THMA11: Absolute and Relative Power Measurements in dBm and dBFS on the USRP Radio

Presentation Abstract
The USRP SDR radios from National Instruments (NI) are not calibrated devices, and as such, they operate using relative power levels in dBFS. However, it is possible to manually calibrate the USRP and obtain absolute power levels in dBm. By enabling absolute power measurements in dBm, results can more easily be compared, interpreted, and leveraged for signal analysis and device testing. We will present the manual calibration process in detail and explain how to achieve precise and reliable signal measurements in dBm using USRP devices and associated software tools.