Generic cabling is the abbreviation of generic cabling system for buildings and buildings. It is a modular, highly flexible building or information transmission system within the building group. It is the "information superhighway" in the building". With the maturity and large-scale application of network technology, as the bottom equipment of network services, integrated wiring plays an increasingly important role.
However, all things have useful life, generic wiring products are no exception. In the 2016th China seventeen international building intelligent summit Guangzhou field, Tsinghua Tongfang network product division director of research and development Liu Lingyun believes that many factors determine the product life cycle of integrated wiring, but many factors are around the "performance" to design. The end of the life cycle is nothing more than a performance that fails to meet the requirements. Therefore, the design of product life cycle should be designed according to the user's performance requirements. The advanced nature of product structure, the rationality of material selection and the perfection of process are the three elements of product life cycle design. In addition, the key factor is cost effectiveness, the most relevant to the cost effectiveness is the standard, landing standards today put forward higher requirements for wiring.
Liu Lingyun, research & Development Director of Tsinghua Tongfang network product division
Factors affecting product life cycle
Product life cycle refers to the market life cycle process that product enters from the beginning of the market until the final exit from the market. For generic cabling, a long life cycle can not only help managers accurately make decisions according to different stages, save costs, but also be an effective indicator of product value and pricing. Liu director believes that there are many factors affecting the product life cycle, in detail, mainly divided into the following aspects.
There is a saying in the system theory: "structure determines function". That is, the specific structure of a system, A, must correspond to a specific set of functions, B. That is to say, the function of any thing is decided by the structure, if the structure changes, the function will certainly change. Director Liu said at the summit site, the advanced nature of the structure affects the performance of integrated wiring, but also become a measure of the product life cycle can not be ignored factors. At present, everyone is discussing the relative high-end cabling issues such as data center, OM5 and so on. However, no matter how to upgrade, transform, the life cycle is the fundamental. Director Liu pointed out that the life cycle is not measured by the warranty period of a single product, but should fully consider its performance under different demands, and it is inseparable from the above mentioned "structural advanced nature".
In addition, the rationality of the material selection and the perfection of the process will also affect the product life cycle. For the material selection, according to the different needs of the environment to consider a lot of technical details, such as flame retardant or anti ultraviolet? Generally speaking, the outer skin of PVC can not be exposed outside for a long time. And the molecular structure determines the gap is large, not waterproof...... These areas should be taken into consideration before construction.
Standard changes bring higher challenges to generic cabling
Generic cabling standards have been around for a long time. With the rapid development of telecommunication and computer network technology, many new cabling systems and solutions have been developed. Accordingly, more updated standards have been introduced to meet the needs of technology and market. Director Liu said that this year there are a lot of standard landing, these changes will make the requirements of integrated wiring further improved.
In May this year, IEEE members approved the creation of several standard programs related to 25G Ethernet, 50G Ethernet and 200G Ethernet, and new standards will also benefit 100G Ethernet applications. The application of copper in the data center more and less, now recommend the use of 6A commercial cable wiring. It should be noted that the 4 channel of 200G is not a new technology, which has been used in the transmission of Gigabit transmission over the five class twisted pair, that is to say, the 4 lines should be sent and received simultaneously.
Secondly, the global group Ethernet Alliance revised standard IEEE 802.3bz has been officially approved, the rate increased to 2.5Gbps, the maximum 5Gbps. Director Liu said that the new standard IEEE 802.3bz is still based on copper wire, compatible with Cat5e and Cat6 network cable, the user does not need to replace the cable network can enjoy.
New requirements for standards will also increase. The TCL is the differential voltage ratio measured by the unbalanced voltage and the transmitter, which has long been involved in previous standards, but only when the test is not paid much attention. Due to the increase of the speed, unbalanced cable data destruction is more and more obvious, TCL test is necessary to join the twisted pair test.
The balance of transmission in short distance and low transmission work.
The twisted pair is unbalanced, high-speed transmission of common mode signal (noise) will affect the differential mode signal and error signal.
In addition, the performance of optical fiber in TIA 568.3-D also has some changes, OM1, OM2 and OS1 degradation is no longer recommended; OM3 and OM4 loss from 3.5dB/km to 3.0dB/km; RL used in SM connector, connector from 26dB to the minimum 35dB.
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