I finally received my second scan drive, a LiteOn LH20A1H and immediately proceeded to make scans from discs I’ve already scanned in my Plextor 716, scanned at 2x and known to be a reliable scanner.
Having no time to assemble my new PC and wanting to test this drive’s scan capabilities asap, I hooked it up via a USB2.0 bridge. This seems to work fine. I used Nero CD/DVD Speed to make the scans.
I scanned at 2x, 4x, 8x and 16x and some results are a bit surprising. All scans report a similar level of PIE errors, except the 8x, where the number is slightly lower. It’s peculiar that 2x and 4x scans show higher PIE, but the difference isn’t that big. More interesting is the vast difference in PIF errors. On a particular disc, at 8x I get about 3200 PIFs, whereas the same disc results in 1600-1700 PIFs at all other speeds (slower and faster).
Both PIE and PIF are about half of what the Plextor reports (taking the result of 8x scan, at other speeds especially the number of PIFs is much lower than on the Plextor).
No jitter is reported, although I selected this test. Is this the USB2.0 connection interfering or is the LH20A1H not capable of jitter scanning?
How do I interpret these results? I trust the Plextor more than I do the LiteOn, but the LiteOn is know to have pretty consistent results. I’ll do more disc tests and if they show the same trend I have a faster scanner, I just need to multiply the resulting error rates by a factor. What I’m asking about isn’t the LiteOn vs Plextor results but the rather puzzling difference in results (of PIF errors reported) at different speeds of the LiteOn. Is this merely the result of the lesser number of samples taken at 16x, that gives the same result as the slower speeds? And the 8x result at high number of samples simply gives more errors because of the higher scan speed?
edit: Moderators: I thought I posted it in the media forum, now it’s in the firmware forum but no comment by a moderator that it was moved. Did I make a mistake or was it moved?