Hi, I tried using some capacitors like 100mfd,470mfd etc directly at the tuner pins. It did not help. ripple at the supply is around +/- 50mv. I want to tune to 3255KS/s(sym rate) and 3580MHz(freq). I am Using a scope of ~400MHz bandwidth.
Regards, Vidya > Vidya Srinivas wrote: >> Hi, >> >> Thanks for the response. I have checked the power supply and it is >> stable. > > Have you checked for RF ripple introduced by switching power supplies? > Use a scope of ~100MHz bandwidth or higher. Or just believe me and try > adding some fat lowESR caps directly at the tuner pins. > > By playing and experimenting you can distinguish which ones are really > required, probably only a pretty small and cheap cap at the 5V tuner > supply line will do it at the end... > >> We have designed our own satellite receiver. We are using >> SU1200 MK2 series. > > yes. > >> Anything else i can check? Anything else in software >> special for low bit rates? > > no. > > Holger -- Vidya.S BPL TELECOM LTD 11th KM, Arikere Bannergatta Road, Bangalore - 560072 email - [EMAIL PROTECTED] Ph - 6589080 extn - 2005 -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
