On 23/05/2015 22:53, Alessandro Gorobey wrote: > Hi All, Hi Sandro, > I obtain all files needed and also a fcal.plt usable with gnuplot. > fcal.out contain: > 0.0383 > -2.0686 > The values depend on radio hardware project and precision of calibration. > "A" value near to zero is realistic. > The "B" value is the ppm error and in my case is negative, 2 Hz every MHz. I believe that with a radio design using a DDS synthesiser and a single reference oscillator there should be no intercept error component assuming the radio firmware has no defects. The only "static" error contribution will be from reference oscillator calibration and that only contributes a potential slope error.
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