[linux-dvb] Re: SL1935 vs TDA8060TS

[David Zanetti <dave2@wetstring.net>]

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On Sat, 25 Sep 2004, Andrew de Quincey wrote:

> On Friday 24 Sep 2004 14:16, David Zanetti wrote:
> > Tin box is labelled:
> >
> >   SU1278/SH
> >   3112 297 12871
> >   239  HJ11 GC00056
>
> Aha, that would explain it then :)
>
> I believe when I was looking at that stuff that someone mentioned that certain
> of the older SU1278 tinboxes had a different PLL (a TUA6100, whereas newer
> ones have a TSA5059) in them! There's no way to tell really from the markings
> on it (there may be a date code I suppose, but who knows when they switched
> over).
>
> How recent is your card? Maybe they've switched yet again...

Purchased around May 2004.

> I'll add in your details to the hardware database.. However, I don't really
> want to complicate the stv0299 code any more until we've reorganised
> everything.

Understood :) It's not too much of a problem now as I've ordered a
Skystar2 2.6C to sit in it's place in the interim (possibly forever,
depends on many things..)

> Are there any error messages reported BTW? Or is it just that tuning does not
> work at all.

Tuning works. But I get a stream of TS continuity errors, and it's
unwatchable as it's breaking up every second or so. For clarity, it works
perfectly in win32, on the same hardware.

Eg, 12.456GHz vertical off Optus B1 has a bunch of FTA channels and
there's nothing on horizontal. Tuning vertical gives me:

FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
Signal=51182, Verror=0, SNR=56118dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51191, Verror=768, SNR=56217dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51517, Verror=0, SNR=56262dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=50881, Verror=256, SNR=56187dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51195, Verror=110, SNR=56235dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51177, Verror=256, SNR=56184dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51185, Verror=2304, SNR=56232dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51195, Verror=0, SNR=56259dB, BlockErrors=0, (S|L|C|V|SY|)

Tuning horizontal gives me:

FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
Signal=51511, Verror=0, SNR=56682dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51196, Verror=0, SNR=56658dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51201, Verror=0, SNR=56670dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51186, Verror=0, SNR=56559dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51197, Verror=0, SNR=56586dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51201, Verror=0, SNR=56583dB, BlockErrors=0, (S|L|C|V|SY|)
Signal=51196, Verror=0, SNR=56493dB, BlockErrors=0, (S|L|C|V|SY|)

And dumping a stream from either tuning gives me channels I expected on V,
with TS continuity errors regardless of which polarisation I choose.

If it's useful, I'm happy to give someone a shell on the box with the
tuner in it. It's reachable 24x7.

- -- 
David Zanetti           |  (__)
#include <geek/unix.h>  |  ( oo    Mooooooo
http://hairy.geek.nz/   |  /(_O ./
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