When I am trying to measure signal studio generated 256QAM signal, the data EVM shows 40%
But I do see 256 constellation at trace 1, is it supported at all?
BTW, I have no problem for 64QAM EVM measurement
The 256QAM feature is supported for both LTE-Advanced for both FDD (Frequency Division Duplex) and TDD (Time Division Duplex) measurements. You will need a N9080B/N9082B-2XX type license. Without the -2 license, you cannot analyze the signal with 256 QAM modulation in the FDD/TDD application.
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