Re: [Discuss-gnuradio] UHD: USRP Source

[Martin Braun]

It sets the output sampling rate of the USRP, and hence the usable
bandwidth. Internally, it sets the DDC chain's decimation, so if you
request 1 Msps, it will decimate from 100 MHz sampling rate by a factor
of 100.

The rate at which the IF is sampled from the TVRX2 is, as you point out,
fixed to 100 MHz on the N200.

M

On 15.09.2015 09:11, Gerome Jan L wrote:
> Hi guys,
> 
> What does the sampling rate in this usrp block does?i'm talking about
> the uhd:usrp source block. Is this the one that samples the IF from my
> TVRX2 daughterboard? Or is this the bandwidth that is displayed on the
> QT Sink? Or is this the bandwidth that needs to be sample. As far as I
> know, sampling rate is fixed at 100 MSps by the ADC. 
> I'm asking this because whenver I set it to say 400 kHz in sampling
> rate, it give me a bandwidth of 400 kHz. If I increase does, it
> increases the bandwidth too. If this sets the sampling rate in the usrp,
> it should only make the plot nicier, not increase its bandwidth. If I am
> not mistaken.
> Thanks in advance.
> 
> 
> -- 
> 
> Best,
> 
> *Gerome Jan M. Llames *
> Aspiring Technopreneur | Tech Savvy | Curious
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