Spektrum AR20410T Manual page 13

Basic AS3X+ Setup (Synapse Sensor Required)
1.
Make sure your airplane is set up for flying (reversing, travel, subtrims, etc).
Run through the First Time setup in forward programming and assign a
channel for adjusting the gain such as the rotary knob or slider.
2.
Before flying, gyro response direction can be verified using the Gyro Response
Test menu (Gyro Settings > System Setup > Utilities > Gyro Response Test).
3.
Use the gain channel to adjust gain in flight and evaluate the gyro response.
Gain should be tuned while flying near or at max speed.
a. In most cases, the pilot will be able to find a gain value that offers
improved performance without additional tuning of individual settings.
b. Due to the addition of the new parameter Stop Lock Rate delaying gain
return from centering the stick, the gain might end up too high without
the pilot noticing. This is more likely to happen on a calm day because
turbulence from wind will induce ocillations which will highlight when the
gain is too high.
i. The preferred method of addressing this is to temporarily increase
Stop Lock Rate to 100% for all 3 axes. Then stick inputs can be used
to evaluate the current gain. This will ensure having full or closer to
full gain the moment the stick is released. Start with low gain and
work up. If the model continuously oscillates/bounces more than
once, then the AS3X+ gain is too high and needs to be reduced (One
or two bounces are acceptable). Once the gain is set, the Stop Lock
Rate can be reset back to defaults to remove any small oscillations.
ii. Another method of testing the gain which is quicker but less effective,
is to leave the Stop Lock Rate at defaults. Then, use short/quick stick
inputs, returning quickly to center, to induce movement in the model.
Due to these delays, short/quick inputs will reduce gain much less,
and will allow the model to stop more with the gyro as opposed to
naturally.
3.
If any movement other than Roll starts experiencing oscillations as gain
is increased, Pitch and Yaw can be reduced in Gyro Settings>AS3X+
Settings>AS3X+ Gain.
4.
If the gain channel is all the way up and no oscillations can be induced in the
model, the multiplier can be increased in Gyro Settings>AS3X+ Settings.
Conversely. If the gain channel is barely increased and oscillations
are observed, the gain multiplier should be decreased to provide a wider
window of adjustment.
5.
Once the preferred flight performance is achieved, use the Capture gain
settings feature (Gyro Settings > AS3X+ Settings > Capture Gyro Gains) This
page will preview where your gain will be at once captured. Use this to lock
the gains in this position. Once the Capture Gyro Gains selection has been
used any adjustable gains selections in that flight mode will be defaulted
back to fixed. The selected gyro gain switch is changed to inactive, and the
model can be flown as normal. Or, you can move on to the Advanced Tuning
for more refined options
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