PCV
O C F
Pitch curve. Heli programming only. Pre-programmed curve mix which
gives 13 points along the throttle stick (or other control – see PIT)
movement to fine-tune the pitch response. Manual P. 104. NOTE: Hovering
pitch, pitch trim and hovering offset allow fine tune this curve.
PHV
O C G
Hovering pitch. Heli programming only. This is a pre-programmed
hovering-type mix which gives an in-flight adjustment to the pitch curve at
and around center stick (or the hovering point if that point is not at center
throttle stick, then the center-point of this feature is adjusted with the
hovering offset command) to give very fine-tuning for easiest hovering.
Manual P. 105.
PIT
P D I
Pitch curve activation. Heli programming only. Used to attach the pitch
channel to the throttle stick. Pitch curve may be disabled or operated by a
control other than the throttle stick, for example, in fixed pitch and dual
rotor helicopters (which use throttle to adjust pitch, not a pitch command.)
Manual P. 58. NOTE: Manual says this function turns the pitch curve
function on and off; however, PCV, pitch curve, actually remains functional
if you reassign pitch to a different control such as a slider.
PMD
P B I
Pulse Modulation. Used to select FM (PPM) or PCM to match the particular
receiver being used. Transmitter must be turned off and back on to activate
new modulation. Manual P. 43.
PMX
O B I
Programmable mix. Used to cause specific servo responses to specific
inputs separate from the basic control set-ups. For example, used to mix 2
servos to operate in tandem to move a rudder on giant scale aircraft, or to
mix smoke activation based upon throttle stick position. Manual P. 65.
PPM: Pulse Position Modulation. An analog method for encoding data as a time position
of a narrow signal pulse, where amplitude is constant, but pulse width and pulse position
are changed. See PMD.
PRE: Previous. Return to previous screen within a feature.
PT :Next point to the right in the curve. Used in curve mix programming.
PT :Next point to the left in the curve.
PTM
O C H
Pitch Trim. Heli only. Offsets the entire pitch curve, increasing or
decreasing responsiveness proportionally at all points. Adjustable in flight.
R A
Rudder-to-Aileron Mixing. Air only. Used to counteract undesirable roll
which often happens with rudder input, especially in knife edge, also called
roll coupling. Pre-programmed mix which gives proper aileron input to
counteract roll coupling when rudder is applied. Manual P. 83.
R T
O D H
Rudder-to-throttle. Heli programming only. This preprogrammed mix adds
a small amount of throttle to counter the added load on the main gear from
increasing the pitch of the tail blades, helping to maintain a constant
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