I have a question regarding REF_CLK on the AD-FMCOMMS2-EBZ.
If I connect a REF_CLK. Do I need to remove the 40MHz Crystal from the PCB? or the REF_CLK will overide the Crystal and I can keep the CRYSTAL as is on the PCB?
What else do I need to do to start using the REF_CLK? I guess program some registers in the AD9361?