A sampling rate of 2M is supporting a sine generation of 2.5G

Hi all,

Im trying to transmit a sine wave from RFX2400 usrp, and im successful
in transmitting it. The only thing which bothers me is that im making
a sine wave from gr.vector_source_c in usrp_siggen.py with a sampling
frequency of 2M = dac rate/interp rate. So, how is this sampling done
or sine is sampled at some other frequency…