HP DC71XX, DX61XX Table, Optical Drive Specifications

System Overview

Table 2-10

Optical Drive Specifications

Parameter	48x CD-ROM	48/24/28x CD-RW Drive
Interface Type	IDE	IDE
Media Type (reading)	Mode 1,2, Mixed Mode, CD-DA,	Mode 1,2, Mixed Mode, CD-DA,
	Photo CD, Cdi, CD-XA	Photo CD, Cdi, CD-XA
Media Type (writing)	N/a	CD-R, CD-RW
Transfer Rate (Reads)	4.8 Kb/s (max sustained)	CD-ROM, 4.8 Kb/s;
		CD-ROM/CD-R, 1.5-6 Kb/s
Transfer Rate (Writes):	N/a	CD-R, 2.4 Kbps (sustained);
		CD-RW, 1.5 Kbps (sustained);
Capacity:		650 MB @ 12 cm
Mode 1, 12 cm	550 MB
Mode 2, 12 cm	640 MB
8 cm	180 MB
Center Hole Diameter	15 mm	15 mm
Disc Diameter	8/12 cm	8/12 cm
Disc Thickness	1.2 mm	1.2 mm
Track Pitch	1.6 um	1.6 um
Laser
Beam Divergence	+/- 1.5 °	53.5 + 1.5°
Output Power	0.14 mW	53.6 0.14 mW
Type	GaAs	GaAs
Wave Length	790 +/- 25 nm	790 +/- 25 nm
Average Access Time:
Random	<100 ms	<120 ms
Full Stroke	<150 ms	<200 ms
Audio Output Level	0.7 Vrms	0.7 Vrms
Cache Buffer	128 KB	128 KB

2-32 361834-002 Technical Reference Guide