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D865GLC Motherboard Manual
Viglen, EMC and the ‘CE’ mark
European standards are being harmonised across borders. If products comply to the same standards in all
European countries, product exporting and importing is made simple - paving our way to a common market. If
you buy a product with a 'CE' mark on it (shown below), on the box, in the manual, or on the guarantee - it
complies with the currently enforced directive(s).
Introduction to EMC
EMC (Electromagnetic Compatibility) is the term used to describe certain issues with RF (Radio Frequency)
energy. Electrical items should be designed so they do not interfere with each other through RF emissions. E.g.
If you turn on your microwave, your television shouldn't display interference if both items are CE marked to the
If emitted RF energy is not kept low, it can interfere with other electrical circuitry - E.g. Cars Automatic Braking
Systems have been known to activate by themselves while in a strong RF field. As this has obvious
repercussions ALL electrical products likely to cause RF related problems have to be 'CE' marked from 1st
January 1996 onwards.
If a product conforms to the EMC directive, not only should its RF emissions be very low, but its immunity to RF
energy (and other types) should be high. The apparatus has to resist many 'real world' phenomena such as
static shocks and mains voltage transients.
Viglen’s Environment laboratory
To gain a 'CE' mark, the Viglen computer range has had to undergo many difficult tests to ensure it is
Electromagnetically Compatible. These are carried out in the in-house 'Environment lab' at Viglen Headquarters.
We have made every effort to guarantee that each computer leaving our factory complies fully to the correct
standards. To ensure the computer system maintains compliance throughout its functional lif