Chapter 2
NI 5450 Overview
©
National Instruments Corporation
2-73
NI PXIe-5450 User Manual
Triggers Summary
The following table describes the triggers supported by signal generators.
The
Supported Types
column denotes which trigger types are valid for a
given trigger.
Types of Triggers
A trigger is an external stimulus that initiates one or more device functions.
Trigger stimuli include digital edges, software functions, and analog levels.
You can trigger your NI signal generator with one of the following types of
triggers:
•
Edge
•
Level
•
Software
Note
Individual triggers may not support all the trigger types listed here.
Trigger Name
Supported Types
Description
Start
Digital Edge, Software
The Start trigger transitions a device from an idle state
to a generation state where the device can respond to
Sample clocks.
Script
Digital Edge, Digital
Level, Software
The Script trigger is a general-purpose trigger with a
role that is entirely determined by the context of the
generation script. A script allows you to create
sophisticated generation operations. For example, the
script could configure the device to generate
waveform A, then wait for the Script trigger, then
generate waveform B. You can create multiple Script
triggers for use in your application. Once a digital
edge Script trigger has been received, that trigger
remains true for all subsequent instructions until the
clear instruction is called or the trigger is reset after
being used in the wait, repeat/end repeat, or if
instructions.
