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3 The transmitter functions and general settings (Mode 2) 

1 The transmitter introduction

SWB Mode switch

SWA Mode ON/OFF

Auxiliary channel 1 

2.4G Antenna

Auxiliary channel 2 

SWA Mode switch

SWB Mode ON/OFF

Manual Mode Indicator Light

One key To Return Home Mode

Power ON/OFF

Trimmer

Stable Mode Indicator Light

Buzzer speaker

Power indicator light

 Forward/Backward Left side/Right side flying stick

 Low voltage indicator light

Throttle, Turning Left/Right Stick

2 Transmitter Mode setting. (the CX-20 the example) 

NOTE: No matter indoor or outdoor , to set the transmitter in Manual Mode before flying.

SWA Setting SWB Setting Mode type

Manual Mode

Stable Mode

Flight Direction Locked Mode 

Altitude Sensor Mode

One Key To Return 

Home Mode

6 - Axis System

Auto-Pathfinder

USER MANUAL

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Basic operation1. Bindingδ1εTo insert the battery into the quadcopter battery container and connect them.  The Red indicator light and the Green indicator light will blink rapidly alternately,  please do not move and shake the quadcopter at this moment; to close the  battery cover when the Red indicator light and the Green indicator light blink  slowly alternately.δ2εTo turn on the transmitter, the binding with the quadcopter will succeed after the  switching-on sound of the transmitter stops. (NOTE: 1.To put the throttle stick to the lowest position before the binding.  2.SWA,SWB switches need to be in the “0” position.)2. To receive the GPS signalsδ1εFor the first time outdoor, it takes longer to get the GPS signals, please wait  about 2 minutes until the LED light becomes steady.δ2εPlease do not use the GPS Modes (Stable Mode and Return Home Mode)  indoor in order to avoid accidents.3. Motor Unlock & Motor Lockδ1εMotor Unlock: Once binding, to put down the throttle stick to the bottom right  position. When the Red light become steady, the motors are unlocked.δ2εMotor Lock: Once binding, to put down the throttle stick to the bottom left  position. When the Red light blinks, the motors are locked. 4.Calibration: If the quadcopter flies unsteadily, it needs to be recalibrated, the calibration methods are as follows:δ1εTo move the throttle stick to bottom left, the Red light and Green light blinks  alternately, then it is locked. δ2εTo move the throttle stick to bottom right until the rear red and yellow lights  blink alternately, then to take off the quadcopter and make it hover in the air for  more than 20 seconds, and to land and lock it again. The quadcopter can fly  steadily after it is re-unlocked. 

Motor Unlock(left hand) Motor Lock(left hand) Motor Unlock(right hand) Motor Lock(right hand) 

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δ6εReturn Home when the quadcopter is out of control: When the quadcopter 

 is out of control, it’ll turn into the Return Home Mode and return back and  land in the position when it is unlocked automatically.

δ7εThe cancellation of the Return Home Mode: In Return Home Mode and 

 after the quadcopter returns to the areas in which it can be seen, if you  want to stop the Return Home Mode, you need to do the following steps: A:If the SWA is on the “0” position in the Return Home Mode, to set SWA  on “1” position first and then to turn it back on “0” position, then the  Return Home Mode is canceled. B:If the SWA is on the “1” or “2” position in the Return Home Mode,to set  SWA on “0” position first , then to turn it back on “1” position and then to  turn it on “0” position again, then the Return Home Mode is canceled.

NOTE:1. It is suggested to use only Manual Mode, Stable Mode and One Key to Return Home Mode for the beginners,  it means to use the SWA switch only; 2. It is required to take off in the Manual Mode.

5 Low Voltage Protection for the quadcopter δ1εLow voltage protection is a protection system designed to avoid the quadcopter to 

 crash in low battery voltage. When the battery voltage is between 10.2V to 10.4V,  the quadcopter will activate the low voltage alarm and give out the “beep, beep...” sound, and the front and rear indicator LED lights will blink at the same time.

δ2εThere is 1-2 minutes to fly safely after turning into low voltage protection, therefore 

 the pilots need to adjust the flying distance and to prepare to return safely. 

6 Low Voltage Protection for the transmitterδ1εLow voltage protection is a protection system designed to avoid the signal 

 interruption for the transmitter in low battery voltage.

δ2εWhen the battery voltage is low, the transmitter will give out the “beep, beep...”

 sound, and the power indicator light will blink slowly at the same time.

δ3εPlease change the battery in low voltage protection.

