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Questions about ADRV9029 DPD status

Category: Software
Product Number: ADRV9029
Software Version: GUI Version:6.4.0.17

Hi ADI Team,

I have a question for you about the status of DPD.

When executing a DPD job, the error code is displayed as STABILITY ERROR, but the value of ACP With DPD meets our company's requirements. Is this reasonable? And if it runs on the system, will it cause other problems?

DPD Status

ACP with DPD

Thank you.

  • If the DPD is functioning normally, there should not be any error code.

    Are you using CFR? I hope your PA is capable of handling the peak power with out CFR. If not, please use CFR and make sure that the peak power is not going beyond the PA Peak power specification. Please enable CFR and see if you go out of this error.

    DPD is updating only once as you got stability error.

    Can you increase the ORX attenuation by about 4dB and check for the DPD performance?

    Which PA are you using and which Model are you testing with?

    Also, please share DPD tracking configuration that you are using.

  • The waveform used is CFR compressed.
    ORx attenuation increases by 4dB, and the measured DPD performance is as follows:

      

    ORx attenuation is reduced by 4dB, and the measured DPD performance is as follows:

      
    DPD Tracking Congig shares the following:

  • I could not see the snippet images. Please share again.

    What is the observation, is it improved, degraded?

  • I will re-add pictures.

    ORx attenuation increases by 4dB, and the measured DPD performance is as follows:

       

    ORx attenuation is reduced by 4dB, and the measured DPD performance is as follows:

      
    DPD Tracking Congig shares the following:

  • Do you get the stability error if you back off by 1 or 2 dB from target output power of the PA?

    Which PA and model file are you using?

    Can you increasing direct Reg.value to 25 and also try Peak search window size of 491520?

    And also, try with Indirect learning?