3. Using the sensor for the first time
Once you have installed the Prandtl tube and
completed the various connections (silicone tubes
and sensor lead), your True Airspeed + Vario
sensor is ready to use.
· First switch your transmitter on.
· Switch your receiver on (e.g. connect the flight batte-
ry, speed controller ...).
· After a brief period the vario will display the rate of
descent / climb and the current altitude.
· The True Airspeed sensor now carries out an
automatic calibration process. This is indicated by
a display of "-/- km/h" on the transmitter screen.
When calibration is complete, the screen displays "0
km/h" to confirm readiness.
4. Default set-up
The True Airspeed + Vario sensor is delivered with
the following factory default settings:
Airspeed address
Airspeed max. address
Airspeed max. alarm
Airspeed min. alarm (stall-warning)
Airspeed min. alarm erase
If you wish to change any of the default settings,
you will need to re-configure the sensor.
In this case please continue with the chapter en-
titled "Configuration".
Please note:
The Prandtl tube should not be subjected to moving
air during the automatic calibration process on the
ground, i.e. there should be zero wind. If calibration
is not confirmed after ten seconds or more, switch
the receiver off and on again, and this time hold a
cloth or your hand in front of the Prandtl tube for the
duration of the calibration process to protect it from
air movements.
· Once calibration is complete, the sensor is ready for
use.
5
Altitude address
off
Altitude max. address
off
Altitude alarm min.
off
Altitude alarm max.
< 10 km/hr
Vario address
Vario address max. climb
Vario alarm, descent rate ... m/s
Vario integration
Vario inherent rate of descent
GB
6
off
off
off
7
off
off
1 s
off
15