rfm cable

The installation of the LAN starts from the cable, which is the most basic part of the network. According to statistics, about 50% of the network failure and cable-related. It can be seen that the quality of cable itself and the quality of cable installation directly affect the healthy operation of the network. In addi

1, test the speed of network cable The transmission speed of the network cable is the most effective way to discriminate the quality of the network cable. In order to be closer to the actual use of the environment, while reducing the external interference link, the author recommends the use of two-machine direct-linked way. At the same time in order to ensure th

Notice on wiring: Features of leather Cable Leather cable is commonly known as Indoor Hanging optical cable, leather cable learning name: Access Network with butterfly introduced optical cable; because of its shape is Butterfly Shape; so some people are called butterfly-sha

Standard Organizations and manufacturers in North America and Europe have long been arguing over the selection and standards of the outer skin of Integrated cabling network data cables, just as they are still using FTP shielding products for UTP. Currently, North America, South America, Asia Pacific, and China all adopt the North America-based cable fire prevention standard UL and NEC (National Electrical Code ), in some parts of Europe, low halogen o

Maybe many people do not have a special understanding of the man optical cable line. Next we will introduce in detail the overall design and technical application of the man optical cable line. How to build a Metro optical fiber network? First, it should be based on the network structure of the man. Second, according to the construction idea of the man, the topology of the network should be flexible and cap

The energy-saving effect of the frequency conversion device is very obvious. The variable-frequency speed control motor is used in the high-power motor, and the entire generator set can save energy by 30%. After variable-frequency speed control is used, the soft start of the motor is realized to ensure smooth operation of the motor, reduce the wear and tear of the motor bearing, and prolong the service life and maintenance cycle of the motor. Therefore, variable frequency speed control technolog

Detailed explanation of cable connector A lan is to connect individual computers or terminals using networks to exchange information and share resources according to certain protocols. Commonly used network cables include twisted pair wires, coaxial cables, and optical fiber cables. Twisted Pair wires can be divided into shielded twisted pair wires (STP) and unshielded twisted pair wires (UTP) based on whether they are added with the screen layer of a

The access network system is widely used and has been well developed in various fields. It also plays an important role in cable TV return. After more than 20 years of development, China's cable TV network line is now more than 3 million kilometers in length, the optical fiber trunk line reaches 0.26 million kilometers, and nearly 2000 counties have opened cable

1. Overview With the development of information society, network technology has become more and more complex, and as the cornerstone of the network, keel-network cable appears more important. In the current network, there are three kinds of cable media: Optical cable, coaxial cable and digital twisted

RJ45-type network cable plug, also known as Crystal Head, is widely used in LAN and ADSL broadband Internet users of network equipment between networks (called five-type line or twisted pair) connection. In specific applications, RJ45 plugs and network cables have two connection methods (line order), respectively called T568A Line sequence (Fig 1) and t568b line sequence (Figure 2). RJ45 type wire plug PIN number Identification method is: Hand to get

The local area network is the individual computer or the terminal, uses the communication line to connect each other, follows certain agreement, carries on the information exchange, realizes the resource sharing. Among them, communication lines, that is, transmission medium commonly used: twisted-pair, coaxial cable, optical fiber and so on. From the cost-performance and maintainability, most LANs use unshielded twisted pair (utp-unshielded Twisted Pa

CATV Broadband Integrated Information network based on 3COM company CATV Access Network platform is a successful implementation of cable TV, data communication and network telephone "three nets in one" on the 750MHz bandwidth fiber-optic coaxial hybrid network (HFC). The open television, telephone, computer line of the public Information network, the main technical indicators to reach the world's advanced level. Now, there are 35 sets of TV programs d

Cutting-edge Cable TechnologyAdd the colored optical fiber and oil paste to the rubber sleeve tube made of high modulus plastic at the same time, the optical fiber can be moved in the casing. The cable core is made by adding a strong core along the center of different cable casings. The cable core and protective materi

With the development of the network, as a kind of medium for transmitting data in the integrated wiring system, optical fiber is more and more used by people because it has the advantages of high transmission rate and far distance. As we all know, optical fibers are non-conductive, can be free of shock current, optical fiber cable also has good protection performance, the metal components in the cable to th

With the extensive laying and use of optical fiber lines, the reliability and security of optical fiber communication systems have attracted more and more attention. Due to the vast territory of China, the terrain and landform are quite different, which may cause many dangerous factors to optical cable lines, including various natural factors and man-made damage to optical cable lines. From the past Analysi

Overview Advanced Multimode Optical Fiber Verification One-step automated testing allows you to test and verify bidirectional dual-wavelength multimode optical fibers at the same time 75% less time than manual power meter tests Use LinkWare cable management software management and documentation to record test results for copper and Optical Cables FeaturesAdvanced verification of multimode optical fiber networks. you can use CertiFiber to test mo

Currently, the access network technology is widely used, and the access network technology is also very commonly used. So I have studied the problems related to the access network technology construction planning and practical application. I will share with you here, I hope it will be useful to you. With the rapid development of broadband multimedia services and optical fiber communication technology, optical fiber communication technology has been more and more widely used in access network tec

Network cable classification and purchasing A network cable in the broad sense includes coaxial cables, telephone lines, optical fiber cables, and twisted pair wires. According to the Ethernet standard set by IEEE, twisted pair wires are most suitable for common LAN with a star topology. The twisted pair uses rubber as the Housing material, and contains 4-to-8 copper core plastic wires of different colors

Introduction to computer network structured Integrated Wiring System StructuredCablingSystem (SCS) is a module system based on star topology developed by Bell laboratory experts for many years. It is also the preferred system for LAN construction. The system has the advantages of practicality, flexibility, economy, modularization and scalability. It can connect data communication equipment with other information management systems and connect these devices to external communication networks. SCS

background : Some days ago the team in the terminal equipment and server long connection business testing, found that a situation: after unplugging the device side of the network cable, and then plug in the network cable, and sometimes can continue to normal long-run requests, and the use or unplug the cable before the long connection. However, sometimes it is no