# :FUNCtion:SNOise:SNValue:LEVel{0:3}?

:FUNCtion Define Commands

- :FUNCtion:COLor
- :FUNCtion:CONStant
- :FUNCtion:CWINdow
- :FUNCtion:DISPlay
- :FUNCtion:HORizontal:SCALing
- :FUNCtion:OPERand
- :FUNCtion:PATTern:FILE:GCODe
- :FUNCtion:PATTern:FILE:NAME
- :FUNCtion:PATTern:FILE:RELoad
- :FUNCtion:PATTern:INVert
- :FUNCtion:PATTern:KPATtern
- :FUNCtion:PATTern:MODE
- :FUNCtion:PATTern:TRACking
- :FUNCtion:SIGNal:TYPE
- :FUNCtion:SIGNal:TYPE:TRACking
- :FUNCtion:SNOise:CALibrate
- :FUNCtion:SNOise:SNValue:LEVel{0:3}?
- :FUNCtion:UNAMe

## Query Syntax

    :FUNCtionN:SNOise:SNValue:LEVel{0:3}?

Where N identifies one of sixty four {1:64} math functions that you can create. For example, `:FUNCtion2`.

## Description

This query returns the calibrated oscilloscope noise value at the specified level.

AN NRZ signal has LEVel0 and LEVel1. A PAM3 signal has LEVEL0, LEVel1, and LEVel2. A PAM4 signal has LEVEL0, LEVel1, LEVel2, and LEVel3.

Use the `:FUNCtion:SNOise:CALibrate` command to start the oscilloscope noise calibration.