# :DIFF:STATus?

:DIFF General Commands

- :DIFF:COLor
- :DIFF:COPY
- :DIFF:CWINdow
- :DIFF:DESKew
- :DIFF:DISPlay
- :DIFF:DMODe
- :DIFF:FCHan?
- :DIFF:PATTern:FILE:GCODe
- :DIFF:PATTern:FILE:NAME
- :DIFF:PATTern:FILE:RELoad
- :DIFF:PATTern:INVert
- :DIFF:PATTern:KPATtern
- :DIFF:PATTern:MODE
- :DIFF:SCHan?
- :DIFF:SIGNal:TYPE
- :DIFF:SNOise:CALibrate
- :DIFF:SNOise:SNValue:LEVel{0:3}?
- :DIFF:STATus?
- :DIFF:TDELay
- :DIFF:UNAMe

## Query Syntax

    :DIFFN:STATus?

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`.

## Query Response

    {AVA | UNAV}

## Description

Queries the availability of a differential channel for use. A differential channel becomes available (`AVA`) when the following is true:

- An associated multi-channel instrument is installed or instrument is configured, and
- The differential channel is selected in the Channel Setup dialog box (Use the `:DIFF:DMODe` command).

Available differential channels are shown in the Signals Palette. An available differential channel's waveform may or may not be displayed. A differential channel is unavailable (`UNAV`) if the differential channel is not selected in the Channel Setup dialog box.

Use the `:DIFF:DISPlay` command query to determine if a channel waveform is displayed.