218
Program description - Free mixers
Examples:
1. To open and close an aero-tow, a switch, e. g. SW
2, has already been assigned to control channel 8
in the »Control adjust« menu:
0%
+100%I5
I6
I7
I8
Ty p
+100%
0.0 0.0
– travel + –time+
0%
+100%
+100%
0.0 0.0
0%
+100%
+100%
0.0 0.0
0%
+100%
+100%
0.0 0.0
GL
GL
GL
fr
fr
fr
---
---
---
Offset
GL
---
Normal
2
Subsequent aero-tow flying has proven that you
always have to fly with the up-elevator held slightly in
during the tow. The solution will be to set up a mixer
that applies slight up-elevator trim to the elevator
servo connected to receiver output 3 when the
aero-tow release is closed. The screen-shot will be
familiar from page 194: here, the fourth linear mixer
has been set up for this function, with the switch
channel "S" as mixer input: Move the selected switch
to the OFF position and then switch …
EL
LinearMIX 1
type
6
from – Begr. +
EL
C1
8
3
EL
S
??
??
––––
LinearMIX 2
LinearMIX 3
LinearMIX 4
LinearMIX 5
to
Adjust
4
C4
2
off
off
off
… to the mixer configuration page.
Here select STO under "Offset" then tap the
centre SET key of the right touch pad briefly …
depending on the selected travel setting in the
»Control adjust« menu and the switch setting,
the offset value will jump to +X % or -X %, for
example:
S
Mix input
0%
Offset
EL
Linear MIX 4
0%
SYM ASY
STO
–100%
SET
Now change left to SYM under "Mixer input" then
tap briefly on the centre SET key of the right touch
pad. The value fields are now highlighted. After
you have moved the selected switch to the mixer
ON position, use the selection keys on the right
touch pad to set the required symmetrical mixer
ratio, for example:
S
Mix input Offset
EL
Linear MIX 4
SYM ASY
STO
–100%
SET
+10%
+10%
2. If a multi- flap wing featuring a "crow or butterfly
system" with (additional) airbrakes is intended,
and this brake system is to be tested with and
without airbrakes, then simply set channel 1 to
"MIX-only" …
MIX ONLY CHANNEL
MIXonly
normal
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16
… and follow this by programming a free mixer
"C1 C1" to restore control over the airbrakes via
servo 1. If you also assign a switch to this mixer,
then you will be able to switch this mixer on and
off as you please.
3. The final example applies to model helicopters:
In the helicopter program, if you wish affect pitch
trim with a proportional control, e. g. one of the
slider controls in the middle of the console, then
assign one of these controls to this function in
the »Control adjust« menu; for example the "I9"
input. (However, leave the default value of "GL"
in the "Type" column as it is so this configuration,
analogous to the free mixer yet to be programmed,
will be applicable globally for all flight phases.)
Finally, simply define a LinearMIX "9 1" with a
symmetric mixer ratio of, for example, 25 %. Due to
the internal coupling, this transmitter control then
acts equally on all of the model's collective pitch
servos without affecting the throttle servo.
9
Mix input Offset
1
Linear MIX 5
SYM ASY
STO
0%
SET
+25%
+25%
Decouple the assigned transmitter control from
control channel 9 in the »MIX-only channel«
menu to ensure that any servo connected to
receiver output 9 can no longer be operated by
this transmitter control; see also page 205.
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