It depends. I like to have a C1 max less than 100, and C2 total less than 10000. If there are no C2, I usually do not mind.
Reading the screenshot , CMC No-AZO (A) are better than CD AZO ( B)...why ?
Some discs are great. Some discs are okay. So the CMC non-AZO are "very good", while the [B] AZO are only "good". The quality changes all the time.
i know that AZo cd are the best of Verbatim series , or not ?
They are supposed to be the best, yes. But again, the quality is not always "great". Sometimes, the quality is only "good". "Good" is still...good.
Can you explain me what it mean ( in C1 errors ) : Avg , max and total ?
A long discussion in English: http://club.myce.com/f77/interpreting-c1-c2-error-scans-75573/
It is hard to explain, but... When reading a CD/DVD/Blu-ray, there will always be some small errors. For CD, C1 are the small errors. C1 errors do not cause a problem unless there are many in one spot.
Total C1: the number of C1 errors your optical drive fixes while reading the whole disc.
Max: Imagine that a CD is divided up into many "blocks". In each block, some C1 occur. If one block has more errors than any other block, that is where the max (maximum) occurs. So... If one block has 25 C1 errors, and all other blocks have less than (or equal to) 25 C1 errors, then "Max = 25".
Average: Again, imagine that a CD is divided into many "blocks". Each block has some errors. Block 1 has 25 errors, block 2 has 23 errors, block 3 has 24 errors, etc. You take the average of those different numbers.
You want average, maximum, and total to be low.
You can test the same CD two times, and the results will be slightly different. Also, sometimes your optical drive will exaggerate. Remember that.
Usually , a counterfeit CD (fake cd) , have only Verbatim screen printing or also marked ZE-XXXX and Verbatim's ID codes ?
all this information can be present in a fake cd or not ?
A counterfeit AZO CD will not have "ZE-XXXX"/"ZD-XXXX". Sometimes, a counterfeit AZO CD will have Verbatim's ID codes.
Non-AZO discs do not have the Verbatim ID codes or "ZE-XXXX". If it is not CMC Magnetics or Moser Baer, it is probably fake.
All dates printed in the box of disks reported year 2007...the date referred to the year of production or not ?
if so, how can cd have a bad smell after 7-8 years of production data ?
The CD are probably very new (2012? 2013? 2014?). The dates printed in the box are probably when Verbatim updated the reading material.
I have tested Verbatim dvd buyed on the same store ( 100 DVD+R and 100 DVD-R ) , here the screenshot....
DVD+R : code 43551 ( MCC004) - ZE4939-DVR-T47D ( PAPA 21SK240413401967)
DVD-R : code 43549 ( MCC03RG20 )- ZE5834-DVR-J47F4 ( MAPA 18SL25002810 )
what identify the PAPA...MAPA....description ?
Those are codes used by CMC Magnetics as a serial number or identification number:
For Verbatim media made by CMC Magnetics:
[B]PA[/b]PA means "Plus, AZO Dye"
MAPA means "Minus, AZO Dye"
PAPA means "16x".
Other CMC Magnetics discs will have similar codes, but will be different dye (MTP, MSP, PTP, etc), or come from different assembly lines (MAP6 instead of MAPA, PAP6 instead of PAPA, etc).
Prodisc, Moser Baer India, and FTI do not use these codes. (But Verbatim media made by those companies will still have ZD-XXXX or ZE-XXXX).
what do you think (about quality ) ? DVD-R seems better that DVD+R
The DVD+R is mediocre. The DVD-R is very good.
How many PIE-PIF errors can accept ? the range within PIE-PIF errors on DVD which considered OK ( dvd good quality )
It is like C1 and C2; it depends on many things.
You can have many PI Errors.... but if you have many PIF (PI Failures), you have a problem.
You will always have some PIF, but too many PIF and your optical drive has to slow down or try again; the optical drive could not easily fix the problem it had reading the disc.
You want maximum PIF to be lower than 8. Maximum PIF lower than 4 is good.
You want average PIF to be lower than 0.50. Average PIF lower than 0.20 is good.
You want total PIF to be very low. Less than 10,000 is very good. Less than 1,000 is excellent.
For a "very good" disc, you do not want big clumps of tall PIF errors. Short/low clumps are OK.
On your MCC 004 (DVD+R), from 2.0 GB to 3.5 GB, PIF are short/low, have a maximum of 2, and is okay.
But from 4.0 GB to 4.5 GB, and from 0 to 1.5 GB, you see PIF clumps that are tall, with a maximum of 7. This is what makes the DVD+R "mediocre" instead of "good". That means the disc is harder to read. It will probably still be OK.
On the DVD-R (MCC 03RG20), there are no PIF clumps, and the maximum PIF in a single block is 2. That means the disc was easy to read.
thank you very very much
By the way: your optical drive is made with a MediaTek chipset/processor. Because of this, it will only show the worst C1 and the worst C2. You can test your CDs, but it does not tell you everything. But do not worry; you will still know if a CD is bad. You will still see many (many many many) C1 and C2 errors.
For DVD, your drive is fine. Your optical drive may be optimistic (it is probably very good at reading discs), but you will still know if a disc is bad.