National Instruments cDAQ-9138 User Manual

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Contents

National Instruments cDAQ-9138 User Manual Manual pdf 7 page image

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