GRAUPNER MC-22S, Programming Manual

Page: 107 / 180

107 Program description: Mixers
Note:
If the stick does not coincide with the exact reference
point, please note that the percentage value in the
“Output” line always relates to the current stick positi-
on, rather than the reference point position.
Rounding off the curve
This curve profi le is “jagged”, but it can easily be
rounded off automatically simply by pressing a button.
Press the
ENTER button adjacent to the “curve sym-
bol” :
C u r v e M I X 5 8 1 0
I n p u t + 0 %
C u r v e O u t p u t + 9 0 %
o n P o i n t 2 + 9 0 %
®
O
U
T
P
U
T
- +
2
10
0
1 3
You will fi nd typical examples of “real world” applica-
tions amongst the programming examples (page 140
or 147).
Examples:
1. You wish to set up an (optional) external switch
connected to socket 7 to open and close the aero-
tow coupling. The switch has already been assig-
ned to control channel 8 in the »
Control adjust «
menu. The aero-tow release is operated by a servo
connected to receiver output 8.
During initial aero-tow fl ights it becomes evident
that up-elevator has to be held in during the whole
of the aero-tow procedure, so we need to add a litt-
le up-trim automatically to the elevator servo con-
nected to receiver output 3 whenever the aero-tow
coupling is closed. In the screen shot shown on
page 102, the fourth linear mixer has already been
set up for this, with the switched channel “S” as the
mixer input. Now move the selected switch to the
mixer OFF position …
L i n e a r M I X 1 6 E L 1 o n = >
L i n e a r M I X 2 T r K 1 E L G 4 o f f = >
L i n e a r M I X 3 8 1 0 = >
L i n e a r M I X 4 S E L 7 = >
t y p e f r o m t o A d j u s t
S E L
t
s S E L
S E L
... and use the
symbol to move to the second
page. Here you select STO using the rotary control,
then press the rotary control briefl y; the offset va-
lue now jumps to +100% or -100%, depending on
the selected switch position.
Move to ASY using the rotary control, move the se-
lected switch to the mixer ON position, and set the
required mixer input after a brief press on the rota-
ry control.
2. The Ch1 stick is to be used alternately to control
an electric motor and / or the braking system of a
hot-line electric model. The basic requirements are
as follows:
• Ailerons: Receiver outputs 2 + 5
• Elevator: Receiver output 3
• Speed controller: Receiver output 6
If output 6 is already in use for some other purpo-
se, the next free output socket must be used for the
speed controller.
In the » Model type « menu select “2 AIL” and as-
sign the brake stick to “Input 1”.
The next step is to set up two fl ight phases.
For example, in the »
Control adjust « menu leave
the phase-specifi c input 6 at “free”, and in the other
fl ight phase assign the open fi xed switch FX. Now
assign a free mixer “Ch1
6” for the speed cont-
roller, with a mixer ratio of 100%.
In the » MIX active/phase « menu this mixer is ac-
tivated in that fl ight phase in which input 6 is “free”,
and disabled in the fl ight phase in which the fi xed
switch is set up.
Now use the same procedure to enter the settings
for the two mixers “Brake 5 aileron” and “Brake
3 elevator” in the phase-specifi c » Wing mixers «
menu, and check the brake offset setting for these
mixers in the »
Model type « menu.
3. The fi nal example applies to model helicopters:
If in the Heli program you wish to assign a slider to
the collective pitch trim function, e.g. using trans-
mitter control 6 assigned to input 8 (»
Control ad-
just « menu, set input 6 to “free”, assign input 8 to
transmitter control 6), simply defi ne a free mixer „8
1“ with a symmetrical mixer ratio of, say, 25%.
Due to the internal coupling, this transmitter control
then acts equally on all existing collective pitch ser-
vos, without affecting the throttle servo.