The number of bits of the single-turn absolute encoder represents the number of code tracks of the coded disc. Because it is a binary code disk (the same Gray code), its accuracy becomes 2 squares, such as 12 bits, which is 2 the 12th power is also 4096.
The resolution and accuracy of the encoder are not necessarily the same, and the accuracy is determined by various factors such as the reticle, the mechanical concentricity of the code disc, the reading response speed, and the temperature characteristics. If an encoder is using scribed line sine wave to obtain high resolution, its accuracy is not improved, and the subdivision only increases the resolution. What is the accuracy of the reticle before subdivision, and the accuracy of the subdivision, so the accuracy of some high-resolution encoders depends on how many lines were previously subdivided.
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