Analog Window Triggering - National Instruments NI 6221 User Manual

Chapter 11 Triggering
Hysteresis
Then signal must go below low threshold
before Analog Comparison Event asserts
Analog Comparison Event

Analog Window Triggering

Analog Comparison Event
M Series User Manual
First signal must go
above high threshold
Figure 11-6. Analog Edge Triggering with Hysteresis Falling Slope Example
An analog window trigger occurs when an analog signal either passes into
(enters) or passes out of (leaves) a window defined by two voltage levels.
Specify the levels by setting the window Top value and the window Bottom
value.
Figure 11-7 demonstrates a trigger that asserts when the signal enters the
window.
Top
Bottom
Figure 11-7. Analog Window Triggering Mode (Entering Window)
11-6
High threshold
(Level + Hysteresis)
Low threshold
(Level)
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