[rescue] Cable testers

[Phil Stracchino]

On 04/22/16 20:07, Mouse wrote:
>> Yeah, I'm not looking for certification, I just want to be able to
>> test that the cable's wired correctly with no short, opens, or split
>> pairs.
> 
> You say that so casually.  Shorts and opens are easy to test for; split
> pairs are...less so.
> 
> I'm curious: does happen to anyone know what property testers capable
> of detecting split pairs are actually testing for?

In the simplest terms, a conductor goes to the wrong pin.  A common
example I've seen made by the unaware or inattentive:  Solid-green and
solid-blue, or green/white and blue/white, accidentally swapped.
(Especially on some cables where you need to have the color vision of
Vincent van Gogh to tell green/white and blue/white apart.)


-- 
  Phil Stracchino
  Babylon Communications
  phils at caerllewys.net
  phil at co.ordinate.org
  Landline: 603.293.8485