ACE-PT Scheme — Detailed Descriptions
Share |

ACE-PT Logo

 

ACE-PT Inc. ISO/IEC 17043-Accredited

EMC and Wireless/RF Proficiency Testing [PT] Program

PT Scheme Descriptions

Proficiency Testing is one of the key factors used by laboratory Accreditation Bodies (ABs) and regulators in determining the competency of EMC and Wireless/RF Test Laboratories.

ACIL’s Accredited EMC Proficiency Testing (PT) Programs have been specifically developed to address EMC and Wireless/RF Test Laboratories' needs to participate in one or more relevant Inter-Laboratory Comparison (ILC) “Round-robin” EMC and/or and Wireless/RF proficiency tests to satisfy:

  • Clause 5.9 of ISO/IEC 17025:2005 : “General requirements for the competence of testing and calibration laboratories” which specifically requires test laboratories to employ formal quality control procedures for monitoring the validity of tests, and, where practicable, that statistical techniques shall be applied to the reviewing of the results of tests. This same clause also states that a test laboratory can satisfy this requirement by participation in inter-laboratory comparison [ILC] proficiency-testing programs;
  • ILAC Policy ILAC-P9:06/2014 which makes the use of ILC-based proficiency-testing programs mandatory when they are relevant and commercially available.

ACE-PT Inc., a wholly-owned subsidiary of ACIL’s Independent Laboratory Institute [ILI], currently operates and administers ACIL’s ISO/IEC 17043-Accredited EMC and Wireless/RF PT Program. Both the ILI and ACE-PT Inc. are IRS 501(c)(3) non-profit institutions.

ISO/IEC 17043-accredited PT Schemes: Two schemes are currently available to participating EMC and Wireless/RF Test Laboratories that wish to evaluate their proficiency in making conducted and radiated emissions measurements. Each EMC and Wireless/RF PT Scheme operates on a perpetually ongoing basis using the “round-robin” approach, with the applicable test artifact being circulated successively from one participating EMC test laboratory to another.

Each PT Scheme is structured as follows:

Each PT Scheme is based upon the use of one specific serial-numbered PT Test Artifact that is continuously circulated in a "Round-robin" way (i.e., from one Participating Test Laboratory to the next, and so on), until PT measurement data from a minimum of 12 participants (but typically from 15 or more participants) have been collected. The measurements from these 12 to 18 participants define a "Round". [Note: Each EMC Test Lab Facility Location that participates can submit results from as many as four participants – i.e., up to four Test Operators at their physical location].

Upon completion of a “round”, the collected PT Measurement Data are statistically analyzed using the "Robust Analysis: Algorithm A" method detailed in ISO 13528:2015 Annex C Clause C.3 to determine the “assigned values”. Then, each participating Test Lab’s measurements are used to compute the corresponding performance statistics (i.e., D-Statistics or deviations, and Z-Scores or Standardized Errors). Next, the Performance Evaluations Parameters (Control Limits) are set using the applicable worst-allowable Measurement Uncertainty values published in CISPR 16-4-2:2011+AMD1:2014, and with the Uncertainty of the “assigned values” computed from the measurement data.

The analysis results of each “round” of the PT Program are afterwards summarized in tabular and graphical form and published in formal PT Analysis Reports within 30 days of the completion of that "Round". In each PT Analysis Report, the identities of each participating Test Laboratory Facility Location (and the identities of each Test Operator) are indicated only by a randomly generated “Lab Code”, thus ensuing confidentiality.

Each Participating Test Laboratory is provided with access to the PT Analysis Report or Reports that contain their PT Results. Additionally, these PT Analysis Reports can be made available (upon written request from a participating Test Laboratory), to their Laboratory Accreditation Body, and/or to regulators and/or clients.

Due to the very lengthy intervals between the completion of two successive "Rounds" for each PT Scheme, much of the value of participation in PT would be lost if each Participating Test Laboratory did not receive its PT Results very quickly. Recognizing this, in every case, ACE-PT Inc. provides each participating Test Laboratory with a formal Interim "Statement of Performance" Letter detailing their PT Results in 7 days or less after they have submitted their complete set of EMC PT Test Data to ACE-PT Inc. With prior arrangement, when necessary, 24 hour turnaround (expedited service) is available at no additional cost.

Registration and Pricing

Registration for each of ACE-PT Inc.'s PT Schemes is available separately, on a first come, first served basis. ACE-PT Inc.'s PT Schemes are available to participating EMC and/or Wireless/RF Test Laboratories located anywhere in the world. On-line registration is required.

All of the currently available ISO/IEC 17043-accredited PT Schemes offered by ACE-PT Inc. are priced identically, as follows:

Lab/Additional Participant Fees:

1st Participant (Test Operator) at a given Location $1,600
Additional Participants (2nd through 4th Participant at same Location) $300 (per additional 1 Participant)
One additional week at same Location (up to 4 Additional Participants) $1,200

Pre-payment of all fees is required in order to Register for any of ACE-PT Inc.'s PT Program Schemes. The preferred method of payment is by Credit Card (i.e., MasterCard, VISA, or American Express). If necessary, payment can be made by domestic or international wire transfer, with the participant being responsible for all fees associated with sending and receiving the wire transfers. All payments must be made in US Dollars.

Participants located in North America are responsible for the cost of shipping the PT Test Artifacts(s) onward (via express carrier - e.g., FedEx ®, UPS ®, DHL®, etc) to its next destination. Participants located outside of North America are responsible for the cost of shipping the PT Test Artifacts(s) both ways (via express carrier - e.g., FedEx®, UPS ®, DHL®, etc) from the point of origin to the next destination.

