use EDIT to change the information (S/N, name, icon).
Quick Operation
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Waypoint List of waypoints which you have created. These waypoints can be edit or delete
Detail: enter into waypoint details.
Delete: delete the waypoint.
Set as Target: set the waypoint as target.
Go to Target: run the boat to the target by autopiloting.
New: creat the currelnt location (of boat) as a new waypoint.
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RouteList of all the routes you have saved.
You can chose to save a route or load a route as target.
Save current: save the current route.
Delete: delete the route.
Rename: rename the route.
Show Route: show the route on screen.
Copy To SD: copy the route to SD card.
Read From SD: copy the route to SD card.
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Go backGuide the boat running to the first target, and after the specified time, it will go to the
second target automatically.
For the detailed operation, please refer to Page 25.
Set Home Pos.Set the current position of boat as HOME point.
Go to HomeGuide the boat to HOME point
Stop AutopilotUsed to stop current navigation
Clear MapClear the route map on the screen.
Import kmlYou can import KML file( from Google map) to TF740. And run the boat with autopilot
to a position on the map simply by moving the cursor.
For the detailed operation, please refere to Page 24.
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Overlap DataDetermines what GPS data will be shown on the display.
How to set the Overlap Data?1) Press key to enter into QUICK OPERATION.
2) Select Overlap Data, then press to confirm.
3) Move keypad to choose one option which you hope to change, then
press , an option list appears.
4) Move select the option you hope to display, then press to confirm
Now, the option was changed sucessfully.
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TFT Color Screen 5"Power DC 9~15VBattery 3S 18650 (Optional)Built-in Lithium Charger YesAC-DC power supply OptionalWater Proof SplashproofMax. Depth 40mSonar coverage 60 degreePing Rate 6HzSonar Software Engine Gen3Hardware Gain Adjustable YesUser Defined Color Scheme Support YesColor Route to Indicate Depth(2D Map) Yestsl2 logger for SonarViewer N/ARadio Frequency 2.4GHzRadio Power(Max) 20dBmFrequency-hopping spread spectrum (FHSS) YesDirect-sequence spread spectrum (DSSS) YesMax Range 300mGPS Accuracy(CEP) 2.5mCompass at Boat Side YesCompass at Dispaly Side YesWaypoint Number 500Routes to be Saved 10Two propellers boat support Yespropeller & Rudder boat support YesSteering Sensitivity Adjustable YesWiring Test Mode YesPush-Go Key(shortcut) YesPick up waypoint form map YesGoogle kml import to Define Lake Boundary Yes
Sonar unit size 170*110*46mmPortable case size 262 x 150 x 98mmGPS receiver cable length 0.7mTransducer cable length 0.6mOperational temperature -10°C ~ 50°C
Autopilot
Technicaland casing
BASIC
Echo Sounder
Radio System
GPS & Compass
Specifications
44
Warranty
1) Warranty Period
Yachting electronic warrants that its products, when properly installed and used will
be free from defects in material and workmanship for the period of 24 months from
the date of first purchase. For Distributors only, the Warranty Period shall run for an
additional three (3) months to that stated for first retail customers.
For the purpose of this Warranty, ‘date of first purchase’ means
(i) for a first retail customer only, the date the product was purchased by the first retail
customer.
(ii) for a distributor only, the date that the product was purchased from Yachting
electronic by the Distributor.
2) Warranty Repairs
Product(s) qualifying for warranty repair will either be repaired, or replaced with new or
refurbished parts or product, or an equivalent product, at the sole discretion of
Yachting electronic. Warranty repairs are covered by the warranty terms and condi-
tions for the remainder of the original product’s warranty period, six months or in
accordance with local jurisdictions, whichever is the greater. The ownership of all parts
removed from the product for the purposes of effecting warranty repairs transfers
from the Owner, back to Yachting electronic.
3) Non-Warranty Repairs
Product(s) accepted for non-warranty repair will either be repaired, or replaced with
new or refurbished parts or product, or an equivalent product, at the sole discretion of
Yachting electronic. Repairs by Yachting electronic Service on equipment that is no
longer covered by any warranties are automatically covered by a six months warranty
or where applicable, in accordance with local jurisdictions, whichever is the greater,
provided that any subsequent failure is for the same reason as which the product had
been originally returned. The ownership of all parts removed from the product for the
purposes of effecting repairs transfers from the Owner, back to Yachting Electronic Co.
Ltd.
45
Clean the screenClean the screen with a mixture of distilled water (50%) and white distilled
vinegar (50%) or Windex® Vinegar Multi Surface. Do not use any type of abrasive
cleaners. They will remove the Anti-Reflection coating from the glass.
Inspect the buttonsMake sure that no buttons are stuck in the down position. If one is stuck, wiggle
the button to free it back to the normal position.
Debris in the keyboard contactsIn case there is dirt or other debris covering the contacts inside the keypad, press
down on the button in question and wiggle it to try to restore its function.
Clean the connectionsCorrosion or oxidation could occur on the power cable connector pins.
