[vdr] Re: maximum cable length for wintv nova-s

[Jarkko Santala <jake@iki.fi>]

On Mon, 21 Apr 2003, M. Fiegert wrote:

> I fight with my nova card for a long time now (eg. did ask everybody at
> the real life meeting last year).
> I checked a lot,  improved a lot but still have problems. They started
> when I moved to the new P4 2.26GHz computer.
> I never had problems with  the nova in an old K6-2.  DVB-s card workes
> always perfect in both computers!

One thing I can say about my budget WinTV Nova-T card is that it has never
worked with any VIA chipset motherboard I've tried, Sockat 7 or Socket A,
doesn't matter, it just gave huge amount of errors in stream.

No problems with SiS (my previous K6-2+ setup and a Duron system I had)
or nVidia nForce (my current Athlon XP system).

	-jake

>
> The story in short:
>     - K6-2 400MHz, 1*DVB-s, 1* Nova was working perfect.
>     - Then I needed a pci slot and removed the nova
>     - Half a year later the processor died (my fault) and I assembled a
> whole new computer, P4 2.26MHz, currently pre-2 driver.
>        So here the computer changed and half a year passed: newer
> driver!,  maybe the dish slightly moved or some trees grow?, card got
> older?,...
>
>     - In this computer I never managed to get the nova working properly.
>        It was very bad until I moved away the dect transmitter.
>        It got much better with it's own interrupt (before I could
> actually see the network traffic ;-)
>        I didn`t change pci lattency, because there is no bios switch and
> I didn't have the time to look for other possibilities (thought of ctpci ?)
>        Maybe that could solve the issue?
>     - No problems with DVBs but artefacts and audio glitch about every
> minute with nova, same after changing the cables!
>     - The Signal Strength and SNR measured with some AIO including Tech
> Patch look even better for the nova. Especially on rainy weather
>        dvb-s  sometimes shows heavy bit-errors without visible
> disturbances?!
>
> Conclusion: I think
>       - either in the nova cards (or just some - mine and yours?) the
> tuner isn't as good as with dvb-s or
>
>       --> the driver for the nova (crc ...) has more problems with weak
> signals than the arm code of dvb-s, or with irqs, lattency whatever ???
>
> > No, I just do recordings on the described system. It's a Pentium IV
> > 2.4 GZ with 1 GB Ram. Replaying is done in a vdr client system with a
> > full-featured tt card rev 1.6. Recording and so on IS working on a
> > much shorter cable.
> >
> > How can I check the signal strength with a DVB card and current
> > drivers (linux-dvb.2003-04-13)?
>
> A friend of mine made a version where the signal strenght can be shown
> very comfortably for all cards, assuming a full featured card with osd
> in the system. I can ask him if I may forward this to you if you are
> interested?
>
>
> Greetings
>
>      Michael
>
>
>
>
>
>
>
>

-- 
Jarkko Santala <jake@iki.fi>            http://www.iki.fi/~jake/
System Administrator                    2001:670:83:f08::/64


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