Mohamed, If you operate the DAC internal PLL at 9GHz, you can use a divide by 3 to generate a 3GHz for the CLKTX output. What DAC clock input frequency are you sending from the LMK? What LMF settings do you plan on using with the DAC? What is your interpolation factor? Are you using IQ data or real? How many DUC's per DAC? All of this will come in to play when determining if you can do this or not based on your available DAC clock frequency from the LMK. Regards, Jim
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