[linux-dvb] Re: How to determine the frequency of a channel

[Carsten Koch <Carsten.Koch@icem.de>]

Holger Waechtler wrote:
...
> best SNR and lowest Bit Error Rate are indicators for a good working
> point. Another approach would be to scan the whole range, then take the
> center point of the working interval.

That sounds like a good idea to me.
I suppose it is fair to assume that the best point is in the 
middle of the interval that shows full signal strength.


> No, when the AGC circuit works in saturation the driver can't do much
> more than read out these saturated values. Try to use a signal
> attentuator between cable plug and DVB card input to get your signal in
> a lower range.

For experiments, this may be a good idea.
For productive use, it is of course not, as an attenuator will
also harm the weaker channels, of which you want every little
bit of signal strength you can get.


Carsten.


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