Seagate SurveiSRS HDD Product Manual, Rev. D
17
www.seagate.com
2.11
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:
2.12
MTBF and Warranty
Bare drive warranty terms - 3-year coverage
The product will achieve a Mean Time Between Failure (MTBF) of 1,000,000 hours when operated in an
environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifications shown in
Environmental specifications
on page 15 may decrease the product MTBF. MTBF is a population statistics that is
not relevant to individual units.
MTBF specifications are based on the following assumptions for Surveillance environments:
• 8760 power-on-hours per year
• 10,000 average motor start/stop cycles per year
• Operations at nominal voltages
• Temperatures outside the specifications in
Environmental specifications
on page 15 may reduce the product
reliability.
• Normal I/O duty cycle for consumer electronics environments. Operation at excessive I/O duty cycle may
degrade product reliability.
The Surveillance environment of power-on-hours, temperature, and I/O duty cycle affect the product MTBF. The
MTBF will be degraded if used in an enterprise application.
Table 6
Radio frequency environments
Test
Description
Performance Level Reference standard
Electrostatic
discharge
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
B
EN61000-4-2: 95
Radiated RF
immunity
80MHz to 1,000MHz, 3 V/m,
80% AM with 1kHz sine
900MHz, 3 V/m, 50% pulse modulation @ 200Hz
A
EN61000-4-3: 96
ENV 50204: 95
Electrical fast
transient
± 1 kV on AC mains, ± 0.5 kV on external I/O
B
EN61000-4-4: 95
Surge immunity ± 1 kV differential, ± 2 kV common, AC mains
B
EN61000-4-5: 95
Conducted RF
immunity
150kHz to 80MHz, 3 Vrms, 80% AM with 1kHz
sine
A
EN61000-4-6: 97
Voltage dips,
interrupts
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
C
C
C
B
EN61000-4-11: 94
