It is possible that the sensitivities outlined on the accelerometer’s certificate have not been entered into the meter correctly, or have been lost. Check the values in the menu under Function > Calibration > Channel # > Calibration by Sensitivity. The value will be in mV/ms2 and should be the same per channel as to what is written on the certificate. In Svantek meters, Channel 1 is usually X, channel 2 is Y and channel 3 is Z.