National Instruments NI 447 Series User Manual page 42

Chapter 3 Device Overview and Theory of Operation
NI 447X User Manual
In below-low-level triggering mode, shown in Figure 3-8, the trigger is
generated when the signal value is less than lowValue. highValue is
unused.
lowValue
Trigger
Figure 3-8. Below-Low-Level Triggering Mode
In above-high-level triggering mode, shown in Figure 3-9, the trigger is
generated when the signal value is greater than highValue. lowValue is
unused.
highValue
Trigger
Figure 3-9. Above-High-Level Triggering Mode
In inside-region triggering mode, shown in Figure 3-10, the trigger is
generated when the signal value is between lowValue and highValue.
highValue
lowValue
Trigger
Figure 3-10. Inside-Region Triggering Mode
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