Sailplane Section 22
PROG MIX – Programmable Mixers
The PCM9X II System provides 2 Multi-Point
programmable mixers (PROG.MIX1 & PROG.MIX2)
and 4 Standard programmable mixers (PROG.MIX3 -
PROG.MIX6). Programmable mixers are used
whenever the pilot wants a channel to react or move as
a result of providing input to another channel, or to
simply cause a channel to move by moving a switch or
lever.
Multi-Point Mixing provides the ability to define a
customized “curve” of travel that the Slave channel will
follow as it reacts to the Master channel. It is different
from Normal Mixing in the sense that Normal Mixing
results in a linear movement of the Slave channel in
relation to the Master. With Multi-Point Mixing there are
7 points (including end points) along the travel of the
Master channel that can be adjusted to control the
action of the Slave channel (more or less travel in the
same/opposite direction) providing the ability to deviate
from a linear mixing action.
The channel that receives the original input from the
pilot is called the Master channel, while the channel that
reacts to the Master is called the Slave channel. Mixing
occurs when the pilot provides an input to the Master
channel by moving a stick, switch, or lever. The
transmitter automatically generates an input for the
Slave channel based on the pilot’s input to the Master
channel and the parameters defined in the
programmable mixer.
Mixes are programmable, allowing any of the 9
channels to be Master, Slave or both. Other mixing
parameters are also programmable and include the
direction of travel of the Slave channel; the amount of
travel for the Slave channel; the Offset (where the mix
starts and changes direction) and the
switches/levers/sticks that are used to turn a mixer on
and off. All of these elements are adjustable in
Programmable Mixers.
Note: Programmable Mix 1 is defaulted to
Spoiler
Elevator mix. This program when used in
conjunction with Butterfly allows for pitch compensation
during landings. Programmable Mix 1 can be changed
to use any master or slave channel if so desired.
Multi-Point Programmable Mixer
There are 2 Multi-Point Programmable Mixers in the
GLID system. They are Prog.Mix1 and Prog.Mix2. They
differ from the standard mixers in that they allow a non-
linear mix response from the Master to the Slave. This
is possible because the mixer uses 7 points to define
how the slave channel moves as the Master is moved.
As the Master comes across each point, the Slave
response can be defined in terms of deflection and
direction independent of other point settings. This
results in extreme flexibility in the movement of the
Slave channel relative to the Master channel.
TO INHIBIT A MIXER (TURN IT OFF
ENTIRELY)
Highlight either the Master or Slave and press the CLR
button to completely disable a mixer.
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