National Instruments NI cDAQ-9181, User Manual

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Contents
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Chapter 2
Analog Input
Analog Input Triggering Signals ......................................................................................2-1
Analog Input Timing Signals............................................................................................2-2
AI Sample Clock Signal ...........................................................................................2-2
Routing the Sample Clock to an Output Terminal ...........................................2-2
AI Sample Clock Timebase Signal...........................................................................2-2
AI Convert Clock Signal Behavior For Analog Input Modules ...............................2-3
Scanned Modules..............................................................................................2-3
Simultaneous Sample-and-Hold Modules ........................................................2-3
Sigma-Delta Modules .......................................................................................2-3
Slow Sample Rate Modules..............................................................................2-4
AI Start Trigger Signal .............................................................................................2-5
Using a Digital Source......................................................................................2-5
Using an Analog Source ...................................................................................2-5
Routing AI Start Trigger to an Output Terminal ..............................................2-5
AI Reference Trigger Signal.....................................................................................2-5
Using a Digital Source......................................................................................2-6
Using an Analog Source ...................................................................................2-6
Routing the Reference Trigger Signal to an Output Terminal..........................2-6
AI Pause Trigger Signal............................................................................................2-7
Using a Digital Source......................................................................................2-7
Using an Analog Source ...................................................................................2-7
Getting Started with AI Applications in Software............................................................2-7
Chapter 3
Analog Output
Analog Output Data Generation Methods ........................................................................3-1
Software-Timed Generations....................................................................................3-1
Hardware-Timed Generations...................................................................................3-2
Buffered Analog Output ...................................................................................3-2
Analog Output Triggering Signals....................................................................................3-3
Analog Output Timing Signals .........................................................................................3-3
AO Sample Clock Signal..........................................................................................3-3
Routing AO Sample Clock to an Output Terminal...........................................3-4
AO Sample Clock Timebase Signal .........................................................................3-4
AO Start Trigger Signal............................................................................................3-4
Using a Digital Source......................................................................................3-4
Using an Analog Source ...................................................................................3-4
Routing AO Start Trigger Signal to an Output Terminal .................................3-4
AO Pause Trigger Signal ..........................................................................................3-5
Using a Digital Source......................................................................................3-5
Using an Analog Source ...................................................................................3-6