With the development of technology, whether it is home security monitoring or commercial security, it is inseparable from the help of cameras. And the cellular signal blocker, a device that sounds a bit mysterious, is also being mentioned more and more by people.
In simple terms, a camera with wired signal transmission is a camera that transmits video signals through wired means (such as coaxial cable, optical fiber, cable, etc.). This type of camera is mainly used in monitoring systems, such as home security, store monitoring, company office areas, etc. Compared with wireless cameras, wired cameras usually have more stable signals, longer transmission distances, and are not easily interfered by wireless signals.
The impact of cellular signal blockers on cameras with wired signal transmission
Although cellular signal blockers are mainly used to interfere with wireless signals, they are not completely without impact on cameras with wired signal transmission. The following are several possible impacts:
Electromagnetic interference (EMI)
The strong electromagnetic waves emitted by the cell phone jammer not only interfere with wireless signals, but may also cause electromagnetic interference to surrounding electronic equipment. Although wired cameras transmit signals through cables, if the power of the cellular signal blocker is large enough, the electromagnetic waves it generates may also interfere with the transmission of cable signals. Especially when using cables with poor shielding or poor quality, this effect may be more obvious, manifested as problems such as picture jitter and signal loss.
Power supply interference
Some wired cameras use PoE (Power over Ethernet) technology to transmit data and power simultaneously through network cables. If the electromagnetic interference of the cellular signal blocker affects the PoE device, it may cause unstable power supply of the camera or even a temporary power outage, which will affect the normal operation of the camera.
Network equipment impact
For wired cameras that transmit video signals through the network, the interference of the cellular signal blocker on network devices (such as routers, switches, etc.) will also indirectly affect the camera. If the network equipment is interfered with and the signal transmission is unstable, the video stream of the camera may be stuck or interrupted.
Since the cellular signal blocker may affect cameras with wired signal transmission, how should we deal with it? Here are some suggestions:
Use high-quality shielded cables
Choosing high-quality shielded cables for signal transmission can effectively reduce the impact of external electromagnetic interference on signal transmission. The shielded cable has a metal shielding layer inside to prevent external electromagnetic waves from interfering with the signal inside the cable.
Increase physical isolation
When installing cameras and signal transmission equipment, try to stay away from areas where cellular signal blockers may be used. Physical isolation measures such as metal shielding boxes can be added around key equipment to reduce electromagnetic interference.
Enhance the stability of the power supply system
For cameras powered by PoE, ensure the stability of the power supply system, select high-quality PoE switches and power supply equipment, and reduce the impact of electromagnetic interference on the power supply system. At the same time, consider using power cords with electromagnetic shielding functions.
Optimize network equipment
For cameras that transmit signals over the network, select network equipment with strong anti-interference capabilities, and consider setting up dedicated network channels to reduce the possibility of interference. Network equipment can use metal casings and have good electromagnetic compatibility in design, which can effectively resist external electromagnetic interference.
Although the impact of cellular signal blockers on cameras with wired signal transmission is not as direct and obvious as that on wireless cameras, it is still not negligible. By taking appropriate protective measures, we can effectively reduce the impact of cellular signal blockers on cameras and ensure the normal operation of cameras. I hope this easy little popular science can help you better understand the things between cellular signal blockers and cameras! Whether you are a technology geek or an ordinary user, you can better deal with various possible interferences and enjoy the convenience and safety brought by technology.