Re: [Discuss-gnuradio] reg:- sampling rate in GRC

[Kyeong Su Shin]

Hello Rensi Sam:

If you set the sampling rate of your hardware source/sink block to
samp_rate, then it will generate or consume samples at that sampling rate.
Ex: if the sampling rate of your Osmocom source block is set to 1e6, that
block will generate 1e6 points per every second. In this case, the
capability of the radio device restricts the choice of the sampling rates
(Ex: USRP N2x0s can only take sampling rate of 100e6 / N (integer), where
4<= N <= 512).

Same thing will happen when you use a throttle block - a throttle block
with sampling rate = n will force your flowgraph to generate only n points
per each second. This is used to control the processing speed of GNU Radio
when you are not attaching a hardware. (you should not use the throttle
block when you are using hardware transmitters/receivers, as this will
cause a two-clock problem).

Other than that, the sampling rate variable is just there for conveniences
in calculations (so as you can think in Hz, not in -pi to pi).

Regards,
Kyeong Su Shin

On Mon, Nov 13, 2017 at 1:07 AM, Rensi Mathew  wrote:

> Hi
>
> I have a doubt regarding the sampling rate used in GNU radio.
>
> Is there any limit for the sampling rate (minimum/maximum) other than the
> Nyquist Criteria which should be used in GNU radio companion?
>
> Is there any difference  to the sampling rate (or limit to it) when we
> connect a hardware ?
>
> Thanking you all
>
> Rensi Sam, India
>
> ___
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
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>
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[Discuss-gnuradio] reg:- sampling rate in GRC

[Rensi Mathew]

Hi
I have a doubt regarding the sampling rate used in GNU radio.
Is there any limit for the sampling rate (minimum/maximum) other than the 
Nyquist Criteria which should be used in GNU radio companion?
Is there any difference  to the sampling rate (or limit to it) when we connect 
a hardware ?
Thanking you all
Rensi Sam, India___
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