DS (digital servo) switch:
Switch to “on” for digital servo or “off” for analog servo. Selecting the wrong type of servo may cause
damage to your servo and Gyro.
DIR switch:
Check the operation direction of the gyro by moving the tail to one side. If the servo is moving in the
wrong direction adjust the DIR switch according. Please make sure the Gyro is operating in correct
direction. Gyro operating in wrong direction may result in dangerous situation and damage to
helicopter or personal injury may occur.
Delay:
For fast digital servo set delay to zero. For slower or analog servo set delay to stop tail hunting.
Limit:
Use this adjustment to set the maximum travel of the rudder servo. Move the rudder stick to left and
right and adjust the limit trimmer so that the servo will not blind from full left to full right. This is the
travel limit for the servo and it will not operate beyond this limit to protect the linkage and servo.
LED display:
The LED display indicate the operation state of the servo. Please refer to the table below.
LED display
Gyro operation state
Rapid flash
Indicate that data is being initialized on power up.
Steady flash
Indicate that the gyro is operating in the AVCS head lock mode.
OFF
Indicate that the power is OFF, or the gyro is operating in the
normal mode.
Slow flash
Indicate that gyro has not received any signal of rudder operation
from the transmitter, the rudder servo cannot operate at this time..
Intermittent flash
Indicate that open power in the normal mode, but gyro can’t initialize
the data correctly at that time. Please switch the gyro sensitivity
switch to the AVCS mode, and close the power of transmitter, then
open it again. When in AVCS mode, rudder control signal currently
received is different from neutral signal in gyro.
Double flash
It happens in the following circumstances:
The rudder stick is operating.
The neutral position of tail rudder is moving, and you have to
readjust and set it.
Trouble shooting:
Tail hunting:
The sensitivity is set too high. Low the sensitivity or increase Delay.
Tail drafting:
The sensitivity is set too low. Increase the sensitivity or decrease Delay.
During AVCS mode the natural position of the rudder servo is initialized during startup. Never adjust
the rudder trim during flight or natural position may be lost. If necessary switch to normal mode, adjust
natural position and switch back to AVCS mode after adjustment been made.
