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2, CCD pixels, the more pixels, the higher the resolution of the image, the more clear, now more than 250,000 and 380,000 pixels for demarcation, more than 380,000 pixels for high-definition cameras.
3. Horizontal resolution. The typical resolution of color cameras is between 320 and 500 TV lines, and currently the market is dominated by 420TVL and 480TVL resolutions.
4, the minimum illumination, also known as sensitivity. Moonlight and star-level high-sensitivity cameras can work in very dark conditions. For general cameras, 2~3lux is the lowest illumination. Now 1lux ordinary cameras are popular and most commonly used.
5, scanning system. There are PAL and NTSC systems.
6, camera power. The AC has 220V, 110V, 24V, and the DC is 12V or 9V.
7, signal to noise ratio. The typical value is 46db. If it is 50db, the image has a small amount of noise, but the image quality is good. If it is 60db, the image quality is excellent and no noise occurs.
8, video output. Mostly 1Vp-p, 75Ω, all use BNC connectors.
9, lens installation method. There are C and CS modes, the difference between the two is that the sensing distance is different.
[ Huaqiang Security Network News ] CCD color surveillance camera basic indicators 1, CCD size, that is, the camera target surface. Now 1/3 inch has become popular, and 1/4 inch has also been commercialized.