From: "Edward Wildgoose" <[EMAIL PROTECTED]> > I have now got a new Nova-T to replace my full featured card, but > unfortunately I'm getting a pretty scrambled picture which is > "recognizable" as the original channel, but has huge multicoloured > mpeg chunks all over it and lots of frame skipping (and big sound > breakup) on most channels, and a big lag in sound on the few channels > that the picture is OK.
Maybe your old full-featured card wasn't the problem after all, but your signal ;) > The Nova-T may be one of the newer designs and includes a remote control > in the box. The chips appear to be: Philips TDA10045H and Philips TDM1316L Except for the remote control this seems to be the card that Andrew has developed the TDA1004x frontend driver on it... > and I find that I need to use the tda1004x AND the ves1820 frontends > to make it work Humm, really? The VES1820 frontend really should not be needed. > Can anyone please shine a little light on this! I *suspect* that tuning > is failing, for example the exact freq in Hz for BBC one is something > like 505833330, but I have to enter this in dvbstream as "-f 505833", and > I have an idea that this is not close enough for a good lock. You have the wrong idea ;) The frontend module is using the 1/6th MHz step size, and as such, 505833kHz ends up as being exactly 50583333.333 kHz (plus oscillator offset) being programmed into the tuner PLL. > The reason for the suspicion is that dvbtune is reporting fairly high > error rates, and dvbstream just gives a single number, but it is in > the 500 range. Does this sound plausible? It seems you simply have a weak signal. While you might try fiddling the the frontend driver (Andrew used what ends up as a 36.166667 MHz oscillator offset like the TechnoTrend driver does, which the DVB IF amplifier downconverts to 5.166667 MHz, which is 166.667kHz off its centre frequency, while I proposed using a 36 MHz oscillator offset, which would be downconverted to 5 MHz, running the DVB IF amplifier right on centre, but the tuner 130kHz off-centre), this may only make a marginal difference - what you should really be looking into is improving the quality of the signal you feed into the card...! Regards, -- Robert Schlabbach e-mail: [EMAIL PROTECTED] Berlin, Germany -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
