TruTrak Digiflight II Operating Manual - Manual (Page 15)

14
The next screen in the setup
procedure is the static lag setup
screen. This setting should only
be changed if autopilot tends to
oscillate in pitch during altitude
hold, due to lag in the static
system. The display will show:
Rotating the encoder knob
will change the number as in
previous setup screens. Having
selected the desired value, press
the ALT button to advance to
the next setup screen. The next
screen will show:
As before in the lateral
setup mode, the micro activity
setting in most aircraft will be
left at zero (0). Micro activity
is used only in aircraft in which
a slow oscillation has been
observed while in altitude hold,
in very still air. Sometimes
there will be a small amount of
lost motion in an aircrafts
control system, and the micro
activity setting is a way to
compensate for the lost motion.
Press and release the ALT
button to advance to the final
setup screen.
This setting in most cases
will not need to be changed. If
the half step setting is set to Y
(yes), then the pitch servo will
now have higher resolution, and
take smaller steps. While this
setting will make the servo take
smaller steps, it will decrease
the amount of available torque.
This setting should be left at N
(No), unless it is observed that
the nose moves up and down
very slightly while in altitude
hold in very still air. Press and
release the knob and the display
will return to normal flight
screen.
Contrast Adjustment
The Digiflight II contrast
should only be adjusted while
on the ground. To enter the
contrast adjust mode, with the
autopilot powered off, push and
hold the encoder knob in. Turn
on the power to the autopilot,
and after 1 second release the
knob. The display will show
the current contrast setting.
Rotate the knob to select
the desired contrast ratio.
Repeat for MIN light setting.
Too low a number and the
words will fade out on the
display, and too high a number
the background will become
dark, and the text unreadable.
To exit, press and release the
encoder knob.