Detailed explanation of wiring construction requirements

Wiring construction requirements are the basic capabilities that relevant personnel need to master. Before giving you a detailed introduction to the wiring project, let us first understand the wiring construction requirements, then, we will introduce the cabling construction methods, materials, and installation.

1. Clear requirements and methods

The construction owner and technical personnel should be familiar with the network cabling construction requirements, construction methods, and material usage. In addition, they should often conduct construction instructions on the construction site, check the quality, and solve the problems raised by the on-site construction personnel at any time. The network cabling construction requirements, construction methods, and materials can be explained to the construction personnel.

2. Master environmental information

Master the environmental data of the network construction site as much as possible, and propose Protection Measures to Ensure network reliability according to the environmental data:

In order to prevent accidental damage, outdoor cables should generally be placed in underground pipelines. If an overhead is required, the cables should be mounted at a height of more than 4 meters.) The cables must be fixed on the wall or pole, do not place frames on poles, wires, walls, or even door frames or window frames. Indoor cables should generally be laid in the cable trough at the top of the wall.

Communication Equipment and various cables should be fixed to prevent random movement and affect system reliability.

In order to protect the indoor environment, cable trough should be installed in the room, and cables should be placed in the cable trough. All cables must be drilled into the room and floor, and all cabling must be horizontal and vertical.

3. differentiate different media

Ensure the performance of communication media. According to the characteristics of media materials, different wiring construction requirements are proposed. There are many communication media in the computer network system. Different communication media have different requirements for wiring and construction, as shown below:

Optical Fiber Cable

A. Laying optical fiber cables should not be twisted;
B. The bending radius of the optical fiber cable must be greater than 30;
C. Protection steel pipes should be added to the exposed parts of optical fiber cables, and steel pipes should be firmly fixed on the walls;
D. PVC should be added when the optical fiber is worn in the underground pipeline;
E. Indoor cabling of optical cables should be installed in cable Trough;
F. The optical fiber laying should have a margin for expansion and contraction, and the margin should be appropriate and cannot be pulled too tightly or too loose.

Coaxial coarse Cable

A. Rough cable laying should not be twisted or twisted, and should be laid straight naturally;
B. The bending radius of the rough cable must be greater than 30;
C. The distance between the sites installed on the rough cable should be greater than 25;
D. The installation of the thick cable connector should be reliable and the signal should be prevented from being short-circuited;
E. The crude cable cabling should be in the cable trough to prevent cable damage;
F. When laying a cable with a thick cable, do not use too much force to prevent distortion;
G. The coarse cables of each network segment should be smaller than 500 segments. The coarse cables can be connected using a coarse connector, but the total length cannot be greater than 500 connectors;
H. The generator must be installed on both ends of the crude cable of each network segment, and one of them must be grounded;
I. the coaxial coarse cable can be installed outdoors, but protection measures should be taken to add steel pipes to the underground and the components that walk along the wall to prevent accidental damage.

Coaxial Cable

A. the laying of fine cables should not be twisted;
B. The bending radius of the cable must be greater than 20;
C. The distance between the sites installed on the cable shall be greater than 0.5 meters;
D. The installation of the fine cable connector should be reliable, and the signal short circuit should be prevented;
E. The cable shall be laid in the cable trough to prevent cable damage;
F. When laying the cable, do not pull it hard to prevent pulling;
G. The length of a segment of fine cable shall be less than 183 meters, and the length of the two segments of fine cable within 183 meters can be extended by the "T" header;
H. The Referer must be installed on both ends. At least one Referer in each segment must be grounded;
I. Generally, the coaxial cable cannot be installed outdoors, and the casing should be installed in the outdoor area.

Twisted Pair wires

A. the twisted pair wires should be laid straight in the cable trough in the corridor and indoors;
B. the maximum length of the twisted pair cable from the workstation to the Hub is 100 meters. The connection between the twisted pair wires exceeding 100 meters is extended;
C. The cabling of twisted pair wires in the data room should be bundled into line archives, and there should be certain rules for cabling and should not be put in disorder;
D. numbers must be indicated on both ends of the twisted pair cable to facilitate understanding the relationship between the node and the Hub interface;
E. Twisted Pair wires should be securely inserted into the NIC of the Hub and workstation;
F. When the node is not used, you do not need to unplug the twisted pair cable, which does not affect the work of other nodes;
G. Twisted Pair wires are generally not installed outside the room. When a small part is installed outside the room, casing should be installed in the outdoor part;
H. Select the eight-core twisted pair wires. When you install the connectors on your own, the eight wires should be installed properly. Do not install only four wires or cut off the other four wires.

Iv. Network Device Installation

Hub Installation
A. the Hub should be installed in a dry and clean room;
B. The Hub should be installed on a fixed bracket;
C. The fixed Hub bracket should generally be above 500mm from the ground;
D. The cable to be inserted into the Hub should be fixed on the bracket or wall to prevent accidental disconnection.

Transceiver Installation

A. Select the position where the transceiver is installed on the crude cable. The shortest distance between the two receivers is 25 meters );
B. Use a transceiver to install dedicated tools and drill holes on the crude cable;
C. install the transceiver connector. There is a signal needle in the middle of the three needles on the transceiver connector, and each side of the signal needle has a ground needle). The signal needle must be vertically connected to the hole on the coarse cable, install and fasten the fixed bolts );
D. use A multimeter to measure the electrical resistance between the signal needle and the ground needle. The resistance value is about 25 ohm. If it is infinite, the signal needle is usually not in contact with the core of the coarse cable, or the transceiver is not fixed; or the end is not drilled during drilling. You need to repeat the drilling or try to fix the transceiver.
E. Install the transceiver and fix the screws;
F. The transceiver should be fixed on the wall or bracket and should not be suspended in the air;
G. Install the transceiver cable;
H. The transceiver cable first goes parallel to the crude cable and then turns to ensure reliable connection between the transceiver cable plug and the transceiver.

Nic Installation

A. Do not select the slot on the far side of the computer for Nic installation. The slot on the far side of the computer has a machine frame, which affects network cable plugging and causes inconvenience to debugging;
B. The NIC installation method is the same as that of other computer cards. Because the NIC has external wiring, the NIC must be fixed on the rack of the computer with screws.

5. Device Installation

To ensure the quality of network installation, follow these steps:

First, read the device manual and installation manual. Out-of-the-box equipment should be checked according to the packing list, and the appearance of the equipment should be checked carefully and carefully recorded.

Device in place

The installation should start from the server and connect the cables one by one according to the instructions. Perform power-on each device separately and perform self-check. Devices are connected to servers one by one for online checks. problems should be solved one by one. The faulty device remains in the final solution. Install System Software for joint debugging of the main system. Install the software of each workstation, and the workstation can access the Internet normally. Resolve all issues one by one. You can perform checks on any machine according to the operating procedures, and be familiar with various functions of the network system.

Trial run started.

1. Considerations for choosing the home assembly and cabling Materials
2. Analysis of network cabling problems in practical applications
3. Comprehensive analysis of issues that should be paid attention to during the test of the Integrated Wiring System
4. Analysis of the future development direction of data center Cabling Technology
5. Analysis on how to improve the security of smart Wiring