🚀 go-pugleaf

In article <1992Dec15.202004.15878@ucsu.Colorado.EDU> barr@tramp.Colorado.EDU (BARR DOUG) writes:
>Some specs I have call for ethernet coax to be grounded in one location
>and one location only! I am wondering why this is. Antenna effects,
>current loops or something else. Does anyone know why this is the case?
>
We recently had an experiance on this : one of our thin ethernet segments was
mistakenly grounded by a monitor cable case and the whole ethernet was 
slowed down drastically. Collision rate incresed from the normal(0.1 %) to
about 30 %. The reason is the 50 Hz (Power frequency) interferences which
come from the different potentials of groundings which in turn cause 50 Hz
current to flow in ethernet cable shielding and thus cause interference
voltage loss to generate.

--Timo--  tp@vitech.fi (Vaasa Institute of Technology)