On 27/11/2021 22.20, James Knott wrote:
On 2021-11-27 3:59 p.m., Carlos E. R. wrote:
I agree but if Carlos makes his own then perhaps he has an Ethernet cable tester? (full disclosure, I'm sad enough that I do) If so then testing the cable is definitely something to try.
No, I don't. And certainly not a gigabit tester, I might have bought one for 100 mbits back then. No, I tested by connecting them and watching the error rate after transmitting files in both directions.
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Continuity testers are cheap. They'll tell you if the cable is wired correctly, open connections, etc..
A continuity tester is not enough. I have a normal multimeter which can be used with some care to test an ethernet cable. But a continuity tester doesn't find out if the pairs are connected properly: you know that the two pin in the centre are a pair, surrounded by another pair, but pins 1&2 are a pair. It is not 1&2, 3&4, 5&6, 7&8 (which makes it a pain to connect the cable to the jack, it uses a weir sorting. AND if you don't follow the proper sorting (there were cables like that), a proper tester finds out. The cable works at 10 mbps, but not 100 mbps. But in both cases, good and bad, an continuity testers finds no problem (pin 4 is connected to pin 4 on the other end, etc). -- Cheers / Saludos, Carlos E. R. (from 15.2 x86_64 at Telcontar)