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Two-Pulse Encoders

Last Modified: November 16, 2017

A two pulse encoder is a position measurement sensor that has two channels, A and B. When the encoder is moved, either signal A or signal B on the encoder pulses. A pulse on signal A represents a movement in one direction, and a pulse on signal B represents movement in the opposite direction. When signal A pulses, the counter increments. When signal B pulses, the counter decrements.

Many encoders also use z indexing for precise determination of a reference position.

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