190-01115-01 G3X/G3X Touch Install Manual - GDU 4XX Config and Post Install Checkout
Rev. AC Page 34-104
Trim Configuration
The installer must make the following trim configuration selections when setting up the GSA 28 based
autopilot system. These selections are made in configuration mode on the PFD under the AP tab and the
Trim Speed setup screen in the autopilot setup menu in normal mode.
Figure 34-35 Trim Configuration Page
Table 34-13 Trim Configuration Settings
Configuration Setting Description
Airspeed Threshold
The GSA 28 servos are capable of airspeed scheduling the aircraft’s manual
electric trim.
The Airspeed Threshold Fastest Movement setting is the airspeed in which
the trim motor will be moved at its fastest setting. This should be the lower
of the two airspeeds.
The Airspeed Threshold Slowest Movement setting is the airspeed in which
the trim motor will be moved at its slowest setting. This should be the higher
of the two airspeeds.
Roll Trim Motor Speed
The GSA 28 roll servo will control the aileron trim on the aircraft.
The Roll Trim Motor Speed percentage for the Fastest Movement is the
speed in which the roll servo will run the auxiliary trim motor when at or
below the corresponding airspeed.
The Roll Trim Motor Speed percentage for the Slowest Movement is the
speed in which the roll servo will run the auxiliary trim motor when at or
above the corresponding airspeed.
Pitch Trim Motor Speed
The GSA 28 pitch servo will control the elevator trim on the aircraft.
The Pitch Trim Motor Speed percentage for the Fastest Movement is the
speed in which the pitch servo will run the auxiliary trim motor when at or
below the corresponding airspeed.
The Pitch Trim Motor Speed percentage for the Slowest Movement is the
speed in which the pitch servo will run the auxiliary trim motor when at or
above the corresponding airspeed.
Yaw Trim Motor Speed
The GSA 28 yaw servo will control the rudder trim on the aircraft.
The Yaw Trim Motor Speed percentage for the Fastest Movement is the
speed in which the roll servo will run the auxiliary trim motor when at or
below the corresponding airspeed.
The Yaw Trim Motor Speed percentage for the Slowest Movement is the
speed in which the roll servo will run the auxiliary trim motor when at or
above the corresponding airspeed.
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