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IWR1443: Invalid ADC samples within a chirp

Part Number: IWR1443


We setup the IWR 1443 with the configurations shown in figure 1 and 2 and there’s no error message. An object is placed at around 1.2 meter away from the radar. After collecting the data, we spotted something weird in the output of the post-processing utility script. Specifically, the ADC data shows many zeros, as shown in the bottom right corner of figure 3. We suspect that there might be something wrong with the hardware. Please help.

figure1: 

figure 2:

figure 3: