The most basic compositions of CCTV installation

Note) Excerpts from DAIVX installation manual

These are the most basic compositions to form a CCTV system.
That is, you need four major parts to from a CCTV system.

1. Adaptor: device which supplies power to the camera.
2. CCTV cable: cable which connects camera and DVR.
3. Camera: cameras are divided into major categories of general cameras, infrared cameras, indoor cameras or outdoor cameras.
4. DVR Board: device which converts analog signals into digital signals to display on the computer monitors and to perform image processing.

As shown in the above block diagram, the CDD camera required for filming and the DVR Board device which converts the analog signal from the camera into digital signals perform the greatest role.



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A. DVR Express Board : 

*There are 5 rating in DVR Express.

1. L-DX model is a model which has no internet support. It is called DVR Express Light.
2. S-DX model has remote surveillance function as the model allows internet support. These functions can be seen from other competing companies.
3. G-DX model has internet function, so remote real time surveillance is possible, and furthermore it contains the ability to search past information from distant places. When using CCTVs, this is the function which the users naturally desire, however as this process is complex, the function is only available from DVR Express products, and is the most advanced function even from the global perspective.

4. H-DX model is a product called DVR Express HD.
This product expresses the images of general cameras to the extreme level.
The products being sold currently express 320X240, 640X480 and 720X480, but they all fall in the category of the image quality of 1CIF. However, DVR Express HD shows the image quality of 4CIF; therefore it is a product which allows the users to determine the difference between 27 pixel cameras and 41 megapixel cameras.

5. DX-System is a product which supports functions such as block construction, divided surveillances and multiple surveillances, which are required when using 16 or more channels of DVR.

All of DVR Express HD and Systems shows display level of 4CIF. This provides all the functions which DVR Express has, such as remote surveillance, remote searching, multiple accesses and multiple access searching.

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B. Camera :

Cameras are divided majorly into interior use and exterior use, and each can be classified as infrared or non-infrared. In particular, “infrared visibility” has an important meaning in infrared cameras.