R&M Solution for Energy Efficient Ethernet

What is happening
Saving energy is becoming increasingly important for responsible operators of data networks. This is precisely why Energy Efficient Ethernet (EEE) was introduced as an extension to the Ethernet standard. Twisted pair copper cabling can now also make an effective contribution when it comes to saving energy. You simply shorten the transmission links. Active devices can then reduce their transmission power and their energy consumption. But it is not quite as simple as that.

Good to know
It is not always possible to use short links in all environments. Attenuation (Return Loss, RL) and crosstalk (NEXT) are obstacles when it comes to the arbitrary shortening of links. This is why the standard stipulates a minimum link length of 15 meters. That has consequences. A lot of cable material has to be stored in cabinets, floors and cable guides. And that is expensive, dubious and a contradiction to the principles of today’s ecological aims.

If, however, premium connection modules and the very best cables are used, you end up with greater reserves for signal transmission. Attenuation and crosstalk have less of an effect. And the length of the permanent links can be reduced.

Statement
The top-quality Cat. 6A ISO modules from R&M and the cables from R&M’s High Performance Network Connectivity (HPNC) solution support the approach described. They make it

possible to install 10GBASE-T links from two meters in length. A best-case scenario consequently has up to 13 meters less cable. The links still meet all demands of ISO / IEC 11801 Amendment 2, particularly the critical parameters NEXT and RL.



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Dr. Jan Kupec

By Dr. Jan Kupec

Innovation Project Manager