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Chapter 3
Hardware Overview
© National Instruments Corporation
3-17
In high-hysteresis analog triggering mode, the trigger is generated when the
signal value is greater than highValue, with the hysteresis specified by
lowValue.
signal value is greater than highValue, with the hysteresis specified by
lowValue.
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.
signal value is less than lowValue, with the hysteresis specified by
highValue.
Figure 3-13. Low-Hysteresis Analog Triggering Mode
The analog trigger circuit generates an internal digital trigger based on the
AI 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 AI, AO, and
general-purpose counter/timer sections. For example, the AI section can be
configured to acquire n scans after the AI signal crosses a specific
threshold. As another example, the AO section can be configured to update
its outputs whenever the AI signal crosses a specific threshold.
AI 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 AI, AO, and
general-purpose counter/timer sections. For example, the AI section can be
configured to acquire n scans after the AI signal crosses a specific
threshold. As another example, the AO section can be configured to update
its outputs whenever the AI signal crosses a specific threshold.
highValue
Trigger
lowValue
highValue
Trigger
lowValue