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Chapter 2: How to Certify Twisted Pair Cabling
Twisted Pair Autotest Results
39
Twisted Pair Autotest Results
The tests listed below apply to twisted pair cabling.
Note
Some tests are not included in some test limits.
Wire map
Resistance
Resistance unbalance
Length
Propagation delay
Delay skew
Insertion loss (attenuation)
Impedance
NEXT (near-end crosstalk)
PS NEXT (power-sum near-end crosstalk)
ACR-N (attenuation to crosstalk ratio at the near end)
PS ACR-N (power-sum attenuation to crosstalk ratio)
ACR-F (equal level far-end crosstalk)
PS ACR-F (power-sum equal level far-end crosstalk)
Return loss
TCL (transverse conversion loss)
CDNEXT (common-mode to differential mode near-end
crosstalk)
CMRL (common-mode return loss)
ELTCTL (equal level transverse conversion transfer loss)
HDTDR and HDTDX analyzers (optional tests, not required by
any test limit)
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