Copy model: see MODEL COPY.
Crow: see BUTTERFLY (GLID) and AIRBRAKE (ACRO).
Cursor: See S
ELECT BUTTONS.
Curve Mix: a mix that does not have the same reaction at all points along the master channel. See Programmable mix.
Cyclic: horizontal controls on a helicopter. Cyclic pitch is typically called elevator. Cyclic roll is typically called aileron.
Data reset: erase all data in a specific model. See RESET.
DELAY: (HELI) slows the servo’s reaction time when changing from one condition to another. Eases any “jumps” in
transition from one pitch setting to another, etc. Also see THROTTLE DELAY, p. 57 (ACRO). . . . . . . . . . . . . . . . . . . . . . .87
DELAY-ELE: (ACRO) portion of AIRBRAKE that slows the input of the elevator to avoid sudden jumps in pitch. See AIRBRAKE.
Delta peak charger: common name for a specialized charger designed and required to properly peak charge both NiMH
and NiCd batteries, actually called a Zero Delta V Peak Charger. See Battery Care and Charging.
Dial: transmitter’s rotary control and button used in various ways during programming. . . . . . . . . . . . . . . . . . . . . . .11
Dial mix: mix that uses a knob or slider as the master control, moving the slave servo based upon the movement of the
knob or slider. See Prog. mix.
Differential: uneven movement in each direction of a control surface. Usually used when discussing ailerons or when
describing an undesirable unevenness in movement of other controls. See Twin aileron servos.
Diode: an electronic device which only allows current to flow one direction. Used to protect radio against power surge
and reversed polarity during charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
DIR-SW: switches that change between the 4 separate directions of snaps available. See SNAP ROLL.
Discharge: to deplete the electrical energy in a battery pack, usually to its lowest safe voltage, for storage or as a part of
regular maintenance. See Battery care and charging.
DP16K: see CAMPac.
DSC: direct servo control. Programming and cable combination which allows operation of all receiver channels and
functions without the transmitter transmitting. Plugs into trainer port of transmitter and special plug on receiver. Leave
power off for both transmitter and receiver. Only the R149DP and R309DPS receivers currently support DSC.
Dual aileron servos: (ACRO / GLID) a model using 2 servos on 2 separate channels to operate ailerons. May include
flaperon action or aileron differential. See Twin aileron servos. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Dual elevator servos: (ACRO / GLID) a model using 2 servos on 2 separate channels to operate elevators. Includes elevon,
V-tail, ailevator. See Twin elevator servos. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Dual rates (D/R,EXP): reduce/increase the servo travel by flipping a switch (or by stick position). Used to make model
more comfortable to fly in different maneuvers. 9C supports triple rates by simply assigning dual rates to 3 position
switches. Includes exponential function, see EXP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Elapsed Time Counter reset: see TIMER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
ELE1/2/3/4: designation for the individual servos that are being commanded by the elevator command. Ex: when
using elevon, the two wing servos are acting as elevators 1 and 2. See Twin elevator servos.
Elevator: surface which controls the model’s rate of climb or descent. Also called cyclic pitch on helicopters.
Elevator-to-airbrake mix: (GLID) used to allow the model to loop even tighter on elevator input by having airbrakes
work with elevators. Not a preprogrammed mix. See Programmable mix. This is the default programming for one
curve mix in GLID.
Elevator-to-flap mix: (ACRO / GLID) Used to apply flaps along with elevators to increase lift, allowing modeler to fly at
slower speeds, make tighter loops or turns, etc. Not a preprogrammed mix. See Programmable mix. This is the default
setting of one mix in ACRO and GLID.
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