Spektrum DX18 SPM18000 User Manual

SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL

Mixing allows control input for a channel to affect more than one 
channel at a time. Mixing functions support: 

•  Mixing a channel to another channel. 
•  Mixing a channel to itself. 
•  Assigning offset to a channel 
•  Linking primary to secondary trim. 

These mixes are available for each model memory: 
16 programmable mixes 

Select a channel for master and slave. Inputs for the mas-
ter channel control both the master and slave channels. For 
example Elevator to Flap makes elevator the master channel and 
fl ap the slave channel. 

Change the offset value to move the effective center position 
of the slave channel. Positive or negative value determines the 
direction of the offset. Offset is not available for curve mixes. 

If the master channel trim should also adjust the slave channel, 
set Trim to Act. A channel monitor on the left side of the screen 
shows how channels respond to input. To view a switch-as-
signed mix on the monitor, the mix switch must be in the active 
position. 

If you wish to assign a mix to a switch position:
1. Scroll to Switch and press the scroll wheel.
2. Scroll left or right to the switch you wish to use and press 

the scroll wheel to save the selection.

3. Scroll to the switch position where you want the mix to be 

active. 

The mix is Active when the box is fi lled and Inactive when the 
box is open. You can assign a mix to be active in multiple switch 
positions (0,1 or 2).

 Always do a Control Test of your model 

after changing mixes. 

Combination Mixing is available to create OR mixing where you 
can assign 2 conditions and the mix activates if either condition 
occurs. You can also create AND mixing where 2 conditions 
must occur to activate the mix. 
To program Combination Mixing:

1. Activate a mix.
2. Select Combo Sw. in the Switch Selection. The Combo 

screen appears.

3. Select the desired switch and active switch position for 

Switch 1.The mix is Active when the switch position box is 
fi lled.

4. Select the Relation (AND, OR)
5. Select the desired switch and active switch position for 

Switch 2.The mix is Active when the switch position box is 
fi lled.

6. Press the BACK button to save the Combination Mix.

The Master (left side) names are inputs. For example, “Aileron” 
refers to the Aileron Stick. The Slave (right side) name is the 
name of the channel receiving the mix command when the 
Master channel moves.

Back Mixing applies a mix to all related servos in a wing or tail 
type. For example, if you select 2 AIL, 2FLAP in the Aircraft Type 
screen, a mix to one aileron channel affects both aileron servos.
The mix response, however, depends on the aileron channel 
included in the mix.
A Back Mix also enables you to use fewer mixes to achieve the 
desired response, for example adding roll to a split elevator.

• Cyclic to Throttle (HELI)
• Swashplate (HELI) 

• Elevator to Flap (ACRO)
• Aileron to Rudder (ACRO)
• Rudder to Aileron/Elevator 

(ACRO). 

• Aileron>Rudder (SAIL) 
• Aileron>Flap (SAIL)
• Elevator>Flap (SAIL)
• Flap>Elevator (SAIL)