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Multisim Help

Edition Date: February 2017

Part Number: 375482B-01

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Saving Grapher Files

Simulation data in Multisim consists of unevenly sampled time-value pairs. This is not an issue when saving either Multisim Grapher files (*.gra) or standard text files (*.txt). However, text-based measurement files (*.lvm) such as those created in LabVIEW require that the data be evenly sampled. Depending on how you wish to use the data, you may also wish to resample the data for binary measurement files (*.tdm) so that they are evenly sampled.

Complete the following steps to save a file in the Grapher:

  1. Select File┬╗Save as.
  2. A standard Save As dialog box appears.

  3. Select the desired file type from the drop-down list.
  4. Available file types are:

    • Graph files (*.gra)—Multisim Grapher files.
    • Text files (*.txt)—Standard text files.
    • Text-based measurement files (*.lvm)—Files such as those created in LabVIEW.
    • Binary measurement files (*.tdm)—Files used to exchange data between National Instruments software, such as LabVIEW and DIAdem. Note that when you save data to this file type, two files are created: a header file (.tdm) and a binary file (.tdx).
    • CSV (comma delimited) files (*.csv)—Comma delimited files.
    • DLM file for MathScript (*.dlm)—Files for use in MathScript.
  5. Select the desired filepath, enter a file name and click Save.
  6. The Select Pages dialog box displays if there is more than one tab in the Grapher.

  7. Select the desired tabs and click OK.
  8. Graph files (*.gra) and text files (*.txt) are saved to the location specified.

  9. If you chose to save the file as a .lvm or .tdm file, the Data Resampling Settings dialog box appears.
  10. Change the following settings as desired:

    • Do not resample radio button—Appears for .tdm files only. Enable if you do not wish to resample the data. The other options are disabled.
    • Resample data radio button—Appears for .tdm files only.
    • Interpolation mode—select one of Coerce, Linear interpolation, Spline interpolation.
    • Dx (in seconds if time-domain data)—The sampling period to use for resampling.
    • 1/Dx (in Hz if time-domain data)—The sampling rate to use for resampling.
    •   You can change either Dx or 1/Dx. The other will change accordingly.

    • Estimated file size—This read-only field changes as you change either Dx or 1/Dx.
  11. If you chose to save the file as a .dlm file, the DLM Settings dialog box appears.
  12. Change the following settings as desired:

    • Output trace name in title line (first row) checkbox—Select to include trace name in file.
    • Select one of the following radio buttons in the Select a delimiter for DLM file box:
      • Tab—Data in file will be separated by tabs.
      • Semicolon—Data in file will be separated by semicolons.
      • Comma—Data in file will be separated by commas.
      • Space—Data in file will be separated by spaces.
      • Other—Select and enter another separator type in the associated text field.

 

Related Information

Saving Simulation Data to LVM and TDM files

Interpolation Modes


 

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