Introduction EMI gaskets are used extensively by the electrical/electronic industry to assist in complying with the various EMI radiated emission requirements. These requirements include compliance to DoD TEMPEST and EMI, and FCC and EU EMI test limits. As a rule of thumb the radiated emission TEMPEST requirements are about two orders of magnitude (40 dB) more stringent than … [Read more...]
Measuring Shielding Effectiveness with Two Near Field Probes
Introduction Sometimes you may find yourself needing to make a quick check on the shielding effectiveness (SE) of a material, such as plated plastic or shield gasket material. It’s possible to set up a quick measurement setup using near field probes by using a couple H-field (for magnetic field SE) or E-field (for E-field SE). You’ll also need a spectrum analyzer with … [Read more...]
Troubleshooting Radiated Emissions at the EMC Test Lab
Note: This is an excerpt from the book, EMI Troubleshooting Cookbook for Product Designers, by Patrick André and Kenneth Wyatt. See Reference 1. Introduction Radiated emissions are by far your highest risk when performing compliance testing at the test facility. With all the high-speed digital circuitry inside electronic products today, it becomes all too easy for harmonics … [Read more...]
5 Ways Signal Noise Can Impact Electrical Equipment
Accurate data acquisition is often critical in various engineering and technical projects. However, a pervasive yet often-overlooked issue that arises in the system is signal noise. This unwanted electrical interference, originating from multiple sources, can corrupt measurements, hinder communication, and compromise equipment integrity. Recognizing the Symptoms: … [Read more...]
EMC and EMI Simulation for Launchers and Satellites
By: Yannis Braux and Stephen Murray CST Computer Simulation Technology Introduction EMC and EMI analysis plays an important role in ensuring the correct functioning of electronic systems and guaranteeing reliability throughout their lifetimes. This task is all the more difficult and crucial when the system is complex or exists in a challenging EM environment. This … [Read more...]
Introduction to MIL-STD-461G
Where MIL-STD-464C serves as a system/platform level set of requirements, MIL-STD-461G serves as an equipment/subsystem level set of requirements. Similar to MIL-STD-464C, MIL-STD-461G was developed as an “Interface Standard” to allow usage without a waiver. The overall structure of the two documents is also the same in that both have a contractual main body and a very … [Read more...]
Spectrum Management and the EME
Certification In years past, E3 (Electromagnetic Environment Effects) control and Spectrum Supportability were considered separate entities and design and development efforts were often segregated. Over the last several years, the trend has shifted to a more consolidated approach and today the two areas go hand in hand. Spectrum Supportability starts with equipment spectrum … [Read more...]
Introduction to MIL-STD-464C
Responding to increasing criticism, Secretary of Defense William Perry issued a memorandum in 1994 that effectively eliminated the use of most defense standards. This has become known as the “Perry memo”. Many defense standards were canceled. In their place, the DOD encouraged the use of industry standards for quality assurance. MIL-STD-464 was developed as an “Interface … [Read more...]
SCHURTER Classic Power Entry Module with Circuit Breaker Gets Even Better
Santa Rosa, California, November 30th, 2023 – SCHURTER series DG11 and DG12 with and without main filters feature a first-of-its-kind ingress protection solution for IEC inlets, consisting of a seal gasket between the connector and mating V-Lock power cord. The blue colored latch of the V-Lock power cord and blue inlay of the appliance inlet indicate that the two have been … [Read more...]
Schurter Sets New Benchmark in Reducing CO2 Footprint with New Green Line
Santa Rosa, California, July 27th, 2023 – SCHURTER further embarks on its sustainability initiatives by introducing its new Green Line collection of high-quality components. As part of SCHURTER’s sustainable strategy, these IEC 60320-1 appliance connectors are the industry’s first to contribute to less CO2 emissions and lower material consumption. They are also first in the … [Read more...]
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