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SEAGATE LAPTOP SSHD SATA PRODUCT MANUAL, REV. D 10
DRIVE SPECIFICATIONS
2.8.1 Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may
be applied in the X, Y, or Z axis.
2.8.1.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 350 Gs
based on half-sine shock pulses of 2ms. Shocks should not be repeated more than one time per axis
2.8.1.2 Nonoperating shock
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when
subsequently put into operation is 800 Gs based on a nonrepetitive half-sine shock pulse of 2 ms duration.
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when
subsequently put into operation is 1000 Gs based on a nonrepetitive half-sine shock pulse of 1 ms duration.
2.8.2 Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws.
Vibration may be applied in the X, Y, or Z axis.
2.8.2.1 Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are
specified below.
2.8.2.2 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.
2.9 ACOUSTICS
Drive emission of sound is measured consistent with the ECMA-74 and its referenced standards. Testing is conducted at room
temperature (approximately 25°C). Emission levels are reported as the total A-weighted sound power levers for steady state, idle, and
active seeks modes of operation.
2.9.1 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.
5–200 Hz 2.0 Gs (0 to peak). Max displacement may apply below 10 Hz.
201–500 Hz 1.0 Gs (0 to peak).
5–500 Hz 5.0 Gs (0 to peak). Max displacement may apply below 22 Hz.
Table 6 Drive A-weighted Sound Power Levels (SWL, BA)
IDLE
(1)
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.
PERFORMANCE SEEK
2.2 bels (typ)
2.4 bels (max)
2.4 bels (typ)
2.6 bels (max)