[linux-dvb] stv0297: improvement for qam256 modulated channels

e9hack at googlemail.com e9hack at googlemail.com
Sun Oct 28 09:21:36 CET 2007


2007/10/28, e9hack <e9hack at googlemail.com>:
>
> I've seen two different values for the carrier offset on Windows XP for a
> TT-C2300. Registers 20/21h
> are programmed with 3c0a or 3ba4 (carrier offset 6763 or 6718). The value
> depends on the driver
> revision. On a TT-C1500, this value is 4000 (carrier offset 7209). It may
> be possible, that the
> value is calculated from some other values. I know, that the patch has no
> effect for some testers.
> This is the first report with a failure. So it isn't possible to add the
> patch.
>
> In my case, I've some channels in the UHF range with a poor signal
> strength. Without the patch, I
> got ber ~3500h and unc >10h. With the patch, I get ber ~b00h and unc 0.



Sorry, 'carrier offset' should be 'initial demodulation frequency'.

- Hartmut
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