Re: [Discuss-gnuradio] Probe Rate block

Good to know!

Thank you all, and thank you to Gnu Radio ORG!

Evariste S.

On Tue, Aug 14, 2018 at 12:45 PM, Müller, Marcus (CEL) <mueller@kit.edu> wrote:

There's no relationship, unless you have *hardware* that you configure
to that sampling rate.

In a GNU Radio flowgraph without SDR hardware, every block just
calculates as fast as it can. The sampling rate only has a *numerical*
meaning to some blocks – for example, the signal source block uses the
desired signal frequency, divides it by the sampling rate, and then
knows how many samples a period of a sine wave has.
So, a flow graph that is only

signal source -> null sink

will produce **exactly** the same data when configured
samp_rate = 1e6, sine frequency = 100e3
and
samp_rate = 10, sine frequency = 0.1

Best regards,
Marcus

On Tue, 2018-08-14 at 10:27 -0600, eva some wrote:
> Awesome! That works.
>
> Additional thought: while the sampling rate is set to 100KHz, the
> probe rate displays for instance: rate_avg. 114355. How can we deduce
> a relationship between these two values? Assume that 2x2 MIMO and 8-
> PSK are used.
>
> Thank you!
>
> Regards,
>
> Evariste S.
>
> On Mon, Aug 13, 2018 at 7:55 PM, Kyeong Su Shin <ksshin@postech.ac.kr
> > wrote:
> > Hello Evariste,
> >
> > I usually hook it up to "print" port of a "Message Debug" block.
> > The results will be displayed on the console (a CUI way).
> >
> > Regards,
> > Kyeong Su Shin
> > 보낸 사람: eva some <tud53199@temple.edu> 대신 Discuss-gnuradio <discuss-
> > gnuradio-bounces+ksshin=postech.ac.kr@gnu.org>
> > 보낸 날짜: 2018년 8월 14일 화요일 오전 7:29:34
> > 받는 사람: discuss-gnuradio@gnu.org
> > 제목: [Discuss-gnuradio] Probe Rate block
> > 
> > Hi!
> > Can anybody advise me how to use the Probe Rate block in Gnuradio?
> > I am not new in Gnuradio, but this block is getting me around 360
> > degrees.
> >
> > I am trying to probe incoming signals by using Probe Rate. To
> > display its output, I used QT GUI Message Edit Box. Unfortunately
> > nothing displays from the probe.
> >
> > Any advise on how to display Probe Rate's content?
> >
> > I really appreciate your support.
> >
> > Thanks!
> >
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