Serial Converters FAQ 22

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Frequently Asked Questions

Question 22: WHICH TYPE OF CABLE IS RECOMMENDED FOR RS-485 / RS-422 CONNECTIONS?

Answer: Inexpensive Cat 5 shielded cables (STP - shielded twisted pair) generally exceed the recommendations for RS-422 (although its characteristic impedance is 100Ω rather than the required 120Ω). This makes it an excellent choice for RS-485 and RS-422 systems.

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