# :MEASure:SNDRatio:SNPLevel:SOURce

SNDR Sigma-n Per Level Commands

- :MEASure:SNDRatio:SNPLevel
- :MEASure:SNDRatio:SNPLevel:FAVorite
- :MEASure:SNDRatio:SNPLevel:LEVel
- :MEASure:SNDRatio:SNPLevel:LOCation?
- :MEASure:SNDRatio:SNPLevel:SOURce
- :MEASure:SNDRatio:SNPLevel:STATus?
- :MEASure:SNDRatio:SNPLevel:STATus:DETails?
- :MEASure:SNDRatio:SNPLevel:STATus:REASon?
- :MEASure:SNDRatio:SNPLevel:UREFerence:STATe
- :MEASure:SNDRatio:SNPLevel:UREFerence:VALue

## Command Syntax

    :MEASure:SNDRatio:SNPLevel:SOURce <source_waveform>

Where <source_waveform> can be one of the following:

- `CHANnel{N}` — Where N identifies a specific channel in the form "<connection1-8>_<ch1-8>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1-8>". For example, connection 4 channel 2 is `CHANnel4_2`.
- `DIFF{N}` — Where N identifies a specific differential waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 differential waveform 3 (from the pairing of channels 3 and 4) is `DIFF5_3`.
- `CMODe{N}` — Where N identifies a specific common-mode waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 common-mode waveform 3 (from the pairing of channels 3 and 4) is `CMODe5_3`.
- `FUNCtion{1:64}`
- `WMEMory{1:8}`
- `CGMemory{1:8}`

## Query Syntax

    :MEASure:SNDRatio:SNPLevel:SOURce?

## Description

Selects the source waveform on which to perform the `:MEASure:SNDRatio:SNPLevel` measurement. The source must be a displayed single-valued waveform.