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[vdr] Re: maximum cable length for wintv nova-s
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
>
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--
Jarkko Santala <jake@iki.fi> http://www.iki.fi/~jake/
System Administrator 2001:670:83:f08::/64
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