RJ (rms) Result
The Jitter mode Random Jitter (RJ) measurement is jitter that is unpredictable and not data related. RJ is unbounded, meaning that measured values increase with longer measurement times. Causes of RJ include noise on power supplies and in amplifiers. In Jitter Mode, RJ is derived by applying a fast Fourier transform to the RJ,PJ Histogram graph to transform the jitter values to the frequency domain. It is the root mean square (rms) result, which is the standard deviation of the random jitter distribution. The displayed RJ (rms) result is the maximum value determined between the RJ (rms) values for each waveform edge (rising and filling):
You can measure Eye Width on patterns longer than PRBS16, such as PRBS31, using Advanced Eye Analysis.
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SCPI Command
:MEASure:JITTer:RJ