Operation Manual

DTX Series CableAnalyzer
Technical Reference Handbook
6-2
Common Causes of Copper Cabling
Failures
Table 6-1 describes common causes of test failures on
twisted pair and coaxial cabling.
Table 6-1. Diagnosing Twisted Pair Test Failures
Wire Map: open
• Wires connected to wrong pins at connector or
punchdown blocks
• Faulty connections
• Damaged connector
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.
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).