Enhanced
Performance:
Enhanced
Category 5 is now the MINIMUM performance category recommended
by the TIA for data communications.
Consider this: Our
enhanced system gives you an additional 6.8 dB headroom over
Cat 5e for NEXT at 100 MHz. Your equipment hears less than
one-quarter of the crosstalk permitted by Category 5. Enhanced
Category 5e cable even provides low power sum crosstalk and
low skew. Both of these parameters are be important for
applications such as 1000BASE-T and other future applications
which may deploy multi-pair transmissions.
The
performance gains of the AMP NETCONNECT Enhanced Category 5
System provide an infrastructure that makes it easier to
migrate to new network systems require four-pair transmission,
like 1000BASE-T Ethernet, while providing increased
performance for today's applications. Because of its increased
performance, it's easier to install and certify. You get
greater signal integrity, increased reliability, and fewer
administrative headaches. And like all AMP NETCONNECT systems,
it gives you a performance-based system instead of one tied to
specific applications.
Structure Means
Application Independence:
A
modern cabling system is a structured system that typically
meets the requirements of TIA/EIA-568-B and ISO 11801. These
standards are performance-driven and application-independent.
They specify levels of performance at both the component and
the system level. Any application that specifies these
performance requirements will run well on the cabling plant.
The standards for Category 5e UTP allow 100 MHz operation over
a 90-meter horizontal run. Thus no mention is made of
Ethernet, Token Ring, Fast Ethernet, FDDI, ATM or other
popular network standards. Why? Because all of these
applications contain requirements that are well within the
performance specifications established by TIA/EIA-568-B and,
more specifically, Category 5e UTP. The standard is generic,
created not for specific network systems but for specified
levels of performance. That's why AMP rates the performance of
its cabling systems to cabling specifications rather than to
application specifications.
This is a very important consideration in understanding
cabling systems: the system does not have to be tested or
certified to a specific application; it need only be
performance-tested to the TIA/EIA-568-B or ISO 11801.
Remember, there is a difference between bandwidth (MHz)
requirements and transmission rates (Mbps). Some people tend
to equate data rates with frequency/bandwidth requirements.
Most often they are not the same, and this is especially true
for emerging high-speed applications. The method used to
encode the information can mean a high data rate at a low
bandwidth. TP-PMD (UTP-based FDDI), 100BASE-TX Fast Ethernet
and 155-Mbps ATM are examples of applications that have
transmission rates exceeding 100 Mbps, but which require a
much lower bandwidth (MHz) to operate and are specified to use
Category 5 systems. In other instances- notably 1000BASE-T -
the signal is divided among pairs and transmitted in a
parallel fashion, further reducing bandwidth required.
