Operation Manual
(access via Set-Up Menu)
22 Fixed Wing Models
Freely Programmable
Mixer
MIXER FUNCTIONS
The Multi-function menus "FL", "UN”, "Fb", "AC" and
"HE" contain numerous mixing functions, with which
two (or more) control functions are mixed together.
For example "Combi Mix ", here the rudder can be
moved at the same time, without operating the
rudder stick, on operating the ailerons. Nevertheless
the rudder remains separately controllable. The
amount the rudder is moved, by the Combi Mix, is
determined by the mixing proportion and the mixing
direction, which the model flier must program. The
input signal of this mixer is the aileron control
function (see the block diagram). The mixer output
affects a control path, which before it affects the
servo, will be influenced by the codes to the right of
the “Input Point from Mixers” in the block diagram,
sub trim and servo reversal.
To the mixers are besides external switches
assigned, with which they can be switched on and
off. A multiple reservation of an external switch is
however because of the multiplicity of the mix
functions inevitable
Additionally to the finished mixer functions three
freely selectable mixers are programmable for each
type of model (with the helicopter program two). First
control function (mixer input) becomes and the
control path (mixer output) of the user defines, then
the mixing proportion or the mixing direction and the
neutral point input.
The neutral point. in the following OFFSET
mentioned. determines that point on the control way
of a giver, with whom the mixer does not influence
the control path attached at the output. I.d.R. is that
the central position of a control stick.
The freely programmed mixer is by software always
switched on, alternatively can for it in addition, an
ON/OFF switch be assigned.
In addition to the finished mixer functions the model
types “FL”, “UN”, “Fb”, “AC” have three, and the type
"HE" has two, freely selectable mixers at your
disposal. The mixers are accessed in the Set-Up
menu by successively pressing the keys the
ROLL UP or ROLL DN buttons. They are identified
by the identification letters “A, B and C".
With the CH SEL or the button subroutines are
branched to, in allow you to determine the mix
proportion, offset (deviation of a control, e.g. joystick
or sliding control, centre position), control function
(=input signal), control path (=mix output) and mix
switch.
Methodology, Example Mixer A:
CH SEL or the button is pressed repeatedly,
until the display shows “Ach". Using the INC button
the number the control function (=giver 1…8) and
with the DEC button the number of the control path
(=output 1…8) are determined. The selected
channels are displayed in the lower line of the
display. (pressing CLEAR resets this allocation).
Press CH SEL : The display changes to: “ASW”.
Here, where the mixer is to remain constantly
switched on, the display should show “ON”.
Alternatively, an external switch can be assigned, in
order to be able switch the mixer on and off. To
change this setting press the INC or DEC buttons.
In the lower line of the display the card connection
number appears, to which an appropriate external
switch should be attached:
Mixer External Switch
A Connection 7
B Connection 6
C Connection 5
Select either “ON” or " 7 " press the CH SEL button.
A mix proportion between 0 and ±125%, symmetrical
to the neutral point, can be set using the INC or
DEC buttons ( CLEAR resets the parameter to 0%).
If an external switch was assigned, the mixer can be
switched off and in the display would show “OF”.
One presses CH SEL again, for the OFFSET input:
Move the control into the desired position and press
CLEAR . The OFFSET is shown in the display (range
approx. ±85). CLEAR resets the OFFSET to 0. If an
external switch has been assigned and is switched
off, the display also shows “OF” here. (The OFFSET
position of the control function should again be
stored as required.
Thus the programming of the mixer A is final. With
the mixers B and C proceed in same way.
Note:
Mixing proportions of different mixers can be overlaid in such a
manner that uneven servo movement is compensated for. E.g.:
With the model types “UN” and “Fb”, receiver outputs 2 & 5 are
already linked, by software, to the aileron control. If a freely
programmable Mixer is set 2
Î 5 is set now with a mix quotient of
+100%, then only servo 5 would move, and with -100% set only
servo 2 moves.
In the helicopter program control function 6 cannot be used as
input signal for a mixer, since for this function the pitch trim with
external potentiometer is reserved (see appropriate diagram page
61). The signal affects directly only the receiver output 6, whereby
the control trim is limited to 25% of the normal throw. Depending
on the type of swash plate (Swash Mixer), certain control paths
are linked together (as with all finished mixers), so that similar
considerations apply as with the types “UN” and “Fb”. E.g. the
initial standard wash-out mixer links the "N" control function 1 with
channel 6.