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MMWCAS-RF-EVM: control the capture time in MIMO mode onmmW cascade board

Jianyuan Yu
Expert 1100 points
Part Number: MMWCAS-RF-EVM

greetings,

is there any way to extend the capture time longer, the default way run `Cascade_Configure_MIMO.lua` and `Cascade_Caputure.lua` last less than 2 seconds, which is too short for our application. I have tried to edit several value in the lua value like increase the number of frames or loops but none of them work.

Thanks in advance.

Best.

Jet.

  • 0
    TI__Guru*** 140004 points

    Hi,

    Did you modify in Cascade_Capture.lua the following:

    num_frames_to_capture

    Thank you

    Cesar

  • 0 in reply to Cesar
    Expert 1100 points

    Hi Cesar, 

    I did improve the `num_frames_to_capture` of file `Cascade_Capture.lua` from 10 to 2000, and I do see more frames in the plot, but I don't see longer capture time. Is there a estimated relationship between number of frame and capture time? e.g. 10 frame for 2.0 seconds capture time while 100 for 20.0 seconds.

    Best.

    Jet.

  • 0 in reply to Jianyuan Yu
    TI__Mastermind 31680 points

    Hello Jet,

    Please edit the "Frame Configuration" as a part of Cascade_Configure_MIMO.lua script. It is this script that configures the AWR device. Cascade_capture.lua is just used for configuring the TDA appropriately and sending out the record commands.

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    Expert 1100 points

    Hi Ishita,

    Thanks.

    I believe I edit both    `nframes_master` `nframes_slave` in `Cascade_Configuration_MIMO.lua` , and   `num_frames_to_capture` in `Cacade_Caputure.lua`. But I did not see longer capture time.  Is there anyway to further explain these 2 variables, as they looks the same to me.

    Best.

    Jet.

  • 0 in reply to Jianyuan Yu
    TI__Mastermind 31680 points

    Hello Jet,

    Sorry for the delay in response.

    Are you able to see all the captured frames when you increased the concerned parameter in the script? Is the captured file size equivalent to the amount of frames configured? I've been able to capture data for large time intervals with my setup.

    Regards,

    Ishita