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Comtech EF Data Demonstrates 10 Percent Roll off Functionality for DM240XR Modulator

By Caleb Henry | December 18, 2013
      digital video broadcast percent

      Comtech EF DM240XR modulator. Photo: Comtech

      [Via Satellite 12-18-13] Comtech EF Data Corporation, a subsidiary of Comtech Telecommunications, has successful demonstrated 10 percent roll off functionality for its digital video broadcast modulator, the DM240XR, to an Asia-based Direct-to-Home (DTH) operator. The new functionality delivers benefits to both new and installed base customers of the DM240XR.

      The current released Digital Video Broadcast (DVB) standard is DVB-S2 (ETSI EN 302 307). This current standard allows for roll off figures of 35 percent, 25 percent and 20 percent. Lower roll off figures, such as 10 percent, may be used to leverage additional satellite capacity and allow more video channels to be transmitted per satellite transponder.

      The new 10 percent roll off functionality for the DM240XR modulator will enable operators and broadcasters to increase service offerings with more channel selections and to facilitate the conversion of Standard Definition (SD) to High-Definition (HD) channels while still using the same occupied satellite space segment. This translates into increased revenue opportunities for operators and broadcasters without increased satellite capacity operating costs.