Seagate ST1.2 - Series 8 GB Removable Hard Drive Product Manual page 19

2.8.6.1 Operating sweep sine vibration
The following lists the maximum operating sweep sine vibration levels that the drive may experience while
meeting the performance standards specified. It will consist of a forward and backward sweep from 5 Hz to
500 Hz to 5 Hz. The drive will operate without a hard error while being subjected to the following vibration
levels.
5 Hz to 500 Hz @ 2 oct/min
2.8.6.2 Operating random vibration
The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels specified in
the table below. The vibration test level is 0.67 Gs RMS. The drive will operate without a hard error while being
subjected to the following vibration levels.
Table 4: Operating random vibration profile
Frequency (Hz)
17
45
48
62
65
150
200
500
2.8.6.3 Nonoperating sweep sine vibration
The following table lists the maximum nonoperating sweep sine vibration levels that the drive may experience
while meeting the performance standards specified. It will consist of a forward and backward sweep from 5 Hz
to 500 Hz to 5 Hz. The drive will not incur any physical damage when subsequently put into operation.
5 Hz to 500 Hz @ 0.5 oct/min
ST1.2 Series Product Manual, Rev. B
1.0 Gs (0 to pk). Maximum displacement may apply below 10 Hz.
5.0 Gs (0 to pk). Maximum displacement may apply below 22 Hz.
G /Hz
2
1.1 x E-03
1.1 x E-03
8.0 x E-03
8.0 x E-03
1.0 x E-03
1.0 x E-03
5.0 x E-04
5.0 x E-04
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