Hi...

Just did a few radom C1-scans of older CDRs i had laying around, as i discovered a realy strange phenomenon.

I had my LTR-40125S oc'ed with the VS02´, as i ran around some realy poor quality discs. The Discs are labled SilverCircle. The were certified 24X. They were burned about half a year ago on my Brother's LTR 24102B, don't know witch firmware...

here the Atip:

ATIP info from disk - Read by Feurio 1.65
Recorder: LITE-ON - LTR-40125S
ATIP start of lead in: -02:27:56 (Sektor: -11081)
ATIP start of lead out: 79:59:74 (Sektor: 359999)
Manufacturer code: 97 32 19 - Prodisc Technology Inc. (Typ: 9)
Disc subtype: Medium Type C, low Beta category (C-)

and now some scans. As already said, always the same CD. Did five scans with each Firmware. Just finished scan, did Screenshot, ejected CD, reinserted CD and did next scan. And look at the scaling, it changend between the scans!!











so after these really poor results, i decided to test the same CD with VS06. so went out of wses, flashed with mtkflash, rebooted, and repeated the procedure.











Results are better, but not mutch.

so now ZS0K:











AAAAHHH mutch better. not over 200 C1. still mutch, but remember, its a low quality CDR.
and now, just for fun a scan with ZS0A:











As You see, ZS0A is gives the best reading quality with the 40125S... But who wants to use it, as it is zone CLV...


axc27

That's a lot of curves

You're right. but I held them small... only 8 KB each...

I'm confused as to whether you tested ZSOK or ZSOA, but ZSOK is CAV, and will produce the same quality as ZSOA. I have a hundred scans in ZSOK that look much like yours, and another bunch in VSO1-6 that are also the same as your VS02.

@axc27

What program did you use to scan the CDRs for errors?

I do. When I need to burn my Sony media p-cav or cav FWs doesnt like Sony at all, ZS0A makes even with smartburn=off 0 errors, until Sony 40X arrive here.

For my other media (Princo, Ritek, and Prodisc) I use VS02.

I was under the impression that this "non-existant" program and the associated screen shots were taboo here at this time.

sorry, did not know that... seems as if i have missed some importent threads!? could You repeat why we should not post such scans, and not speak about that "non-existant" program?


@ Alejandra: Remember: I did olny make scans of one and the same CD, burned on a 24102B. it is not burn, but read abilities i wanted to point at!!

axc27

@ axc27:

you pointed that ZS0A is Z-CLV, and this is for writing. For reading ZS0A is CAV like any other FW.

I pointed too, ZS0A has better reading abilities.

I must say that Lite-On burners aren't the best in reading. And thats the fakt.

I have allso done some tests. Burn a CD in 48x with VS02.
And then done som reading tests.

Reading in Lite-On burner. Got about 200 errors in C2
And the fun thing is that when I read it next time I got 0 errors!??

Then I test reading the CD in Teac 540E I got 0 C2 errors! Nice! And even if I reading the CD again it stil is 0 C2 errors!

So? I think that you can get to an conclution that Lite-On have a litle pore reading engine. My opinion.

What do you think?

/Dyzan

http://home.bip.net/mikaj/40125w/

axc27

what program did u use to get those screen shots?

the nice little program ST.exe (screen Thief). its included in the zip-file.

what program did u use to get those graphs ?

the program is an internal Lite-On program called wses.exe (run in pure dos only). It was leaked by a person, but since the legality of posting links to the programs was questionable we decided to remove the links.....

sorry.

that sucks :-)

PM Alex for it then....