Nowadays, the network cable arowana in the computer market is mixed, with various colors and skins, making people in the industry dumbfounded. Here are some basic knowledge about network cables for your reference: Cables mainly include: twisted pair (also known as network cable), optical fiber and coaxial cable (earlier products, now rarely seen and used). Among the three, coaxial cable is gradually eliminated by the market due to its relatively high price and general performance; optical fiber has very good performance, but the price is too high and installation is more difficult. Generally, it is only used when all indicators require relatively high performance. In high network environments, home networks rarely have this application; twisted-pair cables are widely used in wired networks because of their low price, simple installation method, and good and stable performance. Twisted wire cables are generally divided into 8 categories: Category 1 line is mainly used for voice transmission; Because the transmission frequency of category 2 line is only 1MHZ, it is mainly used in the old token network; Category 3 cables are mainly used for 10BASE-T networks; Category 4 line token network and 10BASE-T/100BASE-T network; Category 5 cable has a transmission rate of 100MHz and is used in 100BASE-T and 10BASE-T networks. It is the most commonly used Ethernet cable; Super Category 5 cable is mainly used for Gigabit Ethernet (1000Mbps); The transmission frequency of Category 6 lines is 1MHz~250MHz, which is suitable for networks with a transmission rate higher than 1Gbps; Category 7 cable is the latest unshielded twisted pair cable with a transmission frequency of at least 500+MHz and a transmission rate of 10+Gbps. In addition, twisted pair cables are divided into two types: shielded and unshielded. Shie

On the one hand, the poor RJ45 connector is not easy to be clamped, on the other hand, the copper sheet is easy to disconnect from the network cable. Identification method: At first glance, look at the color of the RJ45 plug, the color of the high-quality crystal head is clear and clear, no variegated, no stray particles; Secondly, look at the thickness of the crystal head, the high-quality crystal head is thicker and uniform than the inferior crystal head, and the edges and corners are distinct; Three smells, smell the crystal head, high-quality crystal head has no odor, no peculiar smell, no strange smell, no smell; Four pressures, the elasticity of the crystal head is pressed, the high-quality crystal head is flexible, and the inferior crystal head is weak; Five, the sound of the crystal head, the high-quality crystal head sounds crisp, and the catch behind it is even more obvious. In fact, the quality of the network cable and the network head cannot be ignored. When the quality of the network cable is not good, signal interruption is prone to occur.

Low smoke zero halogen, abbreviated as LSZH, LSOH, LSFH and OHLS, refers to the material of the outer skin of the network cable. In the material classification of wire sheath in the wire and cable industry, the low-smoke halogen-free network cable sheath is composed of thermoplastic or thermosetting that emits low smoke when heated and does not contain halogen. Most of the network wire coating is composed of polyethylene, polyvinyl chloride or thermoplastic polyurethane. If it catches fire, chlorinated plastic will release toxic hydrogen chloride, and if it encounters water, it will produce hydrochloric acid. The low-smoke halogen-free materials will not release hydrogen halides or other acids during fire. Low-smoke halogen-free materials can reduce the toxic and corrosive gases produced when they burn. In poorly ventilated environments such as airplanes, train cars, or ships, low-smoke and halogen-free network cables are often used. Low-smoke and halogen-free materials are also commonly used in the railway industry, because there are high-voltage lines under the railway or signal lines that transmit train positions. The use of low-smoke halogen-free materials also reduces the accumulation of toxic gases when the circuit is damaged due to fire or short circuit. Like in the railway industry or the shipbuilding industry, one of the most important requirements is to protect personnel and equipment from toxic and corrosive gases. In these occasions, low-smoke and halogen-free materials are required to be used in the outer layer of the wires and cables. One of the selling points of low-smoke and halogen-free network cables is that few companies have deliberately emphasized low-smoke and halogen-free, unless Party A and the design unit explicitly require it. Mainly because of price factor considerations. Some small local factories do not produce low-smoke halogen-free cables.

