Adept AdeptSight User Guide - Manual (Page 227)

Mode State is a checkbox that determines whether or not to use an external trigger. The default is off.
Trigger Source and Trigger Activation have no effect unless the trigger is enabled.
Trigger Source is for cameras that support multiple trigger lines. Specify which line will be used to cause an
image to be taken.
The Trigger Activation field specifies which part of the trigger signal to react to.
Trigger
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 227