Futaba GY520 User Manual download pdf (Page 4)

RECAUTIONS

• Only use the GY520 with a 2.4GHz system such as the

Futaba FASST

™

system, or a PCM system. Use with a FM

system is strongly discouraged since interference can

cause serious operational problems. In addition to this

the latest high performance tail rotor servos generate

electrical noise which may also cause interference to an

FM receiver.

• Always ensure that there is some slack in the gyro cables

to help maximize performance. Always use the supplied

gyro mounting pads to attach the gyro to the helicopter

mechanics. Do not use a strap that encompasses the GY520.

This may affect the overall performance of the gyro.

• Always allow the gyro to adjust to the surrounding

environmental temperature before ﬂ ight. A large temperature

change during use will cause drift and other operational issues.

• The GY520 uses a conductive resin case to prevent

electromagnetic interference. Do not allow anything to touch

the gyro case as it may cause a short circuit.

• If you are switching between Normal Mode and AVCS Mode

in flight, please keep in mind that you must have the gyro

re-learn the center position after making a trim change within

the transmitter. To memorize the new center position simply

flip the gain switch on the transmitter three times between

Normal Mode and AVCS Mode within one second. The tail

rotor servo will center indicating that the new center position

has been memorized.

• When the GY520 is used in Normal Mode, tail rotor

compensation or revolution mixing must be used within

the transmitter.

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Futaba GY520 User Manual Page 4