Measurement uncertainty for common-mode disturbances can be reduced from about 22 dB to a maximum of a few dB Mart Coenen, Philips Applied Technologies Eindhoven, the Netherlands Introduction In early 1980, extensive discussions were held within the IEC CISPR/A working group regarding the definition of the impedance characteristics and the RF emission limits attained via the … [Read more...]
RF Conducted Immunity System Tests to DO 160D & E and Other Exacting Standards
The Model C100400 from AR RF/Microwave Instrumentation is a fully contained system for testing RF conducted immunity. It contains all the instruments need to perform conducted immunity testing for the MIL-STD-461D/E, DO 160 D/E, and IEC 61000-4-6 specifications. The system includes a signal generator, a two-channel power meter, and a 100-watt nominal AR amplifier (10 kHz to 400 … [Read more...]
Measurement of Intermittent Emissions with a Time-Domain EMI Measurement System
With time-domain EMI measurement, a single scan can test intermittent radiating devices quickly and accurately. Stephan Braun and Peter Russer, Institute for High Frequency Engineering Munich University of Technology Munich, Germany For some time, measurements of electromagnetic interference have been carried out by super-heterodyne receivers operating in the frequency … [Read more...]
National Instruments’ Will Use Intercept’s RF Software for New RF Signal Analyzer
Atlanta, GA-based Intercept Technology, Inc. has announced that National Instruments has selected the Pantheon and Mozaix RF design flow in the development of high-performance instrumentation. Intercept worked closely with National Instruments on the migration of in-process RF designs and in training RF design and layout personnel in the use of Intercept’s software and welcome … [Read more...]
Is Your Surge Protection Strategy Adequate for Dealing with Extreme Environments?
Relevant data and basic calculations can determine the level of lightning protection needed for a particular facility. Bryan Cole Technology Research Council Nichols, NY, USA Jim Tiesi Emerson Network Power Surge Protection Binghamton, NY, USA High-reliability systems require system up-times that approach reliability requirements of 99.9999 percent. Putting this requirement … [Read more...]
Test Beyond the Specs: Why Test Higher in Frequency and Field Strength?
IEC 61000-4-3: 2006’s frequency escalation Jason Smith and Pat Malloy, AR RF/Microwave Instrumentation Souderton, PA An increasing number of new and proposed EMC standards are pushing the upper frequency test limits higher into the microwave spectrum. The latest EMC standard released, IEC 61000-4-3: 2006, is no exception. The upper frequency test limit has been increased from … [Read more...]
Towards an EMC Technology Roadmap
A technology roadmap is a tool for attaining the optimum development within a sector of technology Marcel Van Doorn, Phillips Electromagnetics & Cooling Competence Center Eindhoven, the Netherlands Introduction This article expands earlier work on the concept of a technology roadmap for EMC technology.1 Just as a traditional terrestrial map helps insure that travelers … [Read more...]
Different Methods of Connecting an SPD to an Electrical Distribution Network
The way in which SPDs are connected can have a large impact on the overall protection provided Bryan Cole Introduction Surge protective devices (spds) or transient voltage surge suppressors (TVSS) are used to reduce the impact of overvoltage transients on the electrical distribution networks found in various industries. Of course, the efficacy of these devices will affect the … [Read more...]
High Gain Microwave Horn Antenna Supplies Constant High Intensity Fields for RFI/EMI Testing
The Model AT4418 from AR RF Microwave Instrumentation is a wideband, high gain, microwave horn antenna that provides a minimum gain of 7 dB over the frequency range of 1 GHz to 18 GHz over isotropic. The Model AT4418 supplies the constant high intensity fields necessary for RFI/EMI field testing within and beyond the confines of a shielded room. It can be used for emissions … [Read more...]
AR Offers New Literature on Conducted Immunity and Automotive Transient Generator Test Systems
AR RF Microwave Instrumentation has released new literature with comprehensive information on its innovative test systems for conductive immunity and automotive transient generator testing. The new brochure includes AR’sCI (Conducted Immunity) Systems, self-contained, all-in-one test systems; and the company’sTGAR Systems for automotive transient generator testing. … [Read more...]
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