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, m” to 0, and then select the required “Spoofing Mode;”

• Connect RF port of the USRP to the spectrum analyzer or RF power meter. When using the spectrum analyzer, we recommend set CF to 1575.42 MHz, bandwidth to 10 MHz, and switching on the power measurement mode;
• Set “DUT input power, dBm” to “-20 dBm” respectively;
• Click on the “Start Scenario” button to finish;

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