This International Standard applies to measurements of electromagnetic fields from operational transmitting equipment to ensure that the transmissions do not constitute a potential hazard to workers or to the general public. The purpose of this standard is to promote a common understanding of technical requirements and precautions necessary for the accurate measurement of electromagnetic fields carried out in conjunction with relevant national exposure regulations. This standard covers transmissions in the frequency range 100 kHz to 1 GHz. NOTE – Possible extension of this frequency range up to 2 GHz or 3 GHz will be investigated. This International Standard does not specify limiting values for exposure as these are usually given in exposure standards issued by responsible health authorities. This standard is, therefore, intended to be used in conjunction with the relevant national standards or regulations applicable in the country concerned. In the absence of any national rules restricting exposure to radiofrequency electromagnetic fields, the recommendations of the International NonIonizing Radiation Committee (INIRC) may be followed. The 1988 INIRC recommendations on exposure limits are summarized in annex A.