TruTrak Digiflight II Operating Manual - Manual (Page 12)

11
Digiflight Setup Procedure
The setup consists of
setting activity, torque, serial
baud rate, bank angle setting,
micro activity, minimum
airspeed, maximum airspeed
and static lag. To enter the
lateral setup mode, press and
hold the MODE button for
approximately 3 seconds, until
the first setup screen appears.
The first setup screen shows the
current value for the activity of
the aileron servo, with an
underline under the present
setting of activity. A typical
screen might show:
The underlined number is
set by rotating the encoder
knob. Turn this knob to set the
activity level to the desired
value for the particular aircraft.
Any value between 0 and 36
may be chosen. In this example,
the value of 3 will be selected.
Activity should be set so as to
not be excessive in turbulence
and yet sufficient to fly without
hunting in still air. (Any lost
motion or play between the
servo and the control surface
can cause hunting in still air).
Once activity is set to the
desired value, press and release
the ALT button to advance to
the next setup screen.
In a manner similar to
activity, use the encoder knob to
select the desired value of roll
servo torque. This value should
be between 7 and 12. A default
value is set at the factory but
may need to be modified to suit
a particular aircraft. The value
chosen should be sufficient to
fly the aircraft, but not so much
that it is difficult to override the
autopilot if necessary.
Having selected the desired
torque level, again press and
release the ALT button to
advance to the next setup
screen. The unit will now show
the next screen:
The value shown represents
the speed of the primary RS-
232 interface to the external
GPS unit. By default at the
factory it is set to 9600 baud.
However, it may be set to any
of 600, 1200, 2400, 4800, or
9600 baud. Consult the manual
for the GPS unit and follow its
setup instructions to determine
its setting and set the baud rate
of the autopilot to the same
value. The autopilot will
recognize NMEA-0183 protocol