JDSU TP500 Betriebsanweisung PDF herunterladen (Seite 10)

Interpreting Results

Definition of Errors – (See “Examples

of Wiring Errors”) The four fault lights are

discussed below in order of severity. The

severity has to do with the ability of the type

of error to mask lower severity errors. For

example, if there is a short in the cable,

miswires, reversals and split pairs cannot be

detected for the pairs involved in the short

fault. Multiple faults on multiple pairs can be

better understood by using the debug mode to

examine the errors one pair at a time.

Short – The pair has a low resistance

connection from one wire of the pair to the

other wire of the pair or to any other wire in the

cable or the shield. A single flashing pair light

and the short light indicate a short within the

pair. Multiple flashing pair lights and only the

short light indicate shorts between the pairs

involved.

Miswire – A wire or both wires of a pair are not

connected to the correct pins at the other end

of the cable. Debugs “from–to” format is very

helpful in visualizing what the specific miswire

is.

Reverse – A reverse is a special case of a

miswire in which the pair is wired to the correct

pair of pins or to another designated pair of

pins, but the two leads are reversed.

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JDSU TP500 Betriebsanweisung Seite 10