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Owning Palette: Load/Save Signals Express VIs

Installed With: Sound and Vibration Measurement Suite

Performs all the data and file operations necessary to write time signals or real-valued spectra to a file formatted according to the UFF58b (universal file format binary) format. You then can import this file in a number of common sound and vibration applications to perform additional analysis. You can write time and real frequency measurements such as coherence, power spectrum, and power spectral density. If a frequency spectrum is in decibels, this step converts the spectrum to linear before writing to the UFF58 file. This step does not support writing complex frequency measurements.

Dialog Box Options

Block Diagram Inputs

Block Diagram Outputs

Dialog Box Options

Parameter	Description
Signals	Displays the signals to write to the UFF58 file. Use the Zoom button to zoom in and out of the display.
Autoscale	Automatically adjusts the scales of the graph to display the data.
Input	Contains the following option: Input signal—Specifies the input signal for the step.
File Settings	Specifies the path and write mode for the UFF58 file. Contains the following options: UFF58 file path—Specifies the absolute path to the UFF58 file. Write mode—Specifies how you save the UFF58 file. You can select one of the following options: Create—Creates a new UFF58 file. Create or Replace—Creates a new UFF58 file. If the file exists already, the NI Sound and Vibration Assistant replaces the existing file with the new file.
ID Lines	Specifies settings for populating ID lines in the UFF58 file. Contains the following options: Record 1—Contains the following options: Populate ID line 1—Specifies how to populate ID line 1 in the UFF58 file. ID line 1 typically contains the function description. You can select one of the following options: Channel Name—Populates ID line 1 with the channel name of the input signal. Custom—Populates ID line 1 with the contents of ID line 1 (Description). Place a checkmark in the Prepend channel name checkbox to prepend the channel name of the signal to the content of ID line 1 (Description). ID line 1 (Description)—Specifies the content written to ID line 1 of the UFF58 file. ID line 1 typically contains the function description. This option is available only when you select Custom from the Populate ID line 1 pull-down menu. Prepend channel name—Prepends the channel name of the input signal to the content of ID line 1 (Description). This option is available only when you select Custom from the Populate ID line 1 pull-down menu. Record 2—Contains the following option: ID line 2—Specifies the content written to ID line 2 of the UFF58 file. Record 3—Contains the following options: Populate ID line 3—Specifies how to populate ID line 3. ID line 3 typically identifies when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS. You can select one of the following options: System Time—Populates ID line 3 with the system time of the computer. Custom—Populates ID line 3 with the contents of ID line 3 (Time). ID line 3 (Time)—Specifies the content written to ID line 3 of the UFF58 file. ID line 3 typically identifies when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS. This option is available only when you select Custom from the Populate ID line 3 pull-down menu.

Block Diagram Inputs

Parameter	Description
UFF58 file path	Specifies the absolute path to the UFF58 file.
input signal	Specifies the time-domain waveform to save to the UFF58 file.
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.
input spectrum	Specifies the spectrum to save to the UFF58 file. This input appears if you select Spectrum (1 Ch) or Spectra (N Ch) from the Input signal pull-down menu.
spectrum info	Contains the spectrum information. The Power Spectrum Express VI and the Zoom Power Spectrum Express VI return this information. Wire the output from these VIs to the spectrum info input.

Block Diagram Outputs

Parameter	Description
error out	Contains error information. This output provides standard error out functionality.