# Level Means

For each level, this measurement returns the mean level of long-run-lengths within the pattern. These are the same long-run-lengths used in the Sigma-n measurement.

When adding this measurement, the measurement name(s) depend on the selected SNDR Standard:

Measurement Names
Signal Type | Standard | Measurement Names | Waveform on which measurements are made
--- | --- | --- | ---
NRZ | ASA SG1-3 | SNDR Level 0-1 | The SNDR Input waveform
PAM4 | PCIe | Sigma-n Level 0-3 | The selected Source input channel
PAM4 | IEEE (PRBS13Q) | SNDR Level 0-3 | The SNDR Input waveform
PAM4 | IEEE 802.3 dj | SNDR Level 0-3 | The SNDR Input waveform
PAM4 | ASA SG4, 5 | SNDR Level 0-3 | The SNDR Input waveform
PAM3 | USB4 Gen 4 | SNDR Level 0-2 | The SNDR Input waveform

## SCPI Command

`:MEASure:SNDRatio:LMEans`