Operation Manual True Air Speed Vario Sensor

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 ight 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 conrm readiness.

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 conrmed 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.

3. Using the sensor for the rst time

4. Default set-up

The True Airspeed + Vario sensor is delivered with

the following factory default settings:

Airspeed address 5

Airspeed max. address off

Airspeed max. alarm off

Airspeed min. alarm (stall-warning) off

Airspeed min. alarm erase < 10 km/hr

If you wish to change any of the default settings,

you will need to re-congure the sensor.

In this case please continue with the chapter en-

titled “Conguration”.

Altitude address 6

Altitude max. address off

Altitude alarm min. off

Altitude alarm max. off

Vario address 7

Vario address max. climb off

Vario alarm, descent rate ... m/s off

Vario integration 1 s

Vario inherent rate of descent off