Checkpoint LAB USB-RS232 Uživatelský manuál stáhnout pdf (Strana 18)

STEP 6 HARNESSES

HARNESS -TWISTED PAIR

When purchasing harness cable:

• Unshielded Twisted Pair (UTP)

• Shielded Twisted Pair (STP)

• Purchase or make your own! To make your own, start with 10’ to

50’ of wire and wrap with an electric drill to get the desired wrap.

Study the manufacturer’s Specification to match to

your needs.

Practical Design Considerations – What are twisted pairs?

http://www.cirris.com/testing/twisted_pair/twist.html

TWISTED PAIR

What is does: Cancels out crosstalk from neighboring

wires and electromagnetic interference from

external sources

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Checkpoint LAB USB-RS232 Uživatelský manuál Strana 18