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Harman Multimedia - On Tour XTB - RTTE Test Report
2009 11138368 EMC
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Template 7-09aal
APPENDIX A
A. Radiated Emissions Measurement Uncertainties
1. Introduction
ISO/IEC 17025: 2005 and ANSI/NCSL Z540.1-1994 (R2002) require that all measurements contained in a test
report be “traceable”. “Traceability” is defined in the International Vocabulary of Basic and General Terms in
Metrology (ISO: 1993) as: “the property of the result of a measurement... whereby it can be related to stated
references, usually national or international standards, through an unbroken chain of comparisons, all having
stated uncertainties”.
The purposes of this Appendix are to “state the Measurement Uncertainties” of the conducted emissions and
radiated emissions measurements contained in Section 5 of this Test Report, and to provide a practical
explanation of the meaning of these measurement uncertainties.
2. Statement of the Worst-Case Measurement Uncertainties for the Conducted and Radiated Emissions
Measurements Contained in This Test Report
Table 1: Worst-Case Expanded Uncertainty "U" of Measurement for a k=2 Coverage Factor
Radiated Emissions Measurement Detection Systems
Applicable Frequency
Range
"U” for a k=2
Coverage Factor
Spectrum Analyzer with QPA & Preamplifier
30 MHz - 200 MHz
+3.9 dB, -4.0 dB
Spectrum Analyzer with QPA & Preamplifier
200 MHz-1000 MHz
+/- 3.5 dB
Spectrum Analyzer with Preamplifier
1 GHz - 18 GHz
+2.5 dB, -2.6 dB
Spectrum Analyzer with Preamplifier
18 GHz - 40 GHz
+/- 3.4 dB
NOTES:
1. Applies to 3 and 10 meter measurement distances
2. Applies to all valid combinations of Transducers (i.e. LISNs, Line Voltage Probes, and Antennas, as appropriate)
3. Excludes the Repeatability of the EUT
1. Applies to 3 and 10 meter measurement distances
2. Applies to all valid combinations of Transducers (i.e. LISNs, Line Voltage Probes, and Antennas, as appropriate)
3. Excludes the Repeatability of the EUT
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