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

[Margit.Fiegert@t-online.de (M. Fiegert)]

Hello Claas,

can you test a DVB-S with the long cable?

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!

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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