• adcmxl3021 velocity drift


    we are evaluating the use of adcmxl3021 and faced some issues with MTC (Manual Time Capture) with velocity calculation enabled. 
    No FIR filter is applied and AVG_CNT=4 is used.
    The sensor is not moving, standing on the table, but its calculated velocity…

  • Sync multiple ADcmXL3021

    I want to use few ADcmXL3021 located few feet apart. I it possible to synchronize the sampling of all sensors to be able to measure the propagation delay for the vibration wave?

  • Question about ADcmXL3021 sample rate

    hi,  i am new in signal processing, and i've got some questions when using ADcmXL3021.

    i want to use MTC mode for collecting axis's time domain data, for datasheet says "For MTC mode, the sampling rate is always 220 kSPS and captures 4096 samples"…

  • ADcmXL3021 MTC mode

    For the MTC mode, the sampling rate is always 220 kSPS and captures 4096 samples. And 4096 means number of sample. So it means that if there are no averaging, i can get almost 53(=1/18.62ms) continuously data with full 4096 samples? (means total 53*4096…

  • RE: ADcmXL3021 single FFT record time with Teensy 4.1

    Setting FFT_AVG1 = 0x0101 and FFT_AVG2 = 0x0101 solved this issue. FFT averaging was not disabled. Now samples for 700ms.

  • ADcmXL3021 same data from all three axes

    We are using the ADcmXL3021 with the Teensy 4.1 microcontroller. We are currently reading the X_BUF, Y_BUF and Z_BUF registers with the following setup:

    - SPI clock speed is set to 13MHz 

    - Operating Mode: MFFT (also tried MTC)

    - Window Setting: Hanning

  • ADcmXL3021 Questions

    Hi, my customer has the following questions as shown below:

    1. On data sheet page 23 table 20, there are eight (0-7) options for AVG_CNT settings. Whereas on page 41 table 89, there are only seven (1-7) options. Which one is the right one?;
    2. He would like…
  • ADcmXL3021 SPI

    Hello, now I am using ADcmXL3021 to get the vibration data via SPI, but unfortunately, there is no reference source code. I could not find anywhere. Just we have SPI PROGRAMMING EXAMPLE in the Datasheet. I want to make and control the SPI communication protocol…

  • ADcmXL3021 FFT conversion

    In the datasheet are two different formulas for the conversion of the FFT raw values to mg.

    Q1: Is the following formula the right one?:

    Q2: How should zero X_buf values be handled? Are they really converted to a non-zero mg value?

  • RE: ADcmXL3021, ADIS16228 and their evaluation interface boards

    Hi busymax,

    Thank you for your interest in ADcmXL3021 and ADIS16228. I'm afraid that the board and software for each of the device won't be compatible with one another.

    Best regards,