GRAUPNER MX-16S, Programming Manual

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80
If you were now to reset the offset from -75% to, say, 0%
control travel, the screen would look like this:
Asymmetrical mixer ratios
For many applications it is necessary to set up different
mixer values on either side of the mixer neutral point.
If you set the offset of the mixer used in our example (“6
ELE”) back to 0%, as shown in the picture above,
then select the ASY fi eld and turn the rotary control in
the appropriate direction, the mixer ratio for each direc-
tion of control can be set separately, i.e. to left and right
of the selected offset point.
Note:
If you are setting up a switch channel mixer of the “S
NN” type, you must operate the assigned switch to
achieve this effect. The vertical line then jumps between
the left and right sides.
Examples:
1. To open and close the aero-tow release the switch
SW3 has already been assigned to control channel 8
in the »
Control settings « menu.
In the meantime you have carried out a few aero-tow
fl ights, which showed that you always needed to hold
in slight up-elevator during the tow. You now wish to
set the elevator servo (connected to receiver output
3) to slight “up” trim when the tow release is closed.
In the screen familiar from page 77 we have set up
the third linear mixer to accomplish this, using the
switch channel “S” as the mixer input. Now move the
selected switch to the mixer OFF position …
… and select the symbol to move to the second
page. Hold the SELECT button pressed in, and use
the right-hand rocker button to select the “Offs” line.
Now press the
SELECT button again – and the offset
value jumps to +100% or -100%, depending on the
selected switch position.
Free mixers
Now hold the SELECT button pressed in and use the
right-hand rocker button again to move to the “Travel”
line, where you set the required mixer input – after
moving the selected switch to the mixer ON position.
2. The following example applies to model helicopters:
In the Helicopter program you may wish to assign the
two INC / DEC buttons (CTRL 5 or 6) to the collec-
tive pitch trim function. This is the procedure: in the
»
Control settings « menu assign one of these two
transmitter controls to input “E8”. Now simply defi ne
a free mixer 8
1 with a symmetrical mixer ratio of,
say, 25%. Due to the internal coupling, this transmit-
ter control now acts equally on all the collective pitch
servos you are using, without affecting the throttle
servo.