The current wire market is flooded with low-quality and low-quality wiring products, which are difficult for ordinary consumers to distinguish. The cost of copper core accounts for between 75% and 85% of the cost of the entire network cable, and the most serious cutting edge is also the copper core. The wire diameter shrinks and the wire length shrinks, using recycled copper, copper clad aluminum, copper clad steel, etc. It plays a decisive role in the quality of the network cable. Once corners are cut, the performance will be greatly reduced. Therefore, no matter how good the performance of switches and routers, and how high the broadband line rate is, once the wiring quality fails, the entire network performance will fall short. In-wall installation, once the quality of the network cable is found to be inadequate, it may even destroy the entire decoration for maintenance. Buy high-quality network cables! Xiao Bian is here, give you a few tips! Four steps to identify the quality of the network cable 1. Wire core First, the transmission quality of the copper core network cable is the best. The quality of the copper core determines the transmission performance of the network cable. The higher the purity and thicker the copper, the higher the conductivity and the smaller the signal transmission attenuation. The copper wire with thick wire diameter, luster, softness and toughness is a good copper wire, and the core of the poor network wire is copper clad steel, copper clad aluminum, etc. Identification method: The most direct method is weighing. Whether it is shrinking wire diameter, shrinking wire length, or cutting corners such as recycling copper, copper-clad aluminum, and copper-clad steel, it will directly lead to a reduction in the number of grams of the network cable. The editor gives a comparison table of the grams of pure copper, copper-clad steel, and copper-clad aluminum cables:

The difference between Category 6 cable and Category 7 cable is mainly reflected in the following points: 1. Broadband and transmission Category 6 network cables support broadband 250Mhz and 1000BAST-TX transmission, while Category 7 network cables can support 600Mhz and 10Gbps transmission. 2. Wire structure Category 6 network cables can use unshielded twisted pair cables or shielded twisted pairs, but Category 7 network cables can only use shielded twisted pairs. One of the seven types of network cables is called a shielding layer. Every two wires form a pair, and then a shielding layer can be constructed. The four shielding layers are combined to form a common large shielding layer. 3. Application areas Category 7 wires are widely used in indoor horizontal wiring, shielded computer rooms and confidential network wiring, and the shielding effect is far better than Category 6 wires. The cabling performance of Category 7 network cable is improved significantly than Category 6 network cable, so its medium transmission capacity and attenuation level are almost equal to optical fiber performance. 4. They also differ greatly in their ability to connect to hardware. Category 7 network cable requires its connector to provide at least 60DB of comprehensive near-end crosstalk when it reaches 600 MHz. Category 6 network cable should not exceed Gigabit speed when it is in use. 5. Conductor size Category 6 wires can be used as 24AWG (7/0.20), 26AWG (7/0.16), 28AWG (7/0.12) conductors, and Category 7 wires are mainly used as 26AWG (7/0.16) and

Outdoor waterproof network cables are the best. Outdoor waterproof network cables are different from indoor cables in two points. Compared with the indoor network cable, the outer skin of the waterproof network cable is thicker and has a PE sheath layer inside. The main function is to be waterproof and sunscreen, tensile and compressive. It is a water-blocking network cable for outdoor wiring. Divided into unshielded network cable and shielded network cable. The indoor network cable has only a single layer of wire skin. In order to adapt to the indoor wiring, the indoor network cable is relatively soft. Indoor network cables are not as thick as outdoor waterproof cables, and there is no double-layer cable skin of outdoor waterproof cables, so they cannot play a good role in waterproof and sunscreen outdoors. If the indoor network cable is to be used outdoors, the risk is relatively high. The outdoor network cable has a thick outer skin, which is not easy to damage the outer skin during the outdoor wiring process. In order to maintain the flexibility of the indoor wiring to a greater extent, the indoor network cable should be protected against the outer skin of the indoor network cable when the wiring is piped. Especially when pulling the cable, do not use too much force to easily damage the core. If it is a better quality network cable, such as all-copper, oxygen-free copper network cable can be used for a long time, but it will inevitably be dropped, and wind, rain, and direct sunlight may cause damage to the network cable sheath. The result of unstable transmission speed. The outdoor wiring environment is often more difficult than indoor wiring. It is generally recommended not to use indoor network cables for outdoor wiring. In addition to being used outdoors, outdoor waterproof network cables can also be used indoors. Outdoor waterproof network cables can be used in places with heavy humidity and dampness

