APPENDIX C: FILE FORMATS

R7RAW Data

When radon concentration data is retrieved from a RAD7 that does not have RADLINK installed, it is recorded to disk in the R7RAW format. A R7RAW file is a plain text file containing up to 1000 rows of radon test data. Each row is divided into 23 unlabeled columns, separated by commas. Although this text is not easily human readable, it is well suited for graphing and analysis within CAPTURE and other applications. This 23 column format is fully documented in the PC Connectivity section of the RAD7 manual.

CAPTURE does not allow a R7RAW file to be modified and then saved back to disk under its original name. Instead it must be saved in the R7CDT format.

Earlier versions of CAPTURE used the RAW file name extension instead of R7RAW. This has been changed to avoid conflicts with unrelated files that use the same extension.

Note that CAPTURE can open files using unrecognized file name extensions. Users who have renamed their R7RAW data files using custom extensions such as DAT and CAP will still be able to view graphs of their RAD7 files, because CAPTURE can determine a file's format based on its content.

When data is downloaded from a RAD7 that has RADLINK installed, it is saved in the R7CDT format. R7CDT files are text-based files, and they can be viewed, modified, and resaved in CAPTURE. Modifications may include the configuration of Run Parameters or the assignment of a custom RAD7 profile. R7CDT data may be opened and viewed in a text editor, but it may be difficult to read since it contains complex information.

Earlier versions of CAPTURE used the CDT file name extension instead of R7CDT. This has been changed to avoid conflicts with unrelated files that use the same extension.

TXT Document

A TXT (Text) file is a plain text document that can be opened in any text editing or word processing application. TXT files are created when exporting certain kinds of data from CAPTURE, such as RAD7 Printer Data and Data Summary Reports. Additionally, CAPTURE can open legacy RAD7 Data files that are stored in the TXT format.

CSV Data File

The Export Column Based Data command can be used to create a CSV (Comma Separated Values) data file. CSV files are text-based documents that use commas to separate data fields, and they can be opened directly in Microsoft Excel and other spreadsheet applications.

TSV Data File

The Export Column Based Data command also can be used to create a TSV (Tab Separated Values) data file. TSV files are text-based documents that use tabs to separate data fields, and they can be opened directly in Microsoft Excel and other spreadsheet applications.

HTML File

When a Radon Inspection Report is exported from CAPTURE, it is saved in the HTML format. It can be opened in any web browser. Image content is embedded directly inside the HTML file.

PNG Image File

When a graph image is saved using the Save Graph Picture command, CAPTURE produces a PNG image file. The PNG format uses lossless compression to ensure small image file sizes, without sacrificing image quality.

PDF Document

The PDF file format is a cross platform format for finished documents that generally can't be modified. On most systems CAPTURE's Print dialog box can be used to generate PDF files containing graph images and basic graph statistics.