The introduction of a common cable TV monitoring transmission system not only offers an affordable and high-quality solution for two-way broadband synchronous transmission of multi-channel monitoring signals, but also revolutionizes the traditional star-structured wiring used in surveillance networks.
1. Overview
With the deepening of reform and opening up and the rapid growth of the national economy, the number of urban migrants has significantly increased, bringing various social unrest factors. As a result, the security situation has become more complex, with a rising incidence of crimes such as burglary and robbery. In response, authorities have emphasized comprehensive social security management, making closed-circuit television (CCTV) monitoring an essential component of modern security systems.
CCTV is now widely used, and new technologies are constantly being integrated into surveillance applications. In terms of signal transmission, fiber optics and optical transceivers enable remote monitoring and improve the quality of image and signal transmission. For long-distance monitoring—ranging from tens to hundreds of kilometers—fiber optics remain the best option. However, for distances under 1–5 km, traditional coaxial cables are still commonly used due to cost considerations, as fiber optics can be economically inefficient for short-range systems. But coaxial cables suffer from significant signal attenuation, especially when the distance exceeds 200–300 meters, leading to noticeable image distortion. Even with video amplifiers, the improvement is limited, and image quality remains poor. Additionally, the project costs rise sharply. Therefore, transmitting images and signals over 1–5 km has become a major challenge in the surveillance industry. Is there a cost-effective and high-quality solution? A breakthrough technology has emerged—Aokang’s “common line†monitoring transmission system. This innovation has transformed the way TV monitoring signals are transmitted, enabling a significant leap in transmission distance.
2. Common Image Transmission Methods
Before the development of the “common line†TV monitoring transmission technology, image signals were primarily transmitted using conventional coaxial cables or fiber optics.
Coaxial cables were among the first used for video transmission and remained popular for many years. However, during transmission, both the overall amplitude and individual frequency components of the video signal experience significant attenuation, particularly affecting color saturation. As a result, coaxial cables are only suitable for short-range transmission, typically within 200–300 meters. While adding video amplifiers can extend the distance, it introduces challenges in installation, debugging, and maintenance, along with limitations on image quality and transmission range. Moreover, if control signals are sent alongside video signals, additional wiring is required, increasing both cost and complexity. Additionally, coaxial cables are highly susceptible to interference, especially in environments with strong electromagnetic sources like power plants or large factories. These limitations greatly restrict their application and development.
Fiber optics and optical transceivers are ideal for long-distance monitoring systems above one kilometer, while coaxial cables have clear limitations. Thus, for distances between 300 meters and 5 kilometers, there has always been a dilemma: using coaxial cables with amplifiers doesn’t work well, and fiber optics are too expensive. Fortunately, the emergence of broadband “common line†TV monitoring transmission equipment has solved this problem, making it an inevitable choice for monitoring systems spanning several kilometers to tens of kilometers.
3. Advantages of Common Cable Line Monitoring
The reason why Pufei’s “common line†TV monitoring has become a must-have solution is because it offers numerous advantages, including strong anti-interference capabilities, easy installation, and low cost.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
1. Overview
With the deepening of reform and opening up and the rapid growth of the national economy, the number of urban migrants has significantly increased, bringing various social unrest factors. As a result, the security situation has become more complex, with a rising incidence of crimes such as burglary and robbery. In response, authorities have emphasized comprehensive social security management, making closed-circuit television (CCTV) monitoring an essential component of modern security systems.
CCTV is now widely used, and new technologies are constantly being integrated into surveillance applications. In terms of signal transmission, fiber optics and optical transceivers enable remote monitoring and improve the quality of image and signal transmission. For long-distance monitoring—ranging from tens to hundreds of kilometers—fiber optics remain the best option. However, for distances under 1–5 km, traditional coaxial cables are still commonly used due to cost considerations, as fiber optics can be economically inefficient for short-range systems. But coaxial cables suffer from significant signal attenuation, especially when the distance exceeds 200–300 meters, leading to noticeable image distortion. Even with video amplifiers, the improvement is limited, and image quality remains poor. Additionally, the project costs rise sharply. Therefore, transmitting images and signals over 1–5 km has become a major challenge in the surveillance industry. Is there a cost-effective and high-quality solution? A breakthrough technology has emerged—Aokang’s “common line†monitoring transmission system. This innovation has transformed the way TV monitoring signals are transmitted, enabling a significant leap in transmission distance.
2. Common Image Transmission Methods
Before the development of the “common line†TV monitoring transmission technology, image signals were primarily transmitted using conventional coaxial cables or fiber optics.
Coaxial cables were among the first used for video transmission and remained popular for many years. However, during transmission, both the overall amplitude and individual frequency components of the video signal experience significant attenuation, particularly affecting color saturation. As a result, coaxial cables are only suitable for short-range transmission, typically within 200–300 meters. While adding video amplifiers can extend the distance, it introduces challenges in installation, debugging, and maintenance, along with limitations on image quality and transmission range. Moreover, if control signals are sent alongside video signals, additional wiring is required, increasing both cost and complexity. Additionally, coaxial cables are highly susceptible to interference, especially in environments with strong electromagnetic sources like power plants or large factories. These limitations greatly restrict their application and development.
Fiber optics and optical transceivers are ideal for long-distance monitoring systems above one kilometer, while coaxial cables have clear limitations. Thus, for distances between 300 meters and 5 kilometers, there has always been a dilemma: using coaxial cables with amplifiers doesn’t work well, and fiber optics are too expensive. Fortunately, the emergence of broadband “common line†TV monitoring transmission equipment has solved this problem, making it an inevitable choice for monitoring systems spanning several kilometers to tens of kilometers.
3. Advantages of Common Cable Line Monitoring
The reason why Pufei’s “common line†TV monitoring has become a must-have solution is because it offers numerous advantages, including strong anti-interference capabilities, easy installation, and low cost.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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