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5. PERFORMANCE
5.1 Operating Performance
(1) Average random access time : 90msec average (CD-ROM, 24x), 110msec average (DVD-ROM, 8x)
(2) Disc speed : Refer to 4.2
(3) Data transfer rate
(a) Read sustained : 1,545 to 3,600kB/sec (CD-ROM model)
4,469 to 10,816kB/sec (DVD-ROM)
(b) Programmed I/O : 16.7MB/sec max (Mode 0 to 4)
(c) Multi-word DMA : 16.7MB/sec max (Mode 0 to 2)
(d) Ultra DMA : 33.3MB/sec max
(4) Starting time
(a) When power is switched on/when disc is loaded
: 19sec max (excluding the multi-session CD)
(b) Return time from the standby mode
: 4sec or less
(5) Data buffer capacity : 2MB
5.2 Audio
(1) Line output
The following specifications apply during audio play.
(a) Number of channels : 2 channels (stereo)
(b) Frequency response : 20 to 20kHz (±3dB)
(c) Dynamic range : 83dB or more (IHF A, 1kHz, LPF 20kHz)
(d) S/N : 85dB or more (IHF A, 1kHz, LPF 20kHz)
(e) Distortion factor : 0.05% or less (1kHz, 20kHz LPF)
(f) Channel separation : 70dB or more (1kHz, 20kHz LPF)
(g) Output level : 0.8Vrms ±3dB (load = 47kΩ ATT = 0dB)
(h) Muting : each channel independent (using the ATAPI command)
(i) Volume : Software volume using the ATAPI command;
255 steps from volume level 0 to −∞ (infinity) dB; variable for each
channel independently.
5.3 Acoustic Noise
(1) Operating : 45dBA or less (during seek/read/write/Active/Idle, distance 0.5m)
(2) Ejecting : 65dBA or less (distance 0.5m)
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