Should be easy to build one if all you want is to check for opens and shorts.One is safer if they take 2 lap tops with them and be sure the wire is in good shape.Sharp bends can damage the wire for computers and an ohm meter will not find it.If anyone can come up with a better tester let me know as my son and i are starting up a computer and cableing buisness.
Originally posted by jimwalker: If anyone can come up with a better tester let me know as my son and i are starting up a computer and cableing buisness.
I was just looking at Surface Transfer Impedance. It's a measure of the effectiveness of a cable's shielding.
An external field induces a current in the cable's shield. The current in the shield cause a voltage difference between the shield and signal conductor.
a muti-tester If I have the cables already hooked up and want to test them. I'm tired of lugging a TV and Phone around. The ethernet would just be a bonus but not for a real need