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SPEKTRUM DX18t • TRANSMITTER INSTRUCTION MANUAL
EN
TROUBlESHOOTING GUIDE
Problem
Possible Cause
Solution
Aircraft will not Bind (during
binding) to transmitter
Transmitter too near aircraft during binding process
Move powered transmitter a few feet fromthe aircraft,
disconnect and reconnect the flight battery to the
aircraft
Aircraft or transmitter is too close to large metal object
Move the aircraft or transmitter away from the large
metal object
The bind plug is not installed correctly in the bind port
Install bind plug in bind port and bind the aircraft to the
transmitter
Flight battery/Transmitter battery charge is too low
Replace/recharge batteries
Aircraft will not link (after binding)
to transmitter
Transmitter too near aircraft during linking process
Move powered transmitter a few feet from aircraft,
disconnect and reconnect flight battery to aircraft
Aircraft or transmitter is too close to large metal object
Move the aircraft or transmitter away from the large
metal object
Bind plug left installed in bind port
Rebind transmitter to the aircraft and remove the bind
plug before cycling power
Aircraft bound to different model memory
(ModelMatch™ radios only)
Select correct model memory on transmitter
Flight battery/Transmitter battery charge is too low
Replace/recharge batteries
Transmitter may have been bound using different DSM
protocol
Bind aircraft to transmitter
Damaged remote receiver or receiver extension
Required remote receiver is not connected
The receiver goes into failsafe
mode a short distance away
from the transmitter
Check the receiver antenna to be sure it is not cut or
damaged
Replace or contact Horizon Product Support
Main and remote receivers too near each other
Install main and remote receivers at least 2 inches
(51mm) apart
Receiver quits
responding during operation
Low battery voltage
Completely recharge flight battery
Loose or damaged wires or connectors between battery
and receiver
Do a check of the wires and connection between
battery and receiver. Repair or replace wires and/or
connectors
Receiver loses its bind
Bind button pressed before transmitter powered on
Rebind by performing binding instructions
Receiver slowly blinking at
landing (DSM2 Only)
Loss of power to the receiver during flight
Check battery voltage
System powered on and connected, then receiver pow-
ered off without powering off transmitter
Power off transmitter when receiver is powered off
Flight log registers undesirable
number of fades, losses or holds
or aircraft responds irregularly to
controls
Poor signal reception
Reposition remote receivers for improved RF signal
path diversity
Electronic feedback
Check for and stop feedback from servos or motor
systems to the ESC or receiver
Low power
Check aircraft power draw and increase battery power
or decrease power demand by installed systems.
Ensure all aircraft batteries are fully charged. Ensure
the installed BEC for an electric aircraft is adequate for
the power demand
5. Remove and keep 2 screws from the installed throttle ratchet
strip.
6. Do not remove grease from plastic part under the strip.
7. Attach the strip to the gimbal using the 2 screws.
8. Tighten the spring tension screw to get desired stick tension.
CAUTION:
Make sure no wires or components
are pinched or damaged while installing the back cover.
9. Carefully close the transmitter case using the 4 screws and
re-install the hand grips.
10. Connect the battery to your transmitter.
