Internal Calibrations Page 8-
These calibration files may be copied to a PC for review by
removing the SD Card and inserting it into a laptop or computer
with an SD Card reader. Since they are text files, they can be
viewed by any text editor, Microsoft Word or imported to
Microsoft Excel for analysis. In addition, the files can be read
by selecting the “History” option in the device calibration menu.
For example, selecting Devices / Ozone Generator / Ozone
Generator Calibration / History will allow the file shown on the
previous page to be viewed from the front panel.