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IEEE 139-1988

$109.42

IEEE Recommended Practice for the Measurement of Radio Frequency Emission from Industrial, Scientific, and Medical (ISM) Equipment Installed on User’s Premises (Inactive Reserved)

Published By Publication Date Number of Pages
IEEE 1988 23
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New IEEE Standard – Inactive-Reserved. This document 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,” as used here, 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 diatheremy, 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. Radio frequency field-strength measurements of installed ISM equipment may be required if any of the following conditions exist:1) The emission from the EUT was not measured by the manufacturer. 2) Because of its size or special operating conditions, the EUT could not be tested before installation. 3) Installed ISM equipment is suspected of causing interference. 4) ISM equipment has been modified in a way that could affect its rf emissions. 5) As the equipment ages, there is a question about its continued compliance. Etc.

PDF Catalog

PDF Pages PDF Title
1 Title Page
3 Foreword
Participants
5 CONTENTS
7 1. Scope
8 2. Measurement Procedures
9 2.1 Establish the Objectives of the Measurements
11 2.2 Physical Inspection of ISM Equipment
12 2.3 Determine Measurement Locations
2.4 Adjust the Equipment Under Test
13 2.5 Connect Equipment for Spectrum Measurements
14 2.6 Determine the RF Spectrum
15 2.7 Measure Conducted Emission
2.8 Measure Radiated Emission
16 2.9 Calculate and Plot Data
17 3. Report of RF Field Measurements
19 4. Bibliography
20 Annex A—Measurement System Characteristics (Informative)
22 Annex B—Minimizing Measurement Errors (Informative)
IEEE 139-1988
$109.42