Install Manual

BRITECELL System Manual MN010-04 June 2003 Page 64 of 78
The company has a policy of continuous product development and improvement and we therefore
reserve the right to vary any information quoted without prior notice.
58.3.2. Optical Cable Laying
Fiberoptic cables can be pre-terminated with appropriate fibre connectors,
however, this often times causes problems if there is not enough space to pull
through the connector, or if the cable lengths become very large. A qualified
installer can make a recommendation on this matter. It is always recommended
that extra fibre length be provisioned. The common (and recommended) method
is to run the fibre cables without connectors attached and splice short pre-
connectorised tails onto the fibre. This avoids damaging connectors in the cable-
running process and ensures that adequate length is available at each end for
correct routing and strain relief.
Note that angled connectors cannot be fitted in the field due to the accurate
polishing process required; there is no significant loss in performance due to a
fusion splice.
Inside the optical cable trunk, other kinds of cable cannot be installed.
The optical cable must not be stressed as this can cause a high insertion loss, and
it could therefore break. For this reason it is important not to squeeze the cable,
for example tightening the fixing stripes too much.
It’s a good rule of thumb to avoid bending the optical cable within a radius of less
than 10 cm. Consequently, the cable trunk installation must be done respecting
that norm.
The following are pictures of actual cabling, one correct, one incorrect.
WRONG BETTER
fig. 51 - system cabling