6-16
Compaq Professional Workstation SP750 Maintenance and Service Guide
Table 6-12
DVD-ROM Drive
continued
Performance
Specifications
Bus rate
16.6 MB/s (burst) with DMA support
Cache/Buffer
256 KB (Minimum)
Start-up Time
< 10 seconds (typical)
Stop time
< 3 seconds (typical)
Error rates
10
-15
(soft error)
10
-20
(hard error)
10
-6
(seek error)
Reliability
35,000 POH, 25% (MTBF)
30 minutes (MTTR)
>20, 000 drawer in/out cycles
>5 x 10
6
full stroke seeks
Indicators
Busy LED (amber or green)
Audio Interface
Specifications
Line out connector
RMS output voltage
0.7 Vrms (typical)
S/N ratio
85 dB (minimum)
Channel separation
65 dB (minimum)
THD & noise
0.1% @ 1 KHz
Frequency response
20 to 20 KHz, ±2 dB
Electrical
Specifications
DC input power requirements
5 VDC ± 5%,
100 mV ripple p-p
12 VDC ± 5%,
200 mV ripple p-p
DC Current:
5 VDC
350 mA (typical)
<800 mA (maximum)
<100 mA (low power mode)
<10mA (sleep mode)
12 VDC
<500 mA (hold)
<1000 mA (seek, spin-up)
100 mA (low power mode)
<1mA (sleep mode)
