# :TRIGger:EDGE:SOURce

:TRIGger Edge Commands

- :TRIGger:EDGE:COUPling
- :TRIGger:EDGE:SLOPe
- :TRIGger:EDGE:SOURce

## Command Syntax

    :TRIGger:EDGE:SOURce  <trigger_source>

Where <trigger_source> 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`.
- `AUX` — The Aux Trig In input.
- `CALibrator` — ???.

## Query Syntax

    :TRIGger:EDGE:SOURce?

## Description

In the Edge trigger mode (see `:TRIGger:MODE`), this command selects the Source. You can choose from one of the analog input channels, the Aux Trig In input, or the internal calibrator signal.