Compaq dc7800 manual Access time Random DVD

QuickSpecs

HP Compaq dc7800 Business PC

Technical Specifications - Optical Storage

Power

Audio output level

Environmental (all conditions non- condensing)

Cache Buffer	2 MB (minimum)
Data Transfer Modes	ATA PIO mode 4); ATA Multi-word DMA
	mode 2; ATA UltraDMA mode 0; ATA
	UltraDMA mode 1, mode 2; ATA UltraDMA
	Mode 3 (default)
Source	Four-pin, DC power receptacle
DC Power Requirement5 VDC ± 5%-100 mV ripple p-p
DC Current	5 VDC (< 1000 mA typical, < 1600 mA
	maximum)
Total Drive Power	< 2.5 Watt
(standby mode)
0.7 Vrms (typical)
Temperature	41° to 122° F (5° to 50° C)
Relative Humidity	5% to 85%
Maximum Wet Bulb	86° F (30° C)
Temperature (operating)

PATA DVD-ROM Slim Drive

Height	12.7mm
Orientation	Either horizontal or vertical
Interface type	PATA/ATAPI

Dimensions (W x H x D) 5.0 x 0.5 x 5.0 in (128 x 13.6 x 129 mm)

Weight (max)	0.42 lb (190 g)
Read speeds	DVD+R/-R/+RW/	Up to 4X
	-RW/+R DL /-R DL
	DVD-ROM	Up to 8X
	CD-ROM, CD-R	Up to 24X
	CD-RW	Up to 24X
Access time	Random DVD	DVD: < 140 ms (typical), CD: < 125 ms
(typical reads, including		(typical)
settling)	Random CD	DVD: < 250 ms (seek), CD: < 210 ms (seek)
	Data Transfer Modes	ATA PIO mode 4 (16.7 MB/s); ATA Multi-word
		DMA mode 2 (16.7 MB/s)
Power	Source	Four-pin, DC power receptacle
	DC Power Requirement5 VDC ± 5%-100 mV ripple p-p
	DC Current	5 VDC - <1000 mA typical, < 1600 mA
		maximum
	Total Drive Power	< 2.5 Watt
	(standby mode)

Audio output

Environmental (all conditions non- condensing)

Line-Out	0.7 VRMS
Signal-to-Noise Ratio	74 dB
Channel Separation	65 dB
Temperature	41° to 122° F (5° to 50° C)
Relative Humidity	5% to 85%
Maximum Wet Bulb	86° F (30° C)
Temperature (operating)

DA - 12744 Worldwide QuickSpecs — Version 13 — 12.14.2007 Page 44