Gert, John,
The (United States) Federal Communications Commission's (FCC's) approach
to approvals of separately-sold personal computer (PC) motherboards is
described in Sections 15.32 and 15.102 of FCC 47 CFR Part 15, at
http://www.fcc.gov/oet/info/rules/part15/PART15_07-10-08.pdf
Paragraph 15.32(a)(1) says:
"Section 15.32 Test procedures for CPU boards and computer power
supplies.
Power supplies and CPU boards used with personal computers and for
which separate authorizations are required to be obtained shall be
tested as follows:
(a) CPU boards shall be tested as follows:
(1) Testing for radiated emissions shall be performed with the CPU
board installed in a typical enclosure but with the
enclosure's cover removed so that the internal circuitry is
exposed at the top and on at least two sides. ..."
The rest of this section goes into much more detail about the testing
requirements, and an alternative test configuration.
Paragraph 15.102(a) says:
"Section 15.102 CPU boards and power supplies used in personal
computers.
(a) Authorized CPU boards and power supplies that are sold as separate
components shall be supplied with complete installation
instructions. These instructions shall specify all of the
installation procedures that must be followed to ensure compliance
with the standards, including, if necessary, the type of enclosure,
e.g., a metal enclosure, proper grounding techniques, the use of
shielded cables, the addition of any needed components, and any
necessary modifications to additional components."
John Barnes KS4GL, PE, NCE, NCT, ESDC Eng, ESDC Tech, PSE, SM IEEE
dBi Corporation
216 Hillsboro Ave
Lexington, KY 40511-2105
(859)253-1178 phone
(859)252-6128 fax
[email protected]
http://www.dbicorporation.com/
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