To calibrate the USRP, follow the steps provided below. In the “USRP” tab:

• Check the “Conducted Connection” box;
  
• Define the corresponding values in the “USRP Cal Facrotor, db” and “Attenuator, db” fields, set “Cable Length” to 0, and then select the required “Spoofing Mode.”
  
• Spoofing Mode to Asynchronous
  

• Connect RF out of USRP to spectrum analyzer or RF power meter. If the spectrum analyzer is set to CF to 1575.42 MHz and bandwith to 10 MHz and switch on power measurement.
• Set “DUT input power, dBm” to “-20 dBm”
• Click on the “Scenario Start” button.

• Measure RMS Power of the generated signal;
• Calculate: USRP Cal Factor, dB = Dut Input Power, dBm - Power in Band, dBm.