[linux-dvb] Re: Troubles with DVB-C

["Philippe" <gaultier.philippe@free.fr>]

Hi,

So noone as any idea to help me... Any trick to tune the ves1820 chip ....

Cheers 
Philippe

> First, about the coax cable and the wiring :
>  I have a brand new cable with shield.
> The official decoder (the one I received from my cable operator) is
> plugged
> behind the VDRBox.
> Everything is OK on this decoder. So it's not a cable trouble...
> 
> Wall|--coax--|VDRBox|--coax--|official decoder|--coax--|VCR|--coax--|TV|
> 
> > So if you don't want to bother using the specific term, just always use
> > "multiplex".
> >
> > And what you call a "channel" is actually a "service" in DVB terms (or a
> > "program" in MPEG-2 terms).
> 
> OK, I'll use multiplex and services
> 
> So I have 21 multiplex with :
>  - 54 services (radio)
>  - 157 services (TV)
>  - a lot of data services
> 
> > > I tried to change the pwm value (ves1820 specific) but it seems
> > > that it does nothing,
> >
> > The PWM value is only for the Fujitsu/Siemens DVB-C card and has no
> effect
> > on any other card.
> 
> Too bad
> 
> >
> > > I always have :
> > > DVB: VES1820(0): AFC (-4) 26855Hz
> >
> > Do you also have this on the 3 channels mentioned above?
> 
> For the services on the 3 "bad" multipexes, I always have :
> DVB: VES1820(0): AFC (-4) 26855Hz
> 
> Except one time, I had the following line :
> DVB: VES1820(0): [AFC (-3) 20141Hz]
> 
> >
> > > As I told you before, I do not understand why my official decoder
> > > works without any trouble...
> >
> > What do you mean by "official decoder"? Another piece of hardware? The
> > reception hardware you're using in your PC may have different
> > characteristics, or rather "weaknesses" at certain frequencies. If
> you're
> > not getting any better results using the manufacturer's official Windows
> > driver, chances are the hardware can't do any better.
> >
> 
> Well when I suscribed to the cable digital package, I received :
>  - DVB-C receiver (built by sagem)
>  - Viaccess card
> I opened the decoder to find out the frontend is a ves1820 too
> 
> So I have :
>  The "official decoder" to watch TV
>  The "VDRBox" which acts as a digital VCR
> 
> Cheers
> 
> Philippe
> 
>