monitor Video cable Specification of
：
Core material | Pure copper | brand | ICT |
Insulation material | Solid poly ethylene （PE） | Processing customization | yes |
Shielding layer | Copper wire/copper clad aluminum wire | Larger outer diameter of wire | 10（mm） |
sheath | Polyoxyethylene（ PVC ）Black | Product certification | ISO9001 |
model | SYV75 series | characteristic impedance | 75Ω |
Main purpose | Video signal transmission | Specifications | 48 series/64 series/96 series |
Number of cores | Single core | Length of each coil of wire: | 200m/500m |
Service temperature | -40～65℃ | insulation resistance | 5000MΩ/km |
coca Plug type | BNC、 Aviation plug, TV9.5, R CA etc. | standard | GB/T14864-93 |
What is the monitoring line and video line
Monitoring line The video cable is a kind of wire and cable used to connect the security surveillance camera and the real terminal (computer or display, etc.), which is used to transmit the image data taken by the surveillance camera. The monitoring video cable is Coaxial cable It is also called a coaxial video cable. The letter code is syv, so it is also called syv cable or video coaxial cable.
Monitoring line video line
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Monitoring line Video cable is widely used and is closely related to our life. We can see surveillance cameras in residential areas, office buildings, street corners and other places. Of course, there are surveillance video cables behind. Therefore, it is the monitoring video cable that provides us with a good security guarantee.
What are the specifications and models of the monitoring video cable
The specifications and models of SYV cable 75 Ω include: SYV-75-3 SYV-75-4、SYV-75-5、SYV-75-7、SYV-75-9、SYV-75-12， Among them, SYV-75-5 is widely used and divided into SYV-75-5-1, SYV-75-5-2, and SYV-75-3 is also divided into SYV-75-3-1 and SYV-75-3-2.
Structure of monitoring video cable
The structure of monitoring line video line from inside to outside is: single core copper → insulation material (PE, etc.) → braid layer (copper braid, aluminum braid, etc.) → outer sheath (polyethylene PVC, etc.)
Monitoring line The video cable must have a good shielding effect. The role of the braid layer is here. The shielding layer can well shield out external interference (magnetic field, etc.), and provide a good protection environment for the transmission of core signals.
This structure of coaxial cable makes it have high bandwidth and good noise relief characteristics. The bandwidth of coaxial cable depends on Cable Length. A 1km cable can achieve a data transmission rate of 1Gb/s~2Gb/s. Longer cables can also be used, but the transmission rate should be reduced or intermediate amplifiers should be used.
Purpose of monitoring video cable
It is mainly applicable to signal transmission between transmission equipment and various digital program-controlled exchanges, optical transmission equipment internal connections and distribution frames, and used to transmit data, audio, video and other communication equipment. The sheath is made of flame retardant material with high safety coefficient. The advanced process is adopted to produce the cable, so that the impedance uniformity of the cable is good.
How to install monitoring video cable connector
Generally, the video cable of the monitoring cable is connected to the BNC The joint shall be soldered at both ends. It is better not to use solder paste. If the residual paste is not cleaned properly, there will be endless consequences. It is better to use high-quality solder wire. The rosin in the solder wire has a good soldering effect and will not corrode the device. There are two welding methods:
1. Peel the wire, insert the wire core into the welding hole of the BNC head (or screw it down), put the solder wire on the welding position, press the soldering iron head on the solder wire to melt it, and move the soldering iron head to make the solder penetrate evenly. The same is true for welding of shielding layer.
Important points: The welding speed should be fast, and the soldering iron head should be removed before the rosin volatilizes to ensure that the welding points are smooth and free of sharp thorns.
2. Peel the wire, put the solder wire on the wire core and melt it with a soldering iron, insert the wire core with tin hanging into the welding hole of BNC head, melt the solder on the wire core again with a soldering iron and make the BNC head fuse together.
Key points: the speed of tin hanging on the wire core should be fast to avoid damaging the insulation layer. The wire core should have enough tin hanging to ensure firm welding.
