Why must the data-log files be EXPANDED to view the data?
The GEM 610 and GEMINI 1200 store data in a proprietary compressed- file format. FILE EXPANSION is Insight’s terminology for converting the GEM’s compressed IDF or ADF files into standard ASC (ASCII) format. The compressed files are extremely small in size for the amount of data they contain and therefore require little storage space in the GEM or on your computer. The small size also means they take little time to transfer. The ASC files require much more storage space but are ASCII format (ASCII is the American Standard Code for Information Interchange) and are compatible with nearly every type of computer.
