GRAUPNER mc-16 Programming Manual page 134

Channel 1 curve
Control characteristics for throttle/spoiler stick
This option is available on both transmit-
mc
ter types.
16 20
Use the selection keys of the left or right
 
four-way button to scroll to the »Channel 1
curve« menu option in the Multi-function menu:
Ser vo adjustment
Stick mode
Control adjust
Dual Rate / Expo
Channel 1 cur ve
Switch display
Open this menu option with a tap on the centre
key of the right four-way button:
Ch1 cur ve
Cur ve off
Input 0%
Output 0%
Point ? 0%
normal
Since the carburettor 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 stick, regard-
less of whether this control function affects the servo
connected to control channel 1 directly or affects multi-
ple servos via various mixers.
If flight phases have been specified in the »Phase set-
tings« and »Phase assignment« menus (see pages
148 and 154) this option can be adapted on a flight-
phase basis. The given flight phase name, e. g. «nor-
mal», will be shown at the bottom left of the screen.
134 Program description - Channel 1 curve | Winged models
The control curve can be defined by up to 6 points
(termed "reference points" below) placed anywhere
along the path of stick travel.
While the on-screen graph considerably simplifies 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 – name-
ly the end-points at the bottom end of stick travel ("L",
low = -100 % travel) and the top end of stick travel ("H",
high = +100 % travel) – define a linear characteristic
curve.
First, switch to your chosen flight phase, if necessary.
SET
Setting reference points
By moving the transmitter control (throttle/airbrake
stick), you can reposition the vertical line in the graph
between the two end-points "L" and "H".
The current stick 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 "Out-
put", 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 stick 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-hand arrow button 
to move the marker frame down to the "Point" line:
Ch1 cur ve
Cur ve off
Input 0%
Output 0%
Point ? 0%
nor mal
Move the stick. If a question mark can be seen in the
"Point" frame, then the next reference point can be set
with a tap on the centre SET key of the right four-way
button. Simultaneously, the "?" is replaced by a number
and the value field to the right of the reference point
number will be shown in inverse video.
Ch1 cur ve
Cur ve off
Input +50%
+50%
Output
Point 1 +50%
nor mal
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.
Erasing reference points
To delete one of the reference points (1 to max. 4), use
the stick to move the vertical line into the vici nity of the
reference point in question. As soon as the reference
point number and the associated value are superim-
posed in the "Point" line, you can activate the Value
field by pressing the central SET button of the right-
hand four-way button, then erase it by simultaneously
pressing the  or  buttons of the right-hand
four-way button (CLEAR). A brief press of the central
SET button of the left-hand four-way button or the
ESC button concludes the procedure.