AOpen DUW1608/ARR 16x DVD+/- R/RW Review - Specifications
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| Interface | |
| Recording Capacity | - DVD±R - 4.7GB
- DVD±RW - 4.7GB
- DVD+R (Double Layer) -8.5GB
- CD-R - 700/650MB
- CD-RW - 700/650MB
|
| Data Transfer Mode | - UDMA Mode 4 (66MB/sec)
- DMA Mode 2 (16MB/sec)
- PIO Mode 4 (16MB/sec)
|
| Max. Recording Speeds | - DVD+R DL (Double Layer) - 2.4X
- DVD+R (Single Layer) - 16X
- DVD-R - 8X
- CD-R - 48X
|
| Max. Rewriting Speeds | - DVD+RW - 4X
- DVD-RW - 4X
- CD-RW - 32X
|
| Max. Reading Speeds | - DVD+R (Double Layer) - 8X
- DVD-ROM (Double Layer) - 8X
- DVD-ROM (Single Layer) - 16X
- DVD+R (Single Layer) - 12X
- DVD-R - 12X
- DVD+RW - 8X
- DVD-RW - 8X
- CD-ROM - 48X
- CD-R - 48X
- CD-RW - 48X
|
| Buffer Memory | |
| CD Writing Mode | - Track at Once (TAO)
- Disk at Once (DAO)
- Session at Once (SAO)
- Multi-session
- Fixed Packet
- Variable Packet
- Raw Mode Burning
- Over-Burn
|
| DVD Writing Mode | - Multi-session recording (DVD+R)
- Random recording (DVD+RW)
- Disc at Once, Multi-Border (DVD-R)
- Restricted overwrite, DAO,
- Multi-border (DVD-RW)
|
Some of the highlights from the specifications include: it's rated 16X DVD+ R writing speed, double layer (DL) capable writer, buffer under run prevention, adaptive writing speed adjustment, self-calibration, smart reading speed detection, 2MB buffer, and it is ATA66. ATA66 might not sound like a big deal for an optical drive but it is important to notice. Installation with the older ATA33 will cause the drive to burn at slower speeds than it is rated.
One thing that isn't found in the specifications is the reading and writing schemes used by the DUW1608/ARR. AOpen only has this to say about the scheme(s) used: "During the process of high-speed recording/writing, an unbalanced optical disc will wobble slightly; under CLV (Constant Linear Velocity) mode, recording/writing quality will decrease due to this wobble and the constant power. However, by adopting the ROPC (Running Optimal Rower Control) technique, the device can adjust its power by detecting feedback signals from the disc so as to create optimal writing / recording quality."
The following image shows the four typical schemes for reading and writing. It appears the ROPC technique that AOpen mentions is a hybrid of some these modes, depending on the quality of media used.
Additionally, AOpen outlines active measures they've taken to minimize the occurence and damage from disc breakage.
Next: Protection From Disc Breakage >>
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