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CC3220MODA: Handheld FCC SAR Testing C2PC

Stuart Baker
Genius 10630 points
Part Number: CC3220MODA

I'm working with a customer who is using the pre-certified CC3220MODASF in their handheld application.  This is an application where the device is designed to be handheld, but not held against the head.  Like a remote control, not like a cell phone.  It is our understanding (please confirm) that the additional required SAR testing can be performed by the test house and then the test house can file a class 2 permissive change referencing the original testing performed on the CC3220MODASF.

It is our understanding that the integrated PA is supposed to be kept under a 35% transmit duty cycle during continuous testing to avoid it overheating and drifting out of spec.  We also understand that under normal operation CC3220 NWP will automatically [somehow] limit transmit duty cycle to keep the PA under its thermal limit.  I'm not sure how the PA limit algorithm works though, and it may have implications in SAR testing.

We are wondering how in the case of SAR testing duty cycle correction should be applied.  Do we need to correct up to 100%, or are we okay staying at the 30%-35% levels because this is a normal limit for normal operation?

Please advise.

Thanks,

Stuart

  • 0
    TI__Mastermind 46511 points

    Hey Stuart,

    In this particular case, the customer will not be using our IDs, so a C2PC is not required. Instead, they need to go here, use the second link and use this form to request the CC3220MODx's module certification. FYI - "Change in ID" is for FCC and "Change in Multiple Listing" is for Canada. With this data, the customer can do delta testing for SAR and acquire a new ID. 

    For SAR testing, they're just looking for the power out. The lab will know to measure the duty cycle and correct it themselves.

    BR,

    Seong

  • 0 in reply to Seong Kim
    TI__Genius 10630 points

    Seong,

    "For SAR testing, they're just looking for the power out. The lab will know to measure the duty cycle and correct it themselves."

    I think what you are stating is that the test lab will need to duty cycle correct up to 100% for our SAR testing.  Can you please confirm?

    Thanks,

    Stuart

  • 0 in reply to Stuart Baker
    TI__Mastermind 46511 points
    Stuart,

    I believe that is correct, but you should confirm with the test lab.

    BR,
    Seong