Hi. We are invested in a project which requires a power calibration of a b210. Namely, we need to translate complex arbitrary units in the uhd gr module to absolute power, for a given set of parameters, i.e. gain, sampling rate, etc. >From the AD9361 DS, I understand the chip has an internal RSSI calibration. However, I'm clueless whether one would obtain absolute power values from the uhd baseband signal, derived from any chip factory calibration. Alternatively, we are thinking of a calibration procedure, by running the B210 and some of the following equipment (through GPIB) from a python script: https://www.rohde-schwarz.com/en/product/smr-productstartpage_63493-7569.html https://www.rohde-schwarz.com/en/product/fsmr-productstartpage_63493-8032.html Thus, we end up with some matrix to derive absolute power values, using the equipment readings as a reference. Has somebody tried this? Is there some specific trick we need to know? Am I missing something? thank you. regards, Claro.

Hello Claro, I think you should take the "proper" calibration route. I did that once for a N210/WBX, by using a R&S vector signal generator, a VNC server running on its Windows OS, and python on the laptop. Best regards, Marcus On 28.07.2015 17:11, Claro Noda via USRP-users wrote: > Hi. > > We are invested in a project which requires a power calibration of a b210. > Namely, we need to translate complex arbitrary units in the uhd gr module > to absolute power, for a given set of parameters, i.e. gain, sampling rate, etc. > > From the AD9361 DS, I understand the chip has an internal RSSI calibration. > However, I'm clueless whether one would obtain absolute power values from > the uhd baseband signal, derived from any chip factory calibration. > > Alternatively, we are thinking of a calibration procedure, by running > the B210 and > some of the following equipment (through GPIB) from a python script: > > https://www.rohde-schwarz.com/en/product/smr-productstartpage_63493-7569.html > > https://www.rohde-schwarz.com/en/product/fsmr-productstartpage_63493-8032.html > > Thus, we end up with some matrix to derive absolute power values, using the > equipment readings as a reference. > > Has somebody tried this? Is there some specific trick we need to know? > Am I missing something? > > thank you. > > regards, > Claro. > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com