GT3X+ devices produce an interim compressed file with file extension *.gt3x. This is a compressed file and must be extracted to a usable format using ActiLife’s import/export tool which is accessible from the File menu in ActiLife. The file can be exported to *.agd format for processing in ActiLife or *.csv/*.dat format for processing using third party tools. The *.gt3x file can also be exported directly to *.agd format during the download process by checking “Create AGD File” from the download prompt.