The second is the electrical output characteristics of the encoder channels. The first is the number of output channels. There are two important considerations when selecting the outputs of an encoder. Incremental encoders will output a count or pulse at periodic predetermined intervals. Absolute encoders have a unique digitally coded output, or address, for every distinct position of the encoder. The thing to remember is that it’s the receiving device that determines the correct configuration of the encoder’s outputsWithin linear or rotary encoders, there are two basic types of electrical output formats: Incremental or absolute. However, this is one of the most common problems customers have when selecting encoders. Choosing the correct number of channels and the correct output type for an encoder can be the determining factor in whether or not a feedback system will function properly.
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