The DRX 3974D and the DRX 3976D are fourth-generation COFDM demodulators, that offer today’s highest level of front-end integration, resulting in ultimate DVB-T digital reception according to ETS 300 744. The DRX 397yD series exceeds with margin the DTG and NorDig-Unified v1.0.2 Receiver Specifications. The DRX 3974D and the DRX 3976D use cutting-edge digital filtering techniques in combination with a high-performance A/D converter and PLL configuration. This leads to superior performance figures in the presence of digital or analog adjacent channels. Progressive digital algorithms in the channel estimator of the DRX 3974D and the DRX 3976D result in exceptional performance in multi-path and dynamic echo conditions. This is important for Single Frequency Networks (SFNs) and indoor reception. The state-of-the-art noise cruncher suppresses noise disturbances from sources such as cars, phones, and other electrical appliances. The digital performance parameters will become more and more important with the further spreading of DVB-T worldwide. To allow for optimum reception performance, the DRX 3974D/DRX 3976D implement the Maximum Ratio Combining (MRC) diversity algorithm. By connecting two or more DRX 3974D/DRX 3976D devices, utilizing a glueless interface, the reception performance is greatly improved. This is especially useful under mobile or in-house reception conditions. |
