Re: [Discuss-gnuradio] Sample rate for source_noise and source_vector

[Eric Blossom]

On Thu, Oct 26, 2006 at 05:33:26PM +0200, De Lima Julian wrote:
> Hello,
> 
> When you specify a signal_source, you have to set up the sample rate.

This is just for convenience and allows you to specify the output
frequency in absolute instead of normalized terms.  If you prefer, you
can of course set the sample_rate to 1.

> But with the noise and vector sources you do not have to specify this
> parameter. 
> 
> What is the sample rate in the computer -> USB when we generate a noise
> or generate data from a list/file?

The sample rate across the USB is determined by the interpolation or
decimation rate programmed into the usrp.

On receive, USB sample rate = 64e6 / decimation_rate
On transmit, USB sample rate = 128e6 / interpolation_rate

Eric