SVT UFF58 Read VI

Sound and Vibration Measurement Help


Edition Date: March 2018
Part Number: 372416L-01
View Product Info

DOWNLOAD (Windows Only)


LabVIEW 2018 Sound and Vibration Toolkit Help
LabVIEW 2019 Sound and Vibration Toolkit Help

Owning Palette: UFF58b VIs

Requires: Sound and Vibration Toolkit

Reads data from a UFF58 (universal file format) function specified by the function refnum input. This VI also reads the fields in records 1, 2, and 3, returned by ID lines (1-3). You can read a single time domain waveform, a single frequency spectrum, the real and imaginary parts of a frequency spectrum, and any data from a function. The default instance, SVT UFF58 Read Time Waveform, reads a single time domain waveform from a function specified by the function refnum input. Wire data to the function refnum input to determine the polymorphic instance to use or manually select the instance.

Details  Example

Use the pull-down menu to select an instance of this VI.

SVT UFF58 Read Time Waveform

function refnum specifies the reference to a function in the UFF58 file.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
ID lines (1-3) returns the fields in records 1, 2, and 3. ID line 1 typically is used for the function description. ID line 3 typically is used to identify when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS.
ID line 1 (description) returns the contents of ID line 1.
ID line 2 returns the contents of ID line 2.
ID line 3 (date & time) returns the contents of ID line 3.
dup function refnum returns the same value as the function refnum input. You can wire this output to another VI. You can wire this output to the file refnum input of another UFF58b or UFF58 Advanced VI.
waveform returns a single time-domain signal read from the UFF58 file.
error out contains error information. This output provides standard error out functionality.

SVT UFF58 Read Spectrum (Real)

function refnum specifies the reference to a function in the UFF58 file.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
ID lines (1-3) returns the fields in records 1, 2, and 3. ID line 1 typically is used for the function description. ID line 3 typically is used to identify when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS.
ID line 1 (description) returns the contents of ID line 1.
ID line 2 returns the contents of ID line 2.
ID line 3 (date & time) returns the contents of ID line 3.
dup function refnum returns the same value as the function refnum input. You can wire this output to another VI. You can wire this output to the file refnum input of another UFF58b or UFF58 Advanced VI.
spectrum returns a single spectrum read from the UFF58 file.
error out contains error information. This output provides standard error out functionality.

SVT UFF58 Read Spectrum (Complex)

function refnum specifies the reference to a function in the UFF58 file.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
ID lines (1-3) returns the fields in records 1, 2, and 3. ID line 1 typically is used for the function description. ID line 3 typically is used to identify when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS.
ID line 1 (description) returns the contents of ID line 1.
ID line 2 returns the contents of ID line 2.
ID line 3 (date & time) returns the contents of ID line 3.
dup function refnum returns the same value as the function refnum input. You can wire this output to another VI. You can wire this output to the file refnum input of another UFF58b or UFF58 Advanced VI.
real part returns the real part of the spectrum.
imaginary part returns the imaginary part of the spectrum.
error out contains error information. This output provides standard error out functionality.

SVT UFF58 Read Generic

function refnum specifies the reference to a function in the UFF58 file.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
ID lines (1-3) returns the fields in records 1, 2, and 3. ID line 1 typically is used for the function description. ID line 3 typically is used to identify when the function was created. The date is in the format DD-MM-YY, and the time is in the format HH:MM:SS.
ID line 1 (description) returns the contents of ID line 1.
ID line 2 returns the contents of ID line 2.
ID line 3 (date & time) returns the contents of ID line 3.
dup function refnum returns the same value as the function refnum input. You can wire this output to another VI. You can wire this output to the file refnum input of another UFF58b or UFF58 Advanced VI.
abscissa values (X) returns the values of the coordinates on the horizontal axis.
ordinate values (Y Real) returns the real part of the spectrum.
ordinate values (Y Im) returns the imaginary part of the spectrum.
error out contains error information. This output provides standard error out functionality.
abscissa increment (dx) returns the interval between data points in the signal.
abscissa minimum (x0) returns the initial value of coordinates on the horizontal axis.

SVT UFF58 Read Details

You cannot edit a UFF58 file with the UFF58b or UFF58 Advanced VIs after you write and close the file. If you need to edit the contents of an existing UFF58 file after you write and close the file, you can read the information then write modified information to a new UFF58 file.

Example

Refer to the Read Time Waveforms with Records (UFF File) VI in the labview\examples\Sound and Vibration\UFF58 directory for an example of using the SVT UFF58 Read VI.

WAS THIS ARTICLE HELPFUL?

Not Helpful