Spektrum SPM20310 DX3.0 - Manual (Page 29)

The DX3.0’s electronic Throttle Trim lever, located to the left of the steering wheel, allows the
center position of the servo to be manipulated in either direction to achieve precise centering
of the throttle trigger neutral position. Throttle End-Point adjustment values (page 23) remain
completely independent from the throttle trim, unless the trim value exceeds the selected
end-point values. (For example: If the trim value is set at 40 and the end-point values at 30,
Throttle Trim will override/alter the end-point value.)
To adjust the Throttle Trim servo position, move the electronic steering trim lever either up
(+) or down (-). As soon as the trim is moved, the “THC” Throttle Trim screen will appear and
will continue to be displayed unless the trim lever is untouched for a period of two seconds.
To reset the trim value to zero, press the INCREASE and DECREASE keys at the same time
while the “THC” screen is displayed.
Throttle Trim
(THC)
Values: L/F 60 0 R/B 60
TRIM
THC
0
Current value
Decrease
Increase
Throttle T
rim
Throttle Trim Location
Each click will provide 0.3° of trim to the throttle servo with a maximum of 24° allowed.
Note: Each click will not always result in a change of the value displayed.