Cat visison provides a wide range of digital headend products to serve cable and satellite television market in india. These products incorporate advanced mechanism and modern equipments to provide better performance. As part of these products, the company offers s100 scrambler. This is specially developed for scrambling the digital television signal. It supports the simultcrypted scrambling, fixed or variable control word scrambling, embedded control word generator scrambling of the program stream and the elementary stream. S100 scrambler comes with following salient features: