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5
Important: Y-Harnesses and Servo Extensions
When using a Y-harness or servo extensions in your installation, it’s important
to use standard, non-amplified Y-harnesses and servo extensions. Amplified
Y-harnesses and servo extensions will cause the servos to operate erratically or
not function at all.
Setting the Failsafe Positions
The Receiver features two types of failsafe: SmartSafe and Preset Failsafe.
SmartSafe
SmartSafe
™
failsafe is recommended for most aircraft.
When the transmitter and receiver are turned on, the receiver connects to the
transmitter and normal control of all channels occurs. If loss of signal occurs,
SmartSafe moves the throttle channel to its preset failsafe position (low throttle)
that was set during binding. All other channels hold their last position. When the
receiver detects signal from the transmitter, normal aircraft operation resumes.
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 (approximately. 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.