rvdm@oce-rd2.UUCP (Ruurd van der Meer) (11/27/85)
I am wondering what measures can be taken to avoid x-million dollar damage by lightning on local network cables like Ethernet. * * * ***** * * * *** ** * The standard says : the shield conductor of each coaxial cable segment shall make electrical contact with an effective EARTH- reference at ONE point. A lightning on the other side of the segment can destroy a lot of interface units and possibly more. We at OCE have a lot of buildings with Ethernet in between. An expensive solution is using optical ways to seperate. I know there are 'spike-' or 'surge-' suppressors to be put in coaxial cables. The one I know are for IBM (93 ohm) cabling. Does anyone know such suppressors for Ethernet cable (50 ohm) ? What about reflections with these suppressors ? All ideas to avoid lightning problems on networks are welcome! Ruurd van der Meer OCE NEDERLAND BV Netherlands// Venlo *****************************************************************