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IEEE 299

Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures

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Organization: IEEE
Publication Date: 9 December 1997
Status: inactive
Page Count: 44
scope:

Foreword 

This document provides a standard set of methods and procedures for determining the shielding effectiveness of shielding enclosures. The enclosures of concern include those used for testing groups of equipment, vehicles, computing systems, and smaller units whose electromagnetic emission and susceptibility require determination without disturbance from other sources. MIL-STD 285 was the common reference for many years, but the applicability of that document lessened with the advent of technological changes. Further, restructuring within U.S. Government policies and procedures has resulted in an emphasis on the use of commercial standards and the discontinuance of documents such as MIL-STD 285. The basic premise of MIL-STD 285 is still in position-the shield effect is to provide an insertion loss to outside influence. This standard offers testing based upon the performance specifications of the shield, rather than a fixed set of parameters that may not be applicable to the shield in question. Specific test procedures and frequency ranges are then selected as needed.

Scope

This standard provides uniform measurement procedures for determining the effectiveness of electromagnetic (EM) shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable down to 50 Hz and up to 100 GHz).

The owner of the shielding enclosure shall provide the frequencies at which the shield will be tested, and the shielding effectiveness limits for pass/fail. This standard suggests a range of test frequencies that would provide very high confidence in the effectiveness of the shield.

Document History

September 15, 2006
Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
This standard provides uniform measurement procedures for determining the effectiveness of electromagnetic (EM) shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable down to 50 Hz and...
September 15, 2006
Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
This standard provides uniform measurement procedures for determining the effectiveness of electromagnetic (EM) shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable down to 50 Hz and...
IEEE 299
December 9, 1997
Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
Foreword  This document provides a standard set of methods and procedures for determining the shielding effectiveness of shielding enclosures. The enclosures of concern include those used for testing...
March 11, 1991
Standard for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
This standard provides uniform measurement procedures and estimation techniques for determining the effectiveness of room-size, high-performance electromagnetic (EM) shielding enclosures at...
January 1, 1969
Recommended Practice for Measurement of Shielding Effectiveness of High-Per formance Shielding Enclosures
OBJECT AND SCOPE The object of this Recommended Practice is to provide uniform test procedures and estimation techniques to determine the relative effectiveness of room-size high performance...

References

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