Compaq 4120T Personal Computer User Manual


 
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6-12 Specifications
Table 6-11
4X CD-ROM Drive
A
pplicable Disc
CD-ROM mode 1, mode 2
CD-Digital Audio
CD-XA mode 2 (Form 1, Form 2)
CD-I mode 2 (Form1, Form 2)
CD-I Ready
CD-Bridge
CD-WO (fixed/variable packets)
Photo CD (singlemultisession)
Center Hole Diameter
15 mm
Disc Diameter
12 cm, 8 cm
Disc Thickness
1.2 mm
Track Pitch
1.6 µm
Laser
Beam Divergence 53.5 ± 1.5 degrees
Output Power 0.24 ± 0.1 mw
Type Semiconductor Laser GaA1As
Wave Length 780 nm ± 25 nm
A
ccess time
Random <350 ms
Full Stroke <750 ms
A
udio output level
Line Out 0.7 Vrms
Headphone None
Cache buffer
128 KB
Data transfer rate
Sustained, quad 600 KB/sec
Sustained, single 150 KB/sec
Burst 8.3 MB/sec
Startup Time <8 seconds typical
Capacity
Mode 1, 12 cm 550 MB
Mode 2, 12 cm 640 MB
8 cm 180 MB