I heard about a tester which measure the lenght of the cables, but I don't know how it work. Does it measure only the resistence cable or does it measure even inductance and/or capacitance? When I do the measure do I have to connect end cables or have I to leave ends opened? Thanks.
lenght cable tester?
Feb 15, 2005
1 Replies
Some ethernet PHY chips have this built in. I believe they measure the delay of a pulse and it's reflection off of the unterminated end of the cable. They can use this to report opens, and how far they are away from the PHY.
Regards,
Robert Monsen
"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.
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