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Medalist 6540, 5130 and 3220 Product Manual, Rev. A
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
Idle
Read/Write
1.10 Electromagnetic susceptibility
The drive operates without errors when subjected to the following:
Radiated noise
Electrostatic discharge*
Magnetic field strength
* 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
Mean time between failures
Contact start-stop cycles
Preventive maintenance
Typical sound
Maximum sound
power (bels)
power (bels)
3.7
4.1
4.4
4.7
3 volt/meter, 30 Hz to 500 MHz
10 KVolts
5 Gauss
14
1 per 10
bits read, max
300,000 power-on hours
(nominal power, 25°C ambient
temperature)
40,000 cycles
(at nominal voltage and temperature,
with 60 cycles per hour and a 40%
duty cycle)
None required
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