US ITE EMC Requirements

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US ITE EMC Requirements

• Ghery S. Pettit
• EMC Regulatory Compliance Manager
• Corporate Product Regulations Standards
• June 21, 2007

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Topics

• EMC Standards
• EMC Approval Processes
• FCC Enforcement

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EMC Standards
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Emissions Standards

• Title 47 CFR Part 15
• Power line conducted emissions limits
• 150 kHz to 30 MHz
• Equivalent to CISPR 22 limits
• Radiated emissions limits
• 30 MHz to as high as 40 GHz

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Radiated Emissions Limits - 1 GHz to 6 GHz
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Test Methods gt 1 GHz Key Differences

• Antenna height scans
• FCC 1 to 4 meters with antenna pointed at EUT
  in azimuth and elevation
• CISPR 22 no height scan unless EUT too tall to
  fit in beam width of the antenna, then only scan
  to top of EUT or 4 meters, whichever is lower
  (CISPR 16-2-3, section 7.3.6.1).
• Upper frequency limit (max clock gt 1 GHz)
• FCC 5th harmonic of highest clock or 40 GHz,
  whichever is lower
• CISPR 22 5th harmonic of highest clock or 6
  GHz, whichever is lower

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Test Methods gt 1 GHzKey Differences

• Test Environment
• FCC OATS or alternate site meeting NSA below 1
  GHz
• CISPR 22 reflection free environment as defined
  in section 8 of CISPR 16-1-4

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Immunity

• Immunity
• No requirements in the US
• Other countries
• CISPR 241997
• EN 550241998

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Testing in Thailand for US (FCC)
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FCC Approval Processes

• FCC has three possible approval processes
• Verification
• Certification
• Declaration of Conformity

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FCC Rules, Part 15.101(a)

• Lists authorization process required for various
  products
• Key products for ITE
• Class B PC or peripheral Cert or DoC
• CPU boards or internal PS Cert of DoC
• PC assembled from parts DoC
• Class B external PS Verification
• Other Class B devices Verification
• Class A digital devices Verification
• Intentional radiators (most) Certification

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Verification

• Any lab, anywhere
• Manufacturer must be satisfied lab meets FCC
  requirements
• No paperwork with FCC
• Appropriate label on product and text in manual
• Used mostly for Class A computing devices

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Certification

• FCC listed lab, anywhere
• Lab submits data on facilities and test equipment
• FCC approves and adds lab to list
• Submit application to Conformity Assessment Body
  working for FCC
• Receive Grant of Equipment Authorization from
  CAB, label product
• Used for Class B computing devices and low power
  radio transmitters

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Declaration of Conformity

• ISO/IEC 17025 accredited lab
• Lab in country where
• Government to government MRA
• e.g. FCC to 2nd country national regulator
• Lab accrediting body to lab accrediting body MRA
  acceptable to FCC
• NO MRA exists between the US and Thailand at this
  time
• No paperwork with FCC or CAB
• Label product

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FCC DoC Laboratory Accreditation

• 47CFR2.948(e) The accreditation of a laboratory
  located outside of the United States, or its
  possessions, will be acceptable only under one of
  the following conditions
• (1) If the accredited laboratory has been
  designated by a foreign designating authority and
  recognized by the Commission under the terms of a
  government-to-government Mutual Recognition
  Agreement/Arrangement or
• (2) If the laboratory has been recognized by
  the Commission as being accredited by an
  organization that has entered into an arrangement
  between accrediting organizations and the
  arrangement has been recognized by the
  Commission.

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Enforcement
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Market Surveillance

• FCC samples the market by various means
• Media advertising review
• Trade shows
• Store displays
• Interference complaints (rare)
• Competitor complaints
• FCC requires vendor to send sample for testing
• Vendor pays shipping both ways
• No cost to government

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Additional Information
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FCC Rules

• FCC web site http//www.fcc.gov
• US Government Printing Office web site
• Code of Federal Regulations
• FCC Rules are in Title 47 (Telecommunications)
• http//ecfr.gpoaccess.gov/cgi/t/text/text-idx?cec
  frtpl2Findex.tpl
• Select desired title in drop down menu and click
  Go
• Browse through the various parts to find what you
  need.

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Ghery S. Pettit, NCE Intel Corporation DP2-303 280
0 Center Drive DuPont, Washington 98327 USA 1
253 371-5515 ghery.pettit_at_intel.com
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