How do these cable testers measure length? Do they measure the time the signal travels or do they use the resistance to calculate length?
>>103242722Resistance
>>103242734Resistance and the time it takes for the signal to return. It's really simple.
>>103242722Clearly wire spiders.
>>103242722Cable testers are basically time-domain reflectometers (TDR). It sends a signal and measures the time of reflection.
>>103242722nanobots, son
>>103242722there's a fast little man with a tape measure inside
>>103242722you getting Stevie Wonder to crimp your shit or what
not resistance, otherwise it will be inaccurate with different wire gauges and copper clad aluminium wire
>>103242722Reflection time shift. Only way to do it if you only have one side of a transmission line plugged in. If you had two sides you could factor in loss but then you'd have to know the cable impedance. Although, I guess you can probably assume a certain impedance if you know it will be a cat 6 cable.
>>103242764thisthe people saying it's simple resistance are dumb
>>103242764+1 karma, the only correct answer.
>>103243298>there's a cute anime girl in a maid costume with a tape measure insideftfy
