XPost: uk.comp.os.linux, alt.comp.microsoft.windows   
   From: theom+news@chiark.greenend.org.uk   
      
   In uk.comp.os.linux Java Jive  wrote:   
   > On 2025-05-29 17:34, Theo wrote:   
   > > Either that or an RJ45 socket at each end and a multimeter.  But the tester   
   > > makes it quicker.   
   > >   
   > > (can't speak for that tester - you need to test for open circuits, shorts   
   > > and mis-wired pairs and I can't tell if it does that.  In particular if   
   it's   
   > > structured wiring you need to be able to test from one end because you   
   can't   
   > > see both ends at the same time as the cable runs through the building -   
   > > unless you can run a long patch cable back to the start)   
   > 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?)   
      
   Theo   
      
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