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Zeus
IOPS
3.5-Inch Fibre Channel Solid State Drive Product Manual Rev. 1.0 75
RADIO FREQUENCY EMISSIONS
The Zeus
IOPS
SSD has passed radiated emissions testing (10 meter chamber) with a minimum
margin of 4dB below the EN55022 radiated emissions limits in all applicable customer platforms,
without any required changes to the system platforms.
Emissions testing in a 3 meter chamber for over 1GHz per the FCC limit for Class B was performed
up to 2GHz with the -4dB margin relative to the FCC Class B limit.
In preparation for the new CISPR 22 standard change that may go into effect in the year 2007, the
drives will pass EMI tests up to the higher frequency of either 6GHz or the fifth harmonic of the highest
signal on the drive. This requirement is applicable to all products being qualified after this version is
released. The specification limits are listed in Table 42.
Table 42. EMI Specification Limits
RADIO FREQUENCY IMMUNITY REQUIREMENTS
This specification is targeted as part of the design for quality and reliability expectations and is not
part of the regulatory requirements. The SSDs meet the following radio frequency immunity
requirements:
• 3 V/m over frequency range of 80 MHz to 1 GHz
• The signal will be amplitude modulated with a 1KHz sine wave to a depth of 80%
• Failure criteria:
• More than 10% throughput degradation
• Test setup will follow the procedures in the customer’s HDD Radio Frequency
Immunity Characterization Requirements
EMI TEST SITE CORRELATION
STEC Inc. will only use EMI test sites that are currently correlated with the customer’s test facilities.
STEC Inc. will contact the customer’s engineering staff for the list of approved laboratories.
VERIFICATION SAMPLES
STEC Inc. will submit the three worst-case drives used to obtain the emissions test data previously
obtained from the customer’s test facilities for verification testing. The Regulator Engineer will use
these drive samples, and others among those submitted for qualification, for emissions verification in
the customer’s systems.
VERIFICATION TESTING
Verification testing will be performed by the customer’s Compliance Peripheral Group.
Class B 1 to 3 GHz is 50dB (uV/m) @ 3 m
Class B 3 to 6 GHz is 54dB (uV/m) @ 3 m