Asus DRW-0804P
5. DVD Error Correction Tests
Review Pages
2. Data CD Reading Tests
3. Error Correction Tests
4. DVD reading tests
5. DVD Error Correction Tests
6. Protected Disc Tests
7. DAE Tests
8. CD Recording Tests
9. Writing Quality Tests - 3T Jitter Tests
10. Writing Quality Tests - C1 / C2 Error Measurements
11. DVD Recording Tests
12. DVD Writing Quality Tests _ Page 1
13. Conclusion
14. DVD Writing Quality Tests _ Page 2
Asus DRW-084P - Page 5
DVD Error Correction Tests
In the following tests we examined the DVD reading capabilities of Asus with scratched / defective DVD media. For the tests we used CDVD Benchmark and Nero CDSpeed. The reference test media come from ALMEDIO.
- Single Layer media
ABEX TDR-821
This
is a single sided, single layer DVD-ROM with a 4.7GB capacity, and its surface
has an artificial scratch of dimensions varying from 0.4 to 3.0 mm. The following
transfer rate picture comes from the CDVD Benchmark v1.21 transfer rate test.
The above screenshot shows that the Asus drive managed to finish the error correction test without problem. The process was fast and with CAV reading strategy the test finished without read errors.
ABEX TDR-825
![](/article_sources/Asus_DRW_0804P/images/media_825.gif)
Although this is test disc has more defects than the previous test media, the error correction test finished without read errors. Moreover, the drive didn't change reading speed while reading through the defective areas as the above screenshot shows.
- Dual Layer media
ABEX TDR-841
This is an 8.5GB dual layer, single sided DVD-ROM disc with artificial scratches of dimensions ranging from 0.4 to 3.0mm, on both layers.
The Dual layer media was not a problem for the Asus drive. Once again with CAV reading strategy and a high end speed, the error correction test completed without read errors.
ABEX TDR-845
This
disc is a single sided, dual layer DVD-Rom disc with capacity of 8.5GB. The
only difference between the TDR-845 and the TDR-841 is that the first includes
both defective areas and fingerprints. The dimensions of the defective areas
range from 0.5 to 1.1 mm and the fingerprints have height sized from 65 to
75 microns (micrometers).
The above screenshot comes from CDVD and shows the reading performance of the Asus DRW0804P during the reading process of the most difficult defective media. Once again the error correction performance of the Asus drive was excellent, since the drive finished the test without read errors and with a high end speed. As the screenshot shows, at some areas, the drive changed reading speed to overcome the defects but the overall performance wasn't effected.
ABEX TDV-541
The
TDV-541 is a single sided, dual layer DVD-VIDEO disc, with a capacity of 8.5GB.The
disc is based on the TDV-540 series which is designed for inspection and adjustment
of DVD-VIDEO players. The disc checks the layer switch operation from layer
0 to layer 1 and also includes test pictures and test signals for DVD sound
files. The current TDV-541 also checks the error correcting capabilities of
the drive
and includes scratches sized from 0.4 to 3.0 mm.
On this test, although the drive managed to read the first layer without problem, after the layer switch operation it changed the reading speed from 8X to 6X in order to read the defective areas. Although the average reading speed of the Asus wasn't as high as in the previous error correction tests, NeroCDSpeed reported no errors.
ABEX TDV-545
The
TDV-545 disc is based on the TDV-540 series. It is a single sided, dual layer
Video/S-2
disc with a capacity of 8.5GB. The TDV-545 includes artificial black dots on
the disc's surface, sized from 0.4 to 1.0 mm. It also has 65 - 75 micrometers
high
fingerprints.
The last DVD error correction reading test, finished fast with a high end speed and no read errors.
Review Pages
2. Data CD Reading Tests
3. Error Correction Tests
4. DVD reading tests
5. DVD Error Correction Tests
6. Protected Disc Tests
7. DAE Tests
8. CD Recording Tests
9. Writing Quality Tests - 3T Jitter Tests
10. Writing Quality Tests - C1 / C2 Error Measurements
11. DVD Recording Tests
12. DVD Writing Quality Tests _ Page 1
13. Conclusion
14. DVD Writing Quality Tests _ Page 2