Namely about ethernet, you plug in the cable and it tells you the length, nothing on the other end or anything else, and i have no idea how to google for that as every time i do i just get a “take the device and plug the cable in” kinda result. If nothing else tell me what to google.
In: Technology
It is called a TDR. Time domain reflectometer. A “signal” energy source is sent down the cable when it encounters a short,termination, or a open ,not terminated, it send back a inverted signal to the machine. Using signal propagation it measure the distance.
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