New IEEE Standard – Active. This standard provides uniform measurement procedures for determining the shielding effectiveness of electromagnetic (EM) shielding for a variety of enclosures and boxes having all dimensions between 0.1 m and 2 m in the radio frequency range not addressed by IEEE Std 299(TM)-2006. This standard is divided into two parts: Part I – 0.75 m to 2 m and Part II – physically small (< 0.75 m) but electrically large enclosures. In addition to a number of annexes aiding the measurement of shielding effectiveness of these enclosures, Annex I addresses physically small and electrically small enclosures, and Annex J addresses electrically small enclosures in reverberation chambers. Problems occurring in the testing of small enclosures having linear dimension less than 2 m are very different from determining the shielding effectiveness of large rooms and broad depending on the actual size of the enclosure itself. A number of other annexes are included that address rationale, mathematical formulas, selection of measurement techniques, preliminary measurement and repairs, wall-mounted monopoles, impedance mismatch correction, and using isolated monopoles in outer reverberation chambers.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | IEEE Std 299.1\u2122-2013 front cover <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Title page <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Important Notices and Disclaimers Concerning IEEE Standards Documents <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | IMPORTANT NOTICE 1. Overview <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 1.1 Scope <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 1.2 Purpose <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 1.3 Application of test methods and use of this document <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 2. Normative references 3. Definitions 3.1 General terminology 3.2 Technical terminology <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 4. Preparing for shielding effectiveness measurements \u2013 preliminary procedures 4.1 Background 4.2 Test plan 4.3 Calibration 4.4 Reference level <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 4.5 Dynamic range (DR) 4.6 Personnel in shielded enclosure (tester and witness) 4.7 Preliminary shield check procedures 4.8 Reverberation qualification (7.2 and Annex J only) 4.9 Pass\/fail requirements <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 4.10 Usable frequency ranges and limits (7.2 only) <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5. Measurement instrumentation <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6. Measurement uncertainty 7. Test procedures 7.1 Part I \u2013 0.75 m to 2 m enclosures <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | 7.2 Part II \u2013 Physically small (< 0.75 m) and electrically large enclosures <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | 8. Quality assurance technical report 8.1 Abbreviated test report 8.2 Full test report <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Annex A (informative) Rationale (for Part I \u2013 0.75 m to 2 m enclosures) A.1 Basis A.2 Considerations pertinent to the objectives of 1.2 of this standard <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | A.3 Cavity resonances <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | A.4 Measurement locations <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | A.5 Measurement equipment <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Annex B (informative) Mathematical formulas (for Part I \u2013 0.75 m to 2 m enclosures) B.1 Specific mathematical formulations B.2 Low range (50 Hz to 20 MHz) shielding effectiveness <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | B.3 High range (300 MHz to 100 GHz) shielding effectiveness B.4 Nonlinear (logarithmic) calculations B.5 Dynamic range considerations <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Annex C (informative) Miscellaneous supporting information (for Part I \u2013 0.75 m to 2 m enclosures) C.1 Coplanar versus coaxial loops C.2 Nonlinearity of high-permeability ferromagnetic enclosures C.3 Selecting measurement frequencies <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Annex D (informative) Guidelines for the selection of measurement techniques (for Part I \u2013 0.75 m to 2 m enclosures) D.1 Types of enclosures D.2 Performance requirements <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | D.3 Equipment requirements D.4 Regulatory agency conflicts <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Annex E (informative) Preliminary measurements and repairs (for Part I \u2013 0.75 m to 2 m enclosures) E.1 Background E.2 Frequencies for preliminary check E.3 Preliminary check procedures <\/td>\n<\/tr>\n | ||||||
| 68<\/td>\n | Annex F (informative) Rationale for wall-mounted monopoles <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | Annex G (informative) Impedance mismatch correction <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | Annex H (informative) Using isolated monopoles in outer reverberation chamber <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Annex I (informative) Measuring the shielding effectiveness of physically small and electrically small enclosures using magnetic field measurements (\u2264 300 MHz) I.1 Purpose <\/td>\n<\/tr>\n | ||||||
| 79<\/td>\n | I.2 Rationale I.3 Test setup and circuits <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | Annex J (informative) Electrically small enclosures in reverberation chambers J.1 Background <\/td>\n<\/tr>\n | ||||||
| 86<\/td>\n | J.2 Measurement procedure <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | J.3 Formula to be applied J.4 Internal probe type and positioning <\/td>\n<\/tr>\n | ||||||
| 88<\/td>\n | Annex K (informative) Utilization of absorbing (dissipative) materials in equipment enclosures for the measurement of shielding properties <\/td>\n<\/tr>\n | ||||||
| 95<\/td>\n | Annex L (informative) Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m<\/b><\/p>\n |