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| Posted by | Tor Magne |
| Posted on | 05/11/05 15:08 |
| Number of views | 10726 |
The 'Sheep test":
For this test, we will use the Sheep tests made by Alexander Noé. Why is it called Sheep Test? That is because the symbol of the first 1 to 1 copy program called CloneCD is a sheep. When looking at supported writers, you will notice that the feature list has sheep to indicate if a feature is supported or not. In this case we are interested in the writer's ability to backup/write weak sectors. Also called: 'Correct EFM encoding of regular bit-patterns".
⋅
No sheep:
Can't backup any Safedisc 2 versions without the help of software
tricks
⋅
1 Sheep:
Can backup Safedisc 2 up to version 2.4x without software tricks
⋅
2 Sheep:
Can backup Safedisc 2, including version 2.5x
⋅
3 Sheep:
Can write all possible weak sectors, few if any writers could do this.
One of our forum moderators, Womble, has written a guide concerning the 'Sheep Test" that could be found here.
In the screenshot below we see that the Lite-On SHW-1635S supports all available write and read features in CloneCD:

The Lite-On SHW-1635S supports DAO-RAW96 recording mode. This means that it can write uncorrected data and subchannel data.
Below are our results from the 'Sheep Tests":
|
Sheep Tests |
Reader: |
|
One Sheep
Writer |
Yes |
|
Two Sheep
Writer |
Yes |
|
Safedisc
Writer |
Yes |
|
Three Sheep
Writer |
No |

The Lite-On SHW-1635S qualifies as a two sheep writer and could also backup Safedisc version up to 2.90 or maybe even higher.
Overburning:
To test the CD overburning capabilities of the Lite-On SHW-1635S we used the overburning test in Nero CD-DVD-Speed. According to Nero CD-DVD speed the drive can overburn to more than 99 minutes.
Media used is Ritek 99-minute media. We had problems with Nero and thus used the create data disc function in Nero CD-DVD Speed with overburning enabled and set to 99:57.74

Nero CD-DVD speed wrote the disc with no problems up to almost 100 minutes
There are no problems with reading the 99-minute disc.
Now, this is the end of the testing part of this review, head over to the summary and conclusion at the next page…

I´m surprised about the improving from older 16x Liteon to the newer ones.
But what in the hell Liteon think when tey optimizing the RW-strageties?




DVD+R DL and DVD-R DL writing performance
Conclusion
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