Graupner Hendheld RC 2.4 GHz No. of channels: 12 33124 Data Sheet

119

Control characteristics for throttle/collective pitch stick

Using the arrow keys on the left or right touch pad, page 
to the menu option "Channel 1 curve" in the multi-
function list: 

Ser vo adjustment
Stick mode

Switch display

Control adjust
Dual Rate / Expo

Channel 1 cur ve

Tap the center 

 key on the right touch pad to open 

the menu shown below:

Input
Output
Point

?

0%
0%
0%

C1

nor mal

Cur ve

Cur ve off

Since the carburetor response or the effect of collective 
pitch is often non-linear, you can make compensatory 
adjustments to these in this menu. 
The menu therefore enables you to change the control 
characteristics of the motor/collective pitch stick, 
regardless of whether this control function affects the 
servo connected to control channel 1 directly or affects 
multiple servos via various mixers.
If you have used the "Phase settings" and "Phase 
assignment" menus (see pages 128 and 134 ) to 
specify fl ight phases, this option can be adjusted per 
fl ight phase. The fl ight phase name – e. g. "normal" – is 
always shown at the bottom left of the screen.
The control curve can be defi ned by up to 6 points 
(termed "reference points" below) placed anywhere 

along the path of joystick travel. While the on-screen 
graph considerably simplifi es the process of setting and 
adjusting the reference points, we recommend that you 
set fewer reference points to begin with.
Please note that the curve characteristic you set 
here acts as the input signal for specifi c mixers in the 
"Helicopter mixers" menu (see page 164):

           

"Helicopter mixers"

 Thr

 Tail rotor

In the basic software set-up, 2 reference points – 
namely the end-points at the bottom end of joystick 
travel ("L", low = -100% travel) and the top end of 
joystick travel ("H", high = +100% travel) – defi ne a 
linear characteristic curve.
First, switch to your chosen fl ight phase, if necessary.

By moving the transmitter control (motor/collective pitch 
stick), you can reposition the vertical line in the graph 
between the two end-points "L" and "H". The current 
joystick position is also displayed in numerical form on 
the "Input" line (-100% to +100%). The point at which 
this line crosses the curve is termed the "Output", and 
can be varied at the reference points within the range 
-125% to +125%. The control signal altered in this 
way will then affect all subsequent mixer and coupling 
functions. 
In the example above, the joystick is at 0% of control 
travel and also generates an output signal of 0%, since 
the characteristic curve is linear.

Up to 4 additional reference points can be set between 
the two end-points "L" and "H", although the distance 
between neighboring reference points must not be less 
than approx. 25%.
If necessary, use the left or right arrow key 

 to drag the 

marker frame downwards, until it is at the "Point" line:

?

0%
0%
0%

Nor mal

off

Input
Output
Point

C1 Cur ve

Cur ve

Move the joystick. If a question mark can be seen in 
the frame, then you can set the next reference point 
by tapping the center 

 key on the right touch pad. 

Simultaneously, the "?" is replaced by a number and the 
value fi eld to the right of the reference point number is 
highlighted:

1

+50%
+50%

+50%

Nor mal

off

Input
Output
Point

C1 Cur ve

Cur ve

The order in which you generate the (maximum) 4 
reference points between the end-points "L" and "H" is 
irrelevant, since the reference points are continuously 
renumbered automatically from left to right as they are 
entered.