To understand how and why, we need to discuss the concepts of accuracy, resolution, and repeatability as they apply to encoders. Encoder resolution is commonly measured in pulses per revolution (PPR) for incremental encoders and bits for absolute encoders. Rotary encoders are. Thus, encoder resolution and accuracy are essential to the proper operation of a closed-loop system. Resolution is the distance over which a. Resolution is a fundamental specification and one of the most important factors when selecting an encoder. For linear encoders, resolution.