The principle of network twisted pair The network twisted pair is formed by a pair of mutually insulated metal wires twisted, which can not only resist a part of electromagnetic wave interference from the outside, but also reduce the mutual interference between multiple pairs of twisted wires. The two insulated wires are twisted together, and the interference signal acts on the two wires that are twisted together. The common mode signal can be eliminated in the differential circuit of the received signal to extract the useful signal. In a casing, different wire pairs have different twisting lengths. Generally speaking, the twisting length is within 38.1mm~140mm, twisted in a counterclockwise direction, and the twisting length of adjacent wire pairs is within 12.7mm. . The length of a twisting cycle of a twisted pair is called the pitch. The smaller the pitch (the denser the twisted wire), the stronger the anti-interference ability. Network twisted pair is divided into shielded twisted pair and unshielded twisted pair. 1. Unshielded network twisted pair It is a data transmission line consisting of four pairs of transmission lines of different colors, which are widely used in Ethernet circuits and telephone lines. The unshielded network twisted pair has an unshielded jacket, a small diameter, which saves occupied space and low cost; it is light in weight, easy to bend, and easy to install; it has the advantages of independence and flexibility. In the integrated wiring system, unshielded network twisted pair is widely used. 2. Shielded network twisted pair It is a copper twisted pair widely used for data transmission. In terms of physical structure, shielded network twisted pair cables have more full shielding layer and/or pair shielding layer than unshielded network twisted pair cables. Through shielding, attenuation and noise are reduced, thereby providing cleaner electronic signals. And longer cable lengths.

Because Cat6 network cables have their own advantages in many aspects, they will be liked by many users. So does this kind of network cable have certain advantages? The first is that it has a very good transmission speed when in use. For network transmission, first it needs to be able to reach its own transmission speed. When other network cables are transmitting, in many cases, there will often be some speed deficiencies, and this network cable can also reach the corresponding speed. The advantages. Therefore, the Category 6 network cable can adapt to long-distance transmission to a greater extent when in use. Because in the long-distance transmission, it is necessary to make the six types of network cables meet their own corresponding speed requirements, otherwise it will cause a great delay. In addition to the above, the Category 6 network cable can also maximize its loss during the entire use process. The signal will naturally have some weakening during the transmission of the wire, but under different network cables, the weakening will be different, and this weakening is the smallest, so this is the most important point. In addition to what has been mentioned above, there is also a category 6 network cable that can achieve a good lifespan during transmission. When users use this kind of network cable, the service life is also the biggest requirement of the six types of network cables. If the Hongqi is in use due to corrosion and ultraviolet rays, some aspects of its aging, thereby reducing its lifespan, are naturally extremely cost-effective of. The coating material on the surface of the network cable itself has advantages, so it can achieve a good life when used. Compared with other network cables, this product can also make

Now we have entered the information age, network has become indispensable in our life, the Internet as an important carrier of the transmission is also very important, now on the market there are many kinds of cables, such as cat5e, cat6, cat6a, cat7, and so on, a lot of people watching cable is the edition, what is the difference between these cables? Today Kingwire is going to give you a look at cat6 of Internet cables. CAT6 network cable, transmission bandwidth of 1000Mbps, the outer skin label "CAT6" is applied in the gigabit network, the performance is much higher than the above cat5e twisted pair cable.Network cable is good, see four points: core, PVC outer cover, crystal head, frequency transmission speed! Materials: A new performance evaluation index has been determined for cat6 network wires. The single-core bare copper of specification 23AWG is used as conductor, the polymer of polyethylene is used as insulator, and the outer material is flame-retardant polymer with the color of gray. Twisted-pair cable meets the requirement of international standard (ISO/IEC), the electric property more than cat6 for the international standard requirements, cable isolation center cross guarantee NEXT performance and reasonable construction bending radius.LSZH: For "low smoke and no halogen".Low smoke halogen-free materials can meet the requirements of safety and environmental protection. Use of cable: The cross skeleton in the center of the cat6 network cable will rotate with the change of length, and the four pairs of twisted pair will be stuck in the groove of the skeleton to keep the relative position of the four pairs of twisted pair, so as to improve the balance characteristics of the cable and the attenuation of crosswise.In addition, ensure that the cable balance structure is not damaged during the installation process.Six classes of unshielded twisted pair bare copper wire diameter is 0.57mm (wire gauge is 23AWG), insulated wire diamet

