Incremental Encoder

An Incremental Encoder is an encoder that provides information via a waveform output as to the movement of a shaft. It does not provide positional information but that can be calculated after performing a homing cycle if the encoder includes an index. Incremental encoders can use optical, magnetic, capacitive or other technologies. Quadrature output is most common and can be used to determine the shaft’s speed, acceleration, direction, and position. The resolution of an incremental rotary encoder is stated in cycles per revolution (CPR). An incremental encoder can also be used as a human interface device with a knob to adjust some parameter such as temperature, volume, or speed.