XPost: uk.comp.os.linux, alt.comp.microsoft.windows   
   From: java@evij.com.invalid   
      
   On 2025-05-29 19:48, Theo wrote:   
   >   
   > In uk.comp.os.linux Java Jive  wrote:   
   >>   
   >> As I understand, the two halves of those testers slide apart and you can   
   >> put one half at each end to perform the test.   
   >   
   > Do you need to see both ends to run the test, or is one sufficient?   
   >   
   > I saw a video showing that a green light on each part scans down the numbers   
   > 1 to 8 then 'G'.  But I'm not sure if you are testing that the lights match   
   > at both ends, or if a fault is only shown at the end that detects it.   
   >   
   > (eg if you had open circuit at one end and a short at the other, what would   
   > it tell you?)   
      
   Well, I've not used one, so I'm guessing based solely on electronic   
   logic.  Hopefully, if I'm wrong, someone will correct me.   
      
   1)  If the cable was miswired by crossing two cables, then I'd expect   
   the lights at one end, most probably the remote end, to light in the   
   wrong order.   
      
   2)  If you have a short at one end, I'd expect two lights to be on at   
   the same time at least at that end, probably at both.   
      
   3)  If you have an open circuit, I'd expect the corresponding light at   
   one end or the other to fail to light.   
      
   But let's see if anyone can confirm what actually happens based on   
   actual experience.   
      
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