EV-RADAR-MMIC & EVAL-ADAR7251Z GUI setup

Hi,

I'm using EV-RADAR-MMIC connected with EVAL-ADAR7251Z, and I want to set up the ADI Radar GUI, but get an error, "PLL not locked".

My setup sequence is First, click on the ADAR7251 -> DATA INTERFACE and click PLL ramp sync, second, I set up the MMIC config ADF5904->ADF4159(main controls)->ADF5901->ADF4159(Ramp and shift  keying) turn the ramp on.

after all the setting done, I click the capture on the evaluation board, and get the error of "PLL not locked", like the figure I attached.

Need help on this.

Thankserror

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