EMC Measurement with GTEM Cell

Nowadays, electromagnetic compatibility plays an increasingly important role in the development of a new equipment. When developing, one should not only pay attention to how noisy is the equipment itself, but also how immune it is to the noise coming from the surroundings. The purpose of this article is to present an instrument used in EMC measurement on a training model and then to evaluate the measured results according to the given standards. During the course of the test, a panel designed for training by Texas Instruments was used coupled with a measuring receiver and a GTEM cell. The obtained results clearly showed the advantages and disadvantages of the cell construction compared to other EMC measurement procedures

Implementing an existing teaching method in a virtual environment

The topic of this study is to improve the effectiveness of digital filter design in education. The Pre-Study on Education (Sabo, 2013) processes the theoretical foundations on which a framework was built. The study examines the possibilities of digitizing and implementing the existing framework in a virtual environment using the MaxWhere environment. After reviewing the environment, the virtual media and panels that may be suitable for DSP education had been selected. Testing selected display formats and simulation options is in progress with a small number of student groups. Successful integration of the digital filter design into a virtual environment is expected to make the adoption of the required material more effective for students.A tanulmány témája a digitális szűrő tervezés oktatásának hatékonyságának javítása. Az oktatásra vonatkozó előtanulmány (Sabo, 2013) feldolgozza az elméleti alapokat, amely alapján elkészült egy keretrendszer. A tanulmány a meglévő keretrendszer digitalizálásának és virtuális környezetben történő megvalósításának lehetőségeit vizsgálja a MaxWhere környezet felhasználásával. A környezet áttekintése után ki lettek választva azok a médiumok és panelek, amelyek a DSP oktatás területén alkalmasak lehetnek. A kiválasztott megjelenítési alakok és szimulációs lehetőségek tesztelése folyamatban van kisszámú hallgatói csoportokkal. A digitális szűrőtervezés virtuális környezetbe történő sikeres integrálása várhatóan hatékonyabbá fogja tenni a hallgatók számára az előírt anyag elsajátítását

A multi-chanel electrical impedance meter based on digital lock-in technology

Abstract The presented multichannel measuring system working on various frequencies is suitable either for electrical impedance spectroscopy or tomography. The authors of this paper have developed the complete measurement system and a graphical user interface platform. The accuracy of impedance amplitude and phase are 1 ppm and 0.01°, respectively. The basic instrument works with 8 channels and can be expanded to 64 channels with the application of multiplexing or multiple parallel connected instruments in the same system