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)
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