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CC2340R5-Q1: CE certification in CC2340R5Q1 &CC2745

QL
Prodigy 130 points
Part Number: CC2340R5-Q1

Tool/software:

Hi Ti

    Recently we are doing pre-test cetification for our two kinds of boards, one of boards is using CC2340R5Q1, the other is CC2745.

    We are meeting some problem when we are doing CE test in the test item named Power Spectral Density, whose limit is 10 dBm/MHz. And request in CE test for Power Spectral Density is below. The result need add Antenna Gain.

    Now the max Power of  CC2340R5Q1 is 8dBm, and CC2745 is 12dBm now(but later it will can support 20 dBm).  CC2340R5Q1 can be margin to the limit of Power Spectral Density in CE test but it is still dangerous. But Power Spectral Density of CC2745 is more than 10dBm/Mhz, and it does not add Antenna Gain that follow CE request.  It makes us difficult to pass the CE certifiacation.

    So we wanna ask did CC2340R5Q1 & CC2745 have finish CE&ARIB&FCC certification? And how can we do for Power Spectral Density in CE test?

Our surrounding：using Smart RF studio 8 to control our Boards by XDS. 

version of Smart RF studio 8: v1.1.0

SDK of CC2340：simplelink_lowpower_f3_sdk_8_10_01_02__win

SDK of CC2745：simplelink_lowpower_f3_sdk_8_10_00_46_eng

Thanks

Best regards,

Annie

  • 0
    TI__Intellectual 1320 points

    Annie,

    In order to meet the CE Power Spectral Density requirements, you will either need to adjust the PA output power setting lower to stay below the 10dBm/MHz spec or select an antenna with lower gain to meet this spec. Our 20dBm devices will not meet the CE certification specs without reducing the power output to a lower setting that achieves the 10dBm/MHz power level.

    Regards,

    Andrew 

  • 0 in reply to Andrew Lugo
    Prodigy 130 points

    Hello Andrew,

             Infact, To pass CE cetification, we may decrease the power of CC2745 to about 7dBm and our Antenna Gain need to be controlled within 3.5dBi.

             What about the way to decrease the power of the 2M PHY Band Edge in 2402MHz? We also find it dificult to pass the cetification, only to decrease the output Power? Do you have any other way to control it? The Japan certification request limit: -16dBm/ MHz, but the result of our DUT(output Power=11dBm) is about -11dBm, Fail.

    it will be like the below pictrue：

    Best Regards,

    Annie

  • 0 in reply to QL
    TI__Intellectual 1320 points

    Annie,

    Since you mentioned the 2M Phy I'm assuming this is a BLE application. In that case, per the BLE specification, the advertisement channels (Channels 37, 38, and 39) should only operate with the 1M PHY. Using the 1M PHY for channel 37 (2402MHz) should allow you to meet the band edge limit you're trying to meet. 

    Regards,

    Andrew