Hi Igor, Igor wrote: > can somebody to explain when need switch on or switch off this options ? > > dvb-s2 initial pilot on/off > 0 OFF > 1 ON At least on Astra it depends on the FEC: http://www.aps.de/resources/pdf/en-shared/technical_support/Digital_Satellite_Front-End_1_1_0.pdf > dvb-s2 rolloff > 0=0.20 (DVB-S2) > 1=0.25 (DVB-S2) > 2=0.35 (DVB-S2/DVB-S) You can get the roll-off factor from the satellite delivery system descriptor, which is specified in ETSI EN 300 468 V1.8.1 (2007-10). The syntax of this descriptor was changed with the introduction of DVB-S2. Regards, Andreas _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb