Ratio of Level Mismatch

For PAM3 and PAM4 signal types, the Ratio of Level Mismatch is a measure of the smallest separation between adjacent levels divided by the ideal separation.

When adding this measurement, the waveform on which measurements are made depends on the selected SNDR Standard:

Waveform on which measurements are made for PAM4 SNDR standards

Standard	Waveform on which measurements are made
PCIe	The selected Source input channel
IEEE (PRBS13Q)	The SNDR Input waveform
IEEE 802.3 dj	The SNDR Input waveform
ASA SG4, 5	The SNDR Input waveform

Waveform on which measurements are made for PAM3 SNDR standards

Standard	Waveform on which measurements are made
USB4 Gen 4	The SNDR Input waveform

SCPI Command

:MEASure:SNDRatio:RLMismatch