IEEE Standards Association
IEEE STANDARD
139-1988 - IEEE Recommended Practice for the Measurement of Radio Frequency Emission from Industrial, Scientific, and Medical (ISM) Equipment Installed on User's Premises
Description: Describes equipment inspection and radio frequency (RF) electromagnetic field measurement procedures for evaluation of RF industrial, scientific, and medical (ISM) equipment installed in the user's facility. The term, 'ISM equipment' includes equipment that generates RF energy for purposes other than radio communications, to cause physical, chemical, or biological changes; for example, industrial heaters (dielectric and induction), medical diathermy, ultrasonic equipment, RF plasma devices, and RF stabilized welders. These procedures are designed to help ensure that the equipment does not interfere with radio communications, navigation, and other essential radio services. The engineer responsible for the measurements should take all reasonable precautions to ensure that the maximum emission from the ISM equipment under test (EUT) has been measured.
- Status:
Working Group: WG139 - Radio Frequency Emission Working Group
Oversight Committee: EMC/SDCom - Standards Development Committee 
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