National Instruments Eight-slot USB Chassis NI cDAQ-9172 - Manual (Page 2)

NI cDAQ-9172 User Guide and Specifications 2 ni.com
Analog Input ............................................................................................20
Analog Input Triggering...................................................................20
AI Start Trigger Signal ..............................................................21
AI Reference Trigger Signal .....................................................22
AI Pause Trigger Signal ............................................................24
Analog Input Timing Signals ...........................................................24
AI Sample Clock .......................................................................24
AI Sample Clock Timebase.......................................................25
Convert Behavior For Analog Input Modules...........................25
Getting Started with AI Applications in Software ...........................28
Analog Output .........................................................................................28
Analog Output Data Generation Methods ........................................28
Software-Timed Generations ....................................................29
Hardware-Timed Generations ...................................................29
Analog Output Triggering ................................................................30
Analog Output Timing Signals.........................................................31
AO Sample Clock......................................................................31
AO Start Trigger Signal ............................................................31
AO Pause Trigger Signal...........................................................33
Minimizing Glitches on the Output Signal.......................................34
Getting Started with AO Applications in Software..........................34
Digital I/O................................................................................................35
Correlated vs. Static DIO Modules ..................................................35
Static DIO.........................................................................................36
Digital Waveform Acquisition (Correlated Input) ...........................36
DI Sample Clock Signal............................................................36
Digital Waveform Generation (Correlated Output) .........................37
Buffered Digital Waveform Generation....................................38
Change Detection Event ...................................................................39
Routing Change Detection Event to an Output Terminal .........39
Change Detection Acquisition..........................................................39
Digital Input/Output Configuration for NI 9401 ..............................39
PFI ...........................................................................................................40
Counters...................................................................................................40
Counter Input Applications ..............................................................42
Counting Edges .........................................................................42
Pulse-Width Measurement ........................................................44
Period Measurement..................................................................46
Semi-Period Measurement ........................................................48
Frequency Measurement ...........................................................49
Position Measurement ...............................................................54
Two-Signal Edge-Separation Measurement..............................57
Counter Output Applications............................................................59
Simple Pulse Generation ...........................................................59
Pulse Train Generation..............................................................61
Frequency Generation ...............................................................62
Frequency Division ...................................................................63