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

Overall values

 
For overall vibration values VM-PLOT 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-PLOT+ only).
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 value:
Root mean square value
Main frequency:
Frequency with the highest magnitude
Mono harmony (MH):
Total harmonic distortion, deviation from pure sine-wave
Crest value:
Ratio of absolute peak and RMS
5

Time window

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