Certifying Twisted Pair Cabling
Twisted Pair Autotest Results 3
3-9
Twisted Pair Autotest Results
The tests listed below apply to twisted pair cabling.
Note
The Autotest runs some or all of the tests listed
below, depending on the selected test limit.
• Wire map
• Resistance
• Characteristic impedance
• Length
• Propagation delay
• Delay skew
• Insertion loss (attenuation)
• NEXT (near-end crosstalk) and NEXT at the smart
remote
• Return loss
• ACR (attenuation to crosstalk ratio) and ACR at the
smart remote
• PSACR (power-sum attenuation to crosstalk ratio)
and PSACR at the smart remote
• ELFEXT (equal level far-end crosstalk)
• PSELFEXT (power-sum equal level far-end crosstalk)
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