The DTL-401 is a digital DVB-T modulator which receives as input two transport stream (MPTS) form ASI and converts them into a digital RF frequency according to the standard DVB-T.O user can choose any number / combined programs of the two ASI inputs to create its own DVB-T bouquet at the output according to the requirements of egkatastasis.O maximum number of programs that can be selected depends on the configuration parameters of the DVB-T modulator and the size (in Mbps) of each program gives us the doryforos.Telos, the user can locally or remotely to fully handle the unit via Ethernet (websever).