TV EXPLORER HD+ manual - Promax

USER’S MANUAL. TV EXPLORER HD +Figure 35.- DVB-T2 (COFDM) signals CBER measurement screen.In a digital reception system (DVB-T2), after the COFDM decoder other twodifferent correction methods are applied (see following Figure). In this case, as theprevious one, each time we apply an error corrector to a digital signal, the error ratechanges, therefore if we measure, for example, the error rate at the output of theCOFDM demodulator, at the output of the Low Density Parity Check (LDPC) decoder,and at the output of the BCH decoder, we obtain nothing more than different error rates.This is the reason because the BER measurement is provided after LDPC (LBER). Italso shows the LDPC iterations, which is the number ot times that the LDPC errorcorrector goes through the signal.EnglishCOFDMDEMOD.Figure 36.- Digital reception system via terrestrial. (DVB-T2).Figure 37.- DVB-T2 (COFDM) signals LBER measurement screen.01/2011 Page 59