Chapter 3: Certify Twisted Pair Cabling
Twisted Pair Autotest Results
107
Propagation delays vary slightly among pairs because of small
differences in electrical characteristics and length. The tester uses
the propagation delay for each pair and the NVP for the cable
type to calculate the length of each pair. The tester subtracts the
propagation delays for the link interface adapters, so the length
results do not include the length of the cables on the permanent
link adapters.
Delay skews are the differences in propagation delays between
the shortest delay and the delays of the other wire pairs. The
shortest delay shows as “0” in the delay skew results.
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