Shenzhen Kingwire Electronics Co., Ltd. since its establishment in 2009, has been focusing on one thing, that is to do a good job in every network cable. These cables include cat8 network cable, cat7 network cable, cat6a network cable, cat6 network cable, cat5e network cable, round network cable, flat network cable, shielded Ethernet cable, unshielded Ethernet cable, cross-over network cable, waterproof wires, fire resistant network cable and so on. Because focus, so professional! Let's take a look at how to distinguish CAT5E Ethernet cable and CAT6 Ethernet cable: 1. See the printing words on the cable The printing words on cat5e patch cord cable is "CAT5E UTP PATCH CORD CABLE 24AWG 4PAIRS VERIFIED TO TIA/EIA 568B.2",and also there will be some customer's logo on it.But please note that there will be "CAT5E". The printing words on cat5e patch cord cable is "CAT6 UTP PATCH CORD CABLE 24AWG 4PAIRS VERIFIED TO TIA/EIA 568B.2",and also there will be some customer's logo on it.But please note that there will be "CAT5E". 2. Measure the speed with a network card CAT5E network cable we are often referred to as a hundred Megabyte cable, CAT6 network cable we are often referred to as gigabit cable. Test the speed of the cat5e network cable with the 100 megabytes network card. If it is less than or equal to 100 megabytes, it is cat5e network cable. Use the gigabit card to test the speed of cat6 network cable. If the speed is higher than 100 megabytes and lower than 1000 megabytes, it is cat6 network cable. 3. Look at the internal structure of the wire The biggest difference between the internal structure of the CAT5E network cable and the internal structure of the CAT6 network cable is that there is a cross inside the cat6, but there is no cross inside the cat5e network cable. 4. Look at the RJ45 connector on the cable In general, the crystal head of cat5e cable is a sin

We usually say the network cable, is a roll of a roll of cartons or a axle of a axle cable, this kind of words are suitable for wiring, there are also two ends with RJ45 connectors for cat5e Ethernet cable, widely used in Ethernet, broadband access engineering. Many people do not know the network cable also have so many catagorys?There are a lot of questions, as a professional network cable manufacturer, today allow us to let you to understand what is called cat5e network cable. First of all, CAT5E network cables are composed of multiple pairs of twisted-pair wires and a PVC plastic outer layer. The transmission layer of this network cable is 1000base-T, which has the transmission capacity of gigabit Ethernet and the working bandwidth is 100MHZ. It can undertake different rates of Ethernet transmission media under technologies such as 10base-T, 100base-T and 1000base-T, and the transmission distance of the cat5e network cables is generally within 100 meters. Second, CAT5E network jumper wire is copper cable, wire RJ45 crystal head of two head, RJ45 cable is commonly 4 to 8 core, generally have a TIA/EIA - 568 - a/T568B two sorts, T568A sequence: white, green, green, white, orange, blue, white and blue, orange, white, brown, brown, T568B sequence: white, orange, orange, white, green, blue, white, blue, green, white, brown, brown, in the network construction, generally USES T568B line sequence. Third, CAT5E RJ45 network cable has been widely used in network wiring, Ethernet, router, etc.,

When choosing the industrial network cable, most people will choose to use the shielded network cable, and some people will use the unshielded network cable. Many friends will have a question, is it necessary to use the shielded network cable? Today we are going to learn about this problem together! Let's look at what is shielded cable, shielding cable structure tend to have the aluminum foil, woven mesh, such as shielding layer, not only to resistance to strong interference environment, and can effectively block the external electromagnetic interference, can block the wire itself more electromagnetic leakage, maintain the stability of the transmission network, and can prevent information being tapped. Therefore, in the selection of industrial network cable, in fact, it is necessary to choose the shielded network cable, for the following reasons: 1. Shielded twisted pair with aluminum foil shielding layer and ground wire can effectively resist electromagnetic interference (EMI) and radio frequency interference (RFI) encountered in the application environment.If there is strong interference in the application, aluminum foil plus braided layer double shielding model is optional.Flame retardant series with 24 AWG single strand wire.So the electromagnetic environment is relatively poor working environment requires the use of shielded wire (such as industrial Ethernet, high-density use of strong electrical equipment, frequency conversion motor automation plant, etc.). 2. The shielding wire reduces both external interference and external radiation interference.The former reduces the bit error rate of data transmission and improves the stability of transmission performance.The role of the latter is directly reflected in the reduction o

