JDS Uniphase TestifierPRO, Руководство пользователя

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24
Interpreting cable Test Results
The PASS icon will be displayed if the
cable has all pins properly connected
per T568A/B for network cables or per
3-pair USOC for telephone cables. The
FAIL icon will be displayed 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 displayed
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 “Reversed
Pin” message will be displayed if all
connected pins are in reverse order and
the PASS icon will also be displayed
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 four 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
lower severity errors� For example, if
there is a short in the cable; miswires
and splits pairs may not be detected for
the pairs involved in the short fault