Difference between X2M200 and X4M03 sweep settings

Discussion in 'Respiration Sensor' started by Hammad Tariq, Jul 12, 2017.

  1. Hammad Tariq

    Hammad Tariq New Member

    Hi,

    We are comparing the output signals coming from X2M200 with X4M03. We are getting absolute baseband amplitude values from X4M03 between -0.5 to 0.5 while the amplitude value for X2M200 module connector MATLAB respiration example code is coming in the range of 0 - 100. I have been looking at the datasheets and understood sweep controls, can this be a difference of DAC min max and pulse+iteration values?

    If so, can I know the reference settings provided in fw of X2M200?

    We are typically using what is given in the example code for X4M03:

    Code:
    # Set DAC range
    r.x4driver_set_dac_min(900)
    r.x4driver_set_dac_max(1150)
    
    # Set integration
    r.x4driver_set_iterations(16)
    r.x4driver_set_pulses_per_step(26)
    In such short amplitude, we are experiencing trouble in separating noise from the target. Can you please point us to the right direction?

    Another statement that I am not able to understand in the matlab example is:
    Code:
    [frame, ctr] = radar.GetFrameNormalized();
    That is only present in X4M03 code, can this be a problem?