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The Sub-Trim function of the DX3 is an electronic trimming feature that allows the neutral
position of the servo on the steering, throttle or third channel (optional) to be moved, while
allowing the electronic trim lever for that channel to remain in the center position. This
feature is very useful as it allows the servo arm/wheel position to be moved to help with
control linkage installation, eliminating the need to make mechanical linkage adjustments.
Although the Sub-Trim function is a very useful feature, it is suggested that only
small amounts of sub-trim be used so that no unwanted, non-equal servo travel is
created. It’s suggested that less than 30 points of sub-trim be used during adjustment.
If more than 30 points of sub-trim are required, it’s suggested that a mechanical linkage
adjustment be performed.
Accessing the Sub-Trim Function
To access the Sub-Trim function, follow the steps below:
Press the MODE key until
SB-TRM appears on the screen
Press the CHANNEL key to
select the desired channel to be
adjusted
ST = Steering
TH = Throttle
FN3 = Channel 3 (optional)
Press the INCREASE or
DECREASE keys to achieve the
desired sub-trim value
1. Turn on the transmitter power switch.
2. Press the MODE key to enter the Function Mode.
3. Press the MODE key until SB-TRIM appears in small letters to the left of the screen.
4. Press the CHANNEL key to select the channel to be adjusted (ST= Steering, TH=
Throttle, FN3= Channel 3).
5. Press the INCREASE or DECREASE keys until the proper servo position is achieved.
6. Press the MODE key to access the Servo Reversing function.
7. To exit the Function Mode, either turn off the transmitter power switch or press the
MODE and CHANNEL keys at the same time.
Sub-Trim
(Function Mode)
st
0
SB-TRM
Indicates curent channel:
ST = Steering
TH = Throttle
FN3 = Channel 3 (optional)
Indicates current value
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