[USRP-users] USRP source channel bandwidth setting with GRC

mleech at ripnet.com mleech at ripnet.com
Thu Apr 2 10:47:27 EDT 2015


The CBX/WBX/SBX family have fixed baseband analog filters, that
guarantee Nyquist criterion is satisfied on all platforms they are used

In most cases, this is more than adequate, when combined with the
extremely-good digital filtering that happens after the analog baseband
 is sampled by the ADC, and processed by the DSP logic in the FPGA. The
only time this wouldn't be true is if you have closely-spaced signals
within the ADC passband that exceed the dynamic range of the ADC. In
that case, RF filtering might actually be vastly better. 

On 2015-04-02 10:36, Trek via USRP-users wrote: 

> I am using the GRC USRP source, wonder how could I set the RF front end bandwidth on the USRP device. I have been trying ajusting the bandwidth parameter but it did not seem to have any effect. The device I have X310 WBX-120. 
> The following is from GRC documentation but it is not very clear to me. 
> Bandwidth: 
> To use the default bandwidth filter setting, this should be zero. Only certain subdevices have configurable bandwidth filters. See the daughterboard application notes for possible configurations. 
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