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of the mixer programmed on the same channel.
Thus, with linear mixers LinearMIX 1 ... 8 or curve
mixers CurveMIX 9 ... 12, 8-point control curves can
be defi ned for any transmitter control in a manner
analogous to that described in the »Channel 1
curve« menu and these can also be used in fl ight
phase switching if needed. This method of "linking" is
not only also switchable but can even be subject to a
delay by assigning an appropriate delay in the "– time
+" column of the »Control adjust« menu.
Mixer output affecting default software coupling
of aileron, camber-changing fl ap or collective
pitch servos
Before we start specifying the mixer ratio, we must
fi rst give some thought to what happens if we permit
a mixer to affect the default software coupling of
aileron, camber-changing fl ap or collective pitch
servos:
•
Fixed-wing models:
Depending on the number of wing servos available
on the "Aile/fl aps" line of the »Model type« menu,
control channels 2 and 5 are connected via special
mixers for the "aileron" function, 6 and 7 for the
"fl ap" function, outputs 9 and 10 (if present) for the
FLAP2 servos and 11 and 12 for AI2 servos.
If mixer outputs are programmed to affect these
kinds of couplings, then their effect on the
respective fl ap pair derived from the "receiving"
control channel must be accounted for:
Mixer
Effect
N.N.*
2
servo pair 2 + 5 responds with an
aileron function
N.N.*
5
servo pair 2 + 5 responds with a
fl ap function
servo pair 6 + 7 responds with a
N.N.*
6
fl ap function
196 Detail program description - Free mixers
N.N.*
7
servo pair 6 + 7 responds with an
aileron function
N.N.*
9
servo pair 9 + 10 responds with a
fl ap function
servo pair 9 + 10 responds with an
N.N.*
10
aileron function
N.N.*
11
servo pair 11 + 12 responds with a
fl ap function
N.N.*
12
servo pair 11 + 12 responds with
an aileron function
•
Model helicopters:
With helicopter mixers, collective pitch control
may be provided by up to 4 servos connected
to receiver outputs 1, 2, 3 and 5, depending on
helicopter type. The software links these together
to control collective pitch, roll and pitch-axis.
Other than within the »Helicopter mixers«
menu, it is not advisable to mix a free mixer into
these channels because this can lead to very
complex interactions. One of the few exceptions is
"Collective pitch trim using a separate transmitter
control" – see example 3 on page202.
Important notices:
•
With serial links in particular, remember that
that the travels of the individual mixers are
cumulative if multiple stick commands are
made simultaneously: there is a risk that the
servo(s) may strike a mechanical end-stop. If
necessary, reduce "servo travel" to avoid this;
alternatively, set "Travel limit" on the "Servo
adjustments" menu and/or reduce mixer values.
•
Take advantage of the ever-present option
to switch over to the transmitter's »Servo
display«" menu (see page 262). This menu
is reached from almost any menu with a
* N.N. = Nomen Nominandum (the name to be stated)
brief, simultaneous tap on the
the left touch pad. This menu gives you the
opportunity to check the effects of all of your
settings on a single screen.
Mixer ratios and mixer neutral point
Now that we have explained the wide-ranging nature
of the mixer functions, the following section describes
how to program linear and non-linear mixer curves.
For each of the 12 available mixers, the mixer curves
are programmed on a second page of the screen
display. Use the selection keys
right touch pad to select the desired mixer line. If
necessary, use the touch pad's selection keys to
move to the right column (= ) then briefl y tap the
center
SET
key of the right touch pad to access the
graph page.
LinearMIX 1 ... 8: Setting linear mixer values
As a practical example, we will now defi ne a linear
mixer curve to resolve the following problem:
For a motorized aircraft model, the two servos
connected to receiver outputs 6 and 7 – defi ned on
the "Aile/fl aps" line of the »Model type« menu as "...
2FL" – are to be used for actuating landing fl aps. That
is; when a transmitter control is moved, they must
defl ect downwards only. This requires a simultaneous
elevator trim, however.
First allocate, for example, input 6 to the leftmost
slider control SR1 located in the middle of the console
by making settings in the »Control adjust« menu.
A transmitter control on input 6, – as shown in the
above table – will control the two servos connected
to receiver outputs 6 and 7 by default as fl aps. Leave
the default value of "GL" in the "Type" column alone,
however, to confi gure this setting globally for all fl ight
phases – as is the case for the free mixer.
keys of
on the left or
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