National Instruments 6368 User Manual

11-2 | ni.com
Chapter 11 Triggering
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 device specifications.
Figure 11-2 shows the analog trigger circuit on MIO X Series devices.
Figure 11-2. MIO X Series Device Analog Trigger Circuit
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 1 kΩ 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 can also be used for other functions such as the
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
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

National Instruments 6368 Specifications

General

Brand	National Instruments
Model	6368
Category	Data Loggers
Language	English