The digital input is used with a custom sensor (Stick PPM,RPM,Pulse,etc) or a payload connection. It is possible to configure some of them in the XPC CAP menu.

XPC CAP Menu

Once the user has selected a sensor, it is possible to configure how Veronte uses that information and select the pin where it is connected, see 6.4.5 section for more details.

Some sensors have their own configuration menu, visit them for more information: Stick PPM or RPM sensor.