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NTSC Video FormatDepending on where you live, your country may use any one of three video standards: * NTSC (National Television Standard Committee), developed in the U.S. in 1953, is used in North America, most of South America and Japan, and it provides video resolution up to 525 lines. * PAL (Phase Alternating Line), developed in Europe in the early 1960s, provides up to 625 lines of resolution, and it’s used in most other areas of the world. * SECAM (Sequential Color Memory), which also provides up to 625 lines of resolution, is much less common but is used in France and parts of Eastern Europe and Africa. (PAL usually works for SECAM.) NTSC and PAL are not compatible. To make sure you’re choosing the right CCTV, be sure you know which video standard your country uses before you make your purchasing decision. For your reference, to find out what video standard is used in your country, go to: http://www.gadspot.com.tw/download/signal_format.pdf |
