[USRP-users] TX rate for USRP1

Josh Blum josh at ettus.com
Fri Feb 24 18:19:27 EST 2012



On 02/24/2012 03:02 PM, Alberto Trentadue wrote:
> Hello
> 
> 
> I have a doubt regarding the tx rate to set in UHD for USRP1.
> By using the method:
> 
> uhd::usrp::multi_usrp::set_tx_rate(double rate, size_t chan = ALL_CHANS)
> 
> then, if I set the rate to be 320KSPS, does the library automatically accounts for the correct interpolation value to configure the FPGA to match the final sampling rate 128MSPS ?


Correct

> Is there any particular criteria to choose the rate?
> 

You must pick a rate such that the interpolation factor is an integer.
interp*sample_rate = 64e6, where 64e6 is the master clock rate

-Josh




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