[linux-dvb] Re: Skystar2 rev2.6B working... almost

["Augusto Cardoso" <augusto@carhil.net>]

Hi!

Please see below.


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On 10/9/2003 at 8:39 AM Niklas Peinecke wrote:

>Hi Augusto,
>
>>
>> For the Samsung tuner, the master clock should be 88MHz.
>
>Hmm, that is the default. Should be OK.
>btw. There seems to be a quartz called "KONY 03-23 45.0000 KCH089B3"
>soldered to the card. Is that the origin of the XTAL_CLK signal?
>
>> If you don't get Viterbi, you should check the Spectral Inversion.
>
>How do I do that? :) Maybe You could recomment some introductury text?
>

You can try the INVERSION_ON and then INVERSION_OFF setting. This can be done using scan or szap.
What software are you using to set the parameters?
I have implemented AUTO inversion for demodulators that don't support that. I'll post a patch as soon as I've done more testing. This should eliminate any issues with Spectral Inversion.

>> Note that the version of the Samsung NIM that B2C2 uses is custom made.
>The "normal" tuner is vertical mounted. The B2C2 version is horizontal
>mounted and there are couple of small changes related to the I2C.
>> Another important thing to note is that Samsung had two versions of the
>NIM. In one version(older) the VS (B4) had to be reset for > 1600000. In
>the current version, and the version that B2C2 uses, the VS bit is reset
>for > 1500000. I'm not sure what the LG NIM requires.
>
>Where is that VS? Do You mean register 0xb4 in the stv0299 (according to
>spec it has only 0x34 registers)?
>

It's the forth bit of the control data (Byte 5) of the SL1935. The byte number 5 should either be 0x18 or 0x08. Sorry about this, it wasn't very clear.

>Sorry for all those questions...
>

No problem, I hope this helps.

	Augusto



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