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

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

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