Robert Schlabbach wrote:
From: "Johannes Stezenbach" <[EMAIL PROTECTED]>
But AFAIK there are no DVB-T FE around which have inversion ON, so I changed it there from AUTO to OFF.
Don't cable and terrestrial tuners _always_ spectrally invert the signal, so that the demodulator must have spectral inversion enabled by default? The VES1820 on my Siemens-Cable card had to have spectral inversion enabled, and so does the TDA10045H on my TT-Budget DVB-T card.
no, e.g. the L64781 and the tda10021 report no inversion. Some revisions of the TT DVB-C card too. The reason for the inversion is probably that the hardware designer swapped the I/Q wires between tuner and demodulator.
a remark: some providers transmit with spectral inversion, maybe just because they swapped the I/Q plugs in their modulator or RF amplifier.
Holger
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