Epa (Servo End Point Adjustment - All Model Types) - AIRTRONICS SD-10G Operating Manual

surface MENU
2) Install the servo horn onto the servo, making sure that the servo horn is as close to being centered
as possible. In some cases you can get the servo arm closer to being centered by rotating the servo
arm 180º and reinstalling it.
IMPORTANT It is always recommended to install the servo horn as close to being centered as
possible, prior to changing the CENT Adjustment Values. After you change the CENT Adjustment Values
to center the servo horn, only then should you manually adjust the control linkage to center the control
surface.
3) Press the Navigation Pad 3456 to highlight the CENT Adjustment
Value for the channel that you would like to change.
4) Press the YES/+ or NO/- keys to change the CENT Adjustment Value.
5) Change the desired remaining CENT Adjustment Values using the same
techniques.
CENT setting range is -150% to 150%. The default setting is 0%. Increase or decrease the CENT Adjustment Values to center
the servo horn.
The SD-10G transmitter utilizes Parallel Trim Technology. This allows you to change the CENT Adjustment Values to
center the servo horn and still maintain full servo travel (up to 150%) in each direction.
Zeroing Out Trim
Although trim switch settings are automatically stored in memory for each individual model, some users may wish to always keep
their trim switch settings at zero (centered) for all models. For example, after test-flying your model, if you have had to add trim
to make your model fly straight and level, you can use the Centering function to add that amount of trim back into the servo(s),
then move the trim switches back to center. This ensures that your trim switches are always centered.
1) After flying your model, check your model's control surfaces to see how much trim was necessary to achieve straight and
level flight.
2) From within the Surface menu, highlight the CENT Adjustment Value for the channel you need to add Centering trim to.
3) Recenter the trim switch, then change the CENT Adjustment Value until the control surface is in the same position it was prior
to recentering the trim switch.
In the default configuration, the same trim settings are stored across all Flight Modes. This option can be changed to
allow you to store different trim settings for each individual Flight Mode. For more information, see page 89.

Epa (SERvO EnD pOinT aDjUSTMEnT - aLL MODEL TYpES)

The End Point Adjustment function allows you to adjust servo travel in each direction. This makes it possible to balance control
surface throw in both directions. For example, if you want your elevator to move Up and Down two inches in each direction, but
the elevator moves Down more than two inches, decrease the End Point Adjustment in the Down direction, so that the elevator
moves Up and Down the same amount. Another example is with ailerons. If your aircraft rolls faster to the right than to the left,
increase the End Point Adjustment in the Left direction until the aircraft rolls the same speed in both directions.
IMPORTANT End Point Adjustment is not the same as Limits and should not be used in the same manner as Limits.
Whereas Limits will Limit the maximum servo travel in either direction, End Point Adjustment does not. End Point Adjustment
is designed to balance the control throw on both sides of servo travel and can be overridden by other settings, such as Dual
Rate. For example, if you have your End Point Adjustment set to 100%, and you set your Dual Rate to 150%, the servo will
travel more than 100% when Dual Rate is ON, however, if you have your Limits set to 100%, the servo will travel only 100%,
regardless of the End Point Adjustment setting or the Dual Rate setting.
When changing End Point Adjustments for HELI Model Types that use CCPM, changing the End Point Adjustment value on
one channel, for example, pitch, affects all the cyclic servos (due to CCPM). If you need to make End Point Adjustments to
individual servos without affecting the other cyclic servos, use the CEPA function. For more information, see page 67.
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