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Thread: [Position2Go] Frame interval vs time measured through ComLib interface

  1. #1
    Beginner Beginner agallenSMX is on a distinguished road
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    [Position2Go] Frame interval vs time measured through ComLib interface

    I set up my position2go to capture 128 points at 300 kHz sampling frequency in Doppler mode. This means 1 chirp (not really a chirp because doppler) per frame.
    The reported minimum frame time interval is 1.426 ms. The frame interval is set to match the minimum.

    When I capture the frame data using the ComLib C Interface on my computer, I save timestamps with every received frame.
    My timestamps are showing 2.5 to 3.5 ms gaps between frames.

    I assume the reason this time doesn't match the frame time because my program has some overhead for writing data to file, but what does that mean for the Position2Go?
    Am I skipping frames because I can't request as fast as the frame interval? Am I receiving frames that could potentially be several milliseconds old?
    How exactly does the Position2Go to ComLib interface data buffer work?

  2. #2
    Beginner Beginner ruhul8357 is on a distinguished road
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    I could run the comlib but what does the adc output means ?

  3. #3
    Beginner Beginner agallenSMX is on a distinguished road
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    ADC output is the data that is fetched by extract_raw_data.c. The ADC is the Analog to Digital Converter, since the mixed signal is measured analog. If you plot the raw data, you'll see a waveform as produced by the mixer on the board.

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