Seagate SV35 SERIES ST3500410SV - Manual (Page 23)

SV35 Series SATA Product Manual, Rev. D 15
2.9.6.2 Nonoperating vibration
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or
degradation in performance when subsequently put into operation are specified below.
2TB model
5Hz–22Hz 0.25 Gs (Limited displacement)
22Hz–350Hz 5.0 Gs
350Hz–500Hz 2.0 Gs
1TB and 500GB models
5Hz–22Hz 0.25 Gs (Limited displacement)
22Hz–350Hz 5.0 Gs
350Hz–500Hz 2.0 Gs
250GB models
5Hz–350Hz 5.0 Gs
350Hz–500Hz 1.0 Gs
2.10 Acoustics emissions
Drive emission of sound is measured consistent with the ECMA-74 and its referenced standards. Testing is con-
ducted at room temperature (approximately 25 degrees C). Emission levels are reported as the total A-weighted
sound power levels for, steady state, idle and active (seek) modes of operations.
[1] During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase
acoustic and power to operational levels.
Test for Prominent Discrete Tones (PDTs)
Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process
is the use of the absolute threshold of hearing. Seagate uses the lower limit for the threshold curve* to discern tone
audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to
Annex D of the ECMA-74 standards.
* Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies.
Table 6: Drive A-weighted Sound Power Levels (SWL, BA)
Idle [1] Seek
2000 GB
2.1 bels (typ)
2.3 bels (max)
2.3 bels (typ)
2.4 bels (max)
1000GB and 500GB models
2.7 bels (typ)
2.9 bels (max)
2.8 bels (typ)
3.0 bels (max)
250 GB model
2.5 bels (typ)
2.8 bels (max)
2.6 bels (typ)
2.8 bels (max)