TruTrak Digiflight Operation Manual - Manual (Page 11)

10
fast trim it will be necessary to
tap or pulse the trim button so
that it will be slow enough to
turn it off before going too far.
When a reversal takes place, a
slight tap in the opposite
direction may be required to get
the bars to stay off. Finally
when the bars have been made
to disappear and there has been
no speed change, the bars can
be ignored if they reappear in
that it is known the aircraft is
close to being in trim.
Gyro Set
When the initializing has
been done correctly, the gyros
should already be centered at
the time of take off. If
confirmation of this is desired,
with the aircraft stationary on
the runway and the autopilot
disengaged, pressing and
holding the encoder knob will
put the gyros in the fast
centering mode. The knob
should be depressed for
approximately 7 seconds during
which time the words
GYRO SET
will be displayed.
Power Loss
Power Loss
If there is a momentary
loss of electrical power, the
autopilot will disengage. The
autopilot gyros must now be
manually re-initialized using
the
GYRO SET
operation.
Manually fly the aircraft in a
straight line as steadily as
possible, while holding in the
knob for at least ten seconds
after the words
GYRO SET
appear in the display. After
approximately ten seconds have
elapsed, release the knob. The
autopilot may now be re-
engaged, and any residual gyro
offset will be slaved away
automatically.
Digiflight Setup Procedure
The setup consists of
setting activity, torque, serial
baud rate, and magnetometer
calibration. To enter the setup
mode, the autopilot must first be
engaged, then press and hold
the encoder knob for
approximately 8 seconds, until
the first setup screen appears.
The first setup screen shows
current values for the activity
and torque of the aileron servo,
with an underline under the
present setting of activity. A
typical screen might show
The underlined numb er is
set by rotating the encoder
knob. Turn this knob to set the
activity level to the desired
value for the particular aircraft.
MAG*180
GYRO SET
LAT ACTIVITY 8
LAT TORQUE 200