IBM DTLA-305040 Hard Drive Specifications - Page 71

Operating shock

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7.8.2.1 Random vibration The test consists of a random vibration applied for each of three mutually perpendicular axes with the time duration of 10 minutes per axis. The PSD levels for the test simulate the shipping and relocation environment shown below. The overall RMS (Root Mean Square) level of vibration is 1.04G. Frequency G2/Hz 2 Hz 0.001 4 Hz 0.03 8 Hz 0.03 40 Hz 0.003 55 Hz 0.01 70 Hz 0.01 200 Hz 0.001 Figure 62. Random vibration PSD profile break points (nonoperating) 7.8.2.2 Swept sine vibration Ÿ 2 G (Zero to peak), 5 to 500 to 5 Hz sine wave Ÿ 0.5 oct/min sweep rate Ÿ 3 minutes dwell at two major resonances 7.8.3 Operating shock The drive meets the following criteria: Ÿ No error occurs with a 10 G half-sine shock pulse of 11 ms duration in all models. Ÿ No data loss occurs with a 30 G half-sine shock pulse of 4 ms duration in all models. Ÿ No data loss occurs with a 55 G half-sine shock pulse of 2 ms duration in models DTLA-307060/ 307075. Ÿ No data loss occurs with a 65 G half-sine shock pulse of 2 ms duration in models DTLA-307015/ 307020/307030/307045 and DTLA-305xxx. The shock test consists of ten shock inputs in each axis and direction for a total of 60. There must be a minimum of 30 seconds delay between shock pulses. The input level is applied to a base plate where the drive is attached with four screws. 7.8.4 Nonoperating shock The drive will operate with no degradation of performance after being subjected to shock pulses with the following characteristics. 7.8.4.1 Trapezoidal shock wave Ÿ Approximate square (trapezoidal) pulse shape Ÿ Approximate rise and fall time of pulse = 1 ms Ÿ Average acceleration level = 50 G. (Average response curve value during the time following the 1 ms rise time and before the 1 ms fall with a time "duration of 11 ms") Ÿ Minimum velocity change = 4.23 meters/second Deskstar 40GV & 75GXP hard disk drive specifications 59

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7.8.2.1
Random vibration
The test consists of a random vibration applied for each of three mutually perpendicular axes with the
time duration of 10 minutes per axis. The PSD levels for the test simulate the shipping and relocation
environment shown below.
The overall RMS (Root Mean Square) level of vibration is 1.04G.
0.001
0.01
0.01
0.003
0.03
0.03
0.001
G2/Hz
200 Hz
70 Hz
55 Hz
40 Hz
8 Hz
4 Hz
2 Hz
Frequency
Figure 62. Random vibration PSD profile break points (nonoperating)
7.8.2.2
Swept sine vibration
°
2 G (Zero to peak), 5 to 500 to 5 Hz sine wave
°
0.5 oct/min sweep rate
°
3 minutes dwell at two major resonances
7.8.3 Operating shock
The drive meets the following criteria:
°
No error occurs with a 10 G half-sine shock pulse of 11 ms duration in all models.
°
No data loss occurs with a 30 G half-sine shock pulse of 4 ms duration in all models.
°
No data loss occurs with a 55 G half-sine shock pulse of 2 ms duration in models DTLA-307060/
307075.
°
No data loss occurs with a 65 G half-sine shock pulse of 2 ms duration in models DTLA-307015/
307020/307030/307045 and DTLA-305xxx.
The shock test consists of ten shock inputs in each axis and direction for a total of 60. There must be a
minimum of 30 seconds delay between shock pulses. The input level is applied to a base plate where the
drive is attached with four screws.
7.8.4 Nonoperating shock
The drive will operate with no degradation of performance after being subjected to shock pulses with the
following characteristics
.
7.8.4.1
Trapezoidal shock wave
°
Approximate square (trapezoidal) pulse shape
°
Approximate rise and fall time of pulse = 1 ms
°
Average acceleration level = 50 G. (Average response curve value during the time following the 1 ms
rise time and before the 1 ms fall with a time "duration of 11 ms")
°
Minimum velocity change = 4.23 meters/second
Deskstar 40GV & 75GXP hard disk drive specifications
59