Detailed description of Structured Cabling System

Structured cabling systems are worth learning. Here we mainly introduce the preparation of structured cabling systems, the selection of structured cabling systems, and the importance of cabling systems, this gives you a better understanding of structured cabling systems.

With the rapid development of communication technology and the information industry, Intelligent Building IB and Intelligent Building are increasingly relying on computers, control devices, and communication devices, intelligent Management and control of all equipment, voice exchange, data terminals, network equipment, video equipment, HVAC, fire fighting systems, security monitoring, power systems and thermal systems of buildings, achieve interconnection information and resource sharing. The information types and information distribution of such systems and devices are complex and changeable. Therefore, an effective structured cabling system must be established, connect different control devices, exchange devices, network devices, and computer devices.

A network is a connection system that connects independent devices and enables them to share information and resources. Correct design and implementation of a network system can improve the speed and reliability of communication, so that a system can work more efficiently. Network Construction should meet the requirements of published national and international standards, and should be able to continuously evolve and upgrade according to changes in business requirements.

With the extensive use of computers, people are paying more and more attention to the topics of network and structured cabling systems. In the past, desktop computers used to work independently. Now this situation has changed. At present, more than 50% of commercial computers are connected to Lan, which can greatly improve work efficiency. A lan can connect computers with servers and peripherals, or provide signal channels for sensors, cameras, monitors, and other electronic devices. If these links are on a temporary basis, the work zone will soon be filled with various unidentifiable cables, making troubleshooting and maintenance impossible.

Structured Cabling System Preparation

Everything must be fully prepared before implementation. The preparation of structured cabling systems involves factors such as load evaluation and planning, target lifecycles, and technical indicators.

1. Load Evaluation and Planning

The selection of network and cable types is mainly determined by the device types to be connected, their locations, and their usage methods. Before planning, it is necessary to give a description of the potential network load. When a network needs to serve multiple systems, the peak traffic of their hybrid data should be carefully considered.

2. Target Lifecycle

The average target life cycle of the structured cabling system is 15 years, which is consistent with the renovation cycle of the main building. During this period, the computer hardware, software, and usage of the system will change significantly. The throughput, reliability, and security requirements of the network must be increased.

3. Formulation of technical indicators

Usage; Number of users and possible growth; user location and the longest distance between them; Possibility of user location change; connection with current and future computers and software; available space for cable cabling; total investment of the network owner;
Regulations and security requirements; the importance of preventing service loss and Data leaks.

Structured Cabling System Selection

1. Importance of structured cabling systems

Structured cabling systems are one of the key components of any network system. Therefore, decision makers must prepare to apply 10% of the total network investment to this field. Investment in high-quality structured cabling systems and network design is definitely worth the money.

2. cable selection

The device type connected to the network and the communication load carried by the cable are the key factors for cable selection. In a structured cabling system, you should first determine whether to use shielded, unshielded, or optical cables together.

Cables usually use wires with insulation and use one or more layers of plastic skin. A cable usually consists of 2 to 1800 cable pairs. Large logarithm cables are usually used in trunk structured cabling systems, which are especially suitable for voice and low-speed data applications.

3. length limit

The maximum length of these cables in trunk and horizontal hub-to-desktop) Structured Cabling System applications is described in detail in the International Standard IS0/iecis11801.

4. Size Limit

Before determining the cable type, it is also important to check the available space for cabling. Factors such as size, weight, and shielding flexibility mainly depend on whether the cable is made of metal foil or a protective layer, and how many wires are used in the cable.

5. UTP cable

Unshielded twisted pair wires (UTP) can transmit data at a transmission rate of 622Mbps or higher. In this way, people can use this lower-price and smaller cable in applications that originally only use shielded cables. UTP cables reduce EMI interference by tightly matching cables. This cable is called a balanced circuit.

6. Circuit balancing

In an ideal balanced circuit, the sum of the noise voltage introduced in the conductor is zero, so that the signal transmission between the line pairs will not interfere. However, this ideal situation cannot be fully realized. The signal-to-noise ratio (SNR) of the cable is used to measure the signal quality in the case of noise signals in the cable.

Due to the shielding in the shielded cable, the balance is poor. Therefore, good shielding integrity and good grounding are very important for the shielded cable. High-quality UTP cables can achieve good balanced Circuit Characteristics Without grounding or shielding the entire circuit. Because the optical fiber transmits signals through light waves, it is not affected by any form of electromagnetic shielding.

7. optical cable selection

Fiber optic is usually the best choice for applications with a transmission rate higher than 155Mbps and a longer transmission distance. Optical fiber has the advantages of small size and durability, but its cost is higher than that of other types of cables. In most networks, optical cables are generally used as trunk lines, while UTP cables are used as horizontal cables. Wireless LAN can be used as an alternative for systems that are difficult to install cables due to installation time, space, or other restrictions.

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