• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 51 subscribers
  • Views 321 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC2564MODA: Certification test fails with BLE output power

Koichiro Tashiro
Mastermind 22945 points

Part Number: CC2564MODA

Hi,

My customer is trying to get Japanese radio certification (MIC) with CC2564MODA.
But one test fails with BLE TX antenna power.

The results are below (2402MHz is failing):


The script used for the test is attached.

Fullscreen 60_BLE_HopOff_Lch(2402MHz).txt Download 
Send_HCI_BLE_Transmitter_Test 0x00, 37, 0
Wait_HCI_Command_Complete_BLE_Transmitter_Test_Event 5000, any, HCI_BLE_Transmitter_Test, 0x00


Power vector is default, so power level1(=12dBm) is used for BLE.
http://processors.wiki.ti.com/index.php/CC256x_VS_HCI_Commands#HCI_VS_DRPb_Set_Power_Vector_.280xFD82.29

Questions:
1) Is the test result reasonable based on the default BLE power (12dBm)?
Customer wants to make sure there is no measurement error or etc.

2) If the answer to #1 is yes, customer needs to adjust BLE power (use lower power), correct?
I think there are two ways to change BLE power.
One is using HCI_VS_DRPb_Set_Power_Vector (0xFD82) and change power level 1 value.
Another is using HCI_VS_LE_Output_Power (0xFDDD) and change BLE power level to other level (ex. 14)
Which one is TI recommendation?

Thanks and regards,
Koichiro Tashiro

  • 0
    TI__Genius 13710 points

    Hi Koichiro,

    Yes the data show above is reasonable. Since you are using the MODA, the antenna gain is higher and thus you need to reduce the output power. Since BLE is based on one power only use the HCI_VS_DRPb_Set_Power_Vector (0xFD82) and change power level 1 value.

    Thanks,

    Riz