[linux-dvb] Re: B2C2/Technisat Cable/Air/SkyStar USB

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Sunday 31 Oct 2004 10:55, Patrick Boettcher wrote:
> On Sun, 31 Oct 2004, Holger Waechtler wrote:
> > >Thanks to Holgers pointer to datasheet one can suppose what's inside.
> > >The inscription of the tin box says:
> > >TBM - Product
> > >U   - Universal
> > >24  - chassis size
> > >1   - 1 input
> > >1   - bandtype 1 BAND
> > >2   - mech-type: horizontal
> > >I   - I2C
> > >M   - Mitel/Zarlink
> > >B   - Demod IC: ST (what does this mean)
> >
> > Sounds to me like the common STV0299B/SL1935 or the older STV0299/SL1925
> > combination -- but that's pure guessing. Both should work with the
> > existing stv0299 driver, maybe some tweaks are necessairy due to
> > different crystal frequencies, different filters or different wirings.
>
> OK, reverse engineering will show this hopefully.
>
> > Have you found out how the LNB supply is connected? There are basically
> > 2 obvious options: either the STV0299 OP0/OP1 pins or pins of the
> > FlexCop. Maybe there even exists some code you can reuse.
>
> No, I don't have the device here, yet, the pictures are the only thing I
> have currently.
>
> How do figure it out LNB supply pins? Following the lines on the board
> from the connector to a IC?

Best way to do it that way is to get a multimeter which beeps when it detects 
there is no (or little) resistance between two points on a circuit.