FROM LUCENT TECHNOLOGIES
Lucent Technologies was the manufacturer of SYSTIMAX structured cabling
systems (later acquired by CommScope). Several years ago, this
company conducted extensive testing for its SYSTIMAX. Structured
Cabling Solution regarding power separation and electromagnetic
compatibility and published the following recommendations and
We are not aware of the current status of EMI design guidelines from
this manufacturer but we have all reasons to believe that they still
apply provided by all the specific requirements, such as "powering typical office equipment", are met.
- Lucent Technologies published several tables containing
power separation information in its "SYSTIMAX SCS Design Guide"
depending on power conductor cross-sectional area, maximum current,
cable length etc. In many cases, SYSTIMAX installations of cable
lengths of up to 90 m require zero separation distance when adjacent
power circuits are powering typical office equipment and limited to 250
Volt, 20 Amperes. Other separation distances vary from 0.02 to 0.8 m.
- SYSTIMAX SCS Power Sum and GigaSPEED cables require no separation when placed above or adjacent to fluorescent light fixtures.
- Lucent Technologies tested SYSTIMAX SCS susceptibility to
GSM cell phone emissions using 100 Mbps Fast Ethernet and 155 Mbps ATM
network protocols. All channels remained error-free even when the
antenna of the cell phone was placed directly on the cables or
For more information, contact current manufacturer of SYSTIMAX cabling system at http://www.systimax.com