Programming The Factors; Programming, Transmitter With Proportional Controls - GRAUPNER 33575 Operating Instructions Manual

Note: the standard P and D values should cause the gyros to correct the model's attitude quickly when
it is upset by an outside influence, without causing oscillation, but in practice the optimum values for a
particular model can only be found by flight-testing. If the model displays little or no automatic stabilisation
with the default settings, the value should be raised; on the other hand, if the model oscillates (wave-like
movements in flight), the value should be reduced.
If your transmitter has spare proportional controls, you can use them to adjust the values while the
model is flying.
Some transmitters allow the corrective factors to be altered during a flight using the proportional controls,
whereas others allow fixed values only.

4.2 Programming the factors

4.2.1 Programming, transmitter with proportional controls

If your HoTT transmitter is equipped with proportional controls, it is also possible to adjust the P and
D factors for each axis during a flight: what you might call 'flying the settings'. You need to assign
proportional controls (e.g. the sliders on the mc-20) to any channel in the range 5 to 16 (in this example
channel 9); now you can alter the P factor (and the D factor) using these controls. In each case the
current values are shown in brackets.
Procedure, using the ailerons as an example:
GYRO SETTINGS
>AILERON:
>ELEVATOR:
>RUDDER:
COEFF.:
COEFF. D:
button < or the right button >. This frees up the channel previously occupied by the proportional
control, so that it can be used for some other purpose, e.g. for elevator or rudder.
• Move on to elevator and / or rudder, and select the channel and factor (you can either select the
same channel, in order to alter all the axes simultaneously, or different channels, allowing you to
program the axes individually).
• Move the cursor to the Factor line, where you can also change the P factor for aileron, elevator
and rudder with priority (adjustment range up to 200%).
• Move the cursor to the D factor line, where you can alter the D factor for aileron, elevator and
rudder with priority using a proportional control (adjustment range up to 200%; channel value
-100% equates to a factor of 0%, channel value 0% equates to 100%, and +100% equates to
200%). This makes it a very easy matter to match the gyro's corrective effect to the model's
airspeed. In particular, higher gyro gain can be used for the landing approach - without the need
to switch flight phases.
• Now test-fly your model and fine-tune the values one by one until your preferred stabilising effect
is achieved without the model oscillating.
• It may be sensible or easier to activate the gyro for one axis only at first, and then to establish the
optimum setting for that axis, rather than for several axes simultaneously.
Manual Receiver GR-12+ 3xG Graupner HoTT 2.4
• Move the cursor to the appropriate line, in this case "Ail" for
< >
aileron.
(2)K9
• Press the SET button to activate the Channel field.
(3)K8
• Select the appropriate channel, and save the setting with
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pressing the SET button again
(44%)K10
• move the corresponding proportional control to alter the factor
(140%)K11
(adjustment range 0 - 10; 0 means no gyro correction for that
axis).
• You can also adopt this factor directly by pressing the left
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