National Instruments NI 7831R User Manual

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National Instruments NI 7831R User Manual Manual pdf 5 page image

© National Instruments Corporation v NI 7831R User ManualContentsAbout This ManualConventions ...................................................................................................................viiReconfigurable I/O Documentation...............................................................................viiiRelated Documentation..................................................................................................ixChapter 1IntroductionAbout the NI 7831R.......................................................................................................1-1Using PXI with CompactPCI.........................................................................................1-2Overview of Reconfigurable I/O ...................................................................................1-3Reconfigurable I/O Concept............................................................................1-3Flexible Functionality .......................................................................1-3User-Defined I/O Resources .............................................................1-4Device-Embedded Logic and Processing .........................................1-4Reconfigurable I/O Architecture .....................................................................1-4Reconfigurable I/O Applications.....................................................................1-5Software Development ..................................................................................................1-5LabVIEW FPGA Module................................................................................1-5LabVIEW Real-Time Module.........................................................................1-6Cables and Optional Equipment ....................................................................................1-7Custom Cabling .............................................................................................................1-8Safety Information .........................................................................................................1-9Chapter 2Hardware Overview of the NI 7831RAnalog Input ..................................................................................................................2-3Input Modes.....................................................................................................2-4Input Range .....................................................................................................2-4Connecting Analog Input Signals ..................................................................................2-5Types of Signal Sources ................................................................................................2-7Floating Signal Sources...................................................................................2-7Ground-Referenced Signal Sources ................................................................2-7Input Modes ...................................................................................................................2-7Differential Connection Considerations (DIFF Input Mode)..........................2-9Differential Connections for Ground-Referenced Signal Sources....2-9Differential Connections for Nonreferencedor Floating Signal Sources .............................................................2-10