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1 vib calibration interface, 4 vib dbref value, 5 vib dynamic range – Soft dB Opus Suite SLM & 3Vib Module User Manual

Page 26: Vib dbref value, Vib dynamic range

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6.2.3.1

Vib Calibration Interface

Step 1

Adjust the calibration parameters

The defaults values are:

Averaging time: 5 s

Frequency: 157 Hz

Calibrator Level: 1 g rms

Step 2

Install the calibrator device on the microphone

Step 3

Click START

After the average time is elapsed, the sensitivity value will update.

Step 4

Click OK to accept the sensitivity value

After the average time is elapsed, the sensitivity value will update.

6.2.4

Vib dBref value

The dBref value is the reference value that is used to establish the zero decibel (dB) level. In the
application, the decibel level will be based on this reference. The dBref value for vibration
measurements is normally 1E-6 m/s².

6.2.5

Vib Dynamic Range

The dynamic range of the vibration inputs is around 94 dB. Only one range is available for vibration
inputs. The table below provides examples of the dynamic range limits for given sensitivities of
100 mV/g.