Tag: Length Control

Quadrature

Quadrature allows a length control system to count four counts for one pulse from a bi-directional (two-channel) encoder.

A two-channel encoder is capable of reporting direction as well as movement.  Typically, there is an A channel and a B channel.  As the shaft of the encoder turns, pulses from both channels are being sent to the length control system.  The two channels are always offset by 90 degrees, so one channel will always lead the other channel depending on direction.

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