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I. What are the connection devices in the integrated wiring,
indicating their use.
1. Cable connection device
1) Network module, panel and bottom box
The network module is also divided into a shielding module and an
unshielded module. The shield module completely shields the
external electromagnetic waves from the internal circuits through
the shielded enclosure. Therefore, its shielding layer needs to be
connected with the shielding layer of the twisted pair to form a
complete shielding structure.
2) Network Distribution Frame
The distribution frame is the most important component in the
management subsystem, and it is the hub that connects the two
subsystems of vertical and horizontal wiring. Patch panels are
usually installed in cabinets or walls.
3) Communication jumper
The communication jumper and the distribution frame have the same
function, and are all designed to prevent long-term plugging and
unplugging, resulting in loose and damaged interfaces. Therefore,
use jumpers and patch panels to solve the connection problems
between devices. The difference is that the communication jumper is
mainly used in voice wiring system. The 110 distribution frame is
generally used, which is mainly the connection and jumper between
the connection of the upper-level program-controlled switch and the
connection line of the voice information point to the desktop
terminal, so as to facilitate management, maintenance and testing.
4) Network crystal head
There are two kinds of crystal head, one is RJ45 and the other is
RJ11. RJ45 is an international standard connector, RJ11 is a
non-standard connector.
2. Optical cable connection devices (ST connector, SC connector, FC
connector, type 86 fiber back box, type 86 fiber panel)
Optical cable connection device refers to a connector that enables
two optical cables to transmit optical signals at the end of the
optical cable. Its purpose is to maximize the optical energy output
from the transmitting fiber into the receiving fiber and to
minimize the impact on the system due to its intervention in the
optical link.
3) What are the common tools in the integrated wiring process?
1. Copper Cable Kit
2. Fiber Toolbox
4) Briefly explain the function of the line pipe, trunking and
bridge, and explain what type of bridge is available.
The line pipe is an indispensable accessory in the integrated
cabling project. Generally, the PVC line pipe is used. The matching
materials include the pipe card, connector, elbow, and three links.
The wire trough is also known as a wire trough, a wiring trough,
and a line trough, and is a wiring tool used to standardize wire
rods such as power cables and data cables, and is fixed on a wall
or a ceiling. Trays are generally made of plastic and metal and can
play different roles.
Tray Bridge Display System: Tray type cable tray is the most widely
used bridge equipment. It has many excellent features, light
weight, large load, attractive appearance, simple structure, and
easy installation. It not only applies to the installation of power
cables, but also applies to the laying of control cables.
Trough bridge display system: trough cable tray, is a fully
enclosed cable tray, it is most suitable for laying computer
cables, communication cables, thermocouple cables and other highly
sensitive system control cables in the shielded interference and
heavy corrosion environment Cable protection has a good effect.
Cascade bridge system: Cascade cable bridge has characteristics of
light weight, low cost, unique shape, easy installation, good heat
dissipation, good air permeability, etc. It is suitable for the
laying of larger diameter cables in general, especially for high
and low pressure power cables. Laying.
