Q. What is the input voltage range for my Hitec Servo?
A. All Hitec servos can be operated within a 4.8 - 6V (4 or 5 cells) range. Only the HS-50 operates exclusively at 4.8 volts (4 cells). Be aware that "coreless" and digital servos often perform poorly when alkaline batteries are used.
Q. What signal do servos require to operate?
A. All Hitec servos require a 3-4V peak to peak square wave pulse. Pulse duration is from 0.9ms to 2.1ms with 1.5ms as center. The pulse refreshes at 50Hz (20ms).
Q. What is the difference between coreless and cored servos?
A. In a standard motor like the one in the HS605 servos, there is an iron core between two permanent magnets. Around this core is the wire winding. The core generally has either 3 or 5 sections. As the core moves, these sections cause the core to hesitate slightly when it reaches a different magnetic polarity. This is called ratcheting. Because of this ratcheting, the cored servos have less start up torque and a wider dead band.
In a coreless servo, there is no iron core. There is one permanent magnet around which is a bell of wire. When electricity is supplied the bell spins around this magnet. Since there are no sections or core, there is no hesitation between poles. This gives the coreless servo better start-up torque and resolution.
Q. What is the meaning of the wire colors?
A. On all Hitec servos the black wire is battery ground (negative), the red wire is battery power (positive) and the white or yellow wire is receiver signal.
Q. What is servo deadband?
A. Deadband reflects the time it takes for a servo to respond when stick movement is given. Standard servos have a deadband of around 8us and high performance servos have a deadband of 1~3us.
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