Encoder

Absolute encoder
3.1    Absolute rotary encoder
3.1.1    Construction
3.1.2    Mechanical absolute encoders
3.1.3    Optical absolute encoders
3.1.4    Magnetic absolute encoders
3.1.5    Capacitive absolute encoders
3.2    Absolute multi-turn encoder
3.2.1    Battery-powered multi-turn encoder
3.2.2    Geared multi-turn encoder
3.2.3    Self-powered multi-turn encoder
3.3    Ways of encoding shaft position
3.3.1    Standard binary encoding
3.3.2    Gray encoding
3.3.3    Single-track Gray encoding
3.4    Data output methods
4    Incremental encoder
4.1    Other pulse-output rotary encoders