Q:What color is the monitor when the camera is turned on?

You should be equipped with infrared camera infrared camera infrared light with LED lights and photosensitive resistors, when the light is lower than the infrared light is lower than the minimum illumination of the infrared light when the infrared light will open, most of the red, there are White light and no red light at night no light, the specific and the relationship between the wavelength of infrared light.

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:Dvr monitor the video recorder without image output is what the problem

If the format is only the system disk, then the system, monitoring software must be reloaded, set; VCR is the embedded host, format only to clear the video data, the system program and settings are stored in the motherboard chip So there is no need to reset it.

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

Optical zoom is that we often say that the mechanical zoom (manual and automatic), manual is the lens we usually zoom, auto zoom is common is that we use the ball machine and PTZ to pull closer to control zoom.

Q:Will the video surveillance camera screen will jump out of this camera settings like the option?

Is the camera menu is transferred out, the general ball machine class camera will appear such problems, you can power the way to cancel the camera!

Q:Monitor the farthest distance from the camera can be far, which manufacturers out

Commonly used fixed lens camera lens focal length specifications are 4mm, 6mm, 8mm, 16mm, 25mm, viewing angle were about 80 degrees, 65 degrees, 50 degrees, 30 degrees, 15 degrees, the effective distance of 10 meters, 20 meters, 30 meters, 40 meters, 50 meters.

Q:Digital camera and analog camera difference

2, digital camera: refers to the camera image processing and signal recording all use digital signal to complete the camera. The biggest feature of such a camera is that the signal recorded on the tape is a digital signal, not an analog signal. Digital camera into the image signal by the CCD into electrical signals, immediately by the circuit digital, and then all the records before the processing of all digital processing, and finally processed the digital signal directly to the tape or memory card.

Q:HD camera is said that his clarity, infrared camera is that it's night vision function, in order to highlight the main features of the name of a

2, the lens sub-focus lens and zoom lens. Zoom lens focal length is variable, the scene can be closer to or push away, to achieve several times the zoom effect, use it to the blackboard on the board book clearly, can also be the whole picture of the classroom, the focus can not be achieved this function. Equipped with a lens for the electric three variable lens, can be zoom, focus and aperture adjustment. Zoom to zoom in and out of the picture, change the viewing angle and image size; adjust the focus and aperture, adjust the image clarity. Can be classroom teacher or a student's big picture clear real-time fixed in the entire screen, can also push to the whole class image.

Q:Monitor the camera screen black

Acquisition card problem if not your driver is not installed. That is the acquisition card itself is a problem

Q:What kind of material is needed to install the surveillance camera?

4, the number of video recorders, embedded professional hard disk video recorders have 4,8,16, the greater the number of road options can record the number of head more. Zhejiang Dahua video recorders for the 4-way 950 yuan or so. 8 Road, about 1,200 yuan 1615 yuan or so. If there are idle computer can also be installed to install the card to soft compression card for the column 4 Road 260 8 Road 380 16 Road 650