What type of camera you should choose?

Cameras are divided majorly into interior and exterior, and each can be classified as infrared or non-infrared camera. In particular, “infrared visibility” has an important meaning in infrared cameras. This signifies the distance that infrared light can reach, and when choosing a camera, it must be referred to.

Infrared cameras implement that function, by two methods.
First method is by using infrared LEDs, and the other method is increasing the sensitivity of CCD, to surveillance well at night times. Keep in mind that, for the former method, the camera cost is cheap, but uses a lot of electricity, and for the latter method, the camera cost is expensive, but it is power efficient.

-- Interior Camera.

1. DX-471C is a general dome camera.

2. DX-5701 is an infrared ray dome camera, and is the most universal interior camera. It is most suitable in places where the ceiling height is approximately 3m.

3. DX-1701 is an infrared ray dome camera, mostly used in places with relatively high ceiling heights (approximately 3.5m to 5m), or places such as vaults, automated teller machine, or counters.

4. DX-4482 Series is a variable focus dome camera, which can change the angle of view of surveillance area. Also, since it is a 3-axis camera, it can show images without tilting in any installation conditions.

-- Exterior Camera.

1. DX-7711 is an exterior, bullet-style infrared ray camera, and is most universally used camera. It has visibility of approximately 20m with 24 LEDs.

2. DX-017 is an exterior, bullet-style infrared ray camera, and has visibility of approximately 30m, with 30 LEDs. Also, it has the widest visibility out of all the LED cameras.

3. DX-771D is an exterior, bullet-style infrared ray camera. It has visibility of approximately 30m~40m, with 36 LEDs.

4. DX-511B/521B is a exterior, bullet-style infrared ray camera. It has visibility of approximately 40m~50m, with 48 LEDs. It is a night surveillance camera which uses infrared LED, and is a basic model camera for general customers.

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The below are premium cameras for installation businessmen.

5. DX-871 Series is an exterior, bullet-style infrared ray camera, used as a control camera. To increase the surveillance effectiveness even at night times, the LED and CCD cell’s sensitivity were increased, and shows clear image quality even at night times. It features 8mm lens.

6. DX-7982SS/7988SS/7988SS Series is a long distance infrared ray camera. Infrared visibility is approximately 60m~80m. Basic lens of 12mm is installed, but can be replaced with 16mm, 20mm and 24mm, and the product can recognize car registration numbers from a long distance

7. DX-972/982/992 Series is a variable focus infrared ray camera. To decrease the power consumption, the number of LEDs was reduced, and the performance of CCD was increased. The infrared visibility is approximately 20m~60m. It shows clear image quality even at night times.

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.