How to jude if the rotary encoder had been broken ！

Around the encoder to precision components, mainly because the encoder interference is more serious, such as: whether there is a large motor, electric welding machine frequently causing interference, whether the same pipeline transmission and power line, etc.It's also important to choose what kind of output against interference, general reverse signal output with better anti-interference, namely A, - A, B, B, Z, Z, which is combined with the power of 8 lines, rather than 5 lines.With reverse signal in the cable transmission is symmetrical, little interference hand in receiving equipment can also be an increase in judgment.

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