Incremental rotary encoder selection What are the precautions?！

Note the three parameters:
1. Mechanical installation dimensions, including positioning only, shaft diameter, mounting hole; cable outlet; installation volume; work environment protection level to meet the demand.
2. Resolution, that is, the encoder output pulses per cycle, the number of whether to meet the design requirements of the use of precision.
3. Electrical interface, the encoder output common push and pull output, voltage output, open collector, long drive output. Its output mode and its control system interface circuit to match

absolute encoder, incremental encoder,

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