Table 37 Sinusoidal Shock Wave; Table 38 Rotational Shock - Hitachi CinemaStar P7K500 Specifications

5.8.2.2
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
5.8.3 Operating shock
The drive meets the following criteria while operating in the conditions described below. The shock test
consists of 10 shock inputs in each axis and direction for total of 60. There must be a delay between shock
pulses long enough to allow the drive to complete all necessary error recovery procedures.
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 70 G half-sine shock pulse of 2 ms duration.
5.8.4 Non-operating shock
The drive will operate with no degradation of performance after being subjected to shock pulses with the
following characteristics.
5.8.4.1 Trapezoidal shock wave
Approximate square (trapezoidal) pulse shape
Approximate rise and fall time of pulse is1 ms
Average acceleration level is 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 is 4.23 meters/second
5.8.4.2
Sinusoidal shock wave
The shape is approximately half-sine pulse. The figure below shows the maximum acceleration level and
duration.
Models
All models
All models

Table 37 Sinusoidal shock wave

5.8.5 Non-operating Rotational shock
All shock inputs shall be applied around the actuator pivot axis.
Duration
1 ms
2 ms

Table 38 Rotational Shock

HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
Accleration level (G)
350
150
53
Duration (ms)
2
11
2
Rad/sec
30,000
20,000