This can prevent sufficient power from flowing to the unit. Clean the connections to
be sure. Sometimes the substance is clear and not easily seen.
Contact & Service InformationFor spare parts or service information, please contact one of our local sales offices
or visit our website:
www.toslon.com
Unit Care
46
FAQ (frequently asked question)
1) Please power on the SonarBox-740w first, then
power on the display. If you turn on the unit in
wrong sequence, please restart the display again.
2) Please make sure the radio environment is in
good condition. Too close to the WIFI, BLUETOOTH
device, or noisy R/C controller may result in a very
short RC communiction distance.
1) Please be sure the antennas are connected
properly. And the connector pin of the antenna is in
good condition.
2) Please keep the antenna on the boat at least
15cm high above the water, and the antenna on the
display 1.5meters above the ground.
3) Please make sure the radio environment is in
good condition. Too close to the WIFI, BLUETOOTH
device, or noisy R/C controller may result in a very
short RC communiction distance.
1) The position accuracy of GPS depends on the
satellites signal. If the weather is cloudy or raining,
the satellites signal may become poor.
2) If your boat (with GPS receiver mounted) is
stationary, the position coordinate may be drifting.
Then the error of GPS accuracy may reach 15 meters
or even more.
However, if your boat is moving with speed 0.5m/s
or more faster, the position accuracy will become
good enough.
3) Please be sure the mounted antenna of GPS
receiver is at least 30cm far from any other antenna,
such as antennas for boat or fishfinder.
The unit shows the essage:
Radio module....Fail
Sonar module......Fail
GPS module......Fail
Compass module......OK
Autopilot module...Fail
failure corrective action
The unit lost RF signal in 20
meters
The accuracy of GPS position
is not good
47
4) In some country or region, for national safety
considering, the local government may take some
measures to interface the GPS satellites. Thus the
GPS coordinate offset may be different at different
time.
1) The mounted GPS receiver (with compass built in)
should be far away from such substance: magnets,
iron, nickel, etc. 30cm distance is recommended.
2) The accuracy of the electronic compass normally
is in +/-15 degree range. So, it is normal if you found
there is small error of the compass.
3) The GPS data of boat direction is updated in 2HZ
(twice per second). So, if the boat is turning around
at fast speed, the compass display on screen may be
delayed.
4) If you find the compass completely does not
show the proper direction, please refer page 30 to
calibrate the compass by manual operation.
1) The mounted GPS receiver (with compass built in)
should be far away from such substance: magnets,
iron, nickel, etc. 30cm distance is recommended.
2) Please check the menu [Boat Type] and make
sure you have chosen the right option for your boat.
3) Please make a wiring test to quarantee you have
connected Autopilot CCU740 correctly.
4) If wiring test work fine, and problem still exist,
please try making [Channels Reverse].
The compass does not show
proper direction
The boat do not run the
right direction when you
guide it to the target
waypoint
failure corrective action
48
failure corrective action
The sonar image is fuzzy
between the water surface
and bottom
The boat does not go right,
it always go “S” shape route,
especially when the wave is
big
1) The transducer should be far away from any air
bubbles, such as the engine and propeller. We
suggest installing the transducer at 1/3 position form
the head of the boat.
2) Bubble is the primary source of interference for all sonar equipments. So, the mounted transducer
should be some depth under water. The deeper the
better. 15cm is recommanded.
3) If the depth is less than 15cm, waves of water
surface can affect sonar image quality. Adjust the
sensitivity to 4-6 may help.
1) The mounted GPS receiver (with compass built
in) should be far away from such substance:
magnets, iron, nickel, etc. 30cm distance is
recommended.
2) When wave is big, boat can not run smoothly on
the water, the device always correct the route once
the boat is far off track, which my cause the boat
going “S” shape route.
Please try decreasing the Steering Sens.
1) For all sonar devices, there are two blind regions,
even for the high frequency sonar like the TF740, the
blind regions still exist:
- One blind region: 0.5 m below from water sufreace.
- Another blind retion: 0.3m above bottom.
If fish is in the blind region, it is hard to detect.
So, to get an perfect sonar performance, we suggest
using the device in water not shallower than 1.2m.
2) [Fish ID. Sens.] menu control the threshold of fish
size display. If needed, please set the [Fish ID. Sens.] parameter to 3
There is no fish detected on
display, even I can see fish in
the water.
49
1) 1) Please check the radio link first, or just check
the power on message box to find if all sensors
were successfully connected or not.
2) Oil, dirt and fuel might cause a film to form on the
transducer and reduce its effectiveness. Cleaning
the surface of the transducer might help.
3) Bad connection of the transducer.
1) If the speed of boat (with GPS receiver mounted
on) is less than 0.6m/s, the GPS data of boat
heading direction will be always wrong. And
generally the boat is very slow when it is close to
the desination. So, it is difficult for you to precisely
operate the boat reaching to the desitination only
with GPS function.
2) With the compass, you can observe the precise
heading direction of boat even it is very slow.
failure corrective action
No depth readout on display
Why compass function is
needed? I think GPS is
enough for navigation of
my boat.