RMS Error Vector Time (NB-IoT)
shows the Root Mean Square (RMS) average EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format. for each symbol. The RMS average for each symbol is calculated from the subcarrier EVMs of currently selected channels and signals (see Composite Include).
The value "ss" in the "xRMS: ss" or "xPeak: ss" annotation at the top of the trace is how many subcarriers were included in the current measurement. Only symbols containing channels/signals selected in Composite Include are included in the count.
See Also
