Lightning Induced Ground Potential Rise (GPR)

Select the most suitable waveforms for evaluating equipment resistibility to lightning damage when a GPR is either the suspected source of the damage, or its effects are to be tested for.
1206 iNARTE fig1

The iNARTE Informer – June 2012

The process of merging iNARTE into the RABQSA International organization is now well under way. All new and renewed iNARTE Certificates are now issued under the hands of the RABQSA President, Peter Holtmann and... Read More...
1206 OYM fig1

From IEC to ISO

In this column, we'll explore how symbols migrate from IEC standards into ISO standards – and the importance of standardization.   To better specify the safety labels you use on your products, it's helpful to... Read More...
1206 F2 eq1

Single Antenna Measurement Using Gated Time Domain and The Mirror Method

This article provides a basis for using gated time domain and a highly reflective mirror to measure the gain, phase, beamwidth and radiation pattern of broadband antennas. The tests were completed using the Anritsu VectorStar VNA. The speed and data points (100,000) make possible high resolution in time domain. Three commercial reference horns were measured and an aperture and mirror conductivity correction applied. The resulting data agreed reasonably well with the published data. Two additional classical methods were also performed for validation.

1206 F3 fig1

Recent Changes to GR-63-CORE

Telcordia recently released GR-63-CORE Issue 4 “Physical Protection Requirements for Network Telecommunications Equipment”, with a total of 27 new requirements (Rs) and objectives (Os). It has been six years si... Read More...
1206 F4 fig1

Fifty-Year Old EMI Testing Problems Solved!

There have been inherent problems with audio frequency conducted susceptibility tests since their inception. These are: ensuring that the injected signal drops across the test sample; monitoring the signal that is developed across the test sample, both from the point-of-view of isolating the instrumentation so it doesn’t ground the input power return and, more problematically, monitoring injected ripple riding on an ac bus potential. These issues are resolved using a novel but inexpensive transducer described herein.