44 SPEKTRUM NX20 • TRANSMITTER INSTRUCTION MANUAL
EN
Use the Aircraft Type Screen to select wing and tail types to match
your airplane model. Diagrams and setup names show on the
transmitter screen to show the available setups.
Select wing and tail types before doing any other programming.
Refer to spektrumrc.com for more information about new NX20
AirWare software updates to support these options.
Wing
• Normal
• Flaperon*
• Dual Aileron*
• 1 Aileron 1 Flap
• 1 Aileron 2 Flap*
• 2 Ailerons 1 Flap*
• 2 Ailerons 2 Flap*
• Elevon A*
• Elevon B*
• 4 Aileron
• 6 Aileron
• Canard with elevon
Tail
• Normal
• V-Tail A**
• V-Tail B**
• Dual Elevator
• Dual Rudder
• Dual Rudder/Elevator
• Taileron
• Taileron B
• Taileron + 2 Rudders
• Taileron B + 2 Rudders
*Selection of multiple ailerons activates the Differential menu
option.
** Think of “V-Tail A” and “V-Tail B” function as swapping the servo
plugs inside the system. If V-Tail A does not work correctly
with your aircraft, try V-Tail B. You may also need to use a
combination of servo reversing to get the proper control surface
response.
A Ch 6 servo port (left aileron)
B Ch 2 servo port (right aileron)
C Ch 4 servo port (left V-tail)
D Ch 3 servo port (right V-tail)
E Ch 3 servo port (left aileron)
F Ch 2 servo port (right aileron)
A
B
Dual Aileron Wing
Type Connection
F
E
Elevon Wing Type
Connection
DC
V-Tail Type
Connection
Recommended Servo Connections
Aircraft wing and tail type settings are a pivital step in your model
setup. Making these selections may reveal setup menus in the
function list to support the chosen wing and tail type. Some models
require electronic mixing and for those there are pre-configured
options in dedicated menus to make model setup straight forward.
In most cases, setting up the wing and tail type to match your
model will eliminate the need to use open mixes for primary flight
controls.
Aircraft Type (System Setup)
Transmitter based configurations
When selecting the wing and tail type, the transmitter will re-
order the channel outputs as neccesary. Any changes made to
the channel assign menu will be reset when a wing or tail type
is selected. After setting the wing and tail type, refer to the RX
Port assignments menu (sub menu under Channel Assign) or the
channel monitor for servo port assignments.
For an airplane with two aileron servos, selecting Dual Aileron will
change the servo setup menu to reflect the second aileron servo
by showing left and right aileron options, and also add the (aileron)
differential menu to the function list. Selecting Flaperon uses all
the options for Dual Aileron but adds a flap menu to support the
ailerons operating as both flaps and ailerons.
For an airplane with flaps and ailerons with four indepedent servos
you can select 2 aileron 2 flap. With that selection made the servo
menu will include options for both servos, the function list will
include an (aileron) differential menu, flap menu, and the mixing for
the flap servos is integrated into the values in the flap menu.
For a V-tail, selecting one of the V-tail types will add a menu to the
function list to manage the values for the V-tail configuration.
For a flying wing with elevons you can select an Elevon option,
and then an elevon setup menu will appear in the function list to
manage the mix of the two servos to get the desired output.
Servo port assignments may vary from the examples shown when
multiple multi servo types are selected.
BNF
BNF airplanes with AS3X and SAFE address mixing needs on the
airplane by using Y harnesses. Refer to your airplane manual for
setup inforrmation and always check controls prior to flight.
For a BNF airplane with three or four channels a Normal wing type
selection is used.
For BNF airplanes with flaps, choose 1 aileron 1 flap.
IMPORTANT: Transmitter based mixing options are not viable on
BNF airplanes with AS3X and SAFE because the receivers are
pre-configured to work on the suggested channel layout, with Y
harnesses. For example, if you select 2 ailerons and connect each
directly without using a Y harness, only 1 aileron will be stabilized
and SAFE will not function correctly.
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