GRAUPNER MX-16S, Programming Manual

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81
In the “Swashplate” line of the » Base settings « menu
you have already defi ned the number of servos which
are installed in your helicopter to provide collective pitch
control; see page 43. With this information the mx-16s
program automatically superimposes the functions for
roll, pitch-axis and collective pitch as required, i.e. you
do not need to defi ne any additional mixers yourself.
If you have a model helicopter which only has a sing-
le collective pitch servo, the “Swashplate mixer” menu
point is – of course – superfl uous, since the three
swashplate servos for collective pitch, pitch-axis and roll
are controlled independently of each other. In this case
the swashplate mixer menu does not appear in the mul-
ti-function list. With all other swashplate linkages emp-
loying 2 ... 4 collective pitch servos, the mixer ratios and
directions are set up by default, as can be seen in the
screen shot above. The pre-set value is +61% in each
case, but the value can be varied within the range
-100% to +100% using the right-hand rocker button, af-
ter pressing the
SELECT button.
Pressing the CLEAR button resets the mixer input in the
highlighted fi eld to the default value of +61%.
If the swashplate control system (collective pitch, roll
and pitch-axis) does not follow the transmitter sticks in
the proper manner, then the fi rst step is to change the
mixer directions (+ or -), before you attempt to correct
the directions of servo rotation.
Swashplate mixers
Collective pitch, roll and pitch-axis mixers
HEIM mechanics with two collective pitch servos:
• The collective pitch mixer acts on the two collective
pitch servos connected to receiver sockets 1 + 2;
• the roll mixer also acts on the two collective pitch ser-
vos, but the direction of rotation of one servo is re-
versed, and
• the pitch-axis mixer acts on the pitch-axis servo alo-
ne.
Note:
Ensure that the servos do not strike their mechanical
end-stops if you change the servo mixer values.
Swashplate mixers – Model helicopter