Reply to post: Communications standards

Margin mugs: A bank paid how much for a 2m Ethernet cable? WTF!

Electronics'R'Us
Holmes

Communications standards

There are numerous standards that have little or nothing about cable length (Ethernet has a minimum length, interestingly - that bit a colleague who was designing [as part of a team] an airborne mission computer and had a tiny ethernet based network across the various processor cards).

Generally the various standards will specify maximum cable attenuation (Infiniband originally did so as part of the link budget) or some other metric (I have seen eye closure and S parameters both used in this context) as different materials will have differing characteristics so the distance you can get from a set of different cables can vary by 2:1 or more.

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