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Medalist 17242, 13032, 10232, 8422 and 4312, Rev. A 13
1.8.6.2 Nonoperating vibration
The following table lists the maximum nonoperating vibration that the
drive may experience without incurring physical damage or degradation
in performance when subsequently put into operation.
1.9 Drive acoustics
Drive acoustics were measured as overall A-weighted acoustic sound
power levels (no pure tones). All measurements are generally consistent
with ISO document 7779. Sound power measurements were taken
under essentially free-field conditions over a reflecting plane. For all
tests, the drive was oriented with the cover facing upward.
For the Seek mode, the drive was placed in seek only. Currently for these
drives, the approximate number of seeks per second is 26.6. The number
of seeks per second is defined by the following equation:
Number of seeks per second = 0.4 / (average latency + average access time)
.
1.10 Electromagnetic susceptibility
The drive operates without errors when subjected to the following:
5–22 Hz 0.20-inch displacement (peak to peak)
22–350 Hz 5.0 Gs acceleration (zero to peak)
Mode
Typical sound
power (bels)
Maximum sound
power (bels)
Idle 3.3 3.8
Read/Write 3.7 4.1
Radiated noise ≤ 3 volt/meter, 30 Hz to 500 MHz
Electrostatic discharge* ≤ 10 KVolts
Magnetic field strength ≤ 5 Gauss
* Electrostatic discharge susceptibility is measured with the drive
mounted in a representative computer system (mounted to a ground
plane with earth grounding). Discharges are applied to the bezel or
other external surfaces on the ground plane.