Travelstar 4K120 Hard Disk Drive Specification
34
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.Vibration tests and shock tests are to be conducted
by mounting the drive to a table using the bottom four 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
2
RMS (Root Mean Square) (0.67 G RMS).
6.5.1.2 Swept sine vibration
Table 22: Random vibration PSD profile breakpoints (operating)
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
4.8x E–2
500
4.8 x E–2
Table 23: Swept sine vibration
Swept sine vibration
(zero to peak 5 to 500 to 5 Hz sine wave)
Sweep rate (oct/min)
9.8 m/sec
2
(1 G) (5-500 Hz)
1.0
Summary of Contents for HTS421210H9AT00
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