Re: [linux-dvb] TDA10086 fails? DiSEqC bad? TT S-1401 Horizontal transponder fails

From: Hartmut Hackmann <hartmut.hackmann@t-online.de>
To: ldvb@ns.bog.msu.ru
Cc: linux-dvb@linuxtv.org
Subject: Re: [linux-dvb] TDA10086 fails? DiSEqC bad? TT S-1401 Horizontal transponder fails
Date: Thu, 20 Mar 2008 21:55:37 +0100	[thread overview]
Message-ID: <47E2CF49.8070302@t-online.de> (raw)
In-Reply-To: <Pine.LNX.4.62.0803201931260.12540@ns.bog.msu.ru>

Hi,

ldvb@ns.bog.msu.ru schrieb:
> On Thu, 20 Mar 2008, Oliver Endriss wrote:
> 
>> Sorry, if you want to have your problem fixed, you have dig through the
>> register programming of the frontend driver. Use an i2c sniffer and
>> compare the register settings of the the windows driver with those of
>> the linux driver...
>> If you want to experiment with some parameters, you might have a look at
>> changeset
>>  http://linuxtv.org/hg/v4l-dvb/rev/8a19aa788239
>> Maybe you can find a better register setting which fixes your problem.
> 
> Increased baseband cut-off helps! (tda826*.c)
> so, making it
> buf[6] = 0xfe;
> solves the problem.
> Maybe, I'll check other values.
> 
This might be right! I could not get good information regarding the
transponder bandwidths. We might need to make this depend on the
symbol rate or a module parameter.
Can we grind this out after easter?

Best regards
  Hartmut

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