[linux-dvb] Re: Needs to get the SNR value in dB, with dvbtune

To: Samuel Torton <samuel@ncslab.com>
Subject: [linux-dvb] Re: Needs to get the SNR value in dB, with dvbtune
From: Johannes Stezenbach <js@convergence.de>
Date: Mon, 02 Jun 2003 14:49:26 +0200
Cc: linux-dvb@linuxtv.org
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Samuel Torton wrote:

I've just read on this mailing-list archives (Apr-2002) that the SNR
results should be divided by 1.000.000 (1E-6) in order to be read in dB
(?). One of my collegues did an experimentation between a field measurer
(MCP3000) and the SNR value on the card output... and I noticed that the
comparison between both results are <<<APPROXIMATIVELY>>> "1.000.000"...

An older version of the API (originally defined by Nokia for their OST project)
specified the SNR in units of 10e-6 dB. But we changed that because it was
impractical for us to implement.

Johannes



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References:
- [linux-dvb] Re: Needs to get the SNR value in dB, with dvbtune
  - From: "Samuel Torton" <samuel@ncslab.com>

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