# :CALibrate:CHANnel:NOISe?

:CALibrate Channel Commands

- :CALibrate:CHANnel:ENABled
- :CALibrate:CHANnel:NOISe?
- :CALibrate:CHANnel:STATus?
- :CALibrate:CHANnel:STATus:DETails?
- :CALibrate:CHANnel:STATus:DTEMperature?
- :CALibrate:CHANnel:STATus:TIME?

## Query Syntax

    :CALibrate:CHANnelN:NOISe?

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`.

## Description

Returns the channel’s RMS noise for the current bandwidth, filter, and wavelength selection. The noise was measured during the most recent channel calibration.