Trigger Input

Applies to:

For applications using a hardware acquisition trigger, anyone of the system I/O input ports can be selected as the source for the trigger control circuit of the acquisition channel.

For that usage, use the parameters belonging to the Channel Trigger Control Category .

The trigger source signal can originate from the following type of devices:

●

Through a single high-speed differential input port driven by an RS-422 compatible detector.

●

Through a single isolated current-sense input port driven by a detector that is not RS-422 compliant.

The selection of the port is primarily based on the electrical style of the sensor device used as trigger source.

Possible ports assignments

Sourcing device type	Default port(s) assignment	Alternate port assignment(s)
RS-422 compatible detector	High-speed diff. input #2	High-speed diff. input #1
Other detectors	Isolated input #2	Isolated input #1 Isolated input #3 Isolated input #4

The default port assignment for both electrical styles is different than the one of the line trigger (at least when a single signal is used).

See also: Hardware Trigger