Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
PC Vibration Measurement System VibroMetra

Overall values

These values are calculated from the analog inputs of the USB device.
Overall values

Signal input

1. Signal input
Selects the physical input and the gain of the USB device M302 / M312.


2. Filter
Here you adjust the frequency range of the displayed value fmin to fmax.

Measurand and unit

3. Measurand and unit
The connected sensor determines the available options. Velocity and displacement are calculated from acceleration by integration.


4. Characteristic
The following options are available:
Current value
Indicates the current value of the alternating signal.
4 peak values:
Positive, negative, absolute, peak-to-peak
True RMS:
Root mean square value
Main frequency:
Frequency with the highest magnitude
Mono harmony
Total harmonic distortion, deviation from pure sine-wave
Crest factor:
Ratio of absolute peak and RMS

Time window

5. Time window
Time interval for calculating the characteristic value.