Hitachi IC25N040ATCS04-0 Specifications - Page 47

Vibration and shock

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6.6 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. 6.6.1 Operating vibration The drive will operate without a hard error while being subjected to the following vibration levels. 6.6.1.1 Random vibration The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels specified in C-S 1-9711-002 (1990-03) as V5L. The vibration test level for V5L is 0.67 G RMS (Root Mean Square). Random vibration PSD profile Breakpoint Hz G2/Hz 5 2.0 x E-5 17 1.1 x E-3 45 1.1 x E-3 48 8.0 x E-3 62 8.0 x E-3 65 1.0 x E-3 150 1.0 x E-3 200 5.0 x E-4 500 5.0 x E-4 Figure 28. Random vibration PSD profile breakpoints (operating) 6.6.1.2 Swept sine vibration 60-GB model All other models Swept sine vibration (zero to peak 5 to 500 to 5 Hz sine wave) 1 G (5-300 Hz) 1 G (300 Hz) - 0.33 G (350 Hz) 0.33 G (350-500 Hz) 1 G (5-500 Hz) Sweep rate (oct/min) 2.0 2.0 Figure 29. Swept sine vibration Hitachi Travelstar 60GH & 40GN hard disk drive specifications 34

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6.6 Vibration and shock
All vibration and shock measurements in this section are for drives without mounting attachments for sys-
tems. 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.
6.6.1 Operating vibration
The drive will operate without a hard error while being subjected to the following vibration levels.
6.6.1.1 Random vibration
The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels speci-
fied in C-S 1-9711-002 (1990-03) as V5L.
The vibration test level for V5L is 0.67 G RMS
(Root Mean
Square).
5.0 x E–4
500
5.0 x E–4
200
1.0 x E–3
150
1.0 x E–3
65
8.0 x E–3
62
8.0 x E–3
48
1.1 x E–3
45
1.1 x E–3
17
2.0 x E–5
5
G
2
/Hz
Hz
Random vibration PSD profile Breakpoint
Figure 28. Random vibration
PSD profile breakpoints (operating)
6.6.1.2 Swept sine vibration
2.0
1 G (5-500 Hz)
All other models
2.0
1 G (5-300 Hz)
1 G (300 Hz) - 0.33 G (350 Hz)
0.33 G (350-500 Hz)
60-GB model
Sweep rate
(oct/min)
Swept sine vibration
(zero to
peak 5 to 500 to 5 Hz sine wave)
Figure 29. Swept sine vibration
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
34