IEC/EN 61000-4-20

Emission and Immunity Testing in Transverse Electromagnetic (TEM) Waveguides

IEC 61000-4-20:2010 relates to emission and immunity test methods for electrical and electronic equipment using various types of transverse electromagnetic (TEM) waveguides. These types include open structures (for example, striplines and electromagnetic pulse simulators) and closed structures (for example, TEM cells). These structures can be further classified as one-, two-, or multi-port TEM waveguides. The frequency range depends on the specific testing requirements and the specific TEM waveguide type. The object of this standard is to describe:
- TEM waveguide characteristics, including typical frequency ranges and EUT-size limitations;
- TEM waveguide validation methods for EMC tests;
- the EUT (i.e. EUT cabinet and cabling) definition;
- test set-ups, procedures, and requirements for radiated emission testing in TEM waveguides and
- test set-ups, procedures, and requirements for radiated immunity testing in TEM waveguides.
IEC 61000-4-20:2010 does not intend to specify the tests to be applied to any particular apparatus or system(s). The main intention of this standard is to provide a general basic reference for all interested product committees of the IEC. For radiated emissions testing, product committees should select emission limits and test methods in consultation with CISPR standards. For radiated immunity testing, product committees remain responsible for the appropriate choice of immunity tests and immunity test limits to be applied to equipment within their scope. This standard describes test methods that are separate from those of IEC 61000-4-3. This second edition cancels and replaces the first edition published in 2003 and its amendment 1 (2006), and constitutes a technical revision. It has the status of a basic EMC publication in accordance with IEC Guide 107. The main changes with respect to the first edition of this standard and its amendment are the following:
- consistency of terms (e.g. test, measurement, etc.) has been improved;
- clauses covering test considerations, evaluations and the test report have been added;
- references to large TEM waveguides have been eliminated;
- a new informative annex has been added to deal with calibration of E-field probes.

OTHER PRODUCTS IN THE SAME STANDARD:

GTEMCELL Ltda shielded chambers are built up as modular construction. Due to individual modules, any size of the chamber can be realized. Big chambers may require an outer supporting structure or alternatively, the shielding material can be attached directly to the building. Panels are manufactured of 2,0 mm thickness hot galvanized sheet steel double bordered.

Gtemcell develops a wide range of shielded box for commercial, industrial, and military applications. Customized solutions according to your needs!

5G applications
Full Anechoic box
Effectiveness shielding test
Antenna measurements
RF immunity test applications

LSFrame System for multiple probe usage with minimal rack space

LSFrame is LUMILOOP’s solution for straight-forward and reliable integration of one or more LUMILOOP products in a LAN-controlled, standard 19 inch form factor appliance.

LSFrame can host:

LSProbe Laser-Powered Electric-Field Probes,
CI 250+
LSPM High-Speed Power Meters, and
LSPM+ High-Speed Power Meters, and
upcoming LUMILOOP products.

EMC SHAC-200, 700MHz-40GHz

5G applications
Full Anechoic box
Effectiveness shielding test
Antenna measurements
RF immunity test applications
(L)222x(W)110x(H)110 cm (+H 70cm trolley)

Gtemcell offers an innovative shielding product made of a highly conductive double layer of aluminum with internal reinforcing mesh in polyester for the coating and creation of shielded environments within pre-existing structures. The application frequencies range from a few Mega Hertz to several GHz with an electric field attenuation of 45-80dB. The great advantage is ease of application even on curved and complex surfaces and lower costs which make this application particularly attractive. GTEMCELL supplies the shielded fabric or performs all the environmental shielding work. The aesthetic finishes are the responsibility of the customer.
The construction includes a preliminary inspection to evaluate all the "critical" aspects such as the openings present: doors. windows, air conditioning systems, electrical connections and consequently draw up an economic evaluation of the costs.

VRC (Reverberation tent chamber)

This product is a chamber made of a flexible metal fabric tent assembled as a cavity that provides a periodic electromagnetic environment that is randomly polarized, spatially uniform, and isotropic.

The walls of the chamber are inducted in mechanical vibration between 5 and 20Hz, able to reflect the electromagnetic waves inside the tent with a reverberation effect. VRC finds applications to create an electromagnetic environment for immunity and emission testing. The reverberation tent chamber offers the advantage of higher field-to-input power ratios and faster test throughput times than other test methods.

The IEC 61000-4-21:2003 is a comprehensive standard for performing electromagnetic testing with a reverberation chamber.

The modular construction of the tent fabric allows customized dimensions assembly to meet space limitations e/o including the device under test. The VRC is supplied complete with a technical panel and optional filters.

IEC/EN 61000-4-20

Categories

Automotive +

Component +

International Product Standards +

International Test Standards +

Military & Avionics +

Safety +

Telecom/Wireless +

IEC/EN 61000-4-20