7 Frequently asked questions and solutions

Frequently asked 

questions Solution

Fly in circle in 

Stable Mode

1. Poor GPS signal. To change to some other open places.

2.2.To fly 3-5 minutes in Manual Mode, and it’ll get the GPS signals automatically

1.SWA switch is not set on the “0” position 2.Low battery voltage, please change the battery.

To make sure the propellers are installed correctly, to reinstall the propellers if they are installed reversely.

Poor GPS signal. To change to some other open places.

The quadcopter need to be recalibrated.

Motors does not work

The quadcopter 

does not rise

Does not 

return home accurately

The quadcopter 

can not hover

5 Mode Switched

δ1εManual Mode: To set SWA on the “0” position, after the motors are unlocked, to push the throttle stick, then it can go forward/backward, go up/down, do left-side flying/right-side flying, turn left /right, etc. δ2εStable Mode: To take off the quadcopter and keep it in a certain height in Manual Mode, then to set  SWA on the “1” position, SWB on the “0” position, the quadcopter will start to hover, then to push the throttle stick in the middle position, the quadcopter will keep in the current altitude and position.NOTE:1.In stable Mode, the GPS signal indicator light should be steady, it means that the signal is good. 2.Stable is relative stable, it can move in a certain range depending on the speed of the wind and  the weather, therefore you need enough safety space to fly it. 3.In Stable Mode, the throttle stick needs to be in the middle position, it gives out  “beep, beep, beep...”sound when the throttle stick is in the middle position in order for you to  better control it.δ3εOne Key to Return Home Mode: When you need the quadcopter to return back, to set the SWB on  the “0” position, the SWA on “2” position. Then the quadcopter will return back from the returning  point to the starting point straightly. If the returning point is higher than 15 meters, the quadcopter  will return back in the current altitude. If the returning point is lower than 15 meters, the quadcopter  will rise to the 15 meter height and then to return back.NOTE:1.In Return Home Mode, to make sure the GPS signal indicator light remain steady, it means that  the signal is good.  2.It’s suggested to switch to the Stable Mode first or until the quadcopter becomes stable to  return back. 3.To turn the quadcopter to face the taking-off point before returning home, and to turn the  quadcopter to the positon while taking-off after it returns back. 4.After returning back, the quadcopter will lock automatically; if you need to restart the motor,  please set the SWA to “0” position first and then to unlock the motors.δ4εFlight Direction Lock Mode: While flying, to set SWA on the “1” position and SWB on the “1” position  first. The forward direction will be as per what the head of the quadcopter goes toward when it is  unlocked rather than as per what the head of the quadcopter is facing now, and the same analogy  applies to other directions.NOTE:1. This mode is not appropriate for the beginners, it needs more skills and experiences to do so. 2.In this mode, the quadcopter can return safely in long distance or in poor light.δ5εAltitude Sensor Mode: After taking off in the Manual Mode, to set SWB on the “1” position and SWA  on the “2” position, then to push the throttle stick to the altitude you want and to set the throttle stick  to the middle position, the quadcopter will remain the current altitude constantly, and in the  Altitude Sensor Mode, the quadcopter will fly in constant altitude. NOTE:1. In Altitude Sensor Mode, the throttle stick needs to be in the middle position, it gives out  “beep, beep, beep...”sound when the throttle stick is in the middle position in order for you to  better control it. 2:Constant altitude is relative constant, it can move in a certain range depending on the speed of  the wind and the weather, therefore you need enough safety space to fly it.

2 The instructions for the indicator lights and the status

The indicator light for the main controlboard calibration, motor unlock/lockinstructional light (YELLOW light/RED light)

GPS signal instructional light(GREEN light)

The rear downward LED(GREEN)

The rear downward LED (GREEN)

The front downward LED (RED) 

The front downward LED (RED)

δ1εThe front indicator light: a. The red light keeps steady when the motor  starts. b. The red light blinks in low voltage and there is a alarm sound  if the frequency is below 1Hz.δ2εThe rear indicator light: a. the green light keeps steady when the motor starts. b. The green light blinks and there is a alarm sound if the  frequency is below 1Hz.δ3εThe indicator light of the main control board calibration, motor  lock/unlock indicator light. The yellow indicator light and red indicator  light blink alternately when the main control board calibrates. The red light blinks slowly when the motor is locked, and the red indicator light keeps steady when motor is unlocked.δ4εGPS signal indicator LED light: The green indicator light blinks when 1 LED instruction2 The descriptions of the LED indicator light status less than 6 satellites from the GPS system are received; the green  indicator light keeps steady when more than 6 satellites from the GPS  system are received. NOTE: The satellites received from the GPS  system must be more than 6 satellites in Stable Mode and  Return Home Modes. (The green indicator light keeps steady) 

2 Safety mat ers needing attention Aircraft flight is a high risk hobby, whose flight should be kept far away from other people. Mis-assembled or broken main frame, defective  electronic equipment ,and/or problematic radio system will lead to unforeseen accidents such as bodily inlury or property damage.  The pilot MUST pay attention to the fight safety and UNDERSTAND his responsibility for accidents caused by his carelessness.

