• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 210 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.

AWR1642: Check the output level by SPI etc...

Masa_0301
Intellectual 350 points
Part Number: AWR1642

Hi All

Customer is looking for a method to adjust the output power level when shipping from the customer

So I have a some question for 'Adjust the output power level'.

①Dose AWR have a function read the output power from the SPI or something?

② Do you have any function to adjust the output besides the back-off?

Best regards,

Masa0301

  • 0
    TI__Guru*** 149044 points

    Hi

    Transmit power can be adjusted using Tx backoff

    Rx gain and Rx target gain can also be adjusted.

    After the ADC samples are received, the power can be scaled down in software.

    I hope this answers you question

    thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 350 points

    Cesar-san

    Thank you for the reply

    My understanding is below is it correct?

    ①Customer can check the output power through software

        What kind of software can check this? 

    ②There is no way other than back-off function

    Best regards,

  • 0 in reply to Masa_0301
    TI__Guru*** 149044 points

    Hi,

    Software computes power of signal as the sum of absolute squares. This is basic signal processing formula.

    thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 350 points

    Cesar

    Thanks.

    I found the two mode by data sheet

    Monitoring is done by the TI's code running on BIST R4F.
    There are two modes in which it could be configured to report the detected output power via API by customer application.
    • Report the power detected after every N frames
    • Report the condition once the output power degrades by more than configured threshold from the configured.
    It is completely up to customer SW to decide on the appropriate action based on the message from BIST R4F

    And I understand that Rx gain and Rx target gain can also be adjusted.

    Best regards,