Do not ignore the panel for professional cabling (group chart)

Many factors need to be taken into account to plan and design the LAN cabling system, such as the topological structure, building structure, environment, and physical location of various devices; different topologies have different transmission media and different cabling schemes. The structure and environment of the building where the LAN is located also affect the wiring design; the physical locations of various devices connected to the network have a greater impact on the wiring design.

We have designed a network cabling system and purchased the appropriate network cabling materials and tools. We need to go to the site for cabling construction. In principle, the network wiring should strictly control the length of each line segment, and should not break through the design length. Note that it is separated from the power supply, water supply, heating and drainage pipelines to protect the security of the network cable; the laying position should be safe, concealed, and beautiful. It should be easy to use and be repaired in the future. This article is mainly to discuss with you the importance and construction methods of the Information sockets and distribution frame "Panel" of twisted pair wires. During cabling construction, do not ignore the two sides of the Panel.

I. Understanding the wiring panel

1. "wiring panel" of the information outlet"

The Cabling Work zone is the place where the user uses the terminal device, that is, the office location where the client is located, and the information point is the connection point between the client and the network. The work zone subsystem consists of an information outlet and a connection from a terminal device to an information outlet. The module outlet is a standard connector for twisted pair wires, and the module connector is a standard connector for twisted pair wires. The information socket information module and panel mentioned here are one of the components of the "wiring panel. The communication standards followed by the information module determine the applicability of the information outlet. For example, Category 5 modules and Category 6 modules are applicable to Category 5 twisted pair wires and Category 6 twisted pair wires respectively.

As the end of horizontal wiring, the information outlet provides network interfaces for users. Generally, the information point is the information outlet here. As the final Access Point of the enterprise LAN, the "wiring panel" of the information outlet is crucial for users. If the information outlet construction or product quality problems occur, therefore, information is an indispensable factor for a network. It is one of the key components for establishing a LAN, it is an important part of our cabling system project.

The choice of work area panel is a problem that people can easily ignore. We can choose products with fine workmanship and complete functions. The panel of the work area must have the following features:

1) General: high degree of generalization, wide combination range, choose imported PC plastic as panel material, good strength, smooth appearance. The Panel is right-angle) arc angle) and multiple styles are available.

2) Slim: The Panel Thickness generally does not exceed 6mm. The product is light and beautiful.

3) ease: The snap-on connection is easy to install and the installation screws are shielded. The appearance is more concise and bright, and can work closely together even after multiple disassembly and removal.

4) colorful: The Panel can be selected in multiple colors to meet the indoor decoration requirements for various occasions and environments.

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Information panel

Currently, the vast majority of well-known wiring product suppliers can provide imported or domestic National Standard Panels for users to choose from. There are two main types of panel for import: one is the North American style panel, which is represented by the United States. This type of panel usually does not include dust spring covers, but uses a plug-in type dust cover. The advantage is that the RJ45 module can be installed on the panel in any way of 90 ° or 45 °, and has good functions. Another European style is represented by French, German, and English products. These panels are usually equipped with dust-proof spring LVS and replaceable label blocks. Their products are quite elegant and elegant, fully embodies the personality style.

2. Wiring Panel of the Distribution Frame"

Another component of the "wiring panel" is the distribution frame "Panel". The distribution frame is a fixed rack panel with a width of 19 inch. It contains the connected hardware, used for connection between a cable group and a device. Therefore, the distribution frame is used to end twisted pair cables and provide interfaces for connecting twisted pair wires to other devices, such as hubs and switches. This makes the Integrated Wiring System easier to manage, if the twisted pair uses more than 5 categories, the distribution frame must also be more than 5 categories.

The distribution frame port consists of 24/48 ports in two forms. The front panel is used to connect the RJ-45 port of the collection equipment or other distribution frames, and the rear panel is used to connect the twisted pair wires extending from the information outlet or other distribution frames. Based on the location of the distribution frame, the distribution frame is divided into the main distribution frame and the middle distribution frame. The former is used for the wiring of buildings or buildings, and the latter is used for the wiring of floors. One end of the horizontal subsystem is an information outlet, the other end is an intermediate distribution frame, one end of the vertical main subsystem is an intermediate distribution frame, and the other end is the main distribution frame.

Therefore, the distribution frame plays an important intermediate role in the cabling system. It is an indispensable component for intercommunication between network devices and users' computers. Without it, it cannot form a LAN, therefore, the distribution frame operation cannot be ignored during cabling.

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Distribution Frame front

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Opposite side of Distribution Frame

All distribution frames should be backward compatible with distribution frames of different performance types. Backward compatibility means that pairs of different types of plug-in sockets meet the requirements of low-level components, and all components used in structured cabling systems are compatible with system-type components. Five-category distribution frame is used for five-category system installation. to select the best distribution frame for installation, more factors need to be considered. Distribution frames are generally divided into economical, mid-range or high-end distribution frames.

