HLDS Specifications
      Show Part Numbers

Feature Description
Manufacturer Hitachi/HLDS
Model GSA-T20N
Supported Disc Formats
  • Reads: DVD-ROM, DVD-R (Ver.1.0, Ver. 2.0 for Authoring)and DVD-RAM (Ver.1.0)
  • Reads and writes: DVD-R (Ver. 2.1 for General), DVD-R DL (Dual Layer), DVD-RW, DVD-RAM (Ver.2.2), DVD+R, DVD+R DL (Double Layer), and +RW
  • Reads: CD-ROM, CD-ROM XA, CD-I, Video CD, CD-Extra and CD-Text
  • Reads: Photo CD (Single and Multi session)
  • Reads: Standard CD-DA
  • Read Support: Super Audio CD (compatible layer in hybrid type)
  • Reads and writes: CD-R discs conforming to Orange Book Part 2
  • Reads and writes: CD-RW discs conforming to Orange Book Part 3
  • CPRM (DVD-R/RW/RAM) supported
Supported Write Method
  • DVD-R: Disc at Once and Incremental Recording
  • DVD-R DL: Disc at Once
  • DVD-RW: Disc at Once, Incremental Recording and Restricted Overwrite
  • DVD-RAM: Random Write
  • DVD+R: Sequential Recording
  • DVD+R DL: Sequential Recording
  • DVD+RW: Random Write
  • CD-R/RW: Disc at Once, Session at Once, Track at Once and Packet Write
Average Access Time (1/3 stroke) DVD-ROM: 120 ms
CD-ROM: 110ms
Write Speed
  • DVD-R: 2X CLV, 4X ZCLV, 8X CAV
  • DVD-R DL: 2X CLV, 4X ZCLV, 6X ZCLV
  • DVD-RW: 1X, 2X CLV, 4X, 6X ZCLV
  • DVD-RAM: 2X, 3X ZCLV, 5X PCAV (Ver.2.2)
  • DVD+R: 2.4X CLV, 4X ZCLV, 8X CAV
  • DVD+R: DL 2.4X CLV, 4X ZCLV, 6X ZCLV
  • DVD+RW: 2.4X, 3.3X CLV, 4X, 8X ZCLV (8X Speed disc: 3.3X CLV, 8X ZCLV)
  • CD-R: 10X CLV, 16X, 24X ZCLV
  • CD-RW: 4X, 10X CLV, 16X ZCLV (High Speed: 10X CLV, Ultra Speed: 16X ZCLV Ultra Speed plus: 16X ZCLV)
Read Speed
  • DVD-ROM: 8X maximum
  • DVD-R (SL/DL): 8X maximum
  • DVD+R (SL/DL): 8X/ 8X maximum
  • DVD-RW: 8X maximum
  • DVD+RW: 8X maximum
  • DVD-RAM (Ver.1.0): 2X (Ver.2.2) 2X, 3X, 5X
  • DVD-Video (CSS Compliant Disc): 4X maximum (Single/Dual layer)
  • CD-R/RW/ROM: 24X/24X/24X maximum
  • CD-DA (DAE): 20X maximum
Sustained Transfer Rate DVD-ROM: 11.08 Mbytes/s (8X) maximum
CD-ROM: 3,600 kB/s (24X) maximum
Burst Transfer Mode
  • Ultra DMA Mode 2
  • Multi word DMA Mode 2
  • PIO Mode 4(
Applicable Disc Formats DVD

  • DVD-ROM: 4.7 GB (Single Layer)
    8.5 GB (Dual Layer)
  • DVD-R: 3.95GB (Ver. 1.0: read only)
    4.7 GB (Ver. 2.0 for Authoring: read only)
    4.7 GB (Ver. 2.1 for General: read and write)
    (DL) 8.5 GB (Ver. 3.0)
  • DVD-RW: 4.7 GB (Ver. 1.2/ Rev 1.0, 2.0, 3.0)
  • DVD-RAM: 2.6 GB/side (Ver. 1.0: read only)
    1.46 GB/side, 4.7 GB/side (Ver. 2.2)
  • DVD+R: 4.7 GB (Ver. 1.3) (DL) 8.5 GB (Ver. 1.1)
  • DVD+RW: 4.7 GB (Vol.1 Ver.1.3, Vol.2 Ver.1.0)

CD

  • CD-ROM Mode-1 data disc
  • CD-ROM Mode-2 data disc
  • CD-ROM XA, CD-I, Photo-CD Multi-Session, Video CD
  • CD-Audio Disc
  • Mixed mode CD-ROM disc (data and audio)
  • CD-Extra
  • CD-Text
  • CD-R conforming to Orange Book Part 2 read and write
  • CD-RW conforming to Orange Book Part 3 read and write
Writing method
  • DVD-R/RW: Disc at Once
    Incremental Recording
    Restricted Overwrite (DVD-RW only)
  • DVD-R DL: Disc at Once (DAO)
  • DVD-RAM/+RW: Random Write
  • DVD+R: Sequential Recording
  • DVD+R DL: Sequential Recording
  • CD-R/RW: Disc at Once (DAO)
    Session at Once (SAO)
    Track at Once (TAO)
    Packet Writing 2.3
Disc Diameter 120 mm
80 mm
Burst Transfer Rate
  • Ultra DMA Mode 2: 33.3 Mbytes/s maximum
  • Multiword DMA Mode 2: 16.6 Mbytes/s maximum
  • PIO Mode 4: 16.6 Mbytes/s maximum
Data Buffer 2 MB
Temperature Operating: Read: 5 to 50° C, Write: 5 to 45° C
Storage/Transportation: -30 to 60° C
Humidity Operating: Read: 15 to 85% (Non-Condensing), Write: 15 to 80% (depending on the temperature)
Storage/Transportation: 10 to 90% (Non-Condensing)
Altitude Operating: 0 to 3,000 m
Non-operating: 0 to 12,000 m
Source Voltage +5V ±5%
Current
  • Stand-By (sleep): 40 mA typical
  • Continuous read: 800 mA typical (CD-ROM 24X maximum CAV) 750 mA typical (DVD-ROM 8X maximum CAV)
  • Continuous write: 900 mA typical (CD-R 24X ZCLV) 900 mA typical (DVD+R 8X CAV) 1000 mA typical (DVD+/-R DL 6x ZCLV)
  • Seek: 950 mA typical, 1.3 A maximum (CD-ROM 24X maximum CAV)
  • Spin up: (spindle motor start up) 1.0 A typical, 1.6 A maximum (CD-ROM 24X maximum CAV)
  • Maximum current: 1.6 A
Dimensions 128 (W) x 12.7 (H) x 129 (D) mm