Video Surveillance Installation Basic Guide

We now know three systems of video surveillance : analog, digital and hybrid (analog + digital). If we talk about analog systems, it means that the video signal goes from the camera to the DVR or video acquisition card through a coaxial cable. The connection is made ​​with BNC connectors. If we refer to the video surveillance digital, in general we have IP cameras. The connection of these chambers is made ​​directly to the network through a UTP cable network. If we talk about a hybrid system, it leads to combine analog cameras with IP cameras.

The difference between analog cameras and IP cameras:

Analog cameras with the right system, such as stand-alone DVR or video acquisition card that is inserted into the computer and thus becomes a DVR, recorded in a maximum resolution of 720×576 pixels. The face is recognized at a distance of 6 to 8 m from the camera. With a goal we can record of 6-14 m away from the camera and recognize the face in a wider area. With speed dome cameras we can record several areas that are about 100 m away from the camera and recognize a face in this case with a distance of 100-107 meters away.

With IP cameras the story is similar, if not talk about megapixel cameras. These can be recorded with a resolution up to 1240 x 1028 pixels if we refer to 1.3 MP (megapixel), or with a resolution up to 2600 x 200 pixels if 5 MP. With a 5MP we can recognize a face in a guarded quadrant of 25 mx 25 m. Instead, with a 1.3 MP, a quadrant of 12 mx 12 m. A 1.3 megapixel camera has a resolution 4 times higher than an IP analog camera or recording with a resolution of 720×576 pixels.

Projecting an installation:

When an installation is projected is first necessary to know which areas you want to cover and what details serve, for example, one serves only the panoramic view, but another may want to also see the faces of people. In this case, as explained above, to cover an area of ​​6m x 6m enough a normal IP or analog camera; to cover an area of ​​20 mx 20 m can put a 5 megapixel camera or more of an analog camera featured on Deluxesurveillance. Thus, it is cheaper to put a camera of 5 megapixels.

When we know how many cameras we serve and what type, we choose the most suitable installation. If you see you need 4 analog cameras, DVR will choose a type or a basic acquisition card for PC installation. If you prefer IP cameras, it is advisable NVR software system or a PC or appropriate server. If you want to combine analog and IP cameras, will buy a hybrid system, ie a system with acquisition card + IP + PC software for cameras or a suitable server. Overall, our Dynacolor DVR systems are optimized for analog and easy to install cameras. For a more serious installation, perhaps recordings, better one or Nuuo Geovision system (DVR acquisition card + PC). These systems can also be upgraded with the NVR software for hybrid systems, if in the future you want to install some IP camera. However, choose IP cameras, the NVR is advisable Nuuo Nuuo system or software with the PC or appropriate server.

In short, after choosing cameras and facilities, must select the appropriate cables, power supplies, cabinets, UPS, connectors, etc.

 

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