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Testing Failsafe
Secure the aircraft on the ground and remove the propellers. Test Failsafe
by turning the transmitter off and noting how the receiver drives the control
surfaces.
Receiver Power Only
• With SmartSafe or Preset Failsafe, when the receiver only is turned on (no
transmitter signal is present), the throttle channel has no output, to avoid
operating or arming the electronic speed control.
• All other channels have no output until the receiver has linked to the transmitter.
Range Testing
Before each flying session and especially with a new model, it is important to
perform a range check. All Spektrum aircraft transmitters incorporate a range
testing system which, when activated, reduces the output power, allowing
a range check.
1. With the model restrained on the ground, stand 30 paces (approx. 90
feet/28 meters) away from the model.
2. Face the model with the transmitter in your normal flying position and place
your transmitter into range check mode.
3. You should have total control of the model with the button depressed at 30
paces (90 feet/28 meters).
4. If control issues exist, contact the appropriate product support department.
Advanced Range Testing
For sophisticated models that have significant conductive material in them, the
Advanced range test using a flight log is recommended. The advanced range
check will confirm that the internal and remote receivers are operating optimally
and that the installation (position of the receivers) is optimized for the specific
aircraft. This Advanced Range Check allows the RF performance of each receiver
to be evaluated and to optimize the locations of the remote receiver.
IMPORTANT: If you don’t have a telemetry-capable transmitter, you can connect
a Flight Log to the Bind/Prog port on the receiver.
1. Standing 30 paces away from the model, face the model with the transmitter in
your normal flying position.
2. Put your transmitter in range test mode. Range test mode reduces the power
output from the transmitter.
3. Have someone position the model in various orientations (nose up, nose down,
nose toward the transmitter, nose away from the transmitter, etc.).
4. Observe the telemetry on your transmitter. Note any orientations that cause
higher fade or hold values. Perform this step for at least one minute.
5. Re-position any remote receivers as necessary.
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