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6.6.2 Nonoperating vibration
The disk drive withstands the following vibration levels without any loss or permanent damage.
6.6.2.1 Random vibration
The test consists of a random vibration applied in each of three mutually perpendicular axes for a duration
of 15 minutes per axis. The PSD levels for the test simulating the shipping and relocation environment is
shown below.
Hz
2.5
5
40
500
Note: Overall RMS (root mean square) level of vibration is 3.01 G rms.
Figure 30. Random Vibration PSD Profile Breakpoints (nonoperating)
6.6.2.2 Swept sine vibration
!
5 G (zero-to-peak), 10 to 500 to 10 Hz sine wave
!
0.5 oct/min sweep rate
!
25.4 mm (peak-to-peak) displacement, 5 to 10 to 5 Hz
6.6.3 Operating shock
The hard disk drive meets the criteria in the table below while operating under these conditions:
! The shock test consists of 10 shock inputs in each axis and direction for a total of 60.
! There must be a minimum of 3 seconds delay between shock pulses.
! The disk drive will operate without a hard error while being subjected to the following half-sine shock
pulse.
Model
60-GB model
all other models
Figure 31. Operating shock
The input level shall be applied to the normal disk drive subsystem mounting points used to secure the
drive in a normal system.
G
0.001
0.018
0.018
Duration of 2 ms
150 G
200 G
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
2
/Hz
0.03
Duration of 11 ms
35
15 G
15 G
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