I am using ad9910 evm to generate linear fmcw baseband signal e.g.0MHz TO 10MHz in DRG or RAM mode.
The setting is
continuous re-circulate or continuous bi-directional ramp in RAM mode;
ram data type: frequency;
The problem is
I find that the phase of the filtered out DDS signal is shift when I observe the waveform using the RAMOVER signal as trigerr.
How can i generate the LFMCW signal with steady initial phase in each pulse?
Is the problem still exist if i generat the LFMCW signal in DRG mode?