Matrix Vision mvHYPERION-Series Technical Manual page 128

124 CONTENTS
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Working with an rotary encoder (p. 124)
17.4 Working with an rotary encoder
In many applications including industrial controls, robotics etc. an rotary encoder (or incremental encoder) is used,
which is an electro-mechanical device that converts the angular position of a shaft or axle to an analog or digital
code, making it an angle transducer.
During the rotation of the axis, an rotary encoder generates a so-called Gray code signal at the output of the two
data lines:
Figure 1: Principle of an rotary encoder
Figure 2: Gray code signal at the output of the two data lines
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