On Sat, 6 Mar 2004, Patrick Dunford wrote: [...] > What can cause noise on network cables? I'm interested because I spend a [...]
One more witness for power cables. I once worked in a building with a large mechanical engineering workshop on the ground floor, all modern engineering machines, lathes, drill presses, milling machines, heaps of nice inverter drives... the power cables went from there up to the third floor, and the network cables were right next to them over the distance of three levels, i.e., some 15 m. The network was not very usable until they changed the setup. There are several measures against this kind of problems. The obvious is to stay away from the power cables for as much of the cable length as possible. Network cables also should not be unnecessarily long to prevent excessive noise pickup. If you have to go parallel and close to power cables, you might consider fibre-optic Ethernet for these connections. A cheaper alternative is to use shielded cables (if the ones you currently have are not shielded). Kind regards, Helmut. +----------------+ | Helmut Walle | | [EMAIL PROTECTED] | | 03 - 388 39 54 | +----------------+
