Twisted pair video transmission cable

Twisted pair is the most common transmission medium in integrated wiring engineering. Twisted pair consists of two copper wires with an insulating protective layer. Twisting two insulated copper wires together at a certain density can reduce the degree of signal interference. The radio waves radiated by each wire during transmission will be canceled by the radio waves emitted by the other wire. So, what are the advantages of twisted pair video transmission? How to choose a twisted pair video transmission cable?

What are the advantages of twisted pair video transmission

Easy wiring and high cable utilization

Any pair of unshielded twisted pair cables widely laid in intelligent buildings can transmit one video signal. Since there are 4 twisted pairs in a Category 5 cable, 4 channels of video images can be transmitted, which is very important for many monitoring points. , For buildings that require dense wiring, it will undoubtedly greatly reduce the difficulty of wiring construction.

In addition, 1 of the 4 pairs of twisted pairs transmits video signals, and the rest can transmit audio signals, control signals, power supplies, etc., which provides the utilization rate of cables, avoids the trouble caused by separate wiring of various signals, and reduces engineering Cost, overcoming the difficulties of coaxial cable wiring and occupying a lot of pipeline resources, making the types of integrated wiring more unified.

Strong anti-interference ability

The twisted pair can effectively suppress common mode interference, and even in a strong interference environment, the twisted pair can transmit excellent image signals. For example, there will be strong interference in elevators and equipment rooms in buildings, and buildings in downtown areas will also be subject to various interference from the surrounding environment. The strong anti-interference ability of twisted pair cables is greater than that of coaxial cables. Advantage.

High reliability and easy to use

Using twisted pair to transmit video signal, a dedicated transmitter should be connected to the front end, and a dedicated receiver should be connected to the control center. This twisted pair transmission equipment is cheap, easy to use and stable in operation.

Overall cost reduction

Category 5e unshielded cables are widely used in the current integrated wiring of smart buildings, and their price is lower than that of coaxial cables. The economy and convenience of the line are more prominent.

Real-time transmission, real-time monitoring

The image signal transmitted by the twisted pair adopts the analog signal technology, which ensures the real-time performance of the monitoring system, and the image of the scene can be monitored in real time in the control room.

How to choose a twisted pair video transmission cable

In general, the twisted pair used for video transmission must be: unshielded, pure copper core, Category 5 or above standard cable.

The above is all about the advantages of twisted-pair video transmission and how to choose twisted-pair video transmission cables. In fact, twisted-pair cables are used in many places where industrial control needs to neutralize large interference and long-distance transmission. The widely used local area network also uses twisted pair, which has the advantages of strong anti-interference ability, long transmission distance, easy wiring, space saving, low price and so on. At present, through the use of advanced technology and special chips, it has been able to transmit high-quality image signals on twisted pair lines.