Multi-tone Testing can save both Time and Money

Given the huge amount of time required to conduct a radiated immunity test, it is no wonder operators “dream” of ways to improve efficiency to speed up the test.  The musings generally go as follows: 

-Can one antenna cover the entire frequency range? 
-Can RF switching be automated? 
-Let’s add a controller to automatically switch  antenna polarizations or even go as far as 
 automatically turn the EUT to expose all four sides to the RF field. 
-What if we could speed up the dwell time just a hair without compromising the test?  
While all of the above thoughts are useful, they only decrease transition times, which unfortunately comprise only a fraction of the total test time. This articles goes over multi-mode testing techniques that can save time and money.

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