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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.
5–22 Hz 0.081-inch displacement (peak to peak)
22–350 Hz 5 Gs acceleration (zero to peak)
1.9 Drive acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power
levels (no pure tones). All measurements are generally consistent with ISO
document 7779. Sound power measurements are taken under essentially
free-field conditions over a reflecting plane. For all tests, the drive is oriented
with the cover facing upward.
Mode
Typical sound
power (bels)
Maximum sound
power (bels)
Idle 3.7 4.1
Read/Write 4.3 4.5
1.10 Electromagnetic susceptibility
The drive operates without errors when subjected to the following:
Radiated noise
≤ 3 volt/meter, 30 Hz to 1 GHz
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.
1.11 Reliability
Nonrecoverable read errors 1 per 10
14
bits read, max
Mean time between failures 300,000 power-on hours
(nominal power, 25°C ambient
temperature)
Medalist 3240 and Medalist 2531 Product Manual, Rev. A 13