Common Causes Of Copper Cabling Failures - Fluke CableAnalyzer DTX-1500 Technical Reference Handbook

DTX-1500 CableAnalyzer
Technical Reference Handbook
Common Causes of Copper Cabling
Failures
Table 6-1 describes common causes of test failures on
twisted pair and coaxial cabling.
Wire Map: open

Wires connected to wrong pins at connector or
punchdown blocks

Faulty connections

Damaged connector
Wire Map: split pair or reversed pair
Wires connected to wrong pins at connector or punchdown block.
Wire Map: crossed wires

Wires connected to wrong pins at connector or punchdown block.

Mix of 568A and 568B wiring standards (12 and 36 crossed).

Crossover cables used where not needed (12 and 36 crossed).
6-14
Table 6-1. Diagnosing Twisted Pair Test Failures
Tip: The wire map test in Single Test mode features a
scanning function that runs the wire map test
continuously. This function is helpful for locating
intermittent wiring faults.