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XF631 MANUAL • CHAPTER 7: Functions (Function Mode)
CHAPTER 7: Functions (Function Mode) continued
Accessing the Sub-Trim Function
Sub-trim is an electronic trim that is available for
each of the 6 channels. Sub-trim is particularly useful
as it allows the digital trim levers to be returned to
their neutral positions by adjusting /changing the
servo’s neutral position electronically, without the
need to mechanically adjust the specific control
linkage. This allows the same digital trim lever
settings between the two models you can control
with this radio system. Sub-trim can also allow
additional trim travel when digital trims do not
provide enough movement.
Note: It is recommended to use as little sub-trim
as possible for adjustment. If more that 20–30
points are required, is it suggested that a
mechanical linkage adjustment be performed.
Note: Prior to making final subtrim adjustments,
please check to make sure that the digital trim
values for aileron, elevator, and rudder are set to
the neutral position. Throttle trim value should
be set to the -40 position.
1. Turn on the transmitter.
2. Press the Scroll and Increase buttons up
simultaneously to enter the Function mode.
3. Press the Scroll button until “SB-TRIM” appears on
the screen.
4. Press the Channel button until the desired
channel appears on the screen.
5. Press the Increase or Decrease button to establish
the desired amount of sub-trim.
6. Press the Scroll button to access the travel
adjustment function.
7. To exit, press the Scroll and Increase buttons up
simultaneously.
SUB-TRIM
•
Function Mode
7.3
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