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Owning Palette: Order-Domain Measurements Express VIs

Installed With: Sound and Vibration Measurement Suite

Extracts order waveforms from an input signal. This step can return order waveforms of one order or multiple orders. Use this step in offline analysis.

Dialog Box Options

Block Diagram Inputs

Block Diagram Outputs

Dialog Box Options

Parameter	Description
Colormap	Displays the colormap of the input signals. The y-axis is frequency and the x-axis is time. Use the cursor to select an order you want to preview on the plot. Autoscale—Automatically adjusts the scales of the graph to display the data.
Order waveforms	Displays the waveform of the input signal and the waveforms of the orders that you specify in the Output list. Autoscale—Automatically adjusts the scales of the graph to display the data.
Input	Specifies the channel settings for the input signal. This option is available only with the NI Sound and Vibration Assistant. Input signal—Specifies the signal for which this step computes the order waveforms. Speed profile—Specifies the rotational speed waveform.
Configuration	Contains the following options: Order bandwidth (order)—Specifies a range of orders. The center of this range is the Order to preview. Specify an Order bandwidth (order) value between 0.01 and 1. If Order bandwidth (order) is less than 0.01, this step sets the Order bandwidth (order) to 0.01. If Order bandwidth (order) is greater than 1, this step sets the Order bandwidth (order) to 1.The default value of Order bandwidth (order) is 0.5. Window—Specifies the type of window to apply to the colormap and the order waveform. None Hanning Hamming Blackman-Harris Exact Blackman Blackman Flat Top 4 Term B-Harris 7 Term B-Harris Low sidelobe Gaussian (Default) Window length (samples)—Specifies the length of the window to apply to the individual spectra in the Colormap. Window length (samples) must be a power of two and greater than or equal to 128. This step rounds Window length (samples) to the nearest valid value when Window length (samples) is less than 128 or not a power of two. Increasing the value of Window length (samples) can improve the frequency or order resolution but decreases the time or speed resolution. The default is 2,048.
Order Selection	Contains the following options: Order to preview—Specifies the order whose waveform you want to preview. You also can use the cursor on the Colormap to select the order to preview. The minimum value is 0.01. The default is 1. Extract—Extracts the waveform of the order you specify in Order to preview. Clicking the Extract button also adds the order to the Extracted orders list.If you place a checkmark in the Auto Export checkbox and then click the Extract button, the Sound and Vibration Assistant adds the Order to Preview to the Output list also. Extracted orders—Lists the orders whose waveforms you extracted. You can select one order or press the <Shift> or <Ctrl> keys to select multiple orders whose waveforms you want to export as outputs. Auto export—Specifies that, when you click the Extract button, the Order to preview moves to both the Extracted orders list and Output list. If you remove the checkmark from this checkbox and click the Extract button, the Order to preview moves to the Extracted orders list only. Export—Exports the waveforms of the orders you select in the Extracted orders list. Clicking the Export button also adds the order or orders to the Output list. Output list—Lists the order or orders whose waveforms you want to export.

Block Diagram Inputs

Parameter	Description
input signal	Specifies the input signal.
speed profile	Specifies the rotational speed waveform.
error in	Describes error conditions that occur before this Express VI runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

Block Diagram Outputs

Parameter	Description
order waveform	Returns the waveforms of the orders that you specify in the Output list.
unit label	Returns the units of the order waveform.
error out	Contains error information. This output provides standard error out functionality.
order list	Returns the order or orders whose waveforms you exported to the block diagram.