Revision Standard – Inactive – Superseded. Uniform measurement procedures and techniques are provided for determining the effectiveness of electromagnetic shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable to 50 Hz and 100 GHz, respectively) for enclosures having no dimension less than 2.0 m. The types of enclosures covered include, but are not limited to, single-shield or double-shield structures of various construction, such as bolted demountable, welded, or integral with a building; and made of materials such as steel plate, copper or aluminum sheet, screening, hardware cloth, metal foil, or shielding fabrics.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | 1 General 1.1 Scope 1.2 Application 1.3 Objectives 2 References 3 Definitions <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 General Procedures 4.1 Background 4.2 Preliminary Procedures Basic Measurement Procedure <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Detailed Procedures 5.1 Standard Measurement Frequencies 5.2 Extended-Range Measurement Frequencies 5.3 Shielding Relationships Small-Loop Test Setup <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Standardized Positions for Small-Loop Test <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Low-Range (14 kHz to 20 MHz) Loop Measurements Frequency Range and Band Equipment and Setup 5.4.2.1 Source of Magnetic Field 5.4.2.2 Detector 5.4.3 Preliminary Procedure 5.4.3.1 Shielding Defects 5.4.4 Free-Field Calibration 5.4.5 Measurement Procedure Standard Measurement Frequencies Extended-Range Measurement Frequencies <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Shielding Relationships <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Determination of Low-Range Shielding Effectiveness GHz) Dipole Measurements Frequency Range and Band Standard Locations for Loops Along Entrance Wall With n Panels <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Test Equipment and Setup 5.5.2.1 Source of Midrange Electromagnetic Field Lowest Natural Resonant Frequency Chart <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.5.2.2 Detector Midrange Measurement Setup <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Setup for Simulating Free Field <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.5.3 Preliminary Procedure 5.5.4 Free-Field Calibration 5.5.5 Measurement Procedure <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Determination of Midrange Shielding Effectiveness High-Range 1.7 to 18 GHz) Horn Measurements Frequency Range and Band 5.6.2 Test Equipment and Setup Source of High-Range Electromagnetic Fields 5.6.2.2 Detector 5.6.3 Preliminary Procedure Dimensions and Frequency Ranges for Open-Waveguide Source Antennas <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | High-Range Measurement Setup <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.6.4 Free-Field Calibration Basic High-Range Measurement Procedure for All Shield Configurations Procedure for Single-Shield Enclosures Dimensions and Frequency Ranges for Horn Antenna of Detector <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Procedure for Rigid Double-Shield (Isolated or Cell-Type) Enclosures Procedure for Nonrigid Double-Shield (Isolated or Cell-Type) Enclosures Determination of Shielding Effectiveness 5.7 Substitution Technique 6 Quality Assurance Technical Report Background Measurement Procedure <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Measurement Instrumentation Results Standard Measurements of Shielding Performance <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Standard Data Format <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Appendix A Rationale A1 Basis Considerations Pertinent to Objective A2.1 Standard Measurements A2.2 Preliminaries A2.3 Nonlinearity Extended Frequency Range <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | A3 Additional Considerations A3.1 Cavity Resonances A3.2 Working Space A3.3 Measurement Locations A3.4 Measurement Equipment <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Appendix B Mathematical Expressions Specific Mathematical Formulations 20 MHz) Shielding Effectiveness Midrange (300 MHz to 1 GHz) Shielding Effectiveness B4 High-Range 1.7 to 18 GHz) Shielding Effectiveness <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Averages of Multiple Measurements <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Appendix C Miscellaneous Considerations Coplanar vs Coaxial Loops Nonlinearity of High-Permeability Ferromagnetic Enclosures C3 Selecting Measurement Frequencies C3.1 Regulatory Note C3.2 Selecting Frequencies <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Suggested Measurement Frequencies Typical Shielding Performance Table C1 ISM and FDS Frequencies <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Table C2 Suggested Test Frequencies for the 10 kHz to 18 GHz Range <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Table C3 Typical Shielding Performance <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" IEEE Standard for Measuring the Effectiveness of Electromagnetic Shielding Enclosures<\/b><\/p>\n |