Does PlexTools really use FE/TE scan information on the next burn? PlexTools context-sensitive Help claims "PoweRec uses the FE/TE information and will adjust the recording speed automatically (if enabled)".
I ran a FE/TE scan on Disc 1; test result was "This media can be recorded at the highest speed". I then used PlexTools immediately afterwards to 4x burn data on Disc 1. I then rebooted, inserted Disc 2 (from the same spindle of Memorex 8x +R Ritek R03) and 4x burned the same data. PoweRec was enabled both times. PI/PO scans were then run on the two discs. The attached (merged) graphs show the results. The gray scale on the right is from the FE/TE scan.
Conclusions: The FE/TE test stated that the media could be recorded at the highest speed (in firmware 1.05, 8x on PX712a). The burns were done at 4x and it was highly unlikely PoweRec kicked in at any time, so the results are inconclusive. A more suitable test would be with media that FE/TE claimed could not be recorded at the highest speed (in firmware) and selecting that speed anyway, particularly with a Write Transfer test so that PoweRec fluctuations could be graphed and merged with the FE/TE test graph for comparison purposes. We would then see if PoweRec fine-tunes the burn speed as it goes (ROPC), or merely drops to half the rated speed (in firmware) throughout the entire burn.