In an Electromagnetic Compatibility (EMC) laboratory or engineering facility, the EMI receiver is probably one of the most useful devices to be used in EMC test chamber. EMI problems are frequently encountered throughout the early phases of the product development cycle and measuring receivers of various types are employed to identify and rectify these issues. When all EMI fixes have been implemented by the design team, an EMI receiver is used to perform full compliance certification testing before the shipment of the finished product to customers. The LISUN EMI-9KB EMI receiver is one of the best machines available for this job in the current market. This article will explore how exactly EMI receivers are used in EMC test chamber.

Contents

EMI receivers: 1
EMI-9KB EMI receiver: 1
EMC test: 2
EMC test chamber: 2
Semi-anechoic chambers 2
RF shielded room 2
Conclusion: 3

EMI receivers:

EMI receivers are high-performance instruments that acquire data for analysis. EMI receivers find use in scenarios where transient signals or spurious emissions may appear and are required to be attained with fast acquisition rates, like in an EMC test chamber.

Electromagnetic Interference (EMI) is an electronic noise that interferes with cable signals and reduces signal strength and integrity. EMI is commonly generated by electromagnetic radiation sources such as motors and machines. EMI (Electromagnetic Interference) falls into two types: conducted interference and radiated interference. Conducted interference is regarding the interference of signals from one electrical network to another electrical network through a conducive medium. Radiated interference is understood as the source’s interference signal to another electrical network through space.

EMI-9KB EMI receiver:

The EMI-9KB EMI receiver by LISUN is produced by the full closure structure and strong electro-conductibility material, with a high shielding effect. New technology for the EMI Test equipment has solved the instrument self-EMI problem. The test findings are presented in accordance with the international test report format. The EMI Test equipment EMI-9KB fully complies with CISPR15:2018, CISPR16-1, GB17743, FCC, EN55015, and EN55022.

The features of LISUN EMI-9KB EMI Receiver as an excellent EMC testing equipment include having operation frequencies of 9K-300MHz, LISN-A Artificial Network Power (5A), CDNE-M316 Coupling/Decoupling Network for Emission, 3pcs Isolation Transformers, Attenuator, and cables.

EMC test:

EMC (Electromagnetic Compatibility) pre-compliance testing exists to ensure that your electrical devices do not emit a large amount of electromagnetic interference, commonly known as radiated and conducted emissions and that in the presence of other electromagnetic instruments, your device continues to perform as intended.

EMC test chamber:

An electromagnetic compatibility (EMC) test chamber or Electromagnetic Interference (EMI) chamber is a very special piece of test equipment that is employed for the testing of electronic devices for regulatory standards regarding both radiated and conducted radio frequency (RF) immunity and emissions. There are a lot of different types of EMC test facilities, open-area test sites (OATS), test cells and EMC test chambers used for EMC testing. Of all different types of EMC test facilities that perform EMC testing, the most used one is the semi-anechoic chamber.

Semi-anechoic chambers

The term “anechoic” means non-reflective, non-echoing, and echo-free. Semi-anechoic chambers are the prioritized test facilities for nearly all radiated and conducted emissions testing standards that include ANSI C63.4 and CISPR 16. These standards detail the methods of calculating radio-noise emissions from low-voltage electrical and electronic equipment.

RF shielded room

The RF shielded room is basis for a semi-anechoic chamber. This near RF-impenetrable metal box offers electric and magnetic field shielding that is effective up to 100 dB over a broad range of frequencies. Because no signals or ambient noise from the outside world can penetrate it, it is good for emissions testing. It makes it much easier to measure the emissions generated only by the EUT. Immunity testing requires no signals generated inside the enclosure to escape to the outside world which might possibly cause harmful interference to equipment or
personnel located nearby, making it good for it too.

Conclusion:

EMI receivers are excellent tools for compliance testing. LISUN produces the best EMI receivers on the market. EMC test chambers are used for running different tests on products in specialized situations and this LISUN EMI receiver can be the best option to perform such tests in unusual situations.