Hj Digital Servo Tester Esc Consistency Speed Controller For Rc Helicopt
(S-1 manual mode (Manual) 2. S-2-bit mode (Neutral) 3. S-3 automatic mode (Automatic) Keys pulse width: 1). 50H analog servo signal cycle 20us frequency 50Hz 2). 125H digital the steering gear a signal cycle 8us frequency 125Hz 3).