Available EMC and Wireless/RF PT Schemes

Currently Available PT Schemes:

  • ANSI C63.10-2013 / ANSI C63.4-2014 (150 kHz – 1 GHz) PT Scheme
  • ANSI C63.10-2013 / ANSI C63.4-2014 (1 GHz – 18 GHz) PT Scheme

ANSI C63.10-2013 / ANSI C63.4-2014
(150 kHz – 1 GHz) PT Scheme Summary

Test Artifact employed: York CNE III Broadband Noise Source.

This EMC PT Program requires the collection of a minimum of two and a maximum of six PT Data Sets, from a total of three different technical disciplines (i.e., Disciplines A, B and C), as follows:

A: ANSI C63.10-2013 Clause 6.7 Antenna Port Conducted Emissions:

  • Antenna Port Conducted Emissions Quasi-Peak measurements (from 150 kHz to 30 MHz);
  • Antenna Port Conducted Emissions Quasi-Peak measurements (from 30 MHz to 30 MHz).

B: ANSI C63.4-2014 Clause 8 Radiated Emissions at a 3 m measurement distance:

  • Radiated Emissions Quasi-Peak measurements from 30 MHz to 1 GHz at a 3 m distance in Horizontal Polarization;
  • Radiated Emissions Quasi-Peak measurements from 30 MHz to 1 GHz at a 3 m distance in Vertical Polarization.

C: ANSI C63.4-2014 Clause 8 Radiated Emissions at a 10 m measurement distance:

  • Radiated Emissions Quasi-Peak measurements from 30 MHz to 1 GHz at a 10 m distance in Horizontal Polarization;
  • Radiated Emissions Quasi-Peak measurements from 30 MHz to 1 GHz at a 10 m distance in Vertical Polarization.

All participating EMC Test Laboratories may submit PT Data from Discipline A. Depending upon a participating EMC Test Laboratory's facilities, they may choose to submit PT Data measured either at the 3 m distance (i.e., from Discipline B), or at the 10 m distance (i.e., from Discipline C), or at both the 3 m and 10 m distances (i.e., from Disciplines B and C).

ANSI C63.4-2014 / ANSI C63.10-2013
(1 GHz - 18 GHz) PT Scheme Summary

Test Artifact employed: W D Test Solutions EM-18 Spectrally-broadened Comb Generator

This EMC PT Program requires the collection of a minimum of two and a maximum of six PT Data Sets, from a total of two different technical disciplines (i.e., Disciplines D and E), as follows:

D: ANSI C63.10-2013 Clause 6.7 Antenna Port Conducted Emissions:

  • Direct Antenna Conducted Emissions PEAK measurements (from 1 GHz to 18 GHz);
  • Direct Antenna Conducted Emissions AVERAGE measurements (from 1 GHz to 18 GHz).

E: ANSI C63.4-2014 Clause 8 Radiated Emissions at a 3 m measurement distance:

  • Radiated Emissions PEAK measurements from 1 GHz to 18 GHz at a 3 m distance in Horizontal Polarization:
  • Radiated Emissions PEAK measurements from 1 GHz to 18 GHz at a 3 m distance in Vertical Polarization;
  • Radiated Emissions AVERAGE measurements from 1 GHz to 18 GHz at a 3 m distance in Vertical Polarization.

All participating EMC Test Laboratories may submit PT data from either or both Discipline D and Discipline E.

Test Artifacts

York CNE III (150 kHz to 1 GHz) Broadband Noise Source

The York Comparison Noise Emitter (CNE III) is a broadband noise source, which produces a continuous useful RF output from 150 kHz to 1 GHz. The York CNE III is powered from four user-supplied "C" Batteries, and provides a BNC-type RF Output connector used for example, for making Direct Antenna Conducted Emissions measurements. The supplied accessories include a top loaded circular monopole antenna that is used with the York CNE III for making Radiated Emissions measurements, a Transit Case, a detailed PT Program Instruction Manual, and a CD-ROM containing a Microsoft Excel ® 2007 Spreadsheet Template to be used for reporting the PT Test Measurements to ACE-PT Inc. The PT Program using this artifact is designed to determine proficiency of the participants in making ANSI C63.10-2013 / ANSI C63.4-2014 measurements from 150 kHz to 1 GHz.

WD Test Solutions EM-18 (1-18 GHz) Spectrally-broadened Comb Generator

The WD Test Solutions EM-18 is a spectrally-broadened comb generator, which produces useful comb-line RF outputs from 1 GHz to 18 GHz. The WD Test Solutions EM-18 is powered from a pair of internal (non-removable) rechargeable battery packs, and includes an SMA-type RF Output connector used for example, for making Direct Antenna Conducted Emissions measurements. The supplied accessories include a stub monopole antenna that is used with the York WD Test Solutions EM-18 for making Radiated Emissions measurements, a wall-mount-type Charger Unit (used to recharge the internal battery packs in the WD Test Solutions EM-18), a Transit Case, a detailed PT Program Instruction Manual, and a CD-ROM containing a Microsoft Excel ® 2007 Spreadsheet Template to be used for reporting the PT Test Measurements to ACE-PT Inc. The PT Program using this artifact is designed to determine proficiency of the participants in making ANSI C63.4-2014 / ANSI C63.10-2013 measurements from 1 GHz to 18 GHz.