[linux-dvb] FIX: No recovery after lost lock

Johannes Stezenbach js at linuxtv.org
Wed Sep 28 01:00:52 CEST 2005


On Tue, Sep 27, 2005 at 12:08:02PM +0100, Andrew de Quincey wrote:
> On Tuesday 27 Sep 2005 11:11, Marian Durkovic wrote:
> > > > Anyway, recovery seems to be faster without fine-tuning, at least with
> > > > my Nexus, higher symbol rates and a good signal...
> > >
> > > Hmm, weird, I added the enhanced code because thats what hauppauge
> > > appeared to be doing, and I thought it seemed to work better at the
> > > time.... however looks like that isn't the case. I've no problem if you
> > > want to rip it out.
> >
> > Actually I did some further testing and the use of derotator has a very bad
> > side effect - it reduces the available SNR. The higher is derotator_freq,
> > the lower is SNR. In my setup, when derotator is set for > 9 MHz, I can't
> > get the lock anymore (of course I have properly shifted the tuning
> > frequency). It's far better to perform normal tuning, which does not reduce
> > the SNR.
> >
> > Thus I'd suggest to remove the enhanced tuning section and use standard
> > tuning for zigzags.
> 
> Yup, I agree.
> 
> Want me to do it?

Hm, since no one else screamed "no, wait, I'll do it":
Yeah, it would be nice if you could take care of it.

Thanks,
Johannes



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