The Rion VP-33A Mechanical Vibration Calibrator is designed for inspecting and calibrating vibration level meters using mechanical excitation (cam type) to ensure low distortion. The drive motor delivers stable performance, even when load conditions or power supply voltages fluctuate. As a result, the calibration level and frequency remain consistent, with minimal impact from differences in accelerometer weight. The VP33A generates oscillations at 6.3 Hz with a level of 97 dB.