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.

2

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

25

6

77

10

12

13

15

1717

18

19

20

2222

22

23

24

25

26

2626

26

26

27

27

27

27

2828

3

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

28

28

28

28

29

29

3030

30

30

30

30

31

31

31

32

3333

33

34

34

34

34

3535

35

35

35

35

36

36

36

36

36

4

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)

36

3838

39

40

41

41

41

41

41

41

42

43

44

45

46

5

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.

6

Check the content

3

1

21515

1414

4 5

12121313

1111

1010

6

7

89

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

7

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

8

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

9

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

10

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

11

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.

12

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

13

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

14

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

15

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

16

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:

17

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

18

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.

19

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

20

Quickly enter into [GPS operation]Quickly enter into [Waypoint]

Note: pushing the key for 3s will start autopilot: back to home.

Quickly Operation

21

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

22

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

23

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].

24

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

25

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.

26

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

27

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.

28

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

29

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.

30

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

31

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：

32

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.

33

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

34

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)

35

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

36

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.

37

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.

38

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

39

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.

40

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.

41

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.

42

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.

43

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.