Relation to present CISPR Standards

Don Heirman

Sept. 2012 2 Copyright 2012

Relations between Old/New Standards

CISPR 13 (Receiver Emissions) and CISPR 22 (ITE Emissions) remain in place until withdrawn

CISPR 20 (Receiver Immunity) and CISPR 24 (ITE Immunity) remain in place until withdrawn

CISPR 32 takes the place of CISPR 13 and CISPR 22 CISPR 35 (not yet published) takes the place of CISPR 20 and

CISPR 24 ANSI C63.4 covers emission measurement procedures (not limits

which are given by the FCC). CISPR 22 contains most of what is in C63.4.

CISPR 32 has similar procedures to that in C63.4. Significant differences was covered in our day and a half workshop

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Major Standards Organizations

Don Heirman

Sept. 2012 4 Copyright 2012

Using IEC Standards

IEC standards are voluntary National administrations may reference or adopt or adapt these

standards for regulatory purposes Note “adaption” means that there may be modifications (common) to the IEC

standard made when converted. Certain countries immediately or near immediately adopt the latest

edition of a standard or adopt a totally new standard that is needed for their use

Other countries or regions presents a transition period which allows the present standard to continue to be used up to a point where the new or replacement standard is only allowed for use and existing standards are withdrawn.

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Sept. 2012 5 Copyright 2012

FCC using ANSI Standards

US Federal Communications Commission may reference or adopt or adapt these standards for regulatory purposes Note “adaption” means that the FCC may not accept all clauses in the

ANSI standards. There are no modifications per se but the FCC may have additional requirements on the same subject.

To formally have ANSI standards referenced, the FCC issues a Notice of Proposed Rule Making (NPRM) proposing adoption of a standard

Public comment is received and depending on acceptance of some or all of the public comments, either a Further NPRM is issued (when there are major changes in the rule making requiring another round of comments) or if the FCC is convinced what is needed after taking into account comments a Report and Order is issued which is then US Federal law

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Participation in Standards

Don Heirman

IEC Participation

Request technical advisor (TA) of the US National Committee of the IEC technical advisory group (TAG) to join the IEC committee of interest Dave Arnett is CISPR/I TA

TAG membership is voted by existing TAG members If voted to join, pay USNC participation fee Comment or provide technical input on subjects

currently being discussed in the IEC subcommittee for which the TAG is following

Join IEC working group and attend meetings or contribute inputs for other TAG members to present for you

Meetings are generally once a year

ANSI C63 Participation

Working group membership is open to all Submit request to WG chair

A one time fee may be assessed Active membership “rules” apply Expect technical contribution Membership does not mean being able to ballot on

standards Work largely done by electronic means

For more influence, join subcommittee; membership is voted by existing SC members

Main committee Does final balloting of standards Is comprised of organizations and single person companies Meetings are generally at least twice a year

Regulatory Implications

Don HEIRMAN

Source of FCC Measurement Procedures

What Measurement Procedures Should Be Used?

A number of measurement procedures have been identified and can be found in: FCC Rules Industry Standards Text of the Report and Order Public Notice Issued by the Commission Knowledge Database

See the FCC Measurement Techniques Web Page for a listing of measurement procedures: http://www.fcc.gov/oet/ea/eameasurements.html

FCC Flexibility in Referencing Standards

Section 2.947 provides options for the FCC to accept measurement procedures

The Commission will accept data which has been measured in accordance with the following standards or measurement procedures: Those set forth in bulletins or reports prepared by the

Commission's Office of Engineering and Technology. Those acceptable to the Commission and published by

national engineering societies such as the EIA, the IEEE, and ANSI.

Any measurement procedure acceptable to the Commission may be used to prepare data demonstrating compliance with the requirements of this chapter.

Use of CISPR 22 Limits

Revision of Part 15 of the Rules to Harmonize the Standards for Digital Devices with International Standards

ET Docket 92-152, September 17, 1993This rulemaking only allows for the use of CISPR 22

(third edition) limits as an alternative to the radiated emission limits in the frequency range 30 MHz to 1 GHz.

ET Docket 98-80 (FCC 02-157), May 30, 2002This rulemaking changed the FCC limits for line

conducted emissions to be the same as the CISPR limits.

Use of CISPR 22 Limits

Radiated Emission Limits Radiated emission limits in the range 30 MHz to

1 GHz may be used as alternative limits to limits in §15.109.

Section 15.109(g)“Digital devices may be shown to comply with the

standards contained in the Third Edition of CISPR Pub 22 (1997), “Information Technology Equipment – Radio Disturbance Characteristics – Limits and Methods of Measurement”

Measurement methods in C63.4-2003 are still required (§15.31)

Still subject to radiated emission limits in §15.109 above 1 GHz

Use of CISPR 22 Limits

Line Conducted Emissions Line conducted emissions measurement must

be made using U.S. power voltages and frequencies.

Measurement methods in C63.4-2003 are still required (§15.31)

§15.107(c) – Conducted EmissionsITE – Limits are the same for both FCC and CISPR 22

§18.307 – Conducted EmissionsConsumer ISM equipment (microwave ovens) – Limits

are the same for both FCC and CISPR 11

ANSI C63.4 Standard referenced by FCC

2.948(b) – Normalized Site Attenuation for radiated emissions test facility

2.948(d) – Declaration of conformity Tested by a recognized accredited testing laboratory Accredited to ISO/IEC 17025 with scope covering FCC

Part 15 and C63.4 Foreign testing laboratories subject to terms of a

government-to-government MRA

15.31 – Measurement standards for intentional and unintentional transmitters C63.4-2003 excluding 4.1.5.2, 5.7, and 9

Measurement Procedures

47 CFR 15.31(a)(6) specifies use of ANSI C63.4 (2003) for most intentional and unintentional radiators

Excluded sections: Clause 4.1.5.2 – Rod antennas not permitted Clause 5.7 – Artificial hand not permitted Clause 9 – Absorbing clamp not permitted Clause 14 –Click relaxation not permitted

C63.4-2009 Public Notice

FCC Recognizes C63.4-2009 and C63.10-2009 Public Notice, DA 09-2478, November

25, 2009 OET clarifies use of C63.4-2009 and

C63.10-2009 for compliance testing of intentional and unintentional radiators under Part 15

For more information

e-CFR – FCC Rules are available on line at: http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=

ecfr&tpl=%2Findex.tpl

Equipment Authorization Page http://www.fcc.gov/oet/ea/

Knowledge Database (KDB) https://apps.fcc.gov/oetcf/kdb/index.cfm Recent KDB publications Major guidance publications