Question about cat6 cabling

I. Why is the application bandwidth provided by Category 6 products required?

A: The bandwidth is equivalent to that of a highway. You must provide enough bandwidth to increase the data speed. Increasing the bandwidth by twice is equivalent to doubling the public speed, the development of data speed in the past and future demand forecast show that the data speed will double every 18 months. Today, applications running at 1 Gbit/S speed have pushed cat5e cabling to the limit. With the popularization of streaming multimedia applications, the demand for data speed is constantly increasing, in 1990s, category-5 cabling replaces category-3 cabling to meet increasing network speed requirements (such as 100 BASETX) (Note: the bandwidth is defined as the highest frequency when the ACR value is displayed greater than 0 ).

Ii. What are the basic differences between cat5e and cat6 products?

A: The basic difference between cat5e and cat6 is the improvement of Transmission Performance and bandwidth. The bandwidth of cat5e is 100 MHZ, and the transmission performance of NEXT (near-end crosstalk), return loss (echo consumption), and ELFEXT (equivalent remote crosstalk) can be greatly improved, this improves application stability and system transmission speed.

3. What are the advantages of category 6 products over category 5 products that can improve network performance?

Answer: As the transmission speed is improved and the anti-interference performance is exceeded, Category 6 products can effectively reduce the error rate compared with Category 5 products, thus reducing the need for re-transmission due to data packet loss, this greatly improves network stability.

4. Do cat6 cables and connectors need to be matched to form a "harmonious" cabling system?

A: Some wiring manufacturers advocate "harmonious" cabling systems to improve the balance of the system. However, this concept is not yet incorporated into the six standard specifications. Theoretically, the TIA standard only requires each part to pass six categories of standards separately to ensure good link or channel performance.

5. Can I directly use optical fiber cables instead of cat6 cables?

A: Of course you can do this, but the optical fiber system is extremely expensive, and the price is often determined by the customer. The cost of the optical fiber cabling system today is twice that of the six types of wiring. At the same time, it is easier to install copper cables than to install optical cables. In addition, copper products also support IEEE (802.3af) DTE standards being developed.

6. What is electrical balance?

A: The circuit composed of two copper wires is regarded as a complete and balanced transmission line. A complete line has the same electrical performance throughout the transmission channel, the two copper wires in a balanced line share the same electrical characteristics. The electrical equilibrium refers to the physical structure and medium characteristics of a pair of copper cables. If the diameter, concentricity, and length of a pair of copper wires are basically the same, this pair of cables may be considered as an electrical balance relative to the external environment. The degree of electrical balance depends on the cable design and production process, and the six types of cables have high requirements on the precision of the Scale Process. Similarly, the six types of connectors also require a balanced line design, in a balanced transmission, if the equivalent voltage of the opposite electrode is set at both ends of the wire, the magnetic field produced by the current will offset each other and will not interfere outward, the two copper bodies are also subject to little external interference, because an external interference will generate the same voltage as the electrode on each conductor of a pair of copper cores, the voltage difference between the two copper cores is basically 0. The signal interference is due to the difference between two copper cores. Therefore, external interference has a small impact on balanced transmission. The electrical equilibrium degree mainly depends on the voltage difference, and the DB is used as the measurement unit. In the sixth class standard, this number is called LCL.

7. Can the installer create a jumper by himself?

Answer: There are six types of cables and connectors. cat6 Jumpers are high-precision products and must be produced and tested in extremely stable environments to ensure product performance. Therefore, TIA standards, it is recommended that cat6 jumpers be used to control production in a specific environment in the factory, instead of being used for installation on site.

8. Are there major differences between cat5e and cat6 plug-in modules? Why are six categories of modules so expensive?

A: Although there are not many differences between Category 6 and Category 5 modules, Category 6 modules have higher transmission performance. For example, in the range of MHz, the NEXT value of a cat5e module is 43db, while that of the cat6 module is 54db. In other words, a cat5e module generates 12 times the noise compared with the cat5e module, and this performance improvement relies on technological improvement, production program improvement, and material control, greatly increasing costs.

9. Do I need to use the manufacturer's cat6 jumpers to ensure system performance?

A: The TIA standard meets requirements for cat6 jumpers and connectors, as long as the product can pass standard requirements for cat6 components and channels. The entire system should be able to meet the six types of standards, and many manufacturers will specially produce cable connectors and jumpers to prevent matching in order to improve the performance margin of the system, to greatly improve the transmission performance margin of the system.

10. Can I use six types of products from different manufacturers together?

A: If each component in the system meets the requirements of six components and channels, in theory, cabling systems composed of products from different manufacturers should also pass six tests.

11. What are the differences between cat5e cables tested at MHz and cat6 cables tested at MHz?

A: The cat5e Standard regulates the electrical performance of cat5e products under 0 to MHz. Basically, you can test the product performance at a testing frequency (such as 400 MHZ or MHZ) that is supported by the tester, however, all the test results are meaningless relative to the relevant standards, while the six standards regulate the performance characteristics of the relevant channels and permanent links of cables, connectors and jumpers within the 0-250MHZ range, ensures reliable system performance for-MHz applications.

Are there major differences between cat5e and cat6 plug-in modules? Why are six categories of modules so expensive?

A: Although there are not many differences between Category 6 and Category 5 modules, Category 6 modules have higher transmission performance. For example, in the range of MHz, the NEXT value of a cat5e module is 43db, while that of the cat6 module is 54db. In other words, a cat5e module generates 12 times the noise compared with the cat5e module, and this performance improvement relies on technological improvement, production program improvement, and material control, greatly increasing costs.

13. What are the differences between cat5e cables tested at MHz and cat6 cables tested at MHz?

A: The cat5e Standard regulates the electrical performance of cat5e products under 0 to MHz. Basically, you can test the product performance at a testing frequency (such as 400 MHZ or MHZ) that is supported by the tester, however, all the test results are meaningless relative to the relevant standards, while the six standards regulate the performance characteristics of the relevant channels and permanent links of cables, connectors and jumpers within the 0-250MHZ range, ensures reliable system performance for-MHz applications.

14. What is the shortest link allowed by the TIA standard,

A: There is no standard shortest link in the TIA standard. The theoretical TIA standard allows any channel link up to M, ANSI/TIA/EIA-568-B has mentioned that the distance between each point and the communication should be kept above 15 m to reduce the interference caused by the plug-in at the near end, we recommend that you calculate the shortest link distance in the worst case of a 4-connection channel model.

15. Under what circumstances should I consider installing six types of products?

Answer: If you consider the future application requirements of the network, you should theoretically install the most advanced cabling products, because it is often difficult to update and replace the cables after installation. Basically, A cabling system must be used for at least 10 years as the standard to support performance updates for network equipment from 4 to 5 years. If a network device needs better cables in the future, the data speed will be improved. It is inevitable to replace cat5e with cat6 cables, but the re-construction of these cables is very expensive, so even if the price of cat6 products is slightly higher than that of cat5e products, however, in order to reduce the problem of network upgrades in the future, the six types of products are still worth considering.

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