Chapter 11 Triggering
X Series User Manual 11-2 ni.com
You also can program your DAQ device to perform an action in response to
a trigger from a digital source. The action can affect the following:
• Analog input acquisition
• Analog output generation
•Counter behavior
• Digital waveform acquisition and generation
Triggering with an Analog Source
Some X Series devices can generate a trigger on an analog signal. To find
your device triggering options, refer to the specifications document for
your device.
Figure 11-2 shows the analog trigger circuit on MIO X Series devices.
Figure 11-2. MIO X Series Device Analog Trigger Circuit
Analog
Input
Channels
PGIA
–
+
ADC
Mux
Analog
Trigger
Detection
Analog Comparison
Event
(Analog Trigger
Circuitry Output)
APFI <0..1>
AI Circuitry
AO Circuitry
Counter Circuitry
DIO Circuitry
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