Hi, I've 2x USRP B210 with board mounted GPSDO (TCXO). I'm controlling the USRP's with MATLAB and configured the other to send CW at 3.75GHz and other to receive with the same frequency. The radios are connected with 50cm SMA cable and 30 dB attenuator.
I know there should be some frequency offset, however the received signal is around 1.7 kHz off and I think that is too much. The GPSDO should provide accuracy of 75 ppb in unlocked condition so I'm expecting to see frequency offset maximum a few hundred Hz. Therefore, I'm asking is this normal or am I missing something? Br, Teemu USRP Configuration * Tx&Rx InterpolationFactor=512 * Tx&Rx MasterClockRate=5120000 * Tx Gain=55 & Rx Gain=64 [cid:image002.png@01D3F1DA.F06C4BB0]
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