Radiation Noise; Conductive Noise; Magnetic Fields; Table 14. Magnetic Flux Density Limits - Hitachi 7K100 - Travelstar - Hard Drive Specifications

2.5 inch ata/ide hard disk drive
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6.1.2 Radiation noise

The drive shall work without degradation of the soft error rate under the following magnetic flux density limits at
the enclosure surface.
Table 14: Magnetic flux density limits
Frequency (KHz)
0–60
61–100
101–200
201–400

6.1.3 Conductive noise

The disk drive shall work without soft error degradation in the frequency range from DC to 20 Mhz injected
through any two of the mounting screw holes of the drive when an AC current of up to 45 mA (p-p) is applied
through a 50-ohm resistor connected to any two mounting screw holes.

6.1.4 Magnetic fields

The disk drive will withstand radiation and conductive noise. The test method is defined in the Noise Susceptibility
Test Method specification, P/N 95F3944.
Limits (uT RMS)
500
250
100
50
Travelstar 7K100 Hard Disk Drive Specification
23

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