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From: Simon Farnsworth <simon.farnsworth@onelan.com>
To: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: "Devin Heitmueller" <dheitmueller@kernellabs.com>,
	"Frank Schäfer" <fschaefer.oss@googlemail.com>,
	"Linux Media Mailing List" <linux-media@vger.kernel.org>
Subject: Re: [PATCH RFCv9 1/4] dvb: Add DVBv5 stats properties for Quality of Service
Date: Thu, 10 Jan 2013 10:19:34 +0000	[thread overview]
Message-ID: <19692716.qk9lES9tlU@f17simon> (raw)
In-Reply-To: <20130109132425.659243af@redhat.com>

On Wednesday 9 January 2013 13:24:25 Mauro Carvalho Chehab wrote:
<snip>
> Yes, it makes sense to document that the signal strength should be reported
> on either dBm or dBµW, if the scale is FE_SCALE_DECIBEL. I prefer to specify
> it in terms of Watt (or a submultiple) than in terms of voltage/impedance, as
> different Countries use different impedances on DTV cabling (typically,
> 50Ω or 75Ω).
> 
> So, either dBm or dBµW works for me. As you said, applications can convert
> between those mesures as they wish, by simply adding some constant when
> displaying the power measure.
> 
> As the wifi subsytem use dBm, I vote for using dBm for the signal measure
> at the subsystem (actually, 0.1 dBm).
> 
0.1 dBm suits me. I just want something that I can present to the end user in
a format that will match their aerial installer's kit.
-- 
Simon Farnsworth
Software Engineer
ONELAN Ltd
http://www.onelan.com

  reply	other threads:[~2013-01-10 10:19 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-08  0:25 [PATCH RFCv9 0/4] DVB QoS statistics API Mauro Carvalho Chehab
2013-01-08  0:25 ` [PATCH RFCv9 1/4] dvb: Add DVBv5 stats properties for Quality of Service Mauro Carvalho Chehab
2013-01-08 11:45   ` Simon Farnsworth
2013-01-08 18:00     ` Frank Schäfer
2013-01-08 23:18       ` Simon Farnsworth
2013-01-08 23:28         ` Devin Heitmueller
2013-01-09 11:02           ` Simon Farnsworth
2013-01-09 15:24             ` Mauro Carvalho Chehab
2013-01-10 10:19               ` Simon Farnsworth [this message]
2013-01-13 13:30             ` [linux-media] " Klaus Schmidinger
2013-01-08 12:33   ` Mauro Carvalho Chehab
2013-01-08  0:25 ` [PATCH RFCv9 2/4] dvb: the core logic to handle the DVBv5 QoS properties Mauro Carvalho Chehab
2013-01-08  0:25 ` [PATCH RFCv9 3/4] mb86a20s: provide signal strength via DVBv5 stats API Mauro Carvalho Chehab
2013-01-08  0:25 ` [PATCH RFCv9 4/4] mb86a20s: add BER measure Mauro Carvalho Chehab
2013-01-08  0:37   ` [PATCH RFCv9] " Mauro Carvalho Chehab

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