What does Category 6 network cable mean, and how to distinguish between Category 6 network cable and

Category 6 network cable refers to Category 6 cable, that is, cable that meets the Cat-6 standard.

The transmission frequency of the Category 6 line is 1MHz 250MHz, and the Category 6 cabling system should have a large margin of comprehensive attenuation crosstalk ratio (PS-ACR) at 200MHz, which provides 2 times the bandwidth of the Category 5, which is 100m for the Category 5 line, 155M for the Category 5 line, and 200M for the Category 6 cabling system.

In short-distance transmission, Category 5, Category 5, and Category 6 can all reach 1Gbps, and the transmission performance of Category 6 cabling is higher than that of Category 5 and Category 5 standards, and it is most suitable for applications with transmission rates higher than 1Gbps.

Category 5 wire abbreviation, is a kind of computer network used in twisted pair cable, but also data, voice and other information and communication services used in the multi-first wire, is widely used in Ethernet, broadband access engineering, its quality, directly related to the transmission quality of information communication. Due to the development of optical fiber and communication technology, the impact of twisted pair on communication quality is gradually decreasing.

As an 8-core copper cable with good performance, Category 5 cable can naturally play a role in signal transmission other than Ethernet, such as carrying voice and **. In some cases, Category 5 wires are capable of carrying multiple traditional ** wires in a single cable. There are a variety of options for transmitting analog or digital** over cables.

HDBaset (GB S) is one such solution.

The difference between the two. The identification of the Category 5 line is "cat5", with a bandwidth of 100m, which is suitable for networks below 100 megabits; The logo of the Category 5e line is "cat5e", with a bandwidth of 155m, which is a mainstream product; The identification of the Category 6 line is "cat6", with a bandwidth of 250m, which is used to set up a gigabit network, which is the trend of future development.

Twisted pair according to the electrical performance of the division, usually divided into: class three, class four, class five, super five, class six, class seven twisted pair and other types, in principle, the larger the number, the newer the version, the more advanced the technology, the wider the bandwidth, of course, the more expensive. When we buy cables for LANs, we generally choose Category 5 or Category 5e network cables, because.

Class 3 and 4 twisted pair is generally used in 10M bps Ethernet, and Class 5 twisted pair can meet the increasingly popular 100m bps Ethernet, super Class 5 twisted pair is mainly used in the future Gigabit network, but now it is also commonly used in the LAN, because the first aspect is not much more expensive than the five types of wire, and now there are six types of wires, generally used in ATM networks, and the company's LAN is not recommended for the time being. At present, the three and four types of lines are almost no longer in the market, and if there is, they are not in the third or fourth class, but in the fifth category, or even the super five types of lines, which is currently the most false five types of lines. At present, it is common in the general LAN to be Category 5, Category 5 or Category 6 unshielded twisted pair, especially the current Category 5 and Category 6 unshielded twisted pair cables can easily provide 155Mbps communication bandwidth, and have the potential to upgrade to gigabit bandwidth, so it has become the preferred cable for horizontal cabling today.

The twisted pair can be divided into: shielded twisted pair and unshielded twisted pair, most LAN uses unshielded twisted pair (UTP—unshielded twisted pair) as the transmission medium of wiring to network, and the network cable is composed of a certain distance long twisted pair and RJ45 head.

Category 5e twisted pair.

The shielded five types of twisted pair are covered with a layer of shielding metal film, which has better anti-interference performance. Some readers may ask, so why not use shielded Category 5 twisted pairs? This is because shielded twisted pair requires the entire system to be shielded, including cables, sockets, crystal heads, and patch panels, and the building needs to have a good ground system.

However, in actual construction, it is difficult to ground everything perfectly, making the shield itself the biggest source of interference, resulting in performance that is even far inferior to unshielded twisted pair UTP. Therefore, unless there is a special need, only unshielded twisted pair cables are usually used in the cabling system.

1) A class of cables: mainly used for voice transmission (a class of standards are mainly used for ** cables before the early eighties), different from data transmission.

2) Category 2 line: the transmission frequency is 1MHz, which is used for voice transmission and data transmission with a maximum transmission rate of 4Mbps, which is commonly found in the old token network that uses the 4Mbps specification token passing protocol.

3) Category III cable: refers to the cable currently specified in the ANSI and EIA TIA568 standards, the transmission frequency of the cable is 16MHz, which is used for voice transmission and data transmission with a maximum transmission rate of 10Mbps, mainly used for 10Base-T.

4) Category IV wire: The transmission frequency of this type of cable is 20MHz, which is used for voice transmission and data transmission with a maximum transmission rate of 16Mbps, which is mainly used for token-based LAN and 10BASE-T 100BASE-T.

5) Category 5 wire: This type of cable increases the winding density, and is coated with a high-quality insulating material, with a transmission rate of 100mhz, which is used for voice transmission and data transmission with a maximum transmission rate of 1000mbps, mainly used for 100base-t and 10base-t networks. This is the most commonly used Ethernet cable.

6) Category 5 line: Category 5 has reduced attenuation, less crosstalk, and has a higher attenuation-to-crosstalk ratio (ACR) and signal-to-noise ratio (structural return loss), smaller time delay difference, and the performance has been greatly improved. Category 5 cables are mainly used for Gigabit Ethernet (1000Mbps).

7) Category 6 cable: The transmission frequency of this type of cable is 1MHz 250MHz, and the comprehensive attenuation crosstalk ratio (PS-ACR) of the Category 6 cabling system should have a large margin at 200MHz, which provides 2 times the bandwidth of Category 5. The transmission performance of Category 6 cabling is much higher than that of Category 5e standards, and it is most suitable for applications with transmission rates higher than 1Gbps.

