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AWR2944EVM: some problems for time domain plot of post-processing

li liang
Prodigy 50 points
Part Number: AWR2944EVM

Tool/software:

Hi，No matter using testsource or collecting data directly, there is some problem with the time domain plot of post-processing.What's the cause of this?

It is ADC's error ?

Thank you for you attention!

The relevant results are shown below.

  • 0
    TI__Mastermind 20605 points

    Hi Li,

    Thank you for your patience. It appears there is some data corruption based on the plots you have shared which could have possibly occurred due to:

    1. Interference from an external source
      1. Would it be possible to perform some interference detection and mitigation before processing the data?
    2. Data transmit error
      1. Would it be possible to inspect the data by reducing the:
        1. Sampling rate
        2. Idle time (Chirp periodicity)
        3. Frame time
      2. For N number of chirps, at what rate does this anomaly occur? (Approximately, how many chirps of the N chirps would be affected by this TD spike)
    3. Faulty device
      1. Would it be possible to run the experiment with a different EVM but with the same configuration?
    4. Unknown cause:
      1. Based on the debug results from above, we can maybe hypothesize other possible causes.

    Regards,

    Kaushik