S
EAGATE
L
APTOP
T
HIN
SSHD SATA P
RODUCT
M
ANUAL
, R
EV
. D
11
D
RIVE
S
PECIFICATIONS
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
A
COUSTICS
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.
2.10
E
LECTROMAGNETIC
I
MMUNITY
When properly installed in a representative host system, the drive operates without errors or degradation in performance
when subjected to the radio frequency (RF) environment as defined in
Table 7
.
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)
I
DLE
(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
.
P
ERFORMANCE
S
EEK
2.0 bels (typ)
2.2 bels (max)
2.2 bels (typ)
2.4 bels (max)
Table 7
Radio Frequency Environments
T
EST
D
ESCRIPTION
P
ERFORMANCE
L
EVEL
R
EFERENCE
S
TANDARD
Electrostatic discharge
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
B
EN 61000-4-2: 95
Radiated RF immunity
80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
A
EN 61000-4-3: 96
ENV 50204: 95
Electrical fast transient
± 1 kV on AC mains, ± 0.5 kV on external I/O
B
EN 61000-4-4: 95
Surge immunity
± 1 kV differential, ± 2 kV common, AC mains
B
EN 61000-4-5: 95
Conducted RF immunity
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine
A
EN 61000-4-6: 97
Power Frequency H-field
immunity
1 A/m, 50Hz/60Hz, 3 axes
A
EN 61000-4-8: 97
Voltage dips, interrupts
30% Reduction for 25 cycles
>95% Reduction for 250 cycles
>95%, 0.5 cycles
C
C
B
EN 61000-4-11: 94
