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When you have finished performing all of the functions you desire on a data file you can save it with the original filename or save it under another name using the File/Save Analysis option. The standard win- dow is displayed allowing you to select a filename and location for the data analysis file.

Once an analysis has been saved in a data file, the analysis results can be retrieved by selecting the Restore button on the Data File Information window. See “Entering Data File Information” in this chapter.

Another way to save a modified file is to use the File/Export Data File function, which is described in the next section.

Saved analyses that have been performed using the DOS version of Universal Analysis are restorable using this program. However, if you overwrite the DOS analyses with this program, the original record of analyses can no longer be used for the DOS Universal Analysis program.

Exporting Data Files

Universal Analysis provides the ability to export the file signals and/or the plot signals in the form of a binary data file, an ASCII data file, or a spread sheet text file. This will let you use your

data in other software applications such as spread sheet programs and word-processing programs for reports, etc.

To export your data files, select File/Export

Data File from the main menu. The menu

shown here is displayed. The menu items found on the Export Data

File menu are used for the following purposes:

• TTS Signals: Use this option to export selected DMA or DEA

Time-Temperature Superposition (TTS) signals from the data file. • File Signals Only: Use this option to export selected signals from

the data file only.

• Plot Signals Only: Use this option to export selected signals from

the plot only.

• File and Plot Signals: Use this option to export selected signals

from the data file and the plot.

Select one of the options described above, the Export Data File window Saving Files

Figure 2.12 Export Data File Window

Follow these instructions to continue with the export procedure:

1. Click to check or uncheck the output signals displayed. The checked output signals will be exported. You can limit the output signals by selecting only those signals that you want to save in the exported file. (At least one signal must be selected.)

2. Click on the desired type of export file:

• Binary format (standard file format) saves the files in a special

binary format. This format stores the data in an efficient, com- pact form and preserves the method log information.

• ASCII (American Standard Code for Information Interchange)

format saves the data file in a text format that allows the data file to be imported into other software packages, or transmitted conveniently through serial communication protocols. • Spread Sheet format saves the data file in a "tab-delimited"

spread sheet-compatible ASCII text format, which places the data in columns. This format is compatible with most commercial spread sheet programs. When importing or exporting this file format, select "Tab delimited text" format in the spread sheet program.

3. Choose the desired character set: OEM or Windows. Universal Analysis can handle both the OEM (PC-8) and the Windows (ANSI) character sets in data files. The OEM (PC-8) character set origi- nated with the Disk Operating System (DOS) and the first personal computers. The OEM character set contains the original 128 ASCII characters plus an additional 128 special symbols (including the degrees symbol, the micro symbol, etc). The Windows character set was developed by Microsoft® Corporation for use with their Win- dows operating system. The Windows character set also contains the original 128 ASCII characters, but a different set of 128 special symbols is used.

4. Click on the desired export options:

• No parameter block exports the data file without any param-

eter block information. Note that if you check this option, the exported file will not be able to be opened in Universal Analysis as a data file, because there will no longer be any parameter block information available. Leave this box unchecked (default) to export your data file with the parameter block information intact.

• No data breaks or flags exports your data file without any data

breaks or data flags such as cycle markers, gas on/off changes, or event on/off changes. This allows you to remove data breaks that may hinder your use of the data in spread sheet applications. When this item is checked, the minus time flags are removed from the data and all points appear connected. Leave this box unchecked (default) to export your data file as it is, with all data breaks or flags intact.

• No invalid data points removes any invalid data points that are

present in the data file from the exported data file. These invalid points will be replaced with a single data break for each group of invalid points. NOTE: If the option No data breaks or flags is checked along with this checkbox, no data break will be inserted in place of the invalid points in the exported data file. Leave this box unchecked (default condition) to export your data file as it is, with all invalid data points included.

5. Click on the Finish button when completed to specify an export filename and location.

The data file information displayed on the window can be selected and copied, but it cannot be altered here. To change the data file information shown on the Export Data File window, you must alter it on the initial

Data File Information window when the file is first opened.

NOTE:

This function also allows you to save data that has been modified with the options found in the Tools menu and the Edit/Exclude Data menu (except the “Marked as invalid data” option).