Sub-Trim - FUTABA 7CAP Instruction Manual

SUB-TRIM: makes small changes or corrections to the neutral position of each servo. Range is -120 to +120, with 0 setting,
the default, being no SUB-TRIM.
The recommended procedure is as follows:
•
measure and record the desired surface position;
zero out both the trims (TRIM RESETmenu) and the SUB-TRIMs (this menu);
•
•
mount servo arms and linkages so that the control surface' s neutral is as correct as possible; and
• use a small amount of SUB-TRIM to make fine corrections.
GOAL of EXAMPLE:
Adjust the flap servo's SUB-TRIM until
its center exactly matches the aileron
servo's center, as they are to work
together as flaperons.
Where next?
We recommend that you center the digital trims before making SUB-TRIM
changes, and that you try to keep all of the SUB-TRIM values as small as
possible. Otherwise, when the SUB-TRIMs are large values, the servo's
range of travel is restricted on one side.
STEPS:
Open BASIC menu, then open

SUB-TRIM.

Choose the channel to adjust, and
adjust until surfaces match. (Ex: flap)
Repeat for other channels.
Close.
Adjust trim steps: see p. 39.
Adjust END POINTs: see p. 32.
Set up dual/triple rates and exponential (D/R,EXP): see p. 34.
40
INPUTS:
for 1 second.
ADVANCE,
(If
to SUB-TRIM.
as needed. to each channel,
as needed.
again.)