The wire and cable industry is the second largest industry in China after the automobile industry, and the product variety satisfaction rate and domestic market are both over 90%. Worldwide, the total output value of China's wire and cable has surpassed that of the United States, becoming the...

Coaxial cable can be used for the transmission of analog and digital signals, and is suitable for a variety of applications, important among which are television broadcasting, long-distance telephone transmission, short-distance connections between computer systems, and local area networks. It...

The operation of power cables is one of the important links in our daily life, work and production. The safety of cable line operation is related to the safe production of enterprises and the safety of people's lives and properties. Therefore, cable maintenance is a crucial Work. The...

Single-layer braided shielding consists of one braided layer with a coverage rate of 70% to 95%. Its shielding effect is about -50dB, and the single-layer shielded cable is often used below 1GHz. In RF test and measurement, single shielded coaxial cable is not recommended. Someone once used a...

Many people are curious about the role of stranded and armored cables compared to ordinary cables. Let's take a look. The copper wires of different specifications and different numbers are twisted together in a certain arrangement order and laying pitch to become a conductor with a larger...

Photovoltaic cables are often exposed to sunlight, and solar systems are often used in harsh environmental conditions, such as high temperatures and ultraviolet radiation. In Europe, sunny and favourable terrain will result in on-site temperatures of up to 100°C for solar systems. Now, the...

The shielded cable has the word "shielded". As the name suggests, it is a cable with the ability to resist external electromagnetic interference formed by adding a shielding layer to the transmission cable. The so-called "shielding" on the cable structure is also a measure to...

First, we need to understand what SDI is. The so-called SDI, the English name is SerialDigitalInterface, it is actually an interface type, that is, a digital serial interface. The SDI interface can be roughly divided into three types: SD-SDI (270Mbp, SMPTE259M), HD-SDI (1.485Gbps, SMPTE292M),...

Braided nets are generally woven from tinned round copper wires. Mainly to prevent low-frequency electromagnetic wave interference. Its working principle is the same as that of aluminum foil. The shielded network cable using braided net requires the density of the braided net to be greater than...

The materials of the shielding layer of the shielded network cable are aluminum foil and braided net. What is the difference between the two materials used? Aluminum foil is mainly used to shield high-frequency electromagnetic waves to prevent high-frequency electromagnetic waves from contacting...

Coaxial cable is divided into four layers from the inside to the outside: the central copper wire (single-strand solid wire or stranded wire), plastic insulator, mesh conductive layer and wire sheath. The central copper wire and the mesh-like conductive layer form a current loop. It is named...

The outer layer of the coaxial cable used for cable TV has a shielding network, which can reduce interference at high frequencies, while the twisted pair has no shielding layer; then, the impedance of the coaxial cable is 75 ohms, it It matches the impedance of the input interface (input...

According to the TMR research institute, the cable market of South Africa, one of the BRICS countries, will usher in a substantial growth in the next five years, with an expected compound annual growth rate of 12%, and the market size will increase from 355 million US dollars (about RMB 355...

The production process of wire and cable can be summarized into three steps: conductor drawing, twisting and sheathing. 1. Drawing of copper and aluminum conductors, the conductor raw materials are drawn through the die holes of the wire drawing machine to draw monofilaments of the required...

Coaxial cable consists of four parts: inner conductor, outer conductor, insulating medium and protective sheath. The task of the inner conductor is to transmit high-frequency currents. Due to the skin effect when high-frequency current flows in the conductor, that is, it only flows along the...

3. What is the significance of the CE mark? The meaning of the CE mark is: the CE abbreviation is used as a symbol to indicate that the product affixed with the CE mark meets the essential requirements of the relevant European directives, and is used to confirm that the product has passed the...

1. What is the CE mark? In recent years, the CE mark has been used more and more in the products sold in the European Economic Area (European Union, member states of the European Free Trade Association, except Switzerland). Requirements to be expressed in a series of European directives such as...

"Category six" refers to six types of unshielded twisted pair The parameters of the six types of unshielded twisted pair have been greatly improved, and the bandwidth has been extended to 250MHz or higher. Category 6 Double The twisted pair has a certain difference in appearance and...

Common knowledge when purchasing Category 5 and Category 6 network cables At present, the twisted pairs commonly used in local area networks are generally unshielded Category 5 4 pairs (ie, 8 conductors) cables. The transmission rate of these twisted pairs can reach 100Mbps The outer protective...