SYV-50-15 solid polyethylene insulated video cable

 Tianrun a boat Cable Group Co., Ltd. Contact: Li Tingting Tel: 13718598704 QQ2049325913 Tianrun Zhou (Beijing) Group is a production of wire and cable, fiber optic cable company, the country has eight plants currently import. The company was founded in 2006, has now been nine years old, Tianrun company marketing a variety of wire and cable, cabling, video cable, telephone cable, coaxial cable; fiber optic cable, indoor and outdoor fiber optic cable, ADSS cable, OPGW composite overhead ground wire. Company plant located in the industrial park along really Changping District of Beijing, the company is expanding the scale of production, low prices, product quality assurance testing by, along with a variety of product certification and test reports. It is to build our own brand of wire and cable, optical fiber cable manufacturers town, welcomed the new and old customers to visit my company guidance. Coaxial cable refers to two or more concentric conductor and shield conductors share the same axis of the cable. The most common coaxial cable made of copper conductor and insulation and shielding composition in a layer of insulating material in the outer part of the ring conductor and another insulator, then the whole cable from PVC jacket material wrap. Coax use can be divided into basic coaxial cable and broadband coaxial cable (that is, coaxial cable and video coaxial cable network) is divided into 50-ohm coaxial cable substantially coaxial cable and broadband coaxial 75 ohm cable. Coaxial cable is divided into thin cable: RG-58 and RG 11-two kinds of thick cable. And the use of minimal semi-rigid coaxial cable and feed tube. Thin cable has a diameter of 0.26 cm, the maximum transmission distance of 185 meters, when used with a 50Ω termination resistors, T-connector, BNC connector connects to the card, wire rod prices and connector costs are relatively inexpensive and does not require the purchase of equipment such as hubs, Erection of the terminal device is suitable for small-scale Ethernet is more concentrated. Cable total length not more than 185 meters, otherwise the signal will be seriously degraded. Thin cable impedance is 50Ω. Thick cable (RG-11) has a diameter of 1.27 cm, the maximum transmission distance of 500 meters. Since the diameter is quite thick, so it's less flexible, not suitable for the erection in the indoor environment narrow, and RG-11 connector production methods are relatively many complex and can not be directly connected to the computer, it needs an adapter is converted into AUI connector, and then connected to a computer. Due to the strength of strong Thick maximum transmission distance longer than thin cable, therefore Thick main purpose is to play a role in the network backbone for connections forged by a thin cable network. Thick impedance is 75Ω. This cable is rarely used, is generally used for internal communication module connected to the transmitter, such as line transmission loss is small, but there are some drawbacks, such as hardness, difficult to bend. In addition, the transmission frequency of such cables can reach a very high majority of 30Ghz. Model CXJ - 50--3 type of cable structure The following table shows the structure of a typical material diameter (mm) 1. 0.93 2. The silver-plated copper inner conductor insulator polytetrafluoroethylene (PTFE) 3.00 3. ① no outer conductor seam annealing copper 3.58 ② tin (alloy) ③ seamless copper silvered copper seamless current process gradually progress, there have been some significant reduction in this type of bending wire, but I recommend against Flexibility less demanding place, try to use the traditional brass outer conductor of such wires, in order to ensure stability. Basic information English abbreviation SYV, often have 75-7,75-5,75-3,75-1 other models, the characteristic impedance is 75 ohms, to adapt to different transmission distance. Is asymmetric baseband video signal transmitted main medium. Main applications Main applications such as: stand of wiring devices, closed-circuit television (CCTV), master antenna systems (MATV) and color or monochrome transfer RF monitor. These applications do not need to choose a particularly stringent electrical tolerance precision video coaxial cable. Video coaxial cable characteristic resistance is 75 ohms, this value is not arbitrarily chosen. Physics proved that the optimal video signal attenuation occurs at 77 ohms. In low power applications, materials and design determines the optimal impedance of the cable is 75 ohms. Standard video coaxial cable has a number of both solid conductor stranded conductor design. Use multi-strand conductor cable to be bent design in some applications, such as CCTV cameras inside the tray and the stent device is connected, or the transmission cable remote camera. Also includes monitoring equipment