This control tab offers settings for the signal to be measured.
 Channel
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VM-FFT 3D is a one-channel analysis tool. If more channels shall be viewed simultaneously, the instrument can to be cloned.
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By right-clicking on the channel, its color in the diagram can be adjusted (Change color).
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 Signal input
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Signal source selects the physical input for the vibration signal. Gain is used for the manual range selection.
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 Measurand and unit
The connected sensor determines the available options. Velocity and displacement are calculated from acceleration by integration (VM-FFT 3D+ only). The unit should be selected in a way that the measuring value does not drop below 0.001 permanently.
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 Characteristic
The following characteristics are available:
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Peak value:
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The height of the FFT line represents the amplitude of the corresponding sinusoidal signal.
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Peak-to-peak value:
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The height of the FFT line represents the peak-to-peak amplitude of the corresponding sinusoidal signal.
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True RMS value:
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The ehight of the FFT line represents the true RMS value of the corresponding sinusoidal signal.
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