IEEE 139-1988
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
IEEE Recommended Practice for the Measurement of Radio Frequency Emission from Industrial, Scientific, and Medical (ISM) Equipment Installed on User\'s Premises
30-03-2023
English
12-12-1988
1. Scope
2. Measurement Procedures
2.1 Establish the Objectives of the Measurements
2.1.1 Grouping ISM Equipment
2.1.2 Prototype Measurements
2.2 Physical Inspection of ISM Equipment
2.3 Determine Measurement Locations
2.4 Adjust the Equipment Under Test
2.5 Connect Equipment for Spectrum Measurements
2.5.1 Verify Equipment Use and Operation
2.5.2 Verify System Calibration
2.6 Determine the RF Spectrum
2.7 Measure Conducted Emission
2.8 Measure Radiated Emission
2.8.1 High Background Levels
2.8.2 Overhead Measurements
2.9 Calculate and Plot Data
3. Report of RF Field Measurements
4. Bibliography
APPENDIXES
A. Measurement System Characteristics
A.1 Antenna Selection
A.2 Detectors
A.3 Measurement System Sensitivity
A.4 Measurement System Bandwidth
B. Minimizing Measurement Errors
B.1 Antenna Problems
B.2 The Antenna Factor
B.3 Detector Problems
B.4 Data Collection and Processing Problems
B.5 Interface and Cable Errors
B.6 Impedance Mismatch
B.7 Baluns
APPENDIX TABLES
A.1 Antenna Selection
A.2 Minimum Bandwidth (-6 dB) of the Measurement
System
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.