1) economical distribution frame: the economical distribution frame is usually weak in structure and lacks technical support or guarantee for unstable performance. The end-to-end connection of the distribution frame usually consumes a lot of installation costs, without the support of cable management equipment, and the label equipment is also very poor. The economical distribution frame usually has a lower port density per U space.

2) Middle-end distribution frame: the Middle-end distribution frame is made of reasonable quality materials, which can provide better performance than the economical distribution frame. It is often easier to use industry-standard tools for terminal connection, and the labels are also compatible with recognized industry-wide label manufacturers. The middle-end distribution frame has a high-density distribution frame.

3) high-end distribution frame: the high-end distribution frame is generally solid and has reliable performance and an independent test certificate. They are generally equipped with built-in cable management devices to support and protect cables, making it easy to connect. Some distribution frames are also equipped with a complete plug-in cover to prevent dust pollution.

Ii. Construction Method of wiring panel

1. Information outlet "wiring panel" Construction

Generally, the 568a and 568b modules are commonly used for wiring panels. The corresponding jumper is connected to the corresponding modules. There is a socket at the end of the network. You can use a jumper to connect the device to the network. The position, quality, and fixed hardware of sockets are very important in network design. In accordance with the ISO/IEC 11801 and EIA/TIA 569 standards, the convenience of plugging should also be fully considered.

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Line-to-line arrangement

The information sockets of the Integrated Wiring System generally use eight modular general-purpose sockets, which can be divided into multiple types, such as single sockets, dual sockets, and multi-user information sockets. Their installation position should comply with the engineering design requirements, both installed on the wall, also buried on the floor and the Public table socket location, the installation and construction methods should be treated differently.

1) the ground information outlet installed on the ground or on the active floor is composed of two parts: the junction box body and the socket panel. Socket panel has a plane panel and the ground into 45 °, can fall into a plane) and a level of several; cable connection fixed in the junction box body of the device, the junction box is buried under the ground, the lid is flat to the ground and can be turned on. It must have strict waterproof, dustproof, and compressive functions. When not in use, the socket panel is flat with the ground, without affecting people's daily operations.

2) The information outlet installed on the wall should be located about 30cm above the ground. For example, when the room floor is active, the information outlet should be 30 cm from the active floor ground; RJ-45 interface panel and module installed on the wall wiring dark box, the dark box is the end of the network cable, connect the module on the panel and the double line to form the RJ-45 interface on the wall.

3) for the information outlet installed on the "desk", the main reason is that the office is a large place and the desk board is used for operation. Therefore, the information is not on the wall, the information outlet is not provided on the ground, so the information is arranged on the "desk" and the location of the information outlet is considered based on the size and decoration of the desk. It is best to install the socket on a slope, such as 45 degrees with the desktop, which has a good effect on dust. The installation at the bottom of the information outlet must be solid and reliable, so there should be no looseness. The information outlet should have obvious signs, and colors, graphics, and text symbols can be used to indicate the type of the connected terminal device, so as to distinguish between different types during use, so as to avoid confusion.

2. Wiring panel construction of Distribution Frame

The wiring rules of the cabling system can be 568A or 568B. Currently, the most common is 568B. Some distribution racks have two-color codes for the 568A or 568B wiring rules. When the installation requirements of the wiring Panel of the distribution frame adopt the offline cabling mode, the bottom position of the frame should correspond to the cable's online hole. The vertical skew error of each direct column should not exceed 3mm, the base horizontal error per square meter should not exceed 2mm; all kinds of cables and terminals should be complete; the junction box or hidden line box should be located in the wall. The installation rack and wiring equipment shall meet the design requirements and maintain good electrical connection.

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Distribution Frame

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Distribution Frame operation

To facilitate installation, some distribution racks provide a cable management system on the back to support cabling, making installation easy and fast. Some diagonal distribution racks provide distribution rack ports that can be separately detached, it also has a dust cover with spring support; Some include the mounting screws, labels and fixtures of the distribution frame; some V-shaped contacts provided by the distribution frame will be scaled during end connection; some distribution frames enhance the cable fixation capability.

To increase the port density, it is also an effective method to design the distribution frame to have a certain angle (angle. In this way, the depth of the cabinet can be fully utilized, because in the case of fixed length, the horizontal angle of the linear distribution frame) obviously does not have many ports that can be provided by the distribution frame that is "Bent. In addition, the diagonal angle design can achieve the correct jumper bending radius in the rack to minimize horizontal management requirements and provide better space for high-density applications. Therefore, selecting the distribution frame determines how to construct the "wiring panel" of the distribution frame.

Summary:

Wiring construction seems to be physically active, but the technical content in it is still very high. This article focuses on the panel issues of wiring construction, we will introduce other problems in cabling in future articles.

1. Installation and construction of an excellent data center's cabling system
2. Precautions in the design and implementation of Integrated Wiring