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The next step is to measure the torsional vibration. To do this, we need to select both input channels in the Torsional vibration setup. We select B0_CNT0 as the first channel and B0_CNT2 
as the second channel. Then we need to define Sensor 1 and Sensor 2. If we have a gearbox in between, we need to enter the Gearbox ratio 
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| Torsional vibration setup |
The Input filter can be set in a range between 100ns and 5μs. The optimal settings are derived from the following equation:
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RPMMAX ..... max. revolutions per minute [s-1] PPR ......... pulses per revolution [-] |
Angle offset / Reference curve configuration
A click on the Zero button removes the angular difference (offset) between the two sensors (set angle offset to 0). |
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A click on the Set button records the current torsion angle over one revolution as reference. When Use reference curve is checked, the recorded reference is subtracted in the angle domain from the current torsion angle! Thus, torsion errors caused by the sensors or their fixing can be overcome! |
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There are two additional channels available:
| - | Torsional angle, which is the dynamic torsional angle that is the angle difference from sensor 1 to sensor 2 |
| - | Torsional velocity is the difference in angular velocity from sensor 1 to sensor 2. |
