Shielded wirings are better than unshielded - only a few doubted this so far. But under practical operating conditions the difference between a shielded and an unprotected cabling system could not be shown so easily. The factors of influence were too complex within the electromagnetic compatibility (EMC).

Finally the results of a neutral investigation of the "Gesellschaft für HF-Meßtechnik (GHMT)" are presented. They prove that even standard EMC influences can disturb the data transmission significantly. Even more: they can also cause a computer crash, in one case they even caused the destruction of switch ports.

All details of this investigation, initiated by manufacturers of passive components and cables, can be read in the PDF files below.