JDSU TP350 Guida Utente Scaricare il pdf (Pagina 17)

Interpreting Cable Test Results

The Pass icon will be on if the cable has

all pins properly connected per T568A/B

for network cables or per 3-pair USOC for

telephone cables. The Fail, Short, Open or

Split icon will be on if there is a wiring error.

The wire map will display the end-to-end

connections measured whenever possible.

The Pass icon will also be on with a flashing

Uplink icon if a network cable has the 1-2

and the 3-6 pairs transposed to indicate a

properly wired uplink (crossover) cable. In

Telephone mode, the Rev icon will flash if all

connected pins are in reverse order and the

Pass icon will also be on if all 6 connections

are present. Telephone modular plug cables

used between the wall jack and a phone set

are usually reverse pinned.

Definition of Errors - (See failure example

drawings) The three classes of faults

discussed below are in order of severity.

The severity has to do with the ability of

a more severe error to mask less severe

errors. For example, if there is a short in the

cable, miswires and split pairs may not be

detected for the pairs involved in the short

fault.

Short - The pair has a low resistance

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JDSU TP350 Guida Utente Pagina 17