User's Manual

14
Manual Receiver GR-12+ 3xG Graupner HoTT 2. 4
4.2.2. Programming, transmitter without proportional controls
• Move the cursor to the appropriate line, in this case “Ail” for
aileron.
• Press the SET button to activate the Channel  eld, select the
appropriate value (1 - 10 of OFF), then press the SET button
to save it.
• First select a low value (see P factor section for starting points)
and carry out a test- ight. If gyro stabilisation is not
suf ciently pronounced, increase the value step by step
until the level of correction is as required; if the model
already oscillates, reduce the value step by step.
• Do not select a channel (Ch5 - Ch16); this function is only relevant to transmitters with proportional
controls.
• Move on to elevator or rudder and select the desired value (or OFF).
• Leave the settings for “Factor” and “Factor D” at OFF.
• It may be sensible or easier to activate the gyro for one axis only at  rst, and then to establish the
optimum setting for that axis, rather than for several axes simultaneously.
Once you have found the optimum settings, you can set up a transmitter switch to control the gyro, i.e.
for switching between gain settings. For example, you could assign a three-position switch to “Factor”
and “Factor D”, and then use it to switch the values between 0% (OFF), 100% and 200%.
Flight phase speci c settings
It is possible to use a channel to control the factor value by setting up  ight phase speci c transmitter
control settings, but only if the transmitter is an MX20 / MC20 or MC32; please see the instructions
supplied with your transmitter and refer to the “Transmitter control settings” and “Flight phase settings”
menu points for more information.
4.3 Initialising the gyro
After switching on the model of the gyroscope is immediately active but not yet initialized. To initialize it,
you keep your model when switching quiet and straight in level  ight - the best place it on the  at ground
or a  at table. After about 2 seconds, the ailerons move up and down just once. This “wiggle” signaled
the successful initialization, the end of the calibration, only then the model may be moved again.
All sticks are to be kept strictly in neutral!
WARNING: during the initialisation phase the gyro detects the model’s neutral attitude, and for
this reason it is absolutely essential to leave the model in its ‘normal  ight attitude’ during the
activation phase, and avoid moving it! If you neglect this, the gyro may detect an incorrect  ight
attitude, with the result that the model will not  y as you expect it to. It may be dif cult to control,
and could even crash!
During the initialisation phase the receiver also detects the centre points of the individual control
channels; this information is used for gyro suppression. Gyro suppression reduces the stabilising
action progressively as the transmitter controls are de ected away from centre; at +/- 100% the
gyro is completely disabled.
Your model is now ready to  y .. !
GYRO SETTINGS < >
>AILERON:
>ELEVATOR:
>RUDDER:
COEFF.:
COEFF. D:
2
4
6
Aus
Aus