An important difference between Category 6 and Category 5e is the improved performance in terms of crosstalk and return loss, which is extremely important for the next generation of full-duplex high-speed network applications. The basic link model is eliminated in the six types of standards, and the cabling standard adopts a star-shaped topology, and the required wiring distance is:

The length of a permanent link cannot exceed 90 m, and the length of a channel cannot exceed 100 m.

Now it is generally used in the super five types of network cables, there is nothing ordinary or ordinary, just the transmission distance and speed problems

1. The display of the line mark of the super five network cable and the super six network cable:

2. Category 6 network cable is an upgraded version of Category 5 network cable.

3. Bandwidth limitations of Category 5 network cable and Category 6: The bandwidth supported by Category 5e network cable is 100m, and the bandwidth supported by Category 6 network cable is 500M.

4. The difference between the structure of the super five network cable and the super six network cable: in addition to the characteristics of high-quality oxygen-free copper material, low smoke and halogen-free external call sleeve, the super six network cable has increased the design of the cross skeleton compared with the super five network cable, and the isolation effect is better.

5. The color selection of the super five network cable and the super six network cable: the super five network cable has the choice of green and blue environmental protection color, and the super six network cable has purple, gray and custom color options in addition to the blue choice.

6. There are shielded network cables and unshielded network cables, and in addition to the above two types of network cables, there are also double-screen network cables.

7. Category 5e network cable and Category 6 network cable: The ** of Category 6 network cable is higher than that of Category 5 network cable.

To put it simply, the Category 6 cable is an upgraded version of the Category 5 cable. In terms of performance, the transmission rate is improved, and the stability of the transmitted data is improved.

At home is China Telecom 300M broadband, which type of network cable should I choose?

To be precise, the six-type network cable is a network cable with a bandwidth of 25MHz, which is commonly known as a gigabit network cable, which is commonly used for Internet access and monitoring

Category 6 unshielded network cables.

The six types of network cables are said to be professional, and the six types of network cable conductors are the national standards, and there are also the most lower limits.

CAT6e network cable.

There are mainly the following differences with the six types of network cables.

1. The difference between the logos: the logo on the wire skin of the six types of network cables is cat6,The CAT6A cable is marked as CAT6A, note that it is not CAT6E, Cat6e (Cat6e) belongs to CAT6 (Cat6) Improved, but not Cat6A (Cat6A).

2 Differences in materials: six types of unshielded network cables.

The conductor material is, and other models and super six conductor materials are.

3 Difference in transmission rate: The transmission frequency of the Category 6e network cable has also been extended to 500MHz, supporting 10 Gigabit network speed.

The transmission frequency of Category 6 network cable is 250MHz, and it supports gigabit network speed. Category 6 cables are mainly used for 1Gbps network connections, while Category 6A cables are used for 10Gbps network connections. Regarding the transmission rate, this needs to be checked by a professional network cable tester.

Note: The picture is from the Internet.

Category 6 cables generally refer to Category 6 unshielded twisted pair cables.

CAT6e network cable.

It is better than the six categories in terms of performance.

The network cable of the previous level.

Both the Category 6 and the Category 6 cable have added an insulated cross skeleton in the structure, and the four pairs of twisted pair cables are placed in the four grooves of the cross skeleton.

So what's the difference between them?

From the appearance: 1The logo on the wire skin of the Category 6 network cable is cat6, and the label on the wire skin of the super 6 network cable is cat6e

2.The core of the Category 6e network cable is denser, and the conductor is thicker.

3.The cross skeleton of the Super Six is in the shape of a gear-like wired groove.

In terms of performance, all parameters of Category 6 unshielded twisted pair cables have been greatly improved, and the transmission frequency has also been extended to 250MHz or higher.

The super six network cables are also called 6A, which can support 10 Gigabit Internet access, and the current maximum can reach 500MHz, which is twice that of the six types of network cables.

Attached: The purpose of adding a cross skeleton to a Category 6 network cable and a Category 6 network cable is to solve the common 'crosstalk' problem in Category 6 transmission.

6a: The shape of the gear-shaped wire groove can effectively change the enhanced signal and prevent the signal attenuation from being minimized.

However, the cross skeleton is not the only standard for the six types of network cables, some of the six types of network cables are isolated by one word, and some even do not, as long as they can meet the standards and pass the test.

But most manufacturers can't produce the six categories that meet the standards without ten frames.

568A standard: green-white, green, orange-white, blue, blue-white, orange, brown-white, brown-white;

568b standard: orange white, orange, green white, blue, blue white, green, brown white, brown.

The network cable connector is connected in accordance with the international wiring standard, the standard wire sequence TIA EIA568B and TIA EIA568A. In order to keep the transmission signal normal, it must be connected according to the line sequence of 568b and 568a, if it is not in accordance with the correct sequence of network cables, then the network signal can not be transmitted normally when it is transmitted to about 20-30 meters.

The internal structure of the crystal head.

The size of the crystal head of the network cable is the same, that is, the RJ45 interface. Different internal structures are different, the five types of crystal heads are vertically arranged, and the six types of crystal heads are staggered up and down, and there are also two-piece sets and three-piece sets. The standard aperture of Category 5 is yes, and Category 6 is, and there is still a certain difference.

The key to the use of the network cable is in the crystal header. If the six-type network cable uses the five-type crystal head, if the crystal head is pressed tightly, it is good not to crack, if there is cracking, the head is not usable, and the morning network is intermittent, or even directly blocked.

There is no difference between the five types of crystal heads and the six types of crystal heads in the connection, mainly because of the difference in transmission rate, so in order to give full play to the best performance of the network cable, the most liquid and good six types of network cables use six types of crystal heads.