The 17th China International Building Intelligence Summit, hosted by Qianjia Zhike, was held on November 18, 2016, at the InterContinental Chengdu Hotel, presenting a spectacular event for the intelligent building industry. At the summit, Liu Lingyun, R&D Director of Tsinghua Tongfang, shared insights on the lifecycle of structured cabling products.
The development model of the intelligent industry is undergoing a major transformation. While emerging technologies such as mobile internet, big data, and cloud computing bring unlimited business opportunities, they are also impacting traditional business models. Against this backdrop, the "17th China International Building Intelligence Summit," hosted by Qianjia Zhike, was grandly held on November 18, 2016, at the InterContinental Chengdu Hotel, presenting a magnificent event for the intelligent industry.
The 17th China International Building Intelligence Summit (Chengdu) was themed "Building Intelligence, Home Intelligence, New Heights of Artificial Intelligence." It attracted experts, system integrators, distributors, manufacturers, and end-users from the intelligent building industry to discuss the development and challenges of business models, technologies, products, and market services in the intelligent building sector under the new economic landscape. Tsinghua Tongfang Co., Ltd., as a diamond sponsor of the summit, was also invited to attend, and Liu Lingyun, R&D Director of Tsinghua Tongfang, shared insights on the lifecycle of structured cabling products.
Liu Lingyun, R&D Director of Tsinghua Tongfang
Pay attention to the product lifecycle and choose products that suit your needs.
Everything has a life cycle, and products are no exception. A product life cycle refers to the market life cycle a product goes through from its entry into the market until its eventual exit from the market. When a product exits the market, it marks the end of its life cycle. What factors determine the product life cycle of structured cabling products?
Liu Lingyun believes that the advancement of the structure, the rationality of material selection, the perfection of the process, and performance are all decisive factors affecting the product life cycle. Performance includes electrical, mechanical, and environmental performance. The quality of a structured cabling system project depends not only on the advancement of the design, the suitability of the products selected, the guarantee of construction quality, and the sophistication of the workmanship, but also, and perhaps more importantly, on the quality of the structured cabling system products themselves. Structured cabling products have a long functional lifespan. Users should not buy the best or most expensive product, nor should they buy the one with the highest cost-performance ratio; rather, they should buy what is suitable. The highest cost-performance ratio means compromising on certain performance aspects. What you should buy is what is suitable for you, for your frequency, for your future applications, and for your environmental conditions.
The impact of changes in cabling standards has placed higher demands on structured cabling.
The development of structured cabling technology is closely related to the development of standards; the evolution of standards reflects technological progress and updates. Liu Lingyun stated that currently, the speed of structured cabling is actually significantly slowing down the development of the entire network. This year, many standards have been implemented, and these performance changes will further raise the requirements for structured cabling.
Regarding the changes in structured cabling standards, Liu Lingyun raised the following points:
1. This year has seen the implementation of numerous standards, including 50G, 100G, and 200G. Copper cabling is being used less in data centers, and 6A cabling is now recommended for commercial applications.
2. IEEE 802.3bz allows the use of Cat5e cabling to transmit 2.5GB Ethernet signals and CAT6 cabling to transmit 5GB Ethernet signals. External crosstalk testing is required to ensure normal operation.
3. IEEE 802.3bt, PoE+, up to 100W, 4 power supply types.
4. New requirements will be added to the standard. TCL's standards have covered this before, but the testing process didn't pay much attention to it. What exactly does this new requirement do? It involves the transition from unbalanced to balanced transmission. This transmission mode works normally for short-distance, low-speed transmission. Without external interference, it interprets noise as data, leading to errors, especially when using shielded cables. When both wires simultaneously raise or lower the battery, the net radiation approaches zero. However, as the speed increases and the distance between the two wires decreases, if there is friction at a certain point, friction noise is generated. Due to the cable imbalance, even if we straighten one wire while the other is wrapped around it (with minimal physical length difference), this noise is forcibly placed into two different signal components when it reaches the other end, resulting in data errors. Therefore, we need to add a new test for twisted-pair cables.
5. Regarding optical cables, OM1, OM2, and OS1 are downgraded and no longer recommended. OM3 and OM4 losses are reduced to 3.0dB/km. RL is used for SM connectors, with a minimum loss of 35dB.
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