Induction cooktop testing D.L.S. performs 10-meter and 30-meter distance far-field EMC testing to support formal EMC certifications where 30-meter test distance is a specific requirement at 9 kHz to 30MHz frequencies. This testing can be used to show compliance for FCC part 18, FCC part 15, and other global emissions standards. Products include induction cooktops, restaurant … [Read more...]
Review of MIL-STD-461 CS117 Lightning Induced Transients, Cables and Power Leads
Introduction Lightning may produce a spectacular display when viewed, but the associated electromagnetic effects (EME) has the potential (pun intended) to severely damage electrical and electronic circuits. MIL-STD-461G added a new test method to evaluate device tolerance for induced current on equipment cables or insulation breakdown from the effects of indirect lightning. … [Read more...]
EMC Laboratory Selection Audit Items
Introduction This blog will provide the reader with an introduction to some of the items that need to be looked at when auditing an EMC laboratory with an eye to placing them on your company’s approved lab list. This is not an in-depth look at each item but is based on my experiences auditing laboratories (both in-house and 3rd party) over a number of years. Key … [Read more...]
The Top-Ten Articles and Blogs as of December 2018
Most magazines like to review the top ten most viewed articles this time of year and Interference Technology is no different. We think our readers and authors are awesome and enjoy highlighting some of the most popular articles to date. So, here we go: What is differential and common mode current, by Ron Brewer. Unwanted conductive and radiative emissions can be … [Read more...]
Rigol Launches its MSO5000 Series of Oscilloscopes
Offered with 2 or 4 analog and 16 digital input channels Fresh from celebrating the company’s 20th anniversary on October 19th and noting, as Rigol VP Victor Chen did that “we want to become the world’s most pre-eminent brand (of instruments) not just China’s pre-eminent brand,” Rigol used Electronica as a platform to roll out its new MSO5000 series of oscilloscopes, … [Read more...]
Design for DO-160 Pin Injection for Indirect Lightning
In my first article, I gave an overview of RTCA’s DO-160 and the electrical EMC sections that it entails. In the next few articles I will be discussing the most critical EMC section of DO-160. Critical sections DO-160 Sect 16.0 - Power Input Sect 20.0 - Radio Frequency Susceptibility (Radiated and Conducted) Sect 21.0 - Emission of Radio Frequency … [Read more...]
Review of MIL-STD-461 CS118 – Electrostatic Discharge
Introduction MIL-STD-461G, released in December 2015, added a test for Personnel Borne Electrostatic Discharge (ESD). Prior to this release, this type of test for electronic systems and sub-systems was managed at the system level under MIL-STD-464C released in 2010. Both of these standards contain similar requirements. MIL-STD-461G provides the details on testing and … [Read more...]
Overview of the DO-160 Standard
In aerospace, there is one standard that always seems to be popping up, DO-160. Aircraft suppliers are often complying with aviation authorities’ regulations by testing their product to DO-160. DO-160 is a standard that was published by the industry group Radio Technical Commission for Aeronautics known as RTCA. RTCA is not a government regulation, however the FAA, EASA and … [Read more...]
D.L.S. Streamlines RFID Testing for FDA EMC Compliance Requirements on Medical Devices
The FDA has established compliance criteria for electromagnetic compatibility that now includes protection against exposure to RFID devices. This recent requirement is related to potential risks due to the increase of RFID equipped devices to a level that the FDA has determined warrants inclusion on current FDA applications. AIM 7351731, an FDA recognized standard for the … [Read more...]
Emissions Test Facility – OATS vs SAC?
You’ve been tasked by management to build a new, from scratch, EMC test facility. Among other items, you need to decide between an Open Area Test Site (OATS) or an RF Semi-Anechoic Chamber (SAC). How do you decide? To someone who has been there, done that, the choice is clear, but what are some factors that might sway the decision one way or the other? Design of an … [Read more...]