Monitoring in cable with the ordinary cable, only to pay attention to the use of the environment is different, the cable which you are use in the durability of the good points, there are two kinds of monitoring network cable, one is to go through the network monitoring system, such as network cameras, networking between several systems, or video server, etc., these are all TCP/IP data transmission, so with ordinary cable, connection mode, another one is the network cable used as twisted pair cable, it is the twisted pair video transmission in the process of transmission medium, the cables suggest using outdoor private sidings, a few class line problem is not big,The key is the fastness of the line. Now commonly used is the cat5e network cable and cat6 network cable. Generally we use 100Mhz cat5e network cable, cat6 gigabit Ethernet cables. Network materials: 1, Alloy: in fact, is the iron, the worst quality, the lowest price. 2, high aluminum, previously known as copper clad aluminum, now called high conductivity aluminum, the other is aluminum, why must call this line a call is not strong enough, soon a is oxidation, oxidation resistance with a long time will increase, will appear all sorts of unexpected problems, this also is some beginning there is no problem after wiring, long camera signal instability problems. 3, pure copper: miscellaneous copper, is definitely stronger than the aluminum wire, quality can be better, but the resistance is relatively large, the distance is too far and POE is not recommended. 4, oxygen free copper: also known as red copper, this is the national standard is the best, it is recommended that we do monitoring as far as possible to choose this kind of wire.

Whether it is for daily office work, video entertainment or online education, the Internet has penetrated into every aspect of our lives.As the transmission carrier of network signal, network cable is widely used in home decoration wiring, network center, building wiring and other fields.At the moment, there are round network cable and flat network cable, so what's the difference between flat network cable and the round network cable? 1, structure, Structurally, the inner core of a flat network line is straight and adjacent to each other. A round cable has two pairs of wires, four pairs next to each other.Flat wire is more flexible than round wire. 2. Different appearance and line diameter The circular wire is a traditional wire with a diameter of about 6mm, the flat cable diameter is 1.5*6.0mm for cat6 flat network cable. 3. Transmission effect In the short distance transmission, the flat ordinary network cable and the ordinary round network cable transmission effect is similar, but the cable diameter of the flat network cable is thinner than the round network cable, and the wire to wire winding is relatively thin, the anti-interference ability is poor, the round network cable in the remote signal transmission. 4. wire core The twisted distance of the ordinary round network cable is relatively dense, while the core of the flat network cable is thinner than that of the ordinary cable, and the mutual winding degree between the wire and the wire is relatively loose. 5. Wiring and application The flat wire is thin and soft, which can walk in the corner of the home accurately and easily hide in the narrow space such as carpet/door gap, suitable for the connection between devices. However, the flat network cable on the market only ha

Generally speaking, the screened wire refers to the zhi wire with a shielding layer at the DU part, while the shielded dao layer is generally referred to as zhuan aluminum foil and woven net.The single shu screen wire has only one layer of aluminum-foil. Just in the literal sense, we can know that one of the functions of shielding network cable is shielding. Does shielding network cable have certain shielding effect against the strong interference environment? It can effectively shield the external electromagnetic interference, thus ensuring the stability of network transmission. The shielding structure of the shielded cable has fundamental advantages to reduce the mutual interference between the cables. The shielded cable can not only shield the external electromagnetic signals, but also isolate the electromagnetic leakage of the cable itself, avoiding the mutual influence with other cables and preventing information leakage, etc. There will be a copper wire inside the shielding cable, called the ground wire, which can better shield other signals.The shielded cable needs to be well grounded, and the shielded cable can reduce the mutual interference of the signal.

