Hitachi CMU Series User Manual page 95

5 USER GUIDE
Connector
Bending radius of
at least 80 mm
Check the connector retainer lock. After the connector retainer is locked, pull the
connector lightly to make sure that it is firmly locked.
(6) Tips on laying twisted-pair cables
Use twisted-pair cables on a 10BASE-T system.
Do not overbend twisted-pair cables (suggested bending radius: at least four times the
cable outside diameter).
Do not overpull twisted-pair cables (tensile strength: 11 kg or less).
Do not overtighten twisted-pair cables (when securing the cables with clamps, SK bands
or the like, do not tighten to such extent that the covering is deformed).
When attaching a connector to an equipment port, click it into position.
(7) Common tips on laying cables
If the cables are laid together with a high-power cable or network power cable, the current
flowing through the high-power cable/network power cable may act as a noise source to
induce a noise voltage within the cables, thereby causing a malfunction. To avoid this
problem, lay the cables at a proper distance from high-power cables and network power
cables as suggested in the table below:
Table 5-2 Network Power Cable Ratings and Distances
Figure 5-10 Laying Transceiver Cables
Network power cable rating
2 kVA or less
2 to 5 kVA or less
5 kVA or more
Clamp the cable to protect the
transceiver cable from tension. The
connector could develop defective
contact under constant force.
Distance
127 mm or more
305 mm or more
610 mm or more
5-10