We rencently noticed a rounding issue when saving filter files under foton for the first time. (See SEI aLog # 360)

We needed a brand new foton file, with the filters of an actual platform, to perfom before/after saving in foton comparison.

To do so: I made a backup copy of H1ISIITMY.txt. Then I Emptied the coefficients of H1ISIITMY.txt, after letting Hugh know that no one should reload the coefficients on ITMY while I was doing that. I then ran the SEI prepare script, which copies the coefficients from Matlab files to the Foton file. H1ISIITMY.txt was then the file I needed, I copied its content, and reverted H1ISIITMX.txt to the backup I made earlier.

While doing this, I noticed that, both before and after, the GDS_TP screen of the ISI was notifying a modified IIR file, meaning that the filters in the foton file did not match what was currently being used, and that filters would be updated when pushing the "coeff reload" button.