[dvblast-devel] How to interpret signal strength, SNR and BER

[Thomas Kernen]

On 11/22/11 5:22 PM, Eduardo Vieira wrote:
> Hi fellows,
>
> I've been googling for some time but I still haven't got anything
> conclusive. So I decided to ask you for some help :)
> My goal is to develop an application that will monitor the status of a
> DVB tuner, so I need to read and interpret the values returned for
> signal strength, SNR and BER. The ideia is to show these values as
> dBm, dB and an exponential format for BER respectively.
> The question is: how can I convert the numbers returned by dvblast to
> these measurement units ?
>

May I suggest you also read this whole of this recent thread on 
linux-media mailer:
http://www.spinics.net/lists/linux-media/msg39454.html

And then search for the follow up ones. It should help you understand 
some of the issues.

Thomas