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Preset Failsafe (Spektrum AS3X Programmer Application required)
The Spektrum application enables you to program preset failsafe positions on
individual receiver channels. If loss of signal occurs, Preset failsafe drives the
selected servo channels to their preset failsafe positions.
Receiver Power Only
• With SmartSafe technology 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 are driven to their preset failsafe positions set during binding.
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 receiver is operating optimally and that
the installation (position of the receiver) is optimized for the specific aircraft.
This Advanced Range Check allows the RF performance of the receiver to be
evaluated and to optimize the locations of 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 or STi interface. Note any
orientations that cause higher fade or hold values. Perform this step for at
least one minute.
5. Re-position the receiver as necessary.
