Please input the value with half-width digits and press the original unit button of the following dialog box. The values which are converted into each unit are displayed in the lower column.
Please input the effective value of the signal for m/s2. The frequency is unknown. The dB value is not a vibration level (without frequency correction) but a vibration acceleration level (with frequency correction).
Converts with A dB = 10 log (a1/a0)2 = 20 log (a1/a0), a0 = 10-5m/s2 , 1 G = 9.807 m/s2 1 gal = 1 cm/s2
Furthermore, the calculation value does not completely correspond with the actual value, due to the relationship with the significant digit.
Revised:2002/12/16
