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Question asked by on Dec 20, 2013
Latest reply on Jan 20, 2014 by rejeesh



I'm working with adfmcomms1 board with kc705 carrier board.A signal of 5 MHZ  is generated through DDS and passed to DAC as in the reference design.The DAC sampling rate is set to 491500000. If i change the DAC sampling rate to 100000000, then if i see the DAC output in oscilloscope then i get a signal of 1 MHZ signal ,but i have transmitted 5 MHZ sine wave from DDS.


after that if i change the DAC sampling rate ,  the signal i see on the dac output  vary(increased frequency).I have attached image  of the signal (dac output) for varying  DAC sampling rate.Can any body help?


Thank you