User`s guide

Chapter 6 Interpreting Test Results
Interpreting Cable Test Results
LanScaperPRO Network Tester User’s Guide 71
Short
The pair has a low resistance connection from one wire of
the pair to the other wire of the pair, to any other wire in
the cable or the shield.
Miswire
A wire or both wires of a pair are not connected to the
correct pins at the other end of the cable. While testing
with a remote, the wiremap shows the connections
between the upper line of pin numbers on line 1 (main) to
the lower row of pin numbers, line 2 (remote). In single-
ended test mode, this type of error is not detectable.
Reverse Pair
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. In single-ended test mode,
this type of error is not detectable.
Split Pair
A split pair is an error in the twisting of the wires together
within the cable. The cables generally are made up of
eight wires twisted together in 4 pairs. These 4 pairs are
designated as pairs by the wiring standards and are
intended to carry a signal and it’s return. 1&2, 3&6, 4&5
and 7&8 are the pairs designated by T568A/B for a RJ45
jack or plug. A cable can be wired with correct continuity
but not with correct pairing. This most often happens
when the cable is terminated consistently at both ends,
but in the wrong order. A dynamic or AC test is required to
detect this type of error. If the only error is a split pair error,
LanScaperPRO_User_Guide.book Page 71 Friday, January 25, 2008 1:14 PM