
B–63003EN/04
D. OPTICAL FIBER CABLE
497
Electrical/optical conversion module Lid
Optical fiber cable
Optical fiber cable caps
Fig. D.3 Protection of electrical/optical conversion module and optical fiber cable (when not in use)
(2)Optical fiber cable
• Although the reinforcing cover of the external cable has sufficient
mechanical strength, be careful not to drop heavy objects on the
cable.
• Grasp the optical connector firmly when connecting or
disconnecting the cable. Do not pull on the optical fiber cord itself.
(The maximum tensile strength between the fiber cord and
connector is 2 kg. Applying greater force to the cord is likely to
cause the connector to come off, making the cable unusable.)
• Once connected, the optical connector is automatically locked by
the lock levers on its top. To remove the connector, release the lock
levers and pull the connector.
• Although optical connectors cannot be connected in other than the
correct orientation, always take note of the connector’s orientation
before making the connection.
• Before installing an external cable, fix either a wire with a hook or
a tension member to the reinforcing cover of the optical connector
and pull the wire or tension member, as shown in Fig. D.4. This
is done to prevent a tensile force from being applied between the
fiber cord and connector. If no tensile force is applied between the
fiber cord and connector when installing the cable, you can hold the
reinforcing cover of the connector directly and pull it. In the case
of an internal cord, which does not have a reinforcing cover, apply
the same protective measures, as instructed in Fig. D.4, for that
portion of the cable where the two cords are bound together, in
order to prevent a tensile force from being applied between the fiber
cord and connector. In the same way as for an external cable, if no
tensile force is applied between the fiber cord and connector during
installation, you can hold the shielded part of the cable directly and
pull it. Because the combined tensile strength of the two cords is
only 14 kg, however, avoid applying too great a force to the cable
during installation, regardless of whether you have taken the
protective measures.