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Encoders Frequently Asked Questions AutomationDirect Logo


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  1. What is the inside thread pitch of the TRD-N/NH Encoder mounting holes?
  2. Do the hollow shaft encoders have the "Thru" hole or "Blind" hole?
  3. What is the basic definition of an encoder?
  4. What is the difference between an absolute and an incremental encoder?
  5. What is a channel?
  6. What is quadrature and 4X (4 times) quadrature encoding?
  7. What is the Index pulse (strobe, Z, and I.)?
  8. How can I reduce the effect of noise when using encoders?
  9. What are "Push Pull" and "Totem Pole" outputs? Why don't they have a differential output?
  10. Do I need to shut down my machine to change an encoder?
  11. Q: What equipment do I need to troubleshoot an encoder?
  12. Can you repair an encoder?
  13. What is gray code?
  14. What are Excess Gray Codes?


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