Home>IEC standards>AS/NZS IEC 61000.4.3-2013 pdf free

AS/NZS IEC 61000.4.3-2013 pdf free

AS/NZS IEC 61000.4.3-2013 pdf free.Electromagnetic compatibility (EMC) Part 4.3: Testing and measurement techniques- Radiated, radio-frequency, electromagnetic field immunity test.
This part deals with immunity tests related to the protection against RF electromagnetic fields from any source.
Particular considerations are devoted to the protection against radio-frequency emissions from digital radiotelephones and other RF emitting devices.
NOTE 2 Test methods are defined in this part for evaluating the effect that electromagnetic radiation has on the equipment concerned. The simulation and measurement of electromagnetic radiation is not adequately exact for quantitative determination of effects. The test methods defined are structured for the primary objective of establishing adequate repeatability of results at various test facilities for qualitative analysis of effects.
This standard is an independent test method. Other test methods may not be used as substitutes for claiming compliance with this standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050(161), International Electrotechnical Vocabulary (1EV) — Chapter 161: Electromagnetic compatibility
IEC 61000-4-6, Electromagnetic compatibility (EMC) — Part 4-6: Testing and measurement techniques — Immunity to conducted disturbances, induced by radio-frequency fields
3 Terms and definitions
For the purposes of this part of IEC 61000, the following definitions, together with those in IEC 60050(161) apply.
3.1 amplitude modulation
process by which the amplitude of a carrier wave is varied following a specified law
3.2 anechoic chamber
shielded enclosure which is lined with radio-frequency absorbers to reduce reflections from the internal surfaces
3.2.1 fully anechoic chamber
shielded enclosure whose internal surfaces are totally lined with anechoic material
3.2.2 semi-anechoic chamber
shielded enclosure where all internal surfaces are covered with anechoic material with the exception of the floor, which shall be reflective (ground plane)
3.2.3 modified semi-anechoic chamber
semi-anechoic chamber which has additional absorbers installed on the ground plane
3.3 antenna
transducer which either emits radio-frequency power into space from a signal source or intercepts an arriving electromagnetic field, converting it into an electrical signal
4 General
Most electronic equipment is, in some manner, affected by electromagnetic radiation. This radiation is frequently generated by such general purpose sources as the small hand-held radio transceivers that are used by operating, maintenance and security personnel, fixed- station radio and television transmitters, vehicle radio transmitters, and various industrial electromagnetic sources.
In recent years there has been a significant increase in the use of radio telephones and other RF emitting devices operating at frequencies between 0,8 GHz and 6 GHz, Many of these services use modulation techniques with a non-constant envelope (e.g. TDMA). See 5.2.
In addition to electromagnetic energy deliberately generated, there is also radiation caused by devices such as welders, thyristors, fluorescent lights, switches operating inductive loads. etc. For the most part, this interference manifests itself as conducted electrical interference and. as such, is dealt with in other parts of the IEC 6 1000-4 standard series. Methods employed to prevent effects from electromagnetic fields will normally also reduce the effects from these sources.
The electromagnetic environment is determined by the strength of the electromagnetic field. The field strength is not easily measured without sophisticated instrumentation nor Is it easily calculated by classical equations and formulas because of the effect of surrounding structures or the proximity of other equipment that will distort and/or reflect the electromagnetic waves.
5 Test levels
The test levels are given in Table 1.AS/NZS IEC 61000.4.3 pdf download.

Related PowerPoint Templates

Template Categories