Checkpoint LAB USB-RS232 Manual de usuario Pagina 18

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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
35
TWISTED PAIR
What is does: Cancels out crosstalk from neighboring
wires and electromagnetic interference from
external sources
36
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