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:Monitor how the camera is connected

3. How to use the network cable to monitor the camera to save costs. Twisted pair transmitter generally refers to the use of cable to transmit video equipment, twisted pair transmission using differential transmission principle, the video signal will be converted into the same amplitude, the opposite polarity of the video signal, through the twisted pair transmission, The two ends of the opposite side of the video signal subtraction into a normal video signal, it can effectively suppress common mode interference, even in strong interference environment, its anti-jamming capability is better than coaxial cable, and through the Video signal processing, the transmission of the image signal than the coaxial cable is clear, the same network cable will not interfere with each other.

Q:Infrared surveillance camera at night (no light) no picture and flash is how the matter

Infrared light will flash, or no picture of the screen. First change the power, not the case, this camera should be broken. Under normal circumstances, in the dark, the infrared light is always bright, not flashing.

Q:57 Road 1080P surveillance video requirements to store a month, how much hard disk space?

A camera according to the compression of an hour is roughly 2.2G, 2.2 by 24 hours 53G * 57 cameras more than 3000 G, 30 days 91000G or so, that is to say about 91T hard drive, HD quite occupied hard disk, 720P basic small half,

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:What is the effective range of infrared surveillance cameras?

6 mm more than a narrow angle lens, the general effective distance is about 100 meters. And some 25 mm is about 150 meters, if the high-speed laser PTZ machine can reach 300 meters of infrared distance, but this cost is very high, about 13,000 or so, commonly used lens general angle is as follows: 2.8mm 101 ° 3.6 Mm 83 ° 4mm 76 ° 6mm 53 ° 8mm 35 ° 12mm 28 ° 16mm 21 ° 25mm 13 ° 1 / 3CCD and 1/4 CCD angle difference around 20 ° Hope to help you.

Q:What is the meaning of the high definition and standard definition of the surveillance camera?

If the application in the video surveillance, according to the specific monitoring target to select the camera standard, high-definition camera video files generated by the large, the need for large-capacity storage media, of course, if the monitoring is relatively static target selection standard is enough , If it is to monitor the dynamic target that will consider the high-definition camera, or when the screen playback can not see the characteristics of moving targets. Specific issues specific treatment.

Q:HD camera and infrared camera difference

At present the HD camera refers to the HD 1080P or HD 960P or HD 720P camera, and 1080P called Full HD.

Q:What is the 960h in the surveillance camera?

960H is a set of quasi-HD solutions defined and developed by Techwell and Sony, which incorporates Sony's new generation of 960H CCD Sensor and Effio solutions, and the DVR side uses Techwell's latest TW9960 analog quasi-HD A / D solution. 960H resolution of 960 * 576, relative to the traditional D1 (720 * 576) overall picture clarity (details) increased by 30%. For the original analog monitoring system to upgrade the upgrade, only the front-end camera and back-end storage replaced by 960H products, transmission part can continue to follow the original system coaxial cable, the system architecture and the original analog system basically unchanged, Engineering and users without the need for professional skills training can be the original D1 system upgrade to 960H quasi-HD, the overall increase in the screen 30% at the same time will not change the user's habits, suitable for limited budget but want to experience " User.

Q:How to use video surveillance video surveillance

Forget to tell you, a decoder card (4 Road Dahua) 1200 yuan, 300 yuan conversion interface.