MTS Series 793 Application - Manual (Page 91)

About “Trigger” Signals
MTS MultiPurpose TestWare® Working with MPT Processes 91
Trigger signal example The following sample procedure makes use of a trigger signal.
In this example:
• The Peak/Valley Change Detector process (labeled Detect P/V) is set to
trigger continuously. (It generates a trigger signal whenever it detects a peak
or a valley outside the specified tolerance band.)
• The Detect P/V.Trigger is used to start the peak/valley acquisition process
(labeled Kathy’s DAQ), which acquires a specified amount of peak/valley
data and then stops.
With this configuration, this procedure acquires batches of peak/valley data as it
detects specified changes in the feedback’s peaks and valleys. Data is acquired
only when the Detect P/V process issues a trigger signal, rather than in a
continuous stream.
Since its job is to continually monitor feedback, the Detect P/V process never
generates a done signal. Because of this, you typically do not use the Detect P/
V.Done signal to start or interrupt any other process.
We use the Kathy’s Fatigue.Done signal to interrupt the Detect P/V process (and
generate a Detect P/V.Done signal). This prevents the test item from running
indefinitely.