MTS Series 793 Application - Manual (Page 364)

MTS MultiPurpose TestWare®
Peak/Valley Change Detector Process
Event Process Descriptions 364
Peak/Valley Change Detector Process
About the Peak/Valley Change Detector Process
The Peak/Valley Change Detector process monitors signals for peak and valley
changes.
In its default state, this process begins by detecting the amplitudes of the first
peak and valley, which it uses as reference levels to establish the tolerance band.
• If the process is set to trigger once, when the process detects a peak or valley
outside of the tolerance band, the process generates a trigger signal (its
“done” signal) and ends.
• If the process is set to trigger continuously, when the process detects a peak
or valley outside of the tolerance band, the process generates a trigger
signal, and then automatically establishes new reference levels for the
tolerance band. The process will keep triggering and establishing new
reference levels until the process is interrupted.
The trigger and done signals from the Peak/Valley Change Detector process are
used to trigger other processes.
If desired, you can override automatic detection of reference levels and use the
reference levels you specify. If you specify reference levels, the process will use
them for the duration of the test.
Peak
Valley
The detector triggers
when a peak or valley
occurs outside tolerance.
This process automatically
establishes peak and valley
reference levels (indicated by the
dots). The reference levels become
the basis for the tolerance range
(shown in grey).
If a peak or valley occurs outside of
the tolerance band, the process
generates a trigger signal and ends
or establishes new reference
levels.
If desired, you can type your own
reference values to be used
throughout the test.