
LX Zeus v 3.4.3
10.9.2014
- 45 -
2.2.6.3
AHRS Level adjust (Pitch and Roll)
If the AHRS is not aligned with the glider, then it has to be
adjusted.
Changes in pitch are caused by changes of aircraft mass
and changes of airspeed. This reference pitch
corresponds to one airspeed (indicated airspeed actually)
and one aircraft mass. When the glider flies faster or
slower, or if the glider is heavier or lighter, then the pitch
angle deviates from the reference.
Adjustment procedure is:
The internal reference level of Zeus instrument is
most likely to be different. So you need to adjust
it. On the ground, put your aircraft in the position,
which you think that matches the position for the
reference airspeed. (Do not worry, if this is slightly
wrong.) Adjust the Zeus to this level after press on
button….
Make a test flight with your aircraft. Aircraft should
be as close to the reference mass as possible. Fly
at the reference airspeed and observe the pitch
indicated by Zeus. Record this pitch on paper.
This observed pitch is the error, which needs to be
corrected.
Repeat the Zeus level adjustment, but now put
your airplane in such position (lift or lower nose or
tail wheel), that pitch on Zeus indicates the same
angle as you have observed during your previous
flight. Be careful, to keep wings level. This is now
your reference position.
Keep this position of aircraft (do not move it) and
adjust Zeus to be perfectly levelled.
Instrument procedure:
Go to SETUP / SERVICE / Level adjust
When the glider is in position to be calibrated
press on screen button
adjust
(VARIO/FLARM)
Wait until status bar reach 100 %
A significant message SUCCESS will appear
If you are satisfied with new settings, then press
screen button
save
(STAT/EVENT)
A message Parameters saved will appear