National Instruments NI 6238, NI 6239 Chapter 5 Analog Output, Chapter 6 Digital Input and Output

Contents

AI Pause Trigger Signal..................................................................................4-24

Using a Digital Source......................................................................4-24

Routing AI Pause Trigger Signal to an Output Terminal.................4-25

Getting Started with AI Applications in Software.........................................................4-25

Chapter 5Analog Output

Analog Output Circuitry................................................................................................5-1

Analog Output Data Generation Methods.....................................................................5-2

Software-Timed Generations...........................................................................5-2

Hardware-Timed Generations.........................................................................5-2

Non-Buffered....................................................................................5-3

Buffered............................................................................................5-3

Analog Output Triggering.............................................................................................5-4

Connecting Analog Current Output Signals..................................................................5-4

Analog Output Timing Signals......................................................................................5-5

AO Start Trigger Signal...................................................................................5-5

Using a Digital Source......................................................................5-6

Routing AO Start Trigger Signal to an Output Terminal..................5-6

AO Pause Trigger Signal.................................................................................5-6

Using a Digital Source......................................................................5-7

Routing AO Pause Trigger Signal to an Output Terminal................5-8

AO Sample Clock Signal.................................................................................5-8

Using an Internal Source...................................................................5-8

Using an External Source..................................................................5-8

Routing AO Sample Clock Signal to an Output Terminal................5-8

Other Timing Requirements..............................................................5-9

AO Sample Clock Timebase Signal................................................................5-9

Getting Started with AO Applications in Software.......................................................5-10

Chapter 6Digital Input and Output

I/O Protection.................................................................................................................6-1

Programmable Power-Up States....................................................................................6-1

Connecting Digital I/O Signals......................................................................................6-2

Logic Conventions.........................................................................................................6-3

Getting Started with DIO Applications in Software......................................................6-4