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X Series User Manual

Using an Analog Source ................................................................................... 6-8

Routing DI Start Trigger to an Output Terminal .............................................. 6-8

DI Reference Trigger Signal..................................................................................... 6-8

Using a Digital Source...................................................................................... 6-9

Using an Analog Source ................................................................................... 6-9

Routing DI Reference Trigger Signal to an Output Terminal .......................... 6-9

DI Pause Trigger Signal ........................................................................................... 6-10

Using a Digital Source...................................................................................... 6-10

Using an Analog Source ................................................................................... 6-10

Routing DI Pause Trigger Signal to an Output Terminal................................. 6-11

Digital Output Data Generation Methods......................................................................... 6-11

Software-Timed Generations.................................................................................... 6-11

Hardware-Timed Generations .................................................................................. 6-11

Digital Output Triggering................................................................................................. 6-12

Digital Waveform Generation .......................................................................................... 6-13

DO Sample Clock Signal.......................................................................................... 6-13

Using an Internal Source .................................................................................. 6-13

Using an External Source ................................................................................. 6-14

Routing DO Sample Clock to an Output Terminal .......................................... 6-14

Other Timing Requirements ............................................................................. 6-14

DO Sample Clock Timebase Signal ......................................................................... 6-15

DO Start Trigger Signal............................................................................................ 6-15

Retriggerable DO.............................................................................................. 6-15

Using a Digital Source...................................................................................... 6-16

Using an Analog Source ................................................................................... 6-16

Routing DO Start Trigger Signal to an Output Terminal ................................. 6-16

DO Pause Trigger Signal.......................................................................................... 6-16

Using a Digital Source...................................................................................... 6-17

Using an Analog Source ................................................................................... 6-18

Routing DO Pause Trigger Signal to an Output Terminal ............................... 6-18

I/O Protection ................................................................................................................... 6-18

Programmable Power-Up States....................................................................................... 6-18

DI Change Detection ........................................................................................................ 6-19

DI Change Detection Applications........................................................................... 6-20

Digital Filtering ................................................................................................................ 6-20

Watchdog Timer ....................................................................................................... 6-23

Connecting Digital I/O Signals......................................................................................... 6-24

Getting Started with DIO Applications in Software......................................................... 6-25

National Instruments 6368 User Manual

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