Product manual

Specifications

Maxtor Atlas 10K IV 4-7

4.6 ACOUSTICS

Table 4-6 specifies the acoustical characteristics of the Maxtor Atlas 10K IV

hard disk drive. The acoustics is measured in an anechoic chamber with

background noise <25 dBA.

Table 4-6 Acoustical Characteristics—Sound Power per ISO 7779

1. The specifications for idle and operating acoustic noise as per ISO

Standard 7779, “Engineering Methods for Free Field Conditions Over a

Reflecting PLane.” All specifications are sound power level maximum

limits, A-weighted, referred to 1 picowatt as indicated in the standard. The

drive will be mounted for the test in the manufacturer’s defined nominal

position. The unit under test should be supported so that its bottom surface

in the test orientation is less than or equal to 6 centimeters from the

chamber floor, but not in contact with it. The unit should be supported with

small, compliant, well-damped blocks that rest on the floor.

2. The relationship between bels and dBA for sound power is 1 bel = 10dBA.

OPERATING MODE

SOUND POWER

(MEAN)

SOUND POWER

(MEAN + 3 SIGMA)

MAXTOR ATLAS 10K IV 36.8/73.6/147.1 GB

Idle On Track

36.8 GB

73.6 GB

147.1 GB

3.2 Bels (typical)

3.4 Bels (typical)

3.6 Bels

Seeking Random

36.8 GB

73.6 GB

147.1 GB

3.7 Bels (typical)

3.8 Bels (typical)

3.9 Bels

4.0 Bels