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TMS320F2800137: DSP will generate radiation interference?

Shaoxing Ke
Expert 3590 points

Part Number: TMS320F2800137

Hi Experts,

I am asking for my customer here.

The customer found that when Power Up the F2800137, it will generate 600M radiated interference as below figure (blue circle).  These large radiated interference signal affects the normal work of the WIFI module.

DSP will generate radiation interference ? Do we have this spec about F2800137? Any suggestion/Dir here to decrease this radiated interference? Thanks a lot~

  • 0
    TI__Intellectual 2180 points

    Hi,

    Our subject matter expert is currently out of office. Please expect a response by next Wednesday. Thank you for your patience.

    Thanks and Regards 

    Srikanth

  • 0
    TI__Mastermind 42195 points

    Shaoxing,

    The first step is to determine what is actually emitting the noise. I recognize that this could occur during the power on sequence, but perhaps there is a weird response from a DC-DC switching supply.

    Sniffer-probes will likely help determine where the noise is emanating from. I am not aware of any 600MHz noise emitted from the device during power up.

    Is there any code running on the MCU? if so,  can you clear it and see if the behaviour continues?

    Regards,
    Cody