TruTrak Sorcerer - Manual (Page 17)

17
Altitude Select with AP Off
A target altitude can be set prior to take-off while still on the ground.
As with the AP on, pressing SEL will display the SEL ALT setup
screen. The procedure is to select the desired altitude and then press
enter. NOTE: The Barometer must be set prior to attempting to
enter the altitude select screen.
The display will show the selected altitude even though the autopilot
is still off. This will serve as a reminder that the autopilot will climb to
the selected altitude when engaged. It will not climb at a selected
airspeed, but will default to a vertical speed of 500 fpm. The rate of
climb can be adjusted with the vertical speed rocker.
Gyro Set
When the initializing has been done correctly the gyros should
already be centered at the time of take off. To perform a manual gyro set,
press and hold the knob with the system disengaged. Hold the knob for
approximately 40 seconds. The display will show GYRO SET while the
knob is held in. This should only be done with the aircraft stationary!
This procedure is not necessary for normal flight and should only be
performed when advised by the factory to do so.
Engaging the Autopilot
Since the autopilot synchronizes to vertical speed, be sure that you
can maintain the rate of climb when the AP is engaged. Otherwise
airspeed will diminish as the aircraft attempts to sustain vertical speed.
As airspeed diminishes to the pre-set minimum it will hold this value and
thus prevent a stall.
When aircraft vertical speed is approximately less than 400 feet
per minute, the autopilot will initially select zero vertical speed. The
vertical speed rocker can be used to change the initial value if desired.
Setting Pitch Trim
The pitch servo contains a torque sensor that sends a signal to the
controller when the up or down force applied on the servo gearbox is
greater than a threshold value. When this signal indicates an out-of-trim