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USING OTHER FUNCTIONS 

LEVER SPRING TENSION ADJUSTMENT 

The stick spring strength can be adjusted. 
The operation feel of the throttle sticks can be 
individually adjusted. 

 

1.  Remove  the  four  transmitter  rear  case 

screws and remove the rear case. 
 
2.  Adjust  the  spring  strength  by  turning  the 
screw of the channel you want to adjust. 
 
3.  Close  the  rear  case  and  tighten  the  four 
screws. 

GLOSSARY 

The following defines the symbols and terms are used in this instruction manual. 

 

Aileron (AIL):

 Control surface at the left and 

right side of the main wing of the model. It 
usually controls turning of the model. 
 

Channel: 

Represents the number of control 

systems. It can also represent the number of 
servos that are operated. 
 

Down: 

Means down elevator. It is the direction 

in which the trailing edge of the elevator is 
pointing down. 
 

Elevator (ELE): 

Control surface that moves up 

and down on the horizontal stabilizer of an 
aircraft. It usually controls up and down. 
 

Linkage:

 Mechanism that connects the servos 

and the fuselage control surfaces. 
 

Neutral: 

Means the neutral position. It is the 

state in which a transmitter stick returns to the 
center when not operated. 
 

Normal (NOR): 

For the servo reversing 

function, it is the normal side, the opposite side 
is the reverse side. 
 

Rudder (RUD): 

Tail control surface that 

controls the direction of the aircraft.   
 

Reverse (REV): 

With the servo reversing 

function, this is used to mean the reverse side. 
The opposite side is the normal side. 
 

Rod: 

A bar that connects the servos and the 

fuselage control surfaces. 
 

Servo Horn: 

A part that is installed to the shaft 

of a servo and changes the rotating motion of 
the servo to linear motion and transmits the 
linear motion to a rod. Servo horns come in 
various shapes. 
 

Stick: 

Rod for operating the transmitter. 

Trim: A device that fine adjusts the neutral point 
of each servo for safe flying. It is a mechanism 
that corrects bad tendencies of the aircraft. 
 

Summary of Contents for AT402

Page 1: ...Radio Control Transmitter AT402 INSTRUCTION MANUAL Digital Proportional Radio Control System Taizhou Best Team Technology Limited www rcmodel net ...

Page 2: ...turn Off the transmitter power switch Failure to follow this order could cause the engine to go to full throttle and cause an injury Do not make adjustments to the radio system while the engine is running unless absolutely necessary Failure to do so could cause the engine to accidentally go to high speed and cause an injury The transmitter is designed for use with 8 dry cell Non rechargeable AA si...

Page 3: ...ttle trim lever model 1 Elevator trim lever model 2 Carrying bar Elevator model 1 Throttle model 2 rudder stick Throttle model 1 Elevator model 2 Aileron stick Rudder trim lever Aileron trim lever Hook LED Power on Power switch in the upper position the power is turned on Crystal Jack Battery Box Cover Use when replacing the battery Battery Box Charging Jack Charging jack when the transmitter was ...

Page 4: ...unted as shown in the model s instructions Use the rubber grommets screws and brass eyelets supplied when mounting your servos Do not over tighten the mounding screws The servos should be able to move slightly to compensate for engine vibration For each servo use a servo horn long enough to accommodate the entire range of movement for that particular control When mounting the servos make sure the ...

Page 5: ...of gravity is at the prescribed position Before making and adjustments set all the servo reverser switches on the front of the transmitter to the lower NOR position Switch the switches with a small screwdriver Turn on the transmitter and receiver power switches and make the following adjustments 1 Neutral Adjustment Check the aileron elevator and rudder neutral adjustment and left right up down th...

Page 6: ...oves up and down on the horizontal stabilizer of an aircraft It usually controls up and down Linkage Mechanism that connects the servos and the fuselage control surfaces Neutral Means the neutral position It is the state in which a transmitter stick returns to the center when not operated Normal NOR For the servo reversing function it is the normal side the opposite side is the reverse side Rudder...

Page 7: ...y one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This equipment complies with FCC radiation exposure limits set forth for uncontrolled e...

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