Video Surveillance Cable Specifications and Common Problem Solving
Now video surveillance is more and more important for us, safety is the first, so we should know more about this knowledge, especially for friends who do optical communication engineering wiring. For video surveillance projects, there may be many problems in the process of using the monitoring system, and we often feel at a loss when faced with these problems.
In fact, we need to accumulate and solve these problems. There are certain rules among them. Many monitoring problems are related to the monitoring and use of cables. Let's take a detailed look at this knowledge.
For coaxial cables shielded by aluminum foil, when processing the aluminum foil, if the aluminum foil is not firmly adhered, all the exposed aluminum foil should be peeled off. If the aluminum foil is attached to the insulator and stands firmly, please confirm that the conductor at the cut end of the insulator and the debris of the aluminum foil need to be cleaned to avoid short circuit.
For BCP-C3B or comparable BNC's stepless (straight) tailpipes, the orientation of the tailpipe during installation is irrelevant. For BCP-C5FA or other tailpipes with a bevel (cao line) at one end, the tailpipe is also non-directional when installed. However, for the stepped tailpipe, such as the tailpipe of the BCP-C1, it is directional.
Cable connection strength refers to the maximum load that the cable can bear when it is pulled out of the connector under tensile stress.
Different connectors have different insertion loss values. For plugs, the insertion loss is about 0.1dB per connector (DC-2GHz).
ZR Cable video surveillance cable
Video signal transmission generally adopts direct modulation technology, in the form of baseband frequency (about 8MHz bandwidth), and the most commonly used transmission medium is coaxial cable. Generally, a dedicated SYV75 ohm series coaxial cable is used, and the commonly used model is SYV75-5 (its non-relay transmission distance for video signals is generally 300-500m); when the distance is long, SYV75-7, SYV75-9 or even Coaxial cable of SYV75-12 (in actual engineering, the transmission distance of thick cable without repeater can reach more than 1km).
Video surveillance cable The distance from the camera to the surveillance host is ≤ 100 meters, and a 75-3/64P video cable is used. The distance from the camera to the monitoring host is less than or equal to 200 meters, using a 75-3/96P video cable. The distance from the camera to the monitoring host is less than or equal to 300 meters, using a 75-5/96P video cable. The distance from the camera to the monitoring host is less than or equal to 500 meters, using a 75-5/128P video cable. The distance from the camera to the monitoring host is less than or equal to 800 meters, and a 75-5-1/128P monitoring video cable is used.
PTZ control cable The distance between the PTZ and the controller is less than or equal to 100 meters, and the cable is sheathed with RVV6×0.5. The distance between the gimbal and the controller is more than 100 meters, and the RVV6×0.75 sheathed cable is used.
The lens control wire adopts RVV4×0.5 sheath wire.
The distance from the camera to the monitoring host of the decoder communication line is ≤ 200 meters, and the distance from the camera to the monitoring host is ≤ 500 meters, and the RVVP2 × 0.75 shielded line should be used.
If the distance between the video surveillance camera and the host is more than 40 meters, it is necessary to consider using 220V centralized power supply, and transform the voltage to 12V at the camera end to supply power to the camera. In general, 220V power supply, as long as the system is not too large, less than 8 channels, If the distance is less than 200 meters, you can choose RVV2*0.5 wire. If there are more than 8 channels, all of which are high-power infrared cameras, you should consider using RVV2*0.75 power cord for power supply.
The above are the specifications and models of video surveillance cables and solutions to common problems. I hope we can gradually accumulate knowledge in optical communication, which is very useful for our life and work. ZR Cable focuses on optical communication products. Production and sales, fiber optic cables and other products are widely respected by friends in engineering projects.