Digiducer 333D01 USB Digital Acceler Multi-Instrument Manual
Virtins Technology
The default sampling rate of 333D01 is set to 48 kHz and the default bit resolution is set to
24 bits. This will give optimal measurement accuracy although other sampling rates and bit
resolutions are also supported.
1.5 Sensor Sensitivity
The sensitivity of USB accelerometer is calibrated individually in factory and persisted in the
hardware. Multi-Instrument is able to read it out automatically and use it to scale the acquired
data for processing, analysis and display. So usually you do not need to bother about it.
The USB accelerometer has two sensitivity values, one for each of the two channels. The
sensitivity of Channel B roughly doubles that of Channel A, thus the measurement range of
Channel B is about ½ of that of Channel A.
If you want to check the sensitivity values, go to [Setting]>[Calibration]. The sensitivity will
be shown with the unit of g/V. Please make sure that the values in “Range (V)” column under
Sound Card Input Calibration Factor are all “1” V (default values). The measurement range
of the sensor is then ± 1/sensitivity (g).
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