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Posted by Bob on 11/15/80 11:35
On Sun, 25 Dec 2005 19:57:10 GMT, mcp6453 <mcp6453@earthlink.net>
wrote:
>The disks are Memorex crap,
I call them MemoWrecks. They are the worst of the worst.
>but I just did a test on a Verbatim (MCC 003) DVD+R and got a quality rating of 45, not that I know what that
>means. The scan was fine, but the errors (PI and ??) seemed high.
Each burner-disc combonation is different. PIF is the main thing to
watch. Scan at 4x (or 5x on latest CD-DVD Speed). Look for dye
slotches on the media. MCC 03RG20 are notorious for them.
Try burning the MCC 003 at 8x. Several people on CDFreaks recommend
burning 16x-rated discs at 12x or even 8x.
>What are they supposed to be?
According to the ECMA standard:
A row of an ECC Block that has at least 1 byte in error
constitutes a PI error. In any 8 consecutive ECC Blocks, the total
number of PI errors before correction shall not exceed 280.
A row is 182 bytes long where the last 10 bytes contain PI (Parity
Inner) information. An ECC block is 208 rows long where the last 16
rows contain the PO (Parity Outer) information. This gives us a
maximum possible PI error amount of 208 errors per block, and for 8
blocks after each other, this sum is of course 8 times higher giving a
maximum possible amount of 1664 PI errors.
If a row of an ECC Block contains more than 5 erroneous bytes, the
row is said to be "PI-uncorrectable" or PIF (Parity Inner Failures).
In any ECC Block, the number of PI-uncorrectable rows should not
exceed 4.
>Can things REALLY be this bad?
Yes. Check CDFreaks for details:
http://club.cdfreaks.com/showthread.php?t=146146
http://club.cdfreaks.com/showthread.php?t=150385
http://club.cdfreaks.com/showthread.php?t=154807
http://club.cdfreaks.com/forumdisplay.php?f=86
Use only Taiyo Yuden discs to be safe.
supermediastore.com
meritline.com
rima.com
I am using Fuji rebrand YUDEN000 T02 8x +R on my NEC 3540 and only
have had one coaster out of 40 burns. The scans look very good. I got
them at Best Buy on sale for 35 cents. But I had to know to get MIJ
(Made in Japan).
--
Merry Christmas!
http://www.illwillpress.com/xmas.html
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