Interpretations and Explanations Processed by C63®

(Revision date: 8 January 2021)

The Interpretations below have been processed by ASC-C63® per its operating procedures, as outlined in Clause 11.  Requests for Interpretations must be directed to the Secretary of ASC-C63®. Remaining questions about the processing of Interpretation Requests should be directed to the ASC-C63® Secretariat; which is the IEEE, Jennifer Santulli.  Contact information for the ASC-C63® leadership is available at http://www.c63.org/documents/rosters_public/c63_officers_list.htm.

Standard

Type

Date

SC

Description

 

 

 

 

 

C63.2-2009

Interpretation

July 2012

SC1

SA above 1 GHz

C63.2-1996

Explanation

2007

SC1

Average value vs RMS value

 

 

 

 

 

C63.4-2014

Interpretation

Jan 2021

SC1

C63.4 (2014) Clause 8.2.3 measurement ant. distance

C63.4-2014

Interpretation

June 2019

SC1

C63.4 (2014) Annex N vs. C63.5 re/ symmetry

C63.4-2014

Interpretation

June 2019

SC1

C63.4 (2014) Clauses 5.5.1 & 8.2.4 sVSWR

C63.4-2014

Interpretation

June 2019

SC1

C63.4 (2014) Annex N.1 antenna symmetry

C63.4-2014

Interpretation

Dec 2018

SC1

Clause 4.5 Horn antenna aperture

C63.4-2014

Interpretation

Dec 2017

SC1

Annex_N_1b2_antenna_symmetry

C63.4-2014

Interpretation

Mar 2017

SC1

Clause_5_5_1a1_and_fig6_site_validation

C63.4-2014

Interpretation

Feb 2017

SC1

Annex D.3 Horizontal Polarization

C63.4-2014

Interpretation

Aug 2016

SC1

Clause_4_4&5_6_In_situ_LISN_use

C63.4-2014

Interpretation

July 2016

SC1

Clause 5.4.1 & 5.4.2 RSM / NSA

C63.4-2014

Interpretation

May 2016

SC1

Annex N.4.3 use of attenuators

C63.4-2014

Interpretation

Apr 2016

SC1

Double ridge horn aperture

C63.4-2014

Interpretation

Jan 2016

SC1

Clause 4.5.1 CISPR or ANSI antenna calibration

C63.4-2014

Interpretation

Jan 2016

SC1

Clause 5.5.1 Absorber height

C63.4-2014

Interpretation

Jan 2016

SC1

Annex D3_2_NSA_for_alternate_sites

C63.4-2014

Interpretation

Nov 2015

SC1

NSA_for_alternate_test_sites_Annex_D_4

C63.4-2014

Interpretation

Aug 2015

SC1

NSA phase center of antenna

C63.4-2014

Interpretation

July 2015

SC1

Site validation distance

C63.4-2014

Interpretation

June 2015

SC1

Exploratory emissions Clause 8.3.1.2

C63.4-2014

Interpretation

May 2015

SC1

Antenna Symmetry Annex N.1

C63.4-2014

Interpretation

May 2015

SC1

NSA Measurement Annex D.3

C63.4-2014

Interpretation

May 2015

SC1

NSA Measurement Annex D.2

C63.4-2014

Interpretation

Oct. 2014

SC1

NSA_Schwarzbeck

C63.4-2009

Interpretation

June 2015

SC1

Testing large TVs as floor standing

C63.4-2009

Interpretation

Apr 2015

SC1

LISN Receptacle Distance

C63.4-2009

Interpretation

Jan 2015

SC1

LISN_vertical_plane_w_absorber

C63.4-2009

Interpretation

Jan 2015

SC1

Text takes precedence over figures

C63.4-2009

Interpretation

June 2012

SC1

GP around turntable

C63.4-2009

Explanation

Mar 2012

SC1

Use of spectrum analyzer

C63.4-2009

Explanation

Mar 2012

SC1

Use of hybrid antenna 30-1000 MHz

C63.4-2009

Explanation

Jan 2012

SC1

Spectrum-analyzer requirements

C63.4-2009

Explanation

Oct 2011

SC1

Measurement of ceiling-mounted devices

C63.4-2009

Explanation

June 2011

SC1

Antenna Pattern Maximization

C63.4-2009

Explanation

June 2011

SC1

Antenna Factor

C63.4-2009

Explanation

June 2011

SC1

Site Validation

C63.4-2009

Explanation

May 2011

SC1

Use of term “passive loop” in C63.4

C63.4-2009

Explanation

Feb 2011

SC1

Cone of radiation

C63.4-2009

Explanation

Oct 2010

SC1

Use of LISN extension cord

C63.4-2009

Explanation

Oct 2010

SC1

LISN tolerance

C63.4-2009

Explanation

Aug 2010

SC1

Calibration interval

C63.4-2009

Explanation

May 2010

SC1

Use of hybrid antenna above 1 GHz

C63.4-2009

Interpretation

Mar 2010

SC1

1 GHz site validation interval

C63.4-2009

Interpretation

Mar 2010

SC1

C63.5-2006 applied to C63.4-2009

C63.4-2009

Interpretation

Mar 2010

SC1

LISN calibration (diagram)

