User manual

51SPEKTRUM DX20 • TRANSMITTER INSTRUCTION MANUAL
EN
SAIL (SAILPLANE)
Aileron to Rudder
TheAilerontoRuddermixiscommonlyusedforcoordinatedturns.
When active, as aileron is applied the rudder moves in the same
directionastheturn(rightaileroninputresultsinrightrudder
output).Ifyouassigntheightmodetoaswitch,aSubSwitch
option allows you to assign an additional switch to activate up to 3
AilerontoRuddermixesforthatightmode.
Aileron to Flap
TheAilerontoFlapmixallowstheentiretrailingedgeofthewing
(aileronandap)tooperateasailerons.Whenactive,asaileronis
applied the flaps also move. Always program the flaps to move in
thesamedirectionastheturn(sothatrightaileronisequivalentto
apsmovingasrightailerons).
Elevator to Flap
ElevatortoFlapmixcreatesadditionallift,allowingatighterturn.
Theentiretrailingedgeofthewing(aileronandap)operates
asaps(camberincrease)whenyouapplyelevator.Anoffsetis
provided, which is typically used for Snap Flaps. With Snap Flap,
noElevatortoFlapmixoccursuntiltheoffsetvalueisreached.
Typically, this offset is at 70% up elevator so that beyond 70%
thedownapmixcomesin,providingadditionalliftformore
aggressiveturning(fortightthermalsorracingturns).
Flap to Elevator
FlaptoElevatormixpreventspitchuptendencythatoccurswhen
youapplyCroworButtery.Thismixistypicallyusedonlywiththe
CamberSystem.TheFlaptoElevatormixoperatesasacurveso
that the elevator moves down the most during the first 20% of flap
deployment,decreasesoverthenext40%,thenremainsthesame
from 60 to 100% of flap travel.
For sailplanes with ailerons/tips/flaps, make sure an appropriate
Sailplane Type is selected so that tips appear in the transmitter as
RAIL and LAIL. Decrease or increase travel on the tip ailerons by
creatinganAIL>RAILmix.
Foreachofthesemixes,youcanprogrameachightmodewithdifferentmixvaluesorat0%ifnomixisdesiredforthatspecicight
mode.Programmingvaluesincludeindependentcontrolofthedirectionandamountaslavesurfacemovesinrelationshiptothemaster
surface.
The V-Tail Differential screen enables you to increase or decrease
the amount of differential between control surface throws.
Positive Differential values decrease the amount of “down” travel
without affecting the “up” travel on the opposite control surface.
Negative Differential values decrease the amount of “up” travel
without affecting the amount of “down” travel on the opposite
control surface.
The V-Tail Differential menu option only appears when V-Tail A or
V-Tail B is active in Aircraft Type.
To adjust the V-Tail Differential:
1. Scroll to Switch and press the scroll wheel. Scroll right to
selectOn(Differentialisalwayson)orassignthedifferentialto
a switch position.
2.Pressthescrollwheelasecondtimetosavetheselection.
3. Scroll to Diff: and press the scroll wheel once to change the value.
4.Pressthescrollwheelagaintosavetheselection.
SAIL Mixing
V-Tail Differential