Q:Monitor there is a camera monitor can not see, but the playback can see, how is it?

Playback can see that the front-end camera to monitor the host connection is good, the monitor can not see the reason is because the monitor host to monitor connection problems.

Q:Monitor the camera what is the zoom

Zoom, is the focal length, that is, long-term problem! Is to see the camera to the object far, closer. Change is to see the object to enlarge. Do you understand that?

Q:What is the minimum illuminance indicator of the surveillance camera?

Therefore, the use of different F value of the lens, the camera's minimum illumination value of the determination will have a decisive impact. Second, the light source color temperature. The color temperature is an indicator of the light wavelength content in the light source. A 3200K light source is mostly between 600 nm and 900 nm, and a 9300K light source is between 300 and 500 nm, so the different color temperatures will change completely Test Results. On a typical CCD sensor, a light source with a wavelength of 600 nanometers will produce 10 times more electrons than a wavelength of 900 nanometers. This is why the color temperature is particularly marked for the meaning of the minimum illumination measurement results.

Q:Now the surveillance camera really tmd nonsense, four hundred or five hundred products with more than a hundred USB camera are not as good as poor resolution did not shadow, and generally are so, monitoring products are pit father,

Almost no static power consumption. This makes CMOS power consumption is only about 1/3 of the ordinary CCD, CMOS important problem is in dealing with fast conversion of the image, because the current conversion is too frequent and overheating.

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.

Q:Install the monitor camera need to put a few lines

In the case of a dome camera that can be rotated, three lines, one control line (from the recorder to the camera), one video cable (from the recorder to the camera), one power cord (from the recorder to the camera, or the nearest socket Can also be).

Q:A camera for an hour how much space

Depends on your video recorder video format is CIF or D1

Q:What is the difference and connection between the optical zoom and the digital zoom of the camera in the security monitoring?

First of all they can achieve the image of the amplification, is often said to push or pull away.

Q:Monitor camera lens 4-6-8-12-16MM difference.

4 of 3-4 meters wide angle of 45 degrees, 6 of 6-8 meters wide angle of 38 angle, 8 of 8-12 meters wide angle of 35 degrees, 12 of 12-15 meters wide angle of 30 degrees, 16 of 20 meters / wide angle 27-28 degrees,

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

Surveillance camera prices are generally more than 100 to have a million, tens of thousands of precision will be much higher, and very sensitive, such as those according to the license plate, their accuracy is high, can automatically focus. I used to buy home before the home network camera, also asked some of the company's offer, and finally buy the wood Jitong, the effect is very good, the site forgotten! You can Baidu look