Export Data Log 
From the Data Logger view, you can export a data log from the AC Source application to CSV (comma-separated values) format. You can export a data log even if the AC Sourceis currently acquiring measurements.
To export the data log, click 
> Export Datalog. Set the Export Settings according to your preference and click Export.
Below are the Export Settings dialog details:
Export File Details
File Name - The default file name has a "Trace" prefix followed by a numeric index. For example, Trace 0. To change the default name, click on the existing name and edit it.
Export Path - The currently selected path for saving the file on your computer. To change the path, click Browse and browse to a different path.
File Type - The export file format is CSV (comma-separated values) format only.
Trace Data Summary
Number of Traces - The number of traces in the data file.
Total Samples - The number of samples in the data file.
Export Options
Column Separator - Select Comma (,) (default), Semicolon (;), or Tab as the column separator.
Record Range - Select to export all records (All Records), export records within the markers (Export using marker range), or export a range of records (Filtered by record number). If you select Filtered by record number, enter the Set to Start and Set to End record numbers in the fields.