Garmin G3X Installation Manual page 681

Table 32-7 Pitch Servo Autopilot Configuration Settings
Configuration Setting
Trim Motor Direction
(configuration mode only)
Trim Motor Max Run
Time (configuration mode
only)
Auto Trim Motor Speed
Fine Adjust Amount
(expert setting)
Fine Adjust Time
(expert setting)
190-01115-01 G3X/G3X Touch Install Manual - GDU 45X/46X Config and Post Install Checkout
Rev. AA
The GSA 28 servo has a configurable trim motor direction. Select Normal
or Reversed setting depending on which is required for proper trim motor
movement when using aircraft trim motor switches on the ground with the
autopilot disengaged (servos powered).
The GSA 28 servos can limit the maximum continuous run time of the trim
motor to help prevent the potential for a trim runaway situation. The Trim
Motor Run Max Time setting is the maximum amount of time the trim servo
will run continuously when a manual electric trim input is detected. If the
maximum time is exceeded, the pilot must release the Manual Electric Trim
(MET) control and then reassert it to continue running trim.
The GSA 28 pitch servo has the ability to drive the auxiliary trim motor at
various speeds.
The Auto Trim Motor Speed should be set so the auxiliary trim motor will
move as slowly as possible. The slowest possible movement will ensure
that there is no noticeable aircraft response when the auxiliary trim motor is
run during auto-trim.
The Auto Trim Motor Speed can be adjusted in percent from 5 to 100 in
steps of 5.
The GSA 28 pitch servo is capable of making very small adjustments to
fine tune the elevator position. The Fine Adjust Amount is the amount in
which these adjustments are made.
Fine Adjust Amount is an expert level setting, and should generally be not
be changed by the installer, the default value is 0.
If the installer notices the aircraft doing very small oscillations, the Fine
Adjust Time and Fine Adjust Amount can be used to correct this.
The GSA 28 pitch servo is capable of making very small adjustments to
fine tune the elevator position. The Fine Adjust Time is the rate in which
these adjustments are made in seconds.
Fine Adjust Time is an expert level setting, and should generally be not be
changed by the installer, the default value is 0.20.
If the installer notices the aircraft doing very small oscillations, the Fine
Adjust Time and Fine Adjust Amount can be used to correct this.
Description
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