Calibration and Units

For a more thorough explanation of the calibrations, please visit the page, Calibrations Explained. You can find the calibrator equipment we used here.

How to Calibrate the Equipment

You can either calibrate the equipment manually, or test the equipment with the software and calibrate using the recommended values. Follow the steps below to use the software to determine the calibration coefficients.

Under the Settings drop-down menu, click on Calibrations. Here, instructions will walk you through each of the calibrations.

Soundcard Voltage Calibration

• Turn on the voltage source and set the Gain (and channel)

• Set the known voltage

• Read and note the "Suggested Slope" value, and enter it into the "Current Slope" setting

Microphone Calibration

• Set the calibrator SPL in dB

• Turn on the calibrator, which is mounted over the microphone

• Read and note the "Suggested Cal" value, and enter it into the "Current Cal" setting.

Accelerometer Calibration

• Turn on the accelerometer calibrator

• Set the known acceleration in m/s^2

• Read and note the "Suggested Cal" value, and enter it into the "Current Cal" setting.

Vibrometer Calibration

• Turn on the vibrometer calibrator and focus the laser on the calibrator

• Set the known RMS velocity in mm/s

• Read and note the "Suggested Cal" value, and enter it into the "Current Cal" setting.

Hammer Calibration

• COMING SOON