The basic model VC20 generates a fixed amplitude of 10 m/s² (RMS) at 159.2 Hz. This frequency was chosen because it corresponds to a radian frequency of 1000 s-1 where the following relationship exists for sine-wave signals:
10 m/s² acceleration = 10 mm/s velocity = 10 µm displacement. The unit has just one on/off push-button. A bright OLED display
shows frequency and amplitude, the amplitude error as a percentage and the battery condition.
Its powerful electrodynamic shaker allows the calibration of heavy test objects up to 600 grams. The built-in NiMH accumulator lasts for approximately 5 hours of operation.
A cast aluminum enclosure protects the instrument under harsh field conditions.
