Spektrum BEAST X AR7210BX Mode D'emploi page 53

If the helicopter is not aligned horizontally as desired with active SAFE
to one side in hovering, the artificial horizon can be readjusted. This is done at Parameter
Menu Point A which also serves as servo trim function. If you activate SAFE
at Parameter Menu Point A via the transmitter's SAFE
trimming of the horizon instead of trimming the servos. By moving the aileron or elevator
stick the roll and pitch tilt of the horizon can be increased/decreased. Briefly touching the
appropriate stick will trim the horizon stepwise by 0.5 degrees to the specific direction.
Touching the stick repeatedly or holding it for longer time will trim the horizon by several
steps. The Status-LED indicates the trim values: when it lights in blue color both angles are
0 degrees resp. they are in the factory setting. If the Status-LED lights red one or both angles
are adjusted slightly. If the Status-LED is purple, then one axis is trimmed by more than 5.0
degrees. When the status LED goes out, one of the two axes is further trimmed than 10.0
degrees, which is the limit for each axis! By moving the rudder stick you can remove the trimm
that has been set since entering this menu point. Place the helicopter in horizontal position
and you should be able to see the effect of trimming. Note that the helicopter usually is slightly
tilted to the side in hovering flight due to the drag of the tail rotor. Therefore as a starting
point it is recommended to trim about 5 degrees to the right when using a helicopter with
clockwise turning main rotor. Also note that SAFE
position of the helicopter. Depending on wind and environmental conditions it may happen
that the helicopter drifts slightly into a certain direction during hovering flight. Also long-
lasting vibration or fluctuations in temperature can cause the helicopter not always comply
exactly the same attitude. Therefore, only trim in moderate steps and only when the helicopter
reproducible drifts to the same direction!
Parameter Menu Point A is used to adjust two different things: Trimming the servo center
positions and trimming the SAFE
technology is activated or not, either the artificial horizon or the servo center positions can
be trimmed. The Status LED provides information on the currently active trim mode. If the
Status-LED is lit permanently, the servo center positions are trimmed. If the Status-LED
flashes, SAFE technology is turned on and the artificial horizon can be trimmed.
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When using SAFE technology in "Flight trainer mode," the tilt angle directly depends on the
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transmitter's signal length and therefore varies depending on the transmitter type. You can
fine tune the maximum angle by simply increasing or reducing the maximum deflection of
your control stick(s) in the transmitter by using the Dual Rate function. You could even switch
between different angles in flight. Also you can adjust the maximum tilt angle by using the
StudioX software and the optional USB2SYS (SPMA3030 or BTXA76007) interface.
technology channel, you switch to
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technology cannot recognize the absolute
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technology horizon. Depending on whether SAFE
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technology, i.e drifts
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technology
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