# :TRIGger:WINDow:SOURce

:TRIGger Window Commands

- :TRIGger:WINDow:MODE
- :TRIGger:WINDow:SOURce
- :TRIGger:WINDow:TIME

## Command Syntax

    :TRIGger:WINDow:SOURce  <trigger_source>

Where <trigger_source> can be:

- `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`.

## Query Syntax

    :TRIGger:WINDow:SOURce?

## Description

In the Window trigger mode (see `:TRIGger:MODE`), this command selects the Source. You can choose from one of the analog input channels.