TR 102 273-2 : 1.2.1
Current
The latest, up-to-date edition.
ELECTROMAGNETIC COMPATIBILITY AND RADIO SPECTRUM MATTERS (ERM); IMPROVEMENT ON RADIATED METHODS OF MEASUREMENT (USING TEST SITE) AND EVALUATION OF THE CORRESPONDING MEASUREMENT UNCERTAINTIES; PART 2: ANECHOIC CHAMBER
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Foreword
1 Scope
2 References
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Introduction
5 Uncertainty contributions specific to an Anechoic
Chamber
5.1 Effects of the metal shielding
5.1.1 Resonances
5.1.2 Imaging of antennas (or an EUT)
5.2 Effects of the radio absorbing materials
5.2.1 Introduction
5.2.2 Pyramidal absorbers
5.2.3 Wedge absorbers
5.2.4 Ferrite tiles
5.2.5 Ferrite grids
5.2.6 Urethane/ferrite hybrids
5.2.7 Floor absorbers
5.2.8 Performance comparison
5.2.9 Reflection in an Anechoic Chamber
5.2.10 Mutual coupling due to imaging in the
absorbing material
5.3 Other effects
5.3.1 Extraneous reflections
5.3.2 Mutual coupling between antennas (or antenna
and EUT)
5.3.3 Turntable and antenna mounting fixtures
5.3.4 Antenna cabling
5.3.5 Positioning of the EUT and antennas
5.3.6 Equipment cabling
6 Verification procedure for an Anechoic Chamber
6.1 Introduction
6.2 Normalized site attenuation
6.2.1 NSA for the ideal Anechoic Chamber
6.2.2 Mutual coupling
6.3 Overview of the verification procedure
6.3.1 Apparatus required
6.3.2 Site preparation
6.3.3 Measurement configuration
6.3.4 What to record
6.4 Verification procedure
6.4.1 Procedure 1: 30 MHz to 1 000 MHz
6.4.2 Alternative Procedure 1: 30 MHz to 1 000 MHz
6.4.3 Procedure 2: 1 GHz to 12,75 GHz
6.5 Processing the results of the verification procedure
6.5.1 Introduction
6.5.2 Procedure 1: 30 MHz to 1 000 MHz
6.5.3 Procedure 2 (1 GHz to 12,75 GHz)
6.5.4 Report format
6.6 Calculation of measurement uncertainty (Procedure 1)
6.6.1 Uncertainty contribution, direct attenuation
measurement
6.6.2 Uncertainty contribution, NSA measurement
6.6.3 Expanded uncertainty of the verification procedure
6.7 Calculation of measurement uncertainty (Procedure 2)
6.7.1 Uncertainty contribution, direct attenuation
measurement
6.7.2 Uncertainty contribution, NSA measurement
6.7.3 Expanded uncertainty of the verification procedure
6.8 Summary
7 Test methods
7.1 Introduction
7.1.1 Site preparation
7.1.2 Preparation of the EUT
7.1.3 Standard antennas
7.1.4 Mutual coupling and mismatch loss correction
factors
7.1.5 Power supplies to the EUT
7.1.6 Restrictions
7.2 Transmitter tests
7.2.1 Frequency error (30 MHz to 1 000 MHz)
7.2.1.1 Apparatus required
7.2.1.2 Method of measurement
7.2.1.3 Procedure for completion of the results
sheets
7.2.1.4 Log book entries
7.2.1.5 Statement of results
7.2.2 Expanded uncertainty for frequency error test
7.2.3 Effective radiated power (30 MHz to 1 000 MHz)
7.2.3.1 Apparatus required
7.2.3.2 Method of measurement
7.2.3.3 Procedure for the completion of the
results sheets
7.2.3.4 Log book entries
7.2.3.5 Statement of results
7.2.4 Measurement uncertainty for effective radiated
power
7.2.4.1 Uncertainty contributions: Stage 1: EUT
measurement
7.2.4.2 Uncertainty contributions: Stage 2:
Substitution measurement
7.2.4.3 Expanded uncertainty of the ERP
measurement
7.2.5 Spurious emissions (30 MHz to 4 GHz or 12,75 GHz)
7.2.5.1 Apparatus required
7.2.5.2 Method of measurement
7.2.5.3 Procedure for completion of the results
sheets
7.2.5.4 Log book entries
7.2.5.5 Statement of results
7.2.6 Measurement uncertainty for Spurious emissions
7.2.6.1 Uncertainty contributions: Stage 1: EUT
measurement
7.2.6.2 Uncertainty contributions: Stage 2:
Substitution measurement
7.2.6.3 Expanded uncertainty of the spurious
emission
7.2.7 Adjacent channel power
7.3 Receiver tests
7.3.1 Sensitivity tests (30 MHz to 1 000 MHz)
7.3.1.1 Apparatus required
7.3.1.2 Method of measurement
7.3.1.3 Procedure for completion of the results
sheets
7.3.1.4 Log book entries
7.3.1.5 Statement of results
7.3.2 Measurement uncertainty for Receiver sensitivity
7.3.2.1 Uncertainty contributions: Stage 1:
Determination of Transform Factor
7.3.2.2 Uncertainty contributions: Stage 2:
EUT measurement
7.3.2.3 Expanded uncertainty of the receiver
sensitivity measurement
7.3.3 Co-channel rejection
7.3.4 Adjacent channel selectivity
7.3.5 Intermodulation immunity
7.3.6 Blocking immunity or desensitization
7.3.7 Spurious response immunity to radiated fields
(30 MHz to 4 GHz)
7.3.7.1 Apparatus required
7.3.7.2 Method of measurement
7.3.7.3 Procedure for completion of the results
sheets
7.3.7.4 Log book entries
7.3.7.5 Statement of results
7.3.8 Measurement uncertainty for Spurious response
immunity
7.3.8.1 Uncertainty contributions: Stage 1:
Transform factor
7.3.8.2 Uncertainty contributions: Stage 2:
EUT measurement
7.3.8.3 Expanded uncertainty of the spurious
response immunity measurement
Annex A: Bibliography
History
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