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Home > Hardware Reviews > Optical Storage > DVD-ROM

Friday, October 14, 2005
Plextor PX-130A

4. DVD Error Correction Tests

In the following tests, we examine the DVD reading capabilities of the drive with scratched / defective DVD media. For the tests, we used CDVD Benchmark and Nero CDSpeed. The reference test media came from ALMEDIO.

- Single Layer media

ABEX TDR-821

This is a single sided, single layer DVD-ROM with 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.

As we can see form the above graph, the performance of the PX-130A with the 821 test disc is excellent. No errors or speed variations and a smooth line, indicating good DVD error correction.

ABEX TDR-825

This is also a single sided, single layer DVD-ROM of 4.7GB capacity. The data structure of the disc is exactly the same as that of the TDR-821, with the difference that there are no scratches on it but instead defective areas of dimensions ranging from 0.5 to 1.1 mm.

There are also fingerprints sized between 65 and 75 micrometers.

Once more, great performance with defective DVD media. The artificially defective areas did not pose a problem for the error correction mechanism of the PX-130A DVD-ROM drive.

- 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.

With a near perfect graph yet again, the PX-130A read over the defective areas on Dual Layer media.

ABEX TDR-845

The disc is a single sided, dual layer DVD-ROM disc with a capacity of 8.5GB. The only difference between the TDR-845 and the TDR-841 is that the first includes defective areas and fingerprints. The dimensions of the defective areas range from 0.5 to 1.1 mm and the fingerprints are sized from 65 to 75 micrometers.

Great DVD error correction capabilities once more from our reviewed drive. Both layers were read without errors or speed variations.

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 upon 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 from 0.4 to 3.0 mm.

No errors or drops in speed with this test disc from the PX-130A DVD-ROM. Excellent performance.

ABEX TDV-545

The TDV-545 disc is based on the TDV-540 series. It is a single sided, dual layer DVD-VIDEO 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 micrometer thickness, fingerprints.

In 14:06mins, the drive made quick work of the 545 test disc, managing to complete the reading without errors.

Excellent DVD error correction capabilities. The Plextor PX-130A is surely the definitive reader when it comes to DVD media. A great addition to the DVD-ROM market.




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