Datasheet

7.6.1.2 Operating swept sine vibration
y 1 G (Zero-to-peak), 5 to 500 to 5 Hz sine wave
y 2.0 oct/min sweep rate
7.6.2 Nonoperating vibration
7.6.2.1 Nonoperating random vibration
The test consists of a random vibration applied in each of three mutually perpendicular axes with a
15-minute duration per axis. The Power Spectral Density (PSD) levels for the test simulates the shipping
and relocation environment which is shown below.
0.018500
0.01840
0.035
0.0012.5
Power Spectral Density
(g
2
/Hz)
Frequency (Hz)
Note: Overall RMS level of vibration is 3.01 G RMS.
Figure 18. Random vibration PSD profile breakpoints (nonoperating)
7.6.2.2 Nonoperating swept sine vibration
y 5 G (zero-to-peak), 10 to 500 to 10 Hz sine wave
y 0.5 oct/min sweep rate
7.6.3 Operating shock
The drive meets the following criteria while operating under the conditions described as follows:
y The shock test consists of ten shock inputs in each axis and direction for a total of 60 shocks.
y There must be a minimum delay of 3 seconds between shock pulses. Soft errors and automatic
retries are allowed during the test.
y No data loss or permanent damage occurs during a 175 G half-sine shock pulse of 2 ms duration
and a 10-G half-sine shock pulse of 11 ms duration.
y The input level shall be applied to the normal disk drive subsystem mounting points of the device
into which it is installed, as mounted in normal system use.
7.6.4 Nonoperating shock
The disk drive must withstand with no damage a 120 G half-sine wave shock pulse of 11 ms duration and
a 1500 G half-sine wave shock pulse of 1 ms duration on six sides when heads are unloaded. (When the
power is not applied to the unit, the heads are automatically located on the unloaded position.)
All shocks shall be applied in each direction of the drive’s three mutually perpendicular axes, one axis at
a time. Input levels shall be measured at the frame of the disk drive. The input level shall be applied to
the device into which the Hitachi Microdrive is mounted. Through this device the operating shock is
imparted to the Hitachi Microdrive through the normal disk drive guide rails and connector retention
mountings of the device under test.
Hard disk drive specification for DSCM-11000/-10512/-10340
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