Compaq Deskpro 2000 - Manual (Page 215)

Compaq Deskpro 2000 Series of Personal Computers 8-13
Table 8-12
LS-120 Drive
Compaq Spare Part Number
Internal
External 263709-002
294158-001
Physical Characteristics
Height
Width
Length
Weight (w/eject motor) 1.00-in (25.4-mm)
4.00-in, (101.6-mm)
5.91-in (150.0-mm)
1.19-lb (540-gm)
Environmental Factors
Temperature
Relative humidity (non-condensing)
Wet bulb, max
Shock
Vibration
Altitude
Operating
50
°
F to 68
°
F (10
°
C to 45
°
C)
10% to 80%
84
°
F (29
°
C)
6 G, 11 msec, 1/2 sine
0.5 G pk swept sine, 10 Hz to 500 Hz
1,635 yd (1500 M)
Non-Operating
-22°F to 140°F (-30
°
C to 60
°
C)
5% to 95%
140 G, 2 msec, 1/2 sine
2.0 G pk swept sine, 10 Hz to 500 Hz
4,905 yd (4500 M)
Physical Configuration
Actuator type
Number of disks
Data surfaces
Data head assemblies
Tracking and positioning
Optical transducers Single stage, linear voice-coil
1
2
2
Continuous optical
1
Drive Performance
Disk rotational speed
Average latency
Average command overhead
Transfer rate to/from buffer
Load/unload cycles
Buffer size 720
±
3 revolutions per minute
42 ms
1 ms
4 MB/sec maximum
30,000
4 K
Specified Modes
Track to track seek time
Average seek time
Maximum seek time
Start time (power up)
Stop time
Transfer rate (to/from media) 25 ms
70 ms
150 ms
1 sec
1 sec
3.2 to 5.4 Mbits/sec
Acoustic Noise 47 dBA at 1 meter
Electromagnetic interference 6 Oersteds (max)