March 2014
71
News
Technology
Traditionally, Reichle & De Massari has
a strong position in technology for both
shielded and unshielded systems for data
centres, office cabling and fibre-optic
technology.
This makes it possible for the company to
offer professional, unbiased advice to the
customer to find the optimum solution
together, be it shielded or unshielded, to
last through several generations of active
equipment.
The newly introduced WAve Reduction
Pattern (WARP) technology is a prime
example.
This
accommodates
the
demands placed on such systems by
the rapid uptake of 10GBase-T data
transmission.
Transmitting at 10 Gbit/s involves the
use of a sensitive, high frequency coding
method. The sampling rates and the
number of voltage values are many times
higher than for 1000Base-T. As a result,
susceptibility to interference increases
by a factor of 100, due to the slight
differences in potential between input
signals from one bit level to the next.
This is caused by the rise in cable
attenuation at these high frequencies,
and by the increased coding. In order for
10GBase-T to work correctly, it is crucial
to control and suppress interference from
outside the cables.
Innovative WARP technology combines
the protection of shielded cable with
the convenience of unshielded cable.
To achieve this, the system is partially
‘shielded’ by adding short, isolated
sections of shielding (metal foil) to the
cable.
Because there is no continuous
shielding, it does not need to be
earthed. The length of each shielding
section is chosen so that no standing
waves can develop and produce
negative effects in the frequency range
up to 500MHz.
Used in system, WARP technology
allows ANEXT reserves that were
previously
only
possible
with
shielding. This means there is no
need for follow-up measurements
of this parameter in the installation.
Measurements are guaranteed by the
layout of individual components.
WARP cables offer a further advantage
for Power over Ethernet (PoE). The
integrated aluminium foil and thin cable
sheath ensure heat generated in this
cable by power transfer is lower than in
comparable traditional cables, reducing
ageing of plastic materials and allowing
longer cable runs.
Reichle & De Massari – Switzerland
Website
:
WARP solution for unshielded
10GBase-T
PS Construzioni has launched a
new model of payoff cantilever
and dancer. The new payoff can
be used for both insulated and
non-insulated (copper) cables,
while the sensitive dancer can
process cables with a small
cross-section (0.15mm
2
).
The unit is designed to provide
controlled and consistent tension
throughout
the
unwinding
process of acceleration, maximum
speed and deceleration.
Reel loading and unloading is
fast and automatic; the operator
needs only to place the reel and
select the reel diameter. The
reel loading and unloading is
by means of a steel platform
activated
by
a
pneumatic
cylinder. This platform has two
movements: vertical for reel
loading/unloading, and horizontal for
removing the reel.
PS Costruzioni – Italy
Website
:
Fast and automatic payoff cantilever and dancer
▲
▲
The new model payoff cantilever and dancer from PS
Costruzioni
