Hi Dr Ali! My name is Christian. First at all thanks for all your videos. I have a question for about equipments to analize EMI emissions. Right now we have two options based on two brands, Rigol and Rohde&Schwars. I know that R&S is better than Rigol, but is more spensive too!!! For both option we will include near field probes and a TEM cell. For the spectrum analyzer we have the option of the Rigol RSA3030 that there is a real time sprectrum analyzer and for R&S the FPC1500 that there is an entry level spectrum analyzer. We don't have experience using this kind of equipments, but we did a few test on a semianecoic chamber. We decide incorporate this equipment becase we need a better harware debbuging before go to the semianecoic chamber. Based on your experience, what do you think about Rigol spectrum analyzers? Do you think that RSA3030 is a good equiment for EMI precompliance tests? Thanks and best regards!