TBGTC1_操作说明书手册

V1.1TBGTC1粉TEKB×DIGITAL SOLUTIONSOPEN GTEM CELL FOR EMC PRE-COMPLIANCE TESTING1 IntroductionThe TBGTC1 open GTEM-cell adds to our existing portfolio of low-cost open TEM-cells for EMC pre-compliancetesting.Unlike TEM cells,which have limits at higher frequencies,GTEM cells may operate up to many GHz.Products can be examined for radiated emissions and immunity before and after EMC-related design changesusing a spectrum analyzer with tracking generator,modulated power amplifier,and EMCview software.The engineer can easily validate whether his changes improved or harmed the EMC perfommance,or if it stayedunaltered.The use of GTEM cells eliminates the need for guesswork.When positioned vertically,the TBGTC1 requires just an area of 78 cm x 52 cm.The EUT can be convenientlyplaced on a supplied wooden board that rests on the GTEM-cell spacers.2 GTEM cellA GTEM cell is a tapered,hybrid terminated 50 ohm stripline device for radiated emissions and immunity testingof electronic devices.It is not a replacement,but due to its size and cost it is a convenient altemative tomeasurements in an anechoic chamber.A GTEM cell consists of a septum,the conductive strip in the centre section and walls which are connected toground.The geometry is designed to present a 500 stripline.The device under test(DUT)is placed in betweenthe bottom wall and the septum.The TBGTC1 is an"open GTEM cell with no side walls for convenient placement of the DUT and a preferablevertical configuration.It may pick up RF background noise,which however can be taken into account by doing ameasurement of the cell output signal before powering on the DUT or by placing the GTEM-cell in a shielded tent,which is also available from Tekbox.1