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