Migration from DVB-S CCM to DVB-S2 VCM
DVB-S to DVB-S2 Migration DVB-S defines support for one modulation format (QPSK) and five FEC codes 1/2, 2/3, 3/4, 5/6 and 7/8, but DVB-S2 defines support for 28 combinations of modulation and codes (MODCODs) ranging from 1/4 QPSK to 9/10 32-APSK.