Spektrum DX18 SPM18000 User Manual

SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL

The Servo Setup menu contains the following functions:

• Travel Adjust
• Sub-Trim
• Reverse
• Speed
• Abs. (Absolute) Travel
• Balance

Travel Adjust sets the overall travel or endpoints of the servo arm 
movement. 
To adjust travel values:

1. Scroll to the channel you wish to adjust and press the scroll 

wheel. When adjusting travel values assigned to a control 
stick:

  a. Center the control stick to adjust both directions at the 

same time.

  b. To adjust travel in one direction only, move the control 

stick in the direction you wish to adjust. Continue holding 
the control stick in the desired direction while you are 
adjusting the travel value.

2. Scroll left or right to adjust the travel value. Press the scroll 

wheel to save the selection.

Sub-Trim adjusts the servo travel center point. If X-Plus is active, 
sub-trim for X-Plus channels appears on the second screen.

 Use only small sub-trim values or you may 

cause damage to the servo.

Use the Reverse menu to reverse the channel direction, for ex-
ample, if the elevator servo moves up and it should move down.
To reverse a channel direction:

1. Scroll to Travel and press the scroll wheel. Scroll left until 

Reverse appears and press the scroll wheel again to save the 
selection.

2. Scroll to the channel you wish to reverse and press the scroll 

wheel.

 If you reverse the Throttle channel, a 

confi rmation screen appears. Select YES to reverse the 

channel. A second screen appears, reminding you to bind your 
transmitter and receiver. Failure to re-bind the transmitter and 
receiver will result in the throttle moving to full throttle if failsafe 
activates.

Always perform a control test after making 

adjustments to confi rm the model responds properly. 

After adjusting servos, always rebind the transmitter and receiver 
to set the failsafe position.

The Speed menu enables you to increase the response time on 
any individual channel such as retracts.
The Speed is adjustable in the following ranges:

•  Nor (No Delay) - 0.9s in 0.1 second increments
•  1s - 2s in 0.2 second increments
•  2s - 8s in 1 second increments

To adjust the Speed:

1. Scroll to the channel you wish to adjust and press the scroll 

wheel.

2. Scroll left or right to adjust the speed and press the scroll 

wheel to save the selection.

Automatically Installing AirWare Updates
To install the most recent AirWare update:

1. Download the update from Community.SpektrumRC.com and 

save it to the SD Card.

2. Power off the transmitter and install the SD Card in the 

transmitter.

3. Power on the transmitter and the update automatically 

installs in the transmitter.

1. Save the desired AirWare version to the SD Card.
2. Select Update Firmware in the SD Card Menu options. The 

Select File screen apepars.

3. Select the desired AirWare version from the File List. When 

updates are installing, the transmitter screen is dark. The 
orange LED Spektrum bars fl ash and the update status bar 
appears on the screen. 

NOTICE: Do not power off the transmiter when updates are 
installing. Doing so will damage the transmitter.