Introduction to Structure Patterns in Integrated Cabling System
The integrated wiring system is a work area consisting of terminal equipment and its patch cords connected to the horizontal subsystem information sockets.
Integrated wiring structure mode
1. Work area composition
In integrated wiring, an independent area where terminal equipment needs to be set is called a work area. Workspace Common Terminology
Service area (coverage area) instead, usually the service area is larger than the work area. The integrated wiring work area consists of terminal equipment and its patch cords connected to the horizontal subsystem information sockets. The terminal equipment in the work area can be a telephone, a PC, or a digital network terminal adapter (such as ISDN, DDN), a detection instrument, a measurement sensor, and the like.
The service area of a terminal equipment such as a telephone or a PC can be set according to l0㎡, or according to user requirements or application environment. Simply put, consider the length of the patch cord about 10m. That is to say, the cable length of the integrated wiring work area is usually within 10m.
2. Workspace connection hardware
The easiest way to communicate between the terminal equipment of the application system and the information sockets of the horizontal subsystem is to use patch cords. For example, the telephone can be directly plugged into the information socket with a flexible cord with connecting plugs (RJ-45) at both ends. Some terminal equipment cannot be directly plugged into the information socket due to the mismatch of the plug and socket, or the mismatch of the cable impedance. This requires the selection of appropriate adapters or balanced/unbalanced converters for conversion, so that the terminal equipment of the application system maintains complete electrical compatibility with the wiring level subsystem cables. Regarding the adapter, it is only necessary to configure it according to the interface standard, and it will not be described here.
2.2 Horizontal Subsystem
1. Composition of horizontal dry system
The horizontal subsystem is a part of the integrated wiring structure, which consists of cables from the wiring closet to the information sockets and information sockets used in the work area. A typical horizontal subsystem connection is shown in Figure 2.2. Horizontal subsystem cables are usually routed along the floor or ceiling of the floor.
The horizontal subsystem should use 4 pairs of twisted pair cables. In the case of high-speed applications, the horizontal subsystem can use optical cables and related connection hardware. According to the requirements of the entire integrated wiring, the horizontal subsystem should be connected on the wiring device between the wiring room or the equipment to form and manage the voice, data, image, building monitoring and other systems.
Horizontal subsystem cables should be selected according to the following principles:
① Ordinary cables are suitable for general occasions;
②Filled solid-core cables are suitable for occasions with air pressure;
③The cable length of the horizontal subsystem should be 90m.
The information socket of the integrated wiring is the terminal of the horizontal cable in the work area. The information socket should be selected according to the following standards:
①A 4-pin information socket connected by a single Category 3 cable is used for the basic low-speed information transmission system;
②The 8-pin information socket connected by a single Category 5 cable is used for the basic high-speed information transmission system;
③Two 4-pin information sockets connected by Category 3 wires are used for enhanced low-rate information transmission system;
④The two 8-pin information sockets connected by Category 5 cables are used for the enhanced high-speed information transmission system.
Multimedia information sockets connected by optical cables are used in integrated high-speed information transmission systems. A given cabling design can employ several types of information sockets. The information socket should be internally connected by a fixed wire.
To facilitate link management at cross-connects, different types of signals shall be specified to be carried on the corresponding cable pairs, and
Represented by a uniform color scale. In order to adapt to the development of voice, data multimedia and monitoring equipment, the voice and monitoring part should be selected
Use higher types of cables; data and multimedia parts should use optical cables; the designed horizontal cable direction should be easy to maintain and expand.