Multiplex TEK-Vario+TAS Sensor Notice D'utilisation page 11

Contents
Introduction ................................................... 11
1.
1.1 Special features ............................................. 12
1.2 Specification .................................................. 12
2. Installation ..................................................... 13
3. Using the sensor for the first time .....................15
4. Default set-up ................................................15
1. Introduction
Congratulations on your purchase of the new TEK-Vario + TAS sensor. We are delighted that you have chosen a
product from the MULTIPLEX stable.
The innovative Total Energy Compensated (TEK) vario function and the precision speed measurement (TAS) make
the TEK-Vario + TAS sensor a 'must-have' item for the serious glider / aerobatic pilot.
Total Energy Compensation now makes it possible to suppress "stick lift" (the effect of "up-stick" or "down-stick")
almost completely, making it easier and more accurate to seek and find thermal lift. Speed compensation renders
the vario signal more pleasant, as it is smoother and easier to interpret. One particular advantage is the system's
infinitely variable strength of compensation, which can be adjusted individually to suit the model and the pilot's
requirements. The compensation level can be adjusted using the MULTIPLEX Launcher program, or alternatively
from the transmitter while the model is flying, using a slider assigned to any servo channel. If the gain (sensitivity)
lead is plugged into the corresponding receiver channel at the receiver, then you can vary the compensation level
proportionally and conveniently within the range 80% to 120% by altering the servo position (-80 and +80%); it
can also be switched off completely by setting the servo position to 100%. If the gain lead is not plugged in, then
the system adopts the pre-set value selected using MULTIPLEX Launcher (default setting 100%).
The TEK-Vario + TAS sensor utilises what is known as a precision Prandtl tube as sensing element, which gives
the sensor the additional capability of registering your model's actual speed through the air (TAS - True Air Speed),
in contrast to conventional GPS-based speed measurement, which measures ground speed (the model's speed
over the ground). This means that the TEK-Vario + TAS sensor can act as an important aid in preventing your
model's airspeed falling to a dangerous level (incipient stall speed).
The Total Energy Compensation of the vario sensor is calculated from altitude, static pressure and static pressure
change. The model's speed is calculated from the ratio of ambient pressure to speed-dependent static pressure,
and the calculation also includes a factor for altitude-dependent air density above sea level. This process calcula-
tes a speed which is constantly correct regardless of the model's altitude.
The TEK vario, altitude and speed sensors feature automatic zero-calibration which is carried out when the recei-
ving system is switched on.
5. Configuration ................................................. 16
6. Problem solving .............................................. 17
7.1 Guarantee / Liability ........................................18
7.2 Conformity declaration ....................................18
7.3 Disposal .........................................................18
8. Accessories .................................................... 27
D
EN
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