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Characteristic impedance exceeds the limit or an anomaly is detected
•
Bad connection
•
Cable compression (tight cable ties, pinches, kinks, etc.)
•
Mismatch of cable types
•
Excessive loading at coaxial cable tap
•
Incorrect terminator value (coaxial cable)
Resistance gives FAIL, FAIL*, or PASS* result
•
Cabling is too long
•
Bad connection due to oxidized or loose contacts
•
Wire gauge is too thin
•
Wrong patch cord type used
Length gives FAIL result
•
Cable is too long (may need to remove coiled service loops)
•
NVP is set incorrectly
Table 4-1. Diagnosing Twisted Pair Test Failures (cont.)
Diagnosing Twisted Pair Cabling Faults
Common Causes of Twisted Pair Test Failures
4
-continued-
4-7
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