ETS-Lindgren 5411 GTEM! Test Cell - Manual (Page 72)

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Radiated Emissions Test Performance of GTEM!
 Computes the field intensity at appropriate height intervals over the total scan
height, either 1 to 4 meters or 2 to 6 meters for both vertical and horizontal
polarizations of the receive antenna when the equivalent tuned resonant
dipole is placed at an appropriate height over a perfect ground plane
 Selects the maximum field strength (larger) value of the horizontal or vertical
polarizations
 Presents this maximum value as compared to the chosen EMC specification
limit.
M
ODEL
5305
WITH
R
ADIATED
E
MISSIONS
T
ESTING
E
QUIPMENT
The augmentation of the GTEM! (which presents many of the advantages of both
semi-anechoic chambers and traditional TEM cells without accompanying
disadvantages) by sophisticated software is a significant technical advancement.
This allows the direct comparison of test results from radiated emissions testing
in the GTEM! to test results from more traditional test methods.
Goals of Testing and Analysis
The purpose of these tests was to develop a valid, direct comparison of the
performance of the GTEM! to the performance of the OATS. The goals of testing
were:
 Provide directly comparable sets of high quality test data from the
GTEM! and the OATS