Q:What is the reason for monitoring the camera's black screen?

Fourth, the monitoring of the video signal line broken (including line damage, poor contact), but also cause a black screen.

Q:Buy monitor camera attention to what

1, how to identify civilian high-definition camera? In general, civilian-grade optional cameras are all to 420 lines, 480 lines, 520 lines, etc. to represent the clarity of the camera, that is, on the monitor level Number of lines scanned. So the so-called business mouth of the pixels will be insignificant, because often will be exaggerated, in fact, difficult to achieve, so the civilian choice of monitoring the head should not be a measure of pixels. According to the interpretation of professionals, the usual surveillance cameras only two grades: low 330 lines or so, high solution 480 lines or so, many domestic products marked 420 lines is the 330 line products

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:How to choose to monitor the camera and video capture card?

Fifth: on-site monitoring and network monitoring When you determine the monitoring system installation, to consider whether the need for network functions, that is to say if you need to monitor the site at any time to monitor and control, you need to select a network-enabled monitoring host The To avoid the installation is complete but no network transmission function.

Q:HD camera and infrared camera difference

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

Q:What is the difference between monitoring the camera and the usual?

Security issues: ordinary USB camera to PC-based Windows operating system, must be inserted on the computer to use. In the security, quality and other aspects of performance significantly, etc., less than monitoring the camera.

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:The monitor camera does not display the image on the display

First, the camera is broken, two, the information line and plug the connection is not good, three, the camera driver is not installed, the resolution is too high tune.

Q:Is to use two TV sets, and can use this one to monitor the camera. Can I? How should I pick, but also with what accessories. Please prawn help me, thank you

The easiest way is what is not directly connected to the line, this method is the most simple and most reliable, with a long time to use three links is also easy to oxidize the problem! The line directly connected to the line, to the TV then then a lotus joint on the line, that is, like the DVD cable that line on the line!

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

2, calculate the number of cameras, and now the general camera 480TVL SONY CCD price between 270-380. Outdoor 50-80 meters of infrared light irradiation distance is enough, high-power infrared lighting equipment will make a lot better at night. But it was black and white at night.