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

From: Vanush Vaswani
Subject: Re: [Discuss-gnuradio] 'Counts' in WX Scope Plot
Date: Thu, 10 Jul 2014 13:33:59 +1000

I think 'Magnitude' is better than counts, which is just confusing.

On Wed, Jul 9, 2014 at 7:19 PM, Sylvain Munaut <address@hidden> wrote:
> On Wed, Jul 9, 2014 at 11:09 AM, jsam45 <address@hidden> 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?
> It's dependent on your hardware.
> Basically 'count' is just the raw value and what that value means is
> whatever the source block returned. It can be normalized between -1.0
> and 1.0 or represent the raw adc value, and then what voltage the
> represents depends on the ADC reference used in your hw. What power it
> represent at the input depends on the total gain in the rx chain from
> input to ADC ...
> All of that is out-of-scope for GR, you have to calibrate it out if
> you want absolute/known units.
> Cheers,
>    Sylvain
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