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Differences between a E4407B spectrum analyzer and a E7405A EMC analyzer?

Question asked by colby on Mar 27, 2014
Latest reply on Apr 2, 2014 by colby
Assuming that both can have the same options installed (or is that a bad assumption in itself?), what are the differences in what you can do with a E4407B versus a E7405A? Is the E7405A "crippled" in some way to make it only useful for EMC testing, or can it be used as a general purpose spectrum analyzer? Is one of these devices a superset of the other in terms of functionality, or is there some non-overlap between the two? It wasn't obvious to me by reading the specs.