[QUOTE=Sonic2171;2069505]I bought the 1650 for the purpose of scanning CD’s[/quote]You’re aware, I hope, that the Benq/Nexperia drives (thus including the 1650) don’t report C2 as other drives and are not suited to scan CDs on their own?
They report C2=E32, though C2 “standard” reporting should include E22 (is that right Drage?)… so some important condition defects leading to reading issues (not necessarily failures) can’t be seen in scans from these drives, unless you use the Advanced scan and check specifically E22 and E32, just like Dragemester explained in his post BTW.
My use of the [1650+standard scan] is specific, to check for burning quality (jitter, C1) and, if in a hurry, I used to consider that with no C2 reported, even with the limitation explained above, the disc was probably fine. Why not use Advanced scans everytime? Well, because I find these more tricky to grasp visually, and habits, darn habits… LOL
@Dragemester: with the disc in my first post, all TRTs fail at all speeds (in the 1650, but pass in my other drives :p). With other discs showing a similar quirk, TRT results are very inconsistent and don’t seem to be correlated with reading speed.
Actually, after lots of cross-checks, I gather that the problem exposed with E32 reporting at different speeds, is limited to discs with problematic physical condition before the burn. I’m not 100% sure but I’m tired to focus on this thing, while it’s more important for me, right now, to re-check 57 discs in my NEC 3540A.
For the jitter/speed reporting quirk, I’ll perform additional cross-checks, but it seems to happen only with my Ritek and MCC CDs, and not with CMC, TY, Sony, Maxell…