ETSI - TS 103 051
Electromagnetic compatibility and Radio spectrum Matters (ERM); Expanded measurement uncertainty for the measurement of radiated electromagnetic fields
|Publication Date:||1 August 2011|
The present document presents an evaluation of maximum acceptable measurement uncertainty for Radio Frequency (RF) electromagnetic field (emf) measurements for the frequency range from 30 MHz to 100 GHz for inclusion within ETSI documents on radio products used for compliance testing.
The maximum acceptable expanded measurement uncertainty is given for the following measurement parameters:
• radiated RF power;
• radiated unwanted emissions in the spurious domain; and
• EMC radiated emissions.
The maximum frequency specifications are based upon current capabilities of measurement equipment at April 2011 and the ability to calculate expanded measurement uncertainty from traceable calibration certificates. Frequencies above the specified maximum frequency for each method of measurement are for further study.
A specification is given on how to apply the laboratory calculated expanded measurement uncertainty to a measured parameter and to assess the quality of the measurement against a defined limit given in a standard.
In determining the maximum acceptable expanded measurement uncertainty, particular account has been taken of current methods of measurement already identified in ETSI standards. However where there is an inconsistency, or uncertainties that have not previously been taken into account in the uncertainty budgets, these are clearly identified in the relevant clauses.
Fixed link microwave methods of measurement do not use radiated measurements except for EMC and antennae characteristics testing. All other measurements are performed using conducted measurements. Therefore they are considered not to be covered by the present document. However, as new technologies with integral antennas are being developed, this may be reviewed in a future edition.
Satellite equipment is not covered by the present document; however, this may be reviewed in a future edition.
The expanded measurement uncertainty for conducted measurements is not covered by the present document.
The use of a test jig for radiated RF measurements of integral antenna radio equipment is not covered by the present document.