Hard Drive Specifications
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... orientations. T1= equivalent time, in seconds, for the drive can be calculated as shown below . The mean of the sample of 40 drives is to be less than the typical value. A-weighted Sound Power DJSA-232 Idle Operating DJSA-230 Idle Operating DJSA-220/210/205 Idle Operating Typical (Bels) 2.5 3.5 2.8 3.5 ... formula only when determining compliance. Ns = 0.4/(Tt + T1) where: ! Lwt(spec) = Lw = 0.1Pt + 0.3 < 4.0 (Bels) Lw = A-weighted sound power level Travelstar 32GH/30GT/20GN hard disk drive specifications 37 Weighted sound power The background power levels of the acoustic test chamber for ...
... orientations. T1= equivalent time, in seconds, for the drive can be calculated as shown below . The mean of the sample of 40 drives is to be less than the typical value. A-weighted Sound Power DJSA-232 Idle Operating DJSA-230 Idle Operating DJSA-220/210/205 Idle Operating Typical (Bels) 2.5 3.5 2.8 3.5 ... formula only when determining compliance. Ns = 0.4/(Tt + T1) where: ! Lwt(spec) = Lw = 0.1Pt + 0.3 < 4.0 (Bels) Lw = A-weighted sound power level Travelstar 32GH/30GT/20GN hard disk drive specifications 37 Weighted sound power The background power levels of the acoustic test chamber for ...