On 08/06/2010 12:57 AM, intermilan wrote:
Thanks for the answer.
Is that mean if I set the center frequency at 2.5G(RFX2400),the DC is also at 2.5G?or other values?
Due to hardware limitations, the daughterboard may not always achieve
the desired center frequency, and will therefore leave you with a small
offset. The FPGA dsp can account for this additional offset by shifting
your signal to achieve sub-Hz resolution. In addition, you can shift
your signal again in the host
Sometimes, you intentionally force the daughterboard to have a large
offset to move the LO out of the band of interest.