Huawei NetEngine80E Installation Manual page 28

HUAWEI NetEngine80E Router
Installation Guide
3.1 Cable Assembly Precautions
Check cables and connector components, choose appropriate cables and connector components,
and assemble them according to the cable assembly precautions.
Checking the Appearance of Cables
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Checking the Appearance of Connectors
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Precautions for Assembly
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Issue 02 (2011-09-10)
If the cable jacket or insulation is visibly dirty, clean it before assembly.
If the jacket or insulation of a cable has visible damage, irreparable scuffing, or other
defects, do not use the cable.
If the shield layer of a cable is damaged, do not use the cable.
If the cable jacket or insulation cracks after the cable is bent or twisted, discard this cable
and check whether other cables have the same problem. If other cables have the same
problem, replace these cables.
Do not use connectors with visible defects, damage, rust or scuffing.
Do not use connectors if their pins or shells are damaged.
Do not use connectors that have dirt on their pins or in their jacks or if there are conductors
between pins or between pins and the shell.
Use dedicated tools or tools delivered by Huawei and follow the methods given here during
assembly.
Hold terminals of cables instead of pulling the cables when installing or removing cable
components.
Take the following precautions when cutting or stripping cables:
– Make cables slightly longer than necessary.
– Coil cables longer than 2 m (6.56 ft) after cutting. Bind and fasten the coils using
bundling ropes. The inner diameters of the coils should be larger than 20 times the outer
diameters of the cables.
– When stripping the jackets of cables, avoid damaging the shield layers (braid or
aluminum foil), insulation, core conductors, and other jackets that do not need to be
stripped.
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– Clean the exposed jackets. Cut all cables neatly.
– Do not touch the core conductors of cables with your hands. Terminate exposed
conductors in a timely way after stripping off insulation so that the surface of the
conductors does not become oxidized.
Take the following precautions when crimping and connecting cables or connectors:
– The terminals and conductors should be connected tightly after they are crimped. They
should not be moved or turned.
– Cut all the exposed copper wires.
– Try to avoid a second crimping of sleeves.
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3 On-site Cable Assembly and Installation
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