I have the AD9910 PCBZ evaluation board which was working satisfactorily. This was not used for about a year. Now, as I wanted to use it, I observe that the output in the single tone mode appears Distorted (2) Arbitary Frequency modulated .
The output responds to the changes made in the Profile window. But as the waveform is heavily distorted & sort of frequency modulated i have been facing a problem. Iam attaching the snap shot of the Output taken as the Board is powered On and the RESET buton on the Software clicked.
My query is as follows:
What could be the reason for this behaviour?
What are the possible solutions?
Any other advice would be much appreciated.
Please note: All the 3 files are taken of the same signal but at different timescales as indicated.