National Instruments Computer-Based Instruments Digital Oscilloscope for PCI NI 5911 Manual de usuario Pagina 23

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Chapter 2 Hardware Overview
© National Instruments Corporation 2-11 NI 5911 User Manual
Figure 2-6.
High-Hysteresis Analog Triggering Mode
In high-hysteresis analog triggering mode, the trigger is generated when a
signal crosses above the hysteresis value and then crosses above the trigger
value. The signal must cross back below the hysteresis value before another
trigger is generated.
Figure 2-7. Low-Hysteresis Analog Triggering Mode
In low-hysteresis analog triggering mode, the trigger is generated when the
signal crosses below the hysteresis value and then crosses the trigger value.
The signal must cross back above the hysteresis value before another
trigger is generated.
Trigger
Value
Trigger
Hysteresis
Value
Falling Edge Trigger
Rising Edge Trigger
Hysteresis
Value
Trigger
Trigger
Value
Falling Edge Trigger
Rising Edge Trigger
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