copyright 2005 international emc standards activity 1 emc international standards update cispr sc a...

International EMC Standards Activity

1Copyright 2005


EMC International Standards Update

CISPR SC A and I ActivityDon Heirman

Don HEIRMAN Consultants


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Copyright 2005

Pub 16-1-1 CIS/A/554/CDV and 591/RVC:

Receiver specs to 18 GHz: No new requirements but concerns

raised if 1 MHz IF bandwidth selectivity is met with present instrumentation

Goal is to ensure that selectivity is met by current instrumentation used above 1 GHz

CDV passed; FDIS to be issued


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Pub 16-1-2

CIS/A/577/CDV and A/567/CC: LISN Specs. Measure magnitude and phase; include

rationale 40 dB isolation between phase and

neutral/ground If phase tolerance is exceeded, provides

ways to include fact in uncertainty budget


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Pub 16-1-4 CIS/A/565/CDV: Turntable, test

setup table and tower: Use NSA-type of measurements;

broadband antenna for 200-1000 MHz range only at this time

Covers “raised” turntable/tabletop combination

If floor standing product extends beyond any setup table, no need to perform test


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Pub 16-1-4 CIS/A/602/CDV: Site validation above 1

GHz: Uses VSWR method of comparing maximum

deviations for several antenna positions using both polarizations

Broadband transmit antenna E and H plane requirements stated and moved to illuminate sides of test volume

Receive antenna at normal position for making radiated emission measurements

Site VSWR must be less than or equal to 5 dB Alternate: Omnidirectional probe in test volume;

transmit antenna at receive antenna site


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CISPR A 16-1-4 Site validation above 1 GHz


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Pub 16-1-5 CISPR/A/454/Q and A/476/RQ:

Antenna Calibration Questionnaire results indicated that National

Committees preferred that E-field measurement forms the basis for compliance using properly calibrated common antennas

Maintenance project launched to implement Initially up to 1 GHz, but has application

over 1 GHz Proposal for at least one calibration procedure

due in October 2005 ANSI C63.5-2004 an interim possibility


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Pub 16-2-3 CIS/A/573/FDIS and A/585/RVD:

Measurement method > 1 GHz: No antenna “aiming” or “boresighting” No antenna height search if EUT contained

in receiving antenna beamwidth EUT rotated no more than 15 degree steps

Published


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CISPR A 16-2-3 Measurements above 1 GHz


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CISPR A 16-2-3 Measurements above 1 GHz


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Pub 16-2-3 CISPR/A/543/CD and A/571/CC:

Uniform Arrangement testing for radiated emissions and immunity

Chamber calibration (semi-anechoic) needs to satisfy “plane” and “volume” immunity and emission requirements, respectively Joint task force activity with SC77B No 61000-4-X number assigned yet CDV being prepared.


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CISPR A: Uniform ArrangementCISPR A: Uniform Arrangement


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CISPR A: Uniform Field CISPR A: Uniform Field CalibrationCalibration


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CISPR Subcommittee I

CISPR I documents citing work above 1 GHz CISPR I/105/CDV & I/161/RVD: Limits and

measurement methods 1-6 GHz CISPR I/106/CDV included 6-18 GHz-failed

Each reference: 16-1-1 for instrumentation 16-1-4 for antennas 16-1-4 for test site validation 16-2-3 for test method


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CISPR SC I Activities ITE Activity

Improvements of test setups Improvement of telecom port

measurements Control of common mode load

Measurement uncertainty in test reports

Definition of ITE with radio transmitter and/or reception function


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CISPR SC I Activities ITE Activity (CISPR 22)

CIS/I/145/NP & I/156/RVN: Power Line Communications (“almost” Broadband Access in the USA)

Should only radiated emission measurements be used for compliance below 30 MHz?

What impedance device should be used in the measurement?

Can the Longitudinal Conversion Loss (LCL) be quantified as this power line “load” is unbalanced?

A consensus was not achieved on a CDV and an NP was produced instead effectively starting over. Task group formed in SC I to come up with new proposal


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CISPR SC I Activities ITE and other product activity

Immunity of ITE for CISPR 24 Radiated immunity up to 6 GHz

Immunity of Receivers for CISPR 20

About to start maintenance activity Immunity work for new CISPR 29

Immunity testing for TV receivers—Objective picture assessment


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CISPR SC I Activities ITE and other product activity

Maintenance of CISPR 13 covering emissions from sound and TV broadcast receivers and associated equipment

Maintenance of CISPR 20 on immunity complements CISPR 13


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CISPR SC I Activities Multimedia Emissions—CISPR 32

To replace CISPR 22 and 13 Focus on products which will meet

Class B emission limits Draft being prepared to handle

Table top, Floor standing, Wall mounted

Home entertainment equipment Testing in a FAR Provide general test setups, not all


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Summary Much work internationally related to

activity above 1 GHz in CISPR Subcommittee A in its development of horizontal standards to be used by the product committees.

CISPR Pub 16-1-X, 16-2-X, and IEC 61000-4-20, 4-21, 4-22 (and others) are reposititory

Work in Subcommittee I makes use of SC A activity and covers ITE, multimedia, and receiver issues

For further information, contact the author

copyright 2005 international emc standards activity 1 emc international standards update cispr sc a...

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