Specifications
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Following are the specifications for the 48X/32X/48X CD-RW/DVD combination drive.

Feature Specification
Manufacturer HLDS
Model number GCC-4481B
Interface ATAPI BUS (IDE)
Applicable disc formats
DVD
  • DVD-ROM (DVD Book)
  • DVD-Video
  • DVD+R/RW
  • DVD-R/RW
CD
  • CD-ROM Mode-1 (basic format)
  • CD-ROM XA
  • CD-Audio and CD EXTRA
  • Mixed Mode (Audio and Data Combined)
  • Photo-CD (Single, Multi-Session)
  • CD-I (FMV), VIDEO-CD ready
  • CD-Plus
  • CD Extra
  • CD-R (Read/Write)
  • CD-RW (Read/Write)
  • CD-TEXT
Cache memory (read/write) 2 MB
Buffer underrun Super-Link function embedded for buffer underrun
Performance
Rotational speed
DVD (single layer-data) 16X speed: 9,500 rpm (typical)
CD (CD-ROM/CD-R data) 48X speed: 10,200 rpm (typical)
Data transfer rate (sustained)
CD
  • RW: 2,700 to 6,000 Kbytes/sec (18X to 40X CAV)
  • R/ROM: 3,000 to 7,200 Kbytes/sec (20X to 48X CAV)
DVD
  • Dual: 4,460 to 10,800 Kbytes/sec (3.3X to 8X CAV)
  • Single: Data: 8,700 to 21,600 Kbytes (6.5X to 16X CAV)
    Movie: 4,460 to 10,800 Kbytes (3.3X to 8X CAV)
    -R/RW, +R/RW: 3,370 to 8,100 Kbytes (2.5X to 6X CAV)
IDE interface burst transfer rate
  • 16.6 MBytes/sec maximum
  • 16.6 MBytes/sec maximum
  • 33.3 MBytes/sec maximum
Access time (random)
  • DVD-Single: 120 ms (typical)
  • CD: 100 ms (typical)
  • CD-RW: 100 ms (typical)
Data capacity (Yellow book)
CD (Yellow book)
  • 2,048 bytes/blocks (Mode1 & Mode2 Form1)
  • 2,336 bytes/blocks (Mode2)
  • 2,328 bytes/blocks (Mode2 Form2)
  • 2,352 bytes/blocks (CD-DA)
DVD (Book A, B) 2,048 bytes/blocks
Buffer size 2 MB
DAE (Digital Audio Extraction) rate Minimum 20X (CAV), maximum 48X (CAV)
Analog audio play Minimum 4X (CAV), maximum 10X (CAV)
Reliability
MTBF 90,000 POH (an operating duty of 10% at room temperature)
User error rates:
  • DVD: 10-15 block/bits
  • CD Mode 1: 10-12 block/bits
    Mode 2: 10-9 block/bits
Audio
Line Out (load impedance: 47 kohm)
  • Output level: 0.7 Vrms ± 10%
  • Frequency response: 20Hz - 18kHz ± 3 dB
  • THD [1kHz, 20kHz LPF]: 0.15% (Min)
  • S/N Ratio [1kHz, A filter]: 75 dB (minimum)
  • Channel separation: 60 dB (minimum)
Environmental
Ambient temperature
  • Operating: 41 to 122° F (5 to 50° C)
  • Storage (non-operating): -40 to 149° F (-40 to 65° C)
Relative humidity
  • Operating: 20 to 80% (no condensation)
  • Storage (non-operating): 5 to 95% (no condensation)
Power
  • +5 VDC <1.3 A
  • +12 VDC <1.3 A