Today, Hangzhou Zion Communication Co., Ltd. takes everyone to talk about which cables need to be involved in the TV monitoring system: The common video transmission cable for camera video signal transmission cable is the 75Ω series of thin coaxial cables, but the attenuation of the video signal is also different for coaxial cables with different wire diameters. The thicker the cable, the smaller the attenuation.
1. When the distance from the camera to the sub-monitoring center is ≤300 meters,
RG6U CCS 95%AL PVC 75 Ohm CCTV Coaxial Cable can be used;
When the distance from the camera to the sub-monitoring center is ≤500 meters,
RG6U S BC 95%CCA PVC 75 ohm CCTV Coaxial Cable can be used;
2. The power cord of the TV monitoring system of the camera adopts separate wiring. The main switch is set in the monitoring room, and the entire monitoring system is directly controlled by the UPS power supply. Under normal circumstances, the power cord is wired according to AC 220V, and then the camera Converted to DC 12V by the adapter. Some cameras use 5V or 12V, 24V DC power, and the power supply method is different.
3. Use the camera device cable with a motorized pan/tilt and motorized lens. For the camera device with motorized pan/tilt and motorized lens, in addition to the above video signal lines and cable lines, the transmission line between the on-site decoder and the control center must also be considered Cable, generally use 2 core shielded communication cable (RVVP) or category 3 twisted pair, UTP core cross-section area is 0.3m㎡ ~ 0.5m㎡.