Product Description: An incremental encoder is a type of encoder device that converts angular motion or position of a shaft into an analog or digital code to identify position or motion. Incremental encoders are one of the most commonly used rotary encoders. An incremental encoder is a linear or rotary electromechanical device that has two output signals, A and B, which issue pulses when the device is moved.[1] Together, the A and B signals indicate both the occurrence of and direction of movement. Many incremental encoders have an additional output signal, typically designated index which indicates the encoder is located at a particular reference position. Also, some encoders provide a status output (typically designated alarm) that indicates internal fault conditions such as a bearing failure or sensor malfunction.