Sensitivity for vibration
If the instrument is used under strong vibrational conditions, it is recommended to use an extension cable between
the preamplifier and the instrument body. The vibration will mainly affect the microphone, which is most sensitive
if the vibration is applied perpendicular to the diaphragm. Typical values are 55 dB to 65 dB for acceleration
values of 1 ms-2 perpendicular to the diaphragm.