Hitachi travelstar hds723020bla642 用户手册
7K200 SATA OEM Specification
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6.5 Vibration and shock
All vibration and shock measurements in this section are for drives without mounting attachments for
systems. The input level shall be applied to the normal drive mounting points.
systems. The input level shall be applied to the normal drive mounting points.
Vibration tests and shock tests are to be conducted by mounting the drive to a table using the bottom four
mounting holes.
mounting holes.
6.5.1
Operating vibration
The drive will operate without a hard error while being subjected to the following vibration levels.
6.5.1.1 Random vibration
The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels below.
The vibration test level is 6.57 m/sec
The vibration test level is 6.57 m/sec
2
RMS
(Root Mean Square) (0.67 G RMS).
Random vibration PSD profile Breakpoint
Hz
m x 10n (m
2
/sec
4
)/Hz
5
1.9 x E–3
17
1.1 x E–1
45
1.1 x E–1
48
7.7 x E–1
62
7.7 x E–1
65
9.6 x E–2
150
9.6 x E–2
200
4.8 x E–2
500
4.8 x E–2
Table 17. Random vibration
PSD profile breakpoints (operating)
6.5.1.2 Swept sine vibration
Swept sine vibration (zero to peak 5 to
500 to 5 Hz sine wave)
500 to 5 Hz sine wave)
Sweep rate (oct/min)
9.8 m/sec
2
(1 G) (5-500 Hz)
1.0
Table 18. Swept sine vibration