National Instruments DAQ X Series User Manual

Chapter 11 Triggering
© National Instruments 11-3 X Series User Manual
Figure 11-3 shows the analog trigger circuit on Simultaneous MIO
X Series devices.
Figure 11-3. Simultaneous MIO X Series Device Analog Trigger Circuitry
You must specify a source and an analog trigger type. The source can be
either an APFI <0,1> terminal or an analog input channel.
APFI <0,1> Terminals
When you use either APFI <0,1> terminal as an analog trigger, you
should drive the terminal with a low impedance signal source (less than
1kΩ source impedance). If APFI <0,1> are left unconnected, they are
susceptible to crosstalk from adjacent terminals, which can cause false
triggering. Note that the APFI <0,1> terminals also can be used for other
functions such as the AO External Reference input, as described in the
AO Reference Selection section of Chapter 5, Analog Output.
Analog Input Channels
Refer to the Analog Input Channels on MIO X Series Devices or Analog
Input Channels on Simultaneous MIO X Series Devices section, depending
on your device.
Analog
Input
Channels
NI-PGIA
+
–
+
–
ADC
ADC
Mux
Analog
Trigger
Detection
Analog Comparison
Event
(Analog Trigger
Circuitry Output)
APFI <0..1>
AO Circuitry
Counter Circuitry
DIO Circuitry
AI Circuitry
NI-PGIA
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National Instruments DAQ X Series Specifications

General

Brand	National Instruments
Model	DAQ X Series
Category	I/O Systems
Language	English