From: Steven Toth <stoth@linuxtv.org>
To: Antti Palosaari <crope@iki.fi>
Cc: linux-dvb <linux-dvb@linuxtv.org>
Subject: Re: [linux-dvb] A/V sync issues with DVB-S
Date: Wed, 20 Aug 2008 10:07:35 -0400 [thread overview]
Message-ID: <48AC2527.1090209@linuxtv.org> (raw)
In-Reply-To: <48AC1087.2010503@iki.fi>
Antti Palosaari wrote:
> Thomas Börkel wrote:
>> hermann pitton wrote:
>> Measuring the strength and SNR is not so easy now. My SAT receiver
>> always says strength 70% and SNR 80%. My new Nova S Plus cards always
>> report strength 97% and SNR 99%. Only my TT 1500s reported reasonable
>> numbers like strength 63-80% and SNR 75-90%.
>
> What is the recommended way to report signal strength or SNR by the
> driver? Both of those are 16bit unsigned value. Is it better to scale
> 0-0xffff or return as decibels? If SNR is reported as decibels it will
> look like very small value...
>
> Antti
May of the drivers I've added recently report their values in db, but I
typically also have one precision point. So I report 20.4 as 204 decimal.
- Steve
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next prev parent reply other threads:[~2008-08-20 14:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-18 5:13 [linux-dvb] A/V sync issues with DVB-S Thomas Börkel
2008-08-19 2:31 ` hermann pitton
2008-08-20 4:52 ` Thomas Börkel
2008-08-20 12:39 ` Antti Palosaari
2008-08-20 14:07 ` Steven Toth [this message]
2008-08-20 23:40 ` hermann pitton
2008-08-21 9:59 ` Simon Kenyon
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