Electromagnetic Immunity; Reliability - Seagate Momentus XT Product Manual

*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 pro-
cess 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.
2.12

Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 6: Radio frequency environments
Test
Electrostatic discharge
Radiated RF immunity
Electrical fast transient
Surge immunity
Conducted RF immunity
Power Frequency H-field
immunity
Voltage dips, interrupts
2.13

Reliability

Measurement type
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Load/Unload (U/UL)
25°C, 50% relative humidity
32°C, 80% relative humidity
5°C, 80% relative humidity
5°C, 10% relative humidity
55°C, 16% relative humidity
Warranty
14
Description
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
± 1 kV on AC mains, ± 0.5 kV on external I/O
± 1 kV differential, ± 2 kV common, AC mains
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz
sine
1 A/m, 50Hz/60Hz, 3 axes
30% Reduction for 25 cycles
>95% Reduction for 250 cycles
>95%, 0.5 cycles
Specification
14
1 per 10 bits read, max.
0.5%
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
To determine the warranty for a specific drive, use a web browser to access the
following web page:
You will be asked to provide the drive serial number, model number (or part num-
ber) and country of purchase. After submitting this information, the system will dis-
play the warranty information for your drive
Performance
level
B
A
B
B
A
A
C
C
B
support.seagate.com/customer/warranty_validation.jsp
Momentus XT Product Manual, Rev. B
Reference
standard
EN 61000-4-2: 95
EN 61000-4-3: 96
ENV 50204: 95
EN 61000-4-4: 95
EN 61000-4-5: 95
EN 61000-4-6: 97
EN 61000-4-8: 97
EN 61000-4-11: 94