H-44
51 thru 58: Programmable Mixers
Programmable mixers are programmed to cause a second
or slave channel to react as a result of providing input to
the primary or master channel or to cause a channel to be
controlled by moving a switch or lever. Programmable mixes
are typically used to activate special aircraft functions like
mixture control, pitch to aileron and elevator mixes to correct
for flight dynamics, etc.
The 12X provides 3 Standard programmable mixes (PROG.
MIX1 - PROG.MIX3) and 5 Multi-Point or Curve programmable
mixes (PROG.MIX4 - PROG.MIX8). Multi-Point (or Curve)
mixing provides the ability to program a customized curve that
the slave channel will follow as it reacts to the master channel’s
input. Multi-Point mixes are different from normal mixes in that
normal mixing results in a linear movement of the slave channel
in relation to the master. With Multi-Point mixing there are up
to 8 points that can be adjusted to control the position of the
slave channel providing the ability to custom tailor the output of
the slave channel.
The primary channel is called the master channel, while the
channel that reacts to the master is called the slave channel.
Mixes are fully programmable, allowing any of the 12 channels
to be master, slave or both (a channel can be mixed to itself).
Trimmers and levers can also be used as a master and are
extremely useful for programming proportional channels to
be operated via a trimmer or lever. Additionally programmable
mixes can always be on or turned off and on via a programmed
switch, Stick position or flight mode. The Snap Roll/ Trainer
switch (momentary switch SNPT) can also be programmed as
the master channel.
Additionally there are 2 options for Master channels:
“#” (pound sign), these master channels are origin-type mixes.
These include #THRO #AIL, #ELE and #RUD. Origin mixing
bypasses any other mixing that might affect that channel
such as throttle curves, exponential, travel adjust or other
programming and uses the stick position only to control the
mix.
“+” sign, these master channels are trim-include-type mixes.
These include THR+, ELE+, AIL+ and RUD+. Trim-include mixes
include the trim of the master channel as well as any other
mixing to the master channel to control the slave channel of the
mix.
The 12X has 3 standard programmable mixers that allow for
linear mixing of a master channel to a slave channel. The
standard mixers are PROG.Mix1, Mix 2 and Mix 3.
These mixes provide for 2 sets of mixing values named Pos0
and Pos1. If one set of values is set to 0% then the mixer can
be turned on and off with a stick, switch or lever. Each set of
mixing values is comprised of 2 percentages to accommodate
movement of the master channel in both directions. This is
shown in the illustration below where there is an upper and
lower percentage for both Pos0 and Pos1.
A mix can be made to always be on by setting Pos0 values only
and not selecting any switches to switch between the Pos0 and
Pos1 values.
Standard Programmable Mixer - (Std. Prog Mixer)
Summary of Contents for JR DSM 12X
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