Figure 3-12. High-Hysteresis Analog Triggering Mode; Figure 3-13. Low-Hysteresis Analog Triggering Mode - National Instruments AT-MIO/AI E Series User Manual

Chapter 3 Hardware Overview
AT-MIO/AI E Series User Manual
In high-hysteresis analog triggering mode, the trigger is generated
when the signal value is greater than highValue, with the
hysteresis specified by lowValue.
highValue
lowValue
Trigger

Figure 3-12. High-Hysteresis Analog Triggering Mode

In low-hysteresis analog triggering mode, the trigger is generated
when the signal value is less than lowValue, with the hysteresis
specified by highValue.
highValue
lowValue
Trigger

Figure 3-13. Low-Hysteresis Analog Triggering Mode

The analog trigger circuit generates an internal digital trigger based
on the analog input signal and the user-defined trigger levels. This
digital trigger can be used by any of the timing sections of the
DAQ-STC, including the analog input, analog output, and
general-purpose counter/timer sections. For example, the analog
input section can be configured to acquire n scans after the analog
input signal crosses a specific threshold. As another example, the
analog output section can be configured to update its outputs
whenever the analog input signal crosses a specific threshold.
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