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Detail program description - Control switches
   Control switches
Programming the control switches
Use the selection keys on the left or right touch pad 
to scroll to the »Control switch« option in the multi-
function menu: 
Ser vo adjustment
Stick mode
Control adjust
Dual Rate / Expo
Channel 1 cur ve
Switch display
Suppress codes 
Suppress models 
Base setup model
Model type
Control switch
Logical switch
Ser vo adjustment
Stick mode
Control adjust
Dual Rate / Expo
Channel 1 cur ve
Switch Display
Suppress codes 
Suppress models 
Base setup model
Helicopter type
Control switch
Logical switch
Open this menu option with a tap on the center 
SET
key of the right touch pad.
SEL
0%
0%
0%
C1
C2
C3
–––
C4
C O N T R O L   S W I T C H
Geb.  1
Geb.  1
0%
STO
–––
–––
–––
SEL
C1
C2
C3
C4
free
free
free
free
With many functions, it makes sense not to trigger 
their actuation by using one of the normal switches, 
but to trigger them automatically by the specifi c, 
freely programmable position of a transmitter control 
or joystick.
Typical applications:
On/Off switching of an on-board glow plug in 
conjunction with the carburetor setting and/or 
motor speed. (The glow plug heater switch for this 
will be controlled by a transmitter-side mixer.)
Switching a stopwatch on or off to measure the 
simple running time of electric motors
Automated switch-off of a combi "aileron 
¼ rudder" 
mixer when extending the airbrakes, e.g. so as to 
match the bank attitude of the model to the ground 
slope when landing on a ridge, without the direction 
of fl ight also being affected by the rudder (if the 
mixer were active).
Lowering landing fl aps, adjusting elevator trim 
and/or executing specifi c Dual Rate, Exponential 
and Differential switchings when coming in to land, 
as soon as the throttle joystick is moved beyond 
the switching point. If required, a control switch 
can be overridden using a separately assigned 
switch in the 5th column.
The
mc-20
 HoTT program is equipped with a total of 
eight so-called control switches ("C1" to "C8").
Accordingly, anywhere where switches can be 
assigned you have the option not only of using 
the 16 possible transmitter switches, but also of 
choosing and assigning one of the "C1" … "C8" 
control switches from the list of expanded switches 
– as described in the section "Assigning transmitter 
controls, switches and control switches" on page 56.
Furthermore, combining a control switch with an 
additional switch (as described later) also permits 
more complex switching permutations.
Basic procedure:
If no transmitter control is assigned, the 
1. 
corresponding input fi eld of the column labeled 
SEL (second column from the left) will be empty.
Use the selection keys of the left or right touch 
2. 
pad to select the line for the desired control switch 
(1 to 8).
Briefl y tap the center 
3. 
SET
 key of the right touch 
pad.
Move your selected transmitter control.
4. 
The associated transmitter control number 
appears in the input fi eld of the column above the 
left switch icon.
Use the selection keys on the left or right touch pad 
5. 
to move to the right into the column labeled STO.
Move the transmitter control to the desired switching 
6. 
point then briefl y tap on the center 
SET
 key of the 
right touch pad to save the switching point.
Complete the remaining settings such as 
7. 
switching direction, etc.
Exit from the menu with a tap on the center 
8. 
ESC
key of the left touch pad.
  Assigning a transmitter control to a control switch
Using the selection keys on the left or right touch 
pad, select your chosen line (1 to 8). Following a fi nal 
tap on the center SET key of the right touch pad to 
activate the control assignment, the message shown 
below will appear in the display:
SEL
0%
0%
0%
C1
C2
C3
–––
C4
C O N T R O L   S W I T C H
Geb.  1
0%
STO
–––
–––
–––
SEL
C1
C2
C3
C4
frei
free
free
frei
Move desired
control adj.
For example, the right-side proportional slider is now 
to be assigned to control switch "C1", the default 
throttle limiter for a helicopter model memory. So just 
move this control in any direction. As soon as this is 
detected, the control name appears on the display: