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Re: [Discuss-gnuradio] 'Counts' in WX Scope Plot

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] 'Counts' in WX Scope Plot
Date: Wed, 09 Jul 2014 12:04:04 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

Hi Joseph (hope that's the right name, if not, please correct me ;) ),

well, GNU Radio is software defined radio; the data it processes are
simply numbers, so its unit is 1.
If your signal comes from an ADC, then it *might be* proportional to
Volts at the receiver; however, you usually do a lot of processing after
receiving, so using Volts as a unit is kind of wrong, because none of
the components consider these numbers to represent a voltage. If you
happen to square your signal, the display would be proportional to
power, instead, so there's no way to tell you "the scope sink displays
physical entity <insert>"; it all depends on what you let it display.

I hope that helped a little,

Marcus Müller

On 09.07.2014 11:09, jsam45 wrote:
> The vertical axis in Scope Plot is labelled as Counts. What does it mean? How
> is it related to the physical parameters of the signal like amplitude/power?
> --
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> Sent from the GnuRadio mailing list archive at Nabble.com.
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