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M Series User Manual

Connecting Ground-Referenced Signal Sources .............................................................. 4-17

What Are Ground-Referenced Signal Sources? ....................................................... 4-17

When to Use Differential Connections with Ground-Referenced Signal

Sources .................................................................................................................. 4-18

When to Use Non-Referenced Single-Ended (NRSE) Connections with

Ground-Referenced Signal Sources ...................................................................... 4-18

When to Use Referenced Single-Ended (RSE) Connections with

Ground-Referenced Signal Sources ...................................................................... 4-19

Using Differential Connections for Ground-Referenced Signal Sources................. 4-19

Using Non-Referenced Single-Ended (NRSE) Connections for

Ground-Referenced Signal Sources ...................................................................... 4-20

Field Wiring Considerations............................................................................................. 4-21

Analog Input Timing Signals ........................................................................................... 4-21

AI Sample Clock Signal ........................................................................................... 4-23

Using an Internal Source .................................................................................. 4-24

Using an External Source ................................................................................. 4-24

Routing AI Sample Clock Signal to an Output Terminal................................. 4-24

Other Timing Requirements ............................................................................. 4-24

AI Sample Clock Timebase Signal........................................................................... 4-25

AI Convert Clock Signal .......................................................................................... 4-25

Using an Internal Source .................................................................................. 4-26

Using an External Source ................................................................................. 4-26

Routing AI Convert Clock Signal to an Output Terminal................................ 4-26

Using a Delay from Sample Clock to Convert Clock ...................................... 4-27

Other Timing Requirements ............................................................................. 4-27

AI Convert Clock Timebase Signal.......................................................................... 4-29

AI Hold Complete Event Signal............................................................................... 4-29

AI Start Trigger Signal ............................................................................................. 4-29

Using a Digital Source...................................................................................... 4-29

Using an Analog Source ................................................................................... 4-30

Routing AI Start Trigger to an Output Terminal .............................................. 4-30

AI Reference Trigger Signal..................................................................................... 4-30

Using a Digital Source...................................................................................... 4-31

Using an Analog Source ................................................................................... 4-31

Routing AI Reference Trigger Signal to an Output Terminal .......................... 4-31

AI Pause Trigger Signal ........................................................................................... 4-31

Using a Digital Source...................................................................................... 4-32

Using an Analog Source ................................................................................... 4-32

Routing AI Pause Trigger Signal to an Output Terminal................................. 4-32

Getting Started with AI Applications in Software............................................................ 4-32

National Instruments 622 Series User Manual

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