DVD+R DL burning
A DVD+R DL is burned at 2.4X speed. So an 8.2 GB DVD requires 44 minutes and 50 seconds to be recorded with the lead in and lead out included. In Nero Burning Rom you will notice the bar indicating the 8.5 GB available with a blue bar for the layer 1 and a yellow bar for the layer 2.
As we only had Verbatim blank DVD+R9 for the tests, it was not possible to test the efficiency of the Liteon burner with any type of media. However we have observed the burning quality with Kprobe 2.1.
The test is made on the PIE (Parity Inner Errors) and the PIF (Parity Inner Failures). The figure obtained with the PI is accurate. However the 832 S Mediatek chipset doesn´t give directly the PO (Parity Order), but the Parity Inner Failures, which is quite different.
A PIE is notified when at least an error of one octet is found in one ECC block line. The tolerance for the DVD+R format is a maximum of 280 PIE in 8 ECC block consecutive lines. One ECC block line represents 182 octets. The last ten have the Parity Inner (PI). An ECC block has 208 lines and the last 16 have the Parity Order (PO) information. The most important information in the graphics is: if the average registered by Kprobe is low and if the PI max is superior to 280. It has to be noted that most of the time isolated peaks are a software mistake.
A PIF is a non correctable PI error. If an ECC block line include more than 5 octets, this line is considered non recoverable. In Kprobe, the maximum and average number of PO (as a matter of fact PIE) shouldn´t reach over 32. There again don´t trust isolated peaks not representative of the media condition.
A minimum PI and PIF error level has to be taken in account but is not essential as burned media with an error level beyond the limit aren´t inevitably unreadable. The main consequence will be a lower compatibility with players more demanding on the burning quality. It will also be red slower than another media with a higher burning quality level. But be careful, this measure is only one indication amongst others on the burning quality. The jitter and reflectivity are also two other elements to take into account.
First, the example of the result of a 3.6 GB pressed DVD (UT 2004).
Now the results provided by a Verbatim DVD+R DL with 8.2 GB of data burned with the 832S.
The maximum figure shouldn´t be taken into account as they correspond to the peaks observed on the two graphics. The PI level is slightly concentrated in the beginning of the disc, but is of one third of the maximum level authorized by the ECMA337 norm. Then the average is below 10 until the second layer and goes up again to 20. This result is excellent and quite flattering for the burner and the media.
The PIF (PO on the graphic) is also excellent wit a low average of 0.06 PIF. Altogether, the burned DVD figures aren´t far from the pressed DVD.
Even if the main innovation of the Lite-On SOHW-832S is the double layer DVD burning, it is also able to burn single layer DVD at 8X speed and for RW a 4X speed. In practice, and if you have the adequate media, burning a DVD+/- R take between 9mn12s and 9m34s with an average 6.8X speed. The RW media require 14mn30s at 4X.
