Compaq nx7400 HP Compaq nx7300 and nx7400 Notebook PC Maintenance and Service - Page 161
Maintenance and Service Guide, Specifications, Disc thickness, Track pitch, Access time
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Specifications Table 6-5 DVD±RW and CD-RW Combo Drive (Continued) Disc thickness 1.2 mm (0.047 in) Track pitch 0.74 µm Access time CD DVD Random Full stroke < 175 ms < 285 ms < 230 ms < 335 ms Audio output level Audio-out, 0.7 Vrms Cache buffer 2 MB Data transfer rate CD-R (16X) CD-RW (8X) CD-ROM (24X) DVD (8X) DVD-R (4X) DVD-RW (2X) Multiword DMA mode 2 2,400 KB/s (150 KB/s at 1X CD rate) 1,200 KB/s (150 KB/s at 1X CD rate) 3,600 KB/s (150 KB/s at 1X CD rate) 10,800 KB/s (1,352 KB/s at 1X DVD rate) 5,400 KB/s (1,352 KB/s at 1X DVD rate) 2,700 KB/s (1,352 KB/s at 1X DVD rate) 16.6 MB/s Startup time < 15 seconds Stop time < 6 seconds 6-8 Maintenance and Service Guide
6–8
Maintenance and Service Guide
Specifications
Disc thickness
1.2 mm (0.047 in)
Track pitch
0.74 μm
Access time
CD
DVD
Random
Full stroke
< 175 ms
< 285 ms
< 230 ms
< 335 ms
Audio output level
Audio-out, 0.7 Vrms
Cache buffer
2 MB
Data transfer rate
CD-R (16X)
CD-RW (8X)
CD-ROM (24X)
DVD (8X)
DVD-R (4X)
DVD-RW (2X)
Multiword DMA mode 2
2,400 KB/s (150 KB/s at 1X CD rate)
1,200 KB/s (150 KB/s at 1X CD rate)
3,600 KB/s (150 KB/s at 1X CD rate)
10,800 KB/s (1,352 KB/s at 1X DVD rate)
5,400 KB/s (1,352 KB/s at 1X DVD rate)
2,700 KB/s (1,352 KB/s at 1X DVD rate)
16.6 MB/s
Startup time
< 15 seconds
Stop time
< 6 seconds
Table 6-5
DVD±RW and CD-RW Combo Drive
(Continued)