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Verification & Inter-laboratory Correlation Testing for the EMC Laboratory

Verification & Inter-laboratory Correlation Testing for the EMC Laboratory. Kimball Williams Denso-DIAM. A2LA AUTOMOTIVE EMC LABORATORY ACCREDITATION PROGRAM (AEMCLAP) REQUIREMENTS February 2006 PROFICIENCY TESTING

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Verification & Inter-laboratory Correlation Testing for the EMC Laboratory

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  1. Verification & Inter-laboratory Correlation Testing for the EMC Laboratory Kimball Williams Denso-DIAM U/M-Dearborn: 7/18/2006

  2. A2LA AUTOMOTIVE EMC LABORATORY ACCREDITATION PROGRAM (AEMCLAP) REQUIREMENTS February 2006 PROFICIENCY TESTING Refer to the proficiency testing requirements for each of the test technologies listed in the AEMCLRP requirements document and also to the A2LA Proficiency Testing Requirements for Accredited Testing and Calibration Laboratories. U/M-Dearborn: 7/18/2006

  3. Verification testing serves two fundamental purposes: • Regular function checks of: • Equipment, • Software & • Procedures. • Data integrity check by the use of: • Historical records comparisons U/M-Dearborn: 7/18/2006

  4. Historical Data Records • Comparisons between earlier data sets and the most recent can be used to determine: • the long term, historical stability of the test system, and • the continuing effectiveness of the training of test engineers or technicians. U/M-Dearborn: 7/18/2006

  5. Verification Requirements: • Documented Test Plan • All accredited test methods • Initial tests: 3 week period • Minimum Repetition Every 4 years • Minimum 2/year (each year) • Maintain historical records U/M-Dearborn: 7/18/2006

  6. Philosophy: • Why? • Verify test setup – Before testing begins. • How Often: • Equipment setup • Major test sequence • Which Tests: • All • Especially important for tests with ‘uncontrolled’ variables. • Records: Historical / Graphical / SPC • Analysis: Jumps or Trends U/M-Dearborn: 7/18/2006

  7. Practical Considerations: • Easy & Un-intrusive setup • Rapid Test: Minimum impact on overall test time. • “Analog” data gathered from test instruments. • (Alternative artifacts and tests may need to be developed) U/M-Dearborn: 7/18/2006

  8. Practical Considerations : • Rapid Results: Immediate comparison with previous results. • Historical Record: Tabular, Graphical (XBar & Range Charts) • Artifacts: (One for each test, or group of tests.) U/M-Dearborn: 7/18/2006

  9. Inter Laboratory Correlation NOT: Who got it ‘right’? How close are we to the Mean? U/M-Dearborn: 7/18/2006

  10. Requirements: • Which Tests Need: (AEMCLAP) • Which Tests do not require: (‘Calibrated’ equipment & ‘close’ setups.) • How Often: 2 years/4years • Records: Immediate & Current • Provider Requirements: (ISO Guide 43) U/M-Dearborn: 7/18/2006

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