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DCA1000EVM: DCA1000EVM

Ravi Swami
Intellectual 335 points
Part Number: DCA1000EVM

A related question ( not sure if it has been answered earlier)  on the RAW data format and multiple files . 

Dear Support Group : 

Appreciate clarifications on  Raw Data Format  captured  with DCA1000EVM from 6843 

* Figure 18 / Section 9.2 of  swra518b  doesn't seem to mention the data structure for Multiple Transmitters.  

Could you elaborate with reference to Figure 18 - if we enable 3 transmitters in 6843 ? 

Or , in the absence of mentioning # of Transmitters, does it mean the aggregation for Ntx and MRx  already happened ? 

( Earlier a similar question has been raised, but I'm unable to figure out the discussed answer) 

* Is there a setting one could use to  reduce the file size to 512MB/ file , as against the current 1GB/file ?  -- will take care of missing data afor the frames due to this fracturing offline, during the stitching. 

thanks 

...ravi

  • 0
    TI__Expert 4025 points

    Hi Ravi,

    Please reference section 23 of the mmWave Studio user guide for more information on raw data capture and section 3 for information about the file size.  Unless you take smaller captures, there is not a way to change the file size minimum.

    -Chloe

    mmwave_studio_user_guide.pdf

  • 0 in reply to Chloe Shay71
    Intellectual 335 points
    Hi Chloe

    Thanks for a quick response .

    Appreciate answering my question with reference to DCA1000EVM as queried above.
    By the way I have looked at "mmwave_studio_user_guide.pdf" - section 23 too.

    * Section 23.6/7/8 has a table for Rx data with Rx0/1/2/3 .
    The information I'm seeking for is how does it change if I have multiple transmitters ( =3) and 4 Receivers.
    I assume there are 4 Rx data for Transmitter 1 , 4 more for Transmitter 2 , ...... etc .
    How are the receiver data framed in this case ?

    thanks
    ...ravi
  • 0 in reply to Ravi Swami
    TI__Expert 4025 points
    Hi Ravi,

    The bin file format doesn't change depending on the number of transmitters you have on during any individual chirp.

    The number of chirps and number of receivers will affect the .bin file size, since data is collected for every chirp and the data for every receiver is collected separately.

    So, if you have 3 transmitters and 4 receivers enabled in a single chirp profile, the data will still be in the format as shown in table 23.8 for one chirp. If the number of chirp profiles collected and all other configurations stay the same, the data stay the same size/ format regardless of the number of transmitters you have enabled. However, enabling 4 receivers instead of 2 will double the data size of a chirp by adding two rows to the .bin file per chirp.

    If you want to be able to distinguish the data from each of the transmitters, I suggest enabling a single Tx per chirp profile.

    Let me know if you have further questions.

    -Chloe