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S TRU CT U R ED CA BLING
Shielded vs. unshielded
One of the key factors for using shielded cables is if So why not always use shielded cables? First of all,
the cables are used in an environment with a lot of EMI shielded cables are more stiff than unshielded cables and
(electromagnetic interference). EMI can cause crosstalk are more difficult to install. They are also more expensive
between circuits, resulting in degradation of data, than unshielded cables.
increased errors, and slower transmission rates. The shielded cables often have a larger diameter that
Although unshielded UTP cables reduce some EMI, takes up more space in the conduit. Unshielded cables
shielded STP cables block interference more effectively. actually provide you with faster transmissions in the
absence of EMI.
LSZH
We supply a large range of network cables which
are Low Smoke Zero Halogen (LSZH). This
means that these cables are built with a jacket
with zero halogen which is flame-retardant.
This type of jacket material has excellent fire
safety characteristics such as low smoke, low
toxicity, and low corrosion. The material is used in
applications for central offices, mass transit rail
systems, nuclear plants and oil refineries or in any
other application where the protection of people
and equipment against toxic and corrosive
gasses is extremely important.
Performance categories
ISO/IEC 11801 EN 50173 Cable type Max. frequency Impedance Application
Cat5 Class D UTP/ S/FTP 100 MHz 100 Ohm 100Base-TX, SONET,SOH
Cat5e Class D UTP, F/UTP, S/FTP 100 MHz 100 Ohm 1GBASE-T
Cat6 Class E UTP/F/UTP, S/FTP 250 MHz 100 Ohm 1GBASE-T, 155-Mbit-ATM,622-Mbit-ATM
Cat6a Class Ea UTP/ S/FTP 500 MHz 100 Ohm 10GBASE-T
Cat7 Class F S/FTP 600 MHz 100 Ohm 10GBASE-T (up to 100 meters)
Cat7a Class Fa S/FTP 1000MHz 100 Ohm 10GBASE-T
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