Originally posted by cjr
I mean c2-errors (these ones, plextools (non-prof.) reports)
But: If the CD has e32 errors (and a CDR has e32-errors, if you record it on an audio-recorder, where the laser stopps for the next track. When playing this CDR on an CDP, the CDP sends the e32-errorbit between these tracks), it has also c2-errors. But plextools does not show it.
Please bear in mind, that we have no info on which c2-errors the other Plextor-drives show. The PX-W4824A might (I dunno) show other E-types of C2. Since I have a PX-W4824A (and PX-W4012A) I did some cross-checks. Only the Premium showed C2-errors on some tested media, the other drives showed none.
We also know, that the Premium shows E22 as C2 and E32 as CU ("uncorrectable) according to manual. When I C2/CU test a medium with PT-Pro, it shows other values than e.g. a “readcd -c2scan”, because readcd can only query the “official” C2-counter in the drive. But we do not know, which errors are in this special chipset register.
Plextool does also not report the errors, which are on CDs with Cactus Datashild.
“readcd -c2scan” does however show many C2-errors on such CDS media. I did not use PlexTools (the normal ones) much in those days.
For example, the CDP sends every some seconds E32 error-bit, plextools reports nothing
I’m not sure, what to conclude. The CDP might have other reading capabilities than the plexwriter. The PT manual states, that C2 scans are done at 24x, because they wanted to show the errors, not to test the drive’s capabilities. C2 errors mean, that the drive was not able to get data correctly. Mostly this is due to a bad medium, but when you e.g. test media in different drives, you’ll soon see, that you get plenty of variation in error numbers, since some drives can read better than others. IMHO it’s not a good idea to compare error-numbers of different hadwares.
PS: Every CDP sends an errorbit in the spdif-datastream, when uncorrectable errors occur (only DVD-Players and most audiorecorders don’t)
That’s a very nice feature, and you show a good example why a “perfect” medium in a Plexwriter does not necessarily mean “perfect” for the CD-player. Even if the Plexwriter says “no errors”, the CD-player might still pick some up, because it’s reading capabilities are different.
Kind regards Frederick