HP Compaq nc6400 Maintenance And Service Manual page 180

Specifications
DVD±RW and CD-RW Combo Drive (Continued)
Disc thickness
Track pitch
Access time
Random
Full stroke
Audio output level
Cache buffer
Data transfer rate
CD-R (16X)
CD-RW (8X)
CD-ROM (24X)
DVD (8X)
DVD-R (4X)
DVD-RW (2X)
Multiword DMA mode 2
Startup time
Stop time
6–6
Table 6-4
1.2 mm (0.047 in)
0.74 µm
CD
< 175 ms
< 285 ms
Audio-out, 0.7 Vrms
2 MB
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
< 15 seconds
< 6 seconds
DVD
< 230 ms
< 335 ms
Maintenance and Service Guide