[USRP-users] Signal transmission on a USRP X310

Jerrid Plymale jerrid.plymale at canyon-us.com
Tue Jul 21 15:04:32 EDT 2020

Hello All,

So I have been running into some interesting issues lately with using a USRP X310 as a signal generator. I have a UBX 40 Duaghterboard installed in the USRP, and I have been testing sending signals at varying frequencies. I have noticed that I can set the center frequency of the USRP sink block up to about 1.3 GHz, and I can see the sine wave being transmitted and received just fine (1 MHz frequency and 4 MHz sampling rate sine wave), but setting the center frequency any higher causes a loss in data (the spectrogram of the signal looks pixelated and some of the pixels in the signal are much lower that others). I know that the X310 supports up to 6 GHz signals, and I know the PC I am running GNU Radio can handle generating the signal IQ data, so I am at a loss for ideas as to what could be causing the loss of signal data at frequencies greater than 1.3 GHz. Any suggestions or ideas on what I am doing wrong and what I need to change would be greatly appreciated.

Best Regards,

Jerrid Plymale
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