I purchased an FScan2 the end of last year and experimented with it and ended up returning it. I posted some excel spreadsheets and graphs on the fscan message board at yahoo groups. If you go to the "files" section you will find the spreadsheets listed as some_fscan_results.xls below is the url for the files section and then for the spreadsheet;
People seem to have a hard time understanding that in treatment mode the fscan is applying frequencies and just because something happens doesn't mean that the DIRP function had anything to do with it. As you found out just the random application of frequencies can have an effect.
You mentioned the PEAR project. I have wondered myself about the random noise effect in the FScan. You might find this site interesting;
Kiran (from bioenergeticmedicine.org) is coming out with a plasma tube attachment for the CoRe that will be driven by the CoRe using frequencies determined by the software. I’m receiving a demo here any day to give it a spin. Will be interesting.
One of the problems with the FScan2 is that the screen is so small it is hard to tell what is going on. That is why importing the results to Excel is so nice.