Seagate ST1000VX000 SV35 Series PATA Product Manual - Page 24

Acoustics

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2.10 Acoustics Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements are 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. Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation: (Number of seeks per second = 0.4 / (average latency + average access time) Drive acoustics, sound power Idle Operational, DVR (Digital Video Recorder) seeks 2.46 bels (typ) 2.65 bels (max) 2.8 bels (typ) 2.9 bels (max) 18 SV35 Series Product Manual, Rev. B

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18
SV35 Series Product Manual, Rev. B
2.10
Acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-
surements are 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.
Note.
For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined
by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Drive acoustics, sound power
Idle
Operational, DVR (Digital Video Recorder) seeks
2.46 bels (typ)
2.65 bels (max)
2.8 bels (typ)
2.9 bels (max)