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Posted by Tor Magne
Posted on 05/11/05 15:08
Number of views 10726
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Advanced tests
 
 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:
Lite-On XJ-HD166S

One Sheep Writer
SD2OLD

Yes

Two Sheep Writer
SD251

Yes

Safedisc Writer
SD290

Yes

Three Sheep Writer
SHEEP3

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…

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Good review with a good drive :)

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?
Great review. I have this drive and the latest firmware YS0V is really good especially with cheap media. Tried it so far MCC 004, PRODISC-R04-04, DVD+Rs and TTG02 DVD-Rs and it achieved constant scores of 90 to 95 in Nero CD-DVD Speeds. Lead-in is written much faster too, with TTG02 it does that in just 30 sec, with the other ones I tested in 41 sec. Overall, Liteon managed to tweak the firmware, if you own this drive you have to flash to YS0V!
:X
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