DA14580 Output Power Waveform Noise

HI Support,

我是currently using Experts Development Kit and had tried testing its output power using the default firmware to measure the maximum peak and average power emitted based on TRM-LE/CA/01C setup. Had tested the 3 daughter boards that came along with the Expert Devt Kit and had found out good responses for 2 out of 3 daughter boards tested with a smooth output power waveform . However, 1 out of 3 is showing two overlapping waveforms with the overlap starting at the center (50% point) of the original waveform. This scenario displays an intermittent output power on the Spectrum Analyzer. I would like to show some screenshots for your reference, is there a way for attaching these photos?

I am also seeing the same on some of our produced PCBs. Appreciate your feedback on this.
Thanks.