VibroMetra User Manual

Overall values

 
For overall vibration values VM-REC measures analog input signals from the USB devices.
Overall values
1

Signal input

 
1. Signal input
Selects the physical input and the gain of the USB device.
2

Filter

 
2. Filter
Here you adjust the frequency range of the displayed value fmin to fmax.
3

Measurand and unit

 
3. Measurand and unit
The connected sensor determines the available options. Velocity and displacement are calculated from acceleration by integration (VM-REC+ only).
The unit should be selected in a way that the measuring value does not drop below 0.001 permanently.
4

Characteristic

 
4. Characteristic
 
The following options are available:
Instantaneous value
Shows the current value of the switching signal
4 peak values:
Positive, negative, absolute, peak-to-peak
True RMS:
Root mean square value
Main frequency:
Frequency with the highest magnitude
Mono harmonic:
Total harmonic distortion, deviation from pure sine-wave
Crest factor:
Ratio of absolute peak and RMS
5

Time window

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