ZTE Corporation ZXMBW-RA25 用户手册
Chapter 7 Hardware Installation Check
Confidential and Proprietary Information of ZTE CORPORATION 71
Cable Installation Check
The cables of the RA25 include power and grounding cables,
optical fibers, and RF cables.
optical fibers, and RF cables.
The overall installation requirements are as below:
n
Various cables are straight and level, without evident wave
or deflection. There is no crossover or space jumper.
or deflection. There is no crossover or space jumper.
n
Cables must be bent smoothly and evenly and the outer part
of the bend must be as vertical or horizontal as a direct line.
of the bend must be as vertical or horizontal as a direct line.
n
Various cables must be attached with labels on both ends,
which must indicate the purposes of the cables. Labels on
both ends must have the same contents;
which must indicate the purposes of the cables. Labels on
both ends must have the same contents;
n
Every connector must be plugged reliably, correctly and in
good contact without being broken or bent.
good contact without being broken or bent.
n
Cable ties must be in good order, even spacing, and
appropriate tightness, and face the same directions. Extra
ties must be cut off down from their roots, without pointed
ends.
appropriate tightness, and face the same directions. Extra
ties must be cut off down from their roots, without pointed
ends.
n
The connecting terminals must be equipped with plain
washers and spring washers.
washers and spring washers.
Power and Grounding Cables
n
Power cables and signal cables must be laid separately, keep
distance no less than 200 mm between the two types of
cable.
distance no less than 200 mm between the two types of
cable.
n
Power and grounding cables must be made of a complete
piece of wire, without joints in the middle.
piece of wire, without joints in the middle.
n
Each grounding point on the grounding copper busbar must
be connected with one device only.
be connected with one device only.
n
The remaining length of each power/ground cable must cut
off, but not be coiled.
off, but not be coiled.
n
The lugs at both ends of the power/ground cables must be
welded or crimped securely.
welded or crimped securely.
n
The grounding cables must take the shortest route.
n
The bare wires at the connecting terminals and lug handle
must be tightly wrapped with insulation tape or put in a
heat-shrink tube instead of being exposed.
must be tightly wrapped with insulation tape or put in a
heat-shrink tube instead of being exposed.