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

116 Detail program description - Control adjust

Control characteristics for throttle/spoiler joystick

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

Open this menu item by pressing the center 

 button 

in the right touch pad.

Input
Output
Point

?

0%
0%
0%

C1

nor mal

Cur ve

Cur ve off

Since the carburetor response or the effect of the 
airbrakes or spoilers 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 throttle / airbrake joystick, 
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.
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 (throttle/airbrake 
joystick), 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.

To delete one of the reference points (1 to max. 4), use 
the joystick to move the vertical line into the vicinity of 
the reference point in question. As soon as the reference 
point number and its associated value is shown on 
the "Point" line (see screen image above), you can 
activate the value fi eld on the "Point" line to highlight 
it by simultaneously tapping the 

 or  keys on