C63.4-2003

Explanation

Feb 2005

SC1

Use of absorber material above 1 GHz

C63.4-2003

Explanation

Feb 2005

SC1

On-site vs off-site calibration of LISNs

C63.4-2003

Explanation

Jan 2005

SC1

Requirements for testing table-top devices

C63.4-2003

Explanation

Dec 2004

SC1

Use of IEEE Std. 213-1987

C63.4-2003

Explanation

Oct 2004

SC1

Use of C63.5 only for antenna calibration

C63.4-2003

Explanation

Oct 2004

SC1

Location of monitor display

C63.4-2003

Explanation

2004

SC1

Exercising EUT during testing

 

 

 

 

 

C63.5-2017

Interpretation

Sept 2020

SC1

C63_5_2017_Clause_J.2.1.2(d)_ground_plane_size

C63.5-2017

Interpretation

Nov 2017

SC1

C63_5_2017_Clause_5_1_1e_attenuator_selection

C63.5-2017

Interpretation

Oct 2017

SC1

C63_5_2017_Clause_4_4_3_Rx_antenna_scan_height_R1

C63.5-2006

Interpretation

Jan 2018

SC1

C63_5 2006 Annex H Antennas for NSA

C63.5-2006

Interpretation

Mar 2016

SC1

C63_5_2006_Annex_A_A_1_formula

C63.5-2006

Interpretation

July 2014

SC1

C63_5_2006_07_07_2014_200MHz_null.pdf

C63.5-2006

Interpretation

June 2014

SC1

C63_5_2006_06_17_2014_horn_height.pdf

C63.5-2006

Explanation

Dec 2013

SC1

C63_5_2006_12_3_2013_symmetry.pdf

C63.5-2006

Explanation

Dec 2012

SC1

C63.5_11DEC2012_H2%20SACS_req.pdf

C63.5-2006

Explanation

Dec 2012

SC1

C63 5_04DEC2012_SSMonOATS

C63.5-2006

Interpretation

Dec 2012

SC1

C63_5_Interp_2012_09_SSM_AUC_location

C63.5-2006

Interpretation

Aug 2012

SC1

C63.5_interp_SACS_req_freq_range_Aug2012

C63.5-2006

Explanation

June 2012

SC1

Schwarzbeck antennas as reference antenna method antenna

C63.5-2006

Explanation

June 2012

SC1

SACS requirement

C63.5-2006

Explanation

May 2012

SC1

Effective date of explanations on C63 standards

C63.5-2006

Explanation

Oct 2011

SC1

Hybrid antenna calibration / LP above 1 GHz

C63.5-2006

Explanation

Oct 2011

SC1

Reference antenna / Roberts[1]

C63.5-2006

Explanation

Apr 2011

SC1

Annex A equation

C63.5-2006

Explanation

Apr 2011

SC1

Use of hybrid antennas for NSA

C63.5-2006

Explanation

Sept 2010

SC1

EMC labs calibrating own antennas allowed

C63.5-2006

Explanation

July 2010

SC1

Use of semi-anechoic chamber for determining GCSF - #2

C63.5-2006

Interpretation

June 2010

SC1

Annex A equation

C63.5-2006

Explanation

May 2010

SC1

Use of hybrid antenna above 1 GHz

C63.5-2006

Interpretation

May 2010

SC1

Use of linear extrapolation for bicon antenna correction factors

C63.5-2006

Explanation

May 2010

SC1

Use of semi-anechoic chamber for determining GCSF - #1

C63.5-2006

Explanation

May 2009

SC1

Use of Schwarzbeck dipoles[2]

C63.5-2004

Explanation

Sep 2005

SC1

Use of free-space antenna factor

 

 

 

 

 

C63.10-2013

Interpretation

Apr 2015

SC4

Clause_6_4_6_Loop_orientation_v2

C63.10-2013

Interpretation

Nov 2015

SC4

Millimeter wave procedures

C63.10-2013

Interpretation

June 2015

SC4

Definition of “plot”

C63.10-2009

Interpretation

Apr 2010

SC4

Error including peak excursion limit in C63.10

 

 

 

 

 

C63.19-2011

Interpretation

July 2012

SC8

MIF and operating mode for LTE

C63.19-2011

Interpretation

July 2012

SC8

T coil audio levels for LTE

C63.19-2011

Interpretation

July 2012

SC8

Concurrent transmitters

C63.19-2011

Interpretation

July 2012

SC8

Simultaneous transmitters

C63.19-2007

Interpretation

Mar 2008

SC8

Separation distances correction

 



[1] Superseded by explanation June 2012, Schwarzbeck antennas as reference antenna method antenna

 

[2] Superseded by explanation June 2012, Schwarzbeck antennas as reference antenna method antenna