![background image](http://html1.mh-extra.com/html/ibm/ic35l020-deskstar-20-gb-hard-drive/ic35l020-deskstar-20-gb-hard-drive_specifications_3938692070.webp)
9.6.4.2 Sinusoidal shock wave
The shape is approximately a half-sine pulse. The following table shows the maximum acceleration level
and duration.
2
(2 disks)
400
2
(1 disk)
400
2
(3 disks)
350
11
75 (all models)
Duration (ms)
Acceleration level (G)
Figure 55. Sinusoidal shock wave
9.6.5 Rotational shock
All shock inputs shall be applied around the actuator pivot axis.
20,000
2
30,000
1
Rad/s
2
Duration (ms)
Figure 56. Rotational Shock
9.7 Acoustics—Unit Sound Power level testing
The sound power emission levels are measured in accordance with ISO 7779. The upper limit criteria of
the octave sound power levels are given in Bels relative to one pico watt and are shown in the following
table.
3.5
3.2
3.5
3.1
3.5
3.1
Quiet seek mode
3.7
3.4
3.7
3.4
3.7
3.4
Performance seek
mode
Operating
3.4
3.1
3.4
3.0
3.4
3.0
Idle
Max.
(Bel)
Typical
(Bel)
Max.
(Bel)
Typical
(Bel)
Max.
(Bel)
Typical
(Bel)
Mode
3
2
1
Number of disks
Figure 57. Sound power levels
Deskstar 60 GXP Hard disk drive specification
56
Содержание IC35L020 - Deskstar 20 GB Hard Drive
Страница 2: ...IBM storage products official published specification...
Страница 10: ...This page intentionally left blank...
Страница 14: ...This page intentionally left blank...
Страница 16: ...This page intentionally left blank...
Страница 18: ...This page intentionally left blank...
Страница 19: ...Part 1 Functional specification Deskstar 60 GXP Hard disk drive specification 5...
Страница 20: ...This page intentionally left blank...
Страница 22: ...This page intentionally left blank...
Страница 30: ...This page intentionally left blank...
Страница 32: ...This page intentionally left blank...
Страница 34: ...This page intentionally left blank...
Страница 36: ...This page intentionally left blank...
Страница 38: ...This page intentionally left blank...
Страница 74: ...This page intentionally left blank...
Страница 75: ...Part 2 Interface specification Deskstar 60 GXP Hard disk drive specification 61...
Страница 76: ...This page intentionally left blank...
Страница 78: ...This page intentionally left blank...
Страница 80: ...This page intentionally left blank...
Страница 88: ...This page intentionally left blank...
Страница 206: ...This page intentionally left blank...