[linux-dvb] [vdr] stb0899 and tt s2-3200

Goga777 goga777 at bk.ru
Thu Oct 9 15:35:41 CEST 2008


> > > > it's not working with SR 30000 FEC 3/4 dvb-s2 8PSK, still the same
> > > > problem.
> > > >
> > > > kind regards
> > > >
> > > > Newsy
> > >
> > > It seems that patch from
> > > http://www.linuxtv.org/pipermail/linux-dvb/2008-July/027264.html is not
> > > applied. The internal PLL must be disabled when setting new frequency as
> > > is written in stb6100 documentation.
> >
> > has your July-patch any relation with stb0899 patches from Alex Betis ?
> >
> > http://www.linuxtv.org/pipermail/linux-dvb/2008-October/029455.html
> > http://www.linuxtv.org/pipermail/linux-dvb/2008-September/029361.html
> >
> > Goga
> 
> I don't think so as Alex's patches are for demodulator (stb0899) but my was 
> for tuner (stb6100). 
> 
> Regarding stb6100 doc the tuning procedure should be:
> 1. Disable PLL (LPEN_LPEN)
> 2. Set-up the tuner
> 3. Start PLL
> 4. Start VCO search
> 5. Wait for 5 ms
> 6. Disable VCO search, turn off VCO search clock and disable LPF BW clock
> 
> The steps 1-5 should be done in 5 steps (not less) and as I remeber I've got 
> better result when inserting small delay between steps 1 and 2 and the delay 
> from step 5 was set to 10ms. In stb6100.c are steps 1 and 2 done together 
> within 1 write to stb6100 registers and this seems to be not optimal for some 
> modulations.


that's why TT3200 owners have to try both patches together - from you and from Alex Betis ?
is it correct ?

Goga




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