The difference between CAT6A Ethernet cable and CAT6 Ethernet cables is as follows: 1. Different transmission frequencies The transmission speed of CAT6A network cables exceeds that of CAT6 network cables.The transmission frequency of the CAT6 patch cable is 250MHZ and supports gigabit speed, while the transmission frequency of the CAT6A patch cable has been upgraded to reach 550MHZ and supports 10,000mhz.This is the difference between the two transmission frequencies. 2. Different skin marks The outer covering of the CAT6 cable and the CAT6A Ethernet cable is different. Generally speaking, the outer covering of the cable will have the manufacturer's information, cable logo and scale on it.The identification of the CAT6A cable is cat6, and the identification of the CAT6A Ethernet cable is CAT6A. In addition, CAT6A cables will be thicker because CAT6A has two shielding layers and a thicker core, and CAT6 has a unique cross skeleton structure.The thickness of the wire core is an important index affecting the transmission rate, which is generally proportional. 3. Different core conductors The conductor material of CAT6 of unshielded network wires is 0.545±0.02mm, while that of other types and supersix types is 0.57±0.02mm. This is also the difference between the two, but because this gap is too small, the naked eye is five points to distinguish, so generally do not judge from this aspect. 4. Different prices CAT6A Ethernet cable is more expensive than CAT6 Ethernet CAT6, generally speaking, 100 meters of the CAT6 cable is less than half of the CAT6A cable.

Shenzhen Kingwire Electronics Co., Ltd., since its establishment in 2009, has been focusing on one thing, that is to produce every network cable in a high quality! Because the focus, so we professional! Those network cables include CAT8, CAT7, CAT6A, CAT6, CAT5E, round Ethernet cable, flat Ethernet cable, shielded Ethernet cable, unshielded Ethernet cable, cross-over Ethernet cable, waterproof Ethernet cable, fireproof Ethernet cable, lan cables. In our workshop, you can see only the Network cables, because we are the manufacturer which specilize in Ethernet cables in Shenzhen. Although single products, our quality is very good! We not only have our own cable Extrusion Line workshop, but also have our own assembly department. We also adopt the advanced U-shaped production mode, which the finished products will be produced within three minutes after starting producing, and we will test every cable to make all cables are the good ones. One hundred percent to prevent defective products from reaching customers. If you need network cable, we will be your best choice, no matter the price delivery time or the quality, you will have no worries. If you want to know more, please contact us.

CAT7 is designed for the application and development of gigabit Ethernet technology. However, it is no longer an unshielded twisted pair, is a shielded twisted pair, so it can provide a comprehensive attenuation of at least 500MHZ to crosspoking ratio and an overall bandwidth of 600MHZ, more than twice that of CAT6 Ethernet cable, with a transmission rate of up to 10Gbps.In the CAT7 of cables, each pair has a shield layer, and four pairs of wires together have a common shield layer. In terms of physical structure, the additional shielding layer makes the CAT7 Network cables have a larger diameter.Another important difference is its ability to connect hardware. The parameters of the CAT7 of systems require that all pairs of wires provide at least 60DB of integrated proximal winding at 600MHZ.The super-five systems only require 43DB at 100MHZ and 46DB at 250MHZ for the CAT6. The CAT7 Ethernet cable are proposed for the following reasons: 1. Compared with fiber-optic LAN, the CAT7 system solution provides the desired performance and bandwidth, but the overall cost is only a fraction of that of fiber-optic LAN. 2. Fiber optic system can bring people enough bandwidth, and the price of fiber optic cable is close to that of CAT7 kinds of cable.However, the price advantage of optical fiber is quickly lost when the cost of optical router, optical switch and optical network card is taken into account.

The CAT8 Ethernet cables cables are the latest generation of network cables. The structure of CAT8 is same as CAT7 Ethernet cables. The cable are with double-layer shield (SFTP). It has two wire pairs,Cat8 Ethernet Cable Offers Faster Speeds and Better Performance, a 2000MHz channle bandwith and a transmission rate as high as 40Gb/s, but its maximum transmission distance is only 20m for CAT8 round Ethernet cable and 15m for CAT8 flat Ethernet cable. The Cat8 Ethernet cables are backward compatible with RJ45 connector interfaces of Cat5e, Cat6 and Cat6a and CAT7. Cat8 Ethernet cable is ideal for switch to switch communications in data centers and server rooms, where 25GBase?T and 40GBase?T networks are common. Its RJ45 ends will connect standard network equipment like switches and routers, allowing for 25G or 40G network upgrades that do not require a complete equipment overhaul.