107th IOC Session - LA84 Foundation

Cables
With every Olympic Games, there is always
a great demand on the cabling system. For the
Nagano Games, cables were utilised for telephones
and faxes, and also information systems
such as Info’98 terminals. To cope with this demand,
an integrated cable wiring system was installed
at 16 competition venues and 16
non-competition venues. Metal cable was used
for audio signals, while fibre-optic cable was
used for data information on the trunk cable between
the main cross connect and the horizontal
cross connect. The installation of the integrated
cable wiring system allowed for any changes in
position or increase in numbers of terminals to
be dealt with rapidly and easily. High-speed data
transmission functioned smoothly despite low
temperatures and high humidity, with not a single
case of failure.
Length of cable
Fibre-optic cable 37,900m
Metal cable 44,400m
CAT5 UTP cable (indoor use) 648,000m
Information outlets
Audio 8,782
Data 3,826
Timing Cables
Cables were integral to the timing and measuring
systems, reliably relaying competition
data for all the events.
Dual cables ensured high reliability, and
wherever possible, cables were laid underground.
Optical isolated distributors and internal
modems were developed to ensure that irregular
electric currents and surges in voltage would not
affect computer terminals.
To reduce digging in environmentallysensitive
national parks to an absolute minimum,
highly durable corrugated cables were
laid on the surface. Competition officials and
the Self-Defense Forces helped to lay cables
Bobsleigh and luge
events were timed to
1/1000 th of a second.
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