Specifications
NAS B2000 Maintenance and Service Guide
5-5
COMPAQ CONFIDENTIAL
Codename: Collins Part Number: 292280-001 Last Saved On: 5/30/02 1:08 PM
CD-ROM Drive
Table 5-5: CD-ROM Drive Specifications
Item
Description
Applicable disk
CD-ROM (modes 1 and 2); mixed mode (audio and data combined);
CD-DA; Photo CD (single/multiple-session), CD-XA ready; CDi ready
Capacity
550 MB (mode 1, 12 cm)
640 MB (mode 2, 12 cm)
Block size
2368, 2352 bytes (mode 0)
2352, 2340, 2336, 2048 bytes (mode 1)
2352, 2340, 2336, 2048 bytes (mode 2)
Dimensions
Height
12.7 mm (0.50 in)
Depth
123.08 mm (5.20 in)
Width
132.08 mm (5.20 in)
Weight
0.34 kg (0.75 lb)
Data transfer rate
Sustained
150 KB/s (sustained 1X), 1500-4800 KB/s (10X to 32X)
Burst
4.0 MB/s
Access times (typical)
Full stroke
300 ms
Random
140 ms
Diameter
12 cm, 8 cm (4.70 in, 3.15 in)
Thickness
1.2 mm (0.05 in)
Track pitch
1.6
µ
m (6.3 x 10
-7
in)
Cache/buffer
128 KB
Startup time
< 10 s
Stop time
< 5 s (single); < 30 s (multisession)
Laser parameters
Type
Semiconductor laser GaAs
Wave length
700
±
25 nm
Divergence angle
53.5
°
±
1.5
°
Output power
0.14 mW
Operating conditions
Temperature
5
°
C to 45
°
C (41
°
F to 118
°
F)
Humidity
5% to 90%
