Q:Buy monitor camera attention to what

The two contrast, so in the past we generally will be 480 lines of the camera called high-definition camera. In recent years, with the improvement of production technology, DSP processing can achieve 7MH high-pass filter, so that the level of resolution to 520 lines or so, therefore, there is a further high-definition camera products, that is 520 lines or 540 lines. But in fact the image clarity in the camera to achieve, in addition to the use of CCD technical indicators, the back-end signal processing technology such as hook circuit, contrast, color reproduction, signal to noise ratio, the installation of the lens and focus is accurate And so on factors, can affect the image clarity. The same product, the business line to 520 called high-definition camera products

Q:How many mm meters I use to monitor the camera

Finally, it is recommended that you choose the camera, it is best to choose a manual zoom lens, so that after installation can be based on the scene environment for a certain range of adjustments, it is convenient.

Q:There is a surveillance camera, want to adjust the location, hand touch the head, even live, do not know how the matter

Generally the case is the reason for static electricity, in theory, if your camera is using a transformer, that is DC power supply, then basically can be excluded from the leakage caused by the low-voltage (DC12V) camera, if There is a strong power into the words, then the camera will not be able to use, and here to note is not only the camera will have static electricity on your own may also have static electricity, you may say the same two cameras have a One is not, but you have to know the principle of electrostatic discharge, only when you come into contact with the conductive body when the static electricity can be released, you will have the feeling of Ma. In fact, if the camera is used properly, you do not have to worry about whether it is with static electricity, if you really worry, you can ground the camera, the general ceiling has a fire pipe and bridge, you can choose them to ground.

Q:Monitor the camera what is the zoom

The lens is equivalent to the human eye lens, if there is no lens, the human eye can not see any objects; if there is no lens, then the camera output image is a vast expanse of white, no clear image output, which with our home camera and camera principle Is consistent. When the human eye can not stretch the lens to the normal position, that is, people often say myopia, the front of the scene becomes blurred; camera and lens with a similar phenomenon, when the image becomes unclear , You can adjust the camera's back focus, change the CCD chip and the lens reference plane distance (equivalent to adjust the position of the human eye lens), you can blur the image becomes clear. Thus, the role of the lens in the closed-circuit monitoring system is very important. Engineering designers and construction workers should often deal with the lens: the designer according to object distance, imaging size calculation lens focal length, the construction staff often on-site commissioning, part of the lens is to adjust to the best condition.

Q:What is the difference between a wireless surveillance camera and a cable surveillance camera?

CCD is a charge-coupled device (Charge Coupled Device) short, it can turn the light into charge and the charge storage and transfer, can also be stored in the charge out of the voltage changes, it is ideal camera components, with its composition CCD camera has a small size, light weight, free from magnetic field, with anti-vibration and impact characteristics are widely used.

Q:Remote monitoring principle

First, the video signal from each camera is input to the RV-2000 video capture terminal. Then, the RV-2000 video capture terminal converts the video signal into a digital image of 25 frames per second through the MPEG-4 image compression algorithm, After the audio and video data stream through the optical fiber network forwarded to the video monitoring center; Finally, the video monitoring center of the computer to receive the front of the image and sound data from the decompression and through the computer display screen and sound card for real-time monitoring.

Q:I now on the 4th floor balcony by a monitor, the main monitoring downstairs car, what kind of camera is good

I suggest you put the width of the next I give you the election, the scope is not very wide, then the proposed election 6 or 8 mm so no blind car can see. Brand recommended domestic Hai Kang or Jing Yang foreign Samsung or Sony. The price is high but the quality is not blown. There are gods do not know to continue to ask questions

Q:What are the problems with the surveillance camera?

Monitoring the failure of the camera performance for several aspects: ① power supply is not correct equipment failure. ② equipment line connection reasons. ③ the quality of the equipment or components themselves. If it is installed problems caused by the problem, you can solve, but if it is to monitor the camera's own reasons, it would return to the factory maintenance. Now many manufacturers have done a good job after-sales service, such as Hai Kang, Dahua, Zhong Ying Xin and so on.

Q:Do you want to monitor the camera?

Do not need, are generally 12V1A power supply.

Q:Monitor camera parameters how to see

Aperture: the aperture installed in the back of the lens, the greater the aperture open, the greater the amount of light through the lens, the higher the clarity of the image; the smaller the aperture, the smaller the amount of light through the lens, the image clarity low. Usually with F (luminous flux) to represent. F = focal length (f) / light aperture. In the camera's technical indicators, we can often see 6mm / F1.4 such parameters, which indicates that the focal length of the lens is 6mm, luminous flux of 1.4, then we can easily calculate the aperture of 4.29mm. In the case of the same focal length f, F value is smaller, the greater the aperture, reach the CCD chip, the greater the luminous flux, the better the lens.