(4) Avoid flying alone At the beginning of learning about radio -controlled flight there are some difficulties  to overcome. Please avoid flying alone.  Invite experienced pilots to guide you (two  of the most effective methods to practice  are via a PC flight simulator and/or under  the supervision of a skilled pilot).(5) Safe operation Please fly your Aircraft according to your  physical status and flight skiIIs. Fatigue, listlessness and mis-operation wiII increase  the possibilities of accidental hazard.(6) Away form highly spinning parts Please keep pilot, people and object away from the spinning blades of both man rotor  and taiI rotor.(7) Protect form heat An Aircraft is made from metal, fiber, plastic and electronic components,efe. Please keep  away from heat and sunshine in order to avoid distortion, even damage, caused by high temperatures.

3 Attention before flight (1) Ensure the battery packs of both transmitter and receiver are fully charged(saturated). (2) Ensure both the throttle stick and the throttle trim of your transmitter stay at the lowest positions before operation. (3) Please strictly obey the order of turn-on and rurn-off before operation. When starting your flight.please turn on your transmitter first, 

 and connect the power cable of your Aircraft last. When finishing your flight, please disconnect the power cable of your Aircraft first,  and turn off your transmitter Iast. (4) An upset in the order of connection may cause your Aircraft to loose control. Please cultivate a correct habit of turn-on and rurn-off.

1 Important Statement (1) This product is not a toy. It is a piece of complicated equipment which harmoniously integrates engineering materials, mechanics, electronics, aerodynamic and high frequency radio. Correct installation and adjustment are necessary to avoid accidents taking place. The owner must always operate in a safe manner .Improper operation may resuIt in serious property damage, bodily injury or over death.(2) We accept no liability for damage and consequent damage arising from the use of these products, as we have no control over the way they are maintained, used and operated.(3) This product is suitable for experienced Aircraft pilots aged l4 years or more .All minors must be accompanied by a respensible adult when flying.(4) The flight field should be legally approved by the local government . We accept no liability for any safety duties or fines arising form operation,  usage or mis-control after the sale of the products.(5) We oonsign our distributors to offer technical support and service after sale. Please contact the local distributors for problem resolutio caused by usage,operation,maintenance ,etc.

Deat customerφThank you for purchasing a Cheerson radio control aircraft product.In order to quickly and safely master the operation of the “CX-20”, please read the user handbook carefully and then keep it ina safe place for futureconsultation and refernce.

(1) Far away from obstacles and people An Aircraft in flight has risk of uncertain flight  speed and direction which is potentially  dangerous. When flying,please keep your  Aircraft far away from people, high buiIdings, high-tension lines, etc, and avoid operating in rain,storms, thunder and lightening.(2) Keep away from humidity Aircraft should be kept away from humidity  and vapor because its complex,precise  electronic components and mechanical  parts may be damaged.(3) Proper operation and maintenance Please use Walkera original spare parts to  upgrade, modify or maintain your Aircraft in  order to ensure its safety.Please operate  your Aircraft within the range of functions  permitted. It is forbidden to use it outside of  the safety laws or regulations.

˄1˅To prepare the quadcopter and propellers˄2˅The propeller with spin-mark should be installed upward, and to make sure  the spin-mark of propellers and its equipped motor rotate in the same  direction.˄3˅To use the hexagon wrench in the kits to tighten the omament cap of the 

1 

 motor ( Note:For the black omament cap, to tighten the cap anticlockwise, for the silver cap, to tighten it clockwise ).

Installation instructions

δ1εTo prepare the quadcopter and  landing gears.δ2εTo install the landing gear with the  antenna hole on the body with antenna, and to fix the landing gear with the screws.δ3εInstall the other landing gear on  other side, and to fix the landing gear  with screws. δ4εTo place and fix the antenna in 

2 The Landing Gear & 

 the groove of the landing gear  with 3M scotch tape.

1 The Propellers Installation Antenna Installation

Clockwise signal 

Clockwise propeller

Anti-clockwise signal 

Anti-clockwise propeller 

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