Fluke CableIQ, User Manual

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Locating Crosstalk and Impedance Faults on Twisted Pair Cabling
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Table 3. Crosstalk and Impedance Fault Messages
Cabling too short for diagnostics No cabling is connected to the tester, or the cabling is too short to test.
Cabling too long for diagnostics The cabling’s length is beyond the tester’s range.
No significant crosstalk
No significant impedance fault The crosstalk or impedance is acceptable for the selected application.
Crosstalk fault
Impedance fault A localized crosstalk or impedance problem was detected. Localized faults are
usually caused by bad connections. Check the cabling at the location given.
Distributed crosstalk faults
Distributed imped. faults Crosstalk or an impedance problem was detected along most or all of the cabling.
The cabling is of poor quality or is the wrong category for the selected application.
Marginal ELFEXT for 1000BASE-T Equal-level far-end crosstalk measurements are marginal.
Short or possible bridge tap The impedance is very low at the location given. Check for a short or bridge tap.