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Note: Once in calibration mode the helicopter will fly as if it is in Mode 3 with no AAT Function, even
though the tail switch indicates Mode 1. This is normal and indicates that you have successfully en
-
tered the calibration mode.
To perform calibration, hover the helicopter in place for 4 minutes. It is important to hover the helicop-
ter as smoothly as possible, maintaining a steady height with minimal control input. After 4 minutes,
land the helicopter and immediately unplug the battery. The Exera 130 CX will now be recalibrated to
account for aged motors and battery as well as the pilot’s flying environment. To avoid incorrect
calibration, inexperienced pilots may wish to ask a more experienced pilot to help them.
The effectiveness of ultrasonic ranging is heavily dependent on the surface that is being measured.
Hard, reflective surfaces reflect ultrasonic pulses well and therefore result in increased sensing dis-
tance. On the other hand, softer, more acoustically absorbent materials significantly reduce sensing
distance. In particular, performance in Mode 1 over carpet, furniture, or other soft materials will result
in degraded performance.
Devices using ultrasonic ranging can interfere with one another if operated in close proximity. There-
fore, it is important that multiple Exera 130 CX helicopters in modes 1 and 2 not be flown within 30 feet
of each other.
Ultrasonic sensors (transceivers) generate sound waves around 40kHz. These sound waves can disturb
some animals, including dogs. We recommend that you avoid flying the Exera 130 CX around dogs as
doing so may cause them to behave erratically.
Selecting a Flying Area
Calibration
The Exera 130 CX is a micro class helicopter designed for indoor flying spaces, such as a living room, ga-
rage, or gymnasium. You’ll want to select an open area free of people and obstructions. We suggest an
area with at least 12-feet by 12-feet of floor space and no less than 8-foot ceilings when making your
first few flights.
After you’ve properly trimmed the helicopter and become familiar with its handling and capabilities
you may be able to fly in other smaller and less open areas, but it’s always more fun to fly indoors in
spaces that are larger and more open when possible.
Notes on Ultrasonic Ranging
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