Hey all, I am using USRP with two XCVR2450 Trancievers(working at 2.4-2.5GHz and 4.9-5.0GHz). I generated a carrier at 2.45GHz from the USRP using : *$ python usrp_siggen.py -TA -f2.45e9* But when i see the generated signal in a spectrum analyzer, i see that it is shifted by 12.5KHz from the center frequency( i see the carrier at 2.45GHz minus 12.5KHz). I try for other carrier frequencies but the shift remain almost the same.
Also, I generated a carrierl of 2.45GHz from a signal generator , received it in the usrp and I observed the spectrum. Again I see that the signal that is demodulated by the USRP and received in the computer through the USB is not a baseband signal as expected. Rather it is a carrier of about 12.5KHz. This means their is a fequency shift of about 12.5KHz both in transmission and in reception.When I use a carrier of frequency 4.9-5.0GHz, the frequency shift almost doubles to 25KHz. Does anyone experienced such a problem before? So, What can i do to correct this frequency shift? -Thanks Bruhtesfa
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