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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 or an STi
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 or STi
orientations that cause higher fade or hold values. Perform this step for at least
one minute.
5. Re-position any remote receivers as necessary.
Receiver Power System Requirements
Inadequate power systems that are unable to provide the necessary minimum
voltage to the receiver during flight have become the number one cause of
in-flight failures. Some of the power system components that affect the ability
to properly deliver adequate power include:
• Receiver battery pack (number of cells, capacity, cell type, state of charge)
• The ESC's capability to deliver current to the receiver in electric aircraft
• The switch harness, battery leads, servo leads, regulators etc.
The AR7350/AR9350 has a minimum operational voltage of 3.5 volts; it is
highly recommended the power system be tested per the guidelines below.
Recommended Power System Test Guidelines
If a questionable power system is being used (e.g. small or old battery,
ESC that may not have a BEC that will support high-current draw, etc.), it is
recommended that a voltmeter be used to perform the following tests.
The Hangar 9
Digital Servo & Rx Current Meter (HAN172) or the Spektrum
®
Flight Log (SPM9540) is the perfect tool to perform the test below.
Plug the voltmeter into an open channel port in the receiver and with the
system on, or simply monitor the voltage on a telemetry capable transmitter,
load the control surfaces (apply pressure with your hand) while monitoring the
voltage at the receiver. The voltage should remain above 4.8 volts even when
all servos are heavily loaded.
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interface. Note any
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interface,
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