Control the selection of wire and cable laying monitoring project selection ,
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1, surveillance cameras to monitor the project video cable from the host ≤ 200 meters, with RG59 (128 series) video cable. Distance of the camera to the monitoring host> 200 meters, with SYV75-5 video lines.
2, control engineering and control PTZ PTZ control line distance ≤ 100 m,
barcelona jerseys, with RVV6 × 0.5 sheathed cable. PTZ controller from> 100 m, with RVV6 × 0.75 sheathed cable.
3, camera control line monitoring project using RVV4 × 0.5 sheathed cable.
4, control engineering decoder communication lines should be used RVV2 × 1 shielded twisted-pair
5, the power cord if the camera monitoring system works with 20 of ordinary cameras, video cameras to monitor the host, the average distance of 50 meters, then Copper double plastic should be used BVV6m2 main power lines for the different distances that the power cord, see the following table: cameras to monitor the average distance of the host 34 ~ 50m 21 ~ 33m ≤ 20m power cable specifications (2 lines) 6m2 4 m2 2.5m2 Monitoring System Laying
1, Video cable laying Note
1.1, if the surveillance equipment - cameras to the monitoring host (the image processor, the control console or digital video recorder matrix) distance less than 200 meters, RG59 video cable available If more than 200 meters, should be used SWY-75-5 video cable, to ensure the monitor image quality.
1.2, for the installation of cameras in the elevator, wiring should be used in the lift wells and ground handling Star iron tank to reduce the elevator motor starts when the video signal caused by interference.
1.3, if the surveillance equipment - cameras installed outdoors (such as the compound entrance or parking lot, etc.), the line needs to go outside line or overhead cable to go through the line, conditions permitting, to install video arrester (because of the additional lightning protection equipment installed will cause the increase of total project cost), respectively,
kobe bryant jerseys, and monitor the camera side to install a host-side video of the lightning arrester, lightning arrester and each video will have to be grounded (to a separate outdoor play ground cameras, video control room arrester can be unified ground) to prevent lightning damage to equipment.
2,
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2.1, the analog control system, if installed with PTZ camera zoom lens, and used to control PTZ camera controller, control the line of choice should be based on the camera and the cloud microscope to determine the distance between the controller. When the distance is less than 100 meters, PTZ control line can be RVV6 × 0.5 jacket line; when the distance is greater than 100 meters, PTZ control line should be used RVV6 × 0.75 sheathed cable, camera control lines are used RVV4 × 0.5 sheathed cable. If the analog control system is controlled by the host matrix on the head and camera control, the general need to use the decoder, the control line laying the matrix can be controlled by reference to the technical requirements of the host.
2.2, the digital monitoring system, if the installation of monitoring equipment with PTZ zoom lens - the camera, you need the decoder on the head and camera control. Decoder is usually installed in the camera next to the decoder and digital video recorders to communicate using RS485 bus. Wiring should be shielded twisted pair RVVP2 × 1 digital video recorder from the nearest first introduced to the decoder 1, and then cited by the decoder 1 to decoder 2 ... 16 ... now pick up the digital video recorder decoder 16, and RS485 communication cable up to the total length of 1200 meters. Wiring diagram is as follows: See related posts in the basics. Decoder and AC 24V AC 220V power supply both types, if the choice of AC 24V decoder, are generally unified by the AC 24V power supply transformer. Of particular note is that because some of the decoder output DC 12V power supply interference, power supply for the camera when the image would have been affected, so need to harmonize the camera (12V) power supply. 3,
minesota twins jerseys, camera power cable laying Note market with DC 12V power supply operating current is about ordinary camera 200 ~ 300mA, integrated camera for the 350 ~ 400mA. If a small number of cameras (5 or less) and the distance between camera and monitor hosts close (less than 50 meters), each camera individually cloth RVV2 × 0. 5 power cable to the control room and use a small transformer. If the larger number of cameras should be used high-power 12V DC power supply centralized power supply. In program design and construction process, taking into account the total power of all the cameras and transmission line caused by the voltage drop (commonly known as \Monitoring for a building,
lebron james jerseys, the construction of general use 2 2.5 ~ 6m2 of copper double plastic line as the backbone of the power lead from the control room to the line of wells, and wells along the floor to go to the line where the camera well. The camera's power supply for the floor, the floor may be cited a line of well RVV2 × 1 or RVV2 × 1.5 (if the number of cameras that layer more than 6 units) power cable to the camera power supply, or RVV2 × 0.5 Jacket Line a corresponding power supply.