Spektrum DX18 SPM18000 User Manual

Product codes
SPM18000
Page of 45
31
SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL
EN
Pitch Curve
This function supports adjustment of collective pitch in 5 fl ight 
modes. 
To adjust the Pitch Curve:
1. Select the Pitch Curve you wish to edit (N, 1 or 2).
2. Scroll right to select the points on the curve and edit the 
respective values.
3. Press the BACK button to save the Pitch Curves and return to 
the Function List.
Swashplate
The Swashplate menu option enables you to adjust the following:
• Swashplate Mix
• Exponential
• E-Ring
• Elevator Compensation 
Use positive or negative Swashplate mix values as needed for 
correct direction response of the helicopter.
Before making adjustments to the Swashplate mix, make sure 
the throttle/collective pitch input moves the entire swashplate 
up or down. If the servos are not moving in the same direction, 
reverse them as necessary in the Servo Setup menu option.
When the entire swashplate moves up or down:
1. Adjust the mix value for the Aileron and Elevator channels. If 
the servos do not move in the correct direction, change the 
direction of the mix, for example, a positive value instead of 
a negative value.
2. Adjust the mix value for the Pitch. If the swashplate does not 
move in the correct direction, change the direction of the 
value (negative instead of positive). 
Always enable Expo when using a standard rotating-arm servo.
The Expo delivers linear movement of the swashplate from a 
standard rotary servo. When Expo is inhibited, the arm on a 
rotary servo moves on a curved path, with decreased swashplate 
movement at the extremes of the servo arm travel. 
NOTICE: Do not enable Expo when using a linear servo.
Electronic E-Ring
This feature prevents overdriving servos by limiting servo travel if 
the sum of your cyclic and pitch inputs exceed servo limits.
Swash Type
The Swash Type menu option assigns  the swash type for your 
particular helicopter model. 
Select the Swash Type before completing any programming in 
the Function List. The Swash Type will affect menu options in the 
Function List.
Collective Type
The collective type is used to turn on “Pull” collective for 
reversed collective.  Available settings are Normal and Reverse.   
The Collective Type allows the throttle/pitch stick to operate in 
reverse and ensures trims, curves and all other functions that 
are to work in reverse funtion properly.
CHAPTER 3 HELI (Helicopter)
NOTICE: Refer to your helicopter, gyro and governor manuals for programming recommendations.
CAUTION: 
Always do a Control Test of your model with the transmitter after programming changes 
to make